Preservation of optic nerve structure by complement inhibition in experimental glaucoma.

Cell and Tissue Research
Caroline J GasselStephanie C Joachim

Abstract

Glaucoma is characterized by a progressive damage of the retina and the optic nerve. Despite a huge research interest, the exact pathomechanisms are still unknown. In the experimental autoimmune glaucoma model, rats develop glaucoma-like damage of the retina and the optic nerve after immunization with an optic nerve antigen homogenate (ONA). An early activation of the complement system, even before optic nerve degeneration, was reported in this model. Here, we investigated the effects of a monoclonal antibody against complement factor C5 on optic nerves. Rats were immunized with ONA and compared to controls. In one eye of some ONA animals, the antibody against C5 was intravitreally injected (15 μmol: ONA + C5-I or 25 μmol: ONA + C5-II) before immunization and then every 2 weeks. After 6 weeks, optic nerves were processed for histology (n = 6/group). These analyses demonstrated that the intravitreal therapy reduced the depositions of the membrane attack complex compared to ONA animals (ONA + C5-I: p = 0.005; ONA + C5-II: p = 0.002). Cellular infiltration was significantly reduced in the ONA + C5-I group (p = 0.003), but not in ONA + C5-II tissues (p = 0.41). Furthermore, SMI-32 staining revealed that neurofilament was preserved ...Continue Reading

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Citations

Feb 15, 2021·Survey of Ophthalmology·Luciano QuarantaIvano Riva
Jul 3, 2021·Molecular & Cellular Proteomics : MCP·Xiaoyan LiuWei Sun

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Methods Mentioned

BETA
transgenic

Software Mentioned

Statistica
ImageJ
AntRenamer
Corel Paint Shop Pro X8

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