Journal
CELLULAR AND MOLECULAR LIFE SCIENCES
Volume 66, Issue 22, Pages 3601-3613Publisher
SPRINGER BASEL AG
DOI: 10.1007/s00018-009-0148-6
Keywords
Hypoxia; Contractility; Cardiac output; Nitric oxide; Cardioprotection; Infarct; Oxygen; Adenosine
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Maximal cardiac output is reduced in severe acute hypoxia but also in chronic hypoxia by mechanisms that remain poorly understood. In theory, the reduction of maximal cardiac output could result from: (1) a regulatory response from the central nervous system, (2) reduction of maximal pumping capacity of the heart due to insufficient coronary oxygen delivery prior to the achievement of the normoxic maximal cardiac output, or (3) reduced central command. In this review, we focus on the effects that acute and chronic hypoxia have on the pumping capacity of the heart, particularly on myocardial contractility and the molecular responses elicited by acute and chronic hypoxia in the cardiac myocytes. Special emphasis is put on the cardioprotective effects of chronic hypoxia. (Part of a multi-author review.).
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