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Evoked potentials in workers occupationally exposed to organic solvents
F Lille1, S Margules, A Mallet
1Laboratoire de Physiologie, Faculté de Médecine Pitié-Salpêtrière, Paris, France.
Electromyography and Clinical Neurophysiology
|July 1, 1993
Summary
Long-term organic solvent exposure impacts the nervous system, particularly peripheral functions. This study reveals amplified age-related effects and heightened sensitivity in women, with central nervous system effects also noted.
Area of Science:
- Neuroscience
- Occupational Health
- Toxicology
Background:
- Occupational exposure to organic solvents is widespread.
- Long-term solvent exposure can lead to neurological deficits.
- Understanding the specific nervous system levels affected is crucial.
Purpose of the Study:
- To investigate the effects of occupational organic solvent exposure on the nervous system.
- To analyze the influence of age and gender on solvent-induced neurological changes.
- To differentiate between peripheral and central nervous system impairments.
Main Methods:
- Recording Somatosensory Evoked Potentials (SEPs), Brainstem Auditory Evoked Potentials (BAEPs), and Pattern Reversal Evoked Potentials (PREPs).
- Comparing neurophysiological data between solvent-exposed workers and a control group.
- Analyzing data with respect to age and gender.
Main Results:
- Significant differences observed in SEPs, indicating peripheral impairments.
- Peripheral effects amplify age-related differences seen in controls.
- Women exhibit higher sensitivity to solvent exposure.
- Central nervous system impairment identified by P22 latency delay, amplified by solvent exposure and age.
Conclusions:
- Organic solvent exposure causes both peripheral and central nervous system impairments.
- Age and gender significantly modulate the neurotoxic effects of solvents.
- SEPs are sensitive indicators of peripheral nerve damage from solvent exposure.