Ceftezole, a cephem antibiotic, is an α-glucosidase inhibitor with in vivo anti-diabetic activity
Using a high throughput-compatible assay to screen for potential α-glucosidase inhibitors, we found that the β-lactam antibiotic ceftezole exhibited potent α-glucosidase inhibitory activity. In in vitro α-glucosidase assays, ceftezole was shown to be a reversible, non-competitive inhibitor of yeast α-glucosidase with a Ki value of 5.78x10−7 M when the enzyme mixture was pretreated with ceftezole. Using an in vivo streptozotocin-induced mouse model, we confirmed that blood glucose levels decreased by 30% 20 min after ceftezole treatment (10 mg/kg/day). Expression levels of glycogen synthase kinase-3, peroxisome proliferator-activated receptor-γ, and uncoupling protein-3 mRNA were also slightly decreased compared to controls following ceftezole treatment. Taken together, these in vivo and in vitro results suggest that ceftezole may be a clinically useful anti-diabetic compound.
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Document Type: Research Article
Affiliations: Department of Microbiology, Kyungpook National University, Daegu 702-701, Korea
Publication date: September 1, 2007
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- The International Journal of Molecular Medicine is a monthly, peer-reviewed journal devoted to the publication of high quality studies related to the molecular mechanisms of human disease. The journal welcomes research on all aspects of molecular and clinical research, ranging from biochemistry to immunology, pathology, genetics, human genomics, microbiology, molecular pathogenesis, molecular cardiology, molecular surgery and molecular psychology.
The International Journal of Molecular Medicine aims to provide an insight for researchers within the community in regard to developing molecular tools and identifying molecular targets for the diagnosis and treatment of a diverse number of human diseases.
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