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Aneuploidy is Linked to Neurological Phenotypes Through Oxidative Stress. | LitMetric

Aneuploidy is Linked to Neurological Phenotypes Through Oxidative Stress.

J Mol Neurosci

Flinders Health and Medical Research Institute, College of Medicine and Public Health, Flinders University, Adelaide, 5042, Australia.

Published: May 2024

AI Article Synopsis

Article Abstract

Aneuploidy, having an aberrant genome, is gaining increasing attention in neurodegenerative diseases. It gives rise to proteotoxic stress as well as a stereotypical oxidative shift which makes these cells sensitive to internal and environmental stresses. A growing body of research from numerous laboratories suggests that many neurodegenerative disorders, especially Alzheimer's disease and frontotemporal dementia, are characterised by neuronal aneuploidy and the ensuing apoptosis, which may contribute to neuronal loss. Using Drosophila as a model, we investigated the effect of induced aneuploidy in GABAergic neurons. We found an increased proportion of aneuploidy due to Mad2 depletion in the third-instar larval brain and increased cell death. Depletion of Mad2 in GABAergic neurons also gave a defective climbing and seizure phenotype. Feeding animals an antioxidant rescued the climbing and seizure phenotype. These findings suggest that increased aneuploidy leads to higher oxidative stress in GABAergic neurons which causes cell death, climbing defects, and seizure phenotype. Antioxidant feeding represents a potential therapy to reduce the aneuploidy-driven neurological phenotype.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11062972PMC
http://dx.doi.org/10.1007/s12031-024-02227-1DOI Listing

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