title: IL-23 and IFN-gamma deficiency in immunodeficient HIV patients who achieved a long-term increase in CD4 T-cell counts on highly active antiretroviral therapy.
abstract: The pathogenesis of HIV infection and the susceptibility to opportunistic infections has been associated with poor type 1 cytokine production. In severely immunodeficient HIV patients who achieved increased CD4 T-cell counts on longterm highly active antiretroviral therapy, we observed reduced expression of IL-23p19 and IFN-gamma messenger RNA. Impaired IL-23-induced IFN-gamma production by memory T cells might thus contribute to opportunistic infections in a minority of patients with substantial CD4 T-cell recovery.
authors.affiliation: Department of Clinical Immunology and Biochemical Genetics, Royal Perth Hospital, Western Australia.
authors.forename: Silvia
authors.initials: S
authors.lastname: Lee
authors.forename: Martyn A H
authors.initials: MA
authors.lastname: French
authors.forename: Patricia
authors.initials: P
authors.lastname: Price
mesh_terms: D000328:Adult; D023241:Antiretroviral Therapy, Highly Active; D018791:CD4 Lymphocyte Count; D016022:Case-Control Studies; D015658:HIV Infections / Q000188:drug therapy / Q000276:immunology*; D006801:Humans; D007371:Interferon-gamma / Q000172:deficiency* / Q000235:genetics; D053759:Interleukin-23; D053760:Interleukin-23 Subunit p19; D007378:Interleukins / Q000172:deficiency* / Q000235:genetics; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D012333:RNA, Messenger / Q000032:analysis; D018894:Reverse Transcriptase Inhibitors / Q000627:therapeutic use
chemical_list: C508840:IL23A protein, human; D053759:Interleukin-23; D053760:Interleukin-23 Subunit p19; D007378:Interleukins; D012333:RNA, Messenger; D018894:Reverse Transcriptase Inhibitors; D007371:Interferon-gamma