Hair mercury levels in pregnant women in Mahshahr, Iran: Fish consumption as a determinant of exposure

Salehi, Zohreh; Esmaili-Sari, Abbas

doi:10.1016/j.scitotenv.2010.06.027

Cited by 32 publications

(16 citation statements)

References 77 publications

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“…Our ndings are consistent with the literature pertaining to the relationship between intake of aquatic species and internal dose of mercury as measured in hair 22,28,[46][47][48][49][50][51][52][53][54][55][56][57][58][59][60] . Among 66 studies of this relationship identi ed by systematic review, 44 (67%) showed that increasing sh consumption was associated with increasing hair mercury concentrations 19 .…”

Section: Discussionsupporting

confidence: 91%

Patterns of Fish and Whale Consumption in Relation to Methylmercury in Hair among Residents of Western Canadian Arctic Communities

Walker

Yuan

Girgis

et al. 2020

Preprint

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Background: Methylmercury contamination of the environment represents a substantial environmental health concern. Human exposure to methylmercury occurs primarily through consumption of fish and marine mammals. Heavily exposed subgroups include sport or subsistence fishers residing in Arctic communities. We aimed to estimate the association of fish/whale consumption patterns of Canadian Arctic subsistence fishers with the internal dose of methylmercury as measured in hair. Methods: This research was conducted within ongoing community projects led by the CAN Help Working Group in Aklavik and Fort McPherson, Northwest Territories and Old Crow, Yukon. We interviewed each participant using a fish-focused food-frequency questionnaire during September-November 2016 and collected hair samples concurrently. Methylmercury was measured in the full-length of each hair sample using gas chromatography inductively-coupled plasma-mass spectrometry. Multivariable linear regression estimated beta-coefficients and 95% confidence intervals (CIs) for the effect of fish/whale consumption on hair-methylmercury concentrations. Results: Among 101 participants who provided hair samples and diet data, the mean number of fish/whale species eaten was 3.5 (SD:1.9). The mean hair-methylmercury concentration was 0.60μg/g (SD:0.47). Fish/whale consumption was positively associated with hair-methylmercury concentration, after adjusting for sex, hair length and use of permanent hair treatments. Hair-methylmercury concentrations among participants who consumed the most fish/whale in each season ranged from 0.30- 0.50μg/g higher than those who consumed <1 meal/week. Conclusions: In this population of Canadian Arctic subsistence fishers, hair-methylmercury concentration increased with fish/whale consumption, but the maximum concentrations were below Health Canada’s 6.0μg/g threshold for safe exposure.

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Section: Discussionsupporting

confidence: 91%

Patterns of Fish and Whale Consumption in Relation to Methylmercury in Hair among Residents of Western Canadian Arctic Communities

Walker

Yuan

Girgis

et al. 2020

Preprint

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“…In 14 subpopulations consuming fish periodically from non-industry-contaminated waters in Botswana, 96 Canada, [97][98][99][100][101][102] Norway, 115 Portugal, 117 Spain, 118 Sweden, 81,92,[112][113][114]119 the United Kingdom of Great Britain and Northern Ireland 120,121 and the United States 122-131 was 0.4 µg/g (upper bound: 2.9). For 27 subpopulations from the Mediterranean, Persian Gulf and Indian Ocean (combined because of similar THHg ranges and referred to as "Mediterranean") in Albania, 132 Croatia, 133 Greece, 133,135 the Islamic Republic of Iran, [136][137][138][139] Italy, 83,133,140 Kuwait, 141 Morocco, 142 Seychelles, 143 b Estimated per capita seafood intake ranges were derived from data reported in selected studies. They were converted to kg per month for comparability.…”

Section: Selected Studiesmentioning

confidence: 99%

Global methylmercury exposure from seafood consumption and risk of developmental neurotoxicity: a systematic review

Sheehan

Burke

Navas‐Acien

et al. 2014

Bull. World Health Organ.

232

124

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“…A single strand of hair was collected on the day of examination for baseline values and then 3 months later and was subjected to the atomic absorption spectrophotometer (AAS). 9 …”

Section: Methodsmentioning

confidence: 99%

Mercury Exposure Levels in Children with Dental Amalgam Fillings

Shetty¹,

Varkey²

2014

International Journal of Clinical Pediatric Dentistry

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ABSTRACT%Objectives: Mercury combined with other metals to form solid amalgams has long been used in reconstructive dentistry but its use has been controversial since at least the middle of the 19th century. The exposure and body burden of mercury reviews have consistently stated that there is a deficiency of adequate epidemiological studies addressing this issue. Fish and dental amalgam are two major sources of human exposure to organic (MeHg) and inorganic Hg respectively.Materials and methods: A total of 150 subjects aged between 9 and 14 years were divided into two groups of 75 subjects each depending on their diet, i.e. seafood or nonseafood consuming. Each category was subdivided into three groups based on number of restorations. Scalp hair and urine samples were collected at baseline and 3 months later to assess the organic and inorganic levels of mercury respectively by atomic absorption spectrophotometer (AAS).Results: The mean values of urinary mercury (inorganic mercury) in the group of children with restorations were 1.5915 μg/l as compared to 0.0130 μg/l in the groups with no amalgam restorations (p < 0.001) (Wilcoxon sign rank test and paired t-test). The hair mercury levels (organic mercury) varied signi-ficantly between the fsh-eating group and nonfsh-eating group, the average values being 1.03 μg/l and 0.84 μg/l respectively (p < 0.001) (Mann-Whitney U-test and paired t-test).Conclusion and significance: The notion about the mercury being released from the amalgam restorations as a sole exposure source needs to be put to a rest, as environmental factors collectively overpower the exposure levels from restorations alone.How to cite this article: Varkey IM, Shetty R, Hegde A. Mercury Exposure Levels in Children with Dental Amalgam Fillings. Int J Clin Pediatr Dent 2014;7(3):180-185.

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Hair mercury levels in pregnant women in Mahshahr, Iran: Fish consumption as a determinant of exposure

Cited by 32 publications

References 77 publications

Patterns of Fish and Whale Consumption in Relation to Methylmercury in Hair among Residents of Western Canadian Arctic Communities

Patterns of Fish and Whale Consumption in Relation to Methylmercury in Hair among Residents of Western Canadian Arctic Communities

Global methylmercury exposure from seafood consumption and risk of developmental neurotoxicity: a systematic review

Mercury Exposure Levels in Children with Dental Amalgam Fillings

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