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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1990-9-20
pubmed:abstractText
An immunohistochemical analysis of the expression of Lewis(a), Lewis(b), and sialated Lewis(a) blood group antigens was performed on specimens of human non-involved stomach (n = 91), early gastric cancers (n = 41), and advanced gastric cancers (n = 50). In non-involved stomach, Lewis(a) and Lewis(b) were detected mainly in surface epithelium, although sialated Lewis(a) was scarcely expressed. These blood group-related antigens were rarely observed in deep glands. In gastric cancers, Lewis(a) showed a tendency to be expressed in well or moderately differentiated carcinomas, and this was observed to be more marked in advanced tumors. There was no obvious difference in positive ratios of Lewis(b) between degrees of differentiation of the cancers. Sialated Lewis(a) was not detected in early cancers, and its frequent expression in well- or moderately differentiated, advanced carcinomas suggested an association with both cancer differentiation and progression. These results indicate that knowledge of the expression of blood group antigens may help interpret the antigenic alterations occurring in the course of carcinogenesis, differentiation, and progression of gastric cancers.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Aug
pubmed:issn
0022-4790
pubmed:author
pubmed:issnType
Print
pubmed:volume
44
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
208-13
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Expression of Lewis(a), Lewis(b), and sialated Lewis(a) antigens in early and advanced human gastric cancers.
pubmed:affiliation
1st Department of Surgery, Nagoya City University, Japan.
pubmed:publicationType
Journal Article