Abstract
Administration of naloxone (SC 5 mg/kg) significantly reduced ejaculation and mounting in male rats in the weeks following castration. A similar effect was obtained by injecting morphine (SC 1 or 5 mg/kg). In contrast, the same dosages of naloxone or morphine did not affect the sexual performance of gonadally intact males. Opioid peptides may contribute to the temporary persistence of sexual behavior in testosterone-deficient male mammals, in which incentive qualities of the female partner are an important determinant of sexual arousal.
Original language | English |
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Pages (from-to) | 361-364 |
Number of pages | 4 |
Journal | Pharmacology Biochemistry and Behavior |
Volume | 22 |
Issue number | 3 |
DOIs | |
State | Published - Mar 1985 |
Externally published | Yes |
Keywords
- Endophins
- Morphine
- Naloxone
- Rat sexual behavior