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Activated T lymphocytes disappear from circulation during endotoxemia in humans

K S Krabbe, H Bruunsgaard, J Qvist, L Fonsmark, K Møller, C M Hansen, P Skinhøj, B K Pedersen

23 Citations (Scopus)

Abstract

Seventeen volunteers received an intravenous bolus of endotoxin (2 ng/kg of body weight). Endotoxin-induced lymphopenia was constituted mainly by cells with an immature phenotype (CD45RA(+) CD45RO(-)) that were less likely to undergo apoptosis (CD28(+)), whereas cells with the highest rates of disappearance were characterized by an activated phenotype (CD45RA(-) CD45RO(+)) as well as a phenotype linked to apoptosis (CD95(+) CD28(-)). In conclusion, endotoxin-induced lymphopenia reflects the disappearance from the circulation of activated lymphocytes prone to undergo apoptosis.

Original languageEnglish
JournalClinical and Diagnostic Laboratory Immunology
Volume9
Issue number3
Pages (from-to)731-5
Number of pages5
ISSN1071-412X
DOIs
Publication statusPublished - May 2002
Externally publishedYes

Keywords

  • Adult
  • Aged
  • Aging/immunology
  • Apoptosis/immunology
  • CD28 Antigens/immunology
  • CD4-Positive T-Lymphocytes/immunology
  • CD8-Positive T-Lymphocytes/immunology
  • Endotoxemia/immunology
  • Escherichia coli
  • Humans
  • Killer Cells, Natural/immunology
  • Leukocyte Common Antigens/immunology
  • Lymphocyte Activation/immunology
  • Lymphopenia/immunology
  • Middle Aged
  • fas Receptor/immunology

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