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[Changes in the electrical activity of the cerebral cortex under the combined influence of Cl. perfringens type A toxin and products of Cl. butyricum activity].

A study of the changes of the electrocorticogram (ECoG) and the electrocardiogram (ECG) in combined action of Cl. perfringens, type A, and of the Cl. butyricum broth culture filtrate showed that desynchronization of the cortical electrical activity and its subsequent depression occurred at earlier periods than in the case of isolated administration of Cl. perfringens toxin. The general character of the changes in the cortical rhythmic activity remained the same as in intoxication caused by Cl. butyricum toxin alone. The ECoG and ECG changes occurred at shorter intervals. Cl. butyricum filtrates induced no ECoG and ECG changes. It is supposed that the effect of the products of the Cl. butyricum vital activity consisted in increase in the tissue barrier permeability and, in this connection, in a greater penetration of Cl. perfringens toxin into the tissues, including the central nervous system.