Abstract
BACKGROUND: T-lymphocytes that co-express CD4 and CD8 antigens may be found in small percentages in the peripheral blood of healthy individuals, and have a CD4brightCD8dull phenotype. CD4dullCD8bright T-lymphocytes have been found only in temporal association with some viral infections.
METHODS: Four-colour flow cytometric analysis of peripheral blood mononuclear cells from a renal transplant recipient with cytomegalovirus infection was performed.
RESULTS: A small but clearly distinguishable subpopulation of CD4dullCD8bright double-positive T-lymphocytes was detected, that exhibited phenotypic characteristics of cytotoxic T-lymphocytes and were granzyme B positive. Furthermore, no naive cells appeared to be present within this subpopulation.
CONCLUSIONS: CD4dullCD8bright double-positive T-lymphocytes are enriched for memory and effector cytotoxic T cells.
| Original language | English |
|---|---|
| Pages (from-to) | 1430-1434 |
| Number of pages | 5 |
| Journal | Nephrology, dialysis, transplantation : official publication of the European Dialysis and Transplant Association - European Renal Association |
| Volume | 14 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - Jun 1999 |
| Externally published | Yes |
Keywords
- CD4 Antigens/analysis
- CD8 Antigens/analysis
- Female
- Granzymes
- Humans
- Immunologic Memory
- Immunophenotyping
- Middle Aged
- Serine Endopeptidases/metabolism
- T-Lymphocytes/immunology
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