Abstract：
UNLABELLED:Mating in rabbits lasts only 3-5s but profoundly changes the female׳s physiology and behavior (e.g., inhibition of scent-marking and ambulation, changes in EEG, and release of GnRH). The behavioral responsiveness to copulation is reduced in lactating rabbits, relative to estrous does, but is enhanced after suppressing a single nursing bout ("biostimulation"). Little is known about the mechanisms mediating the differential responsiveness to mating among estrous, lactating, and biostimulated rabbits. To begin addressing this issue we quantified the number of c-FOS-immunoreactive (IR) cells in the preoptic area (POA), dorsomedial hypothalamus (DMH), ventromedial hypothalamus (VMH), infundibular nucleus (INF), paraventricular nucleus (PVN), supraoptic nucleus (SON), and lateral septum (LS) in mated and unmated does from the above three reproductive conditions. Mating increased c-FOS-IR cells in the POA and PVN relative to unmated estrous does. Biostimulation increased c-FOS-IR cells in the PVN, relative to lactating does, regardless of mating. Lactation reduced the responsiveness of the LS and INF to copulation but increased it in the DMH. No differences were found in the VMH. CONCLUSIONS:a) copulation activates forebrain nuclei that regulate scent-marking (POA), ovulation (INF), and post-coital oxytocin release (PVN); b) lactation and suppression of one nursing bout modulate the magnitude of such changes.
journal_name
Brain Resjournal_title
Brain researchauthors
González-Mariscal G,García Dalmán C,Jiménez Adoi
10.1016/j.brainres.2015.02.033subject
Has Abstractpub_date
2015-05-22 00:00:00pages
66-74eissn
0006-8993issn
1872-6240pii
S0006-8993(15)00133-Xjournal_volume
1608pub_type
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