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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
2009-7-22
pubmed:abstractText
25-Hydroxy vitamin D (25(OH)D) deficiency is linked with predisposition to autoimmune type 1 diabetes and multiple sclerosis. Our objective was to assess the relationship between serum 25(OH)D levels and thyroid autoimmunity. Subjects included students, teachers and staff aged 16-60 years (total 642, 244 males, 398 females). Serum free thyroxine, thyroid-stimulating hormone (TSH), and thyroid peroxidase autoantibodies (TPOAb), intact parathyroid hormone and 25(OH)D were measured by electrochemiluminescence and RIA, respectively. Thyroid dysfunction was defined if (1) serum TSH > or = 5 microU/ml and TPOAb>34 IU/ml or (2) TSH > or = 10 microU/ml but normal TPOAb. The mean serum 25(OH)D of the study subjects was 17.5 (sd 10.2) nmol/l with 87 % having values < or = 25 nmol/l. TPOAb positivity was observed in 21 % of subjects. The relationship between 25(OH)D and TPOAb was assessed with and without controlling for age and showed significant inverse correlation (r - 0.08, P = 0.04) when adjusted for age. The prevalence of TPOAb and thyroid dysfunction were comparable between subjects stratified according to serum 25(OH)D into two groups either at cut-off of < or = 25 or >25 nmol/l or first and second tertiles. Serum 25(OH)D values show only weak inverse correlation with TPOAb titres. The presence of such weak association and narrow range of serum 25(OH)D did not allow us to interpret the present results in terms of quantitative cut-off values of serum 25(OH)D. Further studies in vitamin D-sufficient populations with wider range of serum 25(OH)D levels are required to substantiate the findings of the current study.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
1475-2662
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
102
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
382-6
pubmed:meshHeading
pubmed-meshheading:19203420-Adolescent, pubmed-meshheading:19203420-Adult, pubmed-meshheading:19203420-Asian Continental Ancestry Group, pubmed-meshheading:19203420-Autoantibodies, pubmed-meshheading:19203420-Autoimmune Diseases, pubmed-meshheading:19203420-Chi-Square Distribution, pubmed-meshheading:19203420-Female, pubmed-meshheading:19203420-Humans, pubmed-meshheading:19203420-Hyperparathyroidism, pubmed-meshheading:19203420-Hypothyroidism, pubmed-meshheading:19203420-India, pubmed-meshheading:19203420-Iodide Peroxidase, pubmed-meshheading:19203420-Male, pubmed-meshheading:19203420-Middle Aged, pubmed-meshheading:19203420-Prevalence, pubmed-meshheading:19203420-Thyrotropin, pubmed-meshheading:19203420-Thyroxine, pubmed-meshheading:19203420-Vitamin D, pubmed-meshheading:19203420-Vitamin D Deficiency, pubmed-meshheading:19203420-Young Adult
pubmed:year
2009
pubmed:articleTitle
Prevalence of vitamin D deficiency and its relationship with thyroid autoimmunity in Asian Indians: a community-based survey.
pubmed:affiliation
Department of Endocrinology & Metabolism, All India Institute of Medical Sciences, New Delhi, India. gosravinder@hotmail.com
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't