Abstract:
:Platelet-activating factor (PAF) has previously been shown to stimulate intracellular signal transductional events similar to the macrophage tumoricidal activators interferon-gamma (IFN-gamma) and lipopolysaccharide (LPS). Macrophages stimulated with IFN-gamma and LPS utilize various cytolytic mediators in order to kill tumor cells. However, PAF has been shown to only induce and enhance tumor necrosis factor-alpha (TNF alpha)-mediated cytolysis by macrophages. Therefore, the purpose of this study was to determine whether PAF, in comparison with IFN-gamma and LPS, could stimulate macrophages for both TNF alpha- and non-TNF alpha-mediated tumoricidal activity. For this, the activation of macrophages for a cytolytic response was characterized by the production of TNF alpha and nitric oxide (NO2-), as well as, their ability to kill select tumor cells. PAF together with IFN-gamma stimulated macrophage secretion of NO2-. In addition, PAF enhanced IFN-gamma- and LPS-stimulated NO2- production. PAF, together with IFN-gamma, also activated macrophages for tumoricidal activity against TNF alpha-resistant tumor cells. In assays to determine the temporal sequence of activation, increased tumor cell cytolysis was observed only when macrophages were first treated with IFN-gamma. Moreover, PAF enhanced macrophage tumoricidal activity when added with LPS and IFN-gamma. With respect to TNF alpha production, macrophages activated with high concentrations of PAF stimulated significant levels of TNF alpha compared to macrophages without PAF. A similar level was observed following multiple additions of a lower concentration of PAF. Also, PAF induced macrophage cytolytic activity against a TNF alpha-sensitive tumor cell. In addition, PAF significantly enhanced LPS-induced TNF alpha production. Thus, PAF can play a modulatory role in the activation for non-TNF alpha-mediated tumoricidal activity of macrophages.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
Howard AD,Erickson KLdoi
10.1006/cimm.1995.1148subject
Has Abstractpub_date
1995-08-01 00:00:00pages
105-12issue
1eissn
0008-8749issn
1090-2163pii
S0008-8749(85)71148-3journal_volume
164pub_type
杂志文章abstract::Neutrophils exhibit intrinsic sinusoidal metabolite concentration oscillations of 3 min in resting cells and an additional approximately 10- or 20-s oscillation in migrating/adhering cells. To better understand immune complex (IC)-mediated leukocyte activation, we have studied neutrophil metabolic oscillations in the ...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1999.1481
更新日期:1999-05-25 00:00:00
abstract::The effect of prior maternal immunization on the murine offspring response to subsequent immunization with hen egg-white lysozyme was examined. Adult female A/J mice were immunized with 100 micrograms HEL-CFA intraperitoneally 10-27 weeks before conception. The offspring of these experimental female mice were then imm...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1123
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abstract::Spontaneously cytotoxic cells possessing specificity and having a complex pattern of reactivity directed at least partly against self-determinants develop by the age of 10 weeks in the autoimmune mouse strain MRL/Mp-lpr/lpr (MRL-lpr) and by the age of 6 months in C57BL/6-lprl/lpr. Similar effector cells do not develop...
journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(89)90090-7
更新日期:1989-09-01 00:00:00
abstract::Patients with head and neck cancer often have decreased local or regional immunocompetence. Lymphocytes obtained from tumor-involved or -uninvolved lymph nodes (LNL) of these patients showed low or undetectable levels of antitumor cytotoxicity and low proliferative responses in vitro to interleukin 2 (IL2) or mitogens...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90286-z
更新日期:1990-10-15 00:00:00
abstract::The kinetics of viability of lymph node and spleen cells of mice genetically selected for "high" or "low" in vitro lymphocyte responsiveness to PHA were studied in PHA or PPD-stimulated short-term cultures. Lo/PHA cells were found to be less viable than Hi/PHA cells in unstimulated control cultures. PHA improved the v...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90008-4
更新日期:1983-04-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1998-05-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90395-3
更新日期:1986-02-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1987-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:2015-09-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1995.1128
更新日期:1995-07-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90156-5
更新日期:1986-09-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1998.1394
更新日期:1998-12-15 00:00:00
abstract::Inflammatory bowel disease (IBD), including ulcerative colitis (UC) and Crohn's disease (CD), is a chronically intestinal autoimmune disease, the pathological mechanisms of which are not very clear. Wild type p-53 induced phosphatase 1 (Wip1), a serine/threonine protein phosphatase, has been reported to negatively reg...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2016.07.012
更新日期:2016-12-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2015.12.009
更新日期:2016-04-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(86)90296-0
更新日期:1986-04-01 00:00:00
abstract::Interleukin 4 (IL-4)-induced IgE production by normal peripheral blood mononuclear cells (PBMC) and E- cells (PBMC partially depleted of T cells) was significantly enhanced by leukotriene B4(LTB4) in a dose-dependent manner, whereas LTB4 by itself was not effective for IgE production. The potentiating effect of LTB4 w...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1158
更新日期:1994-06-01 00:00:00
abstract::Daudi Burkitt's lymphoma cells stimulate the proliferation of Vgamma2 Vdelta2 T cells in human peripheral blood mononuclear cells (PBMC). Transfection studies have established that the gammadelta T cell receptor is sufficient for recognition of a ligand associated with Daudi cells. Since other studies have demonstrate...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1996.0289
更新日期:1996-11-25 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(91)90167-a
更新日期:1991-12-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2011.01.005
更新日期:2011-01-01 00:00:00
abstract:OBJECTIVE:Many CD95-expressing cells don't always undergo apoptosis after stimulation with CD95 ligation. The purpose of this paper is to investigate the role of expression of CD95 (Fas/Apo1) on inflammatory response in fibroblast-like synoviocytes (FLS) obtained from rheumatoid arthritis (RA) and to evaluate the role ...
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更新日期:2014-08-01 00:00:00
abstract::Seeking common abnormalities in mice genetically predisposed to lupus-like autoimmune disease, we investigated (1) the ontogeny of Ia antigens (I-A/I-E) on the surfaces of resident peritoneal macrophages (rpM phi) of lupus and normal mice, (2) spontaneous and lectin-induced in vitro production of M phi-stimulating fac...
journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1984-08-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2008.04.003
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1169
更新日期:1993-07-01 00:00:00
abstract::7 anterior gradient homolog 2 (AGR2)-inhibited different molecular mutual positive correlation network was constructed in lung adenocarcinoma compared with human normal adjacent tissues by 17 overlapping molecules of 358 GRNInfer and 19 Pearson (AGR2 CC⩽-0.25). Based on GO, KEGG, GenMAPP, BioCarta and disease database...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2014.05.008
更新日期:2014-07-01 00:00:00
abstract::Due to their immunomodulatory properties, adipose tissue (AT) and Wharton's Jelly (WJ) constitute valuable alternatives to BM as sources of MSCs for managing graft-versus-host disease. To ensure the efficiency of AT- and WJ-MSCs implies the characterization of their immunomodulatory functions in comparison to those of...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2010.06.006
更新日期:2010-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1220
更新日期:1993-10-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/j.cellimm.2018.06.002
更新日期:2018-09-01 00:00:00
abstract::Endogenous retroviral superantigens such as vSAG-7 are highly stimulatory for T cells through interaction with the T cell receptor on the basis of V beta usage. Priming of adult MMTV 7-negative mice with vSAG-7-expressing cells has been shown to result in peripheral V beta 6/CD4+ T cell activation followed by toleranc...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1995.1164
更新日期:1995-09-01 00:00:00
abstract::The kinetics and quality of the alloimmune reaction were studied in CBA (H-2k) mice treated for passive enhancement of tumor allografts (Sa 1 indigenous of A/J (H-2a or H-2k/d) mice). Serum samples of treated animals were tested for their biological properties relevant to different antibody isotypes in vitro (hemagglu...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(85)90306-5
更新日期:1985-10-01 00:00:00