نتایج جستجو برای: t helper lymphocytes
تعداد نتایج: 739678 فیلتر نتایج به سال:
Peripheral blood lymphocytes from normal donors and patients with chronic lymphocytic leukemia. B-cell type. were purified into T. helper T. and suppressor T lymphocytes by fluorescence-activated cell sorting using OKT3. 0KT4. and 0KT8 monoclonal antibodies. The maximum response of the purified subpopulations to stimulation by phytohemagglutinin (PHA) was determined by measuring the production ...
Altered immune status of blood leukocytes is a general phenomenon observed in adult patients with sepsis or septic shock. This is also the case in children with septic shock for both T helper 1 and T helper 2 lymphocytes, as demonstrated by their reduced ex vivo cytokine production upon activation by phytohemagglutinin.
Ly and Ia antigen phenotypes of T cells involved in delayed-type hypersensitivity and in suppression
The Ly and Ia phenotypes of T lymphocytes involved in different functions were characterized by the use of specific antisera. T cells responsible for delayed-type hypersensitivity (DTH) and for helper functions were found to be Ly-1+,2- in contrast to cytotoxic T cells and T cells responsible for suppression of antibody responses which were Ly-1-,2+. Unlike some primed helper cells, T cells inv...
T-lymphocyte helper and suppressor functions were assessed in 61 hemophilia patients. Twenty one patients were HIV-negative (Group 1), 27 were HIV-positive without having AIDS-related complex (ARC)/AIDS (Group 2), and 13 had ARC/AIDS (Group 3). T, CD4-positive, or CD8-positive T lymphocytes were cocultured with B lymphocytes and pokeweed mitogen for 6 days and immunoglobulin producing cells wer...
Autoreactive CD4+ T lymphocytes play a vital role in the pathogenesis of multiple sclerosis and its animal model, experimental autoimmune encephalomyelitis. Since the discovery of T helper 17 cells, there is an ongoing debate whether T helper 1, T helper 17 or both subtypes of T lymphocytes are important for the initiation of autoimmune neuroinflammation. We examined peripheral blood CD4+ cells...
The nature of the helper lymphocytes in lymphocytosis-promoting factor (LPF)-induced proliferation was explored. Removal of macrophages from adherent splenocytes by either carbonyl-iron incubation or passage through Sephadex G-10 columns did not affect their synergistic function. Nor did cytolysis with Thy-1.2 antiserum and complement. The helper cells were found to be surface immunoglobulin-po...
Comparison of Th1/Th2 and Treg/Th17 ratios between wet and dry cupping therapies in Persian medicine
Objective: In Persian medicine (PM), wet-cupping therapy (WCT) is the most utilized approach. WCT is mostly done between the shoulders, which is referred to as “hejamt-e-aam” in the Persian language. CD4+T cells also refer to T helper lymphocytes play a critical role in the immune system. Naïve CD4+ T cells differentiate into at least four subsets, T helper 1 (Th1), T helper 2 (Th2), T helper 1...
Polyclonal activation of murine splenic B lymphocytes by lipopolysaccharide was found to be subject to regulation by helper and suppressor influences from T lymphocytes. In the normal adult spleen, only helper influences were exercised over polyclonal B cell activation; this influence is a property of Lyt-l(+)23(-) slowly sedimenting T cells. Suppressive influence evidently is latent, for it ex...
Thymocytes cultured with irradiated, allogeneic stimulator cells yield no cytotoxic effector cells after a period in culture. If, however, a population of irradiated spleen cells syngeneic to the responder cells are added to these cultures, cytotoxicity is generated. The helper activity present in the irradiated syngeneic spleen cells was found to be mediated by a cell bearing theta antigens. F...
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