Abstract
The involvement of particular intracellular signalling pathways in agonist-evoked degranulation of guinea pig pancreatic duct goblet cells was investigated. Carbachol, vasoactive intestinal peptide (VIP), calcium ionophore A23187, phorbol ester 12-O-tetradecanoylphorbol 13-acetate (TPA), cyclic AMP analogue Sp-5,6-DCl-cBIMPS and forskolin each caused degranulation of goblet cells in isolated ducts. Degranulation induced by carbachol was not inhibited by okadaic acid, cytochalasin-D or nocodazole. These results indicate that at least two major signalling pathways are involved in pancreatic duct goblet cell secretion.
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