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- W2014652851 abstract "Numerous studies have demonstrated that the administration of nonsteroidal anti-inflammatory drugs (NSAIDs) increases small intestinal permeability, and this has been suggested to be a prerequisite to enteropathy. It is believed that the inhibitory effect of chiral NSAIDs on the synthesis of prostaglandins and hence their efficacy and toxicity are mainly due to the S enantiomer. Using the urinary excretion of [51Cr]-EDTA, we have investigated the effects of three nonsteroidal anti-inflammatory drugs (flurbiprofen, ibuprofen, and ketoprofen) on small intestinal permeability in rats. Single doses of each NSAID were administered orally as either the racemate or the R or S enantiomer, the enantiomer dose being half that of the racemate. Each treatment caused a significant increase in intestinal permeability above that seen in untreated animals. The R enantiomers of all three NSAIDs increased small intestinal permeability significantly above base line, which was expected for (R)-ketoprofen and (R)-ibuprofen due to substantial chiral R to S inversion. The intestinal permeability for (R)-flurbiprofen, although minimal and likely due to 10% inversion, may also suggest prostaglandin-independent involvement. Furthermore, (S)-flurbiprofen, used at one-half the dose of the racemate, increased permeability to a similar magnitude as the racemate. This observation was similar to that previously reported for etodolac. A stereochemically pure enantiomer does not necessarily offer a safer alternative than its racemic form." @default.
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- W2014652851 title "Effect of the Enantiomers of Flurbiprofen, Ibuprofen, and Ketoprofen on Intestinal Permeability" @default.
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- W2014652851 doi "https://doi.org/10.1021/js960276y" @default.
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