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Wyświetlanie 1-7 z 7
Tytuł:
Efficacy of manuka honey with conventional antifungals on Malassezia pachydermatis
Autorzy:
Váczi, P.
Čonková, E.
Malinovská, Z.
Powiązania:
https://bibliotekanauki.pl/articles/16647585.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:
Malassezia pachydermatis
manuka honey
azole antifungals
synergy
Opis:
Yeast infections such as otitis externa and seborrheic dermatitis in dogs and cats are frequently associated with Malassezia pachydermatis secondary infection. It is part of the normal cutaneous microflora of most warm-blooded vertebrates, however, under certain conditions, it can become a causative agent of infection that needs to be treated pharmacologically. Azole derivatives are the drugs of the first choice. An interesting trend in developing resistance is the use of natural substances, which include manuka honey with confirmed antimicrobial properties. The main intention of this research was to evaluate the mutual effect of manuka honey in combination with four conventional azole antifungals – clotrimazole, fluconazole, itraconazole, and miconazole – on 14 Malassezia pachydermatis isolates obtained from dogs and 1 reference strain. A slightly modified M27–A3 method (CLSI 2008) and the checkerboard test (Nikolić et al. 2017) were used for this purpose. Our results show an additive effect of all 4 antifungals with manuka honey concurrent use. Based on the determined values of fractional inhibitory concentration index (FICI – 0.74±0.03 when manuka honey combined with clotrimazole, 0.96±0.08 with fluconazole, 1.0±0 with miconazole and 1.16±0.26 with itraconazole), it was found in all cases that the effect of substances used is more pronounced in mutual combination than when used separately.
Źródło:
Polish Journal of Veterinary Sciences; 2023, 26, 2; 257-263
1505-1773
Pojawia się w:
Polish Journal of Veterinary Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
New Rapid Analysis of two Classes of Pesticides in Food Wastewater by Quechers-Liquid Chromatography/Mass Spectrometry
Autorzy:
Łozowicka, B.
Kaczyński, P.
Szabuńko, J.
Ignatowicz, K.
Warentowicz, D.
Łozowicki, J.
Powiązania:
https://bibliotekanauki.pl/articles/123585.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
wastewater
azole
neonicotinoids
QuEChERS
LC-MS/MS
Opis:
The rapid analytical method was developed in response to increasing concern over the environmental impact of azoles (sterol biosynthesis inhibitors) and neonicotinoids (nicotinic acetylcholine receptor site). These chemicals are commonly used to protect fruit and vegetables crops against fungi and pests. Seven insecticides and twenty one fungicides commonly occurring in food industrial wastewater have been determined. For this purpose, active substances from two new pesticide classes were extracted and isolated by QuEChERS by addition of acetonitrile, buffering salts and chitin as a clean-up sorbent. The novelty of this procedure was one step sample preparation including extraction and removing of co-extracts in short time. Instrumental analysis was conducted by liquid chromatography coupled with mass spectrometry using multiple reaction monitoring. The limits of detection ranged from 0.002 to 0.005 μg·L-1 with satisfactory accuracy and precision The recoveries for the pesticides ranged from 81–103%, with high repeatability (n = 3, RSD ≤ 9%) and low LOQs (0.01 μg·L-1). Matrix effects calculated were less than 12% for all analyses. The method was applied to routine analysis of food industrial wastewater. Concerning the results, total pesticide levels in most cases were below 1 μg·L -1. The most significant pesticides in terms of concentration and frequency of detection were acetamiprid (0.07 μg· L-1); tebuconazole (1.2 μg· L-1) and thiacloprid (0.04 μg·L-1).
Źródło:
Journal of Ecological Engineering; 2016, 17, 3; 97-105
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Examination of cyp51A and cyp51B expression level of the first Polish azole resistant clinical Aspergillus fumigatus isolate
Autorzy:
Brillowska-Dąbrowska, Anna
Mroczyńska, Martyna
Nawrot, Urszula
Włodarczyk, Katarzyna
Kurzyk, Ewelina
Powiązania:
https://bibliotekanauki.pl/articles/1038929.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Aspergillus fumigatus
azole resistance
cyp51A
cyp51B
Opis:
Aspergillus fumigatus is one of the most prevalent airborne fungal pathogens causing infections worldwide. Most A. fumigatus strains are susceptible to azoles, which are administered as the first line therapeutics. However, during last decade the acquired resistance to triazoles by these species has been described. There is a number of publications concerning the examination of clinical A. fumigatus strains from different countries, however there has been no report from Poland. Here, we describe for the first time, an examination of cyp51A and cyp51B expression level of 11 clinical A. fumigatus strains isolated during 2007-2014 period from the collection of Medical University in Wrocław. Their susceptibility to itraconazole, voriconazole and posaconazole has been examined. The MIC values of triazoles for one of the examined isolates were respectively: > 8 mg/L for itraconazole, 2 mg/L for voriconazole and 0.5 mg/L for posaconazole. The cyp51A gene with its promoter region of all isolates was sequenced. It was found that the resistant isolate harbors the TR34/L98H mutation in the cyp51A gene and when cultured on media supplemented with voriconazole exhibits overexpression of both, cyp51A and cyp51B genes. The level of cyp51A gene expression was about 50 times higher than cyp51B.
Źródło:
Acta Biochimica Polonica; 2015, 62, 4; 837-839
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Nucleotide substitutions in the Candida albicans ERG11 gene of azole-susceptible and azole-resistant clinical isolates
Autorzy:
Strzelczyk, Joanna
Ślemp-Migiel, Anna
Rother, Magdalena
Gołąbek, Karolina
Wiczkowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/1039442.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
Candida albicans
ERG11 gene
sterol 14α demethylase
azole resistance
Opis:
One of the mechanisms of Candida albicans resistance to azole drugs used in antifungal therapy relies on increased expression and presence of point mutations in the ERG11 gene that encodes sterol 14α demethylase (14DM), an enzyme which is the primary target for the azole class of antifungals. The aim of the study was to analyze nucleotide substitutions in the Candida albicans ERG11 gene of azole-susceptible and azole-resistant clinical isolates. The Candida albicans isolates represented a collection of 122 strains selected from 658 strains isolated from different biological materials. Samples were obtained from hospitalized patients. Fluconazole susceptibility was tested in vitro using a microdilution assay. Candida albicans strains used in this study consisted of two groups: 61 of the isolates were susceptible to azoles and the 61 were resistant to azoles. Four overlapping regions of the ERG11 gene of the isolates of Candida albicans strains were amplified and sequenced. The MSSCP (multitemperature single strand conformation polymorphism) method was performed to select Candida albicans samples presenting genetic differences in the ERG11 gene fragments for subsequent sequence analysis. Based on the sequencing results we managed to detect 19 substitutions of nucleotides in the ERG11 gene fragments. Sequencing revealed 4 different alterations: T495A, A530C, G622A and A945C leading to changes in the corresponding amino acid sequence: D116E, K128T, V159I and E266D. The single nucleotide changes in the ERG11 gene did not affect the sensitivity of Candida albicans strains, whereas multiple nucleotide substitutions in the ERG11 gene fragments indicated a possible relation with the increase in resistance to azole drugs.
Źródło:
Acta Biochimica Polonica; 2013, 60, 4; 547-552
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Azoles in the control of Puccinia horiana on chrysanthemum
Autorzy:
Wojdyla, A.T.
Powiązania:
https://bibliotekanauki.pl/articles/65941.pdf
Data publikacji:
2002
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fungicide
white rust
control
Puccinia horiana
plant growth
phytotoxicity
azole
chrysanthemum
Źródło:
Journal of Plant Protection Research; 2002, 42, 3
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Detection of cross-resistance between methotrexate and azoles in Candida albicans and Meyerozyma guilliermondii: an in vitro study
Autorzy:
Karuga, Filip Franciszek
Góralska, Katarzyna
Brzeziańska-Lasota, Ewa
Powiązania:
https://bibliotekanauki.pl/articles/11543398.pdf
Data publikacji:
2021
Wydawca:
Polskie Towarzystwo Botaniczne
Tematy:
cross resistance
detection
methotrexate
azole
Candida albicans
Meyerozyma guilliermondii
drug resistance
fluconazole
Opis:
In recent years, there has been a rapid increase in the incidence of Candida infections. The different species of the genus Candida vary in their virulence abilities and susceptibility to antifungal agents, depending on several external factors. The result of such modifications may be cross-resistance, which is understood as an acquired resistance to a certain antimicrobial agent after exposure to another drug. The aim of this study was to determine the possibility of cross-resistance between fluconazole, voriconazole, itraconazole, and methotrexate in Candida albicans and Meyerozyma guilliermondii (syn. Candida guilliermondii). Fifteen strains of M. guilliermondii and eight strains of C. albicans, including the standard strains, were tested. For all strains, the minimum inhibitory concentrations (MICs) for fluconazole, voriconazole, and itraconazole were determined before and after stimulation with methotrexate. The median MICs in M. guilliermondii before and after stimulation were 9.333 and 64 mg/L (p = 0.005) for fluconazole; 0.917 and 1.667 mg/L (p = 0.001) for itraconazole, respectively. No significant change in MIC was observed for voriconazole. For C. albicans strains, the median MICs before and after stimulation were 0.917 and 64 mg/L (p = 0.012) for fluconazole; 0.344 and 1.135 mg/L (p = 0.018) for voriconazole, respectively. There was no significant change in MIC values for itraconazole. Thus, this study demonstrates the presence of cross-resistance between voriconazole, itraconazole, fluconazole, and methotrexate for the selected strains. Methotrexate exposure induces different responses when certain drugs are used for various species. Therefore, if a patient was previously exposed to methotrexate, there may be a higher risk of treatment failure with fluconazole than with other azoles such as voriconazole for fungemia caused by M. guilliermondii or itraconazole for C. albicans infection.
Źródło:
Acta Mycologica; 2021, 56, 1; 566
0001-625X
2353-074X
Pojawia się w:
Acta Mycologica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Novel Aryl/Alkyl Azole Derivates as an anti-nociceptive and anti-inflammatory drug candidates
Autorzy:
Kaya-Yasar, Yesim
Barut, Elif N.
Engin, Seckin
Dogan, Inci S.
Sezen, Feride S.
Powiązania:
https://bibliotekanauki.pl/articles/895330.pdf
Data publikacji:
2020-04-29
Wydawca:
Polskie Towarzystwo Farmaceutyczne
Tematy:
pain
inflammation
aryl/alkyl azole
COX-LOX
formalin-induced hind paw edema test
hot plate test
Opis:
Novel aryl/alkyl azole derivative compounds C1 and C2 were screened for in vivo anti-nociceptive and anti-inflammatory activities by using the hot plate test and formalin-induced hind paw edema test, respectively. Ability of these compounds to inhibit cyclooxygenase-1/2 (COX-1/2) and 5/15-lipoxygenase (5/15-LOX) were evaluated in vitro by using a colorimetric method. C1 (30 and 50 mg/kg, i.p.) and C2 (3 and 30 mg/kg, i.p.) increased the latency to withdrawal in the hot plate test, indicating an anti-nociceptive activity. C1(30 and 50 mg/kg) and C2 (3,30 and 50 mg) were able to decrease formalin-induced edema, indicating their anti-inflammatory properties. C1 and C2 exhibited inhibitory effects on the activity of COX(1-2) and 15-LOX. However, neither C1 nor C2 showed an inhibitory effect on 5-LOX. This study demonstrates that C1 and C2 have anti-nociceptive and anti-inflammatory activities, that is partially mediated by inhibition of COX and LOX enzymes. Our results suggest that C1 and C2, novel aryl/alkyl azole compounds, could serve as lead compounds to develop novel therapeutic options for the treatment of pain and inflammation.
Źródło:
Acta Poloniae Pharmaceutica - Drug Research; 2020, 77, 2; 289-294
0001-6837
2353-5288
Pojawia się w:
Acta Poloniae Pharmaceutica - Drug Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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