Tgq18^DBA/1J
QTL Variant Detail

Summary

• QTL variant: Tgq18^DBA/1J
• Name: triglyceride QTL 18; DBA/1J
• MGI ID: MGI:3828321
• QTL: Tgq18 Location: Chr8:81186736-81186736 bp Genetic Position: Chr8, Syntenic

Variant origin

• Strain of Specimen: DBA/1J

Variant description

• Allele Type: QTL

Notes

Mapping and Phenotype information for this QTL, its variants and associated markers

J:142770

Linkage analysis was performed using a backcross derived from closely related inbred strains DBA/1J and DBA/2J. The genetic composition of these 2 inbred strains differs by just 5.6% at the SNP level. A total of 294 mice from (DBA/1J x DBA/2J)F1 x DBA/1Jand (DBA/1J x DBA/2J)F1 x DBA/2J populations were screened for 6,949 polymorphic SNP markers. Backcross mice were placed on a high-fat diet at 8 weeks of age and phenotyped for plasma triglyceride and HDL concentrations at 8, 11 and 16 weeks of age. Parental strain DBA/2J displays significantly increased plasma triglyceride concentrations on a CHOW diet compared to parental strain DBA/1J. Male DBA/2J animals display significantly increased plasma triglyceride and HDL concentrations after an 8 week high fat diet compared to DBA/1J males.

Tgq18 (triglyceride QTL 18) mapped to 40 cM on mouse Chromosome 18 at rs13479852 (82.89 Mb) with LOD=4.5. DBA/2J-derived alleles at Tgq18 confer increased plasma triglyceride concentrations on a CHOW diet. This locus also displays suggestive linkage to plasma triglyceride levels after 3 weeks on a high fat diet (LOD=2.7) and after 8 weeks on a high fat diet (LOD=2.9). [Table 2 and 3].

References

• Original: J:142770 Stylianou IM, et al., Differences in DBA/1J and DBA/2J reveal lipid QTL genes. J Lipid Res. 2008 Nov;49(11):2402-13
• All: 1 reference(s)