Pancreatic islets by scarce alpha, delta and PP cells in the periphery, human islets display alpha and beta cells in close relationship with each other throughout the cluster. Islets can influence each other through paracrine and autocrine communication, and beta cells are coupled electrically to six to seven other beta cells (but not to other cell types). The paracrine feedback system of the pancreatic islets has the following structure: A large number of G protein-coupled receptors (GPCRs) regulate the secretion of insulin, glucagon and somatostatin from pancreatic islets, and some of these GPCRs are the targets of drugs used to treat type-2
Ryan Langerhans from a game against the Padres when he injured his right shoulder after crashing into the left-field wall at San Diego's Petco Park. After coming off the 15-day disabled list, Langerhans was outrighted by the Angels. On October 6, 2012, Langerhans elected free agency. On December 18, 2012, the Toronto Blue Jays announced that Langerhans had been signed to a minor league contract with an invitation to major league spring training. Langerhans played for the Triple-A Buffalo Bisons during the 2013 season until he was released on June 21. After leaving the Bisons, Langerhans played for the Sugar Land Skeeters