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Complement-mediated muscle cell lysis: A possible mechanism of myonecrosis in anti-SRP associated necrotizing myopathy (ASANM)
Journal article   Peer reviewed

Complement-mediated muscle cell lysis: A possible mechanism of myonecrosis in anti-SRP associated necrotizing myopathy (ASANM)

A. Rojana-udomsart, C. Mitrpant, C. Bundell, L. Price, Y-B Luo, V. Fabian, S.D. Wilton, P. Hollingsworth and F.L. Mastaglia
Journal of Neuroimmunology, Vol.264(1-2), pp.65-70
2013
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Abstract

The mechanism of necrotizing myopathy associated with antibodies to signal recognition particle (SRP) remains unclear. We investigated the effect of anti-SRP + serum and complement on cell viability in myoblast cultures. Cell viability was only slightly reduced by incubation with anti-SRP + serum compared with control serum. However, the addition of fresh complement resulted in a marked reduction in cell survival. Surface immunostaining for SRP, C3c and C5b-9 was demonstrated in cultures pre-incubated with anti-SRP + serum and complement, and in muscle biopsies from patients with myopathy. These findings provide further support for a complement-dependent antibody-mediated mechanism in anti-SRP associated myopathy.

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Collaboration types
Domestic collaboration
International collaboration
Citation topics
1 Clinical & Life Sciences
1.106 Rheumatology
1.106.1684 Dermatomyositis
Web Of Science research areas
Immunology
Neurosciences
ESI research areas
Neuroscience & Behavior
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