Bulletin of Experimental Biology and Medicine

, Volume 121, Issue 4, pp 374–377 | Cite as

Peculiarities of the effect of parathyroid hormone on the relaxation of rat myocardium

  • T. A. Barabanova
  • S. K. Churina
Biophysics and Biochemistry
  • 18 Downloads

Abstract

Contraction of rat myocardium is recorded in a regime of physiological loading that simulates the function of the intact myocardium. Addition of parathyroid hormone accelerates relaxation of the rat myocardium in the control solution and in a solution containing norepinephrine or high calcium concentrations. In a regime of isometric loading the addition of parathyroid hormone inhibits relaxation. At a low Ca concentration in the medium, parathyroid hormone has no effect on the rate of relaxation.

Key Words

myocardium relaxation parathyroid hormone 

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Copyright information

© Plenum Publishing Corporation 1996

Authors and Affiliations

  • T. A. Barabanova
    • 1
  • S. K. Churina
    • 1
  1. 1.Laboratory of Experimental and Clinical Cardiology, I. P. Pavlov Institute of PhysiologyRussian Acadamy of SciencesSt. Petersburg

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