DOI: 10.2337/dc08-0280
Differences in the Contribution of CTLA4 Gene to Susceptibility to Fulminant and Type 1A Diabetes in Japanese Patients
1Department of Metabolism/Diabetes and Clinical Nutrition, Nagasaki University Hospital of Medicine and Dentistry eijikawa{at}nagasaki-u.ac.jp ABSTRACT Objective: We examined the contribution of the CTLA4 gene in the susceptibility to fulminant type 1 diabetes (T1D), and compared them with "classic" type 1A diabetes (T1AD). Research design and methods: We genotyped the +49G>A and CT60 G>A of the CTLA4 in fulminant T1D (n=55), "classic" T1AD (n=91), and healthy control subjects (n=369). We also assessed serum levels of soluble form of CTLA4. Results: The +49GG and CT60GG genotypes were associated with T1AD (P<0.001). In contrast, the CT60AA genotype, but not +49G>A, was associated with fulminant T1D (P<0.05), especially in patients carrying HLA-DR4 (P<0.001). Serum levels of sCTLA4 were significantly decreased in patients with fulminant T1D (P<0.05). Conclusions: These results suggest that CTLA4 CT60 affects the genetic susceptibility to fulminant T1D. Furthermore, the contribution of the CTLA4 to the disease susceptibility is distinct between fulminant T1D and "classic" T1AD.
|
|
|
|||||||||||||||||||||||||||