Abstract
Valcamonica is an Italian valley where ferro-manganese industries have been active for a century and where an increased prevalence of parkinsonism was observed. A group of 93 patients (65 from Valcamonica, 28 from the reference area of Brescia city) and 76 controls (52 from Valcamonica, 24 from Brescia) were screened for serum Cu, Zn, Fe, Mn in blood (MnB) and urine (MnU), transferrin, peroxides, alanine (ALT) and aspartate (AST) transaminases and direct bilirubin. Test results were compared among groups according to the residential area and related to the disease severity. Valcamonica patients had a serum-increase of Cu, as well as of AST/ALT ratio, and a serum-decrease of Zn and Fe compared with other subgroups of cases and controls. Cases and controls from Valcamonica had higher MnB and MnU levels compared to cases and controls from Brescia. After controlling for the duration of illness, the Unified Parkinson’s Disease Rating Scale III domain correlated with serum Cu and AST/ALT ratio. Our results suggest the possibility that, in this area, a lifetime exposure to neurotoxicants and to Mn in particular, when accompanied to a subclinical liver dysfunction, may pose an increased risk for neurodegenerative disorders via metal metabolism (Cu, Zn, Fe) abnormalities.
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Acknowledgments
This study was supported by the National Institute for Occupational Safety and Prevention of Italy (ISPESL), with the grant PFA/DML/UO4/2002 “Markers biochimici del Morbo di Parkinson di possible origine occupazionale” and by a grant from the AFaR Foundation-Hosp. Fatebenefratelli Rome, Italy. It was also partially supported by the EU through its Sixth Framework Programme for RTD (contract no FOOD-CT-2006-016253), which reflects only the author’s views. The European Community is not liable for any use that may be made of the information contained therein.
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Squitti, R., Gorgone, G., Panetta, V. et al. Implications of metal exposure and liver function in Parkinsonian patients resident in the vicinities of ferroalloy plants. J Neural Transm 116, 1281–1287 (2009). https://doi.org/10.1007/s00702-009-0283-0
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DOI: https://doi.org/10.1007/s00702-009-0283-0