Open AccessGastric and Intestinal Phenotypic Expression of Human Stomach Cancers as Revealed by Pepsinogen lmmunohistochemistry and Mucin Histochemistry
Author(s) -
Tatematsu Masae,
Ichinose Masao,
Miki Kazumasa,
Hasegawa Ryohei,
Kato Toshio,
Ito Nobuyuki
Publication year - 1990
Publication title -
acta patholigica japonica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.73
H-Index - 74
ISSN - 0001-6632
DOI - 10.1111/j.1440-1827.1990.tb01591.x
Subject(s) - mucin , immunohistochemistry , stomach , pathology , pepsin , human stomach , phenotype , medicine , biology , gastroenterology , enzyme , genetics , gene , biochemistry
Gastric and intestinal phenotypic expression in 223 surgically obtained primary gastric cancers and their histogenetic relationship to intestinal metaplasia in the surrounding gastric mucosa were studied by mucin histochemistry and pepsinogen (Pg) immunohistochemistry. Histochemical differentiation of mucins (paradoxical concanavalin A, the galactose oxidase‐Schiff sequence and sialidase galactose oxidase Schiff) and immunohisto chemical staining of Pgs I and II, allowed differentiation of gastric cancer cells from different histological categories into gastric elements including mucous neck cells, pyloric gland cells and surface mucous cells or intestinal elements including goblet cell and intestinal absorptive cell types. Of 122 papillary and tubular adenocarcinomas, 33 (27.1%) consisted mainly of gastric type cells and 42 (34.4%) predominantly of intestinal type cells. The remainder (38.5%) consisted of mixtures of gastric‐ and intestinal‐type cells. Of 101 poorly differentiated adenocarcinomas, signet ring cell carcinomas and mucinous adenocarcinomas, 59 (58.4%) consisted mainly of gastric‐type cells and 20 (19.8%) mainly of intestinal‐type cells. Seven out of 35 papillary and tubular adenocarcinomas consisting mainly of gastric type cancer cells were surrounded by mucosa with intestinal metaplasia. Conversely, 10 out of 40 papillary and tubular adenocarcinomas consisting mainly of intestinal‐type cancer cells were observed in non metaplastic gastric mucosa. Thus no relationship as regards intestinal phenotypic expression was found between gastric cancers and surrounding gastric mucosa.