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Diabetes Therapy

Exposure to tolbutamide and glibenclamide impairs insulin secretion

Published in Obesity and Diabetes Week, August 23rd, 2004

Chronic exposure to tolbutamide and glibenclamide impairs insulin secretion but not transcription of K-ATP channel components.

According to published research from Ireland, "Clonal insulin-secreting BRIN-BD11 cells were used to examine effects of chronic 72- to 144-hour exposure to the sulphonylureas tolbutamide and glibenclamide on insulin release, cellular insulin content, and mRNA levels of the Kir6.2 and SUR1 subunits of the beta-cell K-ATP channel.

Chronic exposure for 72-144 hours to 5-100 micromolar tolbutamide and glibenclamide resulted in a time- and concentration-dependent irreversible decline in sulphonylurea-induced insulin...

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