RGD Reference Report - Fine-mapping a locus for glucose tolerance using heterogeneous stock rats. - Rat Genome Database
Submit Data |  Help |  Video Tutorials |  News |  Publications |  FTP Download |  REST API |  Citing RGD |  Contact   

Fine-mapping a locus for glucose tolerance using heterogeneous stock rats.

Authors: Solberg Woods, L  Holl, K  Tschannen, M  Valdar, W 
Citation: Solberg Woods L, etal., Physiol Genomics. 2010 Jan 12.
RGD ID: 2316693
Pubmed: (View Article at PubMed) PMID:20068026
DOI: Full-text: DOI:10.1152/physiolgenomics.00178.2009

Heterogeneous stock (HS) animals provide the ability to map quantitative trait loci at high resolution (less than 5 Megabases) in a relatively short time period. In the current study, we hypothesized that the HS rat colony would be useful for fine-mapping a region on rat chromosome 1 that has previously been implicated in glucose regulation. We administered a glucose tolerance test to 515 HS rats and genotyped these animals with 69 microsatellite markers, spaced an average distance of less than one Megabase (Mb) apart, on a 67 Mb region of rat chromosome 1. Using regression modeling of inferred haplotypes based on a hidden Markov model reconstruction and mixed model analysis in which we accounted for the complex family structure of the HS, we identified one sharp peak within this region. Using positional bootstrapping, we determined the most likely location of this locus is from 205.04-207.48Mb. This work demonstrates the utility of HS rats for fine-mapping complex traits and emphasizes the importance of taking into account family structure when using highly recombinant populations. Key words: type 2 diabetes, quantitative trait loci, genetic maping, mixed model analysis.

Annotation

Disease Annotations    

Phenotype Annotations    

Mammalian Phenotype
Objects Annotated

QTLs
Gluco56  (Glucose level QTL 56)

Strains
ACI/Eur  (August x Copenhagen Irish)
WKY/NHsd  (NA)

Objects referenced in this article
0 ACI/N A X C 9935, Irish All species
0 NMcwi:HS Heterogeneous stock All species
0 WKY/N null All species

Additional Information