1
|
Notario Barandiaran L, Bauer JA, Jackson BP, Karagas MR. Fish intake and mercury exposure in young children. ENVIRONMENTAL RESEARCH 2024; 257:119277. [PMID: 38821458 DOI: 10.1016/j.envres.2024.119277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 05/24/2024] [Accepted: 05/28/2024] [Indexed: 06/02/2024]
Abstract
Fish consumption is one of the main sources of mercury (Hg) exposure, but few studies have examined Hg exposure from fish consumption among children. This study aimed to assess the frequency of fish intake and associations with Hg and other element concentrations among 700 three-year-old children from the New Hampshire Birth Cohort Study. Usual fish intake was derived from a validated food frequency questionnaire (Block Questionnaire for ages 2-7) and toenail element concentrations were determined using ICP-MS. Multiple linear regression analysis was used to assess the association between fish intake and toenail element concentrations. A mixture analysis, using Weighted quantile sum (WQS) regression, was used to estimate the relative contribution of fish consumption to element exposures. Twenty-three percent of children were reported to consume at least one fish meal/week on average during the previous 6 months. In adjusted linear regression models, children with any type of fish consumption versus no consumption had 108% (95% confidence interval (CI: 68%, 153%)) higher toenail Hg concentrations. To a lesser extent, children consuming "other fish (not fried) including tuna" and "fried fish or fish sticks" had 120% (95% CI: 82%, 164%), and 23% (95% CI: 2%, 51%) higher toenail concentrations, respectively, than those consuming no fish. Using WQS regression, Hg was the element most strongly related to fish consumption. Fish intake among young children was related to Hg exposure even at low levels of consumption. Future studies will need to determine the health consequences of this exposure.
Collapse
Affiliation(s)
| | - Julia A Bauer
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL, 60612, USA
| | - Brian P Jackson
- Trace Element Analysis Laboratory, Earth Sciences, Dartmouth College, Hanover, NH, 03755, USA
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755, USA
| |
Collapse
|
2
|
Gump BB, Hruska B, Heffernan K, Brann LS, Voss M, Labrie-Cleary C, Cheng H, MacKenzie JA, Woolf-King S, Maisto S, Bendinskas K. Race, cortisol, and subclinical cardiovascular disease in 9- to 11-year-old children. Health Psychol 2023; 42:657-667. [PMID: 37410422 PMCID: PMC10601363 DOI: 10.1037/hea0001300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/07/2023]
Abstract
BACKGROUND Non-Hispanic Black Americans have a greater risk for certain subtypes of cardiovascular disease (CVD; e.g., stroke and heart failure) relative to non-Hispanic White Americans. Moreover, Black relative to White adults consistently show elevated cortisol, a CVD risk. The impact of race, environmental stress, and cortisol on subclinical CVD has yet to be fully researched in children. METHOD We assessed diurnal salivary cortisol slopes and hair cortisol in a sample of 9- to 11-year-old children (N = 271; 54% female) with roughly half self-identifying as either Black (57%) or White (43%). Two subclinical CVD indicators were assessed: carotid-femoral pulse wave velocity (cfPWV) and carotid intima-media thickness (cIMT). We assessed numerous environmental stress indicators. RESULTS After adjusting for covariates, we found that Black children had significantly flatter diurnal cortisol slopes, higher hair cortisol, and thicker IMT than White children. Significant pathways were found: race → salivary cortisol slope → cfPWV (effect = -0.059, 95% CI [-0.116, -0.002]) and race → hair cortisol → cIMT (effect = -0.008, [-0.016, -0.002]). Black children also experienced significantly more environmental stress than White children; however, only income inequality served as a significant indirect pathway from race to salivary cortisol (effect = 0.029, [0.003, 0.060]). CONCLUSIONS Relative to White children, Black children had significantly greater hair cortisol and flatter diurnal slopes which, in turn, were associated with greater subclinical CVD. As suggested by a significant indirect pathway, income inequality might partially explain the race-cortisol association. (PsycInfo Database Record (c) 2023 APA, all rights reserved).
Collapse
Affiliation(s)
- Brooks B. Gump
- Department of Public Health, Syracuse University, United States
| | - Bryce Hruska
- Department of Public Health, Syracuse University, United States
| | - Kevin Heffernan
- Department of Exercise Science, Syracuse University, United States
| | - Lynn S. Brann
- Department of Nutrition and Food Studies, Syracuse University, United States
| | - Margaret Voss
- Department of Nutrition and Food Studies, Syracuse University, United States
| | | | - Hanna Cheng
- Department of Chemistry, State University of New York College at Oswego, United States
| | - James A. MacKenzie
- Department of Biological Sciences, State University of New York College at Oswego, United States
| | | | - Stephen Maisto
- Department of Psychology, Syracuse University, United States
| | - Kestutis Bendinskas
- Department of Chemistry, State University of New York College at Oswego, United States
| |
Collapse
|
3
|
Abasilim C, Persky V, Turyk ME. Association of Blood Total Mercury with Dyslipidemia in a sample of U.S. Adolescents: Results from the National Health and Nutrition Examination Survey Database, 2011-2018. HYGIENE AND ENVIRONMENTAL HEALTH ADVANCES 2023; 6:100047. [PMID: 38617034 PMCID: PMC11014419 DOI: 10.1016/j.heha.2023.100047] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
Background Abnormal lipid profiles in adolescents predict metabolic and cardiovascular diseases in adulthood. While seafood consumption is the primary source of mercury exposure, it also provides beneficial nutrients such as omega-3 fatty acids (O3FA). Prior studies indicate that blood total mercury (TBHg) has endocrine disrupting effects and may be associated with abnormal lipid profiles in adolescents. However, the impact of beneficial nutrients on this relationship has not been examined. Our study investigated the relationship of TBHg with dyslipidemia and lipid profiles and potential confounding and modification of these relationships by sex, body mass index (BMI), selenium and O3FA from seafood consumption. Methods We examined 1,390 National Health and Nutrition Examination Survey participants 12-19 years of age from the 2011-2018 cycles. Using logistic and linear regression adjusted for survey design variables and stratified by sex a priori, we estimated the associations of TBHg and methylmercury with dyslipidemia, and with total cholesterol (TC), high (HDL-C) and low-density lipoprotein cholesterol (LDL-C) and triglycerides. Results The geometric mean of TBHg in this adolescent population was 0.44 μg/L. After controlling for socio-demographic covariates, BMI, serum selenium, age at menarche (females only) and average daily intake of O3FA; TBHg was significantly associated with higher TC levels (β=3.34, 95% CI: 0.19, 6.50; p<0.05) in females but not males. Methyl Hg was also associated with increased TC, as well as decreased HDL-C in females but not males. We did not find significant associations of Hg exposure with dyslipidemia, LDL-C or triglycerides levels in either male or female adolescents. However, we observed evidence of effect modification by BMI and serum selenium for associations of TBHg with TC levels in male and female adolescents, respectively. Conclusion Our findings of elevated TC levels in females but not males necessitates further research to better understand the underlying mechanisms driving these sex-specific associations.
Collapse
Affiliation(s)
- Chibuzor Abasilim
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL
| | - Victoria Persky
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL
| | - Mary E. Turyk
- Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL
| |
Collapse
|
4
|
Takey M, Giannini DT, Kuschnir MCC. ERICA: prevalence of fish consumption and its association with cardiovascular risk factors and healthy behavior in Brazilian adolescents. J Pediatr (Rio J) 2022; 98:599-606. [PMID: 35381207 PMCID: PMC9617277 DOI: 10.1016/j.jped.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Revised: 02/22/2022] [Accepted: 02/23/2022] [Indexed: 11/29/2022] Open
Abstract
OBJECTIVE To describe the prevalence of fish consumption and its association with cardiovascular risk factors and healthy behavior in Brazilian adolescents. METHOD The authors investigated data from 71,533 participants of the Study of Cardiovascular Risk in Adolescents (Estudo de Riscos Cardiovasculares em Adolescentes - ERICA), a nationwide, cross-sectional, school-based study. Of these, 37,815 adolescents were included for blood analyses. All prevalence estimates were presented proportionally with their 95% confidence intervals. Bivariate relationships were evaluated with Pearson's Chi-square test, and a multinomial logistic regression model was applied, considering p < 0.05. RESULTS Prevalence of fish consumption in the 7 days prior to the interview was 28.6% (95%CI 26.9-30.3), significantly higher among male adolescents (p = 0.0049), Asian descendants (p = 0.0270), private and rural school students (p < 0.001), and who resided in the Northern region (p < 0.001). A positive association between fish consumption and healthy behavior (breakfast consumption: OR=1.16; 95%CI 1.10-1.22; meals with family members: lunch: OR = 1.07; 95%CI 1.01-1.13; dinner: OR = 1.13; 95%CI 1.04-1.23; physical activity: OR = 1.14; 95%CI 1.02-1.28) and an inverse association with hypertriglyceridemia (OR = 0.84; 95%CI 0.73-0.98) remained significant even after adjustment for possible confounding factors. CONCLUSION This study demonstrated that fish consumption was associated with lower cardiovascular risk and may represent a marker of a healthy lifestyle in Brazilian adolescents.
Collapse
Affiliation(s)
- Márcia Takey
- Universidade do Estado do Rio de Janeiro, Núcleo de Estudos da Saúde do Adolescente, Rio de Janeiro, RJ, Brazil.
| | - Denise Tavares Giannini
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Programa de Pós-Graduação em Ciências Médicas, Núcleo de Estudos da Saúde do Adolescente, Rio de Janeiro, RJ, Brazil
| | - Maria Cristina Caetano Kuschnir
- Universidade do Estado do Rio de Janeiro, Faculdade de Ciências Médicas, Programa de Pós-Graduação em Ciências Médicas, Núcleo de Estudos da Saúde do Adolescente, Rio de Janeiro, RJ, Brazil
| |
Collapse
|
5
|
Lima NS, Krishna H, Gerber BS, Heffernan KS, Gump BB, Lefferts WK. Physical activity is associated with lower pulsatile stress but not carotid stiffness in children. J Hum Hypertens 2021; 36:263-270. [PMID: 33712711 PMCID: PMC8435042 DOI: 10.1038/s41371-021-00506-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 01/25/2021] [Accepted: 02/04/2021] [Indexed: 12/31/2022]
Abstract
The cardiovascular disease (CVD) process may begin early in life when
accompanied by atherosclerotic risk factors. CVD risk factors in children are
associated with stiffening of the large elastic arteries, a reflection of
subclinical atherosclerosis. Physical activity is a preventative lifestyle
strategy that may benefit arterial stiffness by attenuating the hemodynamic
stress on the artery wall. This study examined the relations between physical
activity, carotid pulsatile stress, and carotid stiffness in children. One
hundred and forty children (9-11 yrs; 50.0% male, 57.9% African American, 42.10%
Caucasian, body mass index (BMI) 20.1±4.7 kg/m2) participated
in this study. Physical activity counts were measured using a wrist-worn
accelerometer and averaged over 7 days. Carotid artery β-stiffness and
pulse pressure (calibrated to brachial mean and diastolic pressure) were
assessed as via ultrasound and tonometry, respectively. Pulsatile stress was
calculated as the product of carotid pulse pressure and heart rate. Physical
activity counts were correlated with pulsatile stress (r= -0.27), and BMI (r=
-0.23), but were unrelated to carotid stiffness. In multivariate models,
associations between physical activity counts and pulsatile stress remained (B=
-1.3 [95%CI, -2.4, -0.2], β= -0.20, p<0.05) after covariate
adjustment for age, race, sex, pubertal stage and BMI. Carotid pulsatile stress
was related to regional carotid stiffness (r=0.45, p<0.05). These data
suggest that higher levels of physical activity at young age are associated with
lower hemodynamic stress in the carotid artery. Findings are discussed in the
context of an inverse relationship between hemodynamic pulsatile stress and
carotid stiffness in children.
Collapse
Affiliation(s)
| | - Hema Krishna
- University of Illinois at Chicago, Chicago, IL, USA
| | - Ben S Gerber
- University of Illinois at Chicago, Chicago, IL, USA
| | | | | | - Wesley K Lefferts
- University of Illinois at Chicago, Chicago, IL, USA. .,Syracuse University, Syracuse, NY, USA. .,Iowa State University, Ames, IA, USA.
| |
Collapse
|
6
|
SCREENED: A Multistage Model of Thyroid Gland Function for Screening Endocrine-Disrupting Chemicals in a Biologically Sex-Specific Manner. Int J Mol Sci 2020; 21:ijms21103648. [PMID: 32455722 PMCID: PMC7279272 DOI: 10.3390/ijms21103648] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 05/04/2020] [Accepted: 05/14/2020] [Indexed: 12/12/2022] Open
Abstract
Endocrine disruptors (EDs) are chemicals that contribute to health problems by interfering with the physiological production and target effects of hormones, with proven impacts on a number of endocrine systems including the thyroid gland. Exposure to EDs has also been associated with impairment of the reproductive system and incidence in occurrence of obesity, type 2 diabetes, and cardiovascular diseases during ageing. SCREENED aims at developing in vitro assays based on rodent and human thyroid cells organized in three different three-dimensional (3D) constructs. Due to different levels of anatomical complexity, each of these constructs has the potential to increasingly mimic the structure and function of the native thyroid gland, ultimately achieving relevant features of its 3D organization including: 1) a 3D organoid based on stem cell-derived thyrocytes, 2) a 3D organoid based on a decellularized thyroid lobe stromal matrix repopulated with stem cell-derived thyrocytes, and 3) a bioprinted organoid based on stem cell-derived thyrocytes able to mimic the spatial and geometrical features of a native thyroid gland. These 3D constructs will be hosted in a modular microbioreactor equipped with innovative sensing technology and enabling precise control of cell culture conditions. New superparamagnetic biocompatible and biomimetic particles will be used to produce "magnetic cells" to support precise spatiotemporal homing of the cells in the 3D decellularized and bioprinted constructs. Finally, these 3D constructs will be used to screen the effect of EDs on the thyroid function in a unique biological sex-specific manner. Their performance will be assessed individually, in comparison with each other, and against in vivo studies. The resulting 3D assays are expected to yield responses to low doses of different EDs, with sensitivity and specificity higher than that of classical 2D in vitro assays and animal models. Supporting the "Adverse Outcome Pathway" concept, proteogenomic analysis and biological computational modelling of the underlying mode of action of the tested EDs will be pursued to gain a mechanistic understanding of the chain of events from exposure to adverse toxic effects on thyroid function. For future uptake, SCREENED will engage discussion with relevant stakeholder groups, including regulatory bodies and industry, to ensure that the assays will fit with purposes of ED safety assessment. In this project review, we will briefly discuss the current state of the art in cellular assays of EDs and how our project aims at further advancing the field of cellular assays for EDs interfering with the thyroid gland.
Collapse
|
7
|
Yang L, Zhang Y, Wang F, Luo Z, Guo S, Strähle U. Toxicity of mercury: Molecular evidence. CHEMOSPHERE 2020; 245:125586. [PMID: 31881386 DOI: 10.1016/j.chemosphere.2019.125586] [Citation(s) in RCA: 161] [Impact Index Per Article: 40.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 11/28/2019] [Accepted: 12/08/2019] [Indexed: 05/25/2023]
Abstract
Minamata disease in Japan and the large-scale poisoning by methylmercury (MeHg) in Iraq caused wide public concerns about the risk emanating from mercury for human health. Nowadays, it is widely known that all forms of mercury induce toxic effects in mammals, and increasing evidence supports the concern that environmentally relevant levels of MeHg could impact normal biological functions in wildlife. The information of mechanism involved in mercurial toxicity is growing but knowledge gaps still exist between the adverse effects and mechanisms of action, especially at the molecular level. A body of data obtained from experimental studies on mechanisms of mercurial toxicity in vivo and in vitro points to that disruption of the antioxidant system may play an important role in the mercurial toxic effects. Moreover, the accumulating evidence indicates that signaling transduction, protein or/and enzyme activity, and gene regulation are involving in mediating toxic and adaptive response to mercury exposure. We conducted here a comprehensive review of mercurial toxic effects on wildlife and human, in particular synthesized key findings of molecular pathways involved in mercurial toxicity from the cells to human. We discuss the molecular evidence related mercurial toxicity to the adverse effects, with particular emphasis on the gene regulation. The further studies relying on Omic analysis connected to adverse effects and modes of action of mercury will aid in the evaluation and validation of causative relationship between health outcomes and gene expression.
Collapse
Affiliation(s)
- Lixin Yang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China; Center for Global Health, School of Public Health, Nanjing Medical University, 211166, Nanjing, China.
| | - Yuanyuan Zhang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Feifei Wang
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Zidie Luo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Shaojuan Guo
- State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, 100012, Beijing, China
| | - Uwe Strähle
- Toxicology and Genetics, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
8
|
Algarve TD, Assmann CE, Cadoná FC, Machado AK, Manica-Cattani MF, Sato-Miyata Y, Asano T, Duarte MMMF, Ribeiro EE, Aigaki T, da Cruz IBM. Guarana improves behavior and inflammatory alterations triggered by methylmercury exposure: an in vivo fruit fly and in vitro neural cells study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:15069-15083. [PMID: 30915696 DOI: 10.1007/s11356-019-04881-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2018] [Accepted: 03/15/2019] [Indexed: 06/09/2023]
Abstract
Methylmercury (MeHg) is a well-known environmental pollutant associated with neurological and developmental deficits in animals and humans. However, epidemiological data showed that people living in the Amazon region although exposed to MeHg do not present these effects probably due to the protective effect of certain foods. We hypothesized here if guarana, a highly caffeinated fruit and consumed on a daily basis by Amazon people, could have some protective effect against MeHg toxicity using two complementary approaches. To assess locomotor impairment and sleep disruption, we used fruit fly (Drosophila melanogaster) model, and to evaluate neuroinflammation, we used human SH-SY5Y neural cells by measuring inflammatory cytokines levels. Results showed that guarana had a protective effect on the locomotor activity of male fruit flies reducing the excessive sleepiness caused by MeHg and increasing daily activity. Also, guarana increased the viability of flies and attenuated neural cells mortality. In addition, guarana reduced all pro-inflammatory cytokines levels increased by MeHg, along with caspase-1, caspase -3, caspase-8, and 8-dOHG levels, whereas increased the anti-inflammatory (IL-10) cytokine levels, which was decreased by MeHg. Our study provides new insights on the protective effects of guarana on the viability, locomotor activity, sleep, and activity patterns in vivo and the in vitro neuronal anti-inflammatory effect against MeHg toxicity.
Collapse
Affiliation(s)
- Thaís Doeler Algarve
- Tokyo Metropolitan University, Hachioji, Tokyo, Japan
- Graduate Program in Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Av., Building 19, Room 3101, Santa Maria, RS, 97105900, Brazil
| | - Charles Elias Assmann
- Graduate Program in Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Av., Building 19, Room 3101, Santa Maria, RS, 97105900, Brazil
| | - Francine Carla Cadoná
- Graduate Program in Biosciences and Health, University of the West of Santa Catarina, Joaçaba, Brazil
| | | | | | | | - Tsunaki Asano
- Tokyo Metropolitan University, Hachioji, Tokyo, Japan
| | | | | | | | - Ivana Beatrice Mânica da Cruz
- Graduate Program in Toxicological Biochemistry, Federal University of Santa Maria, 1000 Roraima Av., Building 19, Room 3101, Santa Maria, RS, 97105900, Brazil.
- Graduate Program in Pharmacology, Federal University of Santa Maria, Santa Maria, Brazil.
| |
Collapse
|
9
|
REGIONAL AND AGE-RELATED VARIATIONS IN HAPTOGLOBIN CONCENTRATIONS IN STELLER SEA LIONS (EUMETOPIAS JUBATUS) FROM ALASKA, USA. J Wildl Dis 2019; 55:91-104. [DOI: 10.7589/2017-10-257] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
10
|
Shores DR, Everett AD. Children as Biomarker Orphans: Progress in the Field of Pediatric Biomarkers. J Pediatr 2018; 193:14-20.e31. [PMID: 29031860 PMCID: PMC5794519 DOI: 10.1016/j.jpeds.2017.08.077] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 08/04/2017] [Accepted: 08/30/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Darla R Shores
- Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD.
| | - Allen D Everett
- Division of Cardiology, Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD
| |
Collapse
|
11
|
Gao ZY, Li MM, Wang J, Yan J, Zhou CC, Yan CH. Blood mercury concentration, fish consumption and anthropometry in Chinese children: A national study. ENVIRONMENT INTERNATIONAL 2018; 110:14-21. [PMID: 29113684 DOI: 10.1016/j.envint.2017.08.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2017] [Revised: 07/31/2017] [Accepted: 08/26/2017] [Indexed: 06/07/2023]
Abstract
OBJECTIVE This study sought to obtain national cross-sectional data for blood mercury levels and risk factors for mercury exposure in Chinese children aged 0 to 6years to provide evidence to support preventive measures for reducing childhood blood mercury levels. METHODS A multi-stage, stratified, clustered random sampling survey was conducted May 2013-Mar 2015. Shanghai, Jilin, Shanxi, Guangdong, Qinghai, Yunnan and Hubei, which are located in seven different geographical regions in China, were selected as the study field. A total of 14,202 children aged 0-6years participated in the study. Whole-blood venous samples (3ml) were collected from the subjects for mercury exposure assessment. The DMA-80 was applied for mercury detection, and a health questionnaire gathering information on related confounders was completed by the subjects' parents of the subjects after they received guidance from the investigators. A general linear model was used for the primary descriptive statistical analysis. Odds ratios (ORs) and 95%CIs for the risk factors were estimated using unconditional logistic regression. RESULTS A total of 14,202 eligible samples were collected. The mean mercury level was 1.39μg/L. Other results were as follows: median 1.23μg/L, p25 0.86μg/L, p75 1.73μg/L, and GM 1.10μg/L. Of the seven geographical regions, Qinghai, in northwestern China, had a median mercury level of 0.37μg/L, which was significantly lower than the mercury level in Guangdong, in southeastern China (2.01μg/L). The median blood mercury level of children in suburban areas was 1.34μg/L, which was remarkably higher than that of children in rural areas (1.09μg/L). Dichotomous subgroups were generated using the median mercury concentration. Unconditional logistic regression analysis revealed that fish consumption may contribute to increased blood mercury levels (p<0.05). Additionally, we observed significantly positive associations between mercury concentrations and the children's anthropometric characteristics (BMI; p<0.05). CONCLUSIONS Blood mercury concentrations among Chinese children aged 0-6years were considered low, and children who consumed more marine fish, freshwater fish and shellfish tended to have higher mercury concentrations. Our study suggests that children's growth is likely affected by the positive effects of mercury, which may have implications concerning the positive effects of fish consumption.
Collapse
Affiliation(s)
- Zhen-Yan Gao
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China
| | - Min-Ming Li
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China
| | - Ju Wang
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China
| | - Jin Yan
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China
| | - Can-Can Zhou
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China
| | - Chong-Huai Yan
- Department of Child and Adolescent Healthcare, Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital Affiliated with Shanghai Jiao Tong University School of Medicine, Shanghai 200092, PR China.
| |
Collapse
|
12
|
Spatial, Temporal, and Dietary Variables Associated with Elevated Mercury Exposure in Peruvian Riverine Communities Upstream and Downstream of Artisanal and Small-Scale Gold Mining. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2017; 14:ijerph14121582. [PMID: 29244775 PMCID: PMC5751000 DOI: 10.3390/ijerph14121582] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 12/12/2017] [Accepted: 12/12/2017] [Indexed: 01/21/2023]
Abstract
Artisanal and small-scale gold mining (ASGM) is a primary contributor to global mercury and its rapid expansion raises concern for human exposure. Non-occupational exposure risks are presumed to be strongly tied to environmental contamination; however, the relationship between environmental and human mercury exposure, how exposure has changed over time, and risk factors beyond fish consumption are not well understood in ASGM settings. In Peruvian riverine communities (n = 12), where ASGM has increased 4–6 fold over the past decade, we provide a large-scale assessment of the connection between environmental and human mercury exposure by comparing total mercury contents in human hair (2-cm segment, n = 231) to locally caught fish tissue, analyzing temporal exposure in women of child bearing age (WCBA, 15–49 years, n = 46) over one year, and evaluating general mercury exposure risks including fish and non-fish dietary items through household surveys and linear mixed models. Calculations of an individual’s oral reference dose using the total mercury content in locally-sourced fish underestimated the observed mercury exposure for individuals in many communities. This discrepancy was particularly evident in communities upstream of ASGM, where mercury levels in river fish, water, and sediment measurements from a previous study were low, yet hair mercury was chronically elevated. Hair from 86% of individuals and 77% of children exceeded a USEPA (U.S. Environmental Protection Agency) provisional level (1.2 µg/g) that could result in child developmental impairment. Chronically elevated mercury exposure was observed in the temporal analysis in WCBA. If the most recent exposure exceeded the USEPA level, there was a 97% probability that the individual exceeded that level 8–10 months of the previous year. Frequent household consumption of some fruits (tomato, banana) and grains (quinoa) was significantly associated with 29–75% reductions in hair mercury. Collectively, these data demonstrate that communities located hundreds of kilometers from ASGM are vulnerable to chronically elevated mercury exposure. Furthermore, unexpected associations with fish mercury contents and non-fish dietary intake highlight the need for more in-depth analyses of exposure regimes to identify the most vulnerable populations and to establish potential interventions.
Collapse
|
13
|
Simultaneous measurement of salivary cortisol and alpha-amylase: Application and recommendations. Neurosci Biobehav Rev 2017; 83:657-677. [DOI: 10.1016/j.neubiorev.2017.08.015] [Citation(s) in RCA: 130] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/16/2017] [Accepted: 08/21/2017] [Indexed: 01/20/2023]
|
14
|
Mulk S, Korai AL, Azizullah A, Shahi L, Khattak MNK. Marble industry effluents cause an increased bioaccumulation of heavy metals in Mahaseer (Tor putitora) in Barandu River, district Buner, Pakistan. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:23039-23056. [PMID: 28825217 DOI: 10.1007/s11356-017-9921-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 08/04/2017] [Indexed: 06/07/2023]
Abstract
The present study was conducted to evaluate the impact of marble industry effluents on the accumulation of heavy metals in selected tissues of mahaseer (Tor putitora) in Barandu River. Fish samples were collected from three selected sites (upstream (US), effluents/industrial (IS), and downstream (DS) sites) on monthly basis for 8 months. Heavy metal concentrations were determined in fish tissues using Atomic Absorption Spectrophotometer. Liver accumulated the highest level of metal concentrations while the lowest concentrations were found in muscles in T. putitora. Among metals, Fe was reported in the highest amount whereas the lowest was Cd in all the fish organs. In all the months, the metal concentrations were significantly higher (P < 0.05) at IS than the other two selected sites and also very often the metal concentrations at DS were found significantly higher (P < 0.05) compared to the US. The obtained results revealed that discharging industrial effluents caused an increased accumulation of heavy metals in fish tissues at IS compared to US and DS. Furthermore, in many cases, the concentrations at DS were also found significantly higher (P < 0.05) compared to US. It is further confirmed by skewness z-score which was found to be higher than 1.96 suggesting the hazardous effects of marble industries on the collective health of the river. It is therefore recommended that all these industries either should be moved away from the bank of River Barandu or must be bound to properly treat their effluents prior to discharge into the river in order to protect the biota of River Barandu from the pollution caused by these marble industries.
Collapse
Affiliation(s)
- Shahi Mulk
- Department of Zoology, Hazara University, Mansehra, Pakistan
| | - Abdul Latif Korai
- Department of Livestock and Fisheries, Government of Sindh, Sindh, Pakistan
| | - Azizullah Azizullah
- Department of Botany, Kohat University of Science and Technology, Kohat, Pakistan
| | - Lubna Shahi
- Department of Zoology, Hazara University, Mansehra, Pakistan
| | - Muhammad Nasir Khan Khattak
- Department of Zoology, Hazara University, Mansehra, Pakistan.
- Department of Applied Biology, College of Sciences, University of Sharjah, Sharjah, United Arab Emirates.
| |
Collapse
|
15
|
The Putative Role of Environmental Mercury in the Pathogenesis and Pathophysiology of Autism Spectrum Disorders and Subtypes. Mol Neurobiol 2017; 55:4834-4856. [DOI: 10.1007/s12035-017-0692-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2017] [Accepted: 07/13/2017] [Indexed: 01/28/2023]
|
16
|
Aranda N, Valls RM, Romeu M, Sánchez-Martos V, Albaladejo R, Fernández-Castillejo S, Nogués R, Catalán Ú, Pedret A, Espinel A, Delgado MA, Arija V, Sola R, Giralt M. Consumption of seafood and its estimated heavy metals are associated with lipid profile and oxidative lipid damage on healthy adults from a Spanish Mediterranean area: A cross-sectional study. ENVIRONMENTAL RESEARCH 2017; 156:644-651. [PMID: 28463823 DOI: 10.1016/j.envres.2017.04.037] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 03/29/2017] [Accepted: 04/25/2017] [Indexed: 05/27/2023]
Abstract
The association between the consumption of seafood and its benefits on cardiovascular (CVD) risk can be challenged by its heavy metal (HM) content. This study aimed to explore the association of seafood consumption and its estimated HM contents with the lipid profile and lipid oxidation biomarkers in adults from a Spanish Mediterranean area who do not present risk factors for CVD. In this cross-sectional study, the clinical history, three-day dietary record, lipid profile (LDLc, HDLc, APOB/A, and triglyceride levels), plasma oxidised LDL (oxLDL) and 8-isoprostane levels of 81 adults without risk factors for CVD [43% men, with a mean age of 43.6 years (95%CI: 40.1-47.1)] were assessed. The HM [arsenic (As), cadmium (Cd), mercury (Hg), and lead (Pb)] contents of seafood were estimated according to data from analyses of marine species in the same Mediterranean area. Moderate adherence to the Mediterranean diet (score: 4.6 of 9) with a mean seafood consumption of 74.9g/day (95%CI: 59.9-89.9), including 22.7g of shellfish per day (95%CI: 13.5-31.9), was observed. The estimated HM contents were lower than the provisional tolerable weekly intakes (PTWIs): 21.12µg/kg/week As, 0.57µg/kg/week InAs, 0.15µg/kg/week Cd, 1.11µg/kg/week Hg and 0.28µg/kg/week Pb. After adjusting by confounder variables, an increase in shellfish consumption was associated with increases in the levels of LDLc (P=0.013), non-HDLc (P=0.015), APOB/A (P=0.02) and plasma oxLDL (P=0.002). Moreover, an increase in the estimated As and Hg levels in shellfish was associated with an increase in LDLc (P=0.015 and P=0.018, respectively), non-HDLc (P<0.008 and P<0.008, respectively), APOB/A ratio (P=0.008 and P=0.009, respectively), and oxLDL (P≤0.001 and P≤0.001, respectively) levels. In conclusion, in adults without risk factors for CVD, increasing shellfish consumption, even by a moderate amount, could favour a pro-atherogenic lipid profile and a higher level of oxidised LDL. These associations are likely influenced by the estimated exposure to As and Hg from shellfish despite these values are lower than the PTWIs.
Collapse
Affiliation(s)
- N Aranda
- Nutrition and Public Health Unit, Faculty of Medicine and Health Sciences, Research Group on Nutrition and Mental Health (NUTRISAM), Institut d'Investigació Sanitària Pere Virgili (IISPV), Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - R M Valls
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - M Romeu
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Pharmacology Unit, Faculty of Medicine and Health Science, Rovira i Virgili University, Sant Llorenç 21, Reus, Spain
| | - V Sánchez-Martos
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Pharmacology Unit, Faculty of Medicine and Health Science, Rovira i Virgili University, Sant Llorenç 21, Reus, Spain
| | - R Albaladejo
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - S Fernández-Castillejo
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - R Nogués
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Pharmacology Unit, Faculty of Medicine and Health Science, Rovira i Virgili University, Sant Llorenç 21, Reus, Spain
| | - Ú Catalán
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - A Pedret
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain
| | - A Espinel
- Grupo Leche Pascual, CENIT MED-DEV-FUN Program of the Spanish Ministry of Industry and Commercial Companies, Burgos, Spain
| | - M A Delgado
- Grupo Leche Pascual, CENIT MED-DEV-FUN Program of the Spanish Ministry of Industry and Commercial Companies, Burgos, Spain
| | - V Arija
- Nutrition and Public Health Unit, Faculty of Medicine and Health Sciences, Research Group on Nutrition and Mental Health (NUTRISAM), Institut d'Investigació Sanitària Pere Virgili (IISPV), Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain.
| | - R Sola
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Unit of Lipid and Atherosclerosis Research (URLA), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Hospital Universitari Sant Joan, IISPV, Technological Center of Nutrition and Health (CTNS), Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, Sant Llorenç 21, Reus, Spain.
| | - M Giralt
- Functional Nutrition, Oxidation and Cardiovascular Diseases Group (NFOC-Salut), Pharmacology Unit, Faculty of Medicine and Health Science, Rovira i Virgili University, Sant Llorenç 21, Reus, Spain
| |
Collapse
|
17
|
Hui LL, Chan MHM, Lam HS, Chan PHY, Kwok KM, Chan IHS, Li AM, Fok TF. Impact of fetal and childhood mercury exposure on immune status in children. ENVIRONMENTAL RESEARCH 2016; 144:66-72. [PMID: 26562044 DOI: 10.1016/j.envres.2015.11.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 10/27/2015] [Accepted: 11/03/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Mercury exposure have been shown to affect immune status in animals as reflected by cytokine expression. It is unclear whether low levels of exposure during fetal and/or childhood periods could impact on immune status in humans. OBJECTIVES To test the hypothesis that fetal and childhood mercury exposure is associated with childhood cytokine profiles and to investigate whether childhood selenium levels interact with any of the associations found. METHODS Children were recruited from a previously established birth cohort between the ages of 6-9 years for assessment and measurement of blood mercury, selenium and cytokine profile (interleukin (IL)-4, IL-6, IL-8, IL-10, IL-13 and TNF-alpha). Multivariable linear regression models were used to assess the adjusted association of cord blood mercury concentration and current mercury concentrations with levels of the cytokine levels. We tested whether the association with current mercury level varied by current selenium level and cord blood mercury level. RESULTS IL-10 was negatively associated with current blood mercury concentration. The effect was greatest in cases with low cord blood mercury and low current selenium concentrations. None of the other cytokine levels were associated with either cord blood or current blood mercury concentrations, except that cord blood mercury was negatively associated with IL-6. CONCLUSIONS Childhood mercury exposure was negatively associated with childhood IL-10 levels. It is postulated that while selenium is protective, low levels of fetal mercury exposure may increase the degree of this negative association during childhood. Further studies into the clinical significance of these findings are required.
Collapse
Affiliation(s)
- Lai Ling Hui
- School of Public Health, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong
| | - Michael Ho Ming Chan
- Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Hugh Simon Lam
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
| | - Peggy Hiu Ying Chan
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Ka Ming Kwok
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Iris Hiu Shuen Chan
- Department of Chemical Pathology, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Albert Martin Li
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Tai Fai Fok
- Department of Paediatrics, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| |
Collapse
|
18
|
González-Estecha M, Bodas-Pinedo A, Guillén-Pérez JJ, Rubio-Herrera MÁ, Martínez-Álvarez JR, Herráiz-Martínez MÁ, Martell-Claros N, Ordóñez-Iriarte JM, Sáinz-Martín M, Farré-Rovira R, Martínez-Astorquiza T, García-Donaire JA, Calvo-Manuel E, Bretón-Lesmes I, Prieto-Menchero S, Llorente-Ballesteros MT, Martínez-García MJ, Moreno-Rojas R, Salas-Salvadó J, Bermejo-Barrera P, Cuadrado-Cenzual MÁ, Gallardo-Pino C, Fuentes MB, Torres-Moreno M, Trasobares-Iglesias EM, Martín BB, Arroyo-Fernández M, Calle-Pascual A. Consensus document on the prevention of methylmercury exposure in Spain: Study group for the prevention of Me-Hg exposure in Spain (GEPREM-Hg). J Trace Elem Med Biol 2015; 32:122-34. [PMID: 26302920 DOI: 10.1016/j.jtemb.2015.05.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 05/26/2015] [Indexed: 02/04/2023]
Abstract
The beneficial effects of fish consumption in both children and adults are well known. However, the intake of methylmercury, mainly from contaminated fish and shellfish, can have adverse health effects. The study group on the prevention of exposure to methylmercury (GEPREM-Hg), made up of representatives from different Spanish scientific societies, has prepared a consensus document in a question and answer format, containing the group's main conclusions, recommendations and proposals. The objective of the document is to provide broader knowledge of factors associated with methylmercury exposure, its possible effects on health amongst the Spanish population, methods of analysis, interpretation of the results and economic costs, and to then set recommendations for fish and shellfish consumption. The group sees the merit of all initiatives aimed at reducing or prohibiting the use of mercury as well as the need to be aware of the results of contaminant analyses performed on fish and shellfish marketed in Spain. In addition, the group believes that biomonitoring systems should be set up in order to follow the evolution of methylmercury exposure in children and adults and perform studies designed to learn more about the possible health effects of concentrations found in the Spanish population, taking into account the lifestyle, eating patterns and the Mediterranean diet.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Jordi Salas-Salvadó
- Spanish Federation of Nutrition, Food and Dietetics Societies (FESNAD), Spain
| | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Schreier HMC, Hsu HH, Amarasiriwardena C, Coull BA, Schnaas L, Téllez-Rojo MM, Tamayo y Ortiz M, Wright RJ, Wright RO. Mercury and psychosocial stress exposure interact to predict maternal diurnal cortisol during pregnancy. Environ Health 2015; 14:28. [PMID: 25889585 PMCID: PMC4377006 DOI: 10.1186/s12940-015-0016-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2014] [Accepted: 03/10/2015] [Indexed: 05/20/2023]
Abstract
BACKGROUND Disrupted maternal prenatal cortisol production influences offspring development. Factors influencing the hypothalamic-pituitary-adrenal axis include social (e.g., stressful life events) and physical/chemical (e.g., toxic metals) pollutants. Mercury (Hg) is a common contaminant of fish and exposure is widespread in the US. No prior study has examined the joint associations of stress and mercury with maternal cortisol profiles in pregnancy. OBJECTIVES To investigate potential synergistic influences of prenatal stress and Hg exposures on diurnal cortisol in pregnant women. METHODS Analyses included 732 women (aged 27.4 ± 5.6 years) from a Mexico City pregnancy cohort. Participants collected saliva samples on two consecutive days (mean 19.52 ± 3.00 weeks gestation) and reported life stressors over the past 6 months. Hg was assessed in toe nail clippings collected during pregnancy. RESULTS There were no main effects of Hg or psychosocial stress exposure on diurnal cortisol (ps > .20) but strong evidence of interaction effects on cortisol slope (interaction B = .006, SE = .003, p = .034) and cortisol at times 1 and 2 (interaction B = -.071, SE = .028, p = .013; B = -.078, SE = .032, p = .014). Women above the median for Hg and psychosocial stress exposure experienced a blunted morning cortisol response compared to women exposed to higher stress but lower Hg levels. CONCLUSIONS Social and physical environmental factors interact to alter aspects of maternal diurnal cortisol during pregnancy. Research focusing solely on either domain may miss synergistic influences with potentially important consequences to the offspring.
Collapse
Affiliation(s)
- Hannah M C Schreier
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1198, New York, NY, 10029, USA.
| | - Hsiao-Hsien Hsu
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Chitra Amarasiriwardena
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| | - Brent A Coull
- Department of Biostatistics, Harvard School of Public Health, Boston, MA, USA.
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA.
| | - Lourdes Schnaas
- Division of Research on Public Health, National Institute of Perinatology, Mexico City, Mexico.
| | - Martha María Téllez-Rojo
- Center for Evaluation Research and Surveys, National Institute of Public Health, Cuernavaca, Morelos, Mexico.
| | - Marcela Tamayo y Ortiz
- Center for Research in Nutrition and Health, National Institute of Public Health, Cuernavaca, Morelos, Mexico.
| | - Rosalind J Wright
- Department of Pediatrics, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1198, New York, NY, 10029, USA.
| | - Robert O Wright
- Department of Preventive Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
| |
Collapse
|
20
|
Joo NS, Choi YH, Yeum KJ, Park SJ, Choi B, Kim YS. Blood mercury can be a factor of elevated serum ferritin: analysis of Korea National Health and Nutrition Examination Survey (KNHANES 2008-2012). Biol Trace Elem Res 2015; 164:3-7. [PMID: 25468135 DOI: 10.1007/s12011-014-0194-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 11/23/2014] [Indexed: 10/24/2022]
Abstract
Serum ferritin as well as blood mercury are reported to be associated with chronic inflammation. However, the relation between serum ferritin and blood mercury has not yet been established. We utilized the Korea National Health and Nutrition Examination Survey (KNHANES, 2008-2012) 10,977 subjects (5433 males and 5544 females). To evaluate the association of serum ferritin and blood mercury cross-sectionally, complex sample analysis was conducted after adjustment for the relevant variables. Serum concentrations of ferritin and blood mercury were higher in males than in females (115.7 ± 1.7 vs. 40.9 ± 0.7 ng/mL and 5.0 ± 0.1 vs. 3.6 ± 0.1 μg/L, respectively). Serum ferritin and blood mercury concentrations had significant correlations in both genders after adjustment (r = 0.062, P < 0.001 in males; r = 0.055, P < 0.001 in females). The analysis of covariance (ANCOVA) test showed significantly higher serum ferritin according to the tertile of blood mercury (P = 0.007) in males. The adjusted odds ratio of having the highest tertile of serum ferritin in the top tertile of blood mercury in males was 1.52 (95 % confidence interval (CI), 1.05-2.21). Thus, the current study indicates that blood mercury concentration can be a factor for the elevated serum ferritin concentration.
Collapse
|
21
|
Tinkov AA, Ajsuvakova OP, Skalnaya MG, Popova EV, Sinitskii AI, Nemereshina ON, Gatiatulina ER, Nikonorov AA, Skalny AV. Mercury and metabolic syndrome: a review of experimental and clinical observations. Biometals 2015; 28:231-54. [DOI: 10.1007/s10534-015-9823-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/15/2015] [Indexed: 12/16/2022]
|
22
|
Butts CD, Bloom MS, Frye CA, Walf AA, Parsons PJ, Steuerwald AJ, Ilonze C, Fujimoto VY. Urine cortisol concentration as a biomarker of stress is unrelated to IVF outcomes in women and men. J Assist Reprod Genet 2014; 31:1647-53. [PMID: 25298042 DOI: 10.1007/s10815-014-0359-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2014] [Accepted: 09/26/2014] [Indexed: 10/24/2022] Open
Abstract
PURPOSE Our primary objective was to assess associations between urine cortisol as a biomarker of psychological stress and in vitro fertilization (IVF) outcomes. A secondary objective was to assess associations between toxic metals and cortisol. METHODS Urine and blood specimens were collected from 52 women and 28 male partners completing a first IVF procedure, on the day of oocyte retrieval. Urine cortisol was measured with an enzyme-linked immunosorbent assay. Mercury (Hg), cadmium (Cd), and lead (Pb) were determined in blood and Cd in urine by inductively coupled plasma-mass spectrometry. RESULTS No associations were indicated for cortisol with IVF outcomes in multivariable regression models adjusted for covariates. However, we detected positive linear associations for cortisol and urine Cd (β = 9.96, 95%CI 1.52, 21.44) and blood Hg (β = 1.44, 95%CI 0.31, 3.18). An exploratory stratified analysis suggested a potential inverse association between urine cortisol and oocyte fertilization among women with low, but not high blood Hg. CONCLUSION While limited, these preliminary data suggest that psychological stress may not play a major role in IVF outcomes, which therefore could be one less concern for couples and their clinicians. Our data also raise the possibility for toxic metals to modify associations between cortisol and IVF outcomes among women. However, these preliminary results require corroboration in an experimental animal model and confirmation in a larger, more definitive observational study.
Collapse
Affiliation(s)
- Celeste D Butts
- Department of Environmental Health Sciences, University at Albany, State University of New York, Rensselaer, NY, USA
| | | | | | | | | | | | | | | |
Collapse
|
23
|
Gump BB, Gabrikova E, Bendinskas K, Dumas AK, Palmer CD, Parsons PJ, MacKenzie JA. Low-level mercury in children: associations with sleep duration and cytokines TNF-α and IL-6. ENVIRONMENTAL RESEARCH 2014; 134:228-32. [PMID: 25173056 PMCID: PMC4262607 DOI: 10.1016/j.envres.2014.07.026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 07/21/2014] [Accepted: 07/31/2014] [Indexed: 05/23/2023]
Abstract
There is a sizeable literature suggesting that mercury (Hg) exposure affects cytokine levels in humans. In addition to their signaling role in the immune system, some cytokines are also integrally associated with sleep behavior. In this cross-sectional study of 9-11 year old children (N=100), we measured total blood Hg in whole blood, serum levels of tumor necrosis factor α (TNF-α) and interleukin 6 (IL-6), and objectively measured sleep and activity using actigraphy. Increasing blood Hg was associated with significantly shorter sleep duration and lower levels of TNF-α. IL-6 was not associated with sleep or blood Hg. This study is the first to document an association between total blood Hg and sleep (albeit a small effect), and the first to consider the associations of total blood Hg with cytokines TNF-α and IL-6 in a pediatric sample. Further research using alternative designs (e.g., time-series) is necessary to determine if there is a causal pathway linking low-level Hg exposure to sleep restriction and reduced cytokines.
Collapse
Affiliation(s)
- Brooks B Gump
- Department of Public Health, Food Studies, and Nutrition, Syracuse University, United States.
| | - Elena Gabrikova
- Departments of Biological Sciences, State University of New York College at Oswego, United States
| | - Kestutis Bendinskas
- Departments of Chemistry, State University of New York College at Oswego, United States
| | - Amy K Dumas
- Department of Public Health, Food Studies, and Nutrition, Syracuse University, United States
| | - Christopher D Palmer
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, United States; Department of Environmental Health Sciences, School of Public Health, The University at Albany, United States
| | - Patrick J Parsons
- Laboratory of Inorganic and Nuclear Chemistry, Wadsworth Center, New York State Department of Health, United States; Department of Environmental Health Sciences, School of Public Health, The University at Albany, United States
| | - James A MacKenzie
- Departments of Biological Sciences, State University of New York College at Oswego, United States
| |
Collapse
|
24
|
Oken E, Guthrie LB, Bloomingdale A, Gillman MW, Olsen SF, Amarasiriwardena CJ, Platek DN, Bellinger DC, Wright RO. Assessment of dietary fish consumption in pregnancy: comparing one-, four- and thirty-six-item questionnaires. Public Health Nutr 2014; 17:1949-59. [PMID: 23883550 PMCID: PMC4325983 DOI: 10.1017/s1368980013001985] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
OBJECTIVE Fish consumption influences a number of health outcomes. Few studies have directly compared dietary assessment methods to determine the best approach to estimating intakes of fish and its component nutrients, including DHA, and toxicants, including methylmercury. Our objective was to compare three methods of assessing fish intake. DESIGN We assessed 30 d fish intake using three approaches: (i) a single question on total fish consumption; (ii) a brief comprehensive FFQ that included four questions about fish; and (iii) a focused FFQ with thirty-six questions about different finfish and shellfish. SETTING Obstetrics practices in Boston, MA, USA. SUBJECTS Fifty-nine pregnant women who consumed ≤2 monthly fish servings. RESULTS Estimated intakes of fish, DHA and Hg were lowest with the one-question screener and highest with the thirty-six-item fish questionnaire. Estimated intake of DHA with the thirty-six-item questionnaire was 4·4-fold higher (97 v. 22 mg/d), and intake of Hg was 3·8-fold higher (1·6 v. 0·42 μg/d), compared with the one-question screener. Plasma DHA concentration was correlated with fish intake assessed with the one-question screener (Spearman r = 0·27, P = 0·04), but not with the four-item FFQ (r = 0·08, P = 0·54) or the thirty-six-item fish questionnaire (r = 0·01, P = 0·93). In contrast, blood and hair Hg concentrations were similarly correlated with fish and Hg intakes regardless of the assessment method (r = 0·35 to 0·52). CONCLUSIONS A longer questionnaire provides no advantage over shorter questionnaires in ranking intakes of fish, DHA and Hg compared with biomarkers, but estimates of absolute intakes can vary by as much as fourfold across methods.
Collapse
Affiliation(s)
- Emily Oken
- 1Department of Population Medicine,Harvard Medical School and the Harvard Pilgrim Health Care Institute,133 Brookline Avenue,Boston,MA 02215,USA
| | - Lauren B Guthrie
- 1Department of Population Medicine,Harvard Medical School and the Harvard Pilgrim Health Care Institute,133 Brookline Avenue,Boston,MA 02215,USA
| | - Arienne Bloomingdale
- 1Department of Population Medicine,Harvard Medical School and the Harvard Pilgrim Health Care Institute,133 Brookline Avenue,Boston,MA 02215,USA
| | - Matthew W Gillman
- 1Department of Population Medicine,Harvard Medical School and the Harvard Pilgrim Health Care Institute,133 Brookline Avenue,Boston,MA 02215,USA
| | - Sjurdur F Olsen
- 2Department of Nutrition,Harvard School of Public Health,Boston,MA,USA
| | | | - Deborah N Platek
- 4Department of Obstetrics and Gynecology,Harvard Vanguard Medical Associates,Boston,MA,USA
| | | | | |
Collapse
|
25
|
Wang X, Qu R, Wei Z, Yang X, Wang Z. Effect of water quality on mercury toxicity to Photobacterium phosphoreum: Model development and its application in natural waters. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2014; 104:231-238. [PMID: 24726934 DOI: 10.1016/j.ecoenv.2014.03.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 03/23/2014] [Accepted: 03/24/2014] [Indexed: 06/03/2023]
Abstract
Mercury (Hg) compounds are widely distributed toxic environmental and industrial pollutants and they may bring danger to growth and development of aquatic organisms. The distribution of Hg species in the 3 percent NaCl solution was calculated using the chemical equilibrium model Visual MINTEQ, which demonstrated that Hg was mainly complexed by chlorides in the pH range 5.0-9.0 and the proportions of HgCl4(2-), HgCl3(-) and HgCl2(aq) reached to 95 percent of total Hg. Then the effects of cations (Ca(2+), Mg(2+), K(+) and H(+)), anions (HCO3(-), NO3(-), SO4(2-) and HPO4(2-)) and complexing agents (ethylene diamine tetraacetic acid (EDTA) and dissolved organic matter (DOM)) on Hg toxicity to Photobacterium phosphoreum were evaluated in standardized 15min acute toxicity tests. The significant increase of 6.3-fold in EC50 data with increasing pH was observed over the tested pH range of 5.0-8.0, which suggested the possible competition between hydroxyl and the negatively charged chloro-complex. By contrast, it was found that major cations (Ca(2+), Mg(2+) and K(+)) have little effect on Hg toxicity to P. phosphoreum. An interesting finding was that the addition of HPO4(2-) significantly increased Hg toxicity, which may imply that the addition of phosphate increased the soluble Hg-chloro complex species. Additions of complexing agents (EDTA and DOM) into the exposure water increased Hg bioavailability via complexation of Hg. Finally, a model which incorporated the effect of pH, HPO4(2-), HCO3(-), SO4(2-) and DOM on Hg toxicity was developed to predict acute Hg toxicity for P. phosphoreum, which may be a useful tool in setting realistic water quality criteria for different types of water.
Collapse
Affiliation(s)
- Xinghao Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environment, Nanjing University, Nanjing 210026, Jiangsu, PR China
| | - Ruijuan Qu
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environment, Nanjing University, Nanjing 210026, Jiangsu, PR China
| | - Zhongbo Wei
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environment, Nanjing University, Nanjing 210026, Jiangsu, PR China
| | - Xi Yang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environment, Nanjing University, Nanjing 210026, Jiangsu, PR China
| | - Zunyao Wang
- State Key Laboratory of Pollution Control and Resources Reuse, School of Environment, Nanjing University, Nanjing 210026, Jiangsu, PR China.
| |
Collapse
|
26
|
Hajihashemi P, Azadbakht L, Hashemipor M, Kelishadi R, Esmaillzadeh A. Whole-grain intake favorably affects markers of systemic inflammation in obese children: A randomized controlled crossover clinical trial. Mol Nutr Food Res 2014; 58:1301-8. [DOI: 10.1002/mnfr.201300582] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2013] [Revised: 12/09/2013] [Accepted: 12/11/2013] [Indexed: 12/12/2022]
Affiliation(s)
- Parisa Hajihashemi
- Food Security Research Center; Isfahan University of Medical Sciences; Isfahan Iran
- Department of Community Nutrition, School of Nutrition and Food Science; Isfahan University of Medical Sciences; Isfahan Iran
| | - Leila Azadbakht
- Food Security Research Center; Isfahan University of Medical Sciences; Isfahan Iran
- Department of Community Nutrition, School of Nutrition and Food Science; Isfahan University of Medical Sciences; Isfahan Iran
| | - Mahin Hashemipor
- Pediatrics Department; Faculty of Medicine and Child Growth and Development Research Center; Isfahan University of Medical Sciences; Isfahan Iran
| | - Roya Kelishadi
- Pediatrics Department; Faculty of Medicine and Child Growth and Development Research Center; Isfahan University of Medical Sciences; Isfahan Iran
| | - Ahmad Esmaillzadeh
- Food Security Research Center; Isfahan University of Medical Sciences; Isfahan Iran
- Department of Community Nutrition, School of Nutrition and Food Science; Isfahan University of Medical Sciences; Isfahan Iran
| |
Collapse
|
27
|
Kim BH, Moon PG, Lee JE, Lee S, Kim SK, Lee JK, Kim SH, Baek MC. Identification of Potential Serum Biomarkers in Mercury-Treated Mice Using a Glycoproteomic Approach. Int J Toxicol 2013; 32:368-75. [DOI: 10.1177/1091581813504969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Mercury is a well-recognized health hazard and a deleterious environmental contaminant. Exposure to mercury can cause neurotoxic manifestations, nephrotoxicity, and immune function alterations; however, the mechanisms and related proteins responsible for these effects are still unclear. Our goal is to understand the relationship between the toxicity of mercury and the proteins affected by this toxic heavy metal and to define biomarkers for mercury intoxication. Two different forms of mercury, organic methylmercury or inorganic mercury sulfide, were orally administered to the mice for 4 weeks. To reduce complexity of the serum proteome, we enriched glycoproteins from mice serum with lectin concanavalin A resin, and the tryptic peptides of the purified glycoproteins were subjected to nanoultra performance liquid chromatography-Quadrupole time-of-flight for identification and label-free quantification. In this study, we characterized approximately 209 proteins from mice serum, and, among them, 21 proteins were differentially expressed in organic methylmercury-treated mice serum compared with the control group. Two proteins, serum amyloid P component (SAP) and inter α-trypsin inhibitor heavy chain 4 (ITI-H4), were upregulated in organic methylmercury-treated mice and confirmed with different doses of both types of mercury by Western blot analysis. Results of immunohistochemistry also confirmed the validity of SAP and ITI-H4 as biomarker candidates for organic methylmercury exposure. Findings of this study may assist in understanding the relationship between toxicity of mercury and upregulated proteins in mouse serum. Furthermore, the proteins identified here might be used as biomarker candidates in mercury intoxication.
Collapse
Affiliation(s)
- Bong-Hwa Kim
- Department of Molecular Medicine, Cell and Matrix Biology Research Institute, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Pyong-Gon Moon
- Department of Molecular Medicine, Cell and Matrix Biology Research Institute, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Jeong-Eun Lee
- Department of Molecular Medicine, Cell and Matrix Biology Research Institute, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Soyoung Lee
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Sook-Kyung Kim
- Division of Metrology for Quality of Life, Center for Bioanalysis, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea
| | - Jong Kwon Lee
- Toxicological Research Division, National Institute of Food and Drug Safety Evaluation, Ministry of Food and Drug Safety, Chungbuk, Republic of Korea
| | - Sang-Hyun Kim
- Department of Pharmacology, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Moon-Chang Baek
- Department of Molecular Medicine, Cell and Matrix Biology Research Institute, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| |
Collapse
|
28
|
Wang F, Chmil C, Pierce F, Ganapathy K, Gump BB, MacKenzie JA, Metchref Y, Bendinskas K. Immobilized metal affinity chromatography and human serum proteomics. J Chromatogr B Analyt Technol Biomed Life Sci 2013; 934:26-33. [PMID: 23896426 DOI: 10.1016/j.jchromb.2013.06.032] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2013] [Revised: 05/25/2013] [Accepted: 06/30/2013] [Indexed: 11/15/2022]
Abstract
Metal-binding proteins have a pivotal role in normal and diseased states. We used metal affinity chromatography to enrich a fraction of human serum proteins on immobilized columns loaded with cadmium, nickel, zinc, copper, or lead in bis-Tris saline and these proteins were identified using LC-MS/MS. Tens of enriched proteins were identified and we here present the 20 most abundant for binding each metal. The binding of various proteins (complement C3, alpha-2-macroglobulin, serum albumin, apolipoprotein B-100, complement component 4B preproprotein, apolipoprotein A-I, serotransferrin, alpha-1-antitrypsin, ceruloplasmin, 47kDa protein, uncharacterized protein DKFZp686P15220, transthyretin, hemopexin, inter-alpha-trypsin inhibitor heavy chain H2, and histidine-rich glycoprotein) to different metals using immobilized metal affinity chromatography was compared to the literature. Although many metal-binding properties of these proteins have been confirmed, new metal-binding proteins have also been identified. The metal array use in the proteomic biomarker search technologies gives this data particular importance.
Collapse
Affiliation(s)
- Fengrong Wang
- Department of Chemistry, SUNY-Oswego, Oswego, NY 13126, USA.
| | | | | | | | | | | | | | | |
Collapse
|
29
|
Kong HK, Wong MH, Chan HM, Lo SCL. Chronic exposure of adult rats to low doses of methylmercury induced a state of metabolic deficit in the somatosensory cortex. J Proteome Res 2013; 12:5233-45. [PMID: 23984759 DOI: 10.1021/pr400356v] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Because of the ever-increasing bioaccumulation of methylmercury (MeHg) in the marine food chain, human consumers are exposed to low doses of MeHg continually through seafood consumption. Epidemiological studies strongly suggest that chronic prenatal exposure to nanomolar of MeHg has immense negative impacts on neurological development in neonates. However, effects of chronic exposure to low doses (CELDs) of MeHg in adult brains on a molecular level are unknown. The current study aims to investigate the molecular effects of CELD of MeHg on adult somatosensory cortex in a rat model using proteomic techniques. Young adult rats were fed with a low dose of MeHg (40 μg/kg body weight/day) for a maximum of 12 weeks. Whole proteome expression of the somatosensory cortex (S1 area) of normal rats and those with CELD to MeHg were compared. Levels of MeHg, total calcium, adenosine triphosphate (ATP), and pyruvate were also measured. Comparative proteomic studies of the somatosensory cortexes revealed that 94 proteins involved in the various metabolic processes (including carbohydrate metabolism, generation of precursors for essential metabolites, energy, proteins, cellular components for morphogenesis, and neurotransmission) were down-regulated. Consequently, levels of important end products of active metabolism including ATP, pyruvate, and total calcium were also found to be significantly reduced concomitantly. Our results showed that CELD of MeHg induced a state of metabolic deficit in the somatosensory cortex of adult rats.
Collapse
Affiliation(s)
- Hang-Kin Kong
- Food Safety and Technology Research Centre, The Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University , Room Y810, Lee Shau Kee Building (Block Y), Hung Hom, Hong Kong, China
| | | | | | | |
Collapse
|
30
|
Rahmawaty S, Charlton K, Lyons-Wall P, Meyer BJ. Factors that influence consumption of fish and omega-3-enriched foods: A survey of Australian families with young children. Nutr Diet 2013. [DOI: 10.1111/1747-0080.12022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Setyaningrum Rahmawaty
- Metabolic Research Centre; University of Wollongong; Wollongong New South Wales Australia
- School of Health Sciences; Faculty of Health and Behaviour Sciences; University of Wollongong; Wollongong New South Wales Australia
| | - Karen Charlton
- Metabolic Research Centre; University of Wollongong; Wollongong New South Wales Australia
| | - Philippa Lyons-Wall
- School of Exercise and Health Sciences; Faculty of Computing, Health and Science; Edith Cowan University; Perth Western Australia Australia
| | - Barbara J. Meyer
- Metabolic Research Centre; University of Wollongong; Wollongong New South Wales Australia
- School of Health Sciences; Faculty of Health and Behaviour Sciences; University of Wollongong; Wollongong New South Wales Australia
| |
Collapse
|
31
|
Hassauer M, Kaiser E, Schneider K, Schuhmacher‐Wolz U. Collate the literature on toxicity data on mercury in experimental animals and humans (Part I – Data on organic mercury). ACTA ACUST UNITED AC 2012. [DOI: 10.2903/sp.efsa.2012.en-297] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Hassauer
- Forschungs‐ und Beratungsinstitut Gefahrstoffe GmbH (FoBiG) Freiburg Germany
| | - Eva Kaiser
- Forschungs‐ und Beratungsinstitut Gefahrstoffe GmbH (FoBiG) Freiburg Germany
| | - Klaus Schneider
- Forschungs‐ und Beratungsinstitut Gefahrstoffe GmbH (FoBiG) Freiburg Germany
| | | |
Collapse
|