Experimental substantiation of the possibility of using the cytochemical parameters of peripheral blood to assess the functional state of the organism of the pilot

The activity of succinate (mitochondrial), lactate, α-glycerophosphate, glucose-6-phosphate peripheral blood lymphocytes in rats under the conditions of modeling acute and chronic gravitational stress was studied by quantitative spectrophotometry of cytochemical reaction products to reveal the localization of oxidative enzymes. The dynamics of morphofunctional transformations is determined, the severity of which depends on the duration of the effect (the rotation time of the animals on the centrifuge). For acute gravitational stress, changes in the activity of mitochondrial succinate dehydrogenase are characteristic, and in the various stages of chronic gravitational stress, glycolysis (increase in lactate dehydrogenase and α-glycerophosphate dehydrogenase activity) and plastic metabolism (increase in glucose-6-fosfata dehydrogenase activity) are characteristic. These changes are explained by the inclusion of neurohumoral regulatory mechanisms that ensure synchronization of oxidative metabolic processes in the cells of organs of various body systems under unfavorable conditions of their functioning. Significant correlation links between the activity of lymphocyte enzymes with the same indices of neurons of the celiac sympathetic node, adenocytes of the cortical and medulla of the adrenal glands have been established. This suggests that the activity of lymphocyte enzymes can be used as indirect indicators of the processes occurring in the organs of the sipato-adrenomedular and pituitary-adrenocortical systems under conditions of acute and chronic gravitational stress.