Estrous Cycle Ratio as a Reproductive Index in the Rats

Vaginal Potential in Estrous Cycle of Rats

Bruzzone ME, Angelo S, Zipperj, Wheeler RG (Dept of Biophysics and Physiology, School of Medicine, University of Chile, Santiago, Chile, and the International Fertility Research Program, Research Triangle Park, NC, USA). Endocrinologic basis of electrochemicalcoginalpotential in estrous cycle of rats. IntJ Gynaecol Obstet 18. 22-25, 1980 This sequel to an earlier report on the correlation of va...

Motivated behavior and the estrous cycle in rats.

(1) The estrous cycle in the rat may be used to study recurrent changes in motor behaviors and motivation which are strongly related to cyclic hormonal and CNS changes. (2) The peak in motivated behaviors occurs during a sharply defined period on the night between proestrus and estrus and is evident in facilitated wheel-running, lordosis, and intracranial self-stimulation. (3) Behaviors without...

Hypothalamic Expression of KiSS1 and RFamide-related Peptide-3 mRNAs during The Estrous Cycle of Rats

Expression of RFamide-related peptide in the dorsomedial nucleus of hypothalamus during the estrous cycle of rats

Introduction: RFamide-related peptide (RFRP) is believed to act as an inhibitor of gonadotropin releasing hormone (GnRH) secretion. The aim of the present study was to compare the expression pattern of RFRP neurons in the dorsomedial nucleus of hypothalamus (DMH) at different phases of the rat estrous cycle. Methods: The phases of the estrous cycle were determined in 16 adult female Sprague-...

Estrous Cycle Synchronization In

E STRUS and ovulation in gilts have been successfully inhibited by daily injections of progesterone (Ulberg et al., 1951; Baker et al., 1954) and more recently by the inclusion of progestational compounds in the feed (Nellor, 1960; Dzuik and Baker, 1962). The successful use of orally active progestational agents to synchronize the estrous cycles of gilts without a subsequent reduction in fertil...