Differential Impact of Stress Reduction Programs Upon Ambulatory Blood Pressure Among African American Adolescents: Influences of Endothelin-1 Gene and Chronic Stress Exposure

Overview

Journal Int J Hypertens

Publisher Wiley

Date 2011 Dec 14

PMID 22164329

Citations 10

Authors

Mathew J Gregoski

Vernon A Barnes

Martha S Tingen

Yanbin Dong

Haidong Zhu

Frank A Treiber

Affiliations

Soon will be listed here.

Abstract

Stress-activated gene × environment interactions may contribute to individual variability in blood pressure reductions from behavioral interventions. We investigated effects of endothelin-1 (ET-1) LYS198ASN SNP and discriminatory stress exposure upon impact of 12-week behavioral interventions upon ambulatory BP (ABP) among 162 prehypertensive African American adolescents. Following genotyping, completion of questionnaire battery, and 24-hour ABP monitoring, participants were randomized to health education control (HEC), life skills training (LST), or breathing awareness meditation (BAM). Postintervention ABP was obtained. Significant three-way interactions on ABP changes indicated that among ET-1 SNP carriers, the only group to show reductions was BAM from low chronic stress environments. Among ET-1 SNP noncarriers, under low chronic stress exposure, all approaches worked, especially BAM. Among high stress exposure noncarriers, only BAM resulted in reductions. If these preliminary findings are replicated via ancillary analyses of archival databases and then via efficacy trials, selection of behavioral prescriptions for prehypertensives will be edging closer to being guided by individual's underlying genetic and environmental factors incorporating the healthcare model of personalized preventive medicine.

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