Wyniki wyszukiwania

1

Impact of cholesterol, vitamin E supplementation and dietary fatty acids on testis function in high-fat diet fed rats

100%

Jablonska O., Krawczynska A., Olczak E., Gromadzka-Ostrowska J.

Polish Journal of Food and Nutrition Sciences

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2006

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tom 15/56

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nr Spec.Issue 2

The aim of the study was to determine whether consumption of diets containing different fat (rapeseed oil or lard-rich), supplemented with a high level of cholesterol (3% w/w) and/or vitamin E (500 mg/kg of diet) for 6 weeks influenced 17beta-hydroxysteroid dehydrogenase (17β-HSD) type 3 activity (measured in vitro), testosterone (Tt) content in testes and plasma testosterone (Tp) concentration (measured by ELISA and RIA, respectively) in male rats. 17β-HSD activity was shown to depend on dietary fat type. Supplementation of vitamin E influenced Tt value, whereas none of the investigated dietary factors had effects on Tp. Significant differences between the investigated factors were observed only for groups fed rapeseed oil-rich diets with marked increases of Tt and Tp in rats fed vitamin E-rich diet.

2

Effects of phytoestrogen daidzein and estradiol on steroidogenesis and expression of estrogen receptors in porcine luteinized granulosa cells from large follicles

88%

Nynca A., Jablonska O., Slomczynska M., Petroff B. K., Ciereszko R. E.

Journal of Physiology and Pharmacology

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2009

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tom 60

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nr 2

95-105

The aims of the study were to compare the in vitro effects of daidzein or 17ß-estradiol (E2) on: 1) progesterone (P4) secretion by luteinized granulosa cells harvested from large porcine follicles, as well as 2) estrogen receptor and ß (ER and ERß) mRNA and protein expression in the cells. In addition, the effect of daidzein on E2 secretion and viability of the granulosa cells was examined. We found that basal and gonadotropin-stimulated P4 secretion were inhibited in granulosa cells cultured in the presence of daidzein either for 24 or 48 hours. In contrast to daidzein, E2 reduced P4 secretion only during 24-hour cell cultures increasing it during longer cultures. Daidzein did not affect E2 secretion by granulosa cells. The expression of ER and ERß mRNA, as well as ERß protein, was up-regulated by daidzein but unaffected by E2. To conclude, the soy estrogen daidzein acts directly on the porcine ovary to decrease progesterone production and to increase expression of ERß mRNA and protein. Daidzein actions in porcine luteinized granulosa cells differ from those of estradiol and it may suggest disadvantageous effects of the phytoestrogen on reproductive processes in females.

3

Wpływ spożycia alkoholu na wybrane parametry fizjologiczne zwierząt modelowych

76%

Oczkowski M., Jablonska O., Dyr W., Kostowski W., Ciok M., Gromadzka-Ostrowska J.

Prace i Materiały Zootechniczne

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2008

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tom 66

4

Ploidy level and genome structure of polyploid Cobitis taxa (Pisces, Cobitidae) occurring in Poland. What are the benefits of polyploidy?

64%

Boron A., Grabowska A., Jablonska O., Juchno D., Leska A., Spoz A., Przybyl A., Szabelska A., Przybylski M., Kotusz J.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2016

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tom 58

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nr 1

5

Fine structure of the degenerative cells of tetraploid Cobitis (Pisces, Cobitidae) testes

64%

Juchno D., Pecio A., Boron A., Biegaj M., Leska A., Jablonska O., Cejko B., Kowalski R., Judycka S.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2016

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tom 58

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nr 1

6

Tetraploids of Cobitis occurring naturally may arise from crosses between allotriploid Cobitis females and males of the spined loach Cobitis taenia Linnaeus, 1758 (Pisces, Cobitidae)

64%

Boron A., Juchno D., Jablonska O., Leska A., Kujawa R., Grabowska A., Spoz A., Zabinska M.

Acta Biologica Cracoviensia. Series Botanica. Supplement

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2012

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tom 54

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nr 1

Ograniczanie wyników

Impact of cholesterol, vitamin E supplementation and dietary fatty acids on testis function in high-fat diet fed rats

Effects of phytoestrogen daidzein and estradiol on steroidogenesis and expression of estrogen receptors in porcine luteinized granulosa cells from large follicles

Wpływ spożycia alkoholu na wybrane parametry fizjologiczne zwierząt modelowych

Ploidy level and genome structure of polyploid Cobitis taxa (Pisces, Cobitidae) occurring in Poland. What are the benefits of polyploidy?

Fine structure of the degenerative cells of tetraploid Cobitis (Pisces, Cobitidae) testes

Tetraploids of Cobitis occurring naturally may arise from crosses between allotriploid Cobitis females and males of the spined loach Cobitis taenia Linnaeus, 1758 (Pisces, Cobitidae)