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Despite a massive degeneration of retinal ganglion cells (RGC) after optic nerve crush (ONC) in hooded rats only a minor increase in retinal glial fibrillary acidic protein (GFAP) immunoreactivity was found in the inner retina. Interestingly, a combination of ONC with the administration of the proinflammatory agent lipopolysaccharide (LPS) but not LPS alone induces increased GFAP immunoreactivity. In contrast albino rats showed elevated GFAP immunoreactivity in response to both, LPS administration and ONC with no further increase after a combination of both. These data demonstrate significant differences in retinal glia responsiveness between hooded and albino rats after optic nerve lesions.
Dr R. Engelmann, Forschergruppe 'Visuelle Entwicklung und Plastizität', Leibniz Institute for Neurobiology, Magdeburg, Germany
1.3 Pathogenesis (Part of: 1 General aspects)
2.15 Optic nerve (Part of: 2 Anatomical structures in glaucoma)
5 Experimental glaucoma; animal models