Voprosy meditsinskoi khimii (ISSN 0042-8809)

Effect of total ischemia and 3',5'-cAMP on the activity of the thermostable cytoplasmic inhibitor of Ca2+ ion transport in rat heart mitochondria

   
Turakulov I.Kh., Luchenko M.B., Gaĭnutdinov M.Kh., Abidov A.A.
PubMed Id: 2984845
Year: 1985 vol: 31  issue:1  pages: 85-89
Abstract: Activity of cytoplasmic inhibitor of Ca2+ transport in rat heart mitochondria was studied after total ischemia and incubation of heart homogenates with cAMP. Distinct inactivation of the inhibitor occurred under these conditions. The decrease of the inhibitor activity in ischemic myocardium appears to serve as a compensatory mechanism: 1. pyruvate dehydrogenase and the enzymes of tricarboxylic acid cycle were activated due to increase in Ca2+ concentration in mitochondria, 2. as a result of Ca2+ accumulation in mitochondria the elevated concentration of Ca2+ was decreased in myoplasm, which developed after impairment of plasmatic membranes and of sarcoplasmic reticulum membranes.
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Reference: Turakulov I.Kh., Luchenko M.B., Gaĭnutdinov M.Kh., Abidov A.A., Effect of total ischemia and 3',5'-cAMP on the activity of the thermostable cytoplasmic inhibitor of Ca2+ ion transport in rat heart mitochondria, Voprosy meditsinskoi khimii, 1985, vol: 31(1), 85-89.
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