نتایج جستجو برای: cd4 cd8 t
تعداد نتایج: 719548 فیلتر نتایج به سال:
The relative roles of CD4+ and CD8+ T cells in contact hypersensitivity responses have not been fully solved, and remain an important question. Using an adoptive transfer model, we investigated the role of the respective T cell subset. Magnetic bead separated CD4+ and CD8+ T cells from oxazolone sensitized C57BL/6 mice were transferred into RAG-/- mice, followed by hapten challenge and analysis...
BACKGROUND There is a growing body of evidence to suggest that CD8+ T lymphocytes contribute to local allergen-induced eosinophilic inflammation. Since bone marrow (BM) responses are intricately involved in the induction of airway eosinophilia, we hypothesized that CD8+ T lymphocytes, as well as CD4+ T lymphocytes, may be involved in this process. METHODS Several approaches were utilized. Fir...
Th1-like (IL-2, IFN-gamma) and Th2-like (IL-4, IL-6, and IL-10) cytokines were examined in CD4+ and CD8+ T cells in children with autism. Intracellular cytokines were measured using specific antibodies to various cytokines and anti-CD4 or anti-CD8 monoclonal antibodies by FACScan. Proportions of IFN-gamma+CD4+ T cells and IL-2+CD4+ T cells (Th1), and IFN-gamma+CD8+ and IL-2+CD8+ T cells (TC1) w...
We generated 1,090 ATAC-seq and 1,057 T-cell RNA-seq libraries from 153 subjects, derived 8 flow-sorted subsets (defined by CD4/CD8, CLA+/ CLA-, 0/24h CD3/CD28 stimulation). Effects of activation skin-homing were analyzed DESeq2. After peak calling, 78,234 consensus peaks present in ≥ 30 libraries. A Wald test examining simple main effects identified 9,072, 3,934, 21,174 as differentially acces...
Approximately 2% to 3% of circulating human T cells co-express CD4 and CD8 (CD4+, CD8+) T-cell antigens. These CD4+, CD8+ cells may be immature precursors that function to replenish functional T-cell subsets. We detected a very high level of CD4+, CD8+ cells in the peripheral blood lymphocytes of a healthy white male, ranging from 21% to 36%. The morphology of his peripheral blood lymphocytes w...
سابقه و هدف: مایکوتوکسین t-2 با آلوده سازی غلات و علوفه موجب مسمومیت انسان و دام می شود و روی سلول های سیستم ایمنی نیز اثرات جدی بر جای می گذارد. هدف این مطالعه، بررسی سینتیک تغییرات جمعیت لنفوسیتی خون محیطی موش پس از تزریق سم t-2 بود. مواد و روشها: این مطالعه از نوع تجربی است. دز تحت کشنده سم t-2 برای موش تعیین و به گروه های مختلف تزریق شد. در ساعات 12، 24، 48 و 72 پس از تزریق، از موش ها خون گ...
Although extensive studies have demonstrated the functional impairment of antigen-specific CD4(+) and CD8(+) T-cells during chronic hepatitis C virus (HCV) infection, the functional status of global CD4(+) and CD8(+) T-cells remains unclear. In this report, we recruited 42 long-term (~20 years) treatment-naïve chronic HCV (CHC) patients and 15 healthy donors (HDs) to investigate differences in ...
Previously we have shown that CD8(+) T cells are critical for containment of simian immunodeficiency virus (SIV) viremia and that rapid and profound depletion of CD4(+) T cells occurs in the intestinal tract of acutely infected macaques. To determine the impact of SIV-specific CD8(+) T-cell responses on the magnitude of the CD4(+) T-cell depletion, we investigated the effect of CD8(+) lymphocyt...
The role of CD4 T cell help in primary and secondary CD8 T cell responses to infectious pathogens remains incompletely defined. The primary CD8 T response to infections was initially thought to be largely independent of CD4 T cells, but it is not clear why some primary, pathogen-specific CD8 T cell responses are CD4 T cell dependent. Furthermore, although the generation of functional memory CD8...
T cells modulate neointima formation after arterial injury but the specific T cell population that is activated in response to arterial injury remains unknown. The objective of the study was to identify the T cell populations that are activated and modulate neointimal thickening after arterial injury in mice. Arterial injury in wild type C57Bl6 mice resulted in T cell activation characterized b...
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