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- W3200096978 abstract "The exon-52-deleted mdx52 mouse is a critical model of Duchenne muscular dystrophy (DMD), as it features a deletion in a hotspot region of the DMD gene, frequently mutated in patients. Deletion of exon 52 impedes expression of several brain dystrophins (Dp427, Dp260 and Dp140), thus providing a key model for studying the cognitive impairment associated with DMD and testing rescuing strategies. Here, using in vivo magnetic resonance imaging and neurohistology, we found no gross brain abnormalities in mdx52 mice, suggesting that the neural dysfunctions in this model are likely at the level of brain cellular functionalities. Then, we investigated emotional behavior and fear learning performance of mdx52 mice compared to mdx mice that only lack Dp427 to focus on behavioral phenotypes that could be used in future comparative preclinical studies. mdx52 mice displayed enhanced anxiety and a severe impairment in learning an amygdala-dependent Pavlovian association. These replicable behavioral outcome measures are reminiscent of the internalizing problems reported in a quarter of DMD patients, and will be useful for preclinical estimation of the efficacy of treatments targeting brain dysfunctions in DMD." @default.
- W3200096978 created "2021-09-27" @default.
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- W3200096978 date "2021-09-01" @default.
- W3200096978 modified "2023-10-18" @default.
- W3200096978 title "Emotional behavior and brain anatomy of the <i>mdx52</i> mouse model of Duchenne muscular dystrophy" @default.
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- W3200096978 doi "https://doi.org/10.1242/dmm.049028" @default.
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- W3200096978 hasPublicationYear "2021" @default.
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