Biopolym. Cell. 2001; 17(1):36-42.
http://dx.doi.org/10.7124/bc.00059C
Structure and Function of Biopolymers
Staphylococcus toxin modulates the regulatory mechanisms of contraction-relaxation of ring smooth muscles of the thick intestine
1Davidovskaya T. L., 1Tsimbalyuk O. V., 1Miroshnichenko M. S.
  1. Taras Shevchenko National University of Kyiv
    64, Volodymyrska Str., Kyiv, Ukraine, 01033

Abstract

The influence of Staphylococcus toxin (ST) of concentration 1,6 · 10–6 –1,6 · 10–1 Lh on the contractile activity of thin (150–200 pm) smooth muscle stripes from guinea pig caecum caused by acetylcholine or high potassium solution and caffeine has been studied. It has been found that ST changes the permeability of L-type Ca channels dose-dependently and inhibits the caffeine-induced contraction of muscle stripes. ST modulates the realisation of a neurotransmitter signal along the electrical and pharma-comechanical ways of excitation-contraction coupling in smooth muscle cells.
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