Effects of 1-(3-bromobenzofuran-2-ylsulfonyl)hydantoin on human aldose reductase examined by a new application of HPLC system for measuring tissue polyol
1997
M16209 (1-(3-bromobenzofuran-2-ylsulfonyl)hydantoin, CAS 128851-36-5) displayed potent inhibitory effects upon recombinant human aldose reductase (rhAR, IC 50 = 0.051 μmol/l). The inhibition of rhAR by M16209 was uncompetitive with respect to both glyceraldehyde and NADPH. The effects of M16209 on human AR were investigated using a new application of HPLC system developed for analysis of tissue polyol. M16209 and epalrestat suppressed galactitol accumulation in human erythrocytes cultured in 25 mmol/l galactose with IC 50 values of 1.2 and 2.6 μmol/l, respectively. The new application of HPLC system equipped with an electrochemical detector did not require any derivatization procedure for polyols and enabled simultaneous determination of glucose, galactose, fructose, myo-inositol, galactitol and sorbitol.
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