Words similar to cytolytic
Example sentences for: cytolytic
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The involvement of Rho GTPases in regulating integrin dependent events such as leukocyte homotypic aggregation and in chemokine upregulation of integrin-mediated adhesion has recently been identified [ 18 19 ] . ADP-ribosylation of Rho in neutrophils by treatment with C3 not only inhibits cellular locomotion, but augments chemoattractant induced actin polymerization [ 20 21 ] . Moreover, inactivation of Rho in monocytic cells leads to accelerated formation of filopodia, and it has been proposed that Rho is a negative regulator of actin polymerization within this cell type [ 22 ] . Active Rho is also required for normal morphology, motility, and cytolytic activity of IL-2 activated NK cells [ 23 24 ] . We and others have demonstrated the importance of Rho in T lymphocyte activation [ 25 26 ] . Given the role played by Rho in the regulation of actin microfilaments in other cell types, and the indispensability of a functional actin cytoskeleton in lymphocyte motility and activation, it is of importance to study Rho's role in the regulation of T lymphocyte integrin function and maintenance of cytoskeletal organization.
The large pores activated by MTX have been referred to as cytolytic/oncotic pores, or COP, since their activation ultimately leads to the release of lactate dehydrogenase (LDH), an indication of necrotic or oncotic cell death [ 9].
An intact actin cytoskeleton is required for sustained signals leading to T cell activation [ 1 ] . T helper and cytolytic effector cells reorient their intracellular components for vectorial secretion of cytokines [ 2 ] or cytolytic components [ 3 ] via cytoskeletal dependent mechanisms.
Thus, BAECs are particularly sensitive to the cytolytic effects of MTX.
Thus by inducing migration and interaction with EC, IL-12 regulates crucial determinants of NK cell recruitment in tissues [ 20 ] . It is believed that IL-12 plays an instrumental role in tilting the immune response in favor of T helper type 1 by generation of Th1 cells and consequently initiates CMI [ 28 ] . Since IL-12 enhances cytotoxicity and augments proliferation by antigen specific T cells and NK cells, IL-12 may facilitate antigen specific and nonspecific cytotoxic immune defense against intracellular pathogens such as M. tuberculosis . An intriguing property of IL-12 is its capacity to induce proliferation by cytolytic T cell only upon co-stimulation with antigen.
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