Front Public Health. 2013 May 24;1:16. doi: 10.3389/fpubh.2013.00016. eCollection 2013.
Associations of adiponectin and leptin with incident coronary heart disease and ischemic stroke in african americans: the jackson heart study.
Frontiers in public health
Aurelian Bidulescu, Jiankang Liu, Zhimin Chen, Demarc A Hickson, Solomon K Musani, Tandaw E Samdarshi, Ervin R Fox, Herman A Taylor, Gary H Gibbons
Affiliations
Affiliations
- Department of Community Health and Preventive Medicine, Morehouse School of Medicine Atlanta, GA, USA.
- Department of Medicine, University of Mississippi Medical Center Jackson, MS, USA.
- Rural Health Research Center, University of South Carolina Columbia, SC, USA.
- Department of Medicine, University of Mississippi Medical Center Jackson, MS, USA ; School of Health Sciences, Jackson State University Jackson, MS, USA.
- National Heart Lung and Blood Institute, National Institutes of Health Bethesda, MD, USA.
PMID: 24350185
PMCID: PMC3854845 DOI: 10.3389/fpubh.2013.00016
Abstract
BACKGROUND: Because the predictive significance of previously reported racial differences in leptin and adiponectin levels remains unclear, we assessed the prospective association of these adipokines with the risk of cardiovascular disease (CVD) events in African Americans, a population with a high prevalence of cardiometabolic risk factors.
METHODS: Serum specimens from 4,571 Jackson Heart Study participants without prevalent CVD at baseline examination (2000-2004) were analyzed for adiponectin and leptin levels. Cox proportional hazard regression models were used to estimate the associations of the two adipokines with incident coronary heart disease (CHD) and incident ischemic stroke.
RESULTS: During 6.2 years average of follow-up, 98 incident CHD and 87 incident ischemic stroke events were documented. Among study participants (64% women; mean age 54 ± 13 years), the mean (standard deviation, SD) was 6.04 (4.32) μg/mL in women and 4.03 (3.14) μg/mL in men for adiponectin and 37.35 (23.90) ng/mL in women and 11.03 (10.05) ng/mL in men for leptin. After multivariable adjustment that included age, body mass index, high-density lipoprotein cholesterol, triglycerides, C-reactive protein, insulin resistance by homeostasis model assessment for insulin resistance, systolic blood pressure, hypertension medication, smoking, and physical activity, adiponectin was directly associated in women with incident stroke, HR = 1.41 (1.04-1.91) per one SD increase (p = 0.03), but not in men (p = 0.42). It was not associated with incident CHD in women or men. Leptin was not associated with incident CHD or incident stroke.
CONCLUSION: In the largest community-based African American cohort, adiponectin was associated among women with a higher risk of incident stroke. Whether adiponectin harbors harmful properties, or it is produced in response to vascular inflammation to counter the atherosclerotic process, or the putative "adiponectin resistance" phenomenon acts, should be further assessed.
Keywords: African Americans; adiponectin; cardiovascular events; cohort study; leptin; minorities; stroke
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