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Deficiency of the complement regulator CD59a exacerbates Wallerian degeneration

Ramaglia, Valeria, King, Rosalind Helen Mary, Morgan, Bryan Paul and Baas, Frank 2009. Deficiency of the complement regulator CD59a exacerbates Wallerian degeneration. Molecular Immunology 46 (8-9) , pp. 1892-1896. 10.1016/j.molimm.2009.01.017

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The complement system is implicated in Wallerian degeneration (WD). We have previously shown that the membrane attack complex (MAC), the terminal activation product of the complement cascade, mediates rapid axonal degradation and myelin clearance during WD after peripheral nerve injury. In this study we analyzed the contribution of CD59a, a cell membrane negative regulator of the MAC, to WD. Following injury, the level of MAC deposition was higher in the CD59a deficient mice than wildtypes whereas the residual axonal content was lower in CD59a deficient mice than wildtypes, strongly implicating MAC as a determinant of axonal damage during WD. The number of endoneurial macrophages was significantly higher in CD59a deficient mice compared to wildtypes at 1 day post-injury. These findings are relevant to the understanding of the mechanisms of axon loss in injury and disease.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Medicine
Subjects: R Medicine > R Medicine (General)
Uncontrolled Keywords: Wallerian degeneration; Complement; Membrane attack complex (MAC); CD59a
Publisher: Elsevier
ISSN: 0161-5890
Last Modified: 04 Jun 2017 03:43

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