Browsing by Author "Johansson, L"

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    Exponering för aluminium i smältverk Effekter på nervsystemet
    (Arbetslivsinstitutet, 1997) Iregren, A; Sjögren, B; Andersson, M; W Frech; Hagman, M; Johansson, L; A Wennberg
    The purpose of this investigation was to study nervous system function in workers exposed to aluminium at a foundry and a primary smelter. The aim was to find a level of aluminium in urine and/or blood where no early signs of effects on the nervous system could be observed. A total of 119 men with a minimum of five years of occupational aluminium exposure were studied at two companies. Exposure to aluminium was determined using questionnaires as well as blood and urine samples. The functional status of the central nervous system was assessed using psychological performance tests, neurophysiological tests, and symptom questionnaires. Six performance tests from the SPES battery, measuring attention, motor functions, memory, and intellectual functions, were used. As a complement, three other tests of motor functions were included; a peg-board test, parts of the Luria-Nebraska Motor Scale, and a computerized test of handtremor. The neurophysiological tests were EEG, P300, diadochokinesometri. No effects from the aluminium exposure could be observed on any of the measures. The level of aluminium in blood and urine was, however, very low. Only 10 of the 119 workers had levels in urine exceeding 10 µg/l. Our findings are in accordance with those from previous studies on the neurotoxic effects from low level occupational exposure to aluminium.