Porównanie aktywności esterazy aspirynowej i cholinesterazy w grupach osób zdrowych i chorych
Comparison of Aspirin Esterase and Cholinesterase Activity in Groups of Healthy and Sick Persons

Summary/Abstract: Aspirin esterase (EC 3.1.1.55) is an enzyme that catalyzes the hydrolysis of aspirin (acetylsalicylic acid) to salicylic acid and acetic acid. Aspirin esterase is present in the liver, the plasma and red blood cells. It is widely believed that aspirin esterase is different from carboxylesterase (EC 3.1.1.1 ), arylesterase ( EC 3.1.1.7 ) and cholinesterase (EC 3.1.1.8). Cholinesterase is present in many tissues as well as in the blood. There are many similarities between aspirin esterase and cholinesterase. According to some authors, these two enzymes are identical. The activity of aspirine esterase as well as cholinesterase were measured in 106 serum samples from healthy blood donors and the 120 serum samples of patients, the activity expressed in μkat/L. There are positive correlation between these two enzymes. The activities of aspirin esterase were always approximately 10-times lower than the activity of cholinesterase. The results indicate that there are two different activities, though not necessarily of two different proteins. It may be considered that the enzyme molecule has two independent active sites. Elucidation of the molecular basis of the similarities and differences of these two (?) enzymes will be explained by us in the next future.

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