Background And Aims: In a previous study, the single-nucleotide polymorphism (SNP) rs9677, mapped in the 3'-UTR of vasoactive intestinal peptide receptor 1 (VPAC1) gene, was found to be associated with type 2 diabetes (T2D) in Caucasian women. Moreover, the CC genotype correlated with a worse glycolipid profile. The objectives of this study were to confirm this correlation and assess the prevalence of coronary artery disease (CAD) in the previously investigated diabetic women after a follow-up of 4.6 years.

Methods And Results: A total of 143 women with T2D, with 53 carrying the CC genotype (age: 71.7 ± 7.4 years, diabetes duration: 17.2 ± 9.9 years) and 90 carrying the CT + TT genotypes (age: 69.4 ± 8.8 years, diabetes duration: 14.3 ± 8.2 years), were followed up for 4.6 ± 1.8 years. At follow-up, the clinical and haematochemical parameters were analysed. Twelve-lead electrocardiography, Doppler echocardiography and the percentage of patients with acute myocardial infarction (AMI) or of those subjected to coronary angioplasty and coronary artery bypass surgery were evaluated. At follow-up, there was no significant difference in terms of the clinical and haematochemical parameters between the two groups. However, despite a significantly increased use of statin therapy, no significant improvement in the LDL cholesterol levels was observed in CC female patients unlike those with CT + TT (P = 0.02). Moreover, the CC female patients presented a significantly higher percentage of echocardiographic abnormalities (P = 0.035), especially left ventricular (LV) diastolic dysfunction (P = 0.04).

Conclusions: The rs9677 CC genotype could be correlated with a reduced response to statin therapy and seems to be involved in diabetes cardiomyopathy in female patients with T2D.

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http://dx.doi.org/10.1016/j.numecd.2015.10.009DOI Listing

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