Key result
During hypoxia following rigor development, calcium uptake into mitochondria occurs largely via the Na+/Ca2+ exchanger, whereas on reoxygenation the transporters resume normal directionality.
Population
Isolated single rat cardiomyocytes
Comparison
Hypoxia and reoxygenation in the presence of… vs Control cells without inhibitors
Design
Preclinical
Follow-up
40 min after rigor development
Authors
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No immediate clinical implications; leaves open mitochondrial Ca2+ pathways as therapeutic targets pending in vivo validation.
In isolated rat cardiomyocytes, mitochondrial calcium uptake during hypoxia occurs primarily via the Na+/Ca2+ exchanger rather than the Ca2+ uniporter, with normal directionality resuming upon reoxygenation.
Elinor J. Griffiths (1998) studied Hypoxia and reoxygenation. Clonazepam and ruthenium red vs. Control cells was evaluated on Mitochondrial and cytosolic calcium levels. During hypoxia following rigor development, calcium uptake into mitochondria occurs largely via the Na+/Ca2+ exchanger, whereas on reoxygenation the transporters resume normal directionality.
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