期刊
JOURNAL OF NEUROIMMUNOLOGY
卷 160, 期 1-2, 页码 110-121出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jneuroim.2004.11.004
关键词
CNS; inflammation; apoptosis; iNOS; Th1; EAE
资金
- NINDS NIH HHS [R01 NS043355-01A1, R01 NS043355-02, R01 NS43355, R01 NS043355-05, R01 NS043355-04, R01 NS043355-03] Funding Source: Medline
Experimental autoimmune encephalomyelitis (EAE) disease was accelerated iNOS-deficient (KO) mice: coinciding with greatly increased numbers of Ag-specific Th1 cells in the periphery that appeared to rapidly shift from the spleen to the CNS during onset of disease symptoms. iNOS KO mice had significantly increased Th1 cells in the CNS versus wild-type mice. Apoptosis of CNS-infiltrating CD4(+) T cells was impaired in iNOS KO mice at peak of disease; consequently, these mice had more CNS-infiltrating CD4(+) T cells. Subsequently, iNOS KO mice up-regulated apoptosis of CNS-CD4(+) T cells. During chronic EAE, CNS macrophages were greatly decreased, suggesting elimination of CNS-infiltrating CD4(+) T cells and activated macrophages by iNOS-independent mechanisms. INOS is not only required for apoptosis of CNS-CD4(+) T cells but also prevents overexpansion of autoreactive Th1 cells in the periphery and the CNS. (c) 2004 Elsevier B.V. All rights reserved.
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