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Manganese in health and disease
Daiana Silva Avila1, Robson Luiz Puntel, Michael Aschner
1Biochemistry Graduation Program, Universidade Federal do Pampa, Uruguaiana, Rio Grande do Sul, Brazil, avilads1@gmail.com.
Abstract:
Manganese is an important metal for human health, being absolutely necessary for development, metabolism, and the antioxidant system. Nevertheless, excessive exposure or intake may lead to a condition known as manganism, a neurodegenerative disorder that causes dopaminergic neuronal death and parkinsonian-like symptoms. Hence, Mn has a paradoxal effect in animals, a Janus-faced metal. Extensive work has been carried out to understand Mn-induced neurotoxicity and to find an effective treatment. This review focuses on the requirement for Mn in human health as well as the diseases associated with excessive exposure to this metal.
Insights
Manganese (Mn) is vital for human health but toxic in excess, causing neurodegenerative manganism with parkinsonian symptoms. This review explores Mn
Area of Science:
- Biochemistry
- Neuroscience
- Toxicology
Background:
- Manganese (Mn) is an essential trace element crucial for human development, metabolism, and antioxidant defenses.
- However, elevated exposure to Mn can induce manganism, a neurodegenerative condition.
- Manganism is characterized by dopaminergic neuronal loss, leading to parkinsonian-like symptoms.
Purpose of the Study:
- To review the essential roles of manganese in human health.
- To elucidate the mechanisms of manganese-induced neurotoxicity.
- To discuss diseases associated with excessive manganese exposure.
Main Methods:
- Literature review of scientific articles on manganese.
- Analysis of studies on manganese metabolism and toxicity.
- Synthesis of information on manganism and its clinical manifestations.
Main Results:
- Manganese is indispensable for various physiological processes.
- Excessive manganese exposure leads to neurodegeneration, mimicking Parkinson's disease.
- The dual role of manganese highlights its Janus-faced nature in biological systems.
Conclusions:
- Understanding manganese's essentiality and toxicity is critical for public health.
- Further research is needed to develop effective treatments for manganese-induced neurotoxicity.
- This review provides a comprehensive overview of manganese's impact on human health.
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