[Paradoxical phenomenon of an increase in smooth muscle tonus of the cardiac arteries as affected by the combined action of vasoconstrictors]. / Paradoksal'nyi fenomen povysheniia tonusa gladkikh myshts arteri i serdtsa pri kombinirovannom deistvii vazokonstriktorov.

ABSTRACT

Removal of any component out of a set of biologically active substances augmented the coronary arteries smooth muscle tone. The phenomenon is discussed in respect to participation of intracellular regulatory mechanisms.