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Organisms: Mus musculus, Rattus norvegicus, Homo sapiens, Macaca mulatta, Sus scrofa, Danio rerio
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Abstract (Expand)
Cortical pathology contributes to chronic cognitive impairment of patients suffering from the neuroinflammatory disease multiple sclerosis (MS). How such gray matter inflammation affects neuronal … structure and function is not well understood. In the present study, we use functional and structural in vivo imaging in a mouse model of cortical MS to demonstrate that bouts of cortical inflammation disrupt cortical circuit activity coincident with a widespread, but transient, loss of dendritic spines. Spines destined for removal show local calcium accumulations and are subsequently removed by invading macrophages or activated microglia. Targeting phagocyte activation with a new antagonist of the colony-stimulating factor 1 receptor prevents cortical synapse loss. Overall, our study identifies synapse loss as a key pathological feature of inflammatory gray matter lesions that is amenable to immunomodulatory therapy.
Authors: Mehrnoosh Jafari, Adrian-Minh Schumacher, Nicolas Snaidero, Emily M Ullrich Gavilanes, Tradite Neziraj, Virág Kocsis-Jutka, Daniel Engels, Tanja Jürgens, Ingrid Wagner, Juan Daniel Flórez Weidinger, Stephanie S Schmidt, Eduardo Beltrán, Nellwyn Hagan, Lisa Woodworth, Dimitry Ofengeim, Joseph Gans, Fred Wolf, Mario Kreutzfeldt, Ruben Portugues, Doron Merkler, Thomas Misgeld, Martin Kerschensteiner
Date Published: 25th Jan 2021
Publication Type: Journal
Created: 11th Oct 2024 at 08:48