Key result
NIP-121 was approximately 10 times more potent than cromakalim in shortening action potential duration and decreasing contractile force in isolated guinea pig ventricular myocardium.
Why the study?
Does NIP-121 shorten action potential duration and decrease contractile force compared to cromakalim in isolated guinea pig ventricular myocardium?
Population
Isolated guinea pig right ventricular free wall and papillary muscle preparations
Comparison
NIP-121 (a novel potassium channel opener) vs Cromakalim
Design
Preclinical
Authors
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No immediate clinical implications; leaves open translation of NIP-121 potency from guinea pig models.
Does NIP-121 shorten action potential duration and decrease contractile force compared to cromakalim in isolated guinea pig ventricular myocardium?
NIP-121 is a novel potassium channel opener that is approximately 10 times more potent than cromakalim in altering cardiac action potential and contractility in preclinical models.
Shigenobu et al. (1991) studied this question. NIP-121 vs. cromakalim was evaluated on Action potential duration shortening and contractile force decrease. NIP-121 was approximately 10 times more potent than cromakalim in shortening action potential duration and decreasing contractile force in isolated guinea pig ventricular myocardium.
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