Abstract:
:The effect of electrolytic lesion of the paraventricular nucleus of the hypothalamus (PVN) on yawning and penile erection induced by apomorphine, oxytocin and adrenocorticotropic hormone (ACTH1-24) was studied in male rats. In sham-operated rats, apomorphine (50 micrograms/kg s.c.), oxytocin (30 ng i.c.v.), and ACTH1-24 (10 micrograms i.c.v.) significantly increased the number of yawning and penile erection episodes. In PVN-lesioned rats, apomorphine- and oxytocin-, but not ACTH-induced responses were strongly reduced. These results confirm our previous observations showing that the PVN has a crucial role in the expression of yawning and penile erection induced by dopamino-mimetic drugs and oxytocin, and suggest that ACTH-derived peptides induce the above responses by a mechanism not involving PVN hypothalamic dopamine or oxytocin.
journal_name
Brain Resjournal_title
Brain researchauthors
Argiolas A,Melis MR,Mauri A,Gessa GLdoi
10.1016/0006-8993(87)91305-9subject
Has Abstractpub_date
1987-09-22 00:00:00pages
349-52issue
1-2eissn
0006-8993issn
1872-6240pii
0006-8993(87)91305-9journal_volume
421pub_type
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