RS-4-(4-hydroxyphenyl)-2-butanol (rhododendrol (RD))-a skin-whitening ingredient-was reported to induce leukoderma in some consumers. We have examined the biochemical basis of the RD-induced leukoderma by elucidating the metabolic fate of RD in the course of tyrosinase-catalyzed oxidation. We found that the oxidation of racemic RD by mushroom tyrosinase rapidly produces RD-quinone, which gives ...

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Diabetes mellitus is accompanied with disturbances in learning, memory, and cognitive skills in the human society and experimental animals. Therefore, this research study was conducted to evaluate time-dependent changes in passive avoidance and Y-maze performance in male diabetic rats. For this purpose, male Wistar rats were randomly divided into control and diabetic groups. For induction of di...

Randia dumetorum (RD) fruits in different form have been ethnopharmacologically reported to possess antiasthmatic property. Therefore, present study was undertaken to evaluate two different extracts of RD i.e., ethyl acetate (RD-EA) and methanol (RD-ME) for bronchorelaxant, anti-inflammatory, mast cell stabilizing and antioxidant effect along with safety margin, according to OECD guidelines for...