Journal
SLEEP
Volume 30, Issue 4, Pages 531-533Publisher
OXFORD UNIV PRESS INC
DOI: 10.1093/sleep/30.4.531
Keywords
sleep apnea; hypertension; angiotensin converting enzyme; gene
Categories
Funding
- NCRR NIH HHS [RR03655] Funding Source: Medline
- NHLBI NIH HHS [K08 HL081385, HL046380, HL081385, HL071515, K08 HL081385-03] Funding Source: Medline
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Study Objectives: To identify the role of polymorphisms in the angiotensin-converting enzyme (ACE) gene in modulating susceptibility to hypertension in sleep apnea. Design: Observational cross-sectional study. Participants: Nine hundred seventy-two participants of the Cleveland Family Study who underwent home sleep studies, blood pressure assessments, and genotyping. Results: After controlling for age, sex, race, and obesity, hypertension risk was reduced in participants who possess the ACE deletion (D) polymorphism with an odds ratio = 0.63 (95% confidence interval: 0.41-0.96) comparing those with 2 versus no ID alleles. In analyses stratified by apnea severity, the protective effect of the D allele was most evident in those with severe apnea. Among subjects with severe apnea, the odds ratios for hypertension were 0.47 (0.22-1.00) for 1 D allele and 0.57 (0.26-1.24) for 2 D alleles. Conclusions: The ACE deletion allele may protect against hypertension in the setting of obstructive sleep apnea. Further research into the potential role of angiotensin in modulating the hypertensive effect of sleep apnea is needed.
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