Skocz do pozycji: 1.

Tytuł:

Determination of Pleurotus abieticola ligninolytic activity on norway spruce wood

Autorzy:

Żółciak, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2041965.pdf

Data publikacji:

2019

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

laccase
lignin peroxidase
manganese peroxidase
versatile peroxidase
spruce
white rot fungus
wood

Opis:

The effect of Phlebiopsis gigantea treatment in control of Heterobasidion parviporum in Norway spruce is less effective than that in control of Heterobasidion annosum in pine. It is necessary to apply other fungi, for example, Pleurotus abieticola in Norway spruce stands. Thus, it is necessary to assess the activity of major ligninolytic enzymes, that is, laccase, lignin peroxidase (LiP), manganese peroxidase (MnP) and versatile peroxidase (VP) produced by P. abieticola, which may be effective in the fast degradation of Norway spruce wood. Three strains of P. abieticola (Pa1-3) were grown on pieces of Norway spruce sapwood and heartwood for 50 days in laboratory conditions. Enzymatic activity was determined using spectrophotometry. Pleurotus abieticola produced laccase, LiP, MnP and VP. The activity of laccase was low, ranging 0–3.696 and 0–0.806 mU/μg of protein in sapwood and heartwood, respectively. The highest activity in Pa1 = 3.696 mU/μg of protein in sapwood and in Pa3 = 0.806 mU/μg of protein in heartwood was observed after 30 and 50 days of incubation, respectively. The activity of LiP was also low, ranging 0–0.188 and 0–0.271 mU/μg of protein in sapwood and heartwood, respectively. The highest activity in Pa1 = 0.271 mU/μg of protein in sapwood and in Pa2 = 0.188 mU/μg of protein in heartwood was observed after 40 and 20 days of incubation, respectively. The activity of MnP ranged 0–17.618 and 0–12.203 mU/μg of protein in sapwood and heartwood, respectively. This enzymatic activity peaked at the 50th day of culture on sapwood for the Pa3 strain (17.618 mU/μg of protein) and at the 20th day of culture on heartwood for the Pa1 strain (12.203 mU/μg of protein). The activity of VP with manganese-oxidising properties was found to be high in all strains of P. abieticola, ranging 0–39.19 and 0–59.153 mU/μg of protein in sapwood and heartwood, respectively, whereas the activity of VP with guaiacol-oxidising properties was very low for all P. abieticola strains, ranging 0–0.248 and 0–0.225 mU/μg of protein in sapwood and heartwood, respectively. The values of released hydroxyphenols in P. abieticola strains ranged 24.915–139.766 and 25.19–84.562 µg of protocatechuic acid/ml in sapwood and heartwood, respectively. The values of released methoxyphenols for the evaluated strains of P. abieticola ranged 7.225–23.789 and 1.953–20.651 µg of vanillic acid/ml in sapwood and heartwood, respectively. Further studies with a higher number of strains of this species as well as an optimisation of conditions for the measurement of ligninolytic activity are needed.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 4; 267-277
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Cadmium-induced changes in antioxidant enzymes in suspension culture of soybean cells.

Autorzy:

Sobkowiak, Robert
Rymer, Katarzyna
Rucińska, Renata
Deckert, Joanna

Powiązania:

https://bibliotekanauki.pl/articles/1043349.pdf

Data publikacji:

2004

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

ascorbate peroxidase
superoxide dismutase
peroxidase
soybean cell suspension culture
catalase
cadmium

Opis:

Cadmium (Cd), similarly to other heavy metals, inhibits plant growth. We have recently showed that Cd2+ either stimulates (1-4 μM) or inhibits (ł 6 μM) growth of soybean (Glycine max L.) cells in suspension culture (Sobkowiak & Deckert, 2003, Plant Physiol Biochem. 41: 767-72). Here, soybean cell suspension cultures were treated with various concentrations of Cd2+ (1-10 μM) and the following enzymes were analyzed by native electrophoresis: superoxide dismutase (SOD), catalase (CAT), peroxidase (POX) and ascorbate peroxidase (APOX). We found a significant correlation between the cadmium-induced changes of soybean cell culture growth and the isoenzyme pattern of the antioxidant enzymes. The results suggest that inhibition of growth and modification of antioxidant defense reactions appear in soybean cells when Cd2+ concentration in culture medium increases only slightly, from 4 to 6 μM.

Źródło:

Acta Biochimica Polonica; 2004, 51, 1; 219-222
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Differential response of antioxidant enzymes to cadmium stress in tolerant and sensitive cell line of cucumber (Cucumis sativus L.)

Autorzy:

Gzyl, Jarosław
Rymer, Katarzyna
Gwóźdź, Edward

Powiązania:

https://bibliotekanauki.pl/articles/1040497.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

cell suspension
cadmium
tolerance
superoxide dismutase
catalase
ascorbate peroxidase
guaiacol peroxidase

Opis:

Previously, a stable cell suspension of cucumber tolerant to 100 µM CdCl2 was obtained (Gzyl & Gwóźdź, 2005, Plant Cell Tissue Organ Cult 80: 59-67). In this study, the relationship between the activity of antioxidant enzymes and cadmium tolerance of cucumber cells was analyzed. A cadmium-sensitive and the cadmium-tolerant cell lines were exposed to 100 µM and 200 µM CdCl2 and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APOX) and guaiacol peroxidase (POX) were determined. In the sensitive cell line, a decrease of total activity of SOD and POX was observed, whereas the activity of CAT and APOX significantly increased in metal-supplemented medium. By contrast, in the tolerant cells, the total activity of antioxidant enzymes decreased (SOD, CAT) or was maintained at approximately the same level (APOX, POX). Moreover, a different pattern of isoenzyme activity was observed in the tolerant and sensitive cells. These results suggest that an enhanced activity of antioxidant enzymes is not directly involved in the increased tolerance to cadmium of the selected cucumber cell line.

Źródło:

Acta Biochimica Polonica; 2009, 56, 4; 723-727
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Controllable preparation of highly active horseradish peroxidase-gold nanoparticle bionanoconjugate

Autorzy:

Zhang, P.
Liu, Ch.
Song, S.
Peng, Ch.

Powiązania:

https://bibliotekanauki.pl/articles/778931.pdf

Data publikacji:

2012

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

horseradish peroxidase
gold nanoparticles
bionanoconjugate

Opis:

A novel method of immobilizing horse radish peroxidase enzyme (HRP) onto the surface of gold nanoparticles (GNPs) was developed. As a result, a high-activity bionanoconjugates was obtained through utilizing the biotin-streptavidin (SA) system. The HRP-SA-GNP bionanoconjugate with high activity was conveniently prepared through the biotin- avidin system. Compared with the HRP-GNP bioconjugate prepared through the traditional electrostatic absorption method, the enzyme activity per GNPs of this new bionanoconjugate was enhanced by 10 times. Moreover, the enzyme activity of this bionanoconjugate was controllable. The above method of bionanoconjugation preparation has promising applications In the fi elds including preparing highly active bio-nanoprobe and immobilized enzyme.

Źródło:

Polish Journal of Chemical Technology; 2012, 14, 4; 57-60
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Enzymatic assay of opioid analgesic, tramadol, using horseradish peroxidase

Autorzy:

Sridevi, N.
Srilakshmi, C.
Alekya, G.
Bala Sekaran, C.

Powiązania:

https://bibliotekanauki.pl/articles/10767.pdf

Data publikacji:

2014

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

opioid
tramadol
horseradish peroxidase
enzymatic method

Opis:

Three novel and sensitive enzymatic methods have been developed for the quantification of tramadol in pharmaceutical dosage forms. The proposed methods are based on the reaction of tramadol with 3-methylbenzothiazoline-2-one hydrazone (method A), aniline (method B) and aminoantipyrine in the presence of hydrogen peroxide and horseradish peroxidase to give colored complexes. The colored complexes obtained with 3-methylbenzothiazoline-2-one hydrazone, aniline and aminoantipyrine exhibit absorption maxima at 480 nm, 550 nm and 530 nm, respectively. Regression analysis of Beer’s plots showed good correlation for tramadol in the concentration range (μg/mL) 2-12 for the methods A & B and 4-24 for the method C. The experimental parameters were studied and optimized. The precision and accuracy of the methods were satisfactory. The proposed methods were successfully applied for the quantification of tramadol in 3 brands of commercially available tablet dosage forms. The results were compared satisfactorily with the official method.

Źródło:

International Letters of Natural Sciences; 2014, 11, 1
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Peroxidase and IAA oxidase activities during sink development in cotton seed.

Autorzy:

Rabadia, Vraj
Thaker, Vrinda
Singh, YeshDev

Powiązania:

https://bibliotekanauki.pl/articles/2199024.pdf

Data publikacji:

2006-06-22

Wydawca:

Instytut Hodowli i Aklimatyzacji Roślin

Tematy:

cotton
IAA oxidase
peroxidase
seed development

Opis:

Seeds of the three cotton genotypes, H-6 and H-4 (Gossypium hirsutum),and V797 (G. herbaceum) for their growth variations in IAA oxidase and peroxidase activities. The three genotypes varied in their final seed weight. The peroxidase analysis was done with four different hydrogen donors. Though the trends in peroxidase activitywere almost similar in the three genotypes, there was variation with different hydrogen donors. These was an inverse correlation between Cytoplasmic peroxidase and Wall bound peroxidase activity and rate of water uptake of the seed. The peroxidase activity showed up increasing levels only after the rate of water uptake decreased. However, IAA oxidase activity did not show any discernible trend with water content. The role of cytoplasmic and wall bound peroxidase in seed development is discussed in detail    

Źródło:

Plant Breeding and Seed Science; 2006, 53; 27-36
1429-3862
2083-599X

Pojawia się w:

Plant Breeding and Seed Science

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Effect of nanosilver on physiological performance of pelargonium plants exposed to dark storage

Autorzy:

Hatami, M.
Ghorbanpour, M.

Powiązania:

https://bibliotekanauki.pl/articles/1826.pdf

Data publikacji:

2013

Wydawca:

Instytut Ogrodnictwa

Tematy:

Pelargonium
Pelargonium x hortorum
nanosilver
leaf senescence
storage
antioxidative enzyme
lipid peroxidation
ascorbate peroxidase
guaiacol peroxidase

Źródło:

Journal of Horticultural Research; 2013, 21, 1
2300-5009

Pojawia się w:

Journal of Horticultural Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 8.

Tytuł:

Kinetic studies on the oxidation of nitrite by horseradish peroxidase and lactoperoxidase

Autorzy:

Gębicka, Lidia

Powiązania:

https://bibliotekanauki.pl/articles/1044450.pdf

Data publikacji:

1999

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

lactoperoxidase
nitrite
stopped-flow
horseradish peroxidase

Opis:

The reaction of nitrite (NO-_2) with horseradish peroxidase and lactoperoxidase was studied. Sequential mixing sopped-flow measeruments gave the following values for the rate constants of the reaction of nitrite with compounds II (oxoferryl heme intermediates) of horseradish peroxidase and lactoperoxidase at pH 7.0, 13.3 ± 0.07 mol^{-1}dm^3s^{-1} and 3.5 ± 0.05 · 10^4mol^{-1}dm^3s^{-1}, respectively. Nitrite, at neutral pH, influenced measurements of activity of lactoperoxidase with typical substrates like 2,2'-azino-bis[ethyl-benzothiazoline-(6)-sulphonic acid] (ABTS), guaiacol or thiocyanate (SCN-). The rate of ABTS and guaiacol oxidation increased linearly with nitrite concentration up to 2.5-5 mmol dm^{-3}. On the other hand, two-electron SCN- oxidation was inhibited in the presence od nitrite. Thus, nitrite competed with the investigated substrates of lactoperoxidase. The intermediate, most probably nitrogen dioxide (*NO_2), reacted more rapidly with ABTS or guaiacol than did lactoperoxidase compound II. It did not, however, effectively oxidize SCN- to OSCN-. NO-_2 did not influence the activity measurements of horseradish peroxidase by ABTS or guaiacol method.

Źródło:

Acta Biochimica Polonica; 1999, 46, 4; 919-927
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

The properties of peroxisomal ascorbate peroxidase from sugar beet (Beta vulgaris ) and expressed in E. coli

Autorzy:

Kurnik, K.
Skorupa-Klaput, M.
Tyburski, J.

Powiązania:

https://bibliotekanauki.pl/articles/80526.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
ascorbate peroxidase
sugar-beet
Beta vulgaris
Escherichia coli
expression
peroxidase activity
protein extract
BL21 cell

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 10.

Tytuł:

Bundle sheath-specific expression of the ascorbate peroxidase 2 affects photosynthesis in whole plant

Autorzy:

Gorecka, M.
Alvarez Fernandez, R.
Bialasek, M.
Mulleineaux, P.
Karpinski, S.

Powiązania:

https://bibliotekanauki.pl/articles/951327.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
sheath-specific expression
ascorbate peroxidase
hydrogen peroxide
photosynthesis
cytosolic peroxidase
fluorescence
electron transport chain
gene encoding

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 11.

Tytuł:

Intraspecific differentiation of reed grass Calamagrostis arundinacea [L.] Roth [Poaceae] populations revealed by peroxidase allozymes

Autorzy:

Krzakowa, M
Celka, Z.

Powiązania:

https://bibliotekanauki.pl/articles/58313.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

intraspecific differentiation
reed grass
Calamagrostis arundinacea
Poaceae
plant population
peroxidase allozyme
natural population
Polska
peroxidase
geographic region

Opis:

The genetic Variation of Reed Grass Calamagrostis arundinacea (L.) Roth was investigated in 25 populations in various geographic regions of Poland. A total of 907 individuals were sampled for electrophoretic analysis of peroxidase loci (11 allozymes). Populations were characterised by genetic parameters e.g. heterozygosity level, Wright's fixation index (F) and polymorphism coefficient (Pg). Mean values of interpopulation variability level (GST=0.0310), total genetic diversity (HT=0.4102) and gene flow between populations (Nm=7.805) were also examined. All the populations were polymorphic and they remain in Hardy Weinberg equilibrium.

Źródło:

Acta Societatis Botanicorum Poloniae; 2008, 77, 4; 299-304
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 12.

Tytuł:

Influence of selenium on oxidative stress in athletes. Review article

Autorzy:

Sieja, Krzysztof
von Mach-Szczypińska, Joanna
Kois, Natalia
Ler, Paulina
Piechanowska, Klaudia
Stolarska, Michalina

Powiązania:

https://bibliotekanauki.pl/articles/1055002.pdf

Data publikacji:

2016

Wydawca:

Uniwersytet Szczeciński. Wydawnictwo Naukowe Uniwersytetu Szczecińskiego

Tematy:

athletes
gluthatione peroxidase
malondialdehyde
physical exercise
selenium

Opis:

The aim of the study was to analyze the influence of selenium (Se) on the course of oxidative stress in trained athletes, on the basis of own former published studies and the reference of literature. In a number of references it was shown that the application of Se led to the diminishing of oxidative stress during the physical exercises in athletes. The application of Se to athletes − led to the increase of peroxidase glutathione the main selen − dependent enzyme. The fact of increased concentration of malondialdehyde (MDA) in blood serum, the main metabolite of lipid peroxidation can indirectly evidence about the intensity of physical endurance. This increase is significantly smaller in individuals taking exogenous antioxidative diet supplement containing Se. Moreover there is the evidence that oxidative muscles damage during physical effort could be diminished by compounds with antioxidative properties. Taking into consideration, the obtained results by many of authors empower to the conclusion that application of Se diminishes the degree of peroxidation of lipids in trained athletes.

Źródło:

Central European Journal of Sport Sciences and Medicine; 2016, 14, 2; 87 - 92
2300-9705
2353-2807

Pojawia się w:

Central European Journal of Sport Sciences and Medicine

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

Tytuł:

Grain discoloration in different genotypes of durum wheat (Triticum durum L.) in Argentina: associated mycobiota and peroxidase activity

Autorzy:

Cipollone, M.J.
Moya, P.
Martinez, I.
Saparrat, M.
Sisterna, M.

Powiązania:

https://bibliotekanauki.pl/articles/2084746.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

durum wheat
grain discoloration
mycobiota
peroxidase activity

Opis:

Wheat grain discoloration, a worldwide disease that lowers grain quality and decreases grain yield, does not have a single etiology. It has been proposed that it is a consequence of an abiotic mechanism, a response to environmental conditions or enzymatic activity. It has also been suggest that it is a biotic mechanism, a fungal infection principally by Alternaria spp. and Bipolaris sorokiniana. The present work was carried out to analyze the possible etiology of this disease in nine durum wheat genotypes from two localities of southern Buenos Aires province (Argentina) on two sowing dates. Incidence (percentage of grain discoloration) was recorded and mycobiota associated with this pathology was registered following ISTA rules. Peroxidase activity in an extract obtained from grains belonging to genotypes of the locality that showed the highest incidence was measured. The incidence among genotypes, localities and sowing dates varied, although the genotypes with the higher and lower values of incidence were the same for all the variables tested. The fungus Alternaria spp. was isolated the most frequently followed by Fusarium spp., while Bipolaris sorokiniana was found the least frequently. Peroxidase activity showed that all the treatments had similar levels of enzymatic activity, but there was no clear differentiation between controls either between genotypes with the lowest or the highest incidence values. This suggests that peroxidase activity did not have a clear relationship with grain discoloration. In this research, it is presumed that fungal infection is the main cause of this disease.

Źródło:

Journal of Plant Protection Research; 2020, 60, 1; 14-20
1427-4345

Pojawia się w:

Journal of Plant Protection Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 14.

Tytuł:

pH Profile of cytochrome c-catalyzed tyrosine nitration

Autorzy:

Kambayashi, Yasuhiro
Hitomi, Yoshiaki
Kodama, Norio
Kubo, Masayuki
Okuda, Junna
Takemoto, Kei
Shibamori, Masafumi
Takigawa, Tomoko
Ogino, Keiki

Powiązania:

https://bibliotekanauki.pl/articles/1041220.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

pseudo-peroxidase
pH
cytochrome c
nitrite
nitrotyrosine

Opis:

In the present study, we investigated how cytochrome c catalyzed the nitration of tyrosine at various pHs. The cytochrome c-catalyzed nitration of tyrosine occurred in proportion to the concentration of hydrogen peroxide, nitrite or cytochrome c. Thecytochromec-catalyzed nitration of tyrosine was inhibited by catalase, sodium azide, cystein, and uric acid. These results show that the cytochrome c-catalyzednitrotyrosine formation was due to peroxidase activity. The rate constant between cytochrome c and hydrogen peroxide within the pH range of 3 - 8 was the largest at pH 6 (37°C). The amount of nitrotyrosine formed was the greatest at pH 5. At pH 3, onlycytochromec-independent nitration of tyrosine occurred in the presence of nitrite. At this pH, the UV as well as visible spectrum of cytochrome c was changed by nitrite, even in the presence of hydrogen peroxide, probably via the formation of a heme iron - nitric oxide complex. Due to this change, the peroxidase activity of cytochrome c was lost.

Źródło:

Acta Biochimica Polonica; 2006, 53, 3; 577-584
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 15.

Tytuł:

Blood leukocytes and eosinophil peroxidase are not related to faecal egg counts in Polish Wrzosowka hoggets naturally infected with gastrointestinal nematodes

Autorzy:

Moskwa, B.
Doligalska, M.
Cabaj, W.

Powiązania:

https://bibliotekanauki.pl/articles/839118.pdf

Data publikacji:

1998

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

parasite
gastrointestinal nematode
blood
nematode
leucocyte
eosinophil peroxidase

Źródło:

Annals of Parasitology; 1998, 44, 3
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

Plant peroxidases and nitrogen metabolism: interactions with nitrates and nitrites

Autorzy:

Minibayeva, F.
Galeeva, E.
Gurjanov, O.
Viktorova, L.

Powiązania:

https://bibliotekanauki.pl/articles/80640.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
peroxidase
plant
nitrogen metabolism
oxidoreductase
nitrate
nitrite

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Deuterium isotope effects in oxidation of dopamine and norepinephrine catalyzed by horseradish peroxidase

Autorzy:

Byszewska, W.
Pająk, M.
Kańska, M.

Powiązania:

https://bibliotekanauki.pl/articles/146852.pdf

Data publikacji:

2013

Wydawca:

Instytut Chemii i Techniki Jądrowej

Tematy:

deuterium
dopamine (DA)
norepinephrine
isotope effects
oxidation
peroxidase

Opis:

Deuterium kinetic isotope effects (KIE’s) in the reaction of oxidation of dopamine (DA) catalyzed by the enzyme horseradish peroxidase (HRP, EC 1.11.1.7) was determined using a non-competitive spectrophotometric method. For kinetic studies, the deuterium ring labelled isotopomer [2’,5’,6’-2H3]-dopamine was synthesized using acid catalyzed isotopic exchange between authentic dopamine and heavy water. Deuterium solvent isotope effects (SIE’s) for dopamine and norepinephrine were determined separately for the enzymatic oxidation carried out in the presence or absence of hydrogen peroxide. Some mechanistic details of enzymatic oxidation of dopamine and norepinephrine to corresponding catecholchromes catalyzed by HRP were discussed.

Źródło:

Nukleonika; 2013, 58, 4; 475-479
0029-5922
1508-5791

Pojawia się w:

Nukleonika

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 18.

Tytuł:

Właściwości fizykochemiczne produktów enzymatycznego utleniania skrobi
Physicochemical properties of products of enzymatic oxidation of starch

Autorzy:

Roczkowska, M.
Siemion, P.
Kaczmarek, A.

Powiązania:

https://bibliotekanauki.pl/articles/410267.pdf

Data publikacji:

2013

Wydawca:

Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane

Tematy:

skrobia
skrobia utleniona
utlenianie enzymatyczne
peroksydaza ligninowa
LiP
peroksydaza manganozależna
MnP
starch
oxidized starch
enzymatic oxidation
lignin peroxidase
manganese peroxidase

Opis:

Reakcje enzymatyczne coraz częściej uzupełniają i zastępują wszelkie reakcje chemiczne. Są wysoce selektywne i precyzyjne, gdyż enzymy działają na konkretne grupy czy wiązania chemiczne. Przykładem enzymów wykorzystywanych w procesach utleniania są lakazy oraz peroksydazy – ligninowa (LiP) i manganozależna (MnP). Niniejsza praca została poświęcona badaniom właściwości fizykochemicznych skrobi utlenionych enzymatycznie przy użyciu peroksydazy ligninowej (LiP) oraz manganozależnej (MnP). Badaniom zostały poddane utlenione skrobie kukurydziane oraz ziemniaczane. Badania wykazały, że we wszystkich analizowanych próbkach doszło do utlenienia enzymatycznego. Produkty modyfikacji odznaczały się odmiennymi właściwościami fizykochemicznymi w stosunku do próbek natywnych skrobi tego samego gatunku. Zmianie uległa zdolność pochłaniania wody, rozpuszczalność w wodzie i trwałość w wysokich temperaturach.
The enzymatic reactions increasingly replace and complement any chemical reactions. They are highly selective and precise, because the enzymes act on specific groups or chemical bonds. The examples of enzymes applied in the oxidation processes are laccases, lignin (LiP) and manganese (MnP) peroxidases. This work has been devoted to the studies on physicochemical properties of the enzymatically oxidized starches using lignin (LiP) and manganese (MnP) peroxidases. The studies were performed on oxidized corn and potato starches. The studies have shown that the enzymatic oxidation had occurred in all of the analyzed samples. The products of modification showed different physicochemical properties in comparison to native starch samples of the same species. The water absorption capacity, water solubility and stability at high temperatures have been altered.

Źródło:

Chemistry, Environment, Biotechnology; 2013, 16; 85-96
2083-7097

Pojawia się w:

Chemistry, Environment, Biotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

Double-edged sword behaviour of gallic acid and its interaction with peroxidases in human microvascular endothelial cell culture (HMEC-1). Antioxidant and pro-oxidant effects

Autorzy:

Serrano, José
Cipak, Ana
Boada, Jordi
Gonzalo, Hugo
Cacabelos, Daniel
Cassanye, Anna
Pamplona, Reinald
Zarkovic, Neven
Portero-Otin, Manuel

Powiązania:

https://bibliotekanauki.pl/articles/1040403.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

gallic acid
peroxidase
pro-oxidant
antioxidant
HMEC-1

Opis:

A previous report from our group had shown in vitro a direct interaction between peroxidases and dietary antioxidants at physiological concentrations, where in the absence of H2O2, the antioxidants could serve as oxidizing substrates for the peroxidases. However, the physiological relevance of those findings had not been evaluated. The main objective of this study was to determine whether the oxidizing products produced in the interaction between peroxidase and gallic acid at a physiological concentration of 1 µM may promote cell death or survival in a human microvascular endothelial cell line (HMEC-1). Our findings suggested that gallic acid may show a double-edged sword behaviour, since in the absence of H2O2 it may have a pro-oxidant effect which may promote cell injury (evidenced by LDH, Crystal Violet and calcein AM viability/citotoxicity assays), while in the presence of H2O2, gallic acid may act as an antioxidant inhibiting oxidative species produced in the peroxidase cycle of peroxidases. These observations were confirmed with several oxidative stress biomarkers and the evaluation of the activation of cell survival pathways like AKT and MAPK/ERK.

Źródło:

Acta Biochimica Polonica; 2010, 57, 2; 193-198
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 20.

Tytuł:

Effect of copper(II) the activity of glutathione peroxidase in patients with head and neck cancer

Autorzy:

Malinowska, Katarzyna
Morawiec-Sztandera, Alina
Majsterek, Ireneusz
Kaczmarczyk, Dariusz

Powiązania:

https://bibliotekanauki.pl/articles/1398625.pdf

Data publikacji:

2016

Wydawca:

Index Copernicus International

Tematy:

pyrazole complex
glutathione peroxidase
head and neck cancer

Opis:

Introduction: Head and neck squamous cell carcinoma (HNSCC) accounts for about 6% of all malignant cancers. In the epidemiology of oral cavity neoplasm, important risk factors include: tobacco smoking, alcohol abuse, bad oral hygiene, papilloma virus infection, riboflavin and iron deficiency. Objective: The objective of the investigation was a synthesis of Cu(II) complex and the evaluation of antioxidative enzymatic barrier in red blood cells of patients with head and neck tumor as well as in the control group. Materials and methods: For the investigation conduction, a consent of Bioethics Committee number RNN/142/09/KB was obtained. Blood for the examination was obtained from the patients of the Dapartment of Head and Neck Neoplasms Surgery Medical University of Łódź. The experiment was conducted on the group of 40 patients with HNSCC and 40 healthy people, using spectrophotometric method, glutathione peroxidase was marked. Results: The investigation was conducted on the hemolysate obtained from the patients that were divided into two groups – a study group (1 and 2), which consisted of patients diagnosed with head and neck cancer and a control group (1 and 2) – healthy people. A significant statistical result for GPX occurred in control-1 and study-1 group with complex compound Cu(II) (p<0,001). Conclusions: Presented research prove, that complex compound Cis-dichlorobis(N1-hydroxymethyl-3methylpyrazole-κN2)copper (II) has an impact on the activity of the antioxidative GPX enzyme.

Źródło:

Polish Journal of Otolaryngology; 2016, 70, 6; 20-25
0030-6657
2300-8423

Pojawia się w:

Polish Journal of Otolaryngology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 21.

Tytuł:

Effect of priming of seeds of Medicago sativa "Bami" with gibberellic acid on germination, seedlings growth and antioxidant enzymes activity under salinity stress

Autorzy:

Younesi, O.
Moradi, A.

Powiązania:

https://bibliotekanauki.pl/articles/1828.pdf

Data publikacji:

2014

Wydawca:

Instytut Ogrodnictwa

Tematy:

salinity
seed priming
Medicago sativa
gibberellic acid
germination
seedling growth
growth
antioxidative enzyme
alfalfa
guaiacol peroxidase
catalase
ascorbate peroxidase
glutathione reductase

Źródło:

Journal of Horticultural Research; 2014, 22, 2
2300-5009

Pojawia się w:

Journal of Horticultural Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 22.

Tytuł:

Comparison of effect of parenteral and oral supplementation of Selenium and vitamin E on selected antioxidant parameters and udder health of dairy cows

Autorzy:

Vasiľ, M.
Zigo, F.
Farkašová, Z.
Pecka-Kielb, E.
Bujok, J.
Illek, J.

Powiązania:

https://bibliotekanauki.pl/articles/16539105.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Czasopisma i Monografie PAN

Tematy:

dairy cows
calving
colostrum
glutathione peroxidase
milk malondialdehyde
mastitis

Opis:

The aim of this study was to compare the effect of parenteral and oral supplementation of Selenium (Se) and vitamin E (VTE) on selected antioxidant parameters in blood and colostrum as well as their effect on the incidence of mastitis in dairy cows during the final phase of gravidity (6 weeks) and first two weeks after calving. For the practical part of the study 36 dairy cows of Slovak pied breed in the second to fourth lactation-gestation cycle were selected. The animals weredivided into three groups: the control (C) and two experimental groups (D1 and D2). The selected groups were treated as follows: in group D1 products containing Se (Selevit inj.) and vitamin E (Erevit sol. inj.) were administered intramuscularly twice, six and three weeks prior to parturition; in group D2 a vitamin-minerals supplement in the form of sodium selenite (Na2SeO3) and dl-α-tocopherol acetate were supplemented orally for six weeks calving. The blood samples were collected from the vena jugularis in dairy cows approximately 42 days before calving (control sampling), on parturition day, and the 14th day after calving. Higher concentrations of Se and VTE were found in the blood plasma samples of both experimental groups collected on the day of parturition. In addition, the orally supplemented group (D2) showed higher Se and α-tocopherol concentrations in blood plasma on the14th day after calving as well a reduction of occurrence of mastitis by about 25 % compared to the control group. The relationship between inflammatory response and oxidative stress was also confirmed. The concentrations of milk malondialdehyde indicating lipid peroxidation during mastitis were significantly higher in milk samples from infected cows than in milk samples from healthy animals in each monitored group. In order to prevent oxidative stress and moderate inflammatory response in dairy cows it is very important to optimally balance their nutritive needs with an appropriate ratio of Se and VTE supplements. Therefore we still recommend supplementation of the cows’ postpartum dietwith 0.5 mg of Se/kg dry matter (DM) and 102 mg of dl-α-tocopherol acetate/kg DM to stabilize their optimal blood levels, stimulate the activity of glutathione peroxidase and reduce the incidence of mastitis.

Źródło:

Polish Journal of Veterinary Sciences; 2022, 25, 1; 155-164
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 23.

Tytuł:

Selenium supplementation to chronic kidney disease patients on hemodialysis does not induce the synthesis of plasma glutathione peroxidase

Autorzy:

Zachara, Bronislaw
Gromadzinska, Jolanta
Zbrog, Zbigniew
Swiech, Rafal
Wasowicz, Wojciech
Twardowska, Ewa
Jablonska, Ewa
Sobala, Wojciech

Powiązania:

https://bibliotekanauki.pl/articles/1040656.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

hemodialysis
selenium supplementation
glutathione peroxidase
chronic kidney disease
plasma

Opis:

Background: Numerous authors have shown that selenium (Se) concentration and glutathione peroxidase (GSH-Px) activity in plasma of chronic kidney disease (CKD) patients are lower than in healthy subjects, but there are only few publications on the level of GSH-Px protein in those patients and no reports on the effect of Se supplementation to HD patients on the level of this enzyme. Subjects and Methods: Se concentration and GSH-Px protein level in plasma were measured in a group of 30 CKD patients on hemodialysis (HD) supplemented with 200 µg Se/day for 3 months, and 28 patients on HD administered with placebo. Se concentration was measured by graphite furnace atomic absorption spectrometry and plasma GSH-Px protein level by the sandwich ELISA method using polyclonal antibody specific for human plasma GSH-Px. Results: Se concentration in patients on placebo did not change throughout the 3-month study period, but increased significantly in Se supplemented group. Se supplementation to CKD patients on HD had no effect on the level of GSH-Px protein. Conclusions: The lack of GSH-Px protein in CKD patients on HD is not linked to Se deficiency since the level of this element increased after Se supplementation while enzyme protein level did not change. The damaged kidney of HD patients is unable to synthesize GSH-Px, even after induction with selenium.

Źródło:

Acta Biochimica Polonica; 2009, 56, 1; 183-187
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Selenium, glutathione and glutathione peroxidases in blood of patients with chronic liver diseases.

Autorzy:

Czuczejko, Jolanta
Zachara, Bronisław
Staubach-Topczewska, Ewa
Halota, Waldemar
Kędziora, Józef

Powiązania:

https://bibliotekanauki.pl/articles/1043405.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

selenium
glutathione peroxidase
chronic liver disease
glutathione
oxidative stress

Opis:

Disturbances in the antioxidant system could play a role in pathogenesis of chronic liver disease. The aim of our study was to evaluate the levels/activities of antioxidants in blood of patients with chronic liver disease. We estimated selenium and glutathione concentrations and glutathione peroxidase activities in blood of 59 patients with chronic hepatitis B or C virus infection (group 1) and 64 patients with alcoholic, autoimmune or cryptogenic chronic liver disease (group 2). The results were compared with 50 healthy controls. Whole blood and plasma selenium and red cell glutathione concentrations were significantly lower in the patients compared with the controls. Red cell glutathione peroxidase activity was slightly reduced in both subgroups of group 1 and in group 2 with normal alanine aminotransferase values. Plasma glutathione peroxidase activity was slightly but significantly higher in patients with elevated aminotransferase values. The findings suggest that disturbances in antioxidant parameters in blood of patients with chronic liver disease may be the cause of the peroxidative damage of cells.

Źródło:

Acta Biochimica Polonica; 2003, 50, 4; 1147-1154
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 25.

Tytuł:

Changes of antioxidant enzymes of mung bean [Vigna radiata (L.) R. Wilczek] in response to host and non-host bacterial pathogens

Autorzy:

Farahani, A.S.
Taghavi, M.

Powiązania:

https://bibliotekanauki.pl/articles/65764.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

antioxidative enzyme
enzyme
mung bean
Vigna radiata
plant response
host pathogen
non-host pathogen
resistance
bacterial pathogen
ascorbate peroxidase
catalase
peroxidase
superoxide dismutase

Opis:

The natural resistance against the majority of potential pathogens that exist in most plant species is known as non-host resistance. Several reports suggest the role of antioxidant enzymes in non-host resistance. We assayed the expression or activity of four scavenging enzymes during non-host pathogen-plant interaction (Xanthomonas hortorum pv. pelargonii/mung bean) and host pathogen-plant interaction (Xanthomonas axonopodis pv. phaseoli/mung bean). The expression of superoxide dismutase (SOD) and ascorbate peroxidase (APX) and the enzyme activity of catalase (CAT) and peroxidase (POX) were investigated. The activities of CAT and POX were higher during non-host pathogen invasion vs. host pathogen attack. The expression of SOD and APX were also different between compatible and incompatible interactions. The expression of SOD and APX were higher in the incompatible compared to the compatible interaction. Additionally, induction of the antioxidant enzymes in response to non-host pathogen was earlier than induction in response to host pathogen. Such information is important for plant breeders, and useful when looking for alternative control strategies as well.

Źródło:

Journal of Plant Protection Research; 2016, 56, 1
1427-4345

Pojawia się w:

Journal of Plant Protection Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 26.

Tytuł:

Wpływ zmian ciśnienia otoczenia na aktywność peroksydazy glutationowej (GPX) i atalazy (CAT) we krwi nurków : badania wstępne
The effect of ambient pressure changes on the activity of glutathione peroxidase (GPX) and catalase (CAT) in the blood divers : preliminary results

Autorzy:

Włodarski, A.
Woźniak, A.
Mila-Kierzenkowska, C.
Sutkowy, P.

Powiązania:

https://bibliotekanauki.pl/articles/366531.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Medycyny i Techniki Hiperbarycznej

Tematy:

ciśnienie
nurkowanie
peroksydaza glutationowa
katalaza
pressure
diving
glutathione peroxidase
catalase

Opis:

Zmiana warunków otoczenia jest stresem dla organizmu, który może prowadzić do wzmożonej generacji reaktywnych form tlenu i licznych uszkodzeń w obrębie komórek. Istotną rolę w przeciwdziałaniu tym uszkodzeniom pełnią enzymy antyoksydacyjne. Celem niniejszej pracy było określenie wpływu zmian ciśnienia otoczenia w warunkach nurkowania na aktywność peroksydazy glutationowej oraz katalazy. W badaniu wzięło udział 11 płetwonurków w wieku od 18 do 41 lat. Badani spędzili 40 min w jeziorze, w wodzie o temperaturze 13° C, schodząc maksymalnie na głębokość około 9 m. Podczas zanurzenia wszyscy oddychali powietrzem. Krew do badań pobrano z żyły odłokciowej dwukrotnie: przed zanurzeniem w wodzie (kontrola) oraz bezpośrednio po wynurzeniu. W pracy wykazano tendencję do wzrostu aktywności katalazy oraz tendencję do obniżania się aktywności peroksydazy glutationowej, ale zmiany te nie były istotne statystycznie. Ciśnienie otoczenia wywierane przez wodę podczas nurkowania nie ma istotnego wpływu na aktywność peroksydazy glutationowej oraz katalazy w erytrocytach. Może to sugerować, że nie doszło do zwiększonej generacji nadtlenku wodoru będącego substratem reakcji katalizowanych przez oba enzymy. Brak istotnych statystycznie zmian aktywności badanych enzymów antyoksydacyjnych może być efektem zmian przystosowawczych w organizmie osób nurkujących.
The changes in ambient conditions are usually stress factor for the organism, which may lead to increased generation of reactive oxygen species and numerous damages within the cells. The important role in counteracting of free radical damages to cells is played by antioxidant enzymes. The aim of this study was to determine the impact of changes in ambient pressure during diving on activity of selected antioxidant enzymes: glutathione peroxidase and catalase . The study involved eleven divers, aged from 18 to 41 years. Subjects spent 40 minutes in the lake, in water at 13° C, going down to a depth of about 9 m. All divers breathe with the air. Blood samples were taken from basilica vein twice: before immersion in water (control) and immediately after surfacing. The study showed an increasing trend in catalase activity and trend to decrease in glutathione peroxidase activity, but the changes were not statistically significant. Ambient pressure exerted by the water during diving has no significant effect on the activity of glutathione peroxidase and catalase in erythrocytes. This may suggest, that there was no increased generation of hydrogen peroxide which is a substrate of the reaction catalyzed by two enzymes. No statistically significant differences in the activity of antioxidant enzymes could be due to adaptive changes in the body of divers.

Źródło:

Polish Hyperbaric Research; 2013, 1(42); 7-25
1734-7009
2084-0535

Pojawia się w:

Polish Hyperbaric Research

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 27.

Tytuł:

Enancjoselektywna enzymatyczna desymetryzacja katalizowana oksydoreduktazami. Reakcje utleniania. Część 2
Enantioselective enzymatic desymmetrization catalyzed by oxidoreductases. Oxidation reactions. Part 2

Autorzy:

Karczmarska-Wódzka, A.
Kołodziejska, R.
Tafelska-Kaczmarek, A.
Studzińska, R.
Wróblewski, M.
Augustyńska, B.

Powiązania:

https://bibliotekanauki.pl/articles/172457.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Chemiczne

Tematy:

dioksygenaza
oksydaza
peroksydaza
reakcja utleniania
dioxygenase
oxidase
peroxidase
oxidation reaction

Opis:

In continuation of our work, we herein describe next enzyme classes applied for oxidation reaction. Dioxygenases, oxidases, and peroxidases are successfully used in the synthesis of desymmetrization products with high yields and enantiomeric excesses. Aromatic dioxygenases, such as toluene dioxygenase (TDO), naphthalene dioxygenase (NDO), and biphenyl dioxygenase (BPDO) found in the prokaryotic microorganisms are enzymes belonging to the dioxygenase class and are the most commonly used in organic synthesis. The α-oxidation of various fatty acids in the presence of an α-oxidase from germinating peas is one of the few examples of oxidases application in asymmetric organic synthesis. The intermediary α-hydroxyperoxyacids can undergo two competing reactions: decarboxylation of the corresponding aldehydes or reduction to the (R)-2-hydroxy acids. In order to eliminate the competitive decarboxylation reaction tin(II) chloride is used as an in situ reducing agent. Peroxidases are the redox enzymes found in various sources such as animals, plants, and microorganisms. Due to the fact that, in contrast to monooxygenases, no additional cofactors are required, peroxidases are highly attractive for the preparative biotransformation. Oxidation reactions catalyzed by (halo)peroxydases are also often used in organic synthesis. N-Oxidation of amines, for instance, leads to the formation of the corresponding aliphatic N-oxides, aromatic nitro-, or nitrosocompounds. From a preparative synthesis standpoint, however, sulfoxidation of thioether is important since it was proven to proceed in a highly stereo- and enantioselective manner. Furthermore, depending on the source of haloperoxidase, chiral sulfoxides of opposite configurations can be obtained.

Źródło:

Wiadomości Chemiczne; 2015, 69, 1-2; 53-64
0043-5104
2300-0295

Pojawia się w:

Wiadomości Chemiczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 28.

Tytuł:

Antioxidant defence in maize cultivars triggered by the two-spotted spider mite attack and soil drought – a comparative study

Autorzy:

Czapla, A.
Grudkowska, M.
Miazek, A.
Zagdanska, B.
Kielkiewicz, M.

Powiązania:

https://bibliotekanauki.pl/articles/80869.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
antioxidant defense
maize cultivar
two-spotted spider mite
Tetranychus urticae
soil drought
oxidative stress
ascorbate peroxidase
catalase
glutathione reductase
peroxidase
polyphenol oxidase

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 29.

Tytuł:

Redox state modulation in rice and its implications for plant development and stress responses

Autorzy:

Caverzan, A.
Ribeiro, C.
Lazzarotto, F.
Passaia, G.
Rosa, S.
Garighan, J.
Piovesana, M.
Carvalho, F.
Albenisio, J.
Margis, R.
Margis-Pinheiro, M.

Powiązania:

https://bibliotekanauki.pl/articles/79908.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
reactive oxygen species
scavenging enzyme
detoxification
redox state
rice
plant development
stress response
plant cell
biochemical property
antioxidative enzyme
ascorbate peroxidase
glutathione peroxidase

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Antioxidant supplementation to medium for in vitro embryo production in Felis catus

Autorzy:

Cocchia, N.
Tafuri, S.
Del Prete, C.
Palumbo, V.
Esposito, L.
Avallone, L.
Ciani, F.

Powiązania:

https://bibliotekanauki.pl/articles/2087464.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

assisted reproduction technology
superoxide dismutase
glutathione peroxidase
catalase
domestic cat

Źródło:

Polish Journal of Veterinary Sciences; 2019, 3; 573-579
1505-1773

Pojawia się w:

Polish Journal of Veterinary Sciences

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Antioxidant status in erythrocytes of cystic fibrosis children.

Autorzy:

Laskowska-Klita, Teresa
Chełchowska, Magdalena

Powiązania:

https://bibliotekanauki.pl/articles/1044199.pdf

Data publikacji:

2001

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

superoxide dismutase
catalase
glutathione peroxidase
vitamin E
erythrocytes
cystic fibrosis

Opis:

Activities of superoxide dismutase, catalase and glutathione peroxidase in erythrocytes of cystic fibrosis children were studied in order to estimate the severity of their deficiency. Our results point to increased susceptibility of erythrocytes of cystic fibrosis subjects to oxidative injury and indicate that the antioxidant status of patients should be carefully monitored.

Źródło:

Acta Biochimica Polonica; 2001, 48, 1; 283-285
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

The effect of methylprednisolone on the dynamics of oxygen uptake and peroxidase and superoxide dismutase activities in skeletal muscles of mice infected with Trichinella spiralis larvae

Autorzy:

Wandurska-Nowak, E.
Boczon, K.
Derda, M.

Powiązania:

https://bibliotekanauki.pl/articles/838559.pdf

Data publikacji:

1998

Wydawca:

Polskie Towarzystwo Parazytologiczne

Tematy:

parasite
superoxide dismutase
mouse
mice
larva
peroxidase
Trichinella spiralis
skeletal muscle

Źródło:

Annals of Parasitology; 1998, 44, 3
0043-5163

Pojawia się w:

Annals of Parasitology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Reakcja fasoli szparagowej na zasolenie podłoża
French bean reaction on basis salinity

Autorzy:

Herman, B.
Biczak, R.
Rychter, P.

Powiązania:

https://bibliotekanauki.pl/articles/410291.pdf

Data publikacji:

2010

Wydawca:

Uniwersytet Humanistyczno-Przyrodniczy im. Jana Długosza w Częstochowie. Wydawnictwo Uczelniane

Tematy:

zasolenie
fasola
karotenoidy
katalaza
peroksydaza
salinity
bean
chlorophyll
carotenoides
catalase
peroxidase

Opis:

W przeprowadzonym eksperymencie wazonowym określono wpływ zróżnicowanego zasolenia podłoża na aktywność katalazy i peroksydazy oraz zawartość chlorofilu całkowitego i karotenoidów w liściach fasoli szparagowej (Phaseolus vulgaris L., cv Złota Saxa). Rośliny potraktowano doglebowo roztworami chlorku sodu zawierającymi: 5, 10, 20 i 30 mM NaCl. Uzyskane wyniki wykazały, że zarówno zmiany aktywności badanych enzymów, jak i zawartości barwników asymilacyjnych w liściach roślin były w dużym stopniu zależne od poziomu zasolenia gleby. Zasolenie podłoża prowadziło do wzrostu aktywności peroksydazy w liściach fasoli, wielkość zmian była wprost proporcjonalna do poziomu zasolenia. Aktywność katalazy w liściach fasoli rosnącej na podłożu o niższych poziomach zasolenia była zbliżona do aktywności w roślinach kontrolnych, podczas gdy wyższe zasolenia wywołały spadek aktywności tego enzymu. Zasolenie podłoża wpłynęło także na obniżenie zawartości chlorofilu i karotenoidów w liściach fasoli, przy czym zmiany te były tym większe im wyższy był poziom zasolenia gleby.
The effect of various soil salinities on changes of catalase and peroxidase activity, content of total chlorophyll and carotenoides in leaves of French bean (Phaseolus vulgaris L., cv Golds Saxa) in the pot experiments was determined. The plants were watered with a solution of sodium chloride containing 5, 10, 20 and 30 mM NaCl. The results have proved that the salinity levels applied to the basis influenced not only the change in the activity of the enzymes studied but also assimilation pigments content in leaves of plants. The basis salinity caused increase the peroxidase activity in leaves of bean and was directly proportional to the level of basis salinity. Activity of the catalase in leaves of bean growing in soil containing lower levels of salinity was similar to the activity in control plants, while higher salinities caused considerable drop in activity of these enzyme. As expected excessive salinity of soil caused decrease of chlorophyll and carotenoides level in tested plants. The higher salinity level was, the more erident changes were observed.

Źródło:

Chemistry, Environment, Biotechnology; 2010, 14; 111-120
2083-7097

Pojawia się w:

Chemistry, Environment, Biotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 34.

Tytuł:

Salivary aldehyde dehydrogenase - temporal and population variability, correlations with drinking and smoking habits and activity towards aldehydes contained in food

Autorzy:

Giebułtowicz, Joanna
Dziadek, Marta
Wroczyński, Piotr
Woźnicka, Katarzyna
Wojno, Barbara
Pietrzak, Monika
Wierzchowski, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/1040385.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

superoxide dismutase
fluorescence
aldehyde dehydrogenase
aldehydes
nutrition safety
saliva
salivary peroxidase

Opis:

Fluorimetric method based on oxidation of the fluorogenic 6-methoxy-2-naphthaldehyde was applied to evaluate temporal and population variability of the specific activity of salivary aldehyde dehydrogenase (ALDH) and the degree of its inactivation in healthy human population. Analyzed was also its dependence on drinking and smoking habits, coffee consumption, and its sensitivity to N-acetylcysteine. Both the specific activity of salivary ALDH and the degree of its inactivation were highly variable during the day, with the highest activities recorded in the morning hours. The activities were also highly variable both intra- and interpersonally, and negatively correlated with age, and this correlation was stronger for the subgroup of volunteers declaring abstinence from alcohol and tobacco. Moderately positive correlations of salivary ALDH specific activity with alcohol consumption and tobacco smoking were also recorded (rs ~0.27; p=0.004 and rs =0.30; p=0.001, respectively). Moderate coffee consumption correlated positively with the inactivation of salivary ALDH, particularly in the subgroup of non-drinking and non-smoking volunteers. It was found that mechanical stimulation of the saliva flow increases the specific activity of salivary ALDH. The specific activity of the salivary ALDH was strongly and positively correlated with that of superoxide dismutase, and somewhat less with salivary peroxidase. The antioxidant-containing drug N-acetylcysteine increased activity of salivary ALDH presumably by preventing its inactivation in the oral cavity. Some food-related aldehydes, mainly cinnamic aldehyde and anisaldehyde, were excellent substrates of the salivary ALDH3A1 enzyme, while alkenals, particularly those with short chain, were characterized by lower affinity towards this enzyme but high catalytic constants. The protective role of salivary ALDH against aldehydes in food and those found in the cigarette smoke is discussed, as well as its participation in diminishing the effects of alcohol- and smoking-related oxidative stress.

Źródło:

Acta Biochimica Polonica; 2010, 57, 3; 361-368
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Red blood cell and plasma glutathione peroxidase activities and selenium concentration in patients with chronic kidney disease: A review

Autorzy:

Zachara, Bronisław
Gromadzińska, Jolanta
Wąsowicz, Wojciech
Zbróg, Zbigniew

Powiązania:

https://bibliotekanauki.pl/articles/1041155.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

hemodialysis
selenium
kidney transplantation
glutathione peroxidase
chronic kidney disease
antioxidants
plasma

Opis:

The metabolism of oxygen in aerobic organisms leads to generation of reactive oxygen species (ROS). These entities are able to oxidize almost all classes of macromolecules, including proteins, lipids and nucleic acids. The physiological level of ROS is usually regulated by antioxidant defense mechanisms. There are at least three groups of antioxidant enzymes: superoxide dismutases, catalases and glutathione peroxidases (GSH-Pxs) which neutralize ROS. The trace elements (copper, zinc and selenium) bound to the active sites of the above listed enzymes play an important role in the antioxidant defense system. In mammals, a major function of selenium (Se) and Se-dependent GSH-Pxs is to protect cells from oxidative stress. Selenium concentrations and GSH-Px activities are altered in blood components of chronic kidney disease (CKD) patients. The Se level is frequently lower than in healthy subjects and the concentration very often decreases gradually with advancing stage of the disease. Studies on red cell GSH-Px activity in CKD patients reported its values significantly lower, significantly higher and lower or higher, but not significantly as compared with healthy subjects. On the other hand, all authors who studied plasma GSH-Px activity have shown significantly lower values than in healthy subjects. The degree of the reduction decreases gradually with the progression of the disease. High inverse correlations were seen between plasma GSH-Px activity and creatinine level. A gradual decrease in plasma GSH-Px activity in CKD patients is due to the fact that this enzyme is synthesized predominantly in the kidney and thus the impairment of this organ is the cause of the enzyme's lower activity. Se supplementation to CKD patients has a slightly positive effect in the incipient stage of the disease, but usually no effect was observed in end-stage CKD. Presently, kidney transplantation is the only treatment that may restore plasma Se level and GSH-Px activity in patients suffering from end-stage CKD. A few studies have shown that in kidney recipients, plasma Se concentration and GSH-Px activity are restored to normal values within a period of 2 weeks to 3 months following surgery and thus it can be acknowledged that Se supplementation to those patients has a positive effect on plasma GSH-Px activity.

Źródło:

Acta Biochimica Polonica; 2006, 53, 4; 663-677
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 36.

Tytuł:

Similarity between enzymatic and electrochemical oxidation of 2-hydroxyacridinone, the reference compound of antitumor imidazoacridinones.

Autorzy:

Mazerska, Zofia

Powiązania:

https://bibliotekanauki.pl/articles/1043630.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

peroxidase-mediated oxidation
antitumor acridinones
enzymatic activation
enzymatic and electrochemical transformations

Opis:

The present work is part of a wide research project aimed to elucidate the mechanism of the metabolic activation of the antitumor imidazoacridinone agent C-1311 selected for clinical trials. The objectives of the investigations presented here were: (i) to examine the enzymatic transformation of the reference compound 2-hydroxyacridinone and (ii) to test the similarity between enzymatic and electrochemical oxidation of acridinone compounds. This similarity was searched with respect to the usefulness of the electrochemical results for further studies on the metabolic oxidation of imidazoacridinone antitumor drugs. The enzymatic oxidation of 2-hydroxyacridinone was performed with a model system containing various amounts of horseradish peroxidase and hydrogen peroxide and was followed by UV-VIS spectroscopy and by HPLC. One product of the reaction was isolated and its chemical structure was identified. It was shown that 2-hydroxyacridinone was transformed by the studied system in a manner dependent on the amount of the enzyme and on the compound/H2O2 ratio. While under mild reaction conditions the transformation ran slowly to yield only one product, p1, independently of the reaction time, higher enzyme concentration resulted in several steps of transformation. Product p1 turned out to be a dimer: 1,1-bi(2-hydroxyacridinone). A comparison of the results of the enzymatic transformations of 2-hydroxyacridinone presented here with studies on the electrochemical oxidation reported earlier allowed us to show both transformations to be similar as far as the reaction pathway and two reaction products are concerned.

Źródło:

Acta Biochimica Polonica; 2003, 50, 2; 515-525
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 37.

Tytuł:

Porównanie oddziaływania selenu na aktywność peroksydazową gleby skażonej olejem napędowym lub przepracowanym olejem silnikowym
Comparison of selenium effect on peroxidase activities in soil contaminated with diesel oil and spent engine oil

Autorzy:

Strek, M.
Telesinski, A.

Powiązania:

https://bibliotekanauki.pl/articles/36028.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

gleby
selen
zanieczyszczenia gleb
olej napedowy
olej silnikowy
olej silnikowy przepracowany
peroksydaza
aktywnosc peroksydazowa
soil
selenium
soil contaminant
diesel fuel
engine oil
peroxidase
peroxidase activity

Opis:

W pracy przedstawiono wyniki oddziaływania oleju napędowego, przepracowanego oleju silnikowego oraz selenu (IV i VI), na aktywność peroksydazową gleby. Doświadczenie przeprowadzono w warunkach laboratoryjnych na piasku gliniastym o zawartości węgla organicznego 8,7 g·kgˉ¹. Do próbek gleby wprowadzono w różnych kombinacjach kwas selenowy (IV) lub kwas selenowy (VI) (ilość dodanego Se wynosiła 0,05 mmol·kgˉ¹) oraz przepracowany olej silnikowy lub olej napędowy w ilościach 2, 10 i 50 g·kgˉ¹. Wszystkie próbki doprowadzono do 60% maksymalnej pojemności wodnej i przechowywano w szklanych pojemnikach typu twist, w stałej temperaturze 20°C. Aktywność peroksydaz oznaczono spektrofotometrycznie w 1., 7., 14., 28., 56. i 112. dniu doświadczenia. Skażenie gleby olejem napędowym oraz przepracowanym olejem silnikowym spowodowało stymulację aktywności peroksydaz. Wprowadzenie selenu do gleby nieskażonej substancjami ropopochodnymi wywołało zmiany aktywności peroksydaz. Jedynie dodatek selenu VI do gleby zawierającej olej napędowy w dawce 2 g·kgˉ¹ spowodował istotny wzrost średniej aktywności peroksydaz glebowych.
This paper describes the impact of diesel oil, spent engine oil and selenium (IV and VI) on peroxidase activity in soil. Experiment was carried out in laboratory conditions on loamy sand with organic carbon content of 8.7 g·kgˉ¹. Different combinations of selenic (IV) acid or selenic (VI) acid (the Se amount was 0.05 mmol·kgˉ¹) and diesel oil or spent engine oil at dosage of 2, 10 i 50 g·kgˉ¹ were added to soil samples. All samples were adjusted to 60% of the maximum water holding capacity and stored in glass twist containers at a temperature of 20°C. Activity of peroxidases was determined spectrophotometrically on days 1, 7, 14, 28, 56 and 112. Soil contamination with diesel oil and spent engine oil increased the activity of peroxidases. Application of selenium to soil uncontaminated with petroleum hydrocarbons caused significant changes of peroxidase activities in the initial period of experiment. Only in soil containing diesel oil at the dosage of 2 g·kgˉ¹ significant increase in activity of peroxidase was observed after treatment with selenium VI.

Źródło:

Acta Agrophysica; 2016, 23, 3
1234-4125

Pojawia się w:

Acta Agrophysica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 38.

Tytuł:

Changes in the ascorbate-glutathione system during storage of recalcitrant seeds of Acer saccharinum L.

Autorzy:

Ratajczak, E
Pukacka, S.

Powiązania:

https://bibliotekanauki.pl/articles/57429.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

ascorbate-glutathione system
ascorbate peroxidase
storage
seed
Acer saccharinum
monodehydroascorbate reductase

Opis:

Two seed lots of Acer saccharinum (recalcitrant), with an initial moisture content of 50% and 55%, were stored at +3oC for 6 months. After this time, their viability (measured as germinability) reached 100% and 30%, respectively. In embryo axes and cotyledons extracted from seeds, two major low molecular antioxidants were assayed: ascorbate (ASA and DHA) and glutathione (GSH and GSSG); and activities of enzymes of the ascorbate-glutathione cycle were measured: ascorbate peroxidase (APO) (E.C. 1.11.1.11), monodehydroascorbate reductase (MR) (E.C. 1.6.5.4), dehydroascorbate reductase (DHAR) (E.C. 1.8.5.1), and glutathione reductase (GR) (E.C. 1.6.4.2.). GSH and GSSG contents of embryo axes of stored seeds decreased, as compared to the control (fresh, non-stored seeds), but a larger decrease was observed in seeds with 30% viability. In cotyledons, a particularly high increase in the GSH content in relation to the control was observed in seeds with 100% viability, while the GSSG content was significantly lower in both stored seed lots than in the control. The ASA level was twice as high in seeds with 30% viability as in the control, both in embryo axes and in cotyledons. The activity of enzymes of the ascorbate-glutathione cycle was higher in embryo axes than in cotyledons. In embryo axes of seeds with 100% viability, enzyme activities were slightly lower than in the control, while in those of seeds with 30% viability, their activities were higher than in the control. The observed changes in activities of enzymes of the ascorbate-glutathione cycle and in ascorbate and glutathione levels suggest that the stored seeds of A. saccharinum have an active antioxidant system, which plays an important role in maintaining their viability during storage.

Źródło:

Acta Societatis Botanicorum Poloniae; 2006, 75, 1; 23-27
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Changes in GSH-antioxidant system induced by daunorubicin in human normal and diabetic fibroblasts.

Autorzy:

Zatorska, Agnieszka
Maszewski, Janusz
Jóźwiak, Zofia

Powiązania:

https://bibliotekanauki.pl/articles/1043460.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

glutathione S-transferase
glutathione reductase
glutathione peroxidase
daunorubicin
apoptosis
glutathione
oxidative stress

Opis:

We investigated the effect of daunorubicin on glutathione content and activity of GSH-related enzymes in cultured normal and diabetic human fibroblasts. Cells were incubated with 4 μM daunorubicin (DNR) for 2 h followed by culture in drug-free medium for up to 72 h. Treatment of diabetic cells with the drug caused a time-dependent depletion of intracellular GSH and a decrease of the GSH to total glutathione ratio. GSH depletion was accompanied by apoptotic changes in morphology of the nucleus. Analysis of GSH-related enzymes showed a significant increase of the activities of Se-dependent and Se-independent peroxidases and glutathione S-transferase. In contrast, glutathione reductase activity was reduced by 50%. Significant differences between normal and diabetic cells exposed to DNR were observed in the level of GST and Se-dependent glutathione peroxidase activities. These findings indicated that daunorubicin efficiently affects the GSH antioxidant defense system both in normal and diabetic fibroblasts leading to disturbances in glutathione content as well as in the activity of GSH-related enzymes.

Źródło:

Acta Biochimica Polonica; 2003, 50, 3; 825-835
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 40.

Tytuł:

First report on implementation of response surface methodology for the biodegradation of textile industrial effluents by Coniophora puteana IEBL-1

Autorzy:

Mahmood, Raja T.
Asad, Muhammad J.
Asgher, Muhammad
Zainab, Tayyaba
Zafar, Mudassar
Hadri, Saqib H.
Ali, Imran
Zaman, Nasib
Wattoo, Feroza H.

Powiązania:

https://bibliotekanauki.pl/articles/204720.pdf

Data publikacji:

2019

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

Coniophora puteana IEBL-1
response surface methodology
biodegradation
laccase
lignin peroxidase
diphenylamine

Opis:

The current study was aimed to evaluate the industrial effluents biodegradation potential of an indigenous microorganism which reduced water pollution caused by these effluents. In the present study biodegradation of three textile industrial effluents was performed with locally isolated brown rot fungi named Coniophora puteana IEBL-1. Response Surface Methodology (RSM) was employed under Box Bhenken Design (BBD) for the optimization of physical and nutritional parameters for maximum biodegradation. Quality of treated effluents was checked by study of BOD, COD and analysis through HPLC. Three ligninolytic enzymes named lignin peroxidase, manganese peroxidase and laccase were also studied during the biodegradation process. The results showed that there was more than 85% biodegradation achieved for all three effluents with decrease in Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) below the recommended values for industrial effluent i.e. 80 mg/L for BOD and 220 mg/L for COD after optimization of nutritional parameters in the second stage. Analysis of samples through HPLC revealed the formation of less toxic diphenylamine, 3-methyldiphenylamine and N-methylaniline after treatment. The ligninolytic enzymes assays confirmed the role of lignin peroxidase (LiP), manganese peroxidase (MnP) and laccase in biodegradation process. Lignin peroxidase with higher activity has more contribution in biodegradation of effluents under study. It can be concluded through the results that Coniophora buteana IEBL-1 is a potential fungus for the treatment of industrial effluents.

Źródło:

Archives of Environmental Protection; 2019, 45, 4; 48-59
2083-4772
2083-4810

Pojawia się w:

Archives of Environmental Protection

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

Ligninolityczne właściwości izolatów Heterobasidion parviporum w hodowli na drewnie świerka
Ligninolytic activity of Heterobasidion parviporum isolates in cultivation on Norway spruce wood

Autorzy:

Żółciak, A.
Bohacz, J.

Powiązania:

https://bibliotekanauki.pl/articles/989467.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
fitopatologia lesna
grzyby
Heterobasidion parviporum
izolaty grzybowe
aktywnosc lignolityczna
enzymy lignolityczne
lakaza
peroksydaza manganozalezna
peroksydaza ligninowa
peroksydaza "versatile"
rozklad drewna
drewno bielu
drewno twardzieli
drewno swierkowe
biodegradacja
laccase
manganese peroxidase
lignin peroxidase
versatile peroxidase
hydroxy−
methoxyphenols
sapwood
heartwood
norway spruce wood

Opis:

The aim of this preliminary study was to assess the activity of laccase, diverse peroxidases as well as the level of micromolecular compounds in Heterobasidion parviporum isolates grown on pieces of Norway spruce wood (sapwood and heartwood) during 50 days of incubation under the laboratory conditions. H. parviporum isolates secreted extracellular enzymes: laccase, manganese peroxidase (MnP), lignin peroxidase (LiP) and versatile peroxidase (VP). Hydroxy− and methoxyphenols were also released during this process. The above−mentioned enzymes showed low activity in mycelium grown on both sapwood and heartwood. The activity of laccase ranged from 0 to 0.513 mU/mg protein on sapwood, and from 0 to 0.106 mU/mg protein – on heartwood. MnP activity of H. parviporum isolates ranged from 0.024 to 0.667 mU/mg protein on sapwood, and from 0.038 to 1.585 mU/mg protein – on heartwood. LiP activity was small and ranged from 0 to 1.281 mU/mg protein on sapwood, and from 0.013 to 0.166 mU/mg protein – on heartwood. Activity of VP oxidizing manganese ions was low. It ranged from 0 to 3.063 mU/mg protein on sapwood, and from 0.059 to 3.054 mU/mg protein – on heartwood. The activity of VP oxidizing guaiacol ranged from 0.006 to 1.490 mU/mg protein on sapwood and from 0.038 to 1.147 mU/mg protein – on heartwood. The hydroxyphenols produced by H. parviporum isolates ranged from 15.037 to 110.149 mg of protocatechuic acid/ml on sapwood, and from 11.236 to 27.220 mg of protocatechuic acid/ml – on heartwood. Methoxyphenols produced by H. parviporum isolates ranged from 3.393 to 24.253 mg of vanillic acid/ml on sapwood, and from 4.955 to 12.005 mg of vanillic acid/ml – on heartwood.

Źródło:

Sylwan; 2016, 160, 12; 1027-1035
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Effect of Medicago sativa Mhb1gene expression on defense response of Arabidopsis thaliana plants

Autorzy:

Maassen, Anna
Hennig, Jacek

Powiązania:

https://bibliotekanauki.pl/articles/1039900.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

Arabidopsis thaliana
pathogen infection
nitrotyrosine
nitric oxide
peroxidase activity
non-symbiotic hemoglobin

Opis:

Besides the previously described nitric oxide-detoxification activity we identified new features of class-1 non-symbiotic hemoglobin from Medicago sativa (Mhb1). Under in vitro conditions, using peroxidase in-gel activity assay, the Mhb1 protein was shown to possess also peroxidase-like activity. Due to this activity, in the presence of nitrite and hydrogen peroxide, the protein can mediate autonitration and nitration of other proteins at tyrosine residues, as revealed by tandem mass spectrometry and immune assay approaches. Mhb1 through its multifunctional activities can affect different components of signal transduction cascades operating during plant response to infections. This influence is manifested by Mhb1-mediated selective up-regulation of expression of certain pathogen inducible genes in Pseudomonas syringae infected Arabidopsis thaliana plants which overproduce Mhb1, as revealed by reverse transcription-quantitative real-time PCR analysis. Changes in expression level of these genes can influence such processes as synthesis of secondary metabolites, protein degradation and biosynthesis of ethylene. They can also result in alteration of pathogen-induced defense response of Mhb1 transgenic plants.

Źródło:

Acta Biochimica Polonica; 2011, 58, 3; 427-432
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 43.

Tytuł:

Removal of a textile dye (RBBR) from the water environment by fungi isolated from lignocellulosic composts

Autorzy:

Bohacz, Justyna

Powiązania:

https://bibliotekanauki.pl/articles/204714.pdf

Data publikacji:

2020

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

water environment
textil dye
Trichoderma sp
peroxidase activity
Remazol Brilliant Blue R.

Opis:

A representative group of hydrophilic fungi from the genus Trichoderma isolated from lignocellulose composts with varying degrees of maturity was analyzed for their ability to biodegrade a harmful anthraquinone dye, i.e. Remazol Brilliant Blue R (RBBR). In RBBR-containing post-culture liquids, there were determined the degree of RBBR decolorization, horseradish peroxidase-like, superoxide dismutase-like, and xylanase activities, and the concentrations of low-molecular phenolic compounds. The study results demonstrated that Trichoderma asperellum, T. harzianum, and T. lixii strains isolated from compost containing larger amounts of easily available lignocellulose fractions, i.e. grasses, exhibit higher RBBR decolorization efficiency ranging from 0.3 to 62% than T. citrinoviride strains isolated from compost II, which contained greater quantities of hardly degradable lignocellulose. The decolorization of remazol blue R by the investigated Trichoderma strains intensified significantly with the increase in peroxidase activity and it was correlated with a decline in the content of low-molecular phenolic compounds. The dynamics of changes in the horseradish peroxidase-like, superoxide dismutase, and xylanase activities in the aqueous post-culture liquids of the investigated fungal strains depended largely on the duration of the culture. Given their ability to adapt to water environments, e.g. wastewater, and to decolorize and detoxify the RBBR anthraquinone dye, Trichoderma fungi can be used for bioremediation of such environments.

Źródło:

Archives of Environmental Protection; 2020, 46, 2; 12-20
2083-4772
2083-4810

Pojawia się w:

Archives of Environmental Protection

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Markers of physiological stress in common pea (Pisum sativum) in response to soil contamination with tetracycline

Autorzy:

Ziolkowska, A.
Dobiesz, M.
Piotrowicz-Cieslak, A.I.
Adomas, B.

Powiązania:

https://bibliotekanauki.pl/articles/80121.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
physiological stress
common pea
Pisum sativum
soil contamination
tetracycline
peroxidase activity
carbohydrate

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Application of TSA technique in localization of snRNP-rich cytoplasmic bodies

Autorzy:

Hyjek, M.
Wojciechowska, N.
Kolowerzo, A.
Smolinski, D.J.

Powiązania:

https://bibliotekanauki.pl/articles/80402.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
RNA maturation
eukaryotic cell
biogenesis
TSA technique
microsporocyte
catalytic activity
horseradish peroxidase

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

Evaluating the Total Phenolic, Protein Contents, Antioxidant and Pharmacological Effects of Cynodon dactylon Extracts Against Escherichia coli and Staphylococcus aureus

Autorzy:

Ibrahim, Muhammad
Riaz, Moazama
Ali, Akbar
Shaheen, Musarat
ur Rahman, Shafiq
Aziz, Riffat
Alamri, Abdulhakeem S.
Alhomrani, Majid
Dablool, Anas S.
Alghamdi, Saad
Sameeh, Manal Y.
Tashkandi, Manal A.

Powiązania:

https://bibliotekanauki.pl/articles/27315658.pdf

Data publikacji:

2023

Wydawca:

Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie

Tematy:

Cynodon dactylon
Anti-microbial
Flavonoids
Total Soluble Proteins
Peroxidase
Antioxidant
Super oxide Dismutase

Opis:

The study was aimed to characterize the antioxidant and anti-microbial activities of Cynodon dactylon with special reference on its precise biochemical analysis. Physiological analysis that total carotenoids content (0.3884 ± 0.0172 mg/g), total chlorophyll content (6.1460 ± 0.2915 mg/g), total phenolic contents (13.4703 ± 0.1494 mg/g), chlorophyll a (3.7708 ± 0.1528 mg/g, catalase (CAT) contents (40.2844 ± 0.1515 units/ mg), total anthocyanin contents (5.0166 ± 0.2966 g–1 FW) total soluble proteins (2.9916 ± 0.1734 mg/g) and total flavonoids content (TFC) (4.7863 ± 0.0442 μg/g) was found higher in the leaves of the Cynodon dactylon whereas, chlorophyll b (2.4881 ± 0.1326 mg/g) was found higher in the stem of Cynodon dactylon, while, peroxidase (POD) contents (81.8763 ± 4.6609 units/mg) and superoxidase dismutase (SOD) activity (80.4346 ± 5.9367 units/mg) was investigated higher in roots of Cynodon dactylon. The anti-microbial activity of Cynodon dactylon extracts was performed using a good diffusion technique against two microbial strains. Among all the plant extracts, the methanolic extracts showed a maximum inhibition zone (26.87 mm) against anti-bacterial strain Escherichia coli whereas n-hexane extract showed a maximum inhibition zone (17.88 mm) against anti-fungal strain Candida albicans. This study reported the antimicrobial activity of Cynodon dactylon against some common pathogens such as Staphylococcus aureus, Escherichia coli, and Candida albicans, which are highly associated with nosocomial infection. From the given results it is concluded that Cynodon dactylon could be exploited in pharmacology due to its antioxidant and anti-microbial properties.

Źródło:

Polish Journal of Chemical Technology; 2023, 25, 3; 110--119
1509-8117
1899-4741

Pojawia się w:

Polish Journal of Chemical Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 47.

Tytuł:

Lichen peroxidases have both pro- and antioxidant roles

Autorzy:

Beckett, R.
Minibayeva, F.
Liers, C.

Powiązania:

https://bibliotekanauki.pl/articles/81039.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
lichen
peroxidase activity
prooxidative property
antioxidative property
hydrogen peroxide
reactive oxygen species

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 2
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Glutathione and GSH-dependent enzymes in patients with liver cirrhosis and hepatocellular carcinoma

Autorzy:

Czeczot, Hanna
Ścibior, Dorota
Skrzycki, Michał
Podsiad, Małgorzata

Powiązania:

https://bibliotekanauki.pl/articles/1041298.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

malondialdehyde
glutathione S-transferase
glutathione reductase
liver cirrhosis
glutathione peroxidase
glutathione
hepatocellular carcinoma

Opis:

We investigated glutathione level, activities of selenium independent GSH peroxidase, selenium dependent GSH peroxidase, GSH S-transferase, GSH reductase and the rate of lipid peroxidation expressed as the level of malondialdehyde in liver tissues obtained from patients diagnosed with cirrhosis or hepatocellular carcinoma. GSH level was found to be lower in malignant tissues compared to adjacent normal tissues and it was higher in cancer than in cirrhotic tissue. Non-Se-GSH-Px activity was lower in cancer tissue compared with adjacent normal liver or cirrhotic tissue, while Se-GSH-Px activity in cancer was found to be similar to its activity in cirrhotic tissue and lower compared to control tissue. An increase in GST activity was observed in cirrhotic tissue compared with cancer tissue, whereas the GST activity in cancer was lower than in adjacent normal tissue. The activity of GSH-R was similar in cirrhotic and cancer tissues, but higher in cancer tissue compared to control liver tissue. An increased level of MDA was found in cancer tissue in comparison with control tissue, besides its level was higher in cancer tissue than in cirrhotic tissue. Our results show that the antioxidant system of cirrhosis and hepatocellular carcinoma is severely impaired. This is associated with changes of glutathione level and activities of GSH-dependent enzymes in liver tissue. GSH and enzymes cooperating with it are important factors in the process of liver diseases development.

Źródło:

Acta Biochimica Polonica; 2006, 53, 1; 237-242
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Effect of temperature on guaiacol peroxidase of Pyrus communis

Autorzy:

Saeidian, S.
Ghasemifar, E.

Powiązania:

https://bibliotekanauki.pl/articles/10793.pdf

Data publikacji:

2013

Wydawca:

Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN

Tematy:

temperature effect
guaiacol
Peroxidase
Pyrus communis
enzyme
plant growth
plant development
cell wall

Opis:

Peroxidase (EC 1.11.1.7; donor: hydrogen-peroxide oxidoreductase, POD) is one of the key enzymes controlling plant growth, differentiation and development. The enzyme participates in construction, rigidification and eventual lignification of cell walls, biosynthesis of ethylene from 1-aminocyclopropane-1-carboxylic acid and H2O2, regulation of auxin level through auxin catabolism, protection of tissue from damage and infection by pathogenic microorganisms, the oxidation of indoleacetic acid. For peroxidase activity in wild pears extract one pH optimum was observed at 6.5 that probably belong to atleast one isoenzyme. Activity of peroxidase in presence of guaiacol and H2O2 was optimum after incubation at 40 °C. Maximum activity of peroxidase is 300 % .Activity increased to 240 %, 300 %, 70 % and 10 % after 60 minute incubation at 30, 40, 45 and 60 °C for peroxidase. Incubation at high temperature (70 °C) was accompanied with decrease of activity to 10 % peroxidase activity.

Źródło:

International Letters of Natural Sciences; 2013, 05
2300-9675

Pojawia się w:

International Letters of Natural Sciences

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Disintegration of sludge by a two-stage treatment with hydrogen peroxide and solid-state fermentation by Aspergillus oryzae CGMCC5992

Autorzy:

Guan, G.
Zhicai, Z.
Jun, J.
Fan, F.
Keping, C.

Powiązania:

https://bibliotekanauki.pl/articles/208076.pdf

Data publikacji:

2016

Wydawca:

Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej

Tematy:

Aspergillus oryzae CGMCC5992
fermentation
lignin peroxidase
manganese peroxidase
solid state fermentation
wastewater sludge
wastewater treatment plants
lignina peroksydazy
mangan peroksydazy
podłoże organiczne
fermentacja w stanie stałym
osady ściekowe
oczyszczalnie ścieków

Opis:

A novel and safe method has been reported for wastewater sludge treatment, the first step of which is H₂O₂ pretreatment at 150 cm³kg for 80 min. In this step, the majority of organic substrate was degraded, and the shear stress diminished significantly. In the second step, Aspergillus oryzae further decomposed the organic substrate of sludge for 8 days, and the activities of manganese peroxidase and lignin peroxidase kept increasing. By the methods, the residual chemical oxygen demand (COD) in the sludge was much lower than that in the sludge treated with high doses of H₂O₂. These results indicate that the present study provides a feasible method to safely dispose sludge from the wastewater treatment plant.

Źródło:

Environment Protection Engineering; 2016, 42, 3; 43-54
0324-8828

Pojawia się w:

Environment Protection Engineering

Dostawca treści:

Biblioteka Nauki

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