PMID- 35430166 OWN - NLM STAT- MEDLINE DCOM- 20220614 LR - 20220724 IS - 1532-8392 (Electronic) IS - 0046-8177 (Linking) VI - 125 DP - 2022 Jul TI - Unique membranous gastrin receptor expression of parietal cells and its distribution pattern in the gastric oxyntic mucosa and fundic gland polyps. PG - 23-34 LID - S0046-8177(22)00080-6 [pii] LID - 10.1016/j.humpath.2022.04.001 [doi] AB - The aim of this study was to clarify the correlation between gastrin receptor (GR) expression in the gastric oxyntic mucosa and fundic gland polyps (FGPs) and the histological and immunohistochemical findings of the mucosa as well as the history of proton pump inhibitor (PPI) administration. The unique membranous linear positivity of GR in parietal cells was reproducibly observed by immunohistochemistry, which was also validated by immunofluorescence. Further histological and immunohistochemical examination of 34 oxyntic mucosae and 43 FGPs revealed the following: 1) parietal cells (PCs) with membranous linear GR expression (mGR) were observed to be limited to the isthmus-neck region in the normal state; 2) appearance of PCs with mGR in the deep oxyntic gland regions was significantly related to the PPI medication history; 3) PCs with mGR were more frequently observed in the deep oxyntic gland regions when the oxyntic mucosa showed derangement of mucosal component cell compartmentalization revealed by MUC5AC and MUC6 immunohistochemistry, which was also significantly related to the PPI use; and 4) PCs with intense membranous linear positivity of GR were observed to be diffusely distributed in all of the cases of FGPs. In conclusion, the distribution of unique GR membranous linear expression in PCs of the oxyntic mucosa under PPI medication and FGPs could reflect the pathologic mucosal state characterized by derangement of the compartmentalization of mucosal component cells, which could be another basis for evaluating physiologic and/or pathophysiologic conditions of the gastric mucosa. CI - Copyright (c) 2022 Elsevier Inc. All rights reserved. FAU - Sato, Yoko AU - Sato Y AD - Department of Pathology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama 343-8555, Japan. Electronic address: yokosato@dokkyomed.ac.jp. FAU - Ban, Shinichi AU - Ban S AD - Department of Pathology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama 343-8555, Japan. Electronic address: shinba@dokkyomed.ac.jp. FAU - Katayama, Yasumi AU - Katayama Y AD - Department of Gastroenterology, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama 343-8555, Japan. Electronic address: yasumi@dokkyomed.ac.jp. FAU - Mitsui, Takashi AU - Mitsui T AD - Department of Surgery, Dokkyo Medical University Saitama Medical Center, 2-1-50 Minami-Koshigaya, Koshigaya, Saitama 343-8555, Japan. Electronic address: mitsui@dokkyomed.ac.jp. LA - eng PT - Journal Article DEP - 20220414 PL - United States TA - Hum Pathol JT - Human pathology JID - 9421547 RN - 0 (Gastrins) RN - 0 (Proton Pump Inhibitors) RN - 0 (Receptor, Cholecystokinin B) RN - Polyposis Of Gastric Fundus Without Polyposis Coli RN - Polyposis, Gastric SB - IM MH - Adenomatous Polyps MH - Gastric Mucosa/pathology MH - Gastrins MH - Humans MH - Parietal Cells, Gastric/pathology MH - *Polyps/pathology MH - Proton Pump Inhibitors MH - *Receptor, Cholecystokinin B/metabolism MH - *Stomach Neoplasms/pathology OTO - NOTNLM OT - Fundic gland polyp OT - Gastrin receptor OT - Immunohistochemistry OT - Oxyntic mucosa OT - Proton pump inhibitor EDAT- 2022/04/18 06:00 MHDA- 2022/06/15 06:00 CRDT- 2022/04/17 20:17 PHST- 2021/12/31 00:00 [received] PHST- 2022/04/03 00:00 [revised] PHST- 2022/04/04 00:00 [accepted] PHST- 2022/04/18 06:00 [pubmed] PHST- 2022/06/15 06:00 [medline] PHST- 2022/04/17 20:17 [entrez] AID - S0046-8177(22)00080-6 [pii] AID - 10.1016/j.humpath.2022.04.001 [doi] PST - ppublish SO - Hum Pathol. 2022 Jul;125:23-34. doi: 10.1016/j.humpath.2022.04.001. Epub 2022 Apr 14.