Genetics, haloperidol, and the Fos response in the basal ganglia: A comparison of the C57BL/6J and DBA/2J inbred mouse strains

Nilay Patel, Barbara Hitzemann, Robert Hitzemann

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The haloperidol-induced increase of Fos-like immunoreactive (Fos-li) neurons in the basal ganglia was compared in the C57BL/6J (B6) and DBA/2J (D2) inbred mouse strains. The D2 strain is 10-fold more sensitive than the B6 strain to haloperidol-induced catalepsy, a putative animal model of the extrapyramidal symptoms (EPS) seen after the administration of typical neuroleptics. In contrast, the strains are equally sensitive to the haloperidol facilitation of prepulse inhibition of the acoustic startle response, a measure of drug efficacy on the mesolimbic dopamine system. The haloperidol effects on Fos-li neurons were examined over the range of 0.1 to 6.0 mg/kg; the ED(50s) for haloperidol-induced catalepsy are 0.4 and 3.8 mg/kg in the D2 and B6 strains, respectively. In neither the core or shell of the nucleus accumbens nor the caudate-putamen (including the dorsolateral aspect) did the D2 strain show a greater Fos response compared to the B6 strain. In fact, in the dorsolateral caudate-putamen, the B6 strain showed a modest but significantly greater Fos response. However, at the output nuclei of the basal ganglia, the entopeduncular nucleus (EP) and the substantia nigra zona reticulata (SNr), the D2 strain consistently showed a greater Fos response. These data suggest that the EP and SNr may be important to understanding the difference in haloperidol-induced catalepsy between the D2 and B6 strains.

Original languageEnglish (US)
Pages (from-to)480-491
Number of pages12
JournalNeuropsychopharmacology
Volume18
Issue number6
DOIs
StatePublished - Jun 1998
Externally publishedYes

Fingerprint

Inbred Strains Mice
Haloperidol
Basal Ganglia
Catalepsy
Entopeduncular Nucleus
Putamen
Herpes Zoster
Startle Reflex
Neurons
Nucleus Accumbens
Acoustics
Antipsychotic Agents
Dopamine
Animal Models
Pharmaceutical Preparations

Keywords

  • Basal ganglia
  • C-Fos
  • Catalepsy
  • Genetics
  • Haloperidol
  • Inbred strains
  • Mouse

ASJC Scopus subject areas

  • Pharmacology

Cite this

Genetics, haloperidol, and the Fos response in the basal ganglia : A comparison of the C57BL/6J and DBA/2J inbred mouse strains. / Patel, Nilay; Hitzemann, Barbara; Hitzemann, Robert.

In: Neuropsychopharmacology, Vol. 18, No. 6, 06.1998, p. 480-491.

Research output: Contribution to journalArticle

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