CCK and pancreatitis: The hormone/neurotransmitter, CCK, is one of the most important physiological regulators of pancreatic exocrine functions (i.e., the secretion, growth and synthesis of enzymes) [80,120,121,122], as well as is important in various exocrine pancreatic pathophysiological processes (such as pancreatitis and cancer growth) [80,120,123,124,125,126].