title: Vitamin D receptor gene polymorphism affects onset pattern of type 1 diabetes.
abstract: Type 1 diabetes mellitus is recognized as a T-cell-mediated autoimmune disease. Vitamin D compounds are known to suppress T-cell activation by binding to the vitamin D receptor (VDR); and thus, VDR gene polymorphisms may be related to T-cell-mediated autoimmune diseases. We, therefore, investigated a VDR gene polymorphism in type 1 diabetes. We examined the VDR gene Bsm I polymorphism in 203 type 1 diabetic patients and 222 controls, and the association between the VDR gene polymorphism and type 1 diabetes and their onset pattern. We found a significantly higher frequency of B allele in type 1 diabetics overall, compared with controls (P = 0.0010). Moreover, there was a significant difference in B-allele frequency between acute-onset type 1 diabetics and controls (P = 0.0002), whereas this difference was not observed between slow-onset type 1 diabetics and controls. Regardless of the existence of islet-associated autoantibody, we found a significant difference in B-allele frequency between acute-onset type 1 diabetics and controls. In conclusion, we found an association between a VDR gene polymorphism and acute-onset type 1 diabetes. Assessment of this VDR gene polymorphism may contribute to prediction of the onset pattern in individuals with a high risk of type 1 diabetes.
authors.affiliation: Department of Internal Medicine, Keio University School of Medicine, Tokyo 160-8582, Japan. asmd@sc.itc.keio.ac.jp
authors.forename: Yoshiko
authors.initials: Y
authors.lastname: Motohashi
authors.forename: Satoru
authors.initials: S
authors.lastname: Yamada
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Yanagawa
authors.forename: Taro
authors.initials: T
authors.lastname: Maruyama
authors.forename: Ryuji
authors.initials: R
authors.lastname: Suzuki
authors.forename: Masaaki
authors.initials: M
authors.lastname: Niino
authors.forename: Toshiyuki
authors.initials: T
authors.lastname: Fukazawa
authors.forename: Akira
authors.initials: A
authors.lastname: Kasuga
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Hirose
authors.forename: Koichi
authors.initials: K
authors.lastname: Matsubara
authors.forename: Akira
authors.initials: A
authors.lastname: Shimada
authors.forename: Takao
authors.initials: T
authors.lastname: Saruta
mesh_terms: D000208:Acute Disease; D000293:Adolescent; D000328:Adult; D017668:Age of Onset; D000368:Aged; D002648:Child; D002675:Child, Preschool; D003922:Diabetes Mellitus, Type 1 / Q000453:epidemiology / Q000235:genetics*; D005260:Female; D020022:Genetic Predisposition to Disease / Q000453:epidemiology; D005838:Genotype; D006684:HLA-DR Antigens / Q000235:genetics; D059810:HLA-DR Serological Subtypes; D015804:HLA-DR4 Antigen / Q000235:genetics; D006801:Humans; D007223:Infant; D007564:Japan / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D015995:Prevalence; D018167:Receptors, Calcitriol / Q000235:genetics*; D012307:Risk Factors
chemical_list: D006684:HLA-DR Antigens; D059810:HLA-DR Serological Subtypes; D015804:HLA-DR4 Antigen; C038988:HLA-DR9 antigen; D018167:Receptors, Calcitriol