The content of ammonia, glutamine, dicarboxylic amino acids and GABA was studied in the brain under 1, 2, 4-fold separate and simultaneous effect of hypothermia (19-20 C) and hyperoxia (3 atm.). A two-fold hypothermia of rats is accompanied by a greater increase of ammonia in the brain than a
The content of homocarnosine, GAMA, histidine, glutaminic acid and activity of glutamate decarboxylase were studied in four regions of rats brain: cerebral hemispheres, midbrain, diencephalon and cerebellum, in norm and under hyperoxia. A considerable decrease in the content of homocarnosine, GAMA