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Involvement of Calcium Ions in the Activation of Ornithine Decarboxylase by Isoprenaline Evaluated 'in Situ' in the Perfused Rat Heart

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Journal Biochem J
Specialty Biochemistry
Date 1983 Apr 15
PMID 6409100
Citations 1
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Abstract

Ornithine decarboxylase activity evaluated during the perfusion of isolated rat hearts by a method 'in situ' was rapidly increased when the hearts were infused with isoprenaline (isoproterenol). Omission of Ca2+ from the perfusion medium or the administration of verapamil to the perfused hearts decreased the isoprenaline-stimulated ornithine decarboxylase activity, whereas a marked stimulatory effect was registered when the hearts were perfused with the Ca2+ ionophore A23187.

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