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Citations to this article

Glomerular prostaglandin and thromboxane synthesis in rat nephrotoxic serum nephritis. Effects on renal hemodynamics.
E A Lianos, … , G A Andres, M J Dunn
E A Lianos, … , G A Andres, M J Dunn
Published October 1, 1983
Citation Information: J Clin Invest. 1983;72(4):1439-1448. https://doi.org/10.1172/JCI111100.
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Research Article Article has an altmetric score of 6

Glomerular prostaglandin and thromboxane synthesis in rat nephrotoxic serum nephritis. Effects on renal hemodynamics.

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Abstract

Glomerular arachidonate cyclooxygenation by isolated rat glomeruli was assessed in vitro in antiglomerular basement membrane (anti-GBM) antibody-induced glomerulonephritis by radioimmunoassay for prostaglandins (PG) and thromboxane. After a single intravenous injection of rabbit anti-rat GBM serum, we observed enhancement of glomerular thromboxane B2 (TxB2) synthesis as early as 2 to 3 h with smaller increments in PGF2 alpha, PGE2 and 6-keto-PGF1 alpha synthetic rates. On day 2 of the disease, the glomerular synthesis of TxB2 and, to a lesser extent, PGF2 alpha and PGE2 remained enhanced, whereas on days 8, 11, and 14, TxB2 was the only prostanoid synthesized at increased rates. Glomerular TxB2 synthesis correlated with the presacrifice 24-h protein excretion. 60 min after intravenous infusion of anti-GMB serum, glomerular filtration rate (GFR) decreased (0.66 +/- 0.04 to 0.44 +/- 0.03 ml/min per 100 g, P less than 0.05), without a significant change in renal plasma flow (RPF): 1.97 +/- 0.23 to 1.80 +/- 0.23 ml/min per 100 g) and without a change in glomerular PG synthetic rates. At 2 h, GFR and RPF reached a nadir (0.25 +/- 0.04 and 1.3 +/- 0.1 ml/min per 100 g, respectively) coinciding with a fivefold increment in glomerular TxB2. By 3 h GFR and RPF partially recovered to 0.43 +/- 0.07 and 1.77 +/- 0.20 ml/min per 100 g, respectively, P less than 0.05, despite further increments in TxB2 synthesis. This recovery of GFR and RPF coincided with increments in vasodilatory PG, (PGE2 and PGI2). The thromboxane synthetase inhibitor OKY-1581 markedly inhibited platelet and glomerular TxB2 synthesis and preserved GFR at 1, 2, and 3 h. Another thromboxane synthetase inhibitor, UK-38485, also completely inhibited platelet and glomerular TxB2 synthesis and prevented decrements of GFR at 2 and 3 h. A cyclooxygenase inhibitor, ibuprofen, inhibited platelet TxB2 and PGE2 synthesis and significantly reduced glomerular PGE2 but not TxB2 synthesis. In the ibuprofen-treated rats, the partial recoveries of GFR and RPF at 3 h were attenuated. The in vitro glomerular TxB2 synthesis correlated inversely with the presacrifice GFR and filtration fraction. These observations indicate that in anti-GBM nephritis there is enhanced synthesis of TxA2 and PG in the glomerulus that mediate changes in renal hemodynamics.

Authors

E A Lianos, G A Andres, M J Dunn

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Citations to this article in year 2011 (1)

Title and authors Publication Year
Changes in extracellular matrix composition regulate cyclooxygenase-2 expression in human mesangial cells
M Alique, L Calleros, A Luengo, M Griera, MÁ Iñiguez, C Punzón, M Fresno, M Rodríguez-Puyol, D Rodríguez-Puyol
American journal of physiology. Cell physiology 2011

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