Pulsatile LH Release During the Ovulatory LH Surge on Proestrus in the Rat1
نویسندگان
چکیده
منابع مشابه
LH release in mink (Mustela vison). Pattern of the LH surge and effect of metabolic status.
The mink is a seasonal breeder with induced ovulation and delayed implantation. Reproductive processes are strongly influenced by energy supply and body condition. Items for which there is paucity or complete lack of data were the main objectives of this study: the temporal relationship between copulation and the pre-ovulatory LH surge and the influence of energy supply on LH release. A total o...
متن کاملOpioid modulation of hypothalamic catecholaminergic neurotransmission and the pre-ovulatory LH surge in the rat.
We have investigated the inter-relationship between the opioid and catecholaminergic systems in the control of LH secretion, and the involvement of &mgr;- and kappa-opioid subtypes in this process. Conscious female rats were intraperitoneally injected with either &mgr;- (diamorphine) or kappa-opioid agonists (U-50488H) alone or with their respective antagonists (naloxone and MR2266) before the ...
متن کاملOpioid Modulation of the Pre–ovulatory LH Surge in the Conscious Rat: Involvement of Indolamines
371 Abstract: Endogeonus opioid peptides play an important role in the generation of the pre–ovulatory LH surge. We investigated the interrelationship between the oploid and indolaminergic systems in the regutalion of LH secretion, and the involvement of μ–and κ–opioid subtypes in this process. Concsious female rats bearing cannula in the femoral artery were injected intraperitoneally with μ–(d...
متن کاملEvaluation of LH secretory dynamics during the rat proestrous LH surge.
The preovulatory luteinizing hormone (LH) surge results from the integration of complex interactions among gonadal steroids and hypothalamic and pituitary hormones. To evaluate changes in LH secretory dynamics that occur during the rat LH surge, we have 1) obtained frequently sampled serum LH concentration time series, 2) used both waveform-dependent and waveform-independent convolution analyse...
متن کاملUnilaterally blocking the muscarinic receptors in the suprachiasmatic nucleus in proestrus rats prevents pre-ovulatory LH secretion and ovulation
BACKGROUND The suprachiasmatic nucleus (SCN) and the cholinergic system of various regions of the hypothalamus participate in the regulation of gonadotropin-releasing hormone (GnRH) and gonadotropin secretion, which are necessary for the occurrence of ovulation. In the present study, our goal was to analyse the effects of unilaterally blocking the muscarinic receptors in the SCN on ovulation an...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Biology of Reproduction
سال: 1981
ISSN: 0006-3363,1529-7268
DOI: 10.1095/biolreprod24.1.100