Abstract
Corticotropin-releasing factor (CRF) has been shown to have potent central nervous system-activating effects when administered intracerebroventricularly (i.c.v.). In the present experiment, this activating effect was exaggerated by use of a stress-motivated behavioral paradigm. Low doses of CRF (0.01 and 0.1 μg/rat) administered i.c.v. facilitated stress-induced fighting. More importantly, α-helical CRF-(9–41), a CRF antagonist, blocked stress-induced fighting produced by higher levels of stress. These results suggest that CRF in the central nervous system may have a role in mediating behavioral responses to stress.
Published Version
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