Urine metals concentrations and dyslexia among children in China

Qin, Xue; Zhou, Yu; Gu, Huaiting; Xie, Xinyan; Hou, Fang; Liu, Qi; Wu, Hao; Zhu, Kaiheng; Wan, Zhongmin; Song, Ranran

doi:10.1016/j.envint.2020.105707

Cited by 26 publications

(7 citation statements)

References 56 publications

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“…Several studies have conducted investigations into the influencing factors facing dyslexic children in China. Consistent with our findings, Xue et al, found that there were statistical differences in monthly family income and maternal education level between the dyslexic and non-dyslexic children, which matched on gender, age and grade [ 32 ]. Similarly, maternal education level has been reported to be associated with dyslexia in a cross-sectional epidemiological study [ 33 ].…”

Section: Discussionsupporting

confidence: 91%

Self-Concept in Primary School Student with Dyslexia: The Relationship to Parental Rearing Styles

Huang

Sun

Zhang

et al. 2021

IJERPH

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Dyslexic children may be more likely to form a negative self-concept, especially with poor educational experiences and negative parenting. The purpose of the present study was to investigate the self-concept of Chinese dyslexic children in primary school, and explore the influence factors of self-concept as well as its relationship with parenting style. A total of 50 children with dyslexia and 50 non-dyslexics matched for age, grade and gender participated in the study. We used the Piers-Harris children’s self-concept scale (PHCSS) and the Chinese version of Egna Minnen Beträffande Uppfostran for Children (EMBU-C) to evaluate the self-concept and parenting styles of the study population. Our results indicated that the academic competence, popularity and general self-concept in the dyslexic group were significantly lower than those in the control group (p < 0.05). Based on the multivariate linear regression, we also found that residence (β = −0.32, p < 0.05) and physical activity (β = 0.36, p < 0.01) may influence factors self-concept in dyslexic children. In addition, a moderate and positive correlation was found between the self-concept of physical appearance and maternal emotional warmth (r = 0.36, p < 0.05) by using the Spearman correlation analysis. Our outcomes suggested that children with dyslexia have a poorer self-concept than typical developing children. The self-concept of dyslexic children should be improved in order to achieve better physical and mental development.

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Section: Discussionsupporting

confidence: 91%

Self-Concept in Primary School Student with Dyslexia: The Relationship to Parental Rearing Styles

Huang

Sun

Zhang

et al. 2021

IJERPH

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“…The geometric mean (GM) concentrations of urinary Cd (0.49 μg/L), Pb (1.75 μg/L), and Sb (0.09 μg/L) in Guiyu ER children recruited in 2021 were 76.9, 64.9, and 55.0% lower than the populations from a previously unregulated ER in South China, respectively . Although increased regulations on e-waste recycling have dramatically reduced human exposure to MeTs, the MeT levels in Guiyu ER children of 2021 were still higher than those in the reference area. , …”

Section: Resultsmentioning

confidence: 96%

“…31 Although increased regulations on e-waste recycling have dramatically reduced human exposure to MeTs, the MeT levels in Guiyu ER children of 2021 were still higher than those in the reference area. 32,33 Unexpectedly, the variation trends of mVOCs in ER children were at odds with MeTs (Figure 2). The levels of 6 mVOCs (i.e., MU, HA, 2-MHA, 3-&4-MHA, and ATCA) showed a decreasing trend, whereas the levels of 12 mVOC (i.e., DHBMA, AAMA, AMCC, BPMA, 2-HPMA, TGA, PGA, BMA, 3-HPMA, HPMMA, CPMA, and MA) exhibited an opposite trend.…”

Section: Temporal Variations Inmentioning

confidence: 95%

Construction of Models To Predict the Effectiveness of E-Waste Control through Capture of Volatile Organic Compounds and Metals/Metalloids Exposure Fingerprints: A Six-Year Longitudinal Study

et al. 2023

Environ. Sci. Technol.

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The significant health implications of e-waste toxicants have triggered the global tightening of regulation on informal e-waste recycling sites (ER) but with disparate governance that requires effective monitoring. Taking advantage of the opportunity to implement e-waste control in the Guiyu ER since 2015, we investigated the temporal variations in levels of oxidative DNA damage, 25 volatile organic compound metabolites (VOCs), and 16 metals/metalloids (MeTs) in urine in 918 children between 2016 and 2021 to demonstrate the effectiveness of e-waste control in reducing population exposure risks. The hazard quotients of most MeTs and levels of 8-hydroxy-2′-deoxyguanosine in children decreased significantly during this time, indicating that e-waste control effectively reduces the noncarcinogenic risks of MeT exposure and levels of oxidative DNA damage. Using mVOC-derived indexes as a feature, a bagging-support vector machine algorithm-based machine learning model was constructed to predict the extent of e-waste pollution (EWP). The model exhibited excellent performance with accuracies >97.0% in differentiating between slight and severe EWP. Five simple functions established using mVOC-derived indexes also had high accuracy in predicting the presence of EWP. These models and functions provide a novel human exposure monitoring-based approach for assessing e-waste governance or the presence of EWP in other ERs.

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“…Urinary concentrations of Cr, Ni, As, Se, Sr, Cd, Sb, Tl, Pb, Al, Fe, Cu, Zn and Rb were determined simultaneously using inductively coupled plasma mass spectrometry (ICP-MS; Agilent 7900, Santa Clara, CA, USA) [ 46 ], and analyzed in helium mode. Detailed operation conditions of ICP-MS (with collision cell) were as follows: radio frequency (RF) power, 1550 W; plasma gas flow, 15.00 L/min; auxiliary gas flow, 0.9 L/min; nebulizer flow, 1.03 L/min; atomization chamber temperature, 2 °C; sampling depth, 8 mm.…”

Section: Methodsmentioning

confidence: 99%

“…Correlation (Spearman) matrix for levels of 14 tested metals in Jingyuan County subjects; Table S6. Different age groups urinary median concentrations (µg/L) of metals including Ni, As, Se, Tl, Sr, Pb, Cu and Zn [ 3 , 21 , 39 , 45 , 46 , 49 , 53 , 54 , 83 , 84 , 85 , 86 ].…”

mentioning

confidence: 99%

Urinary Levels of 14 Metal Elements in General Population: A Region-Based Exploratory Study in China

Zhang,

Guo,

Hua

et al. 2023

Toxics

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Metal pollution may lead to a variety of diseases; for this reason, it has become a matter of public concern worldwide. However, it is necessary to use biomonitoring approaches to assess the risks posed to human health by metals. In this study, the concentrations of 14 metal elements in 181 urine samples obtained from the general population of Gansu Province, China, were analyzed using inductively coupled plasma mass spectrometry. Eleven out of fourteen target elements had detection frequencies above 85%, namely, Cr, Ni, As, Se, Cd, Al, Fe, Cu and Rb. The concentrations of most metal elements in the urine of our subjects corresponded to the medium levels of subjects in other regional studies. Gender exerted a significant influence (p < 0.05) on the concentrations of Tl, Rb and Zn. The concentrations of Ni, As, Pb, Sr, Tl, Zn, Cu and Se showed significant differences among different age groups and the age-related concentration trends varied among these elements. There were significant differences in the urine concentrations of Zn and Sr between those subjects in the group who were frequently exposed to soil (exposed soil >20 min/day) and those in the group who were not, indicating that people in regular contact with soil may be more exposed to metals. This study provides useful information for evaluating the levels of metal exposure among general populations.

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Urine metals concentrations and dyslexia among children in China

Cited by 26 publications

References 56 publications

Self-Concept in Primary School Student with Dyslexia: The Relationship to Parental Rearing Styles

Self-Concept in Primary School Student with Dyslexia: The Relationship to Parental Rearing Styles

Construction of Models To Predict the Effectiveness of E-Waste Control through Capture of Volatile Organic Compounds and Metals/Metalloids Exposure Fingerprints: A Six-Year Longitudinal Study

Urinary Levels of 14 Metal Elements in General Population: A Region-Based Exploratory Study in China

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