PMID- 23448493 OWN - NLM STAT- MEDLINE DCOM- 20140319 LR - 20190728 IS - 1873-4286 (Electronic) IS - 1381-6128 (Linking) VI - 19 IP - 32 DP - 2013 TI - Endothelial dysfunction in morbid obesity. PG - 5718-29 AB - Morbid obesity is a chronic multifunctional disease characterized by an accumulation of fat. Epidemiological studies have shown that obesity is associated with cardiovascular and metabolic disorders. Endothelial dysfunction, as defined by an imbalance between relaxing and contractile endothelial factors, plays a central role in the pathogenesis of these cardiometabolic diseases. Diminished bioavailability of nitric oxide (NO) contributes to endothelial dysfunction and impairs endothelium- dependent vasodilatation. But this is not the only mechanism that drives to endothelial dysfunction. Obesity has been associated with a chronic inflammatory process, atherosclerosis, and oxidative stress. Moreover levels of asymmetrical dimethyl-L-arginine (ADMA), an endogenous inhibitor of endothelial nitric oxide synthase (eNOS), are elevated in obesity. On the other hand, increasing prostanoid-dependent vasoconstriction and decreasing vasodilator prostanoids also lead to endothelial dysfunction in obesity. Other mechanisms related to endothelin-1 (ET-1) or endothelium derived hyperpolarizing factor (EDHF) have been proposed. Bariatric surgery (BS) is a safe and effective means to achieve significant weight loss, but its use is limited only to patients with severe obesity including morbid obesity. BS also proved efficient in endothelial dysfunction reduction improving cardiovascular and metabolic comorbidities associated with morbid obesity such as diabetes, coronary artery disease, nonalcoholic fatty liver disease and cancer. This review will provide a brief overview of the mechanisms that link obesity with endothelial dysfunction, and how weight loss is a cornerstone treatment for cardiovascular comorbidities obesity-related. A better understanding of the mechanisms of obesity-induced endothelial dysfunction may help develop new therapeutic strategies to reduce cardiovascular morbidity and mortality. FAU - Mauricio, Maria Dolores AU - Mauricio MD AD - Departamento de Fisiologia, Universidad de Valencia, Av. Blasco Ibanez 15, 46010 Valencia, Spain. FAU - Aldasoro, Martin AU - Aldasoro M FAU - Ortega, Joaquin AU - Ortega J FAU - Vila, Jose Maria AU - Vila JM LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PT - Review PL - United Arab Emirates TA - Curr Pharm Des JT - Current pharmaceutical design JID - 9602487 RN - 31C4KY9ESH (Nitric Oxide) SB - IM MH - Animals MH - Atherosclerosis/etiology/physiopathology MH - Cardiovascular Diseases/*etiology/physiopathology/prevention & control MH - Endothelium, Vascular/*physiopathology MH - Humans MH - Inflammation/etiology/physiopathology MH - Nitric Oxide/metabolism MH - Obesity, Morbid/complications/*physiopathology MH - Oxidative Stress MH - Vasodilation MH - Weight Loss EDAT- 2013/03/02 06:00 MHDA- 2014/03/22 06:00 CRDT- 2013/03/02 06:00 PHST- 2013/01/16 00:00 [received] PHST- 2013/02/18 00:00 [accepted] PHST- 2013/03/02 06:00 [entrez] PHST- 2013/03/02 06:00 [pubmed] PHST- 2014/03/22 06:00 [medline] AID - CPD-EPUB-20130220-16 [pii] AID - 10.2174/1381612811319320007 [doi] PST - ppublish SO - Curr Pharm Des. 2013;19(32):5718-29. doi: 10.2174/1381612811319320007.