Key result
Inhibition of Na+/H+ exchange with HOE-694 protected reoxygenated adult rat ventricular cardiomyocytes against hypercontracture and attenuated cytosolic Ca2+ oscillations.
Why the study?
Does Na+/H+ exchange inhibition with HOE-694 prevent hypercontracture in reoxygenated adult rat ventricular cardiomyocytes?
Population
Adult rat ventricular cardiomyocytes incubated in anoxic media at pH 6.4 until pCa <= 5, intracellular pH of…
Comparison
20 microM HOE-694 added upon reoxygenation vs Reoxygenation without HOE-694
Design
Preclinical
Follow-up
10 min
Authors
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Hypothesis-generating for Na+/H+ exchange inhibition in reoxygenation injury; requires in vivo validation before clinical consideration.
Does Na+/H+ exchange inhibition with HOE-694 prevent hypercontracture in reoxygenated adult rat ventricular cardiomyocytes?
Inhibition of Na+/H+ exchange protects against reoxygenation-induced hypercontracture and cytosolic Ca2+ oscillations by prolonging cytosolic acidosis.
Ladilov et al. (1995) studied Anoxia/reoxygenation injury in cardiomyocytes. HOE-694 (Na+/H+ exchange inhibitor) vs. Absence of HOE-694 was evaluated on Hypercontracture, cytosolic Ca2+ oscillations, and intracellular pH recovery. Inhibition of Na+/H+ exchange with HOE-694 protected reoxygenated adult rat ventricular cardiomyocytes against hypercontracture and attenuated cytosolic Ca2+ oscillations.
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