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- W3089060721 abstract "Glaucoma is identified by an irreversible retinal ganglion cell (RGC) loss and optic nerve damage. Over the past few years, the immune system gained importance in its genesis. In a glaucoma-like animal model with intraocular S100B injection, RGC death occurs at 14 days. In an experimental autoimmune glaucoma model with systemic S100B immunization, a loss of RGCs is accompanied by a decreased synaptic signal at 28 days. Here, we aimed to study synaptic alterations in these two models. In one group, rats received a systemic S100B immunization (n = 7/group), while in the other group, S100B was injected intraocularly (n = 6–7/group). Both groups were compared to appropriate controls and investigated after 14 days. While inhibitory post-synapses remained unchanged in both models, excitatory post-synapses degenerated in animals with intraocular S100B injection (p = 0.03). Excitatory pre-synapses tendentially increased in animals with systemic S100B immunization (p = 0.08) and significantly decreased in intraocular ones (p = 0.04). Significantly more N-methyl-d-aspartate (NMDA) receptors (both p ≤ 0.04) as well as gamma-aminobutyric acid (GABA) receptors (both p < 0.03) were observed in S100B animals in both models. We assume that an upregulation of these receptors causes the interacting synapse types to degenerate. Heightened levels of excitatory pre-synapses could be explained by remodeling followed by degeneration." @default.
- W3089060721 created "2020-10-01" @default.
- W3089060721 creator A5005926083 @default.
- W3089060721 creator A5033823201 @default.
- W3089060721 creator A5034398378 @default.
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- W3089060721 creator A5085205228 @default.
- W3089060721 creator A5086773075 @default.
- W3089060721 creator A5090060904 @default.
- W3089060721 date "2020-09-23" @default.
- W3089060721 modified "2023-09-25" @default.
- W3089060721 title "Synapse and Receptor Alterations in Two Different S100B-Induced Glaucoma-Like Models" @default.
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