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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 

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Studies on the effects of L(alpha S,5S)-alpha-amino-3-chloro-4,5-dihydro-5-isoxazoleacetic acid (AT-125) on 4-aminophenol-induced nephrotoxicity in the Fischer 344 rat.

4-Aminophenol (para-aminophenol; PAP) causes selective necrosis to the S3 segment of the proximal tubule in experimental animals. The mechanism of PAP nephrotoxicity has not been fully elucidated, although it has been suggested to involve glutathione (GSH)-dependent S-conjugation followed by processing by the enzyme gamma-glutamyl transpeptidase (gamma GT) to the corresponding cysteine S-conjugate. This proposed toxicity mechanism was probed further by administering L-(alpha S,5S)-alpha-amino-3-chloro-4,5-dihydro-5-isoxazoleacetic acid (AT-125), a potent gamma GT inhibitor, to Fischer 344 (F344) rats before treatment with PAP (100 mg/kg). AT-125 pretreatment did not appear to protect against PAP-induced nephrotoxicity as assessed by renal histopathology, clinical chemistry and proton nuclear magnetic resonance (1H NMR) spectroscopy of urine. These data suggest that renal gamma GT activity is not a prerequisite for PAP nephrotoxicity and that the generation of a cysteine S-conjugate is not a unique requirement for the induction of PAP nephrotoxicity.[1]

References

  1. Studies on the effects of L(alpha S,5S)-alpha-amino-3-chloro-4,5-dihydro-5-isoxazoleacetic acid (AT-125) on 4-aminophenol-induced nephrotoxicity in the Fischer 344 rat. Anthony, M.L., Beddell, C.R., Lindon, J.C., Nicholson, J.K. Arch. Toxicol. (1993) [Pubmed]
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