creatine kinases

creatine kinases (CKs)

Enzymes that catalyze the bond between creatine and ATP to form creatine phosphate and ADP with the storage of energy in the phosphate bond. Creatine phosphate occurs mainly in muscle and contributes energy required for muscle contraction. CKs are released into the blood from damaged heart and other muscle cells. Creatine kinase estimations are important in the diagnosis and quantification of heart muscle damage or death after CORONARY THROMBOSIS. CK blood levels rise after strenuous exercise or intramuscular injections.