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Dauter UM, Alhamdow A, Cediel-Ulloa A, Gliga AR, Albin M, Broberg K. Cancer-related changes and low-to-moderate exposure to welding fumes: A longitudinal study. Scand J Work Environ Health 2021; 48:21-30. [PMID: 34570895 PMCID: PMC8729166 DOI: 10.5271/sjweh.3988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Objective This study tested for an association between early cancer-related biomarkers and low-to-moderate exposure to fumes from welding mild steel. Methods Male, non-smoking participants from southern Sweden were recruited and examined (N=338, 171 welders and 167 controls); of these, 78 welders and 96 controls were examined on two occasions six years apart. Exposure to welding fumes was evaluated by measuring respirable dust, welding years, and cumulative exposure. DNA methylation of CpG sites within the cancer-related genes AHRR, F2RL3, and B3GNTL1 was measured by pyrosequencing and relative mitochondrial DNA copy number and telomere length were measured by qPCR in whole-blood samples. Multivariate models were used for longitudinal analysis. Results Median exposure to respirable dust was 0.7 mg/m3 at both timepoints, adjusted for use of personal protective equipment. Compared with controls, welders showed a significant decrease over time in DNA methylation of B3GNTL1 CpG1 and CpG4 [adjusted for age, body mass index, and smoking: β=-0.66, standard error (SE)=0.28; β=-0.48, SE=0.24, respectively]. In addition, exposure to respirable dust and cumulative exposure was associated with a decrease in methylation of F2RL3 CpG2 among all welders (adjusted β=-0.67, SE=0.23 and β=-0.03, SE=0.02, respectively). No significant associations were found for AHRR, mitochondrial DNA copy number, or telomere length. Conclusion Low-to-moderate exposure to welding fumes was associated with a small effect on selected early epigenetic biomarkers of cancer. The direction of the methylation pattern (lower methylation of specific CpG sites) indicates early lung cancer-related changes associated with mild steel welding.
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Affiliation(s)
- Ulrike Maria Dauter
- Institute of Environmental Medicine, Karolinska Institutet, Nobels väg 13, 171 77, Stockholm, Sweden.
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Dauter U, Alhamdow A, Cediel-Ulloa A, Gudmundsson A, Gliga A, Albin M, Broberg K. Occupational welding exposure and lung cancer-related epigenetic modifications. Toxicol Lett 2021. [DOI: 10.1016/s0378-4274(21)00422-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Alhamdow A, Zettergren A, Kull I, Hallberg J, Andersson N, Ekström S, Berglund M, Wheelock CE, Essig YJ, Krais AM, Georgelis A, Lindh CH, Melén E, Bergström A. Low-level exposure to polycyclic aromatic hydrocarbons is associated with reduced lung function among Swedish young adults. Environ Res 2021; 197:111169. [PMID: 33857464 DOI: 10.1016/j.envres.2021.111169] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 03/15/2021] [Accepted: 04/08/2021] [Indexed: 05/25/2023]
Abstract
BACKGROUND Exposure to polycyclic aromatic hydrocarbons (PAHs) has been linked to adverse pulmonary effects. However, the impact of low-level environmental PAH exposure on lung function in early adulthood remains uncertain. OBJECTIVES To evaluate the associations between urinary PAH metabolites and lung function parameters in young adults. METHODS Urinary metabolites of pyrene, phenanthrene, and fluorene were analysed in 1000 young adults from Sweden (age 22-25 years) using LC-MS/MS. Lung function and eosinophilic airway inflammation were measured by spirometry and exhaled nitric oxide fraction (FeNO), respectively. Linear regression analysis was used to evaluate associations between PAH metabolites and the outcomes. RESULTS Median urinary concentrations of 1-OH-pyrene, ∑OH-phenanthrene, and ∑OH-fluorene were 0.066, 0.36, 0.22 μg/L, respectively. We found inverse associations of ∑OH-phenanthrene and ∑OH-fluorene with FEV1 and FVC, as well as between 1-OH-pyrene and FEV1/FVC ratio (adjusted P < 0.05; all participants). An increase of 1% in ∑OH-fluorene was associated with a decrease of 73 mL in FEV1 and 59 mL in FVC. In addition, ∑OH-phenanthrene concentrations were, in a dose-response manner, inversely associated with FEV1 (B from -109 to -48 compared with the lowest quartile of ∑OH-phenanthrene; p trend 0.004) and FVC (B from -159 to -102 compared with lowest quartile; p-trend <0.001). Similar dose-response associations were also observed between ∑OH-fluorene and FEV1 and FVC, as well as between 1-OH-pyrene and FEV1/FVC (p-trend <0.05). There was no association between PAH exposure and FeNO, nor was there an interaction with smoking, sex, or asthma. CONCLUSION Low-level PAH exposure was, in a dose-response manner, associated with reduced lung function in young adults. Our findings have public health implications due to i) the widespread occurrence of PAHs in the environment and ii) the clinical relevance of lung function in predicting all-cause and cardiovascular disease mortality.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden
| | - Anna Zettergren
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden
| | - Inger Kull
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Sachs' Children's and Youth Hospital, Södersjukhuset, SE, 11883, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, SE, 11883, Stockholm, Sweden
| | - Jenny Hallberg
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Sachs' Children's and Youth Hospital, Södersjukhuset, SE, 11883, Stockholm, Sweden
| | - Niklas Andersson
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden
| | - Sandra Ekström
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, SE, 11365, Stockholm, Sweden
| | - Marika Berglund
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden
| | - Craig E Wheelock
- Division of Physiological Chemistry 2, Department of Medical Biochemistry and Biophysics, Karolinska Institute, SE-171 77, Department of Respiratory Medicine and Allergy, Karolinska University Hospital, SE, 17165, Stockholm, Sweden
| | - Yona J Essig
- Division of Occupational and Environmental Medicine, Lund University, SE, 22363, Lund, Sweden
| | - Annette M Krais
- Division of Occupational and Environmental Medicine, Lund University, SE, 22363, Lund, Sweden
| | - Antonios Georgelis
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, SE, 11365, Stockholm, Sweden
| | - Christian H Lindh
- Division of Occupational and Environmental Medicine, Lund University, SE, 22363, Lund, Sweden
| | - Erik Melén
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Sachs' Children's and Youth Hospital, Södersjukhuset, SE, 11883, Stockholm, Sweden; Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, SE, 11883, Stockholm, Sweden
| | - Anna Bergström
- Institute of Environmental Medicine, Karolinska Institutet, SE, 17177, Stockholm, Sweden; Centre for Occupational and Environmental Medicine, Region Stockholm, SE, 11365, Stockholm, Sweden.
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Yeates AJ, Zavez A, Thurston SW, McSorley EM, Mulhern MS, Alhamdow A, Engström K, Wahlberg K, Strain JJ, Watson GE, Myers GJ, Davidson PW, Shamlaye CF, Broberg K, van Wijngaarden E. Maternal Long-Chain Polyunsaturated Fatty Acid Status, Methylmercury Exposure, and Birth Outcomes in a High-Fish-Eating Mother-Child Cohort. J Nutr 2020; 150:1749-1756. [PMID: 32433731 PMCID: PMC7330473 DOI: 10.1093/jn/nxaa131] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2019] [Revised: 03/06/2020] [Accepted: 04/14/2020] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Maternal status of long-chain PUFAs (LC-PUFAs) may be related to fetal growth. Maternal fish consumption exposes the mother to the neurotoxicant methylmercury (MeHg), which, in contrast, may restrict fetal growth. OBJECTIVE Our aim was to examine relations between maternal LC-PUFA status at 28 wk and birth outcomes (birth weight, length, and head circumference), controlling for MeHg exposure throughout pregnancy, in the Seychelles Child Development Study Nutrition Cohort 2. Our secondary aim was to examine the influence of maternal variation in genes regulating the desaturation of LC-PUFAs [fatty acid desaturase (FADS)] on birth outcomes. METHODS From nonfasting blood samples collected at 28 wk of gestation, we measured serum total LC-PUFA concentrations and FADS1 (rs174537, rs174561), FADS1-FADS2rs3834458, and FADS2rs174575 genotypes, with hair total mercury concentrations assessed at delivery. Data were available for n = 1236 mother-child pairs. Associations of maternal LC-PUFAs, MeHg, and FADS genotype with birth outcomes were assessed by multiple linear regression models, adjusting for child sex, gestational age, maternal age, BMI, alcohol use, socioeconomic status, and parity. RESULTS In our cohort of healthy mothers, neither maternal LC-PUFA status nor MeHg exposure were significant determinants of birth outcomes. However, when compared with major allele homozygotes, mothers who were heterozygous for the minor allele of FADS1 (rs174537 and rs174561, GT compared with TT, β = 0.205, P = 0.03; TC compared with CC, β = 0.203, P = 0.04) and FADS1-FADS2 (rs3834458, Tdel compared with DelDel, β = 0.197, P = 0.04) had infants with a greater head circumference (all P < 0.05). Homozygosity for the minor allele of FADS2 (rs174575) was associated with a greater birth weight (GG compared with CC, β = 0.109, P = 0.04). CONCLUSIONS In our mother-child cohort, neither maternal LC-PUFA status nor MeHg exposure was associated with birth outcomes. The observed associations of variation in maternal FADS genotype with birth outcomes should be confirmed in other populations.
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Affiliation(s)
- Alison Jayne Yeates
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Alexis Zavez
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Sally W Thurston
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Emeir M McSorley
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Maria S Mulhern
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Ayman Alhamdow
- Unit of Metals and Health, Institute of Environmental Medicine, Metals and Health, Karolinska Institute, Stockholm, Sweden
| | - Karin Engström
- Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Karin Wahlberg
- Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - J J Strain
- Nutrition Innovation Centre for Food and Health (NICHE), Ulster University, Londonderry, United Kingdom
| | - Gene E Watson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Gary J Myers
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Philip W Davidson
- School of Medicine and Dentistry, University of Rochester, Rochester, NY, USA
| | - Conrad F Shamlaye
- Child Development Centre, Ministry of Health, Victoria, Mahé, Republic of Seychelles
| | - Karin Broberg
- Unit of Metals and Health, Institute of Environmental Medicine, Metals and Health, Karolinska Institute, Stockholm, Sweden.,Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
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5
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Alhamdow A, Essig YJ, Krais AM, Gustavsson P, Tinnerberg H, Lindh CH, Hagberg J, Graff P, Albin M, Broberg K. Fluorene exposure among PAH-exposed workers is associated with epigenetic markers related to lung cancer. Occup Environ Med 2020; 77:488-495. [PMID: 32385190 PMCID: PMC7306866 DOI: 10.1136/oemed-2020-106413] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 04/02/2020] [Accepted: 04/05/2020] [Indexed: 01/03/2023]
Abstract
Objectives Exposure to high-molecular-weight polycyclic aromatic hydrocarbons (PAHs) may cause cancer in chimney sweeps and creosote-exposed workers, however, knowledge about exposure to low-molecular-weight PAHs in relation to cancer risk is limited. In this study, we aimed to investigate occupational exposure to the low-molecular-weight PAHs phenanthrene and fluorene in relation to different cancer biomarkers. Methods We recruited 151 chimney sweeps, 19 creosote-exposed workers and 152 unexposed workers (controls), all men. We measured monohydroxylated metabolites of phenanthrene and fluorene in urine using liquid chromatography coupled to tandem mass spectrometry. We measured, in peripheral blood, the cancer biomarkers telomere length and mitochondrial DNA copy number using quantitative PCR; and DNA methylation of F2RL3 and AHRR using pyrosequencing. Results Median PAH metabolite concentrations were higher among chimney sweeps (up to 3 times) and creosote-exposed workers (up to 353 times), compared with controls (p<0.001; adjusted for age and smoking). ∑OH-fluorene (sum of 2-hydroxyfluorene and 3-hydroxyfluorene) showed inverse associations with percentage DNA methylation of F2RL3 and AHRR in chimney sweeps (B (95% CI)=–2.7 (–3.9 to –1.5) for F2RL3_cg03636183, and –7.1 (–9.6 to –4.7) for AHRR_cg05575921: adjusted for age and smoking), but not in creosote-exposed workers. In addition, ∑OH-fluorene showed a 42% mediation effect on the inverse association between being a chimney sweep and DNA methylation of AHRR CpG2. Conclusions Chimney sweeps and creosote-exposed workers were occupationally exposed to low-molecular-weight PAHs. Increasing fluorene exposure, among chimney sweeps, was associated with lower DNA methylation of F2RL3 and AHRR, markers for increased lung cancer risk. These findings warrant further investigation of fluorene exposure and toxicity.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Yona J Essig
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Annette M Krais
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Per Gustavsson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Region Stockholm, Centre for Occupational and Environmental Medicine, Stockholm, Sweden
| | - Håkan Tinnerberg
- School of Public Health and Community Medicine, Section of Occupational and Environmental Medicine, University of Gothenburg Sahlgrenska Academy, Göteborg, Sweden
| | - Christian H Lindh
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Jessika Hagberg
- MTM Research Centre, Örebro universitet Akademin för Naturvetenskap och Teknik, Orebro, Sweden.,Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Pål Graff
- Department of Chemical and Biological Work Environment, STAMI, Oslo, Norway
| | - Maria Albin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden.,Region Stockholm, Centre for Occupational and Environmental Medicine, Stockholm, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden .,Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
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Alhamdow A, Tinnerberg H, Lindh C, Albin M, Broberg K. Cancer-related proteins in serum are altered in workers occupationally exposed to polycyclic aromatic hydrocarbons: a cross-sectional study. Carcinogenesis 2020; 40:771-781. [PMID: 30753342 PMCID: PMC6612054 DOI: 10.1093/carcin/bgz022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 01/04/2019] [Accepted: 02/07/2019] [Indexed: 01/06/2023] Open
Abstract
Exposure to some polycyclic aromatic hydrocarbons (PAH) increases the risk of cancer and is common particularly for workers in occupations such as chimney sweeping. In exposed workers, screening of early cancer-related markers provides important information to identify individuals at risk. Here, we aimed to elucidate the associations between PAH exposure and serum levels of cancer-related proteins in 118 chimney sweeps and 126 occupationally unexposed controls, all non-smoking males from Sweden. Monoydroxylated metabolites of pyrene, phenanthrene, benzo[a]pyrene and benzo[a]anthracene were measured in urine using liquid chromatography coupled to tandem mass spectrometry and 90 cancer-related proteins were measured in serum using a proximity extension assay. Linear regression analysis adjusted for age and body mass index, and false discovery rate (FDR) identified 17 serum proteins that were differentially expressed (16 upregulated and 1 downregulated) in chimney sweeps compared with controls (FDR < 0.05). Concentrations of the peptidase kallikrein 13 (KLK13) showed significant positive associations with urinary concentrations of the PAH metabolites 3-hydroxybenzo[a]pyrene (3-OH-BaP) [B, 95% confidence interval (CI): 0.042, 0.008–0.076] and 3-hydroxybenzo[a]anthracene (3-OH-BaA) (B, 95% CI: 0.068, 0.002–0.134). Moreover, dose–response relationships were observed between KLK13 and 3-OH-BaP (trend test P = 0.027) and 3-OH-BaA (P = 0.035). Pathway and gene ontology analyses showed that cell movement, cell adhesion and cell migration were the predominant molecular functions associated with the top differentially expressed proteins. In conclusion, we found a number of putative cancer-related proteins differentially expressed in workers exposed to PAH. This warrants effective measure to reduce PAH exposure among workers as well as further investigation to confirm these findings.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Håkan Tinnerberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Maria Albin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.,Centre for Occupational and Environmental Medicine (CAMM), Stockholm County Council, Stockholm, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
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Wahlberg K, Liljedahl ER, Alhamdow A, Lindh C, Lidén C, Albin M, Tinnerberg H, Broberg K. Filaggrin variations are associated with PAH metabolites in urine and DNA alterations in blood. Environ Res 2019; 177:108600. [PMID: 31369996 DOI: 10.1016/j.envres.2019.108600] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Revised: 06/22/2019] [Accepted: 07/20/2019] [Indexed: 06/10/2023]
Abstract
Dermal chemical exposure is common in many professions. The filaggrin protein is important for the skin barrier and variations in the filaggrin gene (FLG) may influence the uptake of chemicals via the skin, and consequently, the degree of systemic effects. The aim of this study was to investigate, in chimney sweeps with occupational exposure to polycyclic aromatic hydrocarbons (PAH) from soot, the influence of variation in FLG on internal PAH dose and DNA alterations, including epigenetic, previously linked to cancer and cardiovascular disease. We used TaqMan PCR to genotype 151 chimney sweeps and 152 controls for four FLG null variants (R501X, R2447X, S3247X and 2282del4) which cause impaired skin barrier, and FLG copy number variation (12th repeat, CNV12) which potentially is beneficial for the skin barrier. The internal dose of PAH was represented by urinary PAH metabolites (e.g. 1-hydroxypyrene and 3-hydroxybenzo[a]pyrene) that we measured by LC-MS/MS. We measured epigenetic alterations (methylation of AHRR and F2RL3) in blood by pyrosequencing; and DNA alterations (telomere length and mitochondrial DNA copy number) by real-time PCR. Hypomethylation of AHRR or F2RL3 is a risk factor for lung cancer and shorter telomere length a risk factor for cardiovascular disease. The frequencies of FLG null were 8.6 and 11.8% (p = 0.35), and CNV12 27.8 and 19.7% (p = 0.09) in chimney sweeps and controls, respectively. We found that among chimney sweeps working predominately with soot sweeping (high PAH exposure), CNV12 carriers had lower concentrations of PAH metabolites in urine compared with non-carriers (median 1-hydroxypyrene = 0.37 vs 0.86 μg/g creatinine respectively; p = 0.025 by linear regression models adjusted for age, BMI and smoking) compared to sweeps not carrying CNV12. Further, FLG null was associated with approximately 2.5% higher methylation of F2RL3 (cg03636183, p = 0.019 after adjustment for exposure group, age, BMI and smoking). FLG null was associated with approximately 7% shorter telomere length (p = 0.015, adjusted model). Our results suggest that FLG variations may influence the dose of PAH in highly exposed workers, possibly via dermal uptake. It also suggests that FLG variation may influence the degree of (epi)genotoxicity in the body. FLG variation is common in the working population and should be considered in risk assessment.
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Affiliation(s)
- Karin Wahlberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Emelie Rietz Liljedahl
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Carola Lidén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maria Albin
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Håkan Tinnerberg
- Section of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
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Alhamdow A, Lindh C, Albin M, Gustavsson P, Tinnerberg H, Broberg K. Cardiovascular Disease-Related Serum Proteins in Workers Occupationally Exposed to Polycyclic Aromatic Hydrocarbons. Toxicol Sci 2019; 171:235-246. [PMID: 31228248 PMCID: PMC6735884 DOI: 10.1093/toxsci/kfz142] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 05/28/2019] [Accepted: 06/09/2019] [Indexed: 01/06/2023] Open
Abstract
Chimney sweeps have higher incidence and mortality of cardiovascular disease (CVD), likely related to their exposure to polycyclic aromatic hydrocarbons (PAH). In order to identify underlying mechanisms of PAH-related CVD, we here investigated whether PAH exposure was associated with levels of putative CVD-related proteins in serum among currently working chimney sweeps. We enrolled 116 chimney sweeps and 125 unexposed controls, all nonsmoking male workers from Sweden. We measured monohydroxylated PAH metabolites in urine by liquid chromatography coupled to tandem mass spectrometry and a panel of 85 proteins in serum using proximity extension assay. Linear regression analysis adjusted for age and body mass index showed that 25 proteins were differentially expressed between chimney sweeps and the controls (p < .05, adjusted for false discovery rate). Of the 25 proteins, follistatin (FS), prointerleukin-16 (IL-16), and heat shock protein beta-1 (HSP 27) showed positive associations with the monohydroxylated metabolites of PAH in a dose-response manner (p < .05). Pathway and gene ontology analyses demonstrated that the differentially expressed proteins were mainly involved in inflammatory response and immunological functions, such as leukocyte migration, cell movement of leukocytes, and adhesion of immune cells. In conclusion, we found a number of putative CVD-related proteins differentially expressed, between PAH-exposed and unexposed individuals, and mainly involved in inflammation and immune function. Our data warrant protective measures to reduce PAH exposure and longitudinal investigations of the protein profile in chimney sweeps and other occupational groups exposed to PAH.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund 223 63, Sweden
| | - Maria Albin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund 223 63, Sweden
- Centre for Occupational and Environmental Medicine (CAMM), Stockholm County Council, Stockholm 113 65, Sweden
| | - Per Gustavsson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
- Centre for Occupational and Environmental Medicine (CAMM), Stockholm County Council, Stockholm 113 65, Sweden
| | - Håkan Tinnerberg
- Section of Occupational and Environmental Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg 405 30, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm 171 77, Sweden
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund 223 63, Sweden
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9
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Alhamdow A, Lindh C, Hagberg J, Graff P, Westberg H, Krais AM, Albin M, Gustavsson P, Tinnerberg H, Broberg K. DNA methylation of the cancer-related genes F2RL3 and AHRR is associated with occupational exposure to polycyclic aromatic hydrocarbons. Carcinogenesis 2019; 39:869-878. [PMID: 29722794 PMCID: PMC6030939 DOI: 10.1093/carcin/bgy059] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 04/30/2018] [Indexed: 12/22/2022] Open
Abstract
Some polycyclic aromatic hydrocarbons (PAH) are known carcinogens and workplace PAH exposure may increase the risk of cancer. Monitoring early cancer-related changes can indicate whether the exposure is carcinogenic. Here, we enrolled 151 chimney sweeps, 152 controls and 19 creosote-exposed male workers from Sweden. We measured urinary PAH metabolites using LC/MS/MS, the cancer-related markers telomere length (TL) and mitochondrial DNA copy number (mtDNAcn) using qPCR, and DNA methylation of lung cancer-related genes F2RL3 and AHRR using pyrosequencing. The median 1-hydroxypyrene (PAH metabolite) concentrations were highest in creosote-exposed workers (8.0 μg/g creatinine) followed by chimney sweeps (0.34 μg/g creatinine) and controls (0.05 μg/g creatinine). TL and mtDNAcn did not differ between study groups. Chimney sweeps and creosote-exposed workers had significantly lower methylation of AHRR CpG site cg05575921 (88.1 and 84.9%, respectively) than controls (90%). Creosote-exposed workers (73.3%), but not chimney sweeps (76.6%) had lower methylation of F2RL3 cg03636183 than controls (76.7%). Linear regression analyses showed that chimney sweeps had lower AHRR cg05575921 methylation (B = -2.04; P < 0.057, adjusted for smoking and age) and lower average AHRR methylation (B = -2.05; P < 0.035), and non-smoking chimney sweeps had lower average F2RL3 methylation (B = -0.81; P < 0.042, adjusted for age) compared with controls. These cancer-related markers were not associated with urinary concentrations of PAH metabolites. In conclusion, although we found no associations with PAH metabolites in urine (short-term exposure), our results suggest dose-response relationship between PAH exposure and DNA hypomethylation of lung cancer-related loci. These findings indicate that further protective measures should be taken to reduce PAH exposure.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Jessika Hagberg
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro, Sweden.,Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Pål Graff
- Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden.,National Institute of Occupational Health, Oslo, Norway
| | - Håkan Westberg
- MTM Research Centre, School of Science and Technology, Örebro University, Örebro, Sweden.,Department of Occupational and Environmental Medicine, Faculty of Medicine and Health, Örebro University, Örebro, Sweden
| | - Annette M Krais
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Maria Albin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.,Centre for Occupational and Environmental Medicine (CAMM), Stockholm County Council, Stockholm, Sweden
| | - Per Gustavsson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Centre for Occupational and Environmental Medicine (CAMM), Stockholm County Council, Stockholm, Sweden
| | - Håkan Tinnerberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.,Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
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10
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Alhamdow A, Lindh C, Albin M, Gustavsson P, Tinnerberg H, Broberg K. 1454 Early markers of cardiovascular disease are associated with occupational exposure to polycyclic aromatic hydrocarbons. Occup Med (Lond) 2018. [DOI: 10.1136/oemed-2018-icohabstracts.1057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
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11
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Alhamdow A, Lindh C, Albin M, Gustavsson P, Tinnerberg H, Broberg K. Early markers of cardiovascular disease are associated with occupational exposure to polycyclic aromatic hydrocarbons. Sci Rep 2017; 7:9426. [PMID: 28842704 PMCID: PMC5573323 DOI: 10.1038/s41598-017-09956-x] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 08/01/2017] [Indexed: 01/27/2023] Open
Abstract
Occupational exposure to soot, rich in polycyclic aromatic hydrocarbons (PAH), has been associated with increased risk of cardiovascular disease (CVD). However, our knowledge about PAH exposure and early markers of CVD remains limited. In this cross-sectional study of 151 chimney sweeps and 152 controls, we investigated occupational exposure to PAH and early markers of CVD. Blood pressure (BP) (chimney sweeps only), urinary PAH metabolites and serum biomarkers were measured (C-reactive protein, homocysteine, gamma-glutamyltransferase, cholesterol, HDL, LDL, and triglycerides). Chimney sweeps had up to 7 times higher concentrations of PAH metabolites in urine than controls (P < 0.001): median concentrations (adjusted for specific gravity) for 1-hydroxypyrene, 2-hydroxyphenanthrene, 3-hydroxybenzo[a]pyrene, and 3-hydroxybenzo[a]anthracene were 0.56 µg/L, 0.78 µg/L, 4.75 ng/L, and 6.28 ng/L, respectively. Compared with controls, chimney sweeps had increased homocysteine, cholesterol, and HDL (β = 3.4 µmol/L, 0.43 mmol/L, and 0.13 mmol/L, respectively, P ≤ 0.003, adjusted for age, BMI, and smoking). In chimney sweeps, PAH metabolites correlated positively with the percentage of soot sweeping (P < 0.001). 2-hydroxyphenanthrene, 3-hydroxybenzo[a]pyrene, and 3-hydroxybenzo[a]anthracene were positively associated with diastolic BP (P < 0.044, adjusted for age, BMI, and smoking). PAH exposure among chimney sweeps resulted in elevated levels of markers for CVD risk. These findings stress the need to reduce occupational exposure to PAH.
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Affiliation(s)
- Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Christian Lindh
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Maria Albin
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Per Gustavsson
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Håkan Tinnerberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.
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12
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Llop S, Tran V, Ballester F, Barbone F, Sofianou-Katsoulis A, Sunyer J, Engström K, Alhamdow A, Love TM, Watson GE, Bustamante M, Murcia M, Iñiguez C, Shamlaye CF, Rosolen V, Mariuz M, Horvat M, Tratnik JS, Mazej D, van Wijngaarden E, Davidson PW, Myers GJ, Rand MD, Broberg K. CYP3A genes and the association between prenatal methylmercury exposure and neurodevelopment. Environ Int 2017; 105:34-42. [PMID: 28500872 PMCID: PMC5517297 DOI: 10.1016/j.envint.2017.04.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2016] [Revised: 04/26/2017] [Accepted: 04/26/2017] [Indexed: 05/31/2023]
Abstract
BACKGROUND Results on the association between prenatal exposure to methylmercury (MeHg) and child neuropsychological development are heterogeneous. Underlying genetic differences across study populations could contribute to this varied response to MeHg. Studies in Drosophila have identified the cytochrome p450 3A (CYP3A) family as candidate MeHg susceptibility genes. OBJECTIVES We evaluated whether genetic variation in CYP3A genes influences the association between prenatal exposure to MeHg and child neuropsychological development. METHODS The study population included 2639 children from three birth cohort studies: two subcohorts in Seychelles (SCDS) (n=1160, 20 and 30months of age, studied during the years 2001-2012), two subcohorts from Spain (INMA) (n=625, 14months of age, 2003-2009), and two subcohorts from Italy and Greece (PHIME) (n=854, 18months of age, 2006-2011). Total mercury, as a surrogate of MeHg, was analyzed in maternal hair and/or cord blood samples. Neuropsychological development was evaluated using Bayley Scales of Infant Development (BSID). Three functional polymorphisms in the CYP3A family were analyzed: rs2257401 (CYP3A7), rs776746 (CYP3A5), and rs2740574 (CYP3A4). RESULTS There was no association between CYP3A polymorphisms and cord mercury concentrations. The scores for the BSID mental scale improved with increasing cord blood mercury concentrations for carriers of the most active alleles (β[95% CI]:=2.9[1.53,4.27] for CYP3A7 rs2257401 GG+GC, 2.51[1.04,3.98] for CYP3A5 rs776746 AA+AG and 2.31[0.12,4.50] for CYP3A4 rs2740574 GG+AG). This association was near the null for CYP3A7 CC, CYP3A5 GG and CYP3A4 AA genotypes. The interaction between the CYP3A genes and total mercury was significant (p<0.05) in European cohorts only. CONCLUSIONS Our results suggest that the polymorphisms in CYP3A genes may modify the response to dietary MeHg exposure during early life development.
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Affiliation(s)
- Sabrina Llop
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
| | - Van Tran
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Ferran Ballester
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
| | - Fabio Barbone
- Department of Medical and Biological Sciences, University of Udine, via Colugna 50, 33100 Udine, Italy; Institute for Maternal and Child Health IRCCS "Burlo Garofolo", via dell'Istria 65/1, 34137 Trieste, Italy
| | | | - Jordi Sunyer
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Av. Aiguader 88, 08003 Barcelona, Spain; IMIM (Hospital del Mar Medical Research Institute), Av. Aiguader 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Av. Aiguader 88, 08003 Barcelona, Spain
| | - Karin Engström
- Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden
| | - Ayman Alhamdow
- Institute of Environmental Medicine, Karolinska Institutet, Nobels väg 13, 17177 Stockholm, Sweden
| | - Tanzy M Love
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Gene E Watson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Mariona Bustamante
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain; ISGlobal, Centre for Research in Environmental Epidemiology (CREAL), Av. Aiguader 88, 08003 Barcelona, Spain; IMIM (Hospital del Mar Medical Research Institute), Av. Aiguader 88, 08003 Barcelona, Spain; Genomics and Disease Group, Bioinformatics and Genomics Program, Centre for Genomic Regulation (CRG), Av. Aiguader 88, 08003 Barcelona, Spain
| | - Mario Murcia
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
| | - Carmen Iñiguez
- Epidemiology and Environmental Health Joint Research Unit, FISABIO-Universitat Jaume I-Universitat de València, Av. Catalunya 21, 46020 Valencia, Spain; Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Av. Monforte de Lemos, 3-5. Pabellón 11, 28029 Madrid, Spain
| | | | - Valentina Rosolen
- Department of Medical and Biological Sciences, University of Udine, via Colugna 50, 33100 Udine, Italy
| | - Marika Mariuz
- Department of Medical and Biological Sciences, University of Udine, via Colugna 50, 33100 Udine, Italy
| | - Milena Horvat
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova cesta 39, Si-1000 Ljubljana, Slovenia
| | - Janja S Tratnik
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova cesta 39, Si-1000 Ljubljana, Slovenia
| | - Darja Mazej
- Department of Environmental Sciences, Jozef Stefan Institute, Jamova cesta 39, Si-1000 Ljubljana, Slovenia
| | - Edwin van Wijngaarden
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Philip W Davidson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Gary J Myers
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Matthew D Rand
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Nobels väg 13, 17177 Stockholm, Sweden.
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13
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Alhamdow A, Gustavsson P, Rylander L, Jakobsson K, Tinnerberg H, Broberg K. Chimney sweeps in Sweden: a questionnaire-based assessment of long-term changes in work conditions, and current eye and airway symptoms. Int Arch Occup Environ Health 2016; 90:207-216. [PMID: 27858151 PMCID: PMC5263190 DOI: 10.1007/s00420-016-1186-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Accepted: 11/07/2016] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To explore chimney sweeping work tasks, chimney sweeps' use of protective equipment, and type of fuel used by clients, over time. Further, to assess work-relatedness of current eye and airway symptoms. METHODS In a cross-sectional study in 2011, male Swedish chimney sweeps (n = 483; age 21-69 years) answered a questionnaire about their occupational history and eye and airway symptoms. RESULTS Between 1960 and 2010, black-soot-sweeping in private homes was the major task, although it decreased during the time period, for chimney sweeps. Between 1975 and 2010, the use of petroleum oil decreased, whereas the use of pellets and wood increased. Also, the use of gloves and masks increased significantly. Black-soot-sweeping in industry was associated with work-related eye symptoms (prevalence odds ratio POR = 3.76, 95% CI: 1.72-8.24, for every 10% increment of working time, adjusted for age and tobacco smoking). Chimney sweeps also had slightly higher prevalence of cough with increasing black-soot-sweeping (POR = 1.06, 95% CI: 0.99-1.13 for every 10% increment, further adjusted for the use of mask), and the association was more pronounced, although nonsignificant, for black-soot-sweeping in industry (adjusted POR = 1.26, 95% CI: 0.98-1.61). CONCLUSIONS Chimney sweeping tasks and use of protective equipment as well as type of fuel used by the clients changed significantly over the last 35 years, which may have changed chimney sweeps' exposure to soot. Still, chimney sweeps in Sweden have black-soot-sweeping-related eye and airway symptoms.
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Affiliation(s)
- Ayman Alhamdow
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Nobels Väg 13, 171 77, Stockholm, Sweden.
| | - Per Gustavsson
- Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Nobels Väg 13, 171 77, Stockholm, Sweden
| | - Lars Rylander
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Kristina Jakobsson
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Håkan Tinnerberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden.,Unit of Metals and Health, Institute of Environmental Medicine, Karolinska Institutet, Nobels Väg 13, 171 77, Stockholm, Sweden
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14
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Engström K, Love TM, Watson GE, Zareba G, Yeates A, Wahlberg K, Alhamdow A, Thurston SW, Mulhern M, McSorley EM, Strain JJ, Davidson PW, Shamlaye CF, Myers GJ, Rand MD, van Wijngaarden E, Broberg K. Polymorphisms in ATP-binding cassette transporters associated with maternal methylmercury disposition and infant neurodevelopment in mother-infant pairs in the Seychelles Child Development Study. Environ Int 2016; 94:224-229. [PMID: 27262785 PMCID: PMC4980164 DOI: 10.1016/j.envint.2016.05.027] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Revised: 05/20/2016] [Accepted: 05/26/2016] [Indexed: 05/03/2023]
Abstract
BACKGROUND ATP-binding cassette (ABC) transporters have been associated with methylmercury (MeHg) toxicity in experimental animal models. AIMS To evaluate the association of single nucleotide polymorphisms (SNPs) in maternal ABC transporter genes with 1) maternal hair MeHg concentrations during pregnancy and 2) child neurodevelopmental outcomes. MATERIALS AND METHODS Nutrition Cohort 2 (NC2) is an observational mother-child cohort recruited in the Republic of Seychelles from 2008-2011. Total mercury (Hg) was measured in maternal hair growing during pregnancy as a biomarker for prenatal MeHg exposure (N=1313) (mean 3.9ppm). Infants completed developmental assessments by Bayley Scales of Infant Development II (BSID-II) at 20months of age (N=1331). Genotyping for fifteen SNPs in ABCC1, ABCC2 and ABCB1 was performed for the mothers. RESULTS Seven of fifteen ABC SNPs (ABCC1 rs11075290, rs212093, and rs215088; ABCC2 rs717620; ABCB1 rs10276499, rs1202169, and rs2032582) were associated with concentrations of maternal hair Hg (p<0.001 to 0.013). One SNP (ABCC1 rs11075290) was also significantly associated with neurodevelopment; children born to mothers with rs11075290 CC genotype (mean hair Hg 3.6ppm) scored on average 2 points lower on the Mental Development Index (MDI) and 3 points lower on the Psychomotor Development Index (PDI) than children born to mothers with TT genotype (mean hair Hg 4.7ppm) while children with the CT genotype (mean hair Hg 4.0ppm) had intermediate BSID scores. DISCUSSION Genetic variation in ABC transporter genes was associated with maternal hair Hg concentrations. The implications for MeHg dose in the developing child and neurodevelopmental outcomes need to be further investigated.
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Affiliation(s)
- Karin Engström
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden; Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden
| | - Tanzy M Love
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Gene E Watson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Grazyna Zareba
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Alison Yeates
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Karin Wahlberg
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden
| | - Ayman Alhamdow
- Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden
| | - Sally W Thurston
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Maria Mulhern
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Emeir M McSorley
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - J J Strain
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine Campus, Cromore Road, Coleraine, Co. Londonderry BT52 1SA, Northern Ireland, United Kingdom
| | - Philip W Davidson
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | | | - G J Myers
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Matthew D Rand
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Edwin van Wijngaarden
- University of Rochester Medical Center, School of Medicine and Dentistry, 601 Elmwood Ave, Box 671, Rochester, NY 14642, USA
| | - Karin Broberg
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, 22185 Lund, Sweden; Institute of Environmental Medicine (IMM), C6, Metals and Health, Box 210, 171 77 Stockholm, Sweden.
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15
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Li H, Åkerman G, Lidén C, Alhamdow A, Wojdacz TK, Broberg K, Albin M. Alterations of telomere length and DNA methylation in hairdressers: A cross-sectional study. Environ Mol Mutagen 2016; 57:159-167. [PMID: 26637967 DOI: 10.1002/em.21991] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 11/13/2015] [Indexed: 06/05/2023]
Abstract
Working as hairdressers has been associated with increased risk for cancer, particularly bladder cancer. To evaluate if current hairdressers have elevated risks of adverse health effects, we measured several biomarkers related to cancer-related DNA alterations. We enrolled 295 hairdressers and 92 non-hairdressers (all female non-smokers) from Stockholm and southern Sweden. Questionnaire data were collected for each participant, including work tasks for the hairdressers. We measured telomere length in peripheral blood leucocytes using quantitative PCR and DNA methylation status of genes relevant for bladder cancer using methylation sensitive high resolution melting analysis. The hairdressers had shorter telomeres (β = -0.069, P = 0.019) compared with non-hairdressers. Shorter telomeres were found in hairdressers up to 32 years old performing hair waving more than once per week as compared with hairdressers in the same age group performing hair waving less often (β = -0.12, P = 0.037). Hair waving was associated with less frequent CDKN2A methylation (odds ratio, OR = 0.19, P = 0.033). Shorter telomeres in hairdressers may indicate a genotoxic effect. Performing hair waving was associated with short telomere length, although the effect was only observed in young hairdressers. No clear patterns were discerned with regard to DNA methylation of bladder cancer-related genes. The observed changes of methylation were not all in the expected direction and warrant further investigation.
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Affiliation(s)
- Huiqi Li
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Gabriella Åkerman
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Carola Lidén
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Ayman Alhamdow
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Tomasz K Wojdacz
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Karin Broberg
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
| | - Maria Albin
- Department of Laboratory Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
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16
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Svensson CR, Ameer SS, Ludvigsson L, Ali N, Alhamdow A, Messing ME, Pagels J, Gudmundsson A, Bohgard M, Sanfins E, Kåredal M, Broberg K, Rissler J. Validation of an air-liquid interface toxicological set-up using Cu, Pd, and Ag well-characterized nanostructured aggregates and spheres. J Nanopart Res 2016; 18:86. [PMID: 27069401 PMCID: PMC4805710 DOI: 10.1007/s11051-016-3389-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2015] [Accepted: 03/03/2016] [Indexed: 05/22/2023]
Abstract
ABSTRACT Systems for studying the toxicity of metal aggregates on the airways are normally not suited for evaluating the effects of individual particle characteristics. This study validates a set-up for toxicological studies of metal aggregates using an air-liquid interface approach. The set-up used a spark discharge generator capable of generating aerosol metal aggregate particles and sintered near spheres. The set-up also contained an exposure chamber, The Nano Aerosol Chamber for In Vitro Toxicity (NACIVT). The system facilitates online characterization capabilities of mass mobility, mass concentration, and number size distribution to determine the exposure. By dilution, the desired exposure level was controlled. Primary and cancerous airway cells were exposed to copper (Cu), palladium (Pd), and silver (Ag) aggregates, 50-150 nm in median diameter. The aggregates were composed of primary particles <10 nm in diameter. For Cu and Pd, an exposure of sintered aerosol particles was also produced. The doses of the particles were expressed as particle numbers, masses, and surface areas. For the Cu, Pd, and Ag aerosol particles, a range of mass surface concentrations on the air-liquid interface of 0.4-10.7, 0.9-46.6, and 0.1-1.4 µg/cm2, respectively, were achieved. Viability was measured by WST-1 assay, cytokines (Il-6, Il-8, TNF-a, MCP) by Luminex technology. Statistically significant effects and dose response on cytokine expression were observed for SAEC cells after exposure to Cu, Pd, or Ag particles. Also, a positive dose response was observed for SAEC viability after Cu exposure. For A549 cells, statistically significant effects on viability were observed after exposure to Cu and Pd particles. The set-up produced a stable flow of aerosol particles with an exposure and dose expressed in terms of number, mass, and surface area. Exposure-related effects on the airway cellular models could be asserted.
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Affiliation(s)
- C. R. Svensson
- />Department of Design Sciences, Ergonomics and Aerosol Technology, Lund University, 221 00 Lund, Sweden
| | - S. S. Ameer
- />Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - L. Ludvigsson
- />Department of Physics, Solid State Physics, Lund University, 221 00 Lund, Sweden
| | - N. Ali
- />Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - A. Alhamdow
- />Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
- />Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - M. E. Messing
- />Department of Physics, Solid State Physics, Lund University, 221 00 Lund, Sweden
| | - J. Pagels
- />Department of Design Sciences, Ergonomics and Aerosol Technology, Lund University, 221 00 Lund, Sweden
| | - A. Gudmundsson
- />Department of Design Sciences, Ergonomics and Aerosol Technology, Lund University, 221 00 Lund, Sweden
| | - M. Bohgard
- />Department of Design Sciences, Ergonomics and Aerosol Technology, Lund University, 221 00 Lund, Sweden
| | - E. Sanfins
- />Institute of Emerging Diseases and Innovative Therapies (iMETI), Division of Prions and Related Diseases (SEPIA), Atomic Energy Commission (CEA), 18 Route du Panorama, 92265 Fontenay-aux-Roses, France
| | - M. Kåredal
- />Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
| | - K. Broberg
- />Division of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, 221 00 Lund, Sweden
- />Institute of Environmental Medicine, Karolinska Institutet, 171 77 Stockholm, Sweden
| | - J. Rissler
- />Department of Design Sciences, Ergonomics and Aerosol Technology, Lund University, 221 00 Lund, Sweden
- />Chemistry, Materials and Surfaces, SP Technical Research Institute of Sweden, 223 70 Lund, Sweden
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17
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Wahlberg K, Kippler M, Alhamdow A, Rahman SM, Smith DR, Vahter M, Lucchini RG, Broberg K. Common Polymorphisms in the Solute Carrier SLC30A10 are Associated With Blood Manganese and Neurological Function. Toxicol Sci 2015; 149:473-83. [PMID: 26628504 PMCID: PMC4725612 DOI: 10.1093/toxsci/kfv252] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Manganese (Mn) is an essential nutrient in humans, but excessive exposure to Mn may cause neurotoxicity. Despite homeostatic regulation, Mn concentrations in blood vary considerably among individuals. We evaluated if common single-nucleotide polymorphisms (SNPs) in SLC30A10, which likely encodes an Mn transporter, influence blood Mn concentrations and neurological function. We measured blood Mn concentrations by ICP-MS or atomic absorption spectroscopy and genotyped 2 SLC30A10 non-coding SNPs (rs2275707 and rs12064812) by TaqMan PCR in cohorts from Bangladesh (N = 406), the Argentinean Andes (N = 198), and Italy (N = 238). We also measured SLC30A10 expression in whole blood by TaqMan PCR in a sub-group (N = 101) from the Andean cohort, and neurological parameters (sway velocity and finger-tapping speed) in the Italian cohort. The rs2275707 variant allele was associated with increased Mn concentrations in the Andes (8%, P = .027) and Italy (10.6%, P = .012), but not as clear in Bangladesh (3.4%, P = .21; linear regression analysis adjusted for age, gender, and plasma ferritin). This allele was also associated with increased sway velocity (15%, P = .033; adjusted for age and sex) and reduced SLC30A10 expression (−24.6%, P = .029). In contrast, the rs12064812 variant homozygous genotype was associated with reduced Mn concentrations, particularly in the Italian cohort (−18.4%, P = .04), and increased finger-tapping speed (8.7%, P = .025). We show that common SNPs in SLC30A10 are associated with blood Mn concentrations in 3 unrelated cohorts and that their influence may be mediated by altered SLC30A10 expression. Moreover, the SNPs appeared to influence neurological functions independent of blood Mn concentrations, suggesting that SLC30A10 could regulate brain Mn levels.
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Affiliation(s)
- Karin Wahlberg
- *Division of Occupational and Environmental Medicine, Lund University, 221 85 Lund, Sweden;
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, 171 65 Solna, Sweden
| | - Ayman Alhamdow
- *Division of Occupational and Environmental Medicine, Lund University, 221 85 Lund, Sweden
| | - Syed Moshfiqur Rahman
- Institute of Environmental Medicine, Karolinska Institutet, 171 65 Solna, Sweden; International Centre for Diarrhoeal Disease Research, Bangladesh (icddr, b), Mohakhali, Dhaka 1000, Bangladesh
| | - Donald R Smith
- Microbiology and Environmental Toxicology, University of California, 1156 High Street, Santa Cruz, California 95064
| | - Marie Vahter
- *Division of Occupational and Environmental Medicine, Lund University, 221 85 Lund, Sweden
| | - Roberto G Lucchini
- Microbiology and Environmental Toxicology, University of California, 1156 High Street, Santa Cruz, California 95064; Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, New York 10029-5674; and Occupational Health Institute, University of Brescia, Viale Europa, 11, 25123 Brescia BS, Italy
| | - Karin Broberg
- *Division of Occupational and Environmental Medicine, Lund University, 221 85 Lund, Sweden; Institute of Environmental Medicine, Karolinska Institutet, 171 65 Solna, Sweden;
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Yeates AJ, Love TM, Engström K, Mulhern MS, McSorley EM, Grzesik K, Alhamdow A, Wahlberg K, Thurston SW, Davidson PW, van Wijngaarden E, Watson GE, Shamlaye CF, Myers GJ, Strain JJ, Broberg K. Genetic variation in FADS genes is associated with maternal long-chain PUFA status but not with cognitive development of infants in a high fish-eating observational study. Prostaglandins Leukot Essent Fatty Acids 2015; 102-103:13-20. [PMID: 26474818 PMCID: PMC4746501 DOI: 10.1016/j.plefa.2015.08.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 08/13/2015] [Accepted: 08/24/2015] [Indexed: 12/12/2022]
Abstract
Long-chain n-6 and n-3 PUFA (LC-PUFA), arachidonic acid (AA) (20:4n-6) and DHA (22:6n-3), are critical for optimal brain development. These fatty acids can be consumed directly from the diet, or synthesized endogenously from precursor PUFA by Δ-5 (encoded by FADS1) and Δ-6 desaturases (encoded by FADS2). The aim of this study was to determine the potential importance of maternal genetic variability in FADS1 and FADS2 genes to maternal LC-PUFA status and infant neurodevelopment in populations with high fish intakes. The Nutrition Cohorts 1 (NC1) and 2 (NC2) are longitudinal observational mother-child cohorts in the Republic of Seychelles. Maternal serum LC-PUFA was measured at 28 weeks gestation and genotyping for rs174537 (FADS1), rs174561 (FADS1), rs3834458 (FADS1-FADS2) and rs174575 (FADS2) was performed in both cohorts. The children completed the Bayley Scales of Infant Development II (BSID-II) at 30 months in NC1 and at 20 months in NC2. Complete data were available for 221 and 1310 mothers from NC1 and NC2 respectively. With increasing number of rs3834458 minor alleles, maternal concentrations of AA were significantly decreased (NC1 p=0.004; NC2 p<0.001) and precursor:product ratios for linoleic acid (LA) (18:2n-6)-to-AA (NC1 p<0.001; NC2 p<0.001) and α-linolenic acid (ALA) (18:3n-3)-to-DHA were increased (NC2 p=0.028). There were no significant associations between maternal FADS genotype and BSID-II scores in either cohort. A trend for improved PDI was found among infants born to mothers with the minor rs3834458 allele.In these high fish-eating cohorts, genetic variability in FADS genes was associated with maternal AA status measured in serum and a subtle association of the FADS genotype was found with neurodevelopment.
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Affiliation(s)
- Alison J Yeates
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Tanzy M Love
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | - Karin Engström
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Maria S Mulhern
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Emeir M McSorley
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Katherine Grzesik
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | - Ayman Alhamdow
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Karin Wahlberg
- The Laboratory of Medicine, Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Sally W Thurston
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | - Philip W Davidson
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | | | - Gene E Watson
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | | | - G J Myers
- The School of Medicine and Dentistry, University of Rochester, NY, United States
| | - J J Strain
- The Northern Ireland Centre for Food and Health (NICHE), School of Biomedical Sciences, University of Ulster, Coleraine, Northern Ireland, United Kingdom
| | - Karin Broberg
- The Institute of Environmental Medicine, Unit of Metals & Health, Karolinska Institutet, Stockholm, Sweden.
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Kuehnelt D, Engström K, Skröder H, Kokarnig S, Schlebusch C, Kippler M, Alhamdow A, Nermell B, Francesconi K, Broberg K, Vahter M. Selenium metabolism to the trimethylselenonium ion (TMSe) varies markedly because of polymorphisms in the indolethylamine N-methyltransferase gene. Am J Clin Nutr 2015; 102:1406-15. [PMID: 26537946 DOI: 10.3945/ajcn.115.114157] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Accepted: 09/16/2015] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Selenium is an essential element, but its metabolism in humans is not well characterized. A few small studies indicate that the trimethylselenonium ion (TMSe) is a common selenium metabolite in humans. OBJECTIVE This study aimed to elucidate the human metabolism of selenium to TMSe. DESIGN Study individuals constituted subsamples of 2 cohorts: 1) pregnant women (n = 228) and their 5-y-old children (n = 205) in rural Bangladesh with poor selenium status [median urinary selenium (U-Se): 6.4 μg/L in mothers, 14 μg/L in children] and 2) women in the Argentinian Andes (n = 83) with adequate selenium status (median U-Se: 24 μg/L). Total U-Se and blood selenium were measured by inductively coupled plasma mass spectrometry (ICPMS), and urinary concentrations of TMSe were measured by high-performance liquid chromatography/vapor generation/ICPMS. A genomewide association study (GWAS) was performed for 1,629,299 (after filtration) single nucleotide polymorphisms (SNPs) in the Bangladeshi women (n = 72) by using Illumina Omni5M, and results were validated by using real-time polymerase chain reaction. RESULTS TMSe "producers" were prevalent (approximately one-third) among the Bangladeshi women and their children, in whom TMSe constituted ∼10-70% of U-Se, whereas "nonproducers" had, on average, 0.59% TMSe. The TMSe-producing women had, on average, 2-μg U-Se/L higher concentrations than did the nonproducers. In contrast, only 3 of the 83 Andean women were TMSe producers (6-15% TMSe in the urine); the average percentage among the nonproducers was 0.35%. Comparison of the percentage of urinary TMSe in mothers and children indicated a strong genetic influence. The GWAS identified 3 SNPs in the indolethylamine N-methyltransferase gene (INMT) that were strongly associated with percentage of TMSe (P < 0.001, false-discovery rate corrected) in both cohorts. CONCLUSIONS There are remarkable population and individual variations in the formation of TMSe, which could largely be explained by SNPs in INMT. The TMSe-producing women had higher U-Se concentrations than did nonproducers, but further elucidation of the metabolic pathways of selenium is essential for the understanding of its role in human health. The MINIMat trial was registered at isrctn.org as ISRCTN16581394.
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Affiliation(s)
- Doris Kuehnelt
- Institute of Chemistry, Analytical Chemistry, NAWI Graz, University of Graz, Graz, Austria
| | - Karin Engström
- Section of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Helena Skröder
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
| | - Sabine Kokarnig
- Institute of Chemistry, Analytical Chemistry, NAWI Graz, University of Graz, Graz, Austria
| | - Carina Schlebusch
- Department of Evolutionary Biology, Evolutionary Biology Center, Uppsala University, Uppsala, Sweden
| | - Maria Kippler
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
| | - Ayman Alhamdow
- Section of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden
| | - Barbro Nermell
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
| | - Kevin Francesconi
- Institute of Chemistry, Analytical Chemistry, NAWI Graz, University of Graz, Graz, Austria
| | - Karin Broberg
- Section of Occupational and Environmental Medicine, Department of Laboratory Medicine, Lund University, Lund, Sweden; Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
| | - Marie Vahter
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; and
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20
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Llop S, Engström K, Ballester F, Franforte E, Alhamdow A, Pisa F, Tratnik JS, Mazej D, Murcia M, Rebagliato M, Bustamante M, Sunyer J, Sofianou-Katsoulis Α, Prasouli A, Antonopoulou E, Antoniadou I, Nakou S, Barbone F, Horvat M, Broberg K. Polymorphisms in ABC transporter genes and concentrations of mercury in newborns--evidence from two Mediterranean birth cohorts. PLoS One 2014; 9:e97172. [PMID: 24831289 PMCID: PMC4022503 DOI: 10.1371/journal.pone.0097172] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 04/16/2014] [Indexed: 11/19/2022] Open
Abstract
Background The genetic background may influence methylmercury (MeHg) metabolism and neurotoxicity. ATP binding cassette (ABC) transporters actively transport various xenobiotics across biological membranes. Objective To investigate the role of ABC polymorphisms as modifiers of prenatal exposure to MeHg. Methods The study population consisted of participants (n = 1651) in two birth cohorts, one in Italy and Greece (PHIME) and the other in Spain (INMA). Women were recruited during pregnancy in Italy and Spain, and during the perinatal period in Greece. Total mercury concentrations were measured in cord blood samples by atomic absorption spectrometry. Maternal fish intake during pregnancy was determined from questionnaires. Polymorphisms (n = 5) in the ABC genes ABCA1, ABCB1, ABCC1 and ABCC2 were analysed in both cohorts. Results ABCB1 rs2032582, ABCC1 rs11075290, and ABCC2 rs2273697 modified the associations between maternal fish intake and cord blood mercury concentrations. The overall interaction coefficient between rs2032582 and log2-transformed fish intake was negative for carriers of GT (β = −0.29, 95%CI −0.47, −0.12) and TT (β = −0.49, 95%CI −0.71, −0.26) versus GG, meaning that for a doubling in fish intake of the mothers, children with the rs2032582 GG genotype accumulated 35% more mercury than children with TT. For rs11075290, the interaction coefficient was negative for carriers of TC (β = −0.12, 95%CI −0.33, 0.09), and TT (β = −0.28, 95%CI −0.51, −0.06) versus CC. For rs2273697, the interaction coefficient was positive when combining GA+AA (β = 0.16, 95%CI 0.01, 0.32) versus GG. Conclusion The ABC transporters appear to play a role in accumulation of MeHg during early development.
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Affiliation(s)
- Sabrina Llop
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO, Valencia, Spain
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Karin Engström
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Ferran Ballester
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO, Valencia, Spain
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- School of Nursing, University of Valencia, Valencia, Spain
| | - Elisa Franforte
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Ayman Alhamdow
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
| | - Federica Pisa
- Unit of Hygiene and Epidemiology, University of Udine, Udine, Italy
| | - Janja Snoj Tratnik
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Datja Mazej
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Mario Murcia
- Foundation for the Promotion of Health and Biomedical Research in the Valencian Region, FISABIO, Valencia, Spain
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
| | - Marisa Rebagliato
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Medicine Department, Jaume I University, Castelló de la Plana, Spain
| | - Mariona Bustamante
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Hospital del Mar Research Institute (IMIM), Barcelona, Spain
- Center for Genomic Regulation (CRG), Barcelona, Spain
| | - Jordi Sunyer
- Spanish Consortium for Research on Epidemiology and Public Health (CIBERESP), Madrid, Spain
- Centre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain
- Hospital del Mar Research Institute (IMIM), Barcelona, Spain
- Pompeu Fabra University (UPF), Barcelona, Spain
| | | | - Alexia Prasouli
- Department of Social and Developmental Paediatrics Institute of Child Health, Athens, Greece
| | - Eleni Antonopoulou
- Department of Social and Developmental Paediatrics Institute of Child Health, Athens, Greece
| | - Ioanna Antoniadou
- Department of Social and Developmental Paediatrics Institute of Child Health, Athens, Greece
| | - Sheena Nakou
- Department of Social and Developmental Paediatrics Institute of Child Health, Athens, Greece
| | - Fabio Barbone
- Unit of Hygiene and Epidemiology, University of Udine, Udine, Italy
| | - Milena Horvat
- Department of Environmental Sciences, Jožef Stefan Institute, Ljubljana, Slovenia
| | - Karin Broberg
- Division of Occupational and Environmental Medicine, Lund University, Lund, Sweden
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden
- * E-mail:
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