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The effect of Ca 2+ applied in high concentrations (50 and 300µM) was addressed on the generation of reactive oxygen species in isolated mitochondria from guinea-pig brain. The experiments were performed in the presence of ADP, a very effective inhibitor of mitochondrial permeability transition. Moderate increase in H 2 O 2 release from mitochondria was induced by Ca 2+...
Mitochondrial uptake of calcium in excitotoxicity is associated with subsequent increase in reactive oxygen species (ROS) generation and delayed cellular calcium deregulation in ischemic and neurodegenerative insults. The mechanisms linking mitochondrial calcium uptake and ROS production remain unknown but activation of the mitochondrial permeability transition (mPT) may be one such mechanism. In...
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