Linked Life Data

1280864

Source:http://linkedlifedata.com/resource/pubmed/id/1280864

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
1993-1-7
pubmed:abstractText
Glycoprotein IV (GPIIb, CD36) is a major platelet membrane glycoprotein which is thought to participate in a number of adhesive reactions and to mediate signal transduction. In order to measure the total content of GPIV in human platelets, we have developed a simple and sensitive solid-phase radioimmunoassay based on the immunocapture of GPIV from Triton X-100-solubilized platelets. FA6-152, a monoclonal antibody to GPIV was coated on microtiter plates and bound antigen was quantified with a radiolabeled polyclonal antibody to GPIV. Using purified GPIV as a standard, the coefficients of variation of the assay were found to be less than 10% at concentrations of GPIV ranging from 0.15 to 0.75 micrograms/ml. The assay was validated by the parallelism obtained between purified GPIV dose-response curves and those obtained with platelet lysates, indicating a similar antigenic activity for GPIV in both samples. The level of GPIV in platelets from healthy donors was 0.23 +/- 0.05 (mean +/- SD, n = 15) micrograms per 100 micrograms of platelet proteins and a mean value of 27,440 +/- 6,200 (SD) molecules per platelet was calculated. The radioimmunoassay could be used to discriminate between the high level of platelet GPIV in patients with essential thrombocythemia (mean +/- SD = 81,850 +/- 27,780 molecules/platelet; n = 8) and the normal GPIV level in patients with secondary thrombocytosis (mean +/- SD = 26,810 +/- 4,030 molecules/platelet; n = 5), thereby demonstrating the clinical usefulness of the assay. The specific increase in platelet GPIV in patients with essential thrombocythemia was confirmed by immunoblot analysis whereas no increase in platelet GPIb or GPIIb-IIIa was observed by this technique.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0340-6245
pubmed:author
pubmed:issnType
Print
pubmed:day
10
pubmed:volume
68
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
600-5
pubmed:dateRevised
2008-11-21
pubmed:meshHeading
pubmed:year
1992
pubmed:articleTitle
Quantitation of platelet glycoprotein IV (CD36) in healthy subjects and in patients with essential thrombocythemia using an immunocapture assay.
pubmed:affiliation
INSERM U 353, Hôpital St. Louis, Paris, France.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't