The effect of micromolar concentrations of ryanodine on the postextrasystolic contraction of the right ventricle papillary muscles of adult rabbits

Abstract

Ryanodine in micromolar concentrations fixe Ca-SR-release channel in some subconductive state and, probably, change speed of Ca2+ movement in the lumen of sarcoplasmic reticulum.

Keywords

• ryanodine
• Ca-SR-release channel
• postextrasystolic potentiation
• subconductive state
• ryanodine receptor
• rabbit myocardium
• papillary muscle