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A novel CK isoenzyme migrating between CK-MB and CK-BB
Authors:M A Pesce  S H Bodourian
Abstract:A CK isoenzyme migrating between CK-MB and CK-BB was detected in the serum of three patients with metastatic prostatic carcinoma. CK-BB was detected in the serum of all three patients and mitochondrial CK in two of the patients. Total CK activity was either normal or elevated, and the atypical CK isoenzyme, CK-BB and the mitochondrial CK isoenzyme were present in serum for up to 1.5 months. This atypical CK isoenzyme was not CK-MB, an albumin-ligand complex, or adenylate kinase, and was not bound to an immunoglobulin. This atypical CK isoenzyme did not contain immunologically normal CK-M subunits but had some CK-B subunits and could be a variant CK-BB or CK-MB isoenzyme. Its appearance in serum could be indicative of a serious illness.
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