Expression of transforming growth factor alpha in experimental gastric carcinogenesis.

Abstract:

:The induction of adenocarcinomas in the glandular stomach of the adult male Wistar rat by N-methyl-N'-nitro-N-nitrosoguanidine (MNNG) was used as a model to study the expression of the growth promoting peptide, transforming growth factor alpha (TGF alpha), during experimental gastric carcinogenesis. TGF alpha was identified using the monoclonal antibody Ab-2 and standard immunohistochemistry, together with a semiquantitative assessment of the intensity of expression. Immunoreactivity was confined to the differentiated compartment of the mucosa while the carcinogen MNNG caused a significant increase in the intensity of TGF alpha expression (p < 0.01), after as little as 16 weeks' exposure. In experimental adenocarcinomas, a change to a previously undescribed pattern of perinuclear TGF alpha expression was found, which may represent the site of intense TGF alpha production in the Golgi apparatus after malignant transformation.

journal_name

Gut

journal_title

Gut

authors

Livingstone JI,Filipe MI,Wastell C

doi

10.1136/gut.35.5.604

subject

Has Abstract

pub_date

1994-05-01 00:00:00

pages

604-7

issue

5

eissn

0017-5749

issn

1468-3288

journal_volume

35

pub_type

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