Effects of chronic administration of antidepressants on mouse-killing behavior (muricide) in olfactory bulbectomized rats

Shigenobu Shibata, Hiroshi Nakanishi, Shigenori Watanabe, Showa Ueki

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41 Citations (Scopus)


Two forms of drug administration, i.e., systemic subcutaneous administration and microinjection into the medial amygdala were employed to examine the effect of chronic administration of psychotropic drug on muricide in olfactory bulbectomized rats. Muricide inhibition induced by the systemic doses of chlorpromazine (CPZ) 10 mg/kg and diazepam 10 mg/kg was reduced with chronic administration, while that by desipramine (DMI) 10 mg/kg and amitriptyline 30 mg/kg was augmented with chronic adminstration. Muricide inhibition induced by microinjection of CPZ was also reduced, while that by DMI was augmented. These results indicate that muricide by olfactory bulbectomized rats is a useful animal model for evaluating antidepressants and that a potential site of action of antidepressants is located in the medial amygdala.

Original languageEnglish
Pages (from-to)225-230
Number of pages6
JournalPharmacology, Biochemistry and Behavior
Issue number2
Publication statusPublished - 1984 Aug



  • Amygdala
  • Antidepressant
  • Chronic administration
  • Intracerebral microinjection
  • Muricide
  • Olfactory bulbectomy

ASJC Scopus subject areas

  • Biochemistry
  • Toxicology
  • Pharmacology
  • Clinical Biochemistry
  • Biological Psychiatry
  • Behavioral Neuroscience

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