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Wyświetlanie 1-5 z 5
Tytuł:
The effect of indole-3-carbinol on the expression of CYP1A1, CYP1B1 and AhR genes and proliferation of MCF-7 cells
Autorzy:
Ociepa-Zawal, Marta
Rubiś, Błażej
Łaciński, Mariusz
Trzeciak, Wiesław
Powiązania:
https://bibliotekanauki.pl/articles/1041121.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
p21
AhR
CYP
cell proliferation
estrone hydroxylation
xenoestrogens
Opis:
The influence of an antiestrogen, indole-3-carbinol (I3C) on the expression of CYP1A1, CYP1B1 and AhR genes was investigated in an attempt to establish whether I3C could increase the expression of genes involved in estrone metabolism. Another purpose was to examine the proliferation of an estrogen-dependent breast cancer cell (MCF-7 line) under the influence of I3C and both I3C and DDT. In MCF-7 cells incubated with I3C or I3C and DDT combined, quantitative RT-PCR analysis revealed a significant increase in the level of CYP1A1, AhR, and CYP1B1 transcripts. The proliferation rate of MCF-7 cells was increased by treatment with DDT or estradiol (E2), whereas I3C did not affect the proliferation of MCF-7 cells but greatly reduced the stimulatory effect of DDT, and abolished the effect of E2. The level of p21 transcript, encoding p21 protein involved in the cell cycle, was increased several-fold by I3C comparing to its level in cells incubated with estradiol or DDT. The results suggest that the proliferation of MCF-7 cells is accompanied not only by expression of genes encoding cytochromes involved in estrogen metabolism, but also by changes in the expression of other genes including that encoding p21 protein involved in the cell cycle.
Źródło:
Acta Biochimica Polonica; 2007, 54, 1; 113-117
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary evaluation of ER- and AhR-mediated gene expression patterns in rainbow trout (Oncorhynchus mykiss) liver after short-term exposure to zearalenone in binary mixtures
Autorzy:
Woźny, M.
Brzuzan, P.
Wolińska, L.
Góra, M.
Łuczyński, M. K.
Powiązania:
https://bibliotekanauki.pl/articles/363144.pdf
Data publikacji:
2010
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
receptor AhR
benzo(a)piren
ścieżka sygnałowa
17beta-estradiol
receptor estrogenowy
zearalenone
aryl hydrocarbon receptor
benzo(a)pyrene
crosstalk
estrogen receptor
Opis:
While estrogenic properties of mycotoxin zearalenone (ZEA) has been an extensively studied issue, little is known about molecular background of its biological responses that cannot be simply explained by the estrogenic potential. The present study describes effects of ZEA (10mg*kg-1 body weight) in binary mixtures either with benzo[a]pyrene (B[a]P), or with 17β-estradiol (E2) on ER- and AhR-dependent gene expression in juvenile rainbow trout liver, evaluated using Real-Time qPCR. The study revealed dual nature of ZEA, as the treatment with this compound alone increased mRNA levels of both ER- and AhR-mediated gene expression. However, our results did not show any synergistic or additive effect of ZEA in binary mixures with E2 or B[a]P on studied gene expression levels. Whether the intriguing potential of ZEA to elicit distinct signals was a result of binding affinity to AhR or/and ER and AhR mutual receptor interactions, should be investigated in further experiments.
Źródło:
Environmental Biotechnology; 2010, 6, 1; 16-23
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Aryl hydrocarbon receptor (AhR)-linked inhibition of luteal cell progesterone secretion in 2,3,7,8-tetrachlorodibenzo-p-dioxin treated cells
Autorzy:
Gregoraszczuk, E.L.
Zabielny, E.
Ochwat, D.
Powiązania:
https://bibliotekanauki.pl/articles/70446.pdf
Data publikacji:
2001
Wydawca:
Polskie Towarzystwo Fizjologiczne
Tematy:
aryl hydrocarbon receptor
2,3,7,8-tetrachlorodibenzo-p-dioxin
luteal cell
progesterone secretion
steroidogenesis
Źródło:
Journal of Physiology and Pharmacology; 2001, 52, 2
0867-5910
Pojawia się w:
Journal of Physiology and Pharmacology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Failure control of Plutella xylostella (Lepidoptera: Plutellidae) and selectivity of their natural enemies to different insecticides
Autorzy:
Bacci, L.
Rosado, J.F.
Picanco, M.C.
Gonring, A.H.R.
da Silva Galdino, T.V.
Martins, J.C.
Powiązania:
https://bibliotekanauki.pl/articles/66522.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
biological control
Plutella xylostella
Lepidoptera
Plutellidae
selectivity
plant pest
natural enemy
insecticide
Brassica
crop
cabbage moth
Opis:
Control failure of pests and selectivity of insecticides to beneficial arthropods are key data for the implementation of Integrated Pest Management (IPM) programs. Therefore, the aim of this study was to assess the control failure likelihood of Plutella xylostella and the physiological selectivity active ingredients to parasitoid Oomyzus sokolowskii (Hymenoptera: Eulophidae) and to predators Polybia scutellaris (Hymenoptera: Vespidae) and Lasiochilus sp. (Hemiptera: Anthocoridae). In bioassays, P. xylostella larvae and O. sokolowskii, P. scutellaris and Lasiochilus sp. adults were used. Concentration-mortality curves of six insecticides for P. xylostella were established. These curves were used to estimate the mortality of P. xylostella at the recommended concentration, in order to check a control failure of insecticides to this pest. Furthermore, the lethal concentration for 90% of populations (LC90) and the half of LC90 were used in bioassays with the natural enemies to determine the selectivity of these insects to insecticides. All tested insecticides showed control failure to P. xylostella, indicated by high LC90 and low estimated mortalities (less than 80%). The cartap insecticide was selective in half of LC90 to Lasiochilus sp. and moderately selective in LC90 and the half of LC90, to Lasiochilus sp. and P. scutellaris, respectively. Deltamethrin was moderately selective in the half of LC90 to predator Lasiochilus sp. Cartap, carbaryl, and deltamethrin reduced the mortality of Lasiochilus sp. in the half LC90. The results also showed that the insecticides methamidophos, carbaryl, parathion methyl and permethrin were not selective to any of the tested natural enemies. The role of insecticides in IPM systems of Brassica crops is discussed based on their control failures to P. xylostella and selectivity to their natural enemies.
Źródło:
Journal of Plant Protection Research; 2018, 58, 2
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Limfocyty Th22, Th17.1, Tc17, Tfh i NKTfh w patogenezie stwardnienia rozsianego
Th22, Th17.1, Tc17, Tfh and NKTfh lymphocytes in pathogenesis of multiple sclerosis
Autorzy:
Zarobkiewicz, Michał K.
Bojarska-Junak, Agnieszka
Kowalska, Wioleta
Roliński, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1035412.pdf
Data publikacji:
2019
Wydawca:
Śląski Uniwersytet Medyczny w Katowicach
Tematy:
stwardnienie rozsiane
ms
sm
nktfh
tfh
tc17
th17.1
ahr
c-maf
th22
multiple sclerosis
Opis:
Multiple sclerosis (MS) is the most common inflammatory-demyelinating disease, its morbidity varies between 2 per 100 000 inhabitants in sub-Saharan Africa to 100 per 100 000 inhabitants in Europe and North America. Despite the unquestionable progress in medicine, MS is still incurable and all that can be done for a patient is to struggle to slow down the inevitable progress of the disease, which eventually will cause disability. Recognizing the detailed immunopathogenesis of MS is probably the only chance for fully effective treatment. Most of the immunological studies of the previous decades focused on the classic sub-populations of T lymphocytes. This review is focused, however, on novel sub-populations – Th22, Th17.1, Tc17, Tfh and NKTfh lymphocytes in the pathogenesis of MS.
Stwardnienie rozsiane (multiple sclerosis – MS) jest najczęstszą chorobą zapalno-demielinizacyjną. Chorobowość wynosi od około 2/100 000 w okolicach równika do około 100/100 000 w Europie i Ameryce Północnej. Pomimo znacznego postępu medycyny, jaki dokonał się w ostatnich dziesięcioleciach, schorzenie to cały czas pozostaje nieuleczalne. Jedyną możliwością jest walka o spowolnienie nieuchronnego postępu choroby, który w końcu doprowadzi do niepełnosprawności pacjenta. Z tego względu ważne jest dokładne poznanie immunopatogenezy MS. Prowadzone dotychczas badania skupiały się na klasycznych subpopulacjach komórek T. W niniejszym artykule przyjrzymy się stanowi badań i dostępnej wiedzy na temat udziału „nowych” subpopulacji komórek T, tj. limfocytów Th22, Th17.1, Tc17, Tfh, NKTfh, w patogenezie MS.
Źródło:
Annales Academiae Medicae Silesiensis; 2019, 73; 19-24
1734-025X
Pojawia się w:
Annales Academiae Medicae Silesiensis
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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