[Types of triglyceridase in the pig aorta].

Triglyceridase activity in porcine aorta extracts was determined by splitting of glycerol-tri-[1-14C]-oleate. On the basis of inhibition of the activity by sodium chloride and protamine sulfate, as well as on the basis of activation by apoproteins of high density lipoproteins, the occurrence of lipoprotein lipase in the aorta was demonstrated. The data obtained suggest that 60--80% of triglyceridase activity is due to lipoprotein lipase.