Abstract:
:The sexual differences and the seasonal variation in the vasoactive intestinal peptide (VIP) content of the suprachiasmatic nucleus (SCN) of a desert rodent, the jerboa (Jaculus orientalis) were studied using immunocytochemical techniques. During the period of sexual activity (spring-early summer), the VIP immunoreactivity in the SCN was higher in females than in males. In the period of sexual quiescence (autumn), both males and females exhibited an even more intense VIP immunoreaction in the SCN as compared to spring. However, during this period, the sex-related differences in the VIP content of the SCN observed in spring were no longer detectable. The direct possible influence of sex hormones on the VIP content in the SCN, and the physiological significance of the seasonal variation observed in the VIP immunoreactivity in the SCN in this species remains to be determined.
journal_name
Neurosci Lettjournal_title
Neuroscience lettersauthors
Lakhdar-Ghazal N,Kalsbeek A,Pevet Pdoi
10.1016/0304-3940(92)90708-fkeywords:
subject
Has Abstractpub_date
1992-09-14 00:00:00pages
29-33issue
1-2eissn
0304-3940issn
1872-7972pii
0304-3940(92)90708-Fjournal_volume
144pub_type
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