alexa Effect of microsomal enzyme modulators on N-(3,5-dichlorophenyl)-2-hydroxysuccinimide (NDHS)-induced nephrotoxicity in the Fischer 344 rat.
Pharmaceutical Sciences

Pharmaceutical Sciences

Pharmaceutica Analytica Acta

Author(s): Beers KW, Nicoll DW, Anestis DK, Brown PI, Rankin GO

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Abstract We have previously reported that phenobarbital (PB) pretreatment enhances and piperonyl butoxide (PIBX) pretreatment or cobalt chloride (CoCl2) pretreatment decreases the nephrotoxicity induced by the model nephrotoxicant N-(3,5-dichlorophenyl)succinimide (NDPS) in the Fischer 344 rat. The objective of this study was to determine the effect of a microsomal enzyme inducer (PB) or microsomal enzyme inhibitor (PIBX or CoCl2) on a single intraperitoneal (i.p.) injection of N-(3,5-dichlorophenyl)-2-hydroxysuccinimide (NDHS, 0.05, 0.1 or 0.2 mmol/kg), a nephrotoxicant metabolite of NDPS, or vehicle (sesame oil, 2.5 ml/kg). Renal function was monitored at 24 and 48 h post-NDHS for PB pretreated rats and at 24 h only for PIBX and CoCl2 pretreated rats, due to lethality at 48 h in PIBX pretreated rats. PB pretreatment potentiated the renal toxicity induced by a non-toxic dose of NDHS (0.05 mmol/kg), inducing diuresis and elevated proteinuria, hematuria, glucosuria, blood urea nitrogen (BUN) concentration and kidney weight. PB pretreatment also enhanced some monitored renal effects of a toxic dose (0.1 mmol/kg) of NDHS, including reduced organic ion transport by renal cortical slices. PIBX and CoCl2 pretreatments did not markedly affect the increased kidney weight, proteinuria, glucosuria, BUN concentration or altered organic ion transport induced by NDHS (0.2 mmol/kg) treatment. We conclude that PB potentiates NDHS-induced nephrotoxicity via a mechanism not influenced by CoCl2 or PIBX.
This article was published in Toxicology and referenced in Pharmaceutica Analytica Acta

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