Lower levels of plasma 25-hydroxyvitamin D among young adults at diagnosis of autoimmune type 1 diabetes compared with control subjects: results from the nationwide Diabetes Incidence Study in Sweden (DISS)
2006 (English)In: Diabetologia, ISSN 0012-186X, E-ISSN 1432-0428, Vol. 49, no 12, 2847-2852 p.Article in journal (Refereed) Published
Low plasma vitamin D concentrations may promote the development of type 1 diabetes. To test this hypothesis, we measured plasma 25-hydroxyvitamin D (25OHD) in young adults with type 1 diabetes.
The nationwide Diabetes Incidence Study in Sweden (DISS) covers 15- to 34-year-old people with newly diagnosed diabetes. Blood samples at diagnosis were collected during the 2-year period 1987/1988. Patients with islet antibodies (islet cell antibodies, GAD antibodies or tyrosine phosphatase-like protein antibodies) were defined as having autoimmune type 1 diabetes. Plasma 25OHD was measured in samples taken from 459 patients at the time of diagnosis, and in 138 of these subjects 8 years later. The results were compared with age- and sex-matched control subjects (n=208).
At diagnosis, plasma 25OHD levels were significantly lower in patients with type 1 diabetes than in control subjects (82.5 +/- 1.3 vs 96.7 +/- 2.0 nmol/l; p < 0.0001). Eight years later, plasma 25OHD had decreased in patients (81.5 +/- 2.6 nmol/l; p=0.04). Plasma 25OHD levels were significantly lower in diabetic men than in diabetic women at diagnosis (77.9 +/- 1.4 vs 90.1 +/- 2.4 nmol/l; p < 0.0001) and at follow-up (77.1 +/- 2.8 nmol/l vs 87.2 +/- 4.5 nmol/l; p=0.048). 81.5 +/- 2.6 nmol/l; p=0.04). Plasma 25OHD levels were significantly lower in diabetic men than in diabetic women at diagnosis (77.9 +/- 1.4 vs 90.1 +/- 2.4 nmol/l; p < 0.0001) and at follow-up (77.1 +/- 2.8 nmol/l vs 87.2 +/- 4.5 nmol/l; p=0.048). Conclusions/interpretation The plasma 25OHD level was lower at diagnosis of autoimmune type 1 diabetes than in control subjects, and may have a role in the development of type 1 diabetes. Plasma 25OHD levels were lower in men than in women with type 1 diabetes. This difference may be relevant to the high incidence of type 1 diabetes among young adult men.
Place, publisher, year, edition, pages
2006. Vol. 49, no 12, 2847-2852 p.
25-Hydroxyvitamin D, 25OHD, Autoimmunity, GADA, IA-2A, ICA, Islet antibodies, Type 1 diabetes, Vitamin D
Medical and Health Sciences
IdentifiersURN: urn:nbn:se:uu:diva-124768DOI: 10.1007/s00125-006-0426-xISI: 000241948200005PubMedID: 17072585OAI: oai:DiVA.org:uu-124768DiVA: diva2:317946