title: Histological evaluation of connective tissue components in the healing process of human gastric ulcer.
abstract: 1. The aim of the present study was the evaluation of human gastric ulcer healing and intractability from the viewpoint of connective tissue components. 2. Based on investigations of clinical status, we divided 78 patients with a gastric ulcer into three groups. All patients underwent gastrectomy and group I consisted of 17 patients operated on for bleeding or perforation, group II consisted of 37 patients operated on for an accompanying gastric carcinoma and group III consisted of 24 patients operated on for ulcer intractability. 3. We evaluated, in resected specimens, angiogenesis by Azan-Mallory staining and fibroplasia by applying proliferating cell nuclear antigen (PCNA) immunostaining. The inflammatory grade and fibrosis at the ulcer base were also evaluated by haematoxylin-eosin and Azan-Mallory staining. 4. Microvessel counts in group III were significantly lower than those in group I and II (P < 0.05). The PCNA labelling index of fibroblasts in group III was significantly lower than that in groups I and II (P < 0.05). The inflammatory grade was severe and fibrosis was excessive in group III. 5. From these results, it is suggested that the reduced angiogenesis and decline in fibrous cell proliferation are important factors contributing to gastric ulcer intractability.
authors.affiliation: Second Department of Internal Medicine, Nagoya University School of Medicine, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Miyata
authors.forename: H
authors.initials: H
authors.lastname: Goto
authors.forename: Y
authors.initials: Y
authors.lastname: Niwa
authors.forename: T
authors.initials: T
authors.lastname: Hayakawa
authors.forename: T
authors.initials: T
authors.lastname: Nagasaka
authors.forename: N
authors.initials: N
authors.lastname: Nakashima
mesh_terms: D000328:Adult; D000368:Aged; D002196:Capillaries / Q000473:pathology; D003238:Connective Tissue / Q000473:pathology*; D005260:Female; D005355:Fibrosis / Q000473:pathology; D006801:Humans; D007150:Immunohistochemistry; D008297:Male; D008875:Middle Aged; D018919:Neovascularization, Physiologic / Q000187:drug effects / Q000502:physiology; D018809:Proliferating Cell Nuclear Antigen / Q000378:metabolism; D013276:Stomach Ulcer / Q000473:pathology*
chemical_list: D018809:Proliferating Cell Nuclear Antigen