Quantitative trait loci for sensitivity to ethanol intoxication in a C57BL/6J×129S1/SvImJ inbred mouse cross
| Autor: | Daniel F Fisher, Jason A. Bubier, Andrew Holmes, Lauren Lederle, Benita Hurd, Elissa J. Chesler, Aaron Plitt, Carly Kiselycznyk |
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| Rok vydání: | 2011 |
| Předmět: |
Male
Candidate gene Ataxia Mice 129 Strain Population Quantitative Trait Loci Biology Quantitative trait locus Article 03 medical and health sciences Mice 0302 clinical medicine Chromosome 16 Quantitative Trait Heritable Genotype mental disorders medicine Genetics Animals Humans Inbreeding education Crosses Genetic 030304 developmental biology 0303 health sciences education.field_of_study Ethanol Chromosome Mapping Phenotype Human genetics Mice Inbred C57BL Disease Models Animal Female medicine.symptom Alcoholic Intoxication 030217 neurology & neurosurgery |
| Zdroj: | Mammalian Genome |
| ISSN: | 1432-1777 |
| Popis: | Individual variation in sensitivity to acute ethanol (EtOH) challenge is associated with alcohol drinking and is a predictor of alcohol abuse. Previous studies have shown that the C57BL/6J (B6) and 129S1/SvImJ (S1) inbred mouse strains differ in responses on certain measures of acute EtOH intoxication. To gain insight into genetic factors contributing to these differences, we performed quantitative trait locus (QTL) analysis of measures of EtOH-induced ataxia (accelerating rotarod), hypothermia, and loss of righting reflex (LORR) duration in a B6 × S1 F2 population. We confirmed that S1 showed greater EtOH-induced hypothermia (specifically at a high dose) and longer LORR compared to B6. QTL analysis revealed several additive and interacting loci for various phenotypes, as well as examples of genotype interactions with sex. QTLs for different EtOH phenotypes were largely non-overlapping, suggesting separable genetic influences on these behaviors. The most compelling main-effect QTLs were for hypothermia on chromosome 16 and for LORR on chromosomes 4 and 6. Several QTLs overlapped with loci repeatedly linked to EtOH drinking in previous mouse studies. The architecture of the traits we examined was complex but clearly amenable to dissection in future studies. Using integrative genomics strategies, plausible functional and positional candidates may be found. Uncovering candidate genes associated with variation in these phenotypes in this population could ultimately shed light on genetic factors underlying sensitivity to EtOH intoxication and risk for alcoholism in humans. Electronic supplementary material The online version of this article (doi:10.1007/s00335-012-9394-2) contains supplementary material, which is available to authorized users. |
| Databáze: | OpenAIRE |
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