Influence of Age and Testosterone on the Response of Male Rats to Parachlorophenylalanine

September 1972 in “ British Journal of Pharmacology ”

VALERIE J. BOND, Elizabeth E. Shillito, Marthe Vogt

testosterone parachlorophenylalanine PCPA testosterone propionate 5-hydroxytryptamine 5-HT hair loss castration serotonin

TLDR PCPA induces hypersexual behavior in male rats regardless of age or castration status.

The study investigated the effects of parachlorophenylalanine (PCPA) and testosterone on male rats. Castrated and adrenalectomized rats exhibited hypersexual behavior 24 hours after PCPA treatment, similar to intact rats. A dose of 100 mg/kg PCPA induced mounting behavior and significantly reduced cerebral 5-hydroxytryptamine (5-HT) levels. Chronic PCPA or testosterone propionate treatment in juvenile rats led to hair loss due to increased social interaction. Testosterone propionate also induced mounting behavior without altering brain 5-HT levels. The frequency of mounting behavior post-PCPA treatment was higher in younger rats, but the age of castration did not affect the outcomes.

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Influence of Age and Testosterone on the Response of Male Rats to Parachlorophenylalanine

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