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Abstract
The inhibition of ethoxy coumarin O-deethylase (ECOD) activity by aucubin and its
aglycone was examined in a microsomal system and in freshly isolated hepatocytes.
Aucubin was found to be inactive but the aglycone was found to be a potent time-dependent
inhibitor of ECOD activity in both systems. The close structural similarity between
the aglycone of aucubin and glutaraldehyde suggests a similar mechanism of enzyme
inhibition through protein cross-linking by Schiff reactions. The similarity between
the 2 compounds was demonstrated through their closely similar binding spectra to
bovine serum albumin. The biological activities reported for the aglycone are suggested
to be due to this similarity to glutaraldehyde.