Ovarian follicular development and endocrine responses in follicular-fluid-treated and hemi-ovariectomized heifers
نویسندگان
چکیده
منابع مشابه
Relationship between ovarian weight and follicular population in heifers.
The size of the ovary varies substantially among cattle. This variation may influence the potential of the ovary to produce follicles. In the present study, we examined whether a relationship exists between the weight of the ovary and the number of antral follicles >or=1 mm. Paired ovaries were obtained from Holstein x Japanese Black F1 heifers. Follicles were classified into three size categor...
متن کاملIsolation of common carp ovarian follicular cells and evaluation of their endocrine activity in primary cell culture
To study viability and activity of isolated common carp, Cyprinus carpio, ovarian follicular cells (granulosa and theca cells), 17- α -Hydroxy progesterone (17 α -OHP) and 17 β -Estradiol (E2) levels were estimated in the culture media of cultivated carp ovarian follicular cells, using radioimmunoassay (RIA). Oocytes were isolated from the ovaries of female carp. Interstitial tissue was manua...
متن کاملChemerin suppresses ovarian follicular development and its potential involvement in follicular arrest in rats treated chronically with dihydrotestosterone.
In the present study, we have investigated the cellular mechanisms of androgen-induced antral follicular growth arrest and the possible involvement of chemerin and its receptor chemokine-like receptor 1 (CMKLR1) in this process, using a chronically androgenized rat model. We hypothesize that hyperandrogenism induces antral follicle growth arrest via the action of chemerin and ovarian structural...
متن کاملIsolation of common carp ovarian follicular cells and evaluation of their endocrine activity in primary cell culture
To study viability and activity of isolated common carp, Cyprinus carpio, ovarian follicular cells (granulosa and theca cells), 17- α -Hydroxy progesterone (17 α -OHP) and 17 β -Estradiol (E2) levels were estimated in the culture media of cultivated carp ovarian follicular cells, using radioimmunoassay (RIA). Oocytes were isolated from the ovaries of female carp. Interstitial tissue was manua...
متن کاملFollicular development in heifers infused with follicle-stimulating hormone.
Follicle-stimulating hormone from different species has been used to increase ovulation and calving rates in cattle, injections proving to be most successful when given during the late follicular phase of the oestrous cycle or in combination with progestagens (Willett & Buckner, 1953; Bellows, Anderson & Short 1969). Some investigations have resulted in substantial increases in ovulation and ca...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1994
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.1020095