PMID- 10361239 OWN - NLM STAT- MEDLINE DCOM- 19990623 LR - 20190513 IS - 0009-9104 (Print) IS - 1365-2249 (Electronic) IS - 0009-9104 (Linking) VI - 116 IP - 3 DP - 1999 Jun TI - Immunological changes in peripheral blood and in lymphoid tissue after treatment of HIV-infected subjects with highly active anti-retroviral therapy (HAART) or HAART + IL-2. PG - 486-92 AB - This study presents the immunophenotypic and functional analysis of lymphocyte subsets obtained from peripheral blood and lymphoid tissue from HIV+ individuals treated with highly active anti-retroviral therapy (HAART) alone or in combination with 6 million units international (MUI) s.c. IL-2. Before treatment, the HIV+ patients had reduced CD4 and increased CD8 values in the peripheral blood and lymphoid tissue and impaired cytokine production by peripheral blood mononuclear cells (PBMC). After 24 weeks of treatment, all the HIV+ patients demonstrated increased CD4 values in peripheral blood and lymphoid tissue. The use of IL-2 did not promote an additional CD4 expansion compared with HAART alone; increased 'naive' and CD26+ CD4 cells and reduced CD8 cells were found in the peripheral blood and lymphoid tissue of the IL-2-treated, but not of the HAART-treated patients. Both types of treatment induced a significant reduction of the CD8/CD38+ cells. While HAART alone had negligible effects on cytokine production by PBMC, the combined use of HAART + IL-2 was unable to increase the endogenous production of IL-2, but caused an increase of IL-4, IL-13 and interferon-gamma (IFN-gamma) and a reduction of monocyte chemoattractant protein-1 (MCP-1) production. These data suggest that, although in this schedule IL-2 has minimal efficacy on CD4 recovery when compared with HAART alone, it produces an increase of 'naive' and CD26+ CD4 cells and a partial restoration of cytokine production. These data may be used to better define clinical trials aiming to improve the IL-2-dependent immunological reconstitution of HIV-infected subjects. FAU - Zanussi, S AU - Zanussi S AD - Department of Microbiology, Immunology & Virology, Centro di Riferimento Oncologico IRCCS, Aviano, Ospedale di Pordenome, Italy. FAU - Simonelli, C AU - Simonelli C FAU - Bortolin, M T AU - Bortolin MT FAU - D'Andrea, M AU - D'Andrea M FAU - Crepaldi, C AU - Crepaldi C FAU - Vaccher, E AU - Vaccher E FAU - Nasti, G AU - Nasti G FAU - Politi, D AU - Politi D FAU - Barzan, L AU - Barzan L FAU - Tirelli, U AU - Tirelli U FAU - De Paoli, P AU - De Paoli P LA - eng PT - Clinical Trial PT - Comparative Study PT - Journal Article PT - Randomized Controlled Trial PL - England TA - Clin Exp Immunol JT - Clinical and experimental immunology JID - 0057202 RN - 0 (Anti-HIV Agents) RN - 0 (Cytokines) RN - 0 (Interleukin-2) SB - IM MH - Adult MH - Anti-HIV Agents/*therapeutic use MH - CD4 Lymphocyte Count MH - CD4-CD8 Ratio MH - CD4-Positive T-Lymphocytes/immunology MH - CD8-Positive T-Lymphocytes/immunology MH - Cytokines/biosynthesis MH - Female MH - HIV Infections/*drug therapy/immunology/*therapy MH - Humans MH - In Vitro Techniques MH - Interleukin-2/*therapeutic use MH - Lymphoid Tissue/immunology MH - Male MH - Middle Aged MH - Phenotype PMC - PMC1905321 EDAT- 1999/06/11 00:00 MHDA- 1999/06/11 00:01 PMCR- 2000/06/01 CRDT- 1999/06/11 00:00 PHST- 1999/06/11 00:00 [pubmed] PHST- 1999/06/11 00:01 [medline] PHST- 1999/06/11 00:00 [entrez] PHST- 2000/06/01 00:00 [pmc-release] AID - 10.1046/j.1365-2249.1999.00927.x [doi] PST - ppublish SO - Clin Exp Immunol. 1999 Jun;116(3):486-92. doi: 10.1046/j.1365-2249.1999.00927.x.