CD8 cell


Also found in: Thesaurus, Medical, Legal, Financial, Encyclopedia.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.CD8 cell - T cell with CD8 receptor that recognizes antigens on the surface of a virus-infected cell and binds to the infected cell and kill it
T cell, T lymphocyte - a small lymphocyte developed in the thymus; it orchestrates the immune system's response to infected or malignant cells
References in periodicals archive ?
DM cells from invasive tumor margins showed increased CD8 cell density PD-L1 expression.
Flow cytometric immunophenotyping results before and after human papillomavirus vaccination in a patient with splenectomy * Cell type (reference range) Results before vaccination ([dagger]) CD3 cell count Absolute (690-2,540 cells/[micro]L) 2,729 cells/[micro]L Relative (55%-84%) 50% CD4 cell count Absolute (410-1,590 cells/[micro]L) 602 cells/[micro]l Relative (31%-60%) 11% CD8 cell count Absolute (190-1,140 cells/[micro]l) 2,149 cells/[micro]L 40% Relative (13%-41%) CD4/CD8 ratio (0.
Laboratory data used for comparison between the two groups were CD4 and CD8 cell counts, hemoglobin levels, and absolute number of lymphocytes.
14) To underpin this proposal, he cites two studies-an ex vivo analysis and in vitro model of CD8 cells showing close correlation between activation level and CD8 cell differentiation (as an indicator of "replicative senescence") (15) and a comparison of CD4- and CD8-cell markers in 20 fast progressors and 40 slow progressors linking "a shift in the T-cell population toward an aged conformation" in people with more advanced infection.
Multivitamins also led to significantly higher CD4 and CD8 cell counts, significantly lower viral loads, significantly fewer oral and gastrointestinal manifestations, and significantly reduced RR of progression to stage 3 or greater disease (RR 0.
It was recognised from the earliest reports of AIDS that the CD4 cell depletion was also accompanied by a CD8 cell increase (with a resulting inversion of the normal CD4/CD8 ratio).
CD8 cell counts increased by an average of 181 cells/mm3 in the patients smoking marijuana, by 60 cells/mm3 in those receiving dronabinol, and by 18 cells/mm3 in those receiving placebo.
In addition to a rapid onset of effect, T cell expansion was sustained with IL-7, all patients having an improvement from baseline in their CD4 and CD8 cell counts at Week 48.
SAN FRANCISCO -- A randomized trial of smoked marijuana and dronabinol in HIV-positive patients revealed significant weight gain in both experimental groups and significant increases in CD8 cell counts in the marijuana group.
A CD8 cell can directly kill a target through the elaboration of different molecules, or it can indirectly suppress virus either through the chemokines or other factors that block virus.
While most scientists have focused on the declining number of CD4 cells that follows untreated HIV infection, others have documented that CD8 cell counts also fall over time, especially late in an infection.
In addition, no spikes in viral load, significant changes in CD4 or CD8 cell counts, or manifestations of autoimmunity were observed during or after injections.