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A colorimetric method is described for estimation of the adenilate kinase activity in blood serum; the method is based on coupling of adenilate- and creatine kinase reactions and on estimation of the amount of creatine formed. Adenilate kinase activity in blood serum, estimated by the method, was shown to increase 4-fold after removing of tourniquet with subsequent normalization within the next day. The same data were obtained using a spectrophotometric method for estimation of adenilate kinase based on NADP reduction in coupled reactions with hexokinase and glucose-6-phosphate dehydrogenase. An increase in creatine kinase activity in blood serum occurred later on after removing of the tourniquet; it was more distinct (8.5-fold) and maintained longer as compared with the increase in adenilate kinase activity.

It is established that a decrease in glycogen content in liver begins at the early stages of intoxication with LG-63 and progresses with development of intoxication phenomena. Sugar content in liver and blood augments in parallel with decreasing content of glycogen in liver; concentration of ketone bodies and content of bisulfite-binding substances and pyruvic acid in liver also increase. In skeletal muscles, glycogen content was practically without changes; content of sugar, bisulfite-binding substances and pyruvic acid decreased while level of ketone bodies increased. In brain, utilization of ketone bodies decreased and in myocardium, increased.