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Predicate | Object |
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rdf:type | |
lifeskim:mentions |
umls-concept:C0031586,
umls-concept:C0039194,
umls-concept:C0205148,
umls-concept:C0205217,
umls-concept:C0220781,
umls-concept:C0243125,
umls-concept:C0243127,
umls-concept:C0332120,
umls-concept:C0443331,
umls-concept:C0596901,
umls-concept:C0699900,
umls-concept:C1332714,
umls-concept:C1883254,
umls-concept:C1948023
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pubmed:issue |
1-2
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pubmed:dateCreated |
1991-2-14
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pubmed:abstractText |
Down-regulation of surface membrane CD4 (smCD4) in phorbol ester stimulated T-cells resulted from internalization. Internalization (T1/2 = 15 min at 50 ng PMA/ml) was followed by degradation of CD4-bound antibodies. Degradation in unstimulated T-cells was comparatively insignificant. Release of degradation products was PMA dose-dependent and could be inhibited by methylamine. Uptake and degradation continued after maximal down-regulation of surface membrane CD4, and methylamine did not inhibit reappearance of smCD4 antigens. Metabolic labelling of T-cells further showed that ongoing synthesis rather than recycling contributed to an accelerated smCD4 turnover in activated cells.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0014-5793
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
10
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pubmed:volume |
276
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
59-62
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:2265712-Antibodies, Monoclonal,
pubmed-meshheading:2265712-Antigens, CD4,
pubmed-meshheading:2265712-Cells, Cultured,
pubmed-meshheading:2265712-Humans,
pubmed-meshheading:2265712-Kinetics,
pubmed-meshheading:2265712-Lymphocyte Activation,
pubmed-meshheading:2265712-T-Lymphocytes,
pubmed-meshheading:2265712-Tetradecanoylphorbol Acetate
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pubmed:year |
1990
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pubmed:articleTitle |
Surface membrane CD4 turnover in phorbol ester stimulated T-lymphocytes. Evidence of degradation and increased synthesis.
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pubmed:affiliation |
Department of Clinical Immunology, University Hospital of Aarhus, Denmark.
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pubmed:publicationType |
Journal Article
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