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Meta-Analysis
. 2021 Aug;59(4):966-996.
doi: 10.1007/s10528-021-10041-2. Epub 2021 Feb 20.

Association of eNOS and MCP-1 Genetic Variants with Type 2 Diabetes and Diabetic Nephropathy Susceptibility: A Case-Control and Meta-Analysis Study

Affiliations
Meta-Analysis

Association of eNOS and MCP-1 Genetic Variants with Type 2 Diabetes and Diabetic Nephropathy Susceptibility: A Case-Control and Meta-Analysis Study

Priyanka Raina et al. Biochem Genet. 2021 Aug.

Abstract

Type 2 diabetes (T2D) and its secondary complications result from the complex interplay of genetic and environmental factors. To understand the role of these factors on disease susceptibility, the present study was conducted to assess the association of eNOS and MCP-1 variants with T2D and diabetic nephropathy (DN) in two ethnically and geographically different cohorts from North India. A total of 1313 subjects from two cohorts were genotyped for eNOS (rs2070744, rs869109213 and rs1799983) and MCP-1 (rs1024611 and rs3917887) variants. Cohort-I (Punjab) comprised 461 T2D cases (204 T2D with DN and 257 T2D without DN) and 315 healthy controls. Cohort-II (Jammu and Kashmir) included 337 T2D (150 T2D with DN and 187 T2D without DN) and 200 controls. Allele, genotype and haplotype frequencies were compared among the studied participants, and phenotype-genotype interactions were determined. Meta-analysis was performed to investigate the association between the selected variants and disease susceptibility. All three eNOS variants were associated with 1.5-4.0-fold risk of DN in both cohorts. MCP-1 rs1024611 conferred twofold risk towards DN progression in cohort-II, while rs3917887 provided twofold risk for both T2D and DN in both cohorts. eNOS and MCP-1 haplotypes conferred risk for T2D and DN susceptibility. Phenotype-genotype interactions showed significant associations between the studied variants and anthropometric and biochemical parameters. In meta-analysis, all eNOS variants conferred risk towards DN progression, whereas no significant association was observed for MCP-1 rs1024611. We show evidences for an association of eNOS and MCP-1 variants with T2D and DN susceptibility.

Keywords: Diabetic nephropathy; Genetic variant; MCP-1; Type 2 diabetes; eNOS.

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Conflict of interest statement

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.

Figures

Fig. 1
Fig. 1
Genotype–phenotype interaction analysis. Body mass index (BMI), urea, creatinine and random sugar levels were compared between different genotypes of eNOS and MCP-1 gene variants. T bars represent median (in red) and Interquartile Ranges [Data not available for samples: BMI (cohort-I = 15), urea (cohort-I = 181; cohort-II = 1), creatinine (cohort-I = 202; cohort-II = 2) and random sugar (cohort-I = 191; cohort-II = 150)]
Fig. 2
Fig. 2
Forest plot depicting association of eNOS (rs2070744, rs1799983, rs8691092123) and MCP-1 (rs1024611) polymorphisms with DN susceptibility. The area of the square is proportional to the study’s weight. The horizontal line represents a 95% CI. The overall effect is illustrated as diamonds with the lateral points showing CI. Experimental: DN cases; Control: Healthy controls; Events: Allele contrast model (A vs a); W: Weight; CI: Confidence interval. Raina et al_Cohort-I represents Punjab population and Raina et al_Cohort-II represents Jammu and Kashmir population
Fig. 3
Fig. 3
Forest plot depicting association of eNOS (rs2070744, rs1799983, rs8691092123) and MCP-1 (rs1024611) polymorphisms with T2D susceptibility. The area of the square is proportional to the study’s weight. The horizontal line represents a 95% CI. The overall effect is illustrated as diamonds with the lateral points showing CI. Experimental: DN cases; Control: Healthy controls; Events: Allele contrast model (A vs a); W: Weight; CI: Confidence interval. Raina et al_Cohort-I represents Punjab population and Raina et al_Cohort-II represents Jammu and Kashmir population

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