Malavige LS, Jayawickrama S, Ranasinghe P, Levy JC. Androgen receptor CAG repeat polymorphism is not associated with insulin resistance and diabetes among South Asian males.
BMC Res Notes 2017;
10:685. [PMID:
29202793 PMCID:
PMC5716056 DOI:
10.1186/s13104-017-3035-5]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 11/30/2017] [Indexed: 11/16/2022] Open
Abstract
Objective
To study relationship between androgen receptor (AR) CAG repeat polymorphism, insulin resistance (IR), β-cell function and other clinical/biochemical parameters in ethnic South Asian adults. A case (males with diabetes), control (males without diabetes) study, was conducted and 110 males were invited. Anthropometry, blood pressure and biochemical parameters (fasting Insulin, blood sugar, HbA1c and lipid profile) were measured. IR and β-cell function was calculated. A multiple-linear-regression analysis was performed, using number of AR CAG repeats as the continuous dependent variable.
Results
Sample size was 100 (response rate—90.9%, cases—53). Mean age was 49.6 ± 10.7 years. CAG repeat length did not show any significant correlation with IR or β-cell function. In all males there was a significant correlation between number of AR CAG repeats and systolic blood pressure (r = 0.25; p = 0.016), diastolic blood pressure (r = 0.21; p = 0.045), total cholesterol (r = − 0.22; p = 0.037) and low-density lipoprotein cholesterol (r = − 0.22; p = 0.037). Only total cholesterol (β = − 4.41; p < 0.001) and estrogen (β = 2.25; p = 0.03) were significantly associated with number of AR CAG repeats in regression analysis. In conclusion, AR CAG repeat length did not show any significant correlation with IR or β-cell function. Positive association of AR CAG with systolic and diastolic blood pressure and negative association of AR CAG with total and low-density lipoprotein cholesterol deserves further attention.
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