title: Gastrin and upper GI cancers.
abstract: Gastrin was initially identified as the hormone primarily responsible for gastric acid secretion, but was subsequently shown to be a growth factor for the proximal stomach, acting through the gastrin receptor CCK2R. Studies in the past several decades have explored the role of gastrin, along with its incompletely processed precursors, in cancer development. The growth in long-term PPI use has frequently led to elevations in serum gastrin levels in patients with upper GI disease, including GERD, peptic ulcers, and chronic gastritis. However, while accumulated evidence has shown that gastrin likely does not promote-and may even suppress-distal antral gastric cancer, questions have now arisen regarding possible effects of gastrin on the development of gastric cardia cancer or esophageal adenocarcinoma at gastroesophageal junction. Here, we provide an overview of the possible roles of these gastrin peptides in upper GI cancer.
authors: Division of Digestive and Liver Diseases and Herbert Irving Cancer Research Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo 1138655, Japan.
authors: Yoku
authors: Y
authors: Hayakawa
authors: Division of Digestive and Liver Diseases and Herbert Irving Cancer Research Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA; Department of General Surgery, Zhongshan Hosptial, Fudan University, Shanghai 200032, China.
authors: Wenju
authors: W
authors: Chang
authors: Division of Digestive and Liver Diseases and Herbert Irving Cancer Research Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA.
authors: Guangchun
authors: G
authors: Jin
authors: Division of Digestive and Liver Diseases and Herbert Irving Cancer Research Center, Columbia University College of Physicians and Surgeons, New York, NY 10032, USA. Electronic address: tcw21@columbia.edu.
authors: Timothy C
authors: TC
authors: Wang
mesh_terms: D000230:Adenocarcinoma / Q000473:pathology*; D000818:Animals; D004938:Esophageal Neoplasms / Q000473:pathology*; D004943:Esophagogastric Junction / Q000473:pathology; D005755:Gastrins / Q000097:blood / Q000378:metabolism*; D005767:Gastrointestinal Diseases / Q000503:physiopathology; D006801:Humans; D054328:Proton Pump Inhibitors / Q000494:pharmacology; D013274:Stomach Neoplasms / Q000473:pathology*
chemical_list: D005755:Gastrins; D054328:Proton Pump Inhibitors