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[Polymorphic variant of MnSOD A16V and risk of diabetic retinopathy]

S F Haghighi, Z Salehi, M R Sabouri

    Molekuliarnaia Biologiia
    |April 29, 2015
    PubMed

    Insights

    The Manganese Superoxide Dismutase (MnSOD) A16V polymorphism is linked to an increased risk of Diabetic Retinopathy in northern Iran. This genetic factor may contribute to the development of this diabetes complication.

    Area of Science:

    • Genetics and Molecular Biology
    • Ophthalmology
    • Endocrinology

    Context:

    • Diabetic retinopathy is a leading cause of blindness globally, stemming from diabetes complications.
    • Oxidative stress is a significant factor in the microvascular damage seen in diabetes.
    • Manganese superoxide dismutase (MnSOD) is a crucial mitochondrial enzyme involved in cellular defense against oxidative stress.

    Purpose:

    • To investigate the association between the MnSOD A16V (C47T) gene polymorphism and Diabetic Retinopathy in a northern Iranian population.
    • To determine if specific MnSOD genotypes influence susceptibility to Diabetic Retinopathy.

    Summary:

    • This study analyzed 140 Diabetic Retinopathy patients and 140 healthy controls using PCR-RFLP to genotype the MnSOD A16V polymorphism.
    • A significantly higher frequency of the AV genotype was found in Diabetic Retinopathy patients compared to controls (OR = 6.94, P<0.0001).
    • Genotype frequencies differed significantly between cases and controls, with AA, AV, and VW genotypes showing distinct prevalence.

    Impact:

    • The findings suggest a potential genetic predisposition to Diabetic Retinopathy associated with the MnSOD A16V polymorphism in the studied Iranian population.
    • Further large-scale population studies are warranted to confirm this association and elucidate the role of MnSOD in Diabetic Retinopathy pathogenesis.
    • This research contributes to understanding the genetic underpinnings of diabetic microvascular complications.

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