PMID- 20048679 OWN - NLM STAT- MEDLINE DCOM- 20100326 LR - 20200930 IS - 1944-7884 (Electronic) IS - 1525-4135 (Linking) VI - 53 IP - 3 DP - 2010 Mar TI - T-cell dysfunction in HIV-1-infected patients with impaired recovery of CD4 cells despite suppression of viral replication. PG - 303-10 LID - 10.1097/QAI.0b013e3181ca3f7c [doi] AB - INTRODUCTION: CD4 T-cell recovery is impeded in some HIVinfected patients despite successful combination antiretroviral therapy (cART) with suppressed HIV RNA. We hypothesized that T-cell dysfunction would be increased in these patients. METHODS: In the Danish HIV Cohort Study, we identified HIV-1-infected patients initiating cART with a CD4 cell count <100 cells per microliter, followed by HIV RNA <50 copies per milliliter for 3 years. Patients with a CD4 count <200 cells per microliter after 3 years were identified as cases; 42 patients with a CD4 count > or = 200 cells per microliter were selected as controls. Six-color flow cytometry was performed on whole blood. Cytokine levels in supernatants from whole blood stimulations were assessed. RESULTS: The case and control groups comprised 18 and 35 patients, respectively. Cases were older than controls (median: 54/46 years). The fraction of CD28+ cells was decreased among cases in the CD4+ and CD8+ T-cell subsets (P = 0.0014/P = 0.0349) and in the corresponding naive subsets (P = 0.0011/P , 0.0001). Cases had higher expression of human leukocyte antigen (HLA)-DR on naive CD4 and CD8 T cells (P = 0.0007/P = 0.0028). The production of interleukin (IL)-10 and IL-2 to phytohemagglutinin was decreased in cases (P < 0.0001/P = 0.019). CONCLUSIONS: Patients with impaired CD4 recovery shared a dysregulated T-cell phenotype with low CD28, high HLA-DR expression, and low IL-2 and IL-10 production. FAU - Erikstrup, Christian AU - Erikstrup C AD - Department of Clinical Immunology, Aarhus University Hospital, Skejby, Brendstrupgaardsvej 100, DK-8200 Aarhus N, Denmark. christian@erikstrup.org FAU - Kronborg, Gitte AU - Kronborg G FAU - Lohse, Nicolai AU - Lohse N FAU - Ostrowski, Sisse Rye AU - Ostrowski SR FAU - Gerstoft, Jan AU - Gerstoft J FAU - Ullum, Henrik AU - Ullum H LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - J Acquir Immune Defic Syndr JT - Journal of acquired immune deficiency syndromes (1999) JID - 100892005 RN - 0 (Anti-HIV Agents) RN - 0 (CD28 Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (Interleukin-2) RN - 130068-27-8 (Interleukin-10) SB - IM MH - Adult MH - Anti-HIV Agents/*therapeutic use MH - CD28 Antigens/analysis MH - CD4 Lymphocyte Count MH - CD4-Positive T-Lymphocytes/chemistry/*immunology MH - Denmark MH - Female MH - Flow Cytometry MH - HIV Infections/*drug therapy/*immunology MH - HLA-DR Antigens/analysis MH - Humans MH - Interleukin-10/metabolism MH - Interleukin-2/metabolism MH - Male MH - Middle Aged MH - *Viral Load EDAT- 2010/01/06 06:00 MHDA- 2010/03/27 06:00 CRDT- 2010/01/06 06:00 PHST- 2010/01/06 06:00 [entrez] PHST- 2010/01/06 06:00 [pubmed] PHST- 2010/03/27 06:00 [medline] AID - 10.1097/QAI.0b013e3181ca3f7c [doi] PST - ppublish SO - J Acquir Immune Defic Syndr. 2010 Mar;53(3):303-10. doi: 10.1097/QAI.0b013e3181ca3f7c.