Purpose: The purpose of this study was to identify the association of AGT M235T gene variations and hypertension for various race-ethnicity groups and the associated risk factors for the prevention of hypertension.
Method/Results: Preliminary analyses included 7607 cases and 9673 controls associating AGT M235T with hypertension from 30 case-control studies published within the last 18 years. The gene mutation variations (MT and TT subtypes) in Asians (70.8-100%) were higher than Caucasians (62.0-79.0%) in the world, for control and case groups. For validation, pollution indicators were checked and shown worse in Asia than other countries in recent years. For lifestyle related meta-analyses, smoking (11 studies, 2155 cases, 3518 controls, RR=1.14, 95% Confidence Interval =0.93-1.40), alcohol intake (5 studies, 1076 cases, 2280 controls, RR=0.82, 95% CI=0.60-1.13), and physical inactivity (3 studies, 470 cases, 2021 controls, RR=0.97, 95% CI=0.86-1.09) were pooled for meta-analyses. For association of AGT235 gene variations, genotype MM (16.9% cases, 19.1% controls) was protective against hypertension for all populations combined (RR=0.83, 95% CI=0.73-0.94, p=0.0026).
Conclusion: Future research is needed to investigate the interactions between epigenetic risk factors and AGT gene variations for the population heath across the world in the prevention of hypertension.
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