title: Interactions among nephrotoxicants: N-(3,5-dichlorophenyl)succinimide and cephaloridine.
abstract: Numerous studies have demonstrated the interactive potential between nephrotoxicants. The purpose of this study was to examine the interactive potential between two model nephrotoxicants, N-(3,5-dichlorophenyl)succinimide (NDPS) and cephaloridine (CPH). Male Fischer 344 rats (4 rats per group) were administered an intraperitoneal (i.p.) injection of CPH (500 mg/kg), NDPS (0.2 mmol/kg) or the appropriate vehicle 1 h prior to administration of an i.p. injection of NDPS (0.2, 0.4, or 1.0 mmol/kg), CPH (500, 750 or 1000 mg/kg) or the appropriate vehicle. Renal function was monitored at 24 and 48 h. Combination of non-nephrotoxic doses of CPH (500 mg/kg) and NDPS (0.2 mmol/kg) did not result in nephrotoxicity, regardless of which compound was administered first. NDPS (0.2 mmol/kg) weakly enhanced the nephrotoxicity observed following CPH (1000 mg/kg) injection but had little effect on CPH (750 mg/kg)-induced renal effects. However, CPH (500 mg/kg) markedly attenuated NDPS (0.4 or 1.0 mmol/kg)-induced nephrotoxicity. These results demonstrate that prior NDPS exposure has little effect on the outcome of CPH-induced renal effects, but prior CPH exposure can markedly alter the renal response to NDPS administration.
authors.affiliation: Department of Pharmacology, Marshall University School of Medicine, Huntington, WV 25755-9310.
authors.forename: G O
authors.initials: GO
authors.lastname: Rankin
authors.forename: V J
authors.initials: VJ
authors.lastname: Teets
authors.forename: D W
authors.initials: DW
authors.lastname: Nicoll
authors.forename: P I
authors.initials: PI
authors.lastname: Brown
mesh_terms: D000818:Animals; D001806:Blood Urea Nitrogen; D002509:Cephaloridine / Q000633:toxicity*; D004347:Drug Interactions; D005659:Fungicides, Industrial / Q000633:toxicity*; D007274:Injections, Intraperitoneal; D007668:Kidney / Q000187:drug effects*; D008297:Male; D009929:Organ Size / Q000187:drug effects; D051381:Rats; D011916:Rats, Inbred F344; D013388:Succinimides / Q000633:toxicity*
chemical_list: D005659:Fungicides, Industrial; D013388:Succinimides; C007352:N-(3,5-dichlorophenyl)succinimide; D002509:Cephaloridine