| First Author | Kihara Y | Year | 2005 |
| Journal | J Exp Med | Volume | 202 |
| Issue | 6 | Pages | 853-63 |
| PubMed ID | 16172262 | Mgi Jnum | J:107468 |
| Mgi Id | MGI:3621258 | Doi | 10.1084/jem.20050660 |
| Citation | Kihara Y, et al. (2005) Dual phase regulation of experimental allergic encephalomyelitis by platelet-activating factor. J Exp Med 202(6):853-63 |
| abstractText | Experimental allergic encephalomyelitis (EAE) serves as a model for multiple sclerosis and is considered to be a CD4+ Th1 cell-mediated autoimmune disease. To investigate the role of platelet-activating factor (PAF) in this disease, PAF receptor (PAFR) KO (PAFR-KO) and wild-type (WT) mice, on a C57BL/6 genetic background, were immunized with myelin oligodendrocyte glycoprotein 35-55. The levels of PAF production and PAFR mRNA expression in the spinal cord (SC) correlated with the EAE symptoms. PAFR-KO mice showed lower incidence and less severe symptoms in the chronic phase of EAE than WT mice. However, no difference was observed in T cell proliferation, Th1-cytokine production, or titer of IgG2a between both genotypes. Before onset, as revealed by microarray analysis, mRNAs of inflammatory mediators and their receptors-including IL-6 and CC chemokine receptor 2-were down-regulated in the SC of PAFR-KO mice compared with WT mice. Moreover, in the chronic phase, the severity of inflammation and demyelination in the SC was substantially reduced in PAFR-KO mice. PAFR-KO macrophages reduced phagocytic activity and subsequent production of TNF-alpha. These results suggest that PAF plays a dual role in EAE pathology in the induction and chronic phases through the T cell-independent pathways. |
