Polymorphism (-499C/G) in promoter may act as a protective factor for metabolic syndrome: A case-control study in Azar-Cohort population.

Objective: Globally developing metabolic syndrome (MetS) prevalence as a major health problem can be related to multiple factors of genetic and environmental. Dimethylaminohydrolase 2 (DDAH2) is the main enzyme implicated in the cardiovascular system, which regulates the nitric oxide pathway. This study investigated the association of polymorphism -499C/G (rs805305) with the risk of MetS among the Azar-Cohort population.

Methods: The occurrence of SNP rs805305 in the gene was tested using the PCR-RFLP method in 332 MetS cases and 294 healthy controls. Afterward, the association of the allele and genotypes with the risk of MetS and its components were examined.

Results: The G allele and GC genotype were significantly associated with a reduced risk of MetS ( ≤ 0.001). Also, the dominant genetic model (GG+GC) significantly decreased the risk of MetS ( = 0.001), however, in sex subtypes MetS risk was significantly reduced in males before and in females after adjustment for age ( ≤ 0.02).

Conclusion: The -499C/G polymorphism of may play a protective role and reduce MetS risk among the Azar-Cohort population.