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  • Title: Lipoprotein lipase in rat heart--II. Influence of apolipoproteins and nutritional factors on tri-, di- and monoacylglycerol lipase activities in post-heparin effluents.
    Author: Verine A, Benkirane M, Meignen JM, Boyer J.
    Journal: Comp Biochem Physiol B; 1989; 94(1):19-25. PubMed ID: 2598633.
    Abstract:
    1. The in vitro effects of serum and apolipoproteins (apo), and the influence of the nutritional state of the animals were compared on triacylglycerol lipase (TAGL), diacylglycerol lipase (DAGL) and monoacylglycerol lipase (MAGL) activities in post-heparin effluent from rat heart. 2. Serum and apoC-II stimulated DAGL and MAGL 3-fold less than TAGL, the activity that measures lipoprotein lipase (LPL). 3. The preexisting nutritional state of the heart, that strongly modulated LPL, did not influence DAGL and MAGL. 4. ApoA-I, apoC-I, apoC-III1 and apoC-III2 did not stimulate LPL and counteracted its stimulation by apoC-II; MAGL, and not DAGL, was inhibited by apoA-I and apoC-I, an effect reversed by apoC-II. 5. TAGL, DAGL and MAGL appeared to act as a single physiological unit, although differing in functional details; MAGL displayed the greatest dissimilarity.
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