Linked Life Data

7531384

Source:http://linkedlifedata.com/resource/pubmed/id/7531384

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1995-3-9
pubmed:abstractText
CD34 is a sialylated transmembrane glycoprotein of unknown function that is present in myeloid progenitor cells, endothelial cells, and some fibroblast-related mesenchymal cells. However, its tissue distribution is still incompletely characterized. In this study we evaluated the distribution of CD34 antigen in tumors of the central and peripheral nervous system. For comparison the tumors were also stained for CD31, also known as platelet-endothelium cell adhesion molecule (PECAM-1), a transmembrane glycoprotein so far considered to be endothelium specific beyond its reactivity with certain hematopoietic cells. Neurofibromas showed consistently high numbers of CD34-positive spindle cells, whereas peripheral and acoustic schwannomas were negative. A subset of meningiomas (15%) showed CD34-positive tumor cells, and some were also weakly positive for CD31. Gliomas were negative. Meningeal hemangiopericytomas were consistently CD34 positive, but CD31 negative. These results indicate a moderately widespread distribution of the CD34 antigen in nervous system tumors, and necessitate caution in making conclusions regarding endothelial cell differentiation of nervous system tumors on the basis of CD34 immunoreactivity.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
0001-6322
pubmed:author
pubmed:issnType
Print
pubmed:volume
88
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
454-8
pubmed:dateRevised
2007-11-9
pubmed:meshHeading
pubmed:year
1994
pubmed:articleTitle
CD34 immunoreactivity in nervous system tumors.
pubmed:affiliation
Department of Pathology, Thomas Jefferson University Hospital, Philadelphia, PA 19107.
pubmed:publicationType
Journal Article, Comparative Study