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- W2017356413 abstract "Obesity is associated with increased cardiovascular morbidity and mortality, in part through development of hypertension. Recent observations suggest that the cardiovascular actions of leptin may help explain the link between excess fat mass and cardiovascular diseases. Leptin is an adipocyte-derived hormone that acts in the central nervous system to promote weight loss by decreasing food intake and increasing metabolic rate. Leptin causes a significant increase in overall sympathetic nervous activity, which appears to be due to direct hypothalamic effects and is mediated by neuropeptide systems such as the melanocortin system and corticotropin-releasing hormone. Renal sympathoactivation to leptin is preserved in the presence of obesity, despite resistance to the metabolic effects of leptin. Such selective leptin resistance, in the context of circulating hyperleptinemia, could predispose to obesity-related hypertension. Some in vitro studies have suggested that leptin may have peripheral actions such as endothelium-mediated vasodilation that might oppose sympathetically induced vasoconstriction. However, we and others have shown that leptin does not have direct vasodilator effects in vivo. The fact that chronic leptin administration or overexpression of leptin produces hypertension supports the concept that the hemodynamic actions of leptin are due predominantly to sympathetic activation. Exploration of the sites and mechanisms of leptin resistance should provide novel therapeutic strategies for obesity, insulin resistance, and hypertension." @default.
- W2017356413 created "2016-06-24" @default.
- W2017356413 creator A5007805428 @default.
- W2017356413 creator A5078793399 @default.
- W2017356413 date "2004-01-01" @default.
- W2017356413 modified "2023-09-23" @default.
- W2017356413 title "Leptin and the Cardiovascular System" @default.
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