Accumulation of 99m-technetium-pyrophosphate and the level of cyclic nucleotides in the myocardium during its adaptation to stress damage

It was shown in experiments on albino rats that their adaptation by a series of "trainings" or a course of treatment with Rhodida rosea extract produced a marked cardioprotective effect during emotional-pain stress. Adaptation of rats to stress factors induced simultaneously regular changes of the cyclic nucleotide content in the myocardium, thus contributing to reduction of the adrenoreactivity of the heart and the degree of the stress damage to the myocardium.