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Defective mitochondrial biogenesis: a hallmark of the high cardiovascular risk in the metabolic syndrome?

  • 작성자한진
  • 작성일2007-04-05 17:39:34
  • 조회수2963
  • 첨부파일첨부파일
Circ Res. 2007 Mar 30;100(6):795-806. Related Articles, Links Defective mitochondrial biogenesis: a hallmark of the high cardiovascular risk in the metabolic syndrome? Nisoli E, Clementi E, Carruba MO, Moncada S. Department of Pharmacology, Chemotherapy and Medical Toxicology, School of Medicine, Milan University, Milan, Italy. enzo.nisoli@unimi.it The metabolic syndrome is a group of risk factors of metabolic origin that are accompanied by increased risk for type 2 diabetes mellitus and cardiovascular disease. These risk factors include atherogenic dyslipidemia, elevated blood pressure and plasma glucose, and a prothrombotic and proinflammatory state. The condition is progressive and is exacerbated by physical inactivity, advancing age, hormonal imbalance, and genetic predisposition. The metabolic syndrome is a particularly challenging clinical condition because its complex molecular basis is still largely undefined. Impaired cell metabolism has, however, been suggested as a relevant pathophysiological process underlying several clinical features of the syndrome. In particular, defective oxidative metabolism seems to be involved in visceral fat gain and in the development of insulin resistance in skeletal muscle. This suggests that mitochondrial function may be impaired in the metabolic syndrome and, thus, in the consequent cardiovascular disease. We have recently found that mitochondrial biogenesis and function are enhanced by nitric oxide in various cell types and tissues, including cardiac muscle. Increasing evidence suggests that this mediator acts as a metabolic sensor in cardiomyocytes. This implies that a defective production of nitric oxide might be linked to dysfunction of the cardiomyocyte metabolism. Here we summarize some recent findings and propose a hypothesis for the high cardiovascular risk linked to the metabolic syndrome.
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