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  • Title: A histochemical study about the influence of lytic enzymes on plasma membrane enzyme activities in rat liver and kidney.
    Author: Hardonk MJ, Meskendorp-Haarsma TJ, Koudstaal J.
    Journal: Histochemistry; 1978 Dec 01; 58(3):177-81. PubMed ID: 103867.
    Abstract:
    1. The effect of lipolytic, glycolytic and proteolytic enzymes on the activities of plasma membrane enzyme activities in rat liver and kidney has been investigated by a pretreatment of tissue sections with the lytic enzymes. 2. The action of the proteolytic enzymes causes a very strong decrease of leucyl-beta-naphthylamidase activity, whereas the activities of ATP-ase, 5'-nucleotidase and alkaline phosphatase show a lesser decrease. This indicates a different membrane anchorage of leucyl-beta-naphthylamidase as compared to that of the phosphatases. 3. Treatment with glycolytic enzymes results in a decrease of 5'-nucleotidase and ATP-ase activity, whereas liver alkaline phosphatase and leucyl-beta-naphthylamidase show an increase in activity. 4. Treatment with phospholipase C gives about the same results. The very strong decrease of 5'-nucleotidase activity indicates a great dependence on phospholipids.
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