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M9610561.TXT
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1996-01-30
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Document 0561
DOCN M9610561
TI [Immunohistochemical study of collagen in gastric cancer tissue]
DT 9601
AU Kondou S; Kanayama K; Morise K; First Department of Internal Medicine,
Nagoya University School; of Medicine.
SO Nihon Rinsho Meneki Gakkai Kaishi. 1995 Apr;18(2):168-77. Unique
Identifier : AIDSLINE MED/96058434
AB The distribution and localization of collagen types were studied
immunohistochemically in resected tissues obtained from gastric cancer
patients. The expression of transforming growth factor (TGF) -alpha,
TGF-beta 1 and TGF-beta 2 on cancer cells as well as the aggregation of
T lymphocytes in the cancer tissue were also studied, in order to
determine the differences between differentiated and undifferentiated
type cancer. The interstitial tissues of differentiated type cancer
showed intense staining for types I and III collagen, while those of
undifferentiated type cancer showed intense staining for types I and III
collagen, in addition to the stronger staining for types IV, V and VI
collagen. Characteristically, type IV collagen was intensely stained in
the interstitium in 18 of 20 undifferentiated type cancer (90%), but was
stained in only one of 15 differentiated type cancer (6%). CD 3+ T
lymphocytes were aggregated in the interstitial tissue of both the
tumors, where the density of CD 4+ cells and the ratio of CD 4 to CD 8
were significantly higher in undifferentiated type cancer than in
differentiated type cancer. TGF-alpha was detected in cancer cells in
80% of the differentiated cases and in 45% of the undifferentiated
cases. The staining of TGF-beta 1 was also detected in 80% of the
undifferentiated cases, which was significantly higher than 47% in
differentiated cases. There were no differences in the incidences of
staining for TGF-beta 2 between differentiated (33%) and
undifferentiated type cancer (40%). These results suggest that there
exist different mechanisms in the regulation of collagen production
between differentiated and undifferentiated types of gastric cancer.
DE Adenocarcinoma/*CHEMISTRY/IMMUNOLOGY Aged Collagen/*ANALYSIS CD4-CD8
Ratio English Abstract Female Human Immunohistochemistry Male
Stomach Neoplasms/*CHEMISTRY/IMMUNOLOGY Transforming Growth Factor
alpha/ANALYSIS Transforming Growth Factor beta/ANALYSIS JOURNAL
ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).