Experimental exposure to methylformate and its neurobehavioral effects.

Détails

ID Serval
serval:BIB_17500
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Experimental exposure to methylformate and its neurobehavioral effects.
Périodique
International Archives of Occupational and Environmental Health
Auteur⸱e⸱s
Sethre T., Läubli T., Berode M., Hangartner M., Krueger H.
ISSN
0340-0131
Statut éditorial
Publié
Date de publication
2000
Peer-reviewed
Oui
Volume
73
Numéro
6
Pages
401-409
Langue
anglais
Résumé
OBJECTIVES: The aim of the study was to investigate the acute effects of experimental methylformate exposure on the nervous system. METHODS: In an exposure chamber, 20 subjects were exposed to methylformate at 100 ppm [Swiss maximum allowable concentration (MAC)] for 8 h. The same number of subjects with the same ages (between 20 and 30 years), gender and education level (university) were examined by the same procedure as a control group. The subjects did not know if they were exposed or not. Three times (morning, noon, evening) during these 8 h, mood [Profile of Mood States (POMS)], neurobehavioral performance (reaction, Stroop, nonverbal learning, determination, tracking; Wiener Test System), vision (visual acuity, contrast sensitivity, color sensitivity) and postural sway were tested. During an undemanding test (POMS) and a demanding performance task (determination test), pulse, electromyography (EMG) of the forehead and of the neck were recorded. In the morning and evening spirometry [forced vital capacity (FVC), forced one-second expiration volume (FEV), medium expiration flow (MEF) and peak expiration flow (PEF)] and the odor perception threshold were measured. RESULTS: In the evening, in the exposed group, fatigue was significantly increased and the EMG of the forehead during a demanding task showed a different development during exposure. The other tests showed no significant solvent effect, but 16 of 43 test parameters showed a significant effect of time. CONCLUSIONS: The results of this study indicate a possible effect of methylformate exposure on the subjective feeling of fatigue after 8 h exposure at 100 ppm in young and healthy subjects, without measurable impairment of neurobehavioral performance. We assume that a similar effect in normal work, combined with a heavy workload and shift work, can lead to an impairment of productivity, and increase the risk of accidents.
Mots-clé
Adult, Affect, Cognition, Electromyography, Fatigue, Female, Formic Acid Esters, Humans, Inhalation Exposure, Male, Muscle, Skeletal, Neuropsychological Tests, Occupational Exposure, Random Allocation, Task Performance and Analysis
Pubmed
Web of science
Création de la notice
19/11/2007 13:11
Dernière modification de la notice
20/08/2019 13:47
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