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  • Cataldi, Rodrigo, et al. (author)
  • A dopamine metabolite stabilizes neurotoxic amyloid-β oligomers
  • 2021
  • In: Communications Biology. - : Springer Science and Business Media LLC. - 2399-3642. ; 4:1
  • Journal article (peer-reviewed)abstract
    • Aberrant soluble oligomers formed by the amyloid-β peptide (Aβ) are major pathogenic agents in the onset and progression of Alzheimer’s disease. A variety of biomolecules can influence the formation of these oligomers in the brain, although their mechanisms of action are still largely unknown. Here, we studied the effects on Aβ aggregation of DOPAL, a reactive catecholaldehyde intermediate of dopamine metabolism. We found that DOPAL is able to stabilize Aβ oligomeric species, including dimers and trimers, that exert toxic effects on human neuroblastoma cells, in particular increasing cytosolic calcium levels and promoting the generation of reactive oxygen species. These results reveal an interplay between Aβ aggregation and key biochemical processes regulating cellular homeostasis in the brain.
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