Dynamics of activity of energy supply enzymes of rat brain against the background of exposure to stress factors

Aim. The aim of this work was to give a review of own studies of dynamics of the activity of energy metabolism enzymes in the brain during postnatal ontogenesis which characterizes the functional relations within the analysers, the destruction of their functions and the impact of adverse environmental factors on the body as well. Methods. The methods for the determination of the activity of energy metabolism enzymes in the brain of animals under the impact of adverse environmental factors and dysfunction of the analysers have been used. Results. It has been stated that the enzyme activity is regionally different in the tissues and sub cellular fractions of the brain depending on the animal species and the degree of the intensity of the stress factors, age and sex of the animal, circadian rhythms, season andmoreover, the resulting changes in the enzyme activity in most casesare irreversible. Conclusions. The data allow the dynamics of the activity of the energy supply enzymes to be considered as a determinant of cell reaction in response to exposure to adverse environmental factors and disturbance of sensory impulsation, which results in temporary increasing in the protection of intracellular energy metabolism through the development of an adaptive brain response.Key words: ontogenesis, brain, analysers, enzymes, environmental factors.