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Identification of Paneth cells in pyloric glands associated with gastric and intestinal mixed-type intestinal metaplasia of the human stomach. 2001

K Inada, and H Tanaka, and H Nakanishi, and T Tsukamoto, and Y Ikehara, and K Tatematsu, and S Nakamura, and E M Porter, and M Tatematsu
Laboratory of Pathology, Aichi Cancer Center Research Institute, Nagoya, Japan. kinada@aichigw.aichi-cc.pref.aichi.jp

We have proposed that intestinal metaplasia (IM) of the human stomach be divided into two types on the basis of cell differentiation status: a gastric and intestinal (GI) mixed type and a solely intestinal (I) type. In the GI mixed type, gastric (foveolar epithelial and pyloric gland cells) and intestinal (goblet, intestinal absorptive, and Paneth cells) phenotype cells coexist in the same intestinalized gastric glands in various combinations and degrees. Consequently, intestinalized gastric glands are hybrids. Although we have described the rare appearance of Paneth-like cells in pyloric glands of GI mixed-type IM, the absence of an appropriate Paneth cell marker leaves room for doubt as to their true character. The purpose of this study was to clearly identify Paneth cells in pyloric glands in IM lesions using a new Paneth cell marker, a polyclonal antibody human defensin (HD)-5, raised against HD-5, which is included in granules of Paneth cells. A total of 105 gastric samples (4 biopsy and 101 surgical resected specimens) were examined. In only nine cases (8.6%), the antibody allowed demonstration of Paneth cells in pyloric glands in GI mixed-type IM, confirming our previous finding. Analysis of the proliferative cell (P) zone indicated that a common stem cell might generate both GI phenotype cells by upward and downward migration. No Paneth cells were found above the P zone. The results suggest that the stem cells show abnormal cell differentiation in IM lesions but preserve their normal direction of migration.

UI MeSH Term Description Entries
D007150 Immunohistochemistry Histochemical localization of immunoreactive substances using labeled antibodies as reagents. Immunocytochemistry,Immunogold Techniques,Immunogold-Silver Techniques,Immunohistocytochemistry,Immunolabeling Techniques,Immunogold Technics,Immunogold-Silver Technics,Immunolabeling Technics,Immunogold Silver Technics,Immunogold Silver Techniques,Immunogold Technic,Immunogold Technique,Immunogold-Silver Technic,Immunogold-Silver Technique,Immunolabeling Technic,Immunolabeling Technique,Technic, Immunogold,Technic, Immunogold-Silver,Technic, Immunolabeling,Technics, Immunogold,Technics, Immunogold-Silver,Technics, Immunolabeling,Technique, Immunogold,Technique, Immunogold-Silver,Technique, Immunolabeling,Techniques, Immunogold,Techniques, Immunogold-Silver,Techniques, Immunolabeling
D007421 Intestine, Small The portion of the GASTROINTESTINAL TRACT between the PYLORUS of the STOMACH and the ILEOCECAL VALVE of the LARGE INTESTINE. It is divisible into three portions: the DUODENUM, the JEJUNUM, and the ILEUM. Small Intestine,Intestines, Small,Small Intestines
D008297 Male Males
D008679 Metaplasia A condition in which there is a change of one adult cell type to another similar adult cell type.
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009077 Mucins High molecular weight mucoproteins that protect the surface of EPITHELIAL CELLS by providing a barrier to particulate matter and microorganisms. Membrane-anchored mucins may have additional roles concerned with protein interactions at the cell surface. Mucin
D009687 Nuclear Proteins Proteins found in the nucleus of a cell. Do not confuse with NUCLEOPROTEINS which are proteins conjugated with nucleic acids, that are not necessarily present in the nucleus. Nucleolar Protein,Nucleolar Proteins,Nuclear Protein,Protein, Nuclear,Protein, Nucleolar,Proteins, Nuclear,Proteins, Nucleolar
D011230 Precancerous Conditions Pathological conditions that tend eventually to become malignant. Preneoplastic Conditions,Condition, Preneoplastic,Conditions, Preneoplastic,Preneoplastic Condition,Condition, Precancerous,Conditions, Precancerous,Precancerous Condition
D005260 Female Females
D005753 Gastric Mucosa Lining of the STOMACH, consisting of an inner EPITHELIUM, a middle LAMINA PROPRIA, and an outer MUSCULARIS MUCOSAE. The surface cells produce MUCUS that protects the stomach from attack by digestive acid and enzymes. When the epithelium invaginates into the LAMINA PROPRIA at various region of the stomach (CARDIA; GASTRIC FUNDUS; and PYLORUS), different tubular gastric glands are formed. These glands consist of cells that secrete mucus, enzymes, HYDROCHLORIC ACID, or hormones. Cardiac Glands,Gastric Glands,Pyloric Glands,Cardiac Gland,Gastric Gland,Gastric Mucosas,Gland, Cardiac,Gland, Gastric,Gland, Pyloric,Glands, Cardiac,Glands, Gastric,Glands, Pyloric,Mucosa, Gastric,Mucosas, Gastric,Pyloric Gland

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