1. Association of exposure to manganese and fine motor skills in welders - Results from the WELDOX II study
- Author
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Chien-Lin Yeh, Tobias Schmidt-Wilcke, Swaantje Casjens, Maria Angela Samis Zella, Anne Lotz, Thomas Behrens, Christoph van Thriel, Dirk Woitalla, Beate Pesch, Martin Lehnert, Thomas Brüning, Wolfgang Zschiesche, Tobias Weiss, Dirk Taeger, Ulrike Dydak, Stefan Gabriel, and Clara Quetscher
- Subjects
medicine.medical_specialty ,chemistry.chemical_element ,Neuroimaging ,Manganese ,Audiology ,Toxicology ,Article ,Part iii ,03 medical and health sciences ,0302 clinical medicine ,Occupational Exposure ,medicine ,Humans ,030304 developmental biology ,Fine motor ,0303 health sciences ,Motor test ,medicine.diagnostic_test ,Fine motor functions ,Metal Workers ,business.industry ,Manganese Poisoning ,General Neuroscience ,Brain ,Magnetic resonance imaging ,Middle Aged ,Magnetic Resonance Imaging ,Globus pallidus ,chemistry ,Motor Skills ,Case-Control Studies ,business ,030217 neurology & neurosurgery - Abstract
The aim of this study was to evaluate the effect of exposure to manganese (Mn) on fine motor functions. A total of 48 welders and 30 unexposed workers as controls completed questionnaires, underwent blood examinations, and a motor test battery. The shift exposure of welders to respirable Mn was measured with personal samplers. For all subjects accumulations of Mn in the brain were assessed with T1-weighted magnetic resonance imaging. Welders showed normal motor functions on the Movement Disorder Society-Sponsored Revision of the Unified Parkinson Disease Rating Scale part III. Furthermore welders performed excellent on a steadiness test, showing better results than controls. However, welders were slightly slower than controls in motor tests. There was no association between fine motor test results and the relaxation rates R1 in globus pallidus and substantia nigra as MRI-based biomarkers to quantify Mn deposition in the brain.
- Published
- 2021