cytotoxic T cell

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Related to CD8 T cell: CD4 T cells, Memory T cells

cytotoxic T cell

[¦sīd·ə‚täk·sik ′tē ‚sel]
(immunology)
A type of T cell which protects against pathogens that invade host cell cytoplasm, where they cannot be bound by antibodies, by recognizing and killing the host cell before the pathogens can proliferate and escape.
References in periodicals archive ?
In resource-limited settings this could provide a means of limiting cost by reducing expensive viral load testing, however, there is insufficient data to support the use of CD8 T cell activation measures to detect virological failures under HAART.
But don't be fooled: the virus is under tremendous selective pressure from the immune system and is trying (and largely succeeding) to stay at least a step ahead of neutralizing antibodies and CD8 T cells (and probably other aspects of the immune response).
ICL patients are a heterogeneous group that may display concurrent CD8 T cell, B cell, or natural killer (NK) T cell lymphocytopenia, and whose clinical manifestations range from asymptomatic to life-threatening infections, including opportunistic pathogens, such as Cryptococcus and non-tuberculous Mycobacteria, with a significant incidence of de novo malignancies and autoimmune phenomena (e.
the vast majority of the HAART treated patients never develop effective HIV specific CD4 and CD8 T cell responses, despite an optimal control of HIV replication and the recovery of a nearly normal CD4 T cell count.
11) Also, broad CD8 T cell responses to multiple HIV antigens were seen in a majority of patients.
For example, one study observed that CD8 T cell responses specific for the HIV envelope protein were restricted by HLA-Cw7 in LTNPs (Viral Immunol, 11:3, p.
During the peak of viremia, CD4 T cell counts dropped an average of 24% and CD8 T cell counts rose an average of 200%.
In addition to elevated CD4 and CD8 T cells, we also observed an increase in blood platelets, implying that TGF alpha activates early stem cells that subsequently differentiate into each of these cell types," continued Dr.
In turn, people with fewer CD8 T cells became more seriously ill.
Echinacea and Astragalus primarily stimulated CD8 T cells, and to a lesser extent CD4 T cells.
For example, CD4 T cells and CD8 T cells are 2 different types of T cells.