Abstract:
:In the present study we show that the opioid peptide beta-endorphin (beta-End) enhances Ia expression on murine B cells in cultures of unseparated spleen cells, mediated by low concentrations of IL-4 in the absence of antigenic or mitogenic stimulation. Since this effect was not found with purified B cells and no enhancement of IL-4 receptor expression on B cells could be observed, we studied the effect of beta-End on IL-4 production. To this end, purified CD4+ T cells were stimulated with suboptimal concentrations of Con A in the presence of irradiated spleen cells. It was indeed shown that beta-End enhances IL-4 production. To establish the role of macrophages in this process, we measured IL-1 and IL-6 production under the influence of beta-End. Splenic adherent cells as well as peritoneal macrophages produced higher levels of IL-1 and IL-6 in response to beta-End, whereas IL-1 was shown to enhance Ia expression similar to beta-End. Using anti-IL-6 it was demonstrated that IL-6 was required for the stimulation of Ia expression by beta-End. It is concluded that a local increase in beta-End may result in upregulation of Ia expression on B cells, thereby most likely improving their antigen-presenting capacity.
journal_name
Cell Immunoljournal_title
Cellular immunologyauthors
van den Bergh P,Rozing J,Nagelkerken Ldoi
10.1006/cimm.1993.1146subject
Has Abstractpub_date
1993-06-01 00:00:00pages
180-92issue
1eissn
0008-8749issn
1090-2163pii
S0008874983711469journal_volume
149pub_type
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journal_title:Cellular immunology
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journal_title:Cellular immunology
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doi:10.1006/cimm.1996.0134
更新日期:1996-05-25 00:00:00
abstract::The purpose of this project was to characterize changes in murine T lymphocyte subpopulations during thymic atrophy induced by protein malnutrition and to determine the role of elevated serum corticosterone in this process. A suitable animal model was generated by placing mice on protein-sufficient (PS) and protein-de...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1105
更新日期:1993-04-15 00:00:00
abstract::Our strategy to use saturation mutagenesis to produce an unbiased collection of major histocompatibility class I mutants has resulted in unpredicted mutant phenotypes. First, we have shown data supporting our earlier work of the Dp20(Y27N) mutant. Allorecognition is altered at the clonal level while no variation in ly...
journal_title:Cellular immunology
pub_type: 杂志文章
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journal_title:Cellular immunology
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更新日期:1987-04-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1994.1036
更新日期:1994-02-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
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pub_type: 杂志文章,随机对照试验
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更新日期:2012-09-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(89)90364-x
更新日期:1989-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.2001.1883
更新日期:2001-11-25 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(90)90164-m
更新日期:1990-10-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1026
更新日期:1993-02-01 00:00:00
abstract::The nonspecific B-cell response induced by infecting mice with two nonlethal malaria parasites, Plasmodium chabaudi adami and Plasmodium yoelii, was analyzed in an isotype-specific reverse plaque assay. Our results showed different isotypic patterns in the two infections, although cells secreting immunoglobulin of all...
journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(85)90187-x
更新日期:1985-01-01 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1016/0008-8749(83)90160-0
更新日期:1983-12-01 00:00:00
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pub_type: 杂志文章
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更新日期:2017-12-01 00:00:00
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更新日期:1988-04-01 00:00:00
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journal_title:Cellular immunology
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journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1998-09-15 00:00:00
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journal_title:Cellular immunology
pub_type: 杂志文章
doi:10.1006/cimm.1993.1058
更新日期:1993-03-01 00:00:00
abstract::Although engagement of MHC class II molecules on human monocytes triggers various cellular events, their possible role in monocyte death is yet unknown. We demonstrate that ligation of MHC class II on primary monocytes induces a rapid cell death that has all the characteristics of monocyte apoptosis, does not require ...
journal_title:Cellular immunology
pub_type: 杂志文章
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更新日期:1999-02-25 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:1989-08-01 00:00:00
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journal_title:Cellular immunology
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更新日期:2010-01-01 00:00:00
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更新日期:1990-06-01 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:1992-11-01 00:00:00
abstract::ErbB-2 is ubiquitinated and degraded when dissociated from its membrane chaperone or bound by specific antibody. Reagents which induce such degradation have demonstrated antitumor activity and may impact ErbB-2 immunogenicity. To further understand ErbB-2 degradation and immunogenicity, a glycine-alanine repeat (GAr) ...
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更新日期:2001-09-15 00:00:00