Alpha-Melanocyte Stimulating Hormone Reduces Putative Stress-Induced Sickness Behaviors in Isolated Guinea Pig Pups

Document Type

Article

Publication Date

4-3-2006

Abstract

We have proposed that passive responses observed following maternal separation in guinea pig pups represent “stress-induced sickness behaviors” mediated by proinflammatory processes. In this study, the anti-inflammatory peptide, alpha-melanocyte stimulating hormone (α-MSH) administered intracerebroventricularly, but not intraperitoneally, reduced the passive responses of crouching, eye-closing, and extensive piloerection relative to levels following administration of vehicle. These findings support our hypothesis and are as would be expected if pro-inflammatory processes act centrally to promote the passive behaviors of separated guinea pig pups.

DOI

10.1016/j.bbr.2005.08.022

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