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Gonsalvez DG, De Silva M, Wood RJ, Giuffrida L, Kilpatrick TJ, Murray SS, Xiao J. A Functional and Neuropathological Testing Paradigm Reveals New Disability-Based Parameters and Histological Features for P0180-190-Induced Experimental Autoimmune Neuritis in C57BL/6 Mice. J Neuropathol Exp Neurol 2017; 76:89-100. [PMID: 28082327 DOI: 10.1093/jnen/nlw110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We assessed novel disability-based parameters and neuropathological features of the P0180-190 peptide-induced model of experimental autoimmune neuritis (EAN) in C57BL/6 mice. We show that functional assessments such as running capacity provide a more sensitive method for detecting alterations in disease severity than a classical clinical scoring paradigm. We performed detailed ultrastructural analysis and show for the first time that tomaculous neuropathy is a neuropathological feature of this disease model. In addition, we demonstrate that ultrastructural assessments of myelin pathology are sufficiently sensitive to detect significant differences in both mean G-ratio and mean axon diameter between mice with EAN induced with different doses of pertussis toxin. In summary, we have established a comprehensive assessment paradigm for discriminating variations in disease severity and the extent of myelin pathology in this model. Our findings indicate that this model is a powerful tool to study the pathogenesis of human peripheral demyelinating neuropathies and that this assessment paradigm could be used to determine the efficacy of potential therapies that aim to promote myelin repair and protect against nerve damage in autoimmune neuritides.
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Affiliation(s)
- David G Gonsalvez
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Mithraka De Silva
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Rhiannon J Wood
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Lauren Giuffrida
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia
| | - Trevor J Kilpatrick
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia.,The Florey Institute of Neuroscience and Mental Health Research, Parkville, Victoria, Australia
| | - Simon S Murray
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia.,The Florey Institute of Neuroscience and Mental Health Research, Parkville, Victoria, Australia
| | - Junhua Xiao
- Department of Anatomy and Neuroscience, School of Biomedical Sciences, The University of Melbourne, Parkville, Victoria, Australia.,The Florey Institute of Neuroscience and Mental Health Research, Parkville, Victoria, Australia
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