CD4 depletion in HIV-infected haemophilia patients is associated with rapid clearance of immune complex-coated CD4+ lymphocytes
The predominant immunological finding in HIV+ haemophilia patients is a decrease of CD4+ lymphocytes during progression of the disease. Depletion of CD4+ lymphocytes is paralleled by an increase in the proportion of immune complex-coated CD4+ cells. We examined the hypothesis that the formation of i...
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| Hauptverfasser: | , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
1999
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| In: |
Clinical & experimental immunology
Year: 1999, Jahrgang: 115, Heft: 3, Pages: 477-484 |
| ISSN: | 1365-2249 |
| DOI: | 10.1046/j.1365-2249.1999.00848.x |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1046/j.1365-2249.1999.00848.x Verlag, lizenzpflichtig, Volltext: https://onlinelibrary.wiley.com/doi/abs/10.1046/j.1365-2249.1999.00848.x 
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| Verfasserangaben: | V. Daniel, A. Melk, C. Süsal, R. Weimer, R. Zimmermann, A. Huth-Kühne & G. Opelz |
MARC
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| 245 | 1 | 0 | |a CD4 depletion in HIV-infected haemophilia patients is associated with rapid clearance of immune complex-coated CD4+ lymphocytes |c V. Daniel, A. Melk, C. Süsal, R. Weimer, R. Zimmermann, A. Huth-Kühne & G. Opelz |
| 246 | 3 | 3 | |a CD4 depletion in HIV-infected haemophilia patients is associated with rapid clearance of immune complex-coated CD4 + lymphocytes |
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| 520 | |a The predominant immunological finding in HIV+ haemophilia patients is a decrease of CD4+ lymphocytes during progression of the disease. Depletion of CD4+ lymphocytes is paralleled by an increase in the proportion of immune complex-coated CD4+ cells. We examined the hypothesis that the formation of immune complexes on CD4+ lymphocytes is followed by rapid clearance of immune complex-coated CD4+ lymphocytes from the circulation. In this study, the relationship of relative to absolute numbers of immune complex-loaded CD4+ blood lymphocytes and their association with viral load were studied. Two measurements of relative and absolute numbers of gp120-, IgG- and/or IgM-loaded CD4+ lymphocytes were analysed in HIV+ and HIV- haemophilia patients, with a median interval of approx. 3 years. Immune complexes on CD4+ lymphocytes were determined using double-fluorescence flow cytometry and whole blood samples. Viral load was assessed using NASBA and Nuclisens kits. Whereas the proportion of immune complex-coated CD4+ lymphocytes increased with progression of the disease, absolute numbers of immune complex-coated CD4+ lymphocytes in the blood were consistently low. Relative increases of immune complex-coated CD4+ blood lymphocytes were significantly associated with decreases of absolute numbers of circulating CD4+ lymphocytes. The gp120 load on CD4+ blood lymphocytes increased in parallel with the viral load in the blood. These results indicate that immune complex-coated CD4+ lymphocytes are rapidly cleared from the circulation, suggesting that CD4+ reactive autoantibodies and immune complexes are relevant factors in the pathogenesis of AIDS. Relative increases of immune complex-positive cells seem to be a consequence of both an increasing retroviral activity as well as a stronger loading with immune complexes of the reduced number of CD4+ cells remaining during the process of CD4 depletion. The two mechanisms seem to enhance each other and contribute to the progressive CD4 decrease during the course of the disease. | ||
| 650 | 4 | |a Antigen-Antibody Complex | |
| 650 | 4 | |a Case-Control Studies | |
| 650 | 4 | |a CD4 Antigens | |
| 650 | 4 | |a CD4 Lymphocyte Count | |
| 650 | 4 | |a CD4-Positive T-Lymphocytes | |
| 650 | 4 | |a Hemophilia A | |
| 650 | 4 | |a HIV Infections | |
| 650 | 4 | |a HIV Seronegativity | |
| 650 | 4 | |a Humans | |
| 650 | 4 | |a Lymphopenia | |
| 650 | 4 | |a Male | |
| 650 | 4 | |a Time Factors | |
| 650 | 4 | |a Viremia | |
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