[Activity of carboxylic esterases and their isoenzymes in the blood serum in ischemic heart disease].

An examination was conducted of 257 patients with ischemic heart disease and 134 practically healthy individuals. Total esterase activity decreases with age in healthy individuals. In patients with ischemic heart disease, total esterase activity as well as the activity of all six isoenzymes is diminished. Total esterase activity is lower in practically healthy young persons whose parents have ischemic heart disease than in healthy persons of the same age whose heredity is not aggravated by ischemic heart disease. Additional isoenzymes (cholinesterases) were detected in some patients suffering from ischemic heart disease and with aggravating heredity.