The present study investigated the effects of Ginkgo biloba extract and its flavonoid fractions on alpha-amylase and alpha-glucosidase activity in vitro. Ginkgo biloba extracts and their flavonoid fraction significantly inhibited alpha-amylase and alpha-glucosidase activity in vitro. Furthermore, Ginkgo biloba extracts and their flavonoid fraction reduced the elevation of rat plasma glucose lev...

A synthèsis of novel 3-(1-chloropiperidin-4-yl)-6-fluoro benzisoxazole was carried out under mild réaction conditions using 1.2 équivalents of calcium hypochlorite. Interestingly, the developed method does not involve any additives like acids or bases and provides 96% of isolated yields at room temperature. This novel molécule, 3-(1-chloropiperidin-4-yl)-6-fluorobenzisoxazole 2 was stable at am...

Pompe disease, a rare autosomal recessive disorder caused by a deficiency of acid alpha-glucosidase, results in lysosomal accumulation of glycogen in multiple tissues, primarily affecting muscles. Infantileonset Pompe disease is characterised by generalised muscle weakness, hypotonia and lethal cardiomyopathy, resulting in death within the first year of life. The advent of enzyme replacement th...

This study investigated the antioxidant activity of methanol (MeOH) and water extracts from roots of Cirsium japonicumin vitro. MeOH extract showed a stronger free radical scavenging activity than water extract. However, both of extracts showed a concentration dependent hydroxyl radical scavenging activity, reducing power and metal chelating ability. MeOH extract had greater phenolic and flavon...

The amylase produced by the fungus, Aspergillus oryzae, has been used in the Orient for centuries and as a partially purified product since 1898 (1)) but surprisingly little is known of its action and properties. This lack of quantitative information is probably due largely to the fact that many investigations have dealt with rather crude alcohol precipitat,ion products of extracts of the mold ...

We have isolated two novel a-glucosidase inhibitors, O-[4-deoxy-4-(2,3-epoxy-3-hydroxymethyl-4,5,6-trihydroxycyclohexane-1-yl-amino)-alpha-D-glucopyranosyl]-(1-->4)-O-alpha-D-glucopyranosyl-(1-->4)-alpha-D-glucopyranose (named CKD-711) and its hexameric analog CKD-711a, from the fermentation broth of Streptomyces sp. CK-4416. HRFAB-MS and NMR analyses reveal that molecular formulae of CKD-711 a...

Gene duplications are believed to facilitate evolutionary innovation. However, the mechanisms shaping the fate of duplicated genes remain heavily debated because the molecular processes and evolutionary forces involved are difficult to reconstruct. Here, we study a large family of fungal glucosidase genes that underwent several duplication events. We reconstruct all key ancestral enzymes and sh...