An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition

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2018
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Terron, Andrea
Bal-Price, Anna
Paini, Alicia
Monnet-Tschudi, Florianne
Bennekou, Susanne Hougaard
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Archives of Toxicology ; 92 (2018), 1. - pp. 41-82. - ISSN 0340-5761. - eISSN 1432-0738
Abstract
Epidemiological studies have observed an association between pesticide exposure and the development of Parkinson's disease, but have not established causality. The concept of an adverse outcome pathway (AOP) has been developed as a framework for the organization of available information linking the modulation of a molecular target [molecular initiating event (MIE)], via a sequence of essential biological key events (KEs), with an adverse outcome (AO). Here, we present an AOP covering the toxicological pathways that link the binding of an inhibitor to mitochondrial complex I (i.e., the MIE) with the onset of parkinsonian motor deficits (i.e., the AO). This AOP was developed according to the Organisation for Economic Co-operation and Development guidelines and uploaded to the AOP database. The KEs linking complex I inhibition to parkinsonian motor deficits are mitochondrial dysfunction, impaired proteostasis, neuroinflammation, and the degeneration of dopaminergic neurons of the substantia nigra. These KEs, by convention, were linearly organized. However, there was also evidence of additional feed-forward connections and shortcuts between the KEs, possibly depending on the intensity of the insult and the model system applied. The present AOP demonstrates mechanistic plausibility for epidemiological observations on a relationship between pesticide exposure and an elevated risk for Parkinson's disease development.
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ISO 690TERRON, Andrea, Anna BAL-PRICE, Alicia PAINI, Florianne MONNET-TSCHUDI, Susanne Hougaard BENNEKOU, Marcel LEIST, Stefan SCHILDKNECHT, 2018. An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition. In: Archives of Toxicology. 92(1), pp. 41-82. ISSN 0340-5761. eISSN 1432-0738. Available under: doi: 10.1007/s00204-017-2133-4
BibTex
@article{Terron2018-01adver-40877,
  year={2018},
  doi={10.1007/s00204-017-2133-4},
  title={An adverse outcome pathway for parkinsonian motor deficits associated with mitochondrial complex I inhibition},
  number={1},
  volume={92},
  issn={0340-5761},
  journal={Archives of Toxicology},
  pages={41--82},
  author={Terron, Andrea and Bal-Price, Anna and Paini, Alicia and Monnet-Tschudi, Florianne and Bennekou, Susanne Hougaard and Leist, Marcel and Schildknecht, Stefan}
}
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