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Neurobehavioral functions among workers exposed to manganese ore
1Department of Community, Occupational & Family Medicine, National University of Singapore.
Scandinavian Journal of Work, Environment & Health
|August 1, 1993
Summary
Manganese-exposed workers showed poorer motor speed and coordination. Neurobehavioral tests detected these early changes, unlike clinical exams, highlighting risks of manganese exposure.
Area of Science:
- Occupational Health
- Neuroscience
- Toxicology
Background:
- Manganese ore milling plant workers face potential neurotoxic exposure.
- Assessing early neurobehavioral effects of manganese is crucial for occupational health.
- Clinical examinations may not detect subtle neurological changes.
Purpose of the Study:
- To evaluate neurobehavioral function in manganese-exposed workers.
- To compare neurobehavioral test results with clinical findings.
- To determine the sensitivity of neurobehavioral tests in detecting early manganese-induced neurological changes.
Main Methods:
- Administered the World Health Organization Neurobehavioral Core Test Battery.
- Recruited 17 manganese ore milling plant workers (baggers) and 17 referents.
- Measured blood manganese concentrations and assessed nervous system symptoms.
Main Results:
- Exposed workers reported more nervous system symptoms.
- No significant differences in nerve conduction between groups.
- Exposed workers exhibited poorer motor speed, visual scanning, and visuomotor coordination.
Conclusions:
- Neurobehavioral tests are more sensitive than clinical examinations for detecting early motor function changes in manganese-exposed workers.
- Manganese exposure in milling plants is associated with subtle neurobehavioral deficits.
- Early detection through neurobehavioral assessment is vital for preventing long-term neurological damage.