GeneSet Information

Tier II GS84222 • differences in cocaine responsiveness (Published QTL, Chr 9)

DESCRIPTION:

differences in cocaine responsiveness spans 55.19 - 105.19 Mbp (NCBI Build 37) on Chr9. This interval was obtained by using an interval width of 25 Mbp around the peak marker (Build 37, MGI, http://informatics.jax.org).

LABEL:

QTL for differences in cocaine responsiveness on Chr9 at Mod-i (80.19 Mbp , Build 37)

SCORE TYPE:

Binary

DATE ADDED:

2010-10-01

DATE UPDATED:

2019-01-07

SPECIES:

AUTHORS:

Tolliver BK, Belknap JK, Woods WE, Carney JM

TITLE:

Genetic analysis of sensitization and tolerance to cocaine.

JOURNAL:

The Journal of pharmacology and experimental therapeutics Sep 1994, Vol 270, pp. 1230-8

ABSTRACT:

The present study investigated the effects of acute and repeated administration of cocaine (1.0-56.0 mg/kg) on locomotor activity in the genetically distinct DBA/2J and C57BL/6J inbred strains of mice. In addition, quantitative trait loci analysis of the effects of acute and repeated cocaine in 16 BXD recombinant inbred strains was used to provisionally detect and map minor gene loci which associate with cocaine responsiveness. Whereas locomotor activity was elevated maximally in both strains by 32 mg/kg of cocaine, DBA/2J mice were stimulated to a much greater extent than C57BL/6J mice. The stimulant effects of cocaine were diminished to control levels in DBA/2J mice after repeated daily injections, whereas cocaine-induced locomotion remained consistent in C57BL/6J mice throughout the 7-day testing period. Emergence of stereotyped behavior with repeated daily injections of 32 mg/kg of cocaine was observed in DBA/2J but not C57BL/6J mice. No differences in brain cocaine levels were found between the DBA/2J and C57BL/6J strains after acute or repeated injections. Quantitative trait loci analysis indicated significant associations of differences in cocaine responsiveness with marker loci on several chromosomes in the BXD recombinant inbred series. Those marker loci associated with the acute cocaine response were in most cases different from those markers associated with long-term responses. The current results demonstrate that genotype-dependent variation exists in behavioral responsiveness to cocaine in mice and suggest that the acute and long-term responses to cocaine may be under the control of separate sets of genes. PUBMED: 7932176
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Annotation Information



Motor Activity (D009043)
Behavior (D001519)
Chromosomes (D002875)
Quantitative Trait Loci (D040641)
Stereotyped Behavior (D013239)
Cocaine (D003042)
Informatics (D048088)
Mice, Inbred Strains (D008815)
Organization and Administration (D009934)
Locomotion (D008124)
Injections (D007267)
Association (D001244)
sensitization (GO:0046960)
locomotion (GO:0040011)

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