RGD Reference Report - Genetic analysis for diabetes in a new rat model of nonobese type 2 diabetes, Spontaneously Diabetic Torii rat. - Rat Genome Database

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Genetic analysis for diabetes in a new rat model of nonobese type 2 diabetes, Spontaneously Diabetic Torii rat.

Authors: Masuyama, T  Fuse, M  Yokoi, N  Shinohara, M  Tsujii, H  Kanazawa, M  Kanazawa, Y  Komeda, K  Taniguchi, K 
Citation: Masuyama T, etal., Biochem Biophys Res Commun 2003 Apr 25;304(1):196-206.
RGD ID: 631173
Pubmed: PMID:12705906   (View Abstract at PubMed)

The Spontaneously Diabetic Torii (SDT) rat has recently been established as a new rat model of nonobese type 2 diabetes. In this study, we characterized diabetic features in SDT rats, and performed quantitative trait locus (QTL) analysis for glucose intolerance using 319 male (BNxSDT)xSDT backcrosses. Male SDT rats exhibited glucose intolerance at 20 weeks, and spontaneously developed diabetes with the incidence of 100% at 38 weeks, and glucose intolerance is well associated with the development of diabetes. The QTL analysis identified three highly significant QTLs (Gisdt1, Gisdt2, and Gisdt3) for glucose intolerance on rat chromosomes 1, 2, and X, respectively. The SDT allele for these QTLs significantly exacerbated glucose intolerance. Furthermore, synergistic interactions among these QTLs were detected. These findings indicate that diabetic features in SDT rats are inherited as polygenic traits and that SDT rats would provide insights into genetics of human type 2 diabetes.

Disease Annotations    

Phenotype Annotations    

Mammalian Phenotype

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Strains with Phenominer Data Strains with phenominer data
BN/Seac SDT/Jcl

Objects Annotated

Gluco13  (Glucose level QTL 13)
Gluco14  (Glucose level QTL 14)
Gluco15  (Glucose level QTL 15)

BN/Seac  (NA)
SDT/Jcl  (NA)

Objects referenced in this article
Strain BN.SDT-Gluco13/Nyo null Rattus norvegicus
Strain BN.SDT-Gluco14/Nyo null Rattus norvegicus
Strain SDT.BN-Gluco13/Nyo null Rattus norvegicus
Strain SDT.BN-Gluco14/Nyo null Rattus norvegicus

Additional Information