NeuroMolecular Medicine

, Volume 11, Issue 4, pp 311–321 | Cite as

From Manganism to Manganese-Induced Parkinsonism: A Conceptual Model Based on the Evolution of Exposure

  • Roberto G. Lucchini
  • Christopher J. Martin
  • Brent C. Doney
Review Paper


Manganism is a distinct medical condition from Parkinson’s disease. Manganese exposure scenarios in the last century generally have changed from the acute, high-level exposure conditions responsible for the occurrence of manganism to chronic exposure to much lower levels. Such chronic exposures may progressively extend the site of manganese deposition and toxicity from the globus pallidus to the entire area of the basal ganglia, including the substantia nigra pars compacta involved in Parkinson’s disease. The mechanisms of manganese neurotoxicity from chronic exposure to very low levels are not well understood, but promising information is based on the concept of susceptibility that may place individuals exposed to manganese at a higher risk for developing Parkinsonian disturbances. These conditions include mutations of genes which play important pathogenetic roles in both Parkinsonism and in the regulation of manganese transport and metabolism. Liver function is also important in manganese-related neurotoxicity and sub-clinical impairment may increase the risk of Parkinsonism. The purpose and scope of this report are to explore the literature concerning manganese exposure and potential subclinical effects and biological pathways, impairment, and development of diseases such as Parkinsonism and manganism. Inhalation and ingestion of manganese will be the focus of this report.


Manganism Manganese poisoning Parkinsonian disorders Occupational exposure Neurotoxicity 



The findings and conclusions of this report are those of the authors and do not necessarily represent the views of the National Institute for Occupational Safety and Health.


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Copyright information

© US Government 2009

Authors and Affiliations

  • Roberto G. Lucchini
    • 1
  • Christopher J. Martin
    • 2
  • Brent C. Doney
    • 3
  1. 1.Department of Experimental and Applied MedicineSection of Occupational Health and Industrial Hygiene, University of BresciaBresciaItaly
  2. 2.Institute of Occupational and Environmental Health, West Virginia University School of MedicineMorgantownUSA
  3. 3.Centers for Disease Control and Prevention, National Institute for Occupational Safety and HealthMorgantownUSA

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