Effect of calcium entry blockade on the actions of phenylephrine on the taenia of the guinea pig caecum.

Abstract

The interaction between phenylephrine and calcium entry blockers was studied on the taenia of the guinea-pig caecum using the double sucrose gap method. Sustained hyperpolarization, relaxation and attenuation of evoked electrical and mechanical activity were induced by non-cumulative addition of phenylephrine (0.1 to 250 mumol.1-1) for 2 to 4 min. When the… (More)

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