[Studies of alanine and aspartate transaminases, lactate dehydrogenase and phosphocreatine kinase levels in the cerebrospinal fluid and serum in multiple sclerosis].

In the cerebrospinal fluid and serum the activity was determined of phosphocreatine kinase (CPK), lactic dehydrogenase (LDH), aspartate transaminase (AspAT) and alanine transaminase (AlAT) in 107 cases of multiple sclerosis. The results were compared with those in a control group of neurosis and a highly significant (three times) increase was observed in the activity of CPK and LDH in the cerebrospinal fluid as a result of organic damage to the brain tissue. By chromatographic method direct data were obtained indicating that increased CPK activity in the cerebrospinal fluid was connected with the CK-BB isoenzyme, that is with the cerebral fraction of the enzyme.