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[THE ROLE OF NITRIC OXIDE AND BLOOD RHEOLOGICAL PROPERTIES IN THE MAINTENANCE OF A TEMPERATURE HOMEOSTASIS IN THE BRAIN TISSUE].

The problem of temperature regulation in the brain tissue in conditions of whole body hyperthermia was investigated in experiments on white rats. The received results revealed that the brain is provided with a highly efficient system for temperature autoregulation against the changes in environmental temperature. According to our data the upper limit of this autoregulation (for rats, at least) is about the 450C of environmental temperature. The important role in functioning of this autoregulatory system belongs to Nitric Oxide. It is revealed also that the increase in the index of red cells aggregability may significantly hinder (among other things) maintaining of the temperature homeostasis in the brain.