Quantitative trait loci mapping for cholesterol gallstones in AKR/J and C57L/J strains of mice.

Document Type

Article

Publication Date

2000

Keywords

Cholelithiasis, Cholesterol, Cholesterol-Dietary, Chromosome-Mapping, Crosses-Genetic, Gallbladder, Genetic-Markers, Genetic-Predisposition-to-Disease, Male, Mice, Mice-Inbred-AKR, Mice-Inbred-C57BL, Organ-Weight, Quantitative-Trait, SUPPORT-NON-U-S-GOVT, SUPPORT-U-S-GOVT-P-H-S

First Page

59

Last Page

65

JAX Source

Physiol Genomics 2000 Nov; 4(1):59-65.

Grant

DK34854/DK/NIDDK, DK36588/DK/NIDDK, DK51568/DK/NIDDK, etal

Abstract

Quantitative trait locus (QTL) mapping was used to locate genes that determine the difference in cholesterol gallstone disease between the gallstone-susceptible strain C57L/J and the gallstone-resistant strain AKR/J. Gallstone weight was determined in 231 male (AKR x C57L) F(1) x AKR backcross mice fed a lithogenic diet containing 1% cholesterol, 0.5% cholic acid, and 15% butterfat for 8 wk. Mice having no stones and mice having the largest stones were genotyped at approximately 20-cM intervals to find the loci determining cholesterol gallstone formation. The major locus, Lith1, mapped near D2Mit56 and was confirmed by constructing a congenic strain, AK. L-Lith1(s). Another locus, Lith2, mapped near D19Mit58 and was also confirmed by constructing a congenic strain AK.L-Lith2(s). Other suggestive, but not statistically significant, loci mapped to chromosomes 6, 7, 8, 10, and X. The identification of these Lith genes will elucidate the pathophysiology of cholesterol gallstone formation.

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