Abstract
Epidermal growth factor (EGF) up-regulation of glucose absorption via increased Na+/glucose co-transporter (SGLT-1) activity has previously been described in rabbit jejunal brush-border membrane and in differentiated Caco-2 cells. The goal of the present study was to assess the in vitro effect of EGF (200 ng/ml) on glucose uptake in human mucosal specimens, and we describe a simple procedure that uses endoscopic biopsies for short-term gludose uptake measurements. Uptake values for the EGF-treated biopsies ranged from 2.7 to 29.0, with a mean uptake of 10.65, while uptake values for the untreated biopsies ranged from 0.9 to 17.5, with a mean uptake of 7.99 (P < 0.05, paired t test). This early effect of EGF on human enterocytes may have important therapeutic implications. A role in increasing the rate of internal rehydration is suggested.
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