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J Steroid Biochem Mol Biol. 2004 May;89-90(1-5):155-7.

CYP27B1 polymorphisms variants are associated with type 1 diabetes mellitus in Germans.

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1
Department of Internal Medicine I, Division of Endocrinology, University Hospital Frankfurt, Theodor Stern Kai 7, Frankfurt am Main 60596, Germany.

Abstract

CYP27B1 (25-hydroxyvitamin D(3)-1alpha-hydroxylase) catalyzes the metabolization of 25-hydroxyvitamin D(3) to 1,25(OH)(2)D(3) the most active natural Vitamin D metabolite. 1,25(OH)(2)D(3) plays a role in the regulation of autoimmunity and cell proliferation and prevents the development of autoimmune diabetes mellitus in animal models besides other autoimmune disorders. One hundred and eighty-seven families with one offspring affected with type1diabetes mellitus were genotyped for the polymorphisms in the promoter region (-1260 C/A) and intron 6 (2338 T/C) of the CYP27B1 gene on chromosome 12 q13.1-13.3 and extended transmission disequilibrium tests (ETDT) were performed. The haplotype CT (-1260 A/2338 T) was significantly more often transmitted to affected offspring (96 transmitted (T) versus 63 not transmitted (NT), P = 0.0089). While the AT (-1260 C/2838 T) was significantly less often transmitted (37 T versus 60 NT, P = 0.0195). This study suggests that CYP27B1 haplotypes may confer susceptibility to type 1 diabetes mellitus in Germans.

PMID:
15225764
DOI:
10.1016/j.jsbmb.2004.03.095
[Indexed for MEDLINE]
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