Diabetes, Vol 36, Issue 1 118-122, Copyright © 1987 by American Diabetes Association
Prior cholecystokinin exposure sensitizes islets of Langerhans to glucose stimulation
WS Zawalich and VA Diaz
Prior, short-term exposure of isolated perifused islets to cholecystokinin
(CCK8S) sensitizes them to subsequent glucose stimulation. This
sensitization effect develops quickly and persists long after the removal
of CCK8S from the perifusion medium. Continued binding of CCK8S to its
receptor on the beta-cell and the increase in glucose metabolism noted with
glucose stimulation are essential for the full expression of this response.
This sensitization process may play an integral role in the postulated
incretin effect of the peptide.