Elsevier

Toxicology

Volume 45, Issue 3, September 1987, Pages 269-289
Toxicology

Effect of microsomal enzyme activity modulation on N-(3,5-dichlorophenyl)succinimide-induced nephrotoxicity,☆☆

https://doi.org/10.1016/0300-483X(87)90018-7Get rights and content

Abstract

N-(3,5-Dichlorophenyl)succinimide (NDPS) is an experimental agricultural fungicide which has been shown to be a selective nephrotoxin. The purpose of this study was to determine if a NDPS metabolite contributes to acute NDPS-induced nephrotoxicity. Male Sprague-Dawley or Fischer 344 rats were pretreated with a microsomal enzyme inducer [phenobarbital (PB) or 3-methylcholanthrene (3-MC)] or inhibitor [cobalt chloride (CoCl2) or piperonyl butoxide (PIBX)] followed by a single intraperitoneal injection of NDPS (0.2, 0.4 or 1.0 mmol/kg) or vehicle (sesame oil, 2.5 ml/kg). Renal function was monitored at 24 and 48 h. CoCl2 or PIBX pretreatment reduced NDPS-induced diuresis, proteinuria and hematuria, and reduced the increases seen in the blood urea nitrogen (BUN) concentration and kidney weight. NDPS-induced decreases in organic ion accumulation were not markedly altered by CoCl2 or PIBX pretreatment. PB pretreatment enhanced all NDPS- (0.2 mmol/kg) induced renal effects, while 3-MC pretreatment protected against NDPS-induced diuresis, proteinuria, hematuria, and increases in the BUN concentration observed in both rat strains. Kidney weight and organic ion uptake changes were not substantially different between NDPS-treated rats with or without 3-MC pretreatment. It was concluded that a metabolite(s) contributes to or is responsible for acute NDPS-induced nephrotoxicity and that at least 1 toxic metabolite might be of extrarenal origin.

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  • Renal damage, metabolism and covalent binding following administration of the nephrotoxicant N-(3,5-dichlorophenyl)succinimide (NDPS) to male Fischer 344 rats

    2002, Toxicology
    Citation Excerpt :

    In contrast, PB induction increased levels of 2-NDHSA, particularly in renal homogenates (Figs. 2 and 3). Modulation of enzyme activity was previously shown to alter NDPS nephrotoxicity in vivo (Rankin et al., 1987; Nyarko et al., 1997) and NDPS metabolism in vitro (Griffin et al., 1996; Nyarko and Harvison, 1995; Nyarko et al., 1997). Our results with the kidney homogenates establish an in vivo link between oxidative biotransformation of NDPS and greater exposure of kidney cells to 2-NDHSA, a known, potent in vivo nephrotoxicant (Rankin et al., 1988).

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Presented in part at the Sixty-ninth Annual Meeting of the Federation of American Societies for Experimental Biology, Anaheim, California, April 22–26, 1985.

☆☆

Supported by NIH Grant DK 31210.

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