Open AccessBasal and LH-RH-stimulated gonadotropin secretion in oophorectomized female rats with streptozotocin-induced diabetes
Author(s) -
Babichev Vn,
Adamskaia Ei,
Peryshkova Ta
Publication year - 1994
Publication title -
problemy èndokrinologii
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.124
H-Index - 5
eISSN - 2308-1430
pISSN - 0375-9660
DOI - 10.14341/probl11331
Subject(s) - medicine , endocrinology , streptozotocin , basal (medicine) , gonadotropin , diabetes mellitus , castration , hormone , insulin , secretion , chemistry
In vitro insulin effect on basal and LH-RH- stimulated gonadotropin secretion in oophorectomized female rats with streptozotocin diabetes administered estradiol as replacing hormone therapy was studied. The results were compared to those obtained after a similar incubation of adenohypophyses of oophorectomized rats and of oophorectomized rats administered estradiol. Estradiol was found to change the type of LH-RH-stimulated gonadotropin secretion in oophorectomized animals. Basal, but not LH-RH-stimulated gonadotropin secretion, was increased in rats with experimental diabetes as against other groups. Insulin inhibited basal and increased LH-RH-stimulated gonadotropin secretion in oophorectomized rat’s with streptozotocin diabetes administered estradiol. A conclusion is made about impaired sensitivity of hypophyseal gonadotrophs to LH-RH in streptozotocin diabetes and about a possible contribution of insulin to regulation of body reproductive system at the level of hypophysis.