title: Spermidine protects against α-synuclein neurotoxicity.
abstract: As our society ages, neurodegenerative disorders like Parkinson`s disease (PD) are increasing in pandemic proportions. While mechanistic understanding of PD is advancing, a treatment with well tolerable drugs is still elusive. Here, we show that administration of the naturally occurring polyamine spermidine, which declines continuously during aging in various species, alleviates a series of PD-related degenerative processes in the fruit fly Drosophila melanogaster and the nematode Caenorhabditis elegans, two established model systems for PD pathology. In the fruit fly, simple feeding with spermidine inhibited loss of climbing activity and early organismal death upon heterologous expression of human α-synuclein, which is thought to be the principal toxic trigger of PD. In this line, administration of spermidine rescued α-synuclein-induced loss of dopaminergic neurons, a hallmark of PD, in nematodes. Alleviation of PD-related neurodegeneration by spermidine was accompanied by induction of autophagy, suggesting that this cytoprotective process may be responsible for the beneficial effects of spermidine administration.
authors.affiliation: a Institute of Molecular Biosciences ; University of Graz ; Graz , Austria.
authors.forename: Sabrina
authors.initials: S
authors.lastname: Büttner
authors.forename: Filomena
authors.initials: F
authors.lastname: Broeskamp
authors.forename: Cornelia
authors.initials: C
authors.lastname: Sommer
authors.forename: Maria
authors.initials: M
authors.lastname: Markaki
authors.forename: Lukas
authors.initials: L
authors.lastname: Habernig
authors.forename: Ali
authors.initials: A
authors.lastname: Alavian-Ghavanini
authors.forename: Didac
authors.initials: D
authors.lastname: Carmona-Gutierrez
authors.forename: Tobias
authors.initials: T
authors.lastname: Eisenberg
authors.forename: Eva
authors.initials: E
authors.lastname: Michael
authors.forename: Guido
authors.initials: G
authors.lastname: Kroemer
authors.forename: Nektarios
authors.initials: N
authors.lastname: Tavernarakis
authors.forename: Stephan J
authors.initials: SJ
authors.lastname: Sigrist
authors.forename: Frank
authors.initials: F
authors.lastname: Madeo
mesh_terms: D000818:Animals; D001343:Autophagy / Q000187:drug effects; D017173:Caenorhabditis elegans / Q000378:metabolism; D004195:Disease Models, Animal; D059290:Dopaminergic Neurons / Q000187:drug effects* / Q000378:metabolism; D004331:Drosophila melanogaster / Q000378:metabolism; D006801:Humans; D008345:Manganese / Q000633:toxicity; D009043:Motor Activity / Q000187:drug effects; D010300:Parkinson Disease / Q000378:metabolism / Q000473:pathology; D020011:Protective Agents / Q000494:pharmacology*; D013095:Spermidine / Q000494:pharmacology*; D051844:alpha-Synuclein / Q000235:genetics / Q000378:metabolism*
chemical_list: D020011:Protective Agents; D051844:alpha-Synuclein; D008345:Manganese; D013095:Spermidine
keywords: Parkinson's disease; Spermidine; aging; autophagy; dopaminergic neuron loss; motor dysfunction; neurodegeneration; α-synuclein