[Changes in heterogenous neuron populations in the postresuscitation period after heart arrest in rats]

Morphometric examination of neurons of the Vth layer of the sensorimotor cortex and Purkinje's cells in two functionally different parts of the cerebellum was carried out in various periods after resuscitation in rats exposed to 10 or 15-min heart arrest. General regularities and differences in the reaction of heterogenous neuronal populations on ischemia of various duration were detected. The time course of restructuring of the neuronal populations was traced. A relationship between the detected shifts and the rate of neurological resuscitation of the animals was established. Neurons of various compartments of the brain and various types of cells in the heterogenous neuronal populations were found to be characterized by different sensitivity to ischemia.