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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
The role of lactate shuttle in ischemic-reperfusion injury of rat heart adapted to chronic hypoxia
 Kolář, David ; Žurmanová, Jitka (advisor) ; Nováková, Olga (referee)
Adaptation to hypoxia is a well-known phenomenon increasing myocardial resistance to ischemia-reperfusion (I/R) injury as an appropriate physical exercise which improves the contractile function of the heart. Lactate is a major energy substrate for the heart muscle during physical activity and hypoxia. The metabolism of lactate was and still is associated with muscle fatigue, but in the last decades it has been considered its significant modulating function of metabolism during exercise at cellular level and whole organism level. It has been shown that its effects might be similar to the effects of hypoxia and its oxidized form, pyruvate, has the cardioprotective effects. The aim of this study was to compare the expression of LDHA and LDHB isoforms between left and right ventricle in the cardioprotective scheme of adaptation to hypoxia. Another objective/goal was to determine the left ventricular response to I/R insult in the perfused heart model adapted to hypoxia compared with the normoxic controls on/at the expression level of both LDH isoforms. Our results showed differences in the LDHA expression in the left and right ventricle and an increased response of the left ventricle to I/R insult in rats adapted to hypoxia which is reflected at the expression level of both isoforms. Key words: heart,...
Detailed record
The role of lactate shuttle in ischemic-reperfusion injury of rat heart adapted to chronic hypoxia
 Kolář, David ; Žurmanová, Jitka (advisor) ; Nováková, Olga (referee)
Adaptation to hypoxia is a well-known phenomenon increasing myocardial resistance to ischemia-reperfusion (I/R) injury as an appropriate physical exercise which improves the contractile function of the heart. Lactate is a major energy substrate for the heart muscle during physical activity and hypoxia. The metabolism of lactate was and still is associated with muscle fatigue, but in the last decades it has been considered its significant modulating function of metabolism during exercise at cellular level and whole organism level. It has been shown that its effects might be similar to the effects of hypoxia and its oxidized form, pyruvate, has the cardioprotective effects. The aim of this study was to compare the expression of LDHA and LDHB isoforms between left and right ventricle in the cardioprotective scheme of adaptation to hypoxia. Another objective/goal was to determine the left ventricular response to I/R insult in the perfused heart model adapted to hypoxia compared with the normoxic controls on/at the expression level of both LDH isoforms. Our results showed differences in the LDHA expression in the left and right ventricle and an increased response of the left ventricle to I/R insult in rats adapted to hypoxia which is reflected at the expression level of both isoforms. Key words: heart,...
Detailed record

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