Human Immunodeficiency Syndromes Affecting Human Natural Killer Cell Cytolytic Activity
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منابع مشابه
Human Immunodeficiency Syndromes Affecting Human Natural Killer Cell Cytolytic Activity
Natural killer (NK) cells are lymphocytes of the innate immune system that secrete cytokines upon activation and mediate the killing of tumor cells and virus-infected cells, especially those that escape the adaptive T cell response caused by the down regulation of MHC-I. The induction of cytotoxicity requires that NK cells contact target cells through adhesion receptors, and initiate activation...
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Medullasin, a new serine protease found in bone marrow cells, increased markedly human natural killer cell activity. Whereas the natural killer cell activity measured immediately after the treatment with medullasin remained almost on the same level as the control, an incubation at 37 degrees C for several hours increased markedly the natural killer cell activity of the lymphocytes treated with ...
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Although it has been shown that killer cell immunoglobulin-like receptors (KIRs) on peripheral lymphocytes are upregulated by interleukin-2 (IL-2), which activates natural killer (NK) activity, it has not been demonstrated whether the expression of KIRs is related to NK activity. Therefore, we investigated the association between the KIR expression on lymphocytes and NK activity. CD158a/b expre...
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Recently it has been shown that the natural killer (NK)-target cell interaction results in an immediate burst of chemiluminescence. In this paper we investigated to apply chemilumines cence assay for the evaluation of human NK cell activities. Degrees of chemiluminescence were dependent on the concentration of lymphocytes or tar. get cells, but optimal concentrations of lymphocytes and target c...
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This study investigates the effect of steroid and polypeptide hormones on human NK cell activity in vitro. Solutions of hormones were incubated with normal peripheral blood cells in a 4 h cytotoxic assay against the NK-sensitive erythromyeloid cell line K562. The steroid hormones oestradiol, progesterone and testosterone did not exhibit a significant effect on K562 lysis at concentrations withi...
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ژورنال
عنوان ژورنال: Frontiers in Immunology
سال: 2014
ISSN: 1664-3224
DOI: 10.3389/fimmu.2014.00002