期刊
JOURNAL OF NEUROIMMUNOLOGY
卷 260, 期 1-2, 页码 9-16出版社
ELSEVIER
DOI: 10.1016/j.jneuroim.2013.04.019
关键词
Macrophages; Bioparticles; Neuroimmunomodulation; Ocular Immune Privilege; Retina
资金
- U.S. National Institutes of Health [EY01752]
- Massachusetts Lions Eye Research Foundation
Within the immunosuppressive ocular microenvironment, there are constitutively present the immunomodulating neuropeptides alpha-melanocyte stimulating hormone (alpha-MSH) and neuropeptide Y (NPY) that promote suppressor functionality in macrophages. In this study, we examined the possibility that alpha-MSH and NPY modulate phagocytic activity in macrophages. The macrophages treated with alpha-MSH and NPY were significantly suppressed in their capacity to phagocytize unopsonized Escherichia coli and Staphylococcus aureus bioparticles, but not antibody-opsonized bioparticles. The neuropeptides significantly suppressed phagolysosome activation, and the FcR-associated generation of reactive oxidative species as well. This suppression corresponds to neuropeptide modulation of macrophage functionality within the ocular microenvironment to suppress the activation of immunogenic inflammation. (C) 2013 Elsevier B.V. All rights reserved.
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