PMID: 9171975May 1, 1997Paper

Effect of gonadotropin treatment on size, number, and cell proliferation of antral follicles in cows

Domestic Animal Endocrinology
P M FrickeJ J Ford

Abstract

To determine the effects of gonadotropins on the size, number, and cell proliferation of antral ovarian follicles, cows received FSH-P or vehicle beginning on Day 2 after estrus, and ovaries were collected 6, 12, 24, or 48 hr after the initiation of FSH-P treatment or 24 or 48 hr after the initiation of vehicle treatment. Ovaries also were collected from untreated cows on Day 2 after estrus (pretreatment). Before fixation, all visible antral follicles were counted and their surface diameters were recorded. Proliferating cells were immunolocalized in fixed follicles by using a specific primary antibody against proliferating cell nuclear antigen (PCNA), and the labeling index (LI; percentage of cells staining positively for PCNA) was determined for granulosa and thecal cells. After 48 hr of treatment, FSH-P-treated cows had fewer (P < 0.01) small antral follicles and more medium and large antral follicles (P < 0.01 and P < 0.05, respectively) compared with vehicle-treated cows. Granulosa cell LI was negatively correlated (P < 0.05) with follicular diameter for vehicle-treated but not for FSH-P-treated cows. Analysis of covariance using follicular diameter as a covariate to adjust to a common diameter indicated that granulosa cell...Continue Reading

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Citations

Jul 20, 1999·Molecular and Cellular Endocrinology·R J RodgersH F Irving-Rodgers
Nov 6, 2007·Theriogenology·G P AdamsP Malhi
Oct 26, 2011·Reproduction in Domestic Animals = Zuchthygiene·Y-L SunX Zhou
Sep 4, 2015·Reproduction : the Official Journal of the Society for the Study of Fertility·Gustavo Freitas IlhaRaj Duggavathi
Mar 24, 2007·Comparative Biochemistry and Physiology. Part A, Molecular & Integrative Physiology·Kriya L DunlapLawrence K Duffy
Nov 14, 2008·Animal Reproduction Science·Ricarda Maria dos SantosMario Binelli
Jan 21, 2006·Community Dentistry and Oral Epidemiology·H Meyer-LueckelA M Kielbassa
Jul 12, 2003·Journal of Animal Science·A N ScheafferL P Reynolds
Dec 16, 2004·Reproduction in Domestic Animals = Zuchthygiene·J B FeranilT Nakao
Aug 28, 2021·Animal Science Journal = Nihon Chikusan Gakkaihō·Thanya BunmaChainarong Navanukraw

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