{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,15]],"date-time":"2026-09-15T06:03:22Z","timestamp":1789452202956,"version":"build-2803163510"},"reference-count":46,"publisher":"American Physiological Society","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["American Journal of Physiology-Renal Physiology"],"published-print":{"date-parts":[[2006,11]]},"abstract":"<jats:p>Acute renal failure (ARF) in septic patients drastically increases the mortality to 50\u201380%. Sepsis induces several proinflammatory cytokines including tumor necrosis factor-\u03b1 (TNF-\u03b1), a major pathogenetic factor in septic ARF. Pentoxifylline has several functions including downregulation of TNF-\u03b1 and endothelia-dependent vascular relaxation. We hypothesized that pentoxifylline may afford renal protection during endotoxemia either by downregulating TNF-\u03b1 and\/or by improving endothelial function. In wild-type mice, pentoxifylline protected against the fall in glomerular filtration rate (GFR; 105.2 \u00b1 6.6 vs. 50.2 \u00b1 6.6 \u03bcl\/min, P &lt; 0.01) at 16 h of LPS administration (2.5 mg\/kg ip). This renal protective effect of pentoxifylline was associated with an inhibition of the rise in serum TNF-\u03b1 (1.00 \u00b1 0.55 vs. 7.02 \u00b1 2.40 pg\/ml, P &lt; 0.05) and serum IL-1\u03b2 (31.3 \u00b1 3.6 vs. 53.3 \u00b1 5.9 pg\/ml, P &lt; 0.01) induced by LPS. Pentoxifylline also reversed the LPS-related increase in renal iNOS and ICAM-1 and rise in serum nitric oxide (NO). Enhanced red blood cell deformability by pentoxifylline may have increased shear rate and upregulated eNOS. Studies were therefore performed in eNOS knockout mice. The renal protection against endotoxemia with pentoxifylline was again observed as assessed by GFR (119.8 \u00b1 18.0 vs. 44.5 \u00b1 16.2 \u03bcl\/min, P &lt; 0.05) and renal blood flow (0.86 \u00b1 0.08 vs. 0.59 \u00b1 0.05 ml\/min, P &lt; 0.05). Renal vascular resistance significantly decreased with the pentoxifylline (91.0 \u00b1 5.8 vs. 178.0 \u00b1 7.6 mmHg\u00b7ml<jats:sup>\u22121<\/jats:sup>\u00b7min<jats:sup>\u22121<\/jats:sup>, P &lt; 0.01). Thus pentoxifylline, an FDA-approved drug, protects against endotoxemia-related ARF and involves a decrease in serum TNF-\u03b1, IL-1\u03b2, and NO as well as a decrease in renal iNOS and ICAM-1.<\/jats:p>","DOI":"10.1152\/ajprenal.00517.2005","type":"journal-article","created":{"date-parts":[[2006,9,20]],"date-time":"2006-09-20T02:26:56Z","timestamp":1158719216000},"page":"F1090-F1095","source":"Crossref","is-referenced-by-count":43,"title":["Pentoxifylline protects against endotoxin-induced acute renal failure in 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