alexa Leptin increase is associated with markers of the hemostatic system in obese healthy women.
Infectious Diseases

Infectious Diseases

Journal of AIDS & Clinical Research

Author(s): Guagnano MT, Romano M, Falco A, Nutini M, Marinopiccoli M, , Guagnano MT, Romano M, Falco A, Nutini M, Marinopiccoli M,

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Abstract BACKGROUND: Leptin, a hormone secreted by the adipose tissue, might be a link between obesity and increased morbidity for cardiovascular disease. Leptin exerts proinflammatory, pro-angiogenic actions by activating a specific receptor (Ob-Rb) which is expressed in human endothelial cells. Thus, a link may exist between leptin expression and endothelial dysfunction. OBJECTIVES: We sought to determine whether in obese women there is a correlation between leptin levels, endothelial perturbation and coagulative activation. METHODS: Circulating levels of leptin, von Willebrand Factor (VWF), factor (F)VIIa, prothrombin fragment 1 + 2 (F1+2), were measured in 51 non-diabetic, obese women and in 51 normal-weight subjects, using immunoenzymatic assays. RESULTS: Obese women had significantly higher levels of leptin, VWF, FVIIa, F1+2 compared with healthy women. Simple correlation coefficients showed significant correlation between leptin and either VWF, FVIIa, or F1+2 concentrations. A multiple linear regression analysis, performed to quantify further the relationship between leptin levels and the above-mentioned variables as well as the inflammatory marker C-reactive protein (CRP) and including age, body mass index (BMI), waist-hip ratio (WHR) and lipid parameters as potential confounders, revealed that only FVIIa and VWF were independently related to leptin levels. Reduction in adipose tissue after weight loss resulted in a decrease in both circulating leptin and endothelial and coagulative activation markers. CONCLUSIONS: We suggest that leptin might have pro-atherogenic effects in vivo, with a mechanism involving endothelial cell activation.
This article was published in J Thromb Haemost and referenced in Journal of AIDS & Clinical Research

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