The serum level of immunoreactive LH in intact and spayed androgen-sterilized rats.
نویسنده
چکیده
The serum levels of lh were measured by radioimmunoassay in androgen-sterilized and normal cyclic rats, both in the presence and absence of ovaries. The serum of persistent-oestrous rats contained significantly more lh than that of normal rats on the day of oestrus, the raised level being comparable to that found in the adult male rat. The pituitary gland of the persistent-oestrus rat resembled that of the normal rat in its response to ovariectomy by increased secretion of lh.
منابع مشابه
No Significant Difference Between Intact and Testosterone Depleted or Administrated Male Rats in Spatial Learning and Memory
Androgens have been shown to affect cognitive aspects of spatial memory. Testosterone which is the most important androgen, plays a role in the organization of behavior during development. Also, it has been shown that androgens cause sex related differences in learning and memory especially during neonatal period. In the current study, we assessed the effects of castration and testosterone ena...
متن کاملRelationship between neonatal testosterone and 5-hydroxytryptamine (5 HT) in controlling the pattern of LH release in adult rats
Relationship between neonatal testosterone and 5-hydroxytryptamine (5-HT) in controlling the pattern of LH release in adult rats was investigated in this study. Hypothalamic 5-HT concentrations are transiently lower in male as compared to female Wistar rats in the second week post-partum (pp). It has also been shown that pharmacologically potentiating 5-HT activity during this period feminizes ...
متن کاملEffects of multiple LH injections on the secretion of estrogens from polycystic ovaries of androgen-sterilized rats.
Differences in the secretion of estrogens by follicular polycystic ovaries of androgen-sterilized rats and by normal follicular ovaries of early proestrous rats were compared. Some rats were injected i.v. with LH 30 min before bleeding. This injection of LH did not influence the secretion of estrogens by normal ovaries, but greatly increased that by polycystic ovaries, suggesting that there was...
متن کاملNo Significant Difference Between Intact and Testosterone Depleted or Administrated Male Rats in Spatial Learning and Memory
Androgens have been shown to affect cognitive aspects of spatial memory. Testosterone which is the most important androgen, plays a role in the organization of behavior during development. Also, it has been shown that androgens cause sex related differences in learning and memory especially during neonatal period. In the current study, we assessed the effects of castration and testosterone ena...
متن کاملRelationship between neonatal testosterone and 5-hydroxytryptamine (5 HT) in controlling the pattern of LH release in adult rats
Relationship between neonatal testosterone and 5-hydroxytryptamine (5-HT) in controlling the pattern of LH release in adult rats was investigated in this study. Hypothalamic 5-HT concentrations are transiently lower in male as compared to female Wistar rats in the second week post-partum (pp). It has also been shown that pharmacologically potentiating 5-HT activity during this period feminizes ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Journal of reproduction and fertility
دوره 23 2 شماره
صفحات -
تاریخ انتشار 1970