Airborne manganese exposure and neurobehavior in school-aged children living near a ferro-manganese alloy plant

Environmental Research
Juliana L G RodriguesJosé Antonio Menezes-Filho

Abstract

Excessive exposure to Mn can lead to its accumulation in the brain with neurotoxic consequences. In children, elevated Mn has been associated with deficits in certain neuropsychological domains such as cognition, motor function, memory and attention, and in some instances, hyperactivity and behavioral problems. The aim of this study was to evaluate behavioral effects in school-aged children living near a ferro-manganese alloy plant and examine their association with Mn exposure. Occipital hair, toenails and blood samples were collected from 225 children (7-12 years old) enrolled in four elementary schools with different levels of exposure to Mn, based on dust Mn deposition rates. Full data set collection was completed and run from 165 children. Mn in hair (MnH), toenails (MnTn), blood (MnB) and blood lead levels (PbB) were determined by graphite furnace atomic absorption spectrometry. Children's behavior was assessed with the Child Behavior Check List (CBCL) reported by parents. Median levels and range of MnH, MnT and MnB were, respectively, 0.73 µg/g (0.16-8.79), 0.84 µg/g (0.15-9.29) and 8.98 μg/L (1.51-40.43). Median and range of PbB were 1.2 µg/dL (0.2-15.6). MnH and MnB were not associated with any scale of the CBCL behavi...Continue Reading

Citations

Jun 21, 2019·International Journal of Environmental Research and Public Health·Chao-Yan OuShao-Jun Li
Mar 18, 2020·Archives of Toxicology·Geir BjørklundJan Aaseth
Mar 20, 2020·International Journal of Environmental Research and Public Health·Agostino Di CiaulaRuggero Ridolfi
Mar 30, 2021·Current Epidemiology Reports·Julia A BauerBirgit Claus Henn
May 4, 2021·Journal of Exposure Science & Environmental Epidemiology·Yoshira Ornelas Van HorneJill E Johnston
Aug 25, 2021·Neurotoxicology and Teratology·Lonnie SearsKristina M Zierold
Aug 22, 2021·Environmental Research·Viviana RamírezAna Rivas
Nov 14, 2021·International Archives of Occupational and Environmental Health·Victor O MartinezJosé A Menezes-Filho

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