Carbohydrate malabsorption mechanism for tumor formation in rats treated with the SGLT2 inhibitor canagliflozin
| Autor: | Bianca Feyen, Sandra De Jonghe, Calvert Louden, Petra Vinken, Stewart Bryant, Godelieve Lammens, Rao N.V.S. Mamidi, Sandra Snook, Mark D. Johnson, Esther Moesen, Michael F. Kelley, Jim Proctor, Kirk Ways, Jing Ying Ma |
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| Rok vydání: | 2014 |
| Předmět: |
Male
medicine.medical_specialty Malabsorption Carcinogenesis chemistry.chemical_element Thiophenes Calcium Kidney Toxicology Rats Sprague-Dawley Excretion Glucosides Malabsorption Syndromes Internal medicine medicine Animals Hypercalciuria Canagliflozin Sodium-Glucose Transporter 2 Inhibitors Cell Proliferation Chemistry General Medicine medicine.disease Immunohistochemistry Urinary calcium Rats Endocrinology medicine.anatomical_structure SGLT2 Inhibitor Cell Adhesion Molecules Carbohydrate Metabolism Inborn Errors medicine.drug |
| Zdroj: | Chemico-Biological Interactions. 221:109-118 |
| ISSN: | 0009-2797 |
| Popis: | Canagliflozin is an SGLT2 inhibitor used for the treatment of type 2 diabetes mellitus. Studies were conducted to investigate the mechanism responsible for renal tubular tumors and pheochromocytomas observed at the high dose in a 2-year carcinogenicity study in rats. At the high dose (100mg/kg) in rats, canagliflozin caused carbohydrate malabsorption evidenced by inhibition of intestinal glucose uptake, decreased intestinal pH and increased urinary calcium excretion. In a 6-month mechanistic study utilization of a glucose-free diet prevented carbohydrate malabsorption and its sequelae, including increased calcium absorption and urinary calcium excretion, and hyperostosis. Cell proliferation in the kidney and adrenal medulla was increased in rats maintained on standard diet and administered canagliflozin (100mg/kg), and in addition an increase in the renal injury biomarker KIM-1 was observed. Increased cell proliferation is considered as a proximal event in carcinogenesis. Effects on cell proliferation, KIM-1 and calcium excretion were inhibited in rats maintained on the glucose-free diet, indicating they are secondary to carbohydrate malabsorption and are not direct effects of canagliflozin. |
| Databáze: | OpenAIRE |
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