PMID- 19607684 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20091214 LR - 20211020 IS - 1742-6405 (Electronic) IS - 1742-6405 (Linking) VI - 6 DP - 2009 Jul 16 TI - Polychromatic immunophenotypic characterization of T cell profiles among HIV-infected patients experiencing immune reconstitution inflammatory syndrome (IRIS). PG - 16 LID - 10.1186/1742-6405-6-16 [doi] AB - OBJECTIVE: To immunophenotype CD4+ and CD8+ T cell sub-populations in HIV-associated immune reconstitution inflammatory syndrome (IRIS). DESIGN: Nested case-control immunological study. METHODS: ART-naive HIV-infected patients were prospectively observed for IRIS during the first 6 months of ART. Twenty-two IRIS cases and 22 ART-duration matched controls were sampled for T cell immunophenotyping. RESULTS: IRIS cases demonstrated significantly lower CD4 cell counts compared to controls (baseline: 79 versus 142, p = 0.02; enrollment: 183 versus 263, p = 0.05, respectively) with no differences in HIV RNA levels. Within CD4+T cells, cases exhibited more of an effector memory phenotype compared to controls (40.8 versus 27.0%, p = 0.20), while controls trended towards a central memory phenotype (43.8 versus 30.8%, p = 0.07). Within CD8+ T cells, controls exhibited more central memory (13.9 versus 7.81%, p = 0.01, respectively) and effector (13.2 versus 8.8%, p = 0.04, respectively) phenotypes compared to cases, whereas cases demonstrated more terminal effectors than controls (28.8 versus 15.1%, p = 0.05). Cases demonstrated increased activation of CD8+ T cell effector memory, terminal effector, and effector subsets than controls (p = 0.04, 0.02, and 0.02, respectively). CONCLUSION: CD4+ and CD8+ T cell subset maturational phenotypes were heterogeneous among IRIS cases and controls. However, IRIS cases demonstrated significant increases in activation of CD8+ T cell effector subpopulations. FAU - Murdoch, David M AU - Murdoch DM AD - Division of Pulmonary and Critical Care Medicine, Duke University Medical Center, Durham, North Carolina, USA. dmurdoch@email.unc.edu FAU - Suchard, Melinda S AU - Suchard MS FAU - Venter, Willem D F AU - Venter WD FAU - Mhlangu, Patrick AU - Mhlangu P FAU - Ottinger, Janet S AU - Ottinger JS FAU - Feldman, Charles AU - Feldman C FAU - Van Rie, Annelies AU - Van Rie A FAU - Glencross, Deborah K AU - Glencross DK FAU - Stevens, Wendy S AU - Stevens WS FAU - Weinhold, Kent J AU - Weinhold KJ LA - eng GR - D71 TW006906/TW/FIC NIH HHS/United States GR - K01 TW008005/TW/FIC NIH HHS/United States GR - P30 AI050410/AI/NIAID NIH HHS/United States GR - P30 AI064518/AI/NIAID NIH HHS/United States PT - Journal Article DEP - 20090716 PL - England TA - AIDS Res Ther JT - AIDS research and therapy JID - 101237921 PMC - PMC2723132 EDAT- 2009/07/18 09:00 MHDA- 2009/07/18 09:01 PMCR- 2009/07/16 CRDT- 2009/07/18 09:00 PHST- 2009/03/03 00:00 [received] PHST- 2009/07/16 00:00 [accepted] PHST- 2009/07/18 09:00 [entrez] PHST- 2009/07/18 09:00 [pubmed] PHST- 2009/07/18 09:01 [medline] PHST- 2009/07/16 00:00 [pmc-release] AID - 1742-6405-6-16 [pii] AID - 10.1186/1742-6405-6-16 [doi] PST - epublish SO - AIDS Res Ther. 2009 Jul 16;6:16. doi: 10.1186/1742-6405-6-16.