Simultaneous separation of creatine kinase and lactate dehydrogenase isoenzymes using an electrophoresis method

A specific and sensitive rapid method for simultaneous electrophoretic separation of the blood serum creatine kinase (CK) and lactate dehydrogenase (LDH) isoenzymes is described, fit for rapid diagnosis. A common electrophoresis scheme was used for the separation of both enzymes on the same cellulose acetate plate. Then the isoenzymes were separately detected by their enzymic activities. To detect the enzymic activities at the sites of isoenzymes' localization, the samples were incubated with substrate gel. Optimal conditions for the detection of CK and LDH activities were defined. To illustrate the diagnostic value of the method, the blood serum CK and LDH isoenzymic activities were measured in the patients with acute myocardial infarction and in those operated on for aortocoronary shunting.