Linked Life Data

2839749

Source:http://linkedlifedata.com/resource/pubmed/id/2839749

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1988-8-19
pubmed:abstractText
Expression of the epidermal growth factor (EGF), EGF receptor (EGF-R) and ras oncogene product p21 was simultaneously examined in 37 cases with intrahepatic cholangiocarcinoma (CC) by means of an immunocytochemical method. While normal livers were all negative for any of the antigens at the concentration of the antibodies used, EGF-R was positive in 12 (32.4%) CCs, EGF in 22 (59.5%), and ras p21 in 33 (89.2%). The positive incidence of the three antigens was not different among the histologic subtypes of the tumor. However, the number of EGF-R- and ras p21-positive tumor cells decreased with progressing histologic tumor grade, but the expression of EGF was not associated with the tumor grade. Expression of the three antigens was not related to the degree of metastatic spread of the tumor. Simultaneous expression of the three antigens was seen only in 4 CCs, and that of EGF-R and EGF in 4, EGF-R and ras p21 in 12, and EGF and ras p21 in 20. These data suggest that the expression of EGF, EGF-R and ras p21 on CC cells is not related to the tumor aggressiveness, and the activation of each respective gene is independent. Furthermore, the data also indicate that an autocrine model for tumor growth, as suggested by a combination of EGF and EGF-R, may be applicable only to very limited cases of CCs.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jun
pubmed:issn
0106-9543
pubmed:author
pubmed:issnType
Print
pubmed:volume
8
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
157-66
pubmed:dateRevised
2009-11-19
pubmed:meshHeading
pubmed:year
1988
pubmed:articleTitle
Simultaneous detection of epidermal growth factor receptor (EGF-R), epidermal growth factor (EGF) and ras p21 in cholangiocarcinoma by an immunocytochemical method.
pubmed:affiliation
Department of Pathology, School of Medicine, Kanazawa University, Japan.
pubmed:publicationType
Journal Article