Iron and other metals in the pathogenesis of Parkinson's disease: Toxic effects and possible detoxification.

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ID: 4330
2019
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Abstract
Of the documented cases of Parkinson's disease (PD), about 10% have a genetic background. The remaining cases of PD have unknown etiology. Thus, environmental factors appear to play a pathogenic role in most of the PD cases. Several of the so far known PD inducing chemicals appear to increase the formation of mitochondrial reactive oxygen species (ROS). A suspected environmental factor is the non-proteinogenic amino acid β-methylamino-l-alanine (BMAA), which may act to carry iron species into the brain and disrupt correct biosynthesis of proteins. In addition, in epidemiological studies, it has been reported a connection between PD and metal exposures, including iron, mercury, manganese, and lead. Research has shown elevated iron levels in the substantia nigra of PD patients. Mitochondrial dysfunction induced by genetic or environmental factors appears to evoke cascades of biochemical events, which include non-physiological leakage of ROS and arrest of the sensitive production of dopamine. A combination of increased ROS and loosely chelated iron causes neurotransmitter dysfunction. Recent research indicates that treatment with exogenous chelators, such as deferiprone, apomorphine, and hinokitiol, can inhibit PD progression. The endogenous chelator, neuromelanin, also appears to exert protection. In the present review, the pathogenic mechanisms and genetic susceptibilities to metals in PD are explored. The paper is also focused on strategies for the therapy of PD, mainly by using chelation therapy to reduce the level of iron.
Reference Key
bjrklund2019ironjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Bjørklund, Geir;Hofer, Tim;Nurchi, Valeria Marina;Aaseth, Jan;
Journal Journal of inorganic biochemistry
Year 2019
DOI
S0162-0134(18)30662-7
URL
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