CANDIDATE GENE ANALYSIS IN DIABETIC RETINOPATHY: ENOS GENE

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TAVAKOLI BAZAZ J.; PRAVICA V.; HUTCHINSON I.V.; BOULTON A.J.M.

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Journal: Iranian Journal of Diabetes and Metabolism Year:2004 | Volume:4 | Issue:1 Page(s): 1-8

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Title

CANDIDATE GENE ANALYSIS IN DIABETIC RETINOPATHY: ENOS GENE

Author(s)

TAVAKOLI BAZAZ J. | PRAVICA V. | HUTCHINSON I.V. | BOULTON A.J.M. | Issue Writer Certificate

Keywords

GENETICSQ3

DIABETESQ2

GENOTYPEQ2

PHENOTYPEQ3

POLYMORPHISMQ2

RETINOPATHYQ3

Abstract

Background: Due to homeostatic and regulatory potentials of nitric oxide (NO) in vascular physiology, regulatory systems that determine NO bio-synthesis and bioavailability have been the subject of extensive research in molecular medicine. In the field of vascular system pathophysiology, endothelial nitric oxide synthase (eNOS) which is the major producer and regulator of NO in vascular tissues has received the most attention. Impairment of NO bioavailability (NO quenching) is a common feature in poorly controlled diabetics due to increased catabolism and decreased production of NO. Such impairment in severe forms could end to vasodilation breakdown in peripheral tissues (mainly in skeletal muscles) and defective regional blood flow, that in turn disturb insulin-dependent glucose uptake ensuing insulin resistance state. Methods: The phenotypic impact of an eNOS gene POLYMORPHISM at position 786*C/T (that its functionality has been revealed already) on genetic propensity to diabetic RETINOPATHY is evaluated in a British-Caucasian population with type 1 DIABETES (T1DM). Results: In contrast to GENOTYPEs, there was a significant difference in distribution of allele frequencies between T1DM patients (n= 249) and healthy controls (n= 104) (p= 0/036), that may imply eNOS and/or NO involvement in development of T1DM. Most notably a significant difference also was evident in allele frequency between retinopaths (n= 134) and healthy controls (p= 0/02). No significant difference was detected when the GENOTYPE/allele frequencies were compared between retinopaths (n= 134) and non-retinopaths diabetics (n= 115) (p=NS). Conclusion: Our data is compatible with previous studies which demonstrated that allele C of eNOS 786*C/T POLYMORPHISM is associated with increased HbA1c levels. By emphasizing the phenotypic and prognostic value of the abovementioned POLYMORPHISM, our data calls for further investigations to find out whether this POLYMORPHISM can be employed as a genetic marker in clinical medicine to recognize high-risk diabetics at the time of DIABETES onset/diagnosis.

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APA: Copy

TAVAKOLI BAZAZ, J., PRAVICA, V., HUTCHINSON, I.V., & BOULTON, A.J.M.. (2004). CANDIDATE GENE ANALYSIS IN DIABETIC RETINOPATHY: ENOS GENE . JOURNAL OF DIABETES AND METABOLIC DISORDERS, 4(1), 1-8. SID. https://sid.ir/paper/53966/en

Vancouver: Copy

TAVAKOLI BAZAZ J., PRAVICA V., HUTCHINSON I.V., BOULTON A.J.M.. CANDIDATE GENE ANALYSIS IN DIABETIC RETINOPATHY: ENOS GENE . JOURNAL OF DIABETES AND METABOLIC DISORDERS[Internet]. 2004;4(1):1-8. Available from: https://sid.ir/paper/53966/en

IEEE: Copy

J. TAVAKOLI BAZAZ, V. PRAVICA, I.V. HUTCHINSON, and A.J.M. BOULTON, “CANDIDATE GENE ANALYSIS IN DIABETIC RETINOPATHY: ENOS GENE ,” JOURNAL OF DIABETES AND METABOLIC DISORDERS, vol. 4, no. 1, pp. 1–8, 2004, [Online]. Available: https://sid.ir/paper/53966/en

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