4.6 Article

Alcohol intake, hypertension development and mortality in black South Africans

期刊

EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY
卷 23, 期 3, 页码 308-315

出版社

OXFORD UNIV PRESS
DOI: 10.1177/2047487314563447

关键词

Gamma-glutamyltransferase; percentage carbohydrate deficient transferrin; self-reported alcohol intake; hypertension; morbidity; sub-Saharan Africa; cardiovascular disease

资金

  1. South Africa Netherlands Research Programme on Alternatives in Development (SANPAD)
  2. Population Health Research Institute
  3. Roche Diagnostics South Africa
  4. South African Medical Research Council
  5. South African National Research Foundation (NRF) [GUN 2069139, FA2006040700010]
  6. NRF Thuthuka grant

向作者/读者索取更多资源

Background Excessive alcohol intake is a risk factor for cardiovascular disease (CVD) and predicts cardiovascular and all-cause mortality. We determined which alcohol marker (self-reported alcohol intake, gamma-glutamyltransferase (GGT) or percentage carbohydrate deficient transferrin (%CDT)) relates best with mortality and predicts hypertension development over five years in black South Africans. Design This was a longitudinal study as part of the PURE (Prospective Urban and Rural Epidemiology) study in the North West Province, South Africa. Method We included 2010 participants and followed 1471 participants. Over five years, 230 deaths occurred, of which 66 were cardiovascular-related. At enrolment, participants completed questionnaires on alcohol intake (yes, for former and current use; no, for alcohol never used). We measured blood pressure, collected blood samples and measured GGT and %CDT. Results When comparing hazard ratios (HRs) of self-report, GGT and %CDT, we found that only GGT predicted cardiovascular (HR=2.76 (1.49-5.12)) and all-cause mortality (HR=2.47 (1.75-3.47)) and hypertension development ((HR=1.31 (1.06-1.62)). Participants self-reporting yes for alcohol intake had a 30% increased risk of developing hypertension (HR=1.30 (1.07-1.60)) but not an increased risk for mortality. When adding both GGT and self-report in the prediction model for hypertension, only self-reporting of alcohol was significant (HR=1.24 (1.01-1.53)). The alcohol marker, %CDT, did not show any significant association with mortality or hypertension development. Conclusion GGT independently predicted cardiovascular and all-cause mortality, as well as hypertension development in black South Africans. Despite non-specificity to excessive alcohol consumption, GGT may be a useful general marker for hypertension development and mortality, also due to its significant association with self-reported alcohol intake.

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