PMID- 18022309 OWN - NLM STAT- MEDLINE DCOM- 20080229 LR - 20181201 IS - 0300-483X (Print) IS - 0300-483X (Linking) VI - 243 IP - 1-2 DP - 2008 Jan 14 TI - Pentoxifylline prevents the meglumine antimonate-induced renal toxicity in rats, but not that induced by the inorganic antimony pentachloride. PG - 66-74 AB - Tumor necrosis factor-alpha (TNF-alpha) is a mediator of inflammation and has an important role in human and experimental renal diseases. Pentoxifylline (PTX) has been shown to inhibit cytokine synthesis, including TNF-alpha. The aim of the present study was to examine the effect of PTX on meglumine antimonate (Sb(V)) and antimony pentachloride (SbCl(5))-induced renal toxicity in rats. Sixty Wistar rats were divided into six groups according to the treatment employed over the period of 7 days: group I-saline (NaCl 0.9%); group II-PTX plus saline; group III-meglumine antimonate (Sb(V)) plus saline; group IV-meglumine antimonate (Sb(V)) plus PTX; group V-SbCl(5) plus saline; group VI-SbCl(5) with PTX. The animals' urinary concentration ability was evaluated before and after the end of the treatment. Urine and blood osmolality, sodium and creatinine concentration, and urine volume per minute (V) were determined. Creatinine clearance (CrCl), fractional sodium excretion (FE(Na)), and urine to plasma osmolality ratio (U/P osm) were calculated. TNF-alpha concentration in blood was assessed. On the seventh day, the animals were sacrificed and their kidneys were submitted to histological analysis. The meglumine antimonate (Sb(V))-treated animals showed an impaired renal capacity to concentrate urine, with low values of the ratio U/P osm, reduction in CrCl, and an increment in TNF-alpha serum levels. PTX associated with meglumine antimonate (Sb(V)) reduced TNF-alpha serum levels and was effective in preventing renal functional alterations. Rats treated with SbCl(5) showed functional and histopathologic alterations compatible with acute tubular necrosis, and treatment with PTX did not prevent SbCl(5)-induced nephrotoxicity. PTX was effective in preventing renal functional alterations induced by meglumine antimonate (Sb(V)) in rats. FAU - de Moura, Flavio Jose Dutra AU - de Moura FJ AD - Laboratory of Nephrology, Clinical Medicine, Faculty of Medicine, University of Brasilia, 70.910-900 Brasilia, DF, Brazil. FAU - Leal, Pushkin Pires AU - Leal PP FAU - de Souza Furtado, Rogerio AU - de Souza Furtado R FAU - Muniz-Junqueira, Maria Imaculada AU - Muniz-Junqueira MI FAU - Veiga, Joel Paulo Russomano AU - Veiga JP LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20071007 PL - Ireland TA - Toxicology JT - Toxicology JID - 0361055 RN - 0 (Antiprotozoal Agents) RN - 0 (Chlorides) RN - 0 (Organometallic Compounds) RN - 0 (Phosphodiesterase Inhibitors) RN - 0 (Tumor Necrosis Factor-alpha) RN - 0S9308207L (antimony pentachloride) RN - 6HG8UB2MUY (Meglumine) RN - 75G4TW236W (Meglumine Antimoniate) RN - 9IT35J3UV3 (Antimony) RN - SD6QCT3TSU (Pentoxifylline) SB - IM MH - Animals MH - Antimony/*toxicity MH - Antiprotozoal Agents/*toxicity MH - Chlorides/*toxicity MH - Dose-Response Relationship, Drug MH - *Kidney Diseases/chemically induced/pathology/prevention & control MH - Kidney Function Tests MH - Leishmaniasis/drug therapy MH - Male MH - Meglumine/*toxicity MH - Meglumine Antimoniate MH - Organometallic Compounds/*toxicity MH - Pentoxifylline/administration & dosage/pharmacology/*therapeutic use MH - Phosphodiesterase Inhibitors/administration & dosage/pharmacology/*therapeutic use MH - Rats MH - Rats, Wistar MH - Tumor Necrosis Factor-alpha/antagonists & inhibitors EDAT- 2007/11/21 09:00 MHDA- 2008/03/01 09:00 CRDT- 2007/11/21 09:00 PHST- 2007/06/24 00:00 [received] PHST- 2007/09/06 00:00 [revised] PHST- 2007/09/24 00:00 [accepted] PHST- 2007/11/21 09:00 [pubmed] PHST- 2008/03/01 09:00 [medline] PHST- 2007/11/21 09:00 [entrez] AID - S0300-483X(07)00669-5 [pii] AID - 10.1016/j.tox.2007.09.032 [doi] PST - ppublish SO - Toxicology. 2008 Jan 14;243(1-2):66-74. doi: 10.1016/j.tox.2007.09.032. Epub 2007 Oct 7.