Identifying a critical window of maternal metal exposure for maternal and neonatal thyroid function in China: A cohort study

Wang, Xu; Sun, Xian; Zhang, Yuqing; Chen, Minjian; Villanger, Gro Dehli; Aase, Heidi; Xia, Yankai

doi:10.1016/j.envint.2020.105696

Cited by 32 publications

(13 citation statements)

References 45 publications

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“…The concentrations of 17 trace elements and toxic metals including V, Cr, Mn, Fe, cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), As, molybdenum (Mo), palladium (Pd), cadmium (Cd), Sn, gold (Au), mercury (Hg), thallium (Tl), and Pb were quantified using an iCAP Qc inductively coupled plasma mass spectrometry (ICP–MS) equipment (Thermo Fisher Scientific). The detailed element quantitative detection methods were described in our previous studies. , Briefly, 60 μL of urine sample was mixed with 150 μL nitric acid for 3 h, then made up to 1.8 mL with water. After centrifugation, the supernatant was subjected to ICP–MS analysis.…”

Section: Methodsmentioning

confidence: 99%

Maternal Exposure to Trace Elements, Toxic Metals, and Longitudinal Changes in Infancy Anthropometry and Growth Trajectories: A Prospective Cohort Study

Zhang

Wei

Guan

et al. 2023

Environ. Sci. Technol.

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Exploration of stage-specific effects of maternal exposure to trace elements and toxic metals on infancy continuous growth and trajectories is critical for early-life health management. Within a Chinese prospective cohort in 2014–2015, a total of 919 mother–infant pairs were included, and the urinary levels of 17 elements including vanadium (V), chromium (Cr), manganese, iron, cobalt, nickel, copper, zinc, arsenic, molybdenum, palladium, cadmium, tin, gold, mercury, thallium, and lead in early (mean: 11.9 weeks), and late pregnancy (mean: 32.4 weeks) were assessed. Standardized anthropometric assessments of infants were conducted at 1, 3, 6, 8, and 12 months of age. A three-step longitudinal and high-dimensional data analysis procedure was carried out to estimate the impacts of exposome on dynamic growth. Early-pregnancy exposures to V and Cr were positively associated with repeated measurements of length-for-age z-scores (LAZ). Six trajectories were identified based on LAZ. Maternal single exposure to V and Cr as well as mixed exposure to trace elements in early pregnancy were associated with raised odds for the high-stable group. Our results suggested positive associations between maternal trace element exposome and infancy dynamic growth. V and Cr were the key elements and the early pregnancy might be the critical window.

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Section: Methodsmentioning

confidence: 99%

Maternal Exposure to Trace Elements, Toxic Metals, and Longitudinal Changes in Infancy Anthropometry and Growth Trajectories: A Prospective Cohort Study

Zhang

Wei

Guan

et al. 2023

Environ. Sci. Technol.

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“…Kalamegham et al 24 stated in their study that the sole use of nitric acid as diluent in mercury quantication proved useless because of poor and erratic recoveries even for higher acid concentrations. Since HNO 3 is still used in more recent studies, 18,19 we investigated its application using diluent C and conrmed the observations made by Kalamegham's workgroup. Interestingly, the addition of hydrochloric acid (diluent B), which is commonly used to stabilize Hg by forming the Testing HCl concentrations up to 1% (w v −1 ) resulted in poor recovery, too (data not shown).…”

Section: Stabilization Of Hgmentioning

confidence: 99%

“…Usually, samples are diluted 5-20 fold with nitric and/or hydrochloric acid. [13][14][15][16][17][18][19][20] In some protocols, certain amounts of modiers like potassium dichromate, gold chloride, ethylenediaminetetraacetic acid (EDTA), cysteine and thiourea are added in various combinations to prevent volatilization and adsorption. [21][22][23][24][25] Nevertheless, extensive rinsing of the introduction system aer each sample remains necessary to avoid memory effects, 15,22,24 leading to prolonged acquisition times.…”

Section: Introductionmentioning

confidence: 99%

A method for reliable quantification of mercury in occupational and environmental medical urine samples by inductively coupled plasma mass spectrometry

2023

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“…Environmental contamination by mercury (Hg) is a problem of global scale that affects human health in high-income countries, such as Sweden, Canada, Japan, the United States of America and Finland [ 1 , 2 , 3 , 4 ], as well as in lower- and middle-income countries (LMIC), such as Brazil, China, Venezuela, Colombia and Iraq [ 1 , 5 , 6 , 7 ].…”

Section: Introductionmentioning

confidence: 99%

Mercury Exposure in Women of Reproductive Age in Rondônia State, Amazon Region, Brazil

Bello

Buralli

Cunha

et al. 2023

IJERPH

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Environmental contamination by mercury (Hg) is a problem of global scale that affects human health. This study’s aim was to evaluate Hg exposure among women of reproductive age residing in the Madeira River basin, in the State of Rondônia, Brazilian Amazon. This longitudinal cohort study used linear regression models to assess the effects on Hg levels of breastfeeding duration at 6 months, and of breastfeeding duration and number of new children at 2-year and 5-year. Breastfeeding duration was significantly associated with maternal Hg levels in all regression models (6 months, 2 years and 5 years) and no significant association was observed between the number of children and the change in maternal Hg levels in the 2-year and 5-year models. This longitudinal cohort study evaluated Hg levels and contributing factors among pregnant women from different communities (riverine, rural, mining and urban) in Rondônia, Amazon Region, for 5 years. A well-coordinated and designed national biomonitoring program is urgently needed to better understand the current situation of Hg levels in Brazil and the Amazon.

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Identifying a critical window of maternal metal exposure for maternal and neonatal thyroid function in China: A cohort study

Cited by 32 publications

References 45 publications

Maternal Exposure to Trace Elements, Toxic Metals, and Longitudinal Changes in Infancy Anthropometry and Growth Trajectories: A Prospective Cohort Study

Maternal Exposure to Trace Elements, Toxic Metals, and Longitudinal Changes in Infancy Anthropometry and Growth Trajectories: A Prospective Cohort Study

A method for reliable quantification of mercury in occupational and environmental medical urine samples by inductively coupled plasma mass spectrometry

Mercury Exposure in Women of Reproductive Age in Rondônia State, Amazon Region, Brazil

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