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Am J Cardiol. 2007 Jul 15;100(2):234-9. Epub 2007 May 30.

Relation of increased leptin concentrations to history of myocardial infarction and stroke in the United States population.

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Division of Cardiovascular Diseases, Department of Internal Medicine, Mayo Clinic and Foundation, Rochester, Minnesota, USA


Leptin, an adipose tissue-derived hormone, has been linked to cardiovascular outcomes; however, data are limited in the United States population, especially women. To assess the association between leptin concentrations and history of myocardial infarction (MI) and stroke independently of traditional cardiovascular risk factors, we analyzed data from 6,239 subjects (mean age 47 years; 3,336 women) with measurements of serum leptin and full assessment of cardiovascular risk factors from the National Health and Nutrition Examination Survey (NHANES) III. Logistic regression was used to estimate the cross-sectional association of leptin concentrations (highest quartile versus lowest quartile) and history of MI, stroke, and the composite end point of MI or stroke (MI/stroke). Gender-specific models of leptin were adjusted for age, race, dyslipidemia, hypertension, diabetes, smoking, and obesity status. There were 212 men with MI/stroke (5.4%), 154 with MI (4.1%), and 82 with stroke (1.7%). There were 135 women with MI/stroke (2.6%), 74 with MI (1.5%), and 78 with stroke (1.4%). In multivariate analysis, high leptin level was significantly and independently associated with MI/stroke in men (odds ratio [OR] 2.41, 95% confidence interval [CI] 1.20 to 4.93) and women (OR 4.26, 95% CI 1.75 to 10.73); with MI in men (OR 3.16, 95% CI 1.40 to 7.37) and women (OR 3.96, 95% CI 1.29 to 12.72), and with stroke in women (OR 3.20, 95% CI 1.04 to 10.54) but not in men (OR 1.37, 95% CI 0.38 to 3.88). In conclusion, in the United States population, increased leptin concentrations are significantly associated with MI/stroke in men and women independently of traditional cardiovascular risk factors and obesity status.

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