Creatine kinase isoenzymes are an enzyme component, among which MB type is mainly present in myocardial cells. It is also a kind of cardiac marker.
CK MB protein is of great significance in clinical diagnosis. The serum creatine kinase level increases rapidly in various diseases, including muscular atrophy and myocardial infarction. The determination of creatine kinase activity is more reliable than electrocardiogram in the diagnosis of myocardial infarction. In myocardial infarction, creatine kinase increased within six h of onset, peaked at 24 h, and returned to normal within 3-4 days.
The isoenzyme CK-MB of creatine kinase has the highest specificity in diagnosis. Creatine kinase has attracted extensive attention and in-depth research because of its essential physiological function and clinical application value.