[Alkaline phosphatase activity and properties in the organs of swine]

The activity and the physico-chemical properties of alkaline phosphatase in the liver, lung, spleen, kidney, intestine, bone and placenta of a total of 24 clinically healthy swine was investigated. Liver, spleen, kidney, lung, bone and placental alkaline phosphatase proved to be thermostable, not sensitive to 1-phenylalanine, but sensitive to 1-arginine, 1-homoarginine and imidazol. Intestinal alkaline phosphatase is thermostable, sensitive to 1-phenylalanine, 1-arginine, 1-homoarginine and imidazol resistant. Urea inhibits more bone alkaline phosphatase and less alkaline phosphatase of the remaining organs. Following electrophoresis on agarose gel alkaline phosphatase of swine liver and kidney is divided into two fractions, while alkaline phosphatase of the remaining organs has only one fraction. Liver alkaline phosphatase is fastest, while kidney alkaline phosphatase is the slowest.