recovery of t-lymphocytes for adoptive immunotherapy by lymphapheresis of hiv-infected patients without alterations of virological, immunological or clinical parameters.

NLM AIDSLINE Recovery of T-lymphocytes for adoptive immunotherapy by lymphapheresis of HIV-infected patients without alterations of virological, immunological or clinical parameters. van Lunzen J; Schmitz J; Dengler K; Schmidt L; Schmitz H; Dietrich M;
April 30, 1995

Br J Haematol. 1994 Sep;88(1):46-51. Unique Identifier : AIDSLINE We performed repeated continuous flow cytaphereses (CFC) on 13 asymptomatic HIV-1-infected patients to study the feasibility of cell separation procedures to recover high yields of peripheral blood T-lymphocytes for adoptive immunotherapy in HIV-infected patients and to determine immunological and virological alterations following such procedures. A mean yield of 6.23 x 10(9) lymphocytes could be obtained by each cytapheresis, containing 1.82 x 10(9) CD4+, 3.23 x 10(9) CD8+ T-lymphocytes and 8.39 x 10(6) CD34+ peripheral progenitor cells. The CD4/CD8 ratio (mean 0.53, SD +/- 0.15) in the cell samples reflected the distribution of the lymphocyte subsets in vivo. Absolute lymphocyte counts decreased at a mean of 404/mm3 (25%) immediately after CFC but were replaced from the extravascular pool within 1 h. The CD4/CD8 ratios, p24-antigenaemia, HLA-DR expression and neopterin levels did not change significantly after cell separation. No alteration of the number of T-cells with integrated proviral DNA copies (1/10(3) to 1/10(6)) could be detected in peripheral T-helper cells by PCR after lymphapheresis. We conclude that high yields of peripheral T-lymphocytes can be obtained by continuous flow lymphapheresis for cell-mediated immunotherapy, without deterioration of virological or immunological parameters in HIV-infected patients. The separated T-cells are fully replaced from extravascular pools after 1 h. Cell Separation/METHODS CD4-CD8 Ratio Enzyme-Linked Immunosorbent Assay Human HIV Antigens/IMMUNOLOGY HIV Infections/IMMUNOLOGY/THERAPY/VIROLOGY Immunotherapy, Adoptive Leukapheresis Lymphocyte Count Support, Non-U.S. Gov't T-Lymphocyte Subsets/IMMUNOLOGY T-Lymphocytes/IMMUNOLOGY T-Lymphocytes, Helper-Inducer/IMMUNOLOGY T-Lymphocytes, Suppressor-Effector/IMMUNOLOGY JOURNAL ARTICLE

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Information in this article was accurate in April 30, 1995. The state of the art may have changed since the publication date. This material is designed to support, not replace, the relationship that exists between you and your doctor. Always discuss treatment options with a doctor who specializes in treating HIV.