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  • Title: Endothelin and eicosanoid synthesis in cultured mesangial cells.
    Author: Zoja C, Benigni A, Renzi D, Piccinelli A, Perico N, Remuzzi G.
    Journal: Kidney Int; 1990 Mar; 37(3):927-33. PubMed ID: 2179615.
    Abstract:
    We investigated the effect of endothelin on the generation of eicosanoids, which are known to regulate basal and stimulated mesangial cell tone. The results showed that endothelin is a potent stimulus of prostaglandin E2 (PGE2), prostacyclin (PGI2), and thromboxane A2 (TxA2) synthesis by bovine mesangial cells. Percentage increases in eicosanoid synthesis induced by endothelin (10(-10) to 10(-6) M), were 50 to 275% for PGE2, 28 to 168% for PGI2 and 42 to 111% for TxA2, respectively. Endothelin-induced eicosanoid synthesis in mesangial cells was concentration, but not time dependent. Aspirin (500 microM) completely prevented endothelin-induced eicosanoid synthesis. The calcium entry blocker nitrendipine (10(-8) M) failed to inhibit endothelin-induced eicosanoid synthesis. These data suggest that endothelin-induced changes in renal circulation and glomerular function in normal and disease conditions may be modulated by the concomitant stimulation of mesangial eicosanoid synthesis.
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