[Change in the physicochemical properties of the cerebral cortical proteins in dying and resuscitation after mechanical asphyxia].
The physicochemical properties of protein postmitochondrial supernatant after gray substance of the brain homogenization undergo changes during clinical death caused by mechanical asphyxia. The shift on the densitogram occurs after protein electrophoresis in polyacrilamide gel. After sedimentation the total concentration of proteins and total activity of lactate dehydrogenase (LDH) decrease. Followiing adsorption on a DEAE-Sephadex A-50 the total fraction of nonadsorbed beta- and gamma-globulins also decreases, and the activity of LDH (3+4+5) isoenzymes falls significantly. Disturbed behavior pattern of proteins in the sedimentation and electrophoretic fields as well as changes in the sorption properties specific for varying times of clinical death, play a certain role in the development of irreversible changes in the gray substance of the brain. The adsorption and sedimentation properties of the proteins return to normal during early postresuscitation period, whereas the electrophoretic mobility of protein fractions in polyacrylamide gel remains unchanged within the first day.
D000818:Animals; D001237:Asphyxia / Q000378:metabolism*; D002540:Cerebral Cortex / Q000378:metabolism*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003643:Death; D004285:Dogs; D004789:Enzyme Activation; D007527:Isoenzymes; D007770:L-Lactate Dehydrogenase / Q000378:metabolism; D009419:Nerve Tissue Proteins / Q000032:analysis*; D012151:Resuscitation
D007527:Isoenzymes; D009419:Nerve Tissue Proteins; D007770:L-Lactate Dehydrogenase
Izmenenie nekotorykh fiziko-khimicheskikh svoĭstv belkov kory golovnogo mozga pri umiranii i ozhivlenii posle mekhanicheskoĭ asfiksii.