Linked Life Data

8436241

Source:http://linkedlifedata.com/resource/pubmed/id/8436241

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1993-3-25
pubmed:abstractText
The expression and distribution of integrin subunits alpha 2 and alpha 3 and two of their putative ligands, type IV collagen and laminin, were examined by immunohistochemistry in specimens from 33 consecutive patients operated on for colorectal adenocarcinomas. Both tumour cells and normal epithelium expressed the alpha 2 and alpha 3 subunits. Two typical patterns of expression could be discerned; a basolateral expression and a diffuse cytoplasmic expression. The stained tumour specimens were assessed according to (i) distribution of integrin expression (diffusely cytoplasmic or basolateral), (ii) continuity in basolateral integrin expression, and (iii) interconnection of integrin expression and expression of type IV collagen and laminin. These parameters were then related to tumour differentiation, tumour stage according to Dukes' classification, DNA-ploidy and patient survival (median observation time was 30 months; range 24-35). The continuity in the basolateral expression of alpha 3 but not of alpha 2, correlated with the basal membrane expression of type IV collagen (P < 0.001). Loss of continuity in the basolateral expression of both integrins was significantly related to impaired tumour differentiation (alpha 2 P = 0.02; alpha 3 P = 0.01), more advanced Dukes' stage (alpha 2 = 0.07, alpha 3 P < 0.001), survival rate (both integrins P < 0.05), but not to DNA-ploidy. These data suggest that determination of the pattern of expression of the integrin subunits alpha 2 and alpha 3 in the preoperative biopsy and the surgical specimen could be used as a prognostic indicator.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0748-7983
pubmed:author
pubmed:issnType
Print
pubmed:volume
19
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
50-60
pubmed:dateRevised
2007-7-2
pubmed:meshHeading
pubmed:year
1993
pubmed:articleTitle
Interconnection of integrins alpha 2 and alpha 3 and structure of the basal membrane in colorectal cancer: relation to survival.
pubmed:affiliation
Department of Surgery, University of Uppsala, Sweden.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't