Lack of influence of Bendavia on permeability transition pore (PTP) opening in isolated mitochondria subjected to a calcium pulse. A. Mitochondria were energized with glutamate/malate. The positive controls MPG (a radical scavenger), MnTBAP (a manganese superoxide dismutase mimetic), and CsA (cyclosporin-A, a direct PTP blocker) were utilized for comparison with Bendavia. B. Experiments were repeated under de-energized conditions (no glutamate/malate). PTP opening is depicted by mitochondrial swelling, which is reflected by a decrease in the absorbance of light at 520nm. *, P<0.05 (ANOVA).