Abstract:
:We used three-colour cytometry to analyse intracellular cytokine production in activated whole blood cultures derived from patients with HIV-1 infection. We assessed mitogen-induced IL-2, IL-4 and IFN-gamma production from T cells as possible markers of immune dysfunction. The percentages of T cells staining for IL-2 were significantly reduced in stimulated cultures from HIV+ individuals relative to normal controls (P<0.0001); this reduction was observed in both the CD4+ and the CD8+ subsets. IL-2 production was significantly reduced in CD4+ T cells from HIV+ individuals clinically classified as symptomatics compared with HIV+ asymptomatics (P<0.001); in addition, production of IL-2 inversely correlated with viral load (r2=0.832). On the other hand, HIV+ individuals showed significantly more T cells staining positive for IFN-gamma (P<0.0001); subset analysis identified these T cells as CD8+. Increased IFN-gamma production in the CD8+ T cell subset of HIV+ individuals correlated neither with clinical status nor with plasma viral load. IL-4 staining in activated T cells was low (<5%) and no differences were observed between HIV+ and control groups. Three-colour FACS analysis of whole blood provides a sensitive, rapid and relatively easy means to detect cytokine profiles within T cell subpopulations. Only small volumes of blood are required (0.5 ml), since there is no need for cell isolation, making it more practical than ELISA or reverse transcriptase-polymerase chain reaction (RT-PCR) for the analysis of immune function in HIV+ individuals. This technique could therefore play a role in mapping the dynamics and extent of immune recovery in AIDS patients undergoing triple combination therapy.
journal_name
Clin Exp Immunoljournal_title
Clinical and experimental immunologyauthors
Westby M,Marriott JB,Guckian M,Cookson S,Hay P,Dalgleish AGdoi
10.1046/j.1365-2249.1998.00505.xsubject
Has Abstractpub_date
1998-02-01 00:00:00pages
257-63issue
2eissn
0009-9104issn
1365-2249journal_volume
111pub_type
杂志文章abstract::Dendritic cells (DCs) are powerful antigen-presenting cells capable of maintaining peripheral tolerance. The possibility to generate tolerogenic DCs opens new therapeutic approaches in the prevention or remission of autoimmunity. There is currently no treatment inducing long-term tolerance and remission in type 1 diab...
journal_title:Clinical and experimental immunology
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journal_title:Clinical and experimental immunology
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journal_title:Clinical and experimental immunology
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pub_type: 杂志文章
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更新日期:1990-09-01 00:00:00
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更新日期:2007-12-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1979-04-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
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更新日期:2007-09-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1989-02-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1977-01-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1982-09-01 00:00:00
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pub_type: 杂志文章
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
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journal_title:Clinical and experimental immunology
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1988-05-01 00:00:00
abstract::Autoantibodies inhibiting the activity of the metalloproteinase, ADAMTS13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13), underlie the pathogenesis of thrombotic thrombocytopenic purpura (TTP). Rituximab (RTX) combined with plasma-exchange (PEX) is an effective treatment in TTP. Pa...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
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journal_title:Clinical and experimental immunology
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更新日期:1999-10-01 00:00:00
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journal_title:Clinical and experimental immunology
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
abstract::Protein kinases mediate protein phosphorylation, which is a fundamental component of cell signalling, with crucial roles in most signal transduction cascades: from controlling cell growth and proliferation to the initiation and regulation of immunological responses. Aberrant kinase activity is implicated in an increas...
journal_title:Clinical and experimental immunology
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abstract::More than 11 genetic causes of severe combined immunodeficiency (SCID) have been identified, affecting development and/or function of T lymphocytes, and sometimes B lymphocytes and natural killer (NK) cells. Deletion of 22q11.2 is associated with immunodeficiency, although less than 1% of cases are associated with T-B...
journal_title:Clinical and experimental immunology
pub_type: 杂志文章
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更新日期:2008-07-01 00:00:00