Relationship between DDAH gene variants and serum ADMA level in individuals with type 1 diabetes

Rhys Fogarty, Sotoodeh Abhary, Shahrbanou Javadiyan, Nicholas Kasmeridis, Nikolai Petrovsky, Malcolm Whiting, Jamie Craig, Kathryn Burdon

    Research output: Contribution to journalArticle

    9 Citations (Scopus)

    Abstract

    Asymmetric dimethylarginine (ADMA) levels are elevated in diabetes and likely contribute to diabetic complications such as retinopathy and nephropathy. The DDAH enzymes are primarily responsible for ADMA metabolism. Polymorphisms in the dimethylarginine dimethylaminohydrolase (DDAH) 1 and 2 genes have been previously associated with serum ADMA levels in type 2 diabetes (T2DM). We sought to determine whether they are also associated with ADMA levels in individuals with type 1 diabetes (T1DM). Serum ADMA concentrations were measured in 196 individuals with T1DM. Twenty-six tag SNPs in the DDAH1 gene and 10 in the DDAH2 gene were genotyped. One SNP in the DDAH1 gene (rs3738111) and one in the DDAH2 gene (rs805293) showed a correlation with serum ADMA levels; however, neither survived correction for multiple testing. We found limited evidence that genetic polymorphisms in DDAH genes influence serum ADMA levels in individuals with T1DM. This differs to findings in T2DM and may be due to underlying differences in the cohorts or to fundamental differences in the pathogenesis of the two types of diabetes.

    Original languageEnglish
    Pages (from-to)195-198
    Number of pages4
    JournalJournal of Diabetes and Its Complications
    Volume26
    Issue number3
    DOIs
    Publication statusPublished - 2012

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