Effects of phytoestrogens on testosterone secretion by Leydig cells from Biłgoraj ganders (Anser anser)

British Poultry Science
Dr M OpalkaLuiza Dusza

Abstract

The aim of this study was to examine ganders at different stages of the reproductive season and the effect of: (1) diets with high phytoestrogen content and (2) in vitro phytoestrogen treatment on testosterone secretion by isolated Leydig cells. Thirty-six male Biłgoraj geese were fed control diets with low phytoestrogen content (containing grass meal) and diets with high phytoestrogens (containing alfalfa meal and soy). Testes were obtained from both groups of ganders at three different times of the breeding season: peak of reproductive activity (March), second half of reproductive activity (May) and beginning of photorefractoriness (July). Isolated Leydig cells were incubated with LH as well as genistein, daidzein, equol and coumestrol and the concentration of testosterone in the medium was determined by radioimmunoassay. The mean weight of testes from ganders in May and July decreased relative to their weights in March, but no significant differences among experimental groups were noted. No differences were observed in basal and LH-stimulated testosterone secretion by Leydig cells of ganders fed the control diets and the diets with higher phytoestrogen content. In July, LH did not stimulate testosterone secretion in either g...Continue Reading

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Citations

Apr 16, 2013·Biological Trace Element Research·Anna Jerysz, Ewa Lukaszewicz
Dec 17, 2009·Acta Veterinaria Scandinavica·David GunnarssonAndrzej Madej
Aug 7, 2007·General and Comparative Endocrinology·Cynthia CorbittGeorge E Bentley
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Nov 28, 2009·Toxicology and Industrial Health·Jian Ying YangXiao Lan Qiao
Jul 31, 2013·Visual Neuroscience·David M Hunt, Leo Peichl
Jul 10, 2013·Visual Neuroscience·Hannah R JooShih-Kuo Chen
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May 1, 2012·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Marek OpalkaLuiza Dusza
Jul 6, 2019·Critical Reviews in Food Science and Nutrition·Chengshen HuWing-Fu Lai
Jan 12, 2011·Expert Opinion on Drug Safety·Victoria LinaresJosé L Domingo

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