PLASMA LEVELS OF TESTOSTERONE IN MALE RABBITS FOLLOWING COPULATION
نویسندگان
چکیده
منابع مشابه
Haemolysis following copulation in male rats.
In the course of a study on the effects of mating on plasma lh concentrations in the rat, a serendipitous finding was that plasma samples collected from male rats shortly after copulation often showed obvious evidence of haemolysis. These observations prompted a more detailed investigation. Adult Wistar rats were maintained under reversed lighting (lights on from 21.00 to 11.00 hours). Mating t...
متن کاملTestosterone, preoptic dopamine, and copulation in male rats.
Steroid hormones prime neural circuits for sexual behavior, in part by regulating enzymes, receptors, or other proteins affecting neurotransmitter function. Dopamine facilitates male sexual behavior in numerous species and is released before and/or during copulation in three integrative neural systems. The nigrostriatal system enhances readiness to respond; the mesolimbic system promotes many a...
متن کاملKhat (Catha edulis) lowers plasma luteinizing hormone (LH) and testosterone secretion, but increases cortisol levels in male rabbits.
AIM This study investigated the effects of fresh khat extract on specific circulating hormones in male rabbits. MATERIALS AND METHODS A total of 25 male New Zealand White rabbits were divided into five groups each comprising five animals. The first four groups were fed four doses (1.5 g/kg, 4.5 g/kg, 13.5 g/kg and 40.5 g/kg body weight) of khat extract twice a week for 5 weeks while the last ...
متن کاملSEMEn cHArActErIStIcS And PLASMA tEStoStEronE oF nEW-ZEALAnd MALE rABBItS AS AFFEctEd BY EnVIronMEntAL tEMPErAturES
Sixteen adult New-Zealand White rabbit males at the age of 6 months and weight of 2.5 ± 0.14 kg were used to study semen characteristics and some biochemical and enzymatic properties of seminal plasma, and blood plasma testosterone during spring and summer seasons. The averages of maximum and minimum ambient temperature in both seasons were 27.1 oC and 18.9 oC in spring, versus 32.2 oC and 26.5...
متن کاملEffects of testosterone metabolites on copulation and medial preoptic dopamine release in castrated male rats.
The medial preoptic area (MPOA) is an important integrative site for male sexual behavior. Dopamine (DA) is released in the MPOA of male rats shortly before and during copulation. The recent presence of testosterone (T) may be necessary for this precopulatory increase in release. Previously, the postcastration loss of copulatory ability mirrored the loss of the DA response to an estrous female,...
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ژورنال
عنوان ژورنال: Reproduction
سال: 1969
ISSN: 1470-1626,1741-7899
DOI: 10.1530/jrf.0.0190273