Characterization of responses to cromakalim and pinacidil in smooth and cardiac muscle by use of selective antagonists.

Abstract

1. In dog isolated coronary artery (precontracted with endothelin, 10 nM) cromakalim (0.1-30 microM) and pinacidil (1-30 microM) produced concentration-dependent vasorelaxant responses. The effects of these compounds could be blocked by glibenclamide (3 microM), phentolamine (30 microM) or alinidine (30 microM) to a similar extent, indicating that both… (More)

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