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Ovarian Dynamics and Their Associations with Peripheral Concentrations of Gonadotropins, Ovarian Steroids, and Inhibin During the Estrous Cycle in Goats1
TLDR
Ovarian changes determined by daily transrectal ultrasound and its relationship with FSH, LH, estradiol-17β, progesterone, and inhibin were investigated in six goats and demonstrated that follicular waves occurred in goats and that the predominant follicular wave pattern was four waves with ovulation from wave 4.
Follicular and hormonal dynamics during the estrous cycle in goats.
TLDR
The growth of ovarian follicles in goats exhibits a wave-like pattern, and follicular dominance is less apparent in goats, suggesting that inhibin A may be a key hormone for regulation of the follicular wave through suppression of FSH secretion in goats.
Permethrin may disrupt testosterone biosynthesis via mitochondrial membrane damage of Leydig cells in adult male mouse.
TLDR
The results suggest that the insecticide permethrin may cause mitochondrial membrane impairment in Leydig cells and disrupt testosterone biosynthesis by diminishing the delivery of cholesterol into the mitochondria and decreasing the conversion of cholesterol to pregnenolone in the cells, thus reducing subsequent testosterone production.
Early pregnancy diagnosis by means of ultrasonography as a method of improving reproductive efficiency in goats.
TLDR
In conclusion, progesterone assay at day 21 post-mating (cut-off value, 1 ng/ml) can be used for pregnancy diagnosis in goats and B-mode transrectal ultrasonography was more efficient due to detection of embryo and confirmation of its viability by heartbeats.
Plasma adrenocorticotropin, cortisol and catecholamines response to various exercises.
TLDR
The results suggest that the autonomic nervous system and the pituitary-adrenal axis of the horse are efficiently stimulated by various treadmill exercises, and these hormones may be used in the evaluation of exercise-induced stress.
Adverse effects of environmental toxicants, octylphenol and bisphenol A, on male reproductive functions in pubertal rats
TLDR
It is demonstrated that OP and BPA can reduce sperm counts resulting from lowered plasma testosterone in male rats just after puberty, raising the possibility of a link between these chemicals and prostate diseases because IGF-I has been implicated in the pathogenesis of human prostate cancers.
Maternal exposure to low doses of bisphenol a has no effects on development of female reproductive tract and uterine carcinogenesis in Donryu rats.
TLDR
The results demonstrate that maternal exposure to BPA at levels comparable to human exposure did not have any effects on the female reproductive system of offspring in rats.
Bisphenol a Inhibits Testicular Functions and Increases Luteinizing Hormone Secretion in Adult Male Rats
TLDR
It is suggested that BPA directly inhibits testicular functions and the increased level of plasma LH is probably due to a reduction in the negative feedback regulation by testosterone, which is probably a more sensitive site for BPA action than the hypothalamus–pitultary axis.
Estrogenic and anti-androgenic activity of nitrophenols in diesel exhaust particles (DEP).
TLDR
Anti-androgenicity is found in all four nitrophenols isolated from diesel exhaust particles (DEP) because these compounds are alkylphenolic derivatives that might mimic hormones.
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