Abstract:
BACKGROUND:Vitamin D-binding protein (DBP) is the main systemic transporter of 1.25(OH)2D3 and is essential for its cellular endocytosis. There are two known polymorphisms in exon 11 of the DBP gene resulting in amino acid variants: GAT-->GAG substitution replaces aspartic acid by glutamic acid in codon 416; and ACG-->AAG substitution in codon 420 leads to an exchange of threonine for lysine. These DBP variants lead to differences in the affinity for 1.25(OH)2D3. Correlations between DBP alleles and type 1 diabetes have been described in different populations. Therefore, we investigated the polymorphism in codon 416 of the DBP gene for an association with autoimmune markers of type 1 diabetes. DESIGN AND METHODS:The present analysis was a case control study. 110 patients, 68 controls, and 115 first-degree relatives were genotyped for the DBP polymorphism in codon 416. DNA typing of DBP locus was performed by the PCR-restriction fragment length polymorphism method (RFLP). RESULTS:The frequencies of the Asp/Glu and Glu/Glu were significantly increased in diabetic subjects with detectable IA-2 antibodies (P < 0.01). On the contrary, the DBP Glu-containing genotype was not accompanied by differences in the prevalence of GAD65 antibodies. These finding supports a role of the vitamin D endocrine system in the autoimmune process of type 1 diabetes.
journal_name
Clin Biochemjournal_title
Clinical biochemistryauthors
Ongagna JC,Pinget M,Belcourt Adoi
10.1016/j.clinbiochem.2004.12.013subject
Has Abstractpub_date
2005-05-01 00:00:00pages
415-9issue
5eissn
0009-9120issn
1873-2933pii
S0009-9120(05)00004-4journal_volume
38pub_type
杂志文章abstract:OBJECTIVES:Presence of residual blood is a common problem in cerebrospinal fluid (CSF) diagnostics of ventriculitis. We hypothesised that neutrophil granulocytes in infected, blood-containing CSF lose CD62L expression. Therefore CD62L expression on neutrophils may present a complementary marker to distinguish between p...
journal_title:Clinical biochemistry
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journal_title:Clinical biochemistry
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pub_type: 临床试验,杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
doi:10.1016/s0009-9120(79)80125-3
更新日期:1979-12-01 00:00:00