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Bauer JA, Punshon T, Barr MN, Jackson BP, Weisskopf MG, Bidlack FB, Coker MO, Peacock JL, Karagas MR. Deciduous teeth from the New Hampshire birth cohort study: Early life environmental and dietary predictors of dentin elements. ENVIRONMENTAL RESEARCH 2024; 256:119170. [PMID: 38768888 DOI: 10.1016/j.envres.2024.119170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Revised: 05/13/2024] [Accepted: 05/16/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND Sparse research exists on predictors of element concentrations measured in deciduous teeth. OBJECTIVE To estimate associations between maternal/child characteristics, elements measured in home tap water during pregnancy and element concentrations in the dentin of shed deciduous teeth. METHODS Our analysis included 152 pregnant person-infant dyads followed from the second trimester through the end of the first postnatal year from the New Hampshire Birth Cohort Study. During pregnancy and early infancy, we collected dietary and sociodemographic information via surveys, measured elements in home tap water, and later collected naturally exfoliated teeth from child participants. We measured longitudinal deposition of elements in dentin using LA-ICP-MS. Multivariable linear mixed models were used to estimate associations between predictors and dentin element concentrations. RESULTS We measured 12 elements in dentin including those previously reported (Ba, Mn, Pb, Sr, Zn) and less frequently reported (Al, As, Cd, Cu, Hg, Li, and W). A doubling of Pb or Sr concentrations in water was associated with higher dentin Pb or Sr respectively in prenatally formed [9% (95%CI: 3%, 15%); 3% (1%, 6%)] and postnatally formed [10% (2%, 19%); 6% (2%, 10%)] dentin. Formula feeding from birth to 6 weeks or 6 weeks to 4 months was associated with higher element concentrations in postnatal dentin within the given time period as compared to exclusive human milk feeding: Sr: 6 weeks: 61% (36%, 90%) and 4 months: 85% (54%, 121%); Ba: 6 weeks: 35% (3.3%, 77%) and 4 months: 42% (10%, 83%); and Li: 6 weeks: 61% (33%, 95%) and 4 months: 58% (31%, 90%). SIGNIFICANCE These findings offer insights into predictors of dentin elements and potential confounders in exposure-health outcome relationships during critical developmental periods.
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Affiliation(s)
- Julia A Bauer
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA; Division of Epidemiology and Biostatistics, School of Public Health, University of Illinois Chicago, Chicago, IL, USA.
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Matthew N Barr
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Marc G Weisskopf
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | | | - Modupe O Coker
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA; Department of Oral Biology, School of Dental Medicine, Rutgers University, Newark, NJ, USA
| | - Janet L Peacock
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Hanover, NH, USA
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Yamagishi M, Takachi R, Ishihara J, Maruya S, Ishii Y, Kito K, Nakamura K, Tanaka J, Yamaji T, Iso H, Iwasaki M, Tsugane S, Sawada N. Development and preliminary validation of a prediction formula of sodium and sodium-to-potassium ratio based on multiple regression using 24-h urines. Sci Rep 2024; 14:9704. [PMID: 38678054 PMCID: PMC11055847 DOI: 10.1038/s41598-024-60349-3] [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] [Received: 08/11/2023] [Accepted: 04/22/2024] [Indexed: 04/29/2024] Open
Abstract
Accurate measurement of sodium intake in the diet is challenging, and epidemiological studies can be hampered by the attenuation of associations due to measurement error in sodium intake. A prediction formula for habitual 24-h urine sodium excretion and sodium-to-potassium ratio might lead to more reliable conclusions. Five 24-h urinary samples and two Food Frequency Questionnaires (FFQs) were conducted among 244 Japanese participants aged 35-80 years. We conducted multivariate linear regression analysis with urinary excretion as dependent variables and eating behaviour and food frequency as independent variables. Empirical weights of sodium excretion and sodium-to-potassium ratio were extracted. Preliminary validity was also assessed by randomly dividing the subjects into development and validation groups based on the correlation coefficient between estimates by the prediction formula and urinary excretion. Taste preference, soy sauce use at the table, frequency of pickled vegetables intake and number of bowls of miso soup were extracted as determinants of sodium excretion. Correlation coefficients between the estimates and urinary excretion for men and women were 0.42 and 0.43, respectively, for sodium and 0.49 and 0.50, respectively, for sodium-to-potassium ratio. This prediction formula may provide more accurate estimation of sodium intake and sodium-to-potassium ratio than the food composition approach.
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Affiliation(s)
- Marina Yamagishi
- Department of Food Science and Nutrition, Nara Women's University Graduate School of Humanities and Sciences, Kitauoyahigashimachi, Nara-shi, Nara, 630-8506, Japan
| | - Ribeka Takachi
- Department of Food Science and Nutrition, Nara Women's University Graduate School of Humanities and Sciences, Kitauoyahigashimachi, Nara-shi, Nara, 630-8506, Japan.
| | - Junko Ishihara
- Graduate School of Environmental Health, Azabu University, 1-17-71 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa, 252-5201, Japan
| | - Sachiko Maruya
- Department of Food Science and Nutrition, Nara Women's University Graduate School of Humanities and Sciences, Kitauoyahigashimachi, Nara-shi, Nara, 630-8506, Japan
| | - Yuri Ishii
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Kumiko Kito
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Kazutoshi Nakamura
- Division of Preventive Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachidori, Niigata, 951-8510, Japan
| | - Junta Tanaka
- Department of Health Promotion Medicine, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachidori, Niigata, 951-8510, Japan
| | - Taiki Yamaji
- Division of Epidemiology, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Hiroyasu Iso
- National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku-ku, Tokyo, 162-8655, Japan
| | - Motoki Iwasaki
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
- Division of Epidemiology, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
| | - Shoichiro Tsugane
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
- International University of Health and Welfare Graduate School of Public Health, 4-1-26 Akasaka, Minato-ku, Tokyo, 107-8402, Japan
| | - Norie Sawada
- Division of Cohort Research, National Cancer Center Institute for Cancer Control, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan
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Rachamalla M, Salahinejad A, Kodzhahinchev V, Niyogi S. Reproductive and Developmental Effects of Sex-Specific Chronic Exposure to Dietary Arsenic in Zebrafish ( Danio rerio). TOXICS 2024; 12:302. [PMID: 38668525 PMCID: PMC11053724 DOI: 10.3390/toxics12040302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Revised: 04/16/2024] [Accepted: 04/17/2024] [Indexed: 04/29/2024]
Abstract
The present study investigated the reproductive and developmental effects of sex-specific chronic exposure to dietary arsenic in zebrafish. Adult zebrafish (Danio rerio) were exposed to environmentally realistic doses of arsenic via diet [0 (control; no added arsenic), 30 (low), 60 (medium), and 100 (high) μg/g dry weight, as arsenite] for 90 days. Following exposure, arsenic-exposed females from each dietary treatment were mated with control males, and similarly, arsenic-exposed males from each dietary treatment were mated with control females. In females, arsenic exposure resulted in a dose-dependent decrease in reproductive performance (fecundity, fertilization success, and hatching success). Moreover, a dose-dependent increase in developmental toxicity (larval deformities and larval mortality) was observed with maternal exposure to arsenic. In contrast, in males, arsenic exposure also induced similar reproductive and developmental toxicity; however, the adverse effects were mainly evident only in the medium and high dietary arsenic treatment groups. We also examined the sex-specific effects of dietary arsenic exposure on the expression of genes that regulate the hypothalamus-pituitary-gonadal-liver (HPG-L) axis in fish. The gene expression results indicated the downregulation of HPG-L axis genes in females irrespective of the arsenic treatment dose; however, the reduced expression of HPG-L axis genes in males was recorded only in the medium and high arsenic treatment groups. These observations suggest that chronic arsenic exposure in either females or males causes reproductive and developmental toxicity in zebrafish. However, these toxic effects are markedly higher in females than in males. Our results also suggest that arsenic can act as an endocrine disruptor and mediate reproductive and developmental toxicity by disrupting the HPG-L axis in zebrafish.
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Affiliation(s)
- Mahesh Rachamalla
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada; (A.S.); (V.K.); (S.N.)
| | - Arash Salahinejad
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada; (A.S.); (V.K.); (S.N.)
| | - Vladimir Kodzhahinchev
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada; (A.S.); (V.K.); (S.N.)
| | - Som Niyogi
- Department of Biology, University of Saskatchewan, Saskatoon, SK S7N 5E2, Canada; (A.S.); (V.K.); (S.N.)
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK S7N 5B3, Canada
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Punshon T, Bauer JA, Karagas MR, Coker MO, Weisskopf MG, Mangano JJ, Bidlack FB, Barr MN, Jackson BP. Quantified retrospective biomonitoring of fetal and infant elemental exposure using LA-ICP-MS analysis of deciduous dentin in three contrasting human cohorts. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024:10.1038/s41370-024-00652-3. [PMID: 38347123 DOI: 10.1038/s41370-024-00652-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 01/29/2024] [Accepted: 01/30/2024] [Indexed: 02/18/2024]
Abstract
BACKGROUND Spatial elemental analysis of deciduous tooth dentin combined with odontochronological estimates can provide an early life (in utero to ~2 years of age) history of inorganic element exposure and status. OBJECTIVE To demonstrate the importance of data normalization to a certified reference material to enable between-study comparisons, using populations with assumed contrasting elemental exposures. METHODS We used laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) of dentin to derive a history of elemental composition from three distinct cohort studies: a present day rural cohort, (the New Hampshire Birth Cohort Study (NHBCS; N = 154)), an historical cohort from an urban area (1958-1970), (the St. Louis Baby Tooth Study (SLBT; N = 78)), and a present-day Nigerian cohort established to study maternal HIV transmission (Dental caries and its association with Oral Microbiomes and HIV in young children-Nigeria (DOMHaIN; N = 31)). RESULTS We report Li, Al, Mn, Cu, Zn, Sr, Ba and Pb concentrations (µg/g) and qualitatively examine As, Cd and Hg across all three cohorts. Rates of detection were highest, both overall and for each cohort individually, for Zn, Sr, Ba and Li. Zinc was detected in 100% of samples and was stably present in teeth at a concentration range of 64 - 86 µg/g. Mercury, As and Cd detection rates were the lowest, and had high variability within individual ablated spots. We found the highest concentrations of Pb in the pre- and postnatal dentin of the SLBT cohort, consistent with the prevalent use of Pb as an additive to gasoline prior to 1975. The characteristic decline in Mn after the second trimester was observed in all cohorts. IMPACT Spatially resolved elemental analysis of deciduous teeth combined with methods for estimating crown formation times can be used to reconstruct an early-life history of elemental exposure inaccessible via other biomarkers. Quantification of data into absolute values using an external standard reference material has not been conducted since 2012, preventing comparison between studies, a common and highly informative component of epidemiology. We demonstrate, with three contrasting populations, that absolute quantification produces data with the lowest variability, compares well with available data and recommends that future tooth biomarker studies report data in this way.
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Affiliation(s)
- T Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH, 03755, USA.
| | - Julia A Bauer
- Department of Epidemiology, Geisel School of Medicine, Hanover, NH, 03755, USA
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Hanover, NH, 03755, USA
| | - Modupe O Coker
- Department of Epidemiology, Geisel School of Medicine, Hanover, NH, 03755, USA
- Department of Oral Biology, Rutgers School of Dental Medicine, Rutgers University, 110 Bergen Street, Room C-845, Newark, NJ, 07103, USA
| | - Marc G Weisskopf
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 665 Huntington Ave, Boston, MA, 021156, USA
| | | | | | - Matthew N Barr
- Department of Earth Sciences, Dartmouth College, Hanover, NH, 03755, USA
| | - Brian P Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, 03755, USA
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Signes-Pastor AJ, Gutiérrez-González E, García-Villarino M, Rodríguez-Cabrera FD, López-Moreno JJ, Varea-Jiménez E, Pastor-Barriuso R, Pollán M, Navas-Acien A, Pérez-Gómez B, Karagas MR. Toenails as a biomarker of exposure to arsenic: A review. ENVIRONMENTAL RESEARCH 2021; 195:110286. [PMID: 33075355 PMCID: PMC7987585 DOI: 10.1016/j.envres.2020.110286] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 09/26/2020] [Accepted: 09/27/2020] [Indexed: 05/04/2023]
Abstract
This systematic review summarizes the current evidence related to the reliability of toenail total arsenic concentrations (thereafter "arsenic") as a biomarker of long-term exposure. Specifically, we reviewed literature on consistency of repeated measures over time, association with other biomarkers and metal concentrations, factors influencing concentrations, and associations with health effects. We identified 129 papers containing quantitative original data on arsenic in toenail samples covering populations from 29 different countries. We observed geographic differences in toenail arsenic concentrations, with highest median or mean concentrations in Asian countries. Arsenic-contaminated drinking water, occupational exposure or living in specific industrial areas were associated with an increased toenail arsenic content. The effects of other potential determinants and sources of arsenic exposure including diet, gender and age on the concentrations in toenails need further investigations. Toenail arsenic was correlated with the concentrations in hair and fingernails, and with urine arsenic mainly among highly exposed populations with a toenail mean or median ≥1 μg/g. Overall, there is a growing body of evidence suggesting that arsenic content from a single toenail sample may reflect long-term internal dose-exposure. Toenail arsenic can serve as a reliable measure of toxic inorganic arsenic exposure in chronic disease research, particularly promising for cancer and cardiovascular conditions.
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Affiliation(s)
- Antonio J Signes-Pastor
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, 1 Medical Center Dr, Williamson Translational Research Bldg, Lebanon NH, 03756, USA.
| | - Enrique Gutiérrez-González
- Spanish Agency of Food Safety and Nutrition, Ministry of Consumer Affairs, Alcalá, 56, 28014, Madrid, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain
| | - Miguel García-Villarino
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Unit of Molecular Cancer Epidemiology, University Institute of Oncology of the Principality of Asturias (IUOPA) - Department of Medicine, University of Oviedo, Julian Clavería Street s/n, 33006, Oviedo, Asturias, Spain
| | - Francisco D Rodríguez-Cabrera
- Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain
| | - Jorge J López-Moreno
- Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain
| | - Elena Varea-Jiménez
- Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Roberto Pastor-Barriuso
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Marina Pollán
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
| | - Beatriz Pérez-Gómez
- Consortium for Biomedical Research in Epidemiology & Public Health (CIBER en Epidemiología y Salud Pública - CIBERESP), Monforte de Lemos 5, 28029, Madrid, Spain; Public Health Teaching Unit, National School of Public Health, Carlos III Institute of Health, Monforte de Lemos 5, 28029. Madrid, Spain; Department of Epidemiology of Chronic Diseases, National Centre for Epidemiology, Carlos III Institute of Health, Monforte de Lemos 5, 28029, Madrid, Spain
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, 1 Medical Center Dr, Williamson Translational Research Bldg, Lebanon NH, 03756, USA
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Fano-Sizgorich D, Vásquez-Velásquez C, Yucra S, Vásquez V, Tokeshi P, Aguilar J, Ramírez-Atencio C, Barr DB, Gonzales GF. Total Urinary Arsenic and Inorganic Arsenic Concentrations and Birth Outcomes in Pregnant Women of Tacna, Peru: A Cross-Sectional Study. EXPOSURE AND HEALTH 2021; 13:133-140. [PMID: 33575507 PMCID: PMC7870591 DOI: 10.1007/s12403-020-00377-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Inorganic arsenic exposure has been linked to the development of several health conditions, including adverse birth outcomes; and around 150 million of people worldwide are exposed to levels above the WHO suggested limit of 10 μg/L. A recent risk assessment in pregnant women of Tacna, of this same population performed by our group, found that 70.25% were exposed to arsenic concentrations in drinking water ≥25 μg/L. The present study aimed to evaluate the relationship between prenatal total urinary arsenic (U-tAs) and inorganic arsenic (U-iAs) with adverse birth outcomes. A total of 147 pregnant women from the province of Tacna, Peru, during February - March, 2019, were evaluated for U-tAs and U-iAs exposure during their second trimester of pregnancy, while the birth records of their children were collected from the local hospital. The geometric mean U-tAs was 43.97 ± 25.88 μg/L (P50 22.30, range 5.99 - 181.94 μg/L) and U-iAs was 5.27 ± 2.91 μg/L. Controlling for maternal age, pre-pregnancy BMI, parity, mother's education and newborn sex, no relationship was observed between tertile of U-tAs and the birth outcomes considered, although we found an apparent but statistically non-significant dose-response relationship for small-for-gestational-age 2.38% ( 95% CI 0.003, 0.16), versus 7.32% (95% CI 0.02, 0.21%), versus 8.57% (0.03, 0.25%). This finding requires further evaluation considering other factors such as metabolic arsenic species, additional maternal covariates and ethnicity.
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Affiliation(s)
- Diego Fano-Sizgorich
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
| | - Cinthya Vásquez-Velásquez
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
| | - Sandra Yucra
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
| | - Vanessa Vásquez
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
| | - Patricio Tokeshi
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
| | - Julio Aguilar
- Universidad Nacional Jorge Basadre Grohmann, Tacna, Peru
| | | | - Dana Boyd Barr
- Gangarosa Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA 30322, USA
| | - Gustavo F Gonzales
- Laboratory of Endocrinology and Reproduction, Universidad Peruana Cayetano Heredia, Lima, Lima 31, Peru
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Yang K, Chen C, Brockman J, Shikany JM, He K. Low- and moderate- levels of arsenic exposure in young adulthood and incidence of chronic kidney disease: Findings from the CARDIA Trace Element Study. J Trace Elem Med Biol 2021; 63:126657. [PMID: 33069098 PMCID: PMC7722195 DOI: 10.1016/j.jtemb.2020.126657] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/23/2020] [Indexed: 01/29/2023]
Abstract
BACKGROUND It is unclear whether arsenic exerts adverse health effects on the kidney at low- and moderate- levels of exposure. We prospectively examined toenail arsenic concentrations measured during young adulthood in relation to incidence of chronic kidney disease (CKD) in midlife. METHODS A total of 3768 participants (53 % female and 48 % blacks) in the Coronary Artery Risk Development in Young Adults (CARDIA) study were included. Arsenic concentration in toenail clippings was assessed by using inductively coupled plasma mass spectrometry at CARDIA exam year 2. Incident CKD was identified if having estimated glomerular filtration rate <60 mL/min per 1.73 m² or albuminuria >30 mg/g. The association between toenail arsenic levels and CKD incidence over a mean of 24 years of follow-up was examined using multivariable-adjusted Cox proportional hazards models. RESULTS After controlling for potential confounders, including demographics, socioeconomics, lifestyle factors, clinical measurements of blood pressure, lipids, and glucose, and medical history, arsenic exposure measured in toenails was not associated with CKD incidence (quintile 5 versus quintile 1: hazard ratio = 1.04, 95 % confidence interval = 0.78-1.40, P for trend = 0.38). CONCLUSION This longitudinal study does not support the hypothesis that low- and moderate- levels of arsenic exposure are associated with elevated incidence of CKD in the US general population. Further studies are need to investigate species of arsenic biomarkers in relation to nephrotoxicity.
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Affiliation(s)
- Kefeng Yang
- Department of Nutrition, Xin Hua Hospital Affiliated to School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Cheng Chen
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - John Brockman
- Columbia Research Reactor, University of Missouri, Columbia, MO, USA
| | - James M Shikany
- Division of Preventive Medicine, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Ka He
- Department of Obstetrics and Gynecology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA; Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA.
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8
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Fleming DEB, Crook SL, Evans CT, Nader MN, Atia M, Hicks JMT, Sweeney E, McFarlane CR, Kim JS, Keltie E, Adisesh A. Assessing arsenic in human toenail clippings using portable X-ray fluorescence. Appl Radiat Isot 2020; 167:109491. [PMID: 33121893 DOI: 10.1016/j.apradiso.2020.109491] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 07/20/2020] [Accepted: 10/21/2020] [Indexed: 11/19/2022]
Abstract
Arsenic is a toxic metalloid which has been associated with a wide range of health effects in humans including skin abnormalities and an elevated risk of skin, bladder, kidney, and lung cancer, diabetes, and cardiovascular disease. The measurement of arsenic concentration in nail clippings is often used in population studies as an indicator of arsenic exposure. Portable X-ray fluorescence (XRF) is an emerging technique for measuring arsenic in nail clippings. In the current study, single toenail clippings from 60 Atlantic Canadian participants were assessed for arsenic using a new portable XRF approach. A mono-energetic portable XRF system using doubly curved crystal optics was used to measure each clipping for a total of 900 s. Energy spectra from each clipping were analyzed for arsenic characteristic X-rays to provide a normalized arsenic signal. The same clippings were then analyzed for arsenic concentration using a "gold standard" method of inductively coupled plasma mass spectrometry (ICP-MS). Nail clipping arsenic concentrations measured by ICP-MS ranged from 0.030 μg/g to 2.57 μg/g, with a median result of 0.14 μg/g. Portable XRF results for arsenic were compared against ICP-MS arsenic concentrations, with a linear equation of best fit determined between the two variables. A correlation coefficient of r = 0.77 was found from the 59 nail clippings returning an ICP-MS arsenic concentration above the limit of quantitation. When the comparison was limited to the 20 clippings having an XRF normalized signal at least twice as large as the associated uncertainty of measurement, the correlation coefficient was r = 0.89. With the selection of an arsenic concentration of 0.1 μg/g as a cut-off value between "exposed" and "non-exposed" individuals, the XRF method provided a test sensitivity of 76% and a specificity of 81%. The corresponding positive predictive value was 88% and the negative predictive value was 65%. The portable XRF technique used in this study shows promise as a means of assessing arsenic concentration in toenail clippings.
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Affiliation(s)
- David E B Fleming
- Physics Department, Mount Allison University, Sackville, New Brunswick, Canada.
| | - Samantha L Crook
- Physics Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Colby T Evans
- Physics Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Michel N Nader
- Physics Department, Mount Allison University, Sackville, New Brunswick, Canada
| | - Manuel Atia
- Medical Sciences, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Jason M T Hicks
- Atlantic PATH, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Ellen Sweeney
- Atlantic PATH, Dalhousie University, Halifax, Nova Scotia, Canada
| | | | - Jong Sung Kim
- Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Erin Keltie
- Community Health and Epidemiology, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Anil Adisesh
- Atlantic PATH, Dalhousie University, Halifax, Nova Scotia, Canada; Department of Medicine, Division of Occupational Medicine, University of Toronto, Toronto, Ontario, Canada; Faculty of Business, University of New Brunswick, Saint John, New Brunswick, Canada
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Rasheed H, Kay P, Slack R, Gong YY. Assessment of arsenic species in human hair, toenail and urine and their association with water and staple food. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2019; 29:624-632. [PMID: 30262833 DOI: 10.1038/s41370-018-0056-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/11/2017] [Revised: 02/13/2018] [Accepted: 06/14/2018] [Indexed: 06/08/2023]
Abstract
Arsenic intake from household drinking/cooking water and food may represent a significant exposure pathway to induce cancer and non-cancer health effects. This study is based on the human biomonitoring of 395 volunteers from 223 households with private water sources located in rural Punjab, Pakistan. This work has shown the relative contribution of water and staple food to arsenic intake and accumulation by multiple biological matrix measurements of inorganic and organic arsenic species, while accounting for potential confounders such as age, gender, occupation, and exposure duration of the study population. Multi-variable linear regression showed a strong significant relationship between total arsenic (tAs) intake from water and concentrations of tAs, inorganic arsenic (iAs), monomethylarsonic acid (MMA), dimethylarsinic acid (DMA) in urine and toenail samples. tAs intake from staple food (rice and wheat) also showed a strong significant relationship with hair tAs and iAs. The sole impact of staple food intake on biomarkers was assessed and a significant correlation was found with all of the urinary arsenic metabolites. Toenail was found to be the most valuable biomarker of past exposure to inorganic and organic arsenic species of dietary and metabolic origin.
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Affiliation(s)
- Hifza Rasheed
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK.
| | - Paul Kay
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Rebecca Slack
- School of Geography, University of Leeds, Leeds, LS2 9JT, UK
| | - Yun Yun Gong
- School of Food Science and Nutrition, University of Leeds, Leeds, LS2 9JT, UK
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10
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Tanabe CK, Nelson J, Ebeler SE. Current Perspective on Arsenic in Wines: Analysis, Speciation, and Changes in Composition during Production. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:4154-4159. [PMID: 30896158 DOI: 10.1021/acs.jafc.9b00634] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Arsenic, a naturally occurring metalloid found in certain foods, exists in various redox states and as inorganic and organic species, each with varying levels of toxicity. International regulatory bodies have imposed allowable maximums for total arsenic in wine ranging between 100 and 200 μg/L. Typical commercial wine levels are within these limits. However, a better understanding of viticultural and enological practices impacting total arsenic and arsenic species in grapes and wines is needed to ensure levels remain low. This perspective discusses current information on factors impacting the arsenic content of grapes and wines and the analytical approaches for monitoring inorganic and organic species.
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Affiliation(s)
- Courtney K Tanabe
- Department of Viticulture and Technology , University of California , Davis , California 95616 , United States
- Food Safety and Measurement Facility , University of California , Davis , California 95616 , United States
| | - Jenny Nelson
- Department of Viticulture and Technology , University of California , Davis , California 95616 , United States
- Food Safety and Measurement Facility , University of California , Davis , California 95616 , United States
- Agilent Technologies, Inc. , Santa Clara , California 95051 , United States
| | - Susan E Ebeler
- Department of Viticulture and Technology , University of California , Davis , California 95616 , United States
- Food Safety and Measurement Facility , University of California , Davis , California 95616 , United States
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11
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Jones MR, Tellez-Plaza M, Vaidya D, Grau-Perez M, Post WS, Kaufman JD, Guallar E, Francesconi KA, Goessler W, Nachman KE, Sanchez TR, Navas-Acien A. Ethnic, geographic and dietary differences in arsenic exposure in the multi-ethnic study of atherosclerosis (MESA). JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2019; 29:310-322. [PMID: 29795237 PMCID: PMC6252166 DOI: 10.1038/s41370-018-0042-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 10/03/2017] [Accepted: 01/27/2018] [Indexed: 05/18/2023]
Abstract
Differences in residential location as well as race/ethnicity and dietary habits may result in differences in inorganic arsenic (iAs) exposure. We investigated the association of exposure to iAs with race/ethnicity, geography, and dietary intake in a random sample of 310 White, Black, Hispanic, and Chinese adults in the Multi-Ethnic Study of Atherosclerosis from 6 US cities with inorganic and methylated arsenic (ΣAs) measured in urine. Dietary intake was assessed by food-frequency questionnaire. Chinese and Hispanic race/ethnicity was associated with 82% (95% CI: 46%, 126%) and 37% (95% CI: 10%, 70%) higher urine arsenic concentrations, respectively, compared to White participants. No differences were observed for Black participants compared to Whites. Urine arsenic concentrations were higher for participants in Los Angeles, Chicago, and New York compared to other sites. Participants that ate rice ≥2 times/week had 31% higher urine arsenic compared to those that rarely/never consumed rice. Participants that drank wine ≥2 times/week had 23% higher urine arsenic compared to rare/never wine drinkers. Intake of poultry or non-rice grains was not associated with urinary arsenic concentrations. At the low-moderate levels typical of the US population, exposure to iAs differed by race/ethnicity, geographic location, and frequency of rice and wine intake.
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Affiliation(s)
- Miranda R Jones
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA.
- Department of Oncology, Johns Hopkins School of Medicine, Baltimore, MD, USA.
| | - Maria Tellez-Plaza
- Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Institute for Biomedical Research Hospital Clinico de Valencia-INCLIVA, Valencia, Spain
| | - Dhananjay Vaidya
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - Maria Grau-Perez
- Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Columbia University, New York, NY, USA
| | - Wendy S Post
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - Joel D Kaufman
- Department of Environmental and Occupational Health Sciences,School of Public Health, University of Washington, Seattle, WA, USA
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Medicine, Johns Hopkins School of Medicine, Baltimore, MD, USA
- Welch Center for Prevention, Epidemiology and Clinical Research, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | | | | | - Keeve E Nachman
- Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Tiffany R Sanchez
- Department of Environmental Health Sciences, Columbia University, New York, NY, USA
| | - Ana Navas-Acien
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Columbia University, New York, NY, USA
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12
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Yang K, Xun P, Carnethon M, Carson AP, Lu L, Zhu J, He K. Low to moderate toenail arsenic levels in young adulthood and incidence of diabetes later in life: findings from the CARDIA Trace Element study. ENVIRONMENTAL RESEARCH 2019; 171:321-327. [PMID: 30711733 PMCID: PMC6398992 DOI: 10.1016/j.envres.2019.01.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 01/20/2019] [Accepted: 01/24/2019] [Indexed: 05/09/2023]
Abstract
Some studies suggest a positive association between arsenic exposure and risk of diabetes. However, the findings are inconsistent and inconclusive, particularly at a low to moderate arsenic exposure level, and longitudinal data are lacking. We examined toenail arsenic at low to moderate level in young adulthood in relation to incidence of diabetes later in life. This study included 4102 black and white participants aged 20-32 at baseline (1987-88) who completed up to 7 follow-up exams through 2015-16. Toenail arsenic was measured by collision-cell inductively-coupled-plasma mass-spectrometry. Incident diabetes was defined as fasting glucose ≥ 126 mg/dL, non-fasting glucose ≥ 200 mg/dL, 2-h postchallenge glucose ≥ 200 mg/dL, hemoglobin A1c ≥ 6.5%, or use of glucose-lowering medications. Cox proportional hazards model and generalized estimating equations (GEEs) were used to determine the associations of quintiles of toenail arsenic with incident diabetes and other metabolic parameters. The median (inter-quartile range) toenail arsenic level was 0.097 (0.065-0.150) ppm in this study. During the follow-up period, 599 incident cases of diabetes were identified. After adjustment for potential confounders, the hazards ratio (95% confidence interval) was 0.96 (0.73, 1.27) (P for linear trend= 0.85) comparing the highest to the lowest quintile of toenail arsenic levels. No significant association was observed between toenail arsenic and levels of fasting glucose, insulin, homeostatic model assessment of insulin resistance, homeostatic model assessment of beta cell function, or C-reactive protein. The null associations persisted across subgroups of age, sex, race, and body mass index. Findings from this longitudinal study do not support the hypothesis that low to moderate toenail arsenic levels in young adulthood is associated with diabetes risk later in life.
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Affiliation(s)
- Kefeng Yang
- Department of Clinical Nutrition, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Pengcheng Xun
- Department of Epidemiology and Biostatistics, School of Public Health-Bloomington, Indiana University, 1025 E. 7th Street, Bloomington, IN 47405, USA
| | - Mercedes Carnethon
- Department of Preventive Medicine, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - April P Carson
- Department of Epidemiology, School of Public Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Liping Lu
- Department of Clinical Nutrition, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jie Zhu
- Department of Clinical Nutrition, Xin Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China; Department of Nutrition, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ka He
- Department of Epidemiology and Biostatistics, School of Public Health-Bloomington, Indiana University, 1025 E. 7th Street, Bloomington, IN 47405, USA.
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13
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Lin PID, Bromage S, Mostofa MG, Rahman M, Allen J, Oken E, Kile ML, Christiani DC. Mediating role of arsenic in the relationship between diet and pregnancy outcomes: prospective birth cohort in Bangladesh. Environ Health 2019; 18:10. [PMID: 30728020 PMCID: PMC6364468 DOI: 10.1186/s12940-019-0450-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2018] [Accepted: 01/31/2019] [Indexed: 05/29/2023]
Abstract
BACKGROUND Epidemiological evidence suggests that arsenic (As) exposure during pregnancy may reduce infant birth weight. One significant source of As exposure is diet; thus, As may indirectly affect infant growth by mediating the effect of maternal diet on birth weight (BW). This study evaluated the potential mediating effect of As in the relationship between maternal diet and BW, gestational age (GA), and gestational weight gain (GWG). METHOD The study used a prospective birth cohort in Bangladesh that captured the dietary habits of 1057 pregnant women through validated semi-quantitative food frequency questionnaires. We applied a causal mediation model with counterfactual approach and performed analyses with and without adjustment for total energy intake. Other potential confounders captured by self-report questionnaire were exposure to secondhand tobacco smoke, betel nut chewing, maternal age, education level, household income level, physical activity level during pregnancy, and daily hours spent cooking over open fire. RESULT No association was found between maternal toenail As and BW. Higher absolute and energy-adjusted protein, fat and fiber intakes were associated with higher toenail As and lower GA and GWG, while higher absolute and energy-adjusted carbohydrate intake was associated with lower toenail As and greater GA and GWG. Mediation analysis showed significant natural indirect effects by toenail As in the relationships between absolute fat, carbohydrate and fiber intake with GA. Specifically, 3% (95% CI: 1-6%) of the association between carbohydrate intake and GA was mediated by change in toenail As, 6% (95% CI: 1-9%) for absolute fat intake and 10% (95% CI: 4-13%) for absolute fiber intake. After adjusting for total energy, no significant mediating effect was observed, suggesting the mediating effect might be due to measurement error or that absolute amount of As exposure rather than the amount in relationship to total energy intake was a more important factor to consider when understanding the negative implication of As on fetal growth. CONCLUSION The mediating effect of As in the relationship between maternal diet and birth outcome was small and might be due to measurement error.
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Affiliation(s)
- Pi-I D. Lin
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, 401 Park Drive, Suite 401 East, Boston, MA 02215 USA
- Research Center for Environmental Medicine, Kaohsiung Medical University, No. 100 Shiquan 1st Road, Sanmin District, Kaohsiung City, Taiwan 807 Taiwan
| | - Sabri Bromage
- Department of Nutrition, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
| | - Md. Golam Mostofa
- Department of Environmental Research, Dhaka Community Hospital, 190/1 Wireless Railgate Bara Moghbazar, Dhaka, 1217 Bangladesh
| | - Mohammad Rahman
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
| | - Joseph Allen
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, 401 Park Drive, Suite 401 East, Boston, MA 02215 USA
| | - Molly L. Kile
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
- College of Public Health and Human Science, Oregon State University, 160 SW 26th St, Corvallis, OR 97331 USA
| | - David C. Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Boston, MA 02115 USA
- Research Center for Environmental Medicine, Kaohsiung Medical University, No. 100 Shiquan 1st Road, Sanmin District, Kaohsiung City, Taiwan 807 Taiwan
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14
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Moon KA, Oberoi S, Barchowsky A, Chen Y, Guallar E, Nachman KE, Rahman M, Sohel N, D’Ippoliti D, Wade TJ, James KA, Farzan SF, Karagas MR, Ahsan H, Navas-Acien A. A dose-response meta-analysis of chronic arsenic exposure and incident cardiovascular disease. Int J Epidemiol 2017; 46:1924-1939. [PMID: 29040626 PMCID: PMC5837344 DOI: 10.1093/ije/dyx202] [Citation(s) in RCA: 98] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 08/17/2017] [Accepted: 08/30/2017] [Indexed: 01/08/2023] Open
Abstract
Background Consistent evidence at high levels of water arsenic (≥100 µg/l), and growing evidence at low-moderate levels (<100 µg/l), support a link with cardiovascular disease (CVD). The shape of the dose-response across low-moderate and high levels of arsenic in drinking water is uncertain and critical for risk assessment. Methods We conducted a systematic review of general population epidemiological studies of arsenic and incident clinical CVD (all CVD, coronary heart disease (CHD) and stroke) with three or more exposure categories. In a dose-response meta-analysis, we estimated the pooled association between log-transformed water arsenic (log-linear) and restricted cubic splines of log-transformed water arsenic (non-linear) and the relative risk of each CVD endpoint. Results Twelve studies (pooled N = 408 945) conducted at high (N = 7) and low-moderate (N = 5) levels of water arsenic met inclusion criteria, and 11 studies were included in the meta-analysis. Compared with 10 µg/l, the estimated pooled relative risks [95% confidence interval (CI)] for 20 µg/l water arsenic, based on a log-linear model, were 1.09 (1.03, 1.14) (N = 2) for CVD incidence, 1.07 (1.01, 1.14) (N = 6) for CVD mortality, 1.11 (1.05, 1.17) (N = 4) for CHD incidence, 1.16 (1.07, 1.26) (N = 6) for CHD mortality, 1.08 (0.99, 1.17) (N = 2) for stroke incidence and 1.06 (0.93, 1.20) (N = 6) for stroke mortality. We found no evidence of non-linearity, although these tests had low statistical power. Conclusions Although limited by the small number of studies, this analysis supports quantitatively including CVD in inorganic arsenic risk assessment, and strengthens the evidence for an association between arsenic and CVD across low-moderate to high levels.
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Affiliation(s)
- Katherine A Moon
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Shilpi Oberoi
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Aaron Barchowsky
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, PA, USA
| | - Yu Chen
- Departments of Population Health and Environmental Medicine, New York University School of Medicine, New York, NY, USA
| | - Eliseo Guallar
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - Keeve E Nachman
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | | | - Nazmul Sohel
- Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada
| | | | - Timothy J Wade
- United States Environmental Protection Agency, Office of Research and Development, Chapel Hill, NC, USA
| | - Katherine A James
- Department of Family Medicine, University of Colorado, Denver, CO, USA
| | - Shohreh F Farzan
- Department of Preventive Medicine, University of Southern California, Los Angeles, CA, USA
| | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, USA
| | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Ana Navas-Acien
- Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, NY, USA
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15
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Nunes LM, Otero X. Quantification of health risks in Ecuadorian population due to dietary ingestion of arsenic in rice. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:27457-27468. [PMID: 28980169 DOI: 10.1007/s11356-017-0265-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 09/19/2017] [Indexed: 06/07/2023]
Abstract
In Ecuador alone, 500,000 people in rural areas are estimated to have been exposed to high concentrations of As from water and food, but no quantitative evaluation of health risk has yet been made. The present study quantifies exposure and health risk for the Ecuadorian population from the ingestion of arsenic in white rice. Estimated exposure is correlated with published data on tap water quality and biomarkers of exposure for the population of two towns in the metropolitan area of Quito. Estimated daily intake (EDI) of arsenic for infants living in urban areas of Ecuador is around four times that of European infants, being equal for those livings in rural areas. EDI for the population as a whole is almost twice that of Europe, but between a half and a third of that of Brazil, Bangladesh, and India. Estimated excess lifetime risk (ELTR) for adults is 3 per 10,000, while for infants varies between 10 per 10,000 in rural areas and 20 per 10,000 in urban areas. Future research on arsenic impacts on human health in Ecuador should consider in particular poor populations living in regions where environmental arsenic concentrations are highest, including cross-sectional and longitudinal epidemiologic studies.
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Affiliation(s)
- Luís Miguel Nunes
- Faculdade de Ciências e Tecnologia, Universidade do Algarve, Campus de Gambelas, Faro, Portugal.
- Civil Engineering Research and Innovation for Sustainability, Instituto Superior Técnico, Lisbon, Portugal.
| | - Xosé Otero
- Departamento de Edafoloxía e Química Agrícola, Facultade de Bioloxía, Universidade de Santiago de Compostela, Campus Sur, 15782, Santiago de Compostela, Spain
- Departamento de Ciencia de los Alimentos y Biotecnología, Escuela Politécnica Nacional, Quito, Ecuador
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16
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Farzan SF, Brickley EB, Li Z, Gilbert-Diamond D, Gossai A, Chen Y, Howe CG, Palys T, Karagas MR. Maternal and infant inflammatory markers in relation to prenatal arsenic exposure in a U.S. pregnancy cohort. ENVIRONMENTAL RESEARCH 2017; 156:426-433. [PMID: 28410520 PMCID: PMC5477637 DOI: 10.1016/j.envres.2017.03.056] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/27/2017] [Accepted: 03/30/2017] [Indexed: 05/21/2023]
Abstract
INTRODUCTION Accumulating evidence indicates that arsenic (As), a potent environmental toxicant, may increase cardiovascular disease risk and adversely affect endothelial function at high levels of exposure. Pregnancy is a vulnerable time for both mother and child; however, studies examining the association between prenatal As exposure and plasma biomarkers of inflammation and endothelial function in mothers and newborns are lacking. METHODS We examined maternal urinary As levels at gestational weeks 24-28 and levels of inflammatory biomarkers in plasma from 563 pregnant women and 500 infants' cord blood. We assessed a multiplexed panel of circulating inflammatory and endothelial function markers, including tumor necrosis factor alpha (TNFα), monocyte chemoattractant protein 1 (MCP1), intercellular adhesion molecule (ICAM1) and vascular cell adhesion molecule (VCAM1). RESULTS Compared with the bottom tertile, the highest tertile of maternal urinary As during pregnancy was associated with a 145.2ng/ml (95% CI 4.1, 286.3; p=0.04) increase in cord blood ICAM1 and 557.3ng/ml (95% CI -56.4, 1171.1; p=0.09) increase in cord blood VCAM1. Among mothers, the highest tertile of maternal urinary As during pregnancy was related to a 141.8ng/ml (95% CI 26.1, 257.5; p=0.02) increase maternal plasma VCAM1 levels. Urinary As was unrelated to MCP1 or TNFα in maternal plasma and cord blood. In structural equation models, the association between maternal urinary As and infant VCAM was mediated by maternal levels of VCAM (βmediation: 0.024, 95% CI: 0.002, 0.050). CONCLUSION Our observations indicate that As exposure during pregnancy may affect markers of vascular health and endothelial function in both pregnant women and children, and suggest further investigation of the potential impacts on cardiovascular health in these susceptible populations.
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Affiliation(s)
- Shohreh F Farzan
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA.
| | - Elizabeth B Brickley
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Zhigang Li
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Diane Gilbert-Diamond
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Anala Gossai
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Yu Chen
- Department of Population Health, New York University School of Medicine, New York, NY, USA
| | - Caitlin G Howe
- Department of Preventive Medicine, Keck School of Medicine of University of Southern California, Los Angeles, CA, USA
| | - Thomas Palys
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
| | - Margaret R Karagas
- Children's Environmental Health & Disease Prevention Research Center at Dartmouth, Hanover, NH, USA and Department of Epidemiology, Geisel School of Medicine at Dartmouth, Lebanon, NH, USA
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17
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Cord blood T cell subpopulations and associations with maternal cadmium and arsenic exposures. PLoS One 2017; 12:e0179606. [PMID: 28662050 PMCID: PMC5491028 DOI: 10.1371/journal.pone.0179606] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 05/31/2017] [Indexed: 11/19/2022] Open
Abstract
Background Arsenic and cadmium are environmental pollutants, and although the evidence for adverse immune effects after prenatal arsenic and cadmium exposures is increasing, little is known about the underlying immunological mechanisms. Methods We investigated the relationship between prenatal arsenic and cadmium exposures and a variety of T cell subpopulations measured in cord blood for 63 participants in the New Hampshire Birth Cohort Study. Post-partum toenail concentrations of arsenic and cadmium were used as an estimate of maternal exposure during pregnancy. The characteristics of cord blood proportions of T lymphocytes and subpopulations (expression of markers for Th1, Th2, Th17, Th1Th17, induced and natural regulatory T cells and NKTs) are presented. Results In regression analyses, maternal arsenic exposure levels were inversely associated with cord blood T helper memory cells (-21%, 95% CI: -36%, -3%) and the association was found to be stronger in females. They were also inversely associated with activated T helper memory cells, particularly in males (-26%, 95% CI: -43%, -3%). Similarly, inverse associations were observed between cadmium exposure levels and activated T helper memory cells (-16%, 95% CI: -30%, -1%) and also for T helper memory cells in females (-20%, 95% CI: -35%, -3%). Conclusion The results suggest that prenatal exposures to relatively low levels of arsenic and cadmium may contribute to altered distribution of T cell populations at birth. These changes in theory, could have contributed to the previously reported immunosuppressive effects observed later in infancy/childhood.
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18
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Davis MA, Signes-Pastor AJ, Argos M, Slaughter F, Pendergrast C, Punshon T, Gossai A, Ahsan H, Karagas MR. Assessment of human dietary exposure to arsenic through rice. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 586:1237-1244. [PMID: 28233618 PMCID: PMC5502079 DOI: 10.1016/j.scitotenv.2017.02.119] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Revised: 02/14/2017] [Accepted: 02/14/2017] [Indexed: 05/19/2023]
Abstract
Rice accumulates 10-fold higher inorganic arsenic (i-As), an established human carcinogen, than other grains. This review summarizes epidemiologic studies that examined the association between rice consumption and biomarkers of arsenic exposure. After reviewing the literature we identified 20 studies, among them included 18 observational and 2 human experimental studies that reported on associations between rice consumption and an arsenic biomarker. Among individuals not exposed to contaminated water, rice is a source of i-As exposure - rice consumption has been consistently related to arsenic biomarkers, and the relationship has been clearly demonstrated in experimental studies. Early-life i-As exposure is of particular concern due to its association with lifelong adverse health outcomes. Maternal rice consumption during pregnancy also has been associated with infant toenail total arsenic concentrations indicating that dietary exposure during pregnancy results in fetal exposure. Thus, the collective evidence indicates that rice is an independent source of arsenic exposure in populations around the world and highlights the importance of investigating its affect on health.
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Affiliation(s)
- Matthew A Davis
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States; University of Michigan School of Nursing, Ann Arbor, MI, United States; University of Michigan Institute for Social Research, Ann Arbor, MI, United States
| | - Antonio J Signes-Pastor
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Maria Argos
- University of Illinois at Chicago School of Public Health, Chicago, IL, United States
| | - Francis Slaughter
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Claire Pendergrast
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Tracy Punshon
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | - Anala Gossai
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States
| | | | - Margaret R Karagas
- Department of Epidemiology, Geisel School of Medicine at Dartmouth, Hanover, NH, United States.
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Lin PID, Bromage S, Mostofa MG, Allen J, Oken E, Kile ML, Christiani DC. Associations between Diet and Toenail Arsenic Concentration among Pregnant Women in Bangladesh: A Prospective Study. Nutrients 2017; 9:nu9040420. [PMID: 28441747 PMCID: PMC5409759 DOI: 10.3390/nu9040420] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 04/18/2017] [Accepted: 04/20/2017] [Indexed: 12/27/2022] Open
Abstract
This prospective study evaluated the relationship between long-term dietary habits and total arsenic (As) concentration in toenail clippings in a cohort of 1616 pregnant women in the Bangladeshi administrative regions of Sirajdikhan and Pabna Sadar. Diet was assessed at Gestation Week 28 and at Postpartum Month 1, using a locally-validated dish-based semi-quantitative food-frequency questionnaire. Toenail As concentration was analyzed by microwave-assisted acid digestion and inductively coupled plasma mass spectrometry. Associations between natural log-transformed consumption of individual food items and temporally matched natural log-transformed toenail As concentration were quantified using general linear models that accounted for As concentration in the primary drinking water source and other potential confounders. The analysis was stratified by As in drinking water (≤50 μg/L versus >50 μg/L) and the time of dietary assessment (Gestation Week 28 versus Postpartum Week 1). Interestingly, toenail As was not significantly associated with consumption of plain rice as hypothesized. However, toenail As was positively associated with consumption of several vegetable, fish and meat items and was negatively associated with consumption of rice, cereal, fruits, and milk based food items. Further studies in pregnant women are needed to compare As metabolism at different levels of As exposure and the interaction between dietary composition and As absorption.
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Affiliation(s)
- Pi-I D Lin
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80709, Taiwan.
| | - Sabri Bromage
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - Md Golam Mostofa
- Department of Environmental Research, Dhaka Community Hospital, Dhaka 1217, Bangladesh.
| | - Joseph Allen
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - Emily Oken
- Department of Population Medicine, Harvard Medical School and Harvard Pilgrim Health Care Institute, Boston, MA 02115, USA.
| | - Molly L Kile
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
| | - David C Christiani
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA 02113, USA.
- Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung 80709, Taiwan.
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20
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Taylor V, Goodale B, Raab A, Schwerdtle T, Reimer K, Conklin S, Karagas MR, Francesconi KA. Human exposure to organic arsenic species from seafood. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 580:266-282. [PMID: 28024743 PMCID: PMC5326596 DOI: 10.1016/j.scitotenv.2016.12.113] [Citation(s) in RCA: 290] [Impact Index Per Article: 41.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 12/13/2016] [Accepted: 12/16/2016] [Indexed: 05/18/2023]
Abstract
Seafood, including finfish, shellfish, and seaweed, is the largest contributor to arsenic (As) exposure in many human populations. In contrast to the predominance of inorganic As in water and many terrestrial foods, As in marine-derived foods is present primarily in the form of organic compounds. To date, human exposure and toxicological assessments have focused on inorganic As, while organic As has generally been considered to be non-toxic. However, the high concentrations of organic As in seafood, as well as the often complex As speciation, can lead to complications in assessing As exposure from diet. In this report, we evaluate the presence and distribution of organic As species in seafood, and combined with consumption data, address the current capabilities and needs for determining human exposure to these compounds. The analytical approaches and shortcomings for assessing these compounds are reviewed, with a focus on the best practices for characterization and quantitation. Metabolic pathways and toxicology of two important classes of organic arsenicals, arsenolipids and arsenosugars, are examined, as well as individual variability in absorption of these compounds. Although determining health outcomes or assessing a need for regulatory policies for organic As exposure is premature, the extensive consumption of seafood globally, along with the preliminary toxicological profiles of these compounds and their confounding effect on assessing exposure to inorganic As, suggests further investigations and process-level studies on organic As are needed to fill the current gaps in knowledge.
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Affiliation(s)
| | | | | | | | - Ken Reimer
- Royal Military College, Kingston, Ontario, Canada
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21
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Mayer JE, Goldman RH. Arsenic and skin cancer in the USA: the current evidence regarding arsenic-contaminated drinking water. Int J Dermatol 2016; 55:e585-e591. [DOI: 10.1111/ijd.13318] [Citation(s) in RCA: 67] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2015] [Revised: 11/29/2015] [Accepted: 02/03/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Jonathan E. Mayer
- Department of Medicine; Johns Hopkins Bayview Medical Center, The Johns Hopkins University School of Medicine; Baltimore MD USA
| | - Rose H. Goldman
- Department of Environmental Health; Harvard T.H. Chan School of Public Health; Boston MA USA
- Department of Medicine; Harvard Medical School; Boston MA USA
- Department of Medicine; Cambridge Health Alliance; Cambridge MA USA
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22
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Park SM, Li T, Wu S, Li WQ, Qureshi AA, Cho E. Vitamin D Intake and Risk of Skin Cancer in US Women and Men. PLoS One 2016; 11:e0160308. [PMID: 27557122 PMCID: PMC4996491 DOI: 10.1371/journal.pone.0160308] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2015] [Accepted: 07/18/2016] [Indexed: 12/22/2022] Open
Abstract
Previous studies suggested a protective effect of vitamin D against skin cancer development. However, epidemiologic studies on orally taken vitamin D and risk of skin cancer (basal cell carcinoma [BCC], squamous cell carcinoma [SCC], and melanoma) are few. We prospectively evaluated whether total, dietary and supplemental vitamin D intake were associated with skin cancer risk based on 63,760 women in the Nurses' Health Study (1984–2010) and 41,530 men in the Health Professionals Follow-up Study (1986–2010). Dietary information on vitamin D intake was assessed every 2 to 4 years during the follow-up and cumulative averaged intake was used. We used Cox proportional hazard models to compute the hazard ratios (HR) and 95% confidence intervals (CI). Pooled HR of cohort-specific results were calculated using a random-effects model. During the follow-up, we documented 20,840 BCC, 2,329 SCC and 1,320 melanoma cases. Vitamin D consumption was not associated with the risk of SCC or melanoma but was modestly positively associated with BCC; the pooled HRs of BCC for extreme quintiles of vitamin D intake were 1.10 (95%CI = 1.05–1.15; Ptrend = 0.05) for total vitamin D and 1.13 (95% CI = 1.07 to 1.20; Ptrend <0.01) for dietary vitamin D. Stratified analysis according to sun exposure related factors showed similar results. In conclusion, vitamin D intake was positively associated with risk of BCC, while null associations were found with SCC and melanoma. Our data do not support a beneficial role of orally taken vitamin D on skin cancer carcinogenesis.
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Affiliation(s)
- Sang Min Park
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States of America
- Department of Family Medicine & Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Korea
| | - Tricia Li
- Department of Dermatology, The Warren Alpert Medical School, Brown University, Providence, RI, United States of America
| | - Shaowei Wu
- Department of Dermatology, The Warren Alpert Medical School, Brown University, Providence, RI, United States of America
| | - Wen-Qing Li
- Department of Dermatology, The Warren Alpert Medical School, Brown University, Providence, RI, United States of America
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, United States of America
| | - Abrar A. Qureshi
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States of America
- Department of Dermatology, The Warren Alpert Medical School, Brown University, Providence, RI, United States of America
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, United States of America
| | - Eunyoung Cho
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA, United States of America
- Department of Dermatology, The Warren Alpert Medical School, Brown University, Providence, RI, United States of America
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, United States of America
- * E-mail:
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23
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Hudgens EE, Drobna Z, He B, Le XC, Styblo M, Rogers J, Thomas DJ. Biological and behavioral factors modify urinary arsenic metabolic profiles in a U.S. population. Environ Health 2016; 15:62. [PMID: 27230915 PMCID: PMC4880853 DOI: 10.1186/s12940-016-0144-x] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 05/16/2016] [Indexed: 05/19/2023]
Abstract
BACKGROUND Because some adverse health effects associated with chronic arsenic exposure may be mediated by methylated arsenicals, interindividual variation in capacity to convert inorganic arsenic into mono- and di-methylated metabolites may be an important determinant of risk associated with exposure to this metalloid. Hence, identifying biological and behavioral factors that modify an individual's capacity to methylate inorganic arsenic could provide insights into critical dose-response relations underlying adverse health effects. METHODS A total of 904 older adults (≥45 years old) in Churchill County, Nevada, who chronically used home tap water supplies containing up to 1850 μg of arsenic per liter provided urine and toenail samples for determination of total and speciated arsenic levels. Effects of biological factors (gender, age, body mass index) and behavioral factors (smoking, recent fish or shellfish consumption) on patterns of arsenicals in urine were evaluated with bivariate analyses and multivariate regression models. RESULTS Relative contributions of inorganic, mono-, and di-methylated arsenic to total speciated arsenic in urine were unchanged over the range of concentrations of arsenic in home tap water supplies used by study participants. Gender predicted both absolute and relative amounts of arsenicals in urine. Age predicted levels of inorganic arsenic in urine and body mass index predicted relative levels of mono- and di-methylated arsenic in urine. Smoking predicted both absolute and relative levels of arsenicals in urine. Multivariate regression models were developed for both absolute and relative levels of arsenicals in urine. Concentration of arsenic in home tap water and estimated water consumption were strongly predictive of levels of arsenicals in urine as were smoking, body mass index, and gender. Relative contributions of arsenicals to urinary arsenic were not consistently predicted by concentrations of arsenic in drinking water supplies but were more consistently predicted by gender, body mass index, age, and smoking. CONCLUSIONS These findings suggest that analyses of dose-response relations in arsenic-exposed populations should account for biological and behavioral factors that modify levels of inorganic and methylated arsenicals in urine. Evidence of significant effects of these factors on arsenic metabolism may also support mode of action studies in appropriate experimental models.
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Affiliation(s)
- Edward E Hudgens
- Environmental Public Health Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27709, USA
| | - Zuzana Drobna
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - Bin He
- Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - X C Le
- Analytical and Environmental Toxicology, Department of Laboratory Medicine and Pathology, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2G3, Canada
| | - Miroslav Styblo
- Department of Nutrition, University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599, USA
| | - John Rogers
- Westat, 1600 Research Boulevard, Rockville, MD, 20850, USA
| | - David J Thomas
- Integrated Systems Toxicology Division, National Health and Environmental Effects Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency, Research Triangle Park, NC, 27709, USA.
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Middleton DRS, Watts MJ, Hamilton EM, Fletcher T, Leonardi GS, Close RM, Exley KS, Crabbe H, Polya DA. Prolonged exposure to arsenic in UK private water supplies: toenail, hair and drinking water concentrations. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2016; 18:562-74. [PMID: 27120003 DOI: 10.1039/c6em00072j] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Chronic exposure to arsenic (As) in drinking water is an established cause of cancer and other adverse health effects. Arsenic concentrations >10 μg L(-1) were previously measured in 5% of private water supplies (PWS) in Cornwall, UK. The present study investigated prolongued exposure to As by measuring biomarkers in hair and toenail samples from 212 volunteers and repeated measurements of As in drinking water from 127 households served by PWS. Strong positive Pearson correlations (rp = 0.95) indicated stability of water As concentrations over the time period investigated (up to 31 months). Drinking water As concentrations were positively correlated with toenail (rp = 0.53) and hair (rp = 0.38) As concentrations - indicative of prolonged exposure. Analysis of washing procedure solutions provided strong evidence of the effective removal of exogenous As from toenail samples. Significantly higher As concentrations were measured in hair samples from males and smokers and As concentrations in toenails were negatively associated with age. A positive association between seafood consumption and toenail As and a negative association between home-grown vegetable consumption and hair As was observed for volunteers exposed to <1 As μg L(-1) in drinking water. These findings have important implications regarding the interpretation of toenail and hair biomarkers. Substantial variation in biomarker As concentrations remained unaccounted for, with soil and dust exposure as possible explanations.
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Affiliation(s)
- D R S Middleton
- School of Earth, Atmospheric and Environmental Sciences & William Research Centre for Molecular Environmental Science, University of Manchester, Oxford Rd, Manchester, M13 9PL, UK
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25
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Association of beer consumption with arsenic concentration in urine: a result from a cross-sectional study of the general Japanese population. Environ Health Prev Med 2016; 21:327-333. [PMID: 27106572 DOI: 10.1007/s12199-016-0533-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Accepted: 04/10/2016] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVES The first aim of this study was to evaluate the association between time spent living near a contaminated area and concentration of arsenic (As) compounds in the urine among study subjects. The second aim is to assess the association between consumption of various foods or beverages and As concentration in urine among them. METHODS Urine sampling was performed on 177 persons who voluntarily participated in the survey in May 2014. The median value of the sum of inorganic As (iAs) and total As (tAs) compounds was used for us to divide into two groups, such as the high and low iAs and high and low tAs groups. We analyzed data separately in two-age strata of age group A (the subjects <18 years old), and age group B (the subjects ≥18 years old). A multivariate analysis was performed with the logistic regression model to adjust for potential confounding variables. RESULTS No link between time spent living near a contaminated area and urinary As concentration was observed in our study. For age group B, frequently drinking beer was significantly associated with risk of being in the high tAs group (p = 0.008). Compared to not drinking beer, odds ratios (95 % confidence intervals) of drinking beer <1 or 2 times per week, and drinking beer ≥3 or 4 times per week were 3.09 (1.32-7.24) and 3.00 (1.02-8.80), respectively, after adjusting for age, sex, and smoking index. CONCLUSION Frequent consumption of beer may be associated with high tAs in age group B.
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26
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Alamdar A, Ali Musstjab Akber Shah Eqani S, Waqar Ali S, Sohail M, Bhowmik AK, Cincinelli A, Subhani M, Ghaffar B, Ullah R, Huang Q, Shen H. Human Arsenic exposure via dust across the different ecological zones of Pakistan. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2016; 126:219-227. [PMID: 26773831 DOI: 10.1016/j.ecoenv.2015.12.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2015] [Revised: 12/28/2015] [Accepted: 12/31/2015] [Indexed: 05/21/2023]
Abstract
The present study aims to assess the arsenic (As) levels into dust samples and its implications for human health, of four ecological zones of Pakistan, which included northern frozen mountains (FMZ), lower Himalyian wet mountains (WMZ), alluvial riverine plains (ARZ), and low lying agricultural areas (LLZ). Human nail samples (N=180) of general population were also collected from the similar areas and all the samples were analysed by using ICP-MS. In general the higher levels (p<0.05) in paired dust and human nail samples were observed from ARZ and LLZ than those of other mountainous areas (i.e., WMZ and FMZ), respectively. Current results suggested that elevated As concentrations were associated to both natural, (e.g. geogenic influences) and anthropogenic sources. Linear regression model values indicated that As levels into dust samples were associated with altitude (r(2)=0.23), soil carbonate carbon density (SCC; r(2)=0.33), and population density (PD; r(2)=0.25). The relationship of paired dust and nail samples was also investigated and associations were found for As-nail and soil organic carbon density (SOC; r(2)=0.49) and SCC (r(2)=0.19) in each studied zone, evidencing the dust exposure as an important source of arsenic contamination in Pakistan. Risk estimation reflected higher hazard index (HI) values of non-carcinogenic risk (HI>1) for children populations in all areas (except FMZ), and for adults in LLZ (0.74) and ARZ (0.55), suggesting that caution should be paid about the dust exposure. Similarly, carcinogenic risk assessment also highlighted potential threats to the residents of LLZ and ARZ, as in few cases (5-10%) the values exceeded the range of US-EPA threshold limits (10(-6)-10(-4)).
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Affiliation(s)
- Ambreen Alamdar
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Syed Ali Musstjab Akber Shah Eqani
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China; Public health and Environment Division, Department of Biosciences, COMSAT Institute of Information & Technology, Islamabad, Pakistan.
| | - Saeed Waqar Ali
- Public health and Environment Division, Department of Biosciences, COMSAT Institute of Information & Technology, Islamabad, Pakistan
| | - Mohammad Sohail
- Public health and Environment Division, Department of Biosciences, COMSAT Institute of Information & Technology, Islamabad, Pakistan
| | - Avit Kumar Bhowmik
- Institute for Environmental Sciences, University of Koblenz-Landau, Fortstrasse 7, 76829 Landau in der Pfalz, Germany
| | - Alessandra Cincinelli
- Department of Chemistry "Ugo Schiff", University of Florence, 50019 Sesto Fiorentino, Florence, Italy
| | - Marghoob Subhani
- Department of Environmental Sciences, International Islamic University, Islamabad, Pakistan
| | - Bushra Ghaffar
- Department of Environmental Sciences, International Islamic University, Islamabad, Pakistan
| | - Rizwan Ullah
- Department of Zoology, Mirpur University of Science and Technology, Azad Jammu and Kashmir, Pakistan
| | - Qingyu Huang
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Heqing Shen
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
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Bailey KA, Smith AH, Tokar EJ, Graziano JH, Kim KW, Navasumrit P, Ruchirawat M, Thiantanawat A, Suk WA, Fry RC. Mechanisms Underlying Latent Disease Risk Associated with Early-Life Arsenic Exposure: Current Research Trends and Scientific Gaps. ENVIRONMENTAL HEALTH PERSPECTIVES 2016; 124:170-5. [PMID: 26115410 PMCID: PMC4749078 DOI: 10.1289/ehp.1409360] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 06/23/2015] [Indexed: 05/04/2023]
Abstract
BACKGROUND Millions of individuals worldwide, particularly those living in rural and developing areas, are exposed to harmful levels of inorganic arsenic (iAs) in their drinking water. Inorganic As exposure during key developmental periods is associated with a variety of adverse health effects, including those that are evident in adulthood. There is considerable interest in identifying the molecular mechanisms that relate early-life iAs exposure to the development of these latent diseases, particularly in relationship to cancer. OBJECTIVES This work summarizes research on the molecular mechanisms that underlie the increased risk of cancer development in adulthood that is associated with early-life iAs exposure. DISCUSSION Epigenetic reprogramming that imparts functional changes in gene expression, the development of cancer stem cells, and immunomodulation are plausible underlying mechanisms by which early-life iAs exposure elicits latent carcinogenic effects. CONCLUSIONS Evidence is mounting that relates early-life iAs exposure and cancer development later in life. Future research should include animal studies that address mechanistic hypotheses and studies of human populations that integrate early-life exposure, molecular alterations, and latent disease outcomes.
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Affiliation(s)
- Kathryn A. Bailey
- Department of Environmental Sciences and Engineering, UNC Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
| | - Allan H. Smith
- Arsenic Health Effects Research Program, School of Public Health, University of California, Berkeley, Berkeley, California, USA
| | - Erik J. Tokar
- National Toxicology Program, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, North Carolina, USA
| | - Joseph H. Graziano
- Department of Environmental Health Sciences, Columbia University Mailman School of Public Health, New York, New York, USA
| | - Kyoung-Woong Kim
- School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Gwangju, Republic of Korea
| | - Panida Navasumrit
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - Mathuros Ruchirawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - Apinya Thiantanawat
- Laboratory of Environmental Toxicology, Chulabhorn Research Institute, Bangkok, Thailand
| | - William A. Suk
- Superfund Research Program, NIEHS, NIH, DHHS, Research Triangle Park, North Carolina, USA
| | - Rebecca C. Fry
- Department of Environmental Sciences and Engineering, UNC Gillings School of Global Public Health, Chapel Hill, North Carolina, USA
- Address correspondence to R.C. Fry, Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, 135 Dauer Dr., CB 7431, University of North Carolina, Chapel Hill, NC 27599-7295 USA. Telephone: (919) 843-6864. E-mail:
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28
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Punshon T, Davis MA, Marsit CJ, Theiler SK, Baker ER, Jackson Brian P, Conway DC, Karagas MR. Placental arsenic concentrations in relation to both maternal and infant biomarkers of exposure in a US cohort. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2015; 25:599-603. [PMID: 25805251 PMCID: PMC4583336 DOI: 10.1038/jes.2015.16] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2014] [Revised: 01/28/2015] [Accepted: 02/02/2015] [Indexed: 05/19/2023]
Abstract
Arsenic crosses the placenta and may have adverse consequences in utero and later in life. At present, little is known about arsenic concentrations in placenta and their relation to maternal and infant exposures particularly at common levels of exposure. We measured placenta arsenic in a US cohort potentially exposed via drinking water from private wells, and evaluated the relationships between placenta and maternal and infant biomarker arsenic concentrations. We measured total arsenic concentrations in placental samples from women enrolled in the New Hampshire Birth Cohort Study (N=766). We compared these data to maternal urinary arsenic (total arsenic and individual species) collected at approximately 24-28 week gestation, along with maternal post-partum toenails and infant toenails using non-parametric multivariate analysis of log10-transformed data. We also examined the association between placental arsenic and household drinking water arsenic. Placenta arsenic concentrations were related to arsenic concentrations in maternal urine (β 0.55, P value <0.0001), maternal (β 0.30, P value 0.0196) and infant toenails (β 0.40, P value 0.0293) and household drinking water (β 0.09, P value <0.0001). Thus, our data suggest that placenta arsenic concentrations reflect both maternal and infant exposures.
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Affiliation(s)
- Tracy Punshon
- Dartmouth College, Department of Biology, 78 College Street, Hanover, NH, 03755
| | - Matthew A. Davis
- Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755
| | - Carmen J. Marsit
- Geisel School of Medicine, Dartmouth College, Hanover, NH, 03755
| | | | | | - P. Jackson Brian
- Dartmouth College, Department of Biology, 78 College Street, Hanover, NH, 03755
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Farzan SF, Chen Y, Wu F, Jiang J, Liu M, Baker E, Korrick SA, Karagas MR. Blood Pressure Changes in Relation to Arsenic Exposure in a U.S. Pregnancy Cohort. ENVIRONMENTAL HEALTH PERSPECTIVES 2015; 123:999-1006. [PMID: 25793356 PMCID: PMC4590746 DOI: 10.1289/ehp.1408472] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Accepted: 03/18/2015] [Indexed: 05/20/2023]
Abstract
BACKGROUND Inorganic arsenic exposure has been related to the risk of increased blood pressure based largely on cross-sectional studies conducted in highly exposed populations. Pregnancy is a period of particular vulnerability to environmental insults. However, little is known about the cardiovascular impacts of arsenic exposure during pregnancy. OBJECTIVES We evaluated the association between prenatal arsenic exposure and maternal blood pressure over the course of pregnancy in a U.S. METHODS The New Hampshire Birth Cohort Study is an ongoing prospective cohort study in which > 10% of participant household wells exceed the arsenic maximum contaminant level of 10 μg/L established by the U.S. EPA. Total urinary arsenic measured at 24-28 weeks gestation was measured and used as a biomarker of exposure during pregnancy in 514 pregnant women, 18-45 years of age, who used a private well in their household. Outcomes were repeated blood pressure measurements (systolic, diastolic, and pulse pressure) recorded during pregnancy. RESULTS Using linear mixed effects models, we estimated that, on average, each 5-μg/L increase in urinary arsenic was associated with a 0.15-mmHg (95% CI: 0.02, 0.29; p = 0.022) increase in systolic blood pressure per month and a 0.14-mmHg (95% CI: 0.02, 0.25; p = 0.021) increase in pulse pressure per month over the course of pregnancy. CONCLUSIONS In our U.S. cohort of pregnant women, arsenic exposure was associated with greater increases in blood pressure over the course of pregnancy. These findings may have important implications because even modest increases in blood pressure impact cardiovascular disease risk.
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Affiliation(s)
- Shohreh F Farzan
- Children's Environmental Health and Disease Prevention Research Center at Dartmouth, Hanover, New Hampshire, USA
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30
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Reis AP, Costa S, Santos I, Patinha C, Noack Y, Wragg J, Cave M, Sousa AJ. Investigating relationships between biomarkers of exposure and environmental copper and manganese levels in house dusts from a Portuguese industrial city. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2015; 37:725-744. [PMID: 26055455 DOI: 10.1007/s10653-015-9724-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Accepted: 05/29/2015] [Indexed: 06/04/2023]
Abstract
This study reports on data obtained from a pilot survey focusing on house dust and toenail metal(loids) concentrations in residents living in the industrial city of Estarreja. The study design hereby described aims at investigating relationships between human toenails and both copper and manganese levels in settled house dusts. A total of 21 households and 30 individuals were recruited for the pilot study: 19 households corresponding to 27 residents living near the industrial complex, forming the exposed group, plus 2 households and 3 residents from residential areas with no anticipated environmental contaminants that were used for comparison. Factorial analysis was used for source identification purposes. Investigation on the potential influence of environmental factors over copper and manganese levels in the toenails was carried out via questionnaire data and multiple correspondence analysis. The results show that copper concentrations are more elevated in the indoor dusts, while manganese concentrations are more elevated in the outdoor dust samples. The geometrical relationships in the datasets suggest that the backyard soil is a probable source of manganese to the indoor dust. Copper and manganese contents in the toenail clippings are more elevated in children than in adults, but the difference between the two age groups is not statistically significant (p > 0.05). Investigation of environmental factors influencing the exposure-biomarker association indicates a probable relationship between manganese contents in indoor dust and manganese levels in toenail clippings, a result that is partially supported by the bioaccessibility estimates. However, for copper, no relationship was found between indoor dusts and the biomarkers of exposure.
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Affiliation(s)
- A P Reis
- GEOBIOTEC, Departmento de Geociências, Campus Universitário de Santiago, Universidade de Aveiro, 3810-193, Aveiro, Portugal,
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Subhani M, Mustafa I, Alamdar A, Katsoyiannis IA, Ali N, Huang Q, Peng S, Shen H, Eqani SAMAS. Arsenic levels from different land-use settings in Pakistan: Bio-accumulation and estimation of potential human health risk via dust exposure. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 115:187-94. [PMID: 25704277 DOI: 10.1016/j.ecoenv.2015.02.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 02/08/2015] [Accepted: 02/10/2015] [Indexed: 05/21/2023]
Abstract
The present study aims at assessing arsenic (As) levels in outdoor dust and human exposure risks at different land use setting (i.e., rural, industrial, urban) from Punjab, Pakistan. The results showed higher As concentrations (mg/kg) in all the sample types ( i.e., dust, hair and nail) collected from industrial sites (9.78, 2.36, 2.5) followed by urban (7.59, 0.38, 0.88) and rural sites (6.95, 0.52, 1.12), respectively. In the current study, we also carried out human risk assessment via contaminated dust exposure, which suggested that dust ingestion is the major route of As contamination for the associated population, followed by the inhalation and dermal contact, at all studied land use settings. Hazard Index (HI) calculated for non-carcinogenic health risks for adults showed higher values at industrial (0.65) and urban (0.53) sites, which reflected that dust exposure is the major contributing source of human arsenic burden and may pose several adverse health effects. Carcinogenic risk values showed that at industrial areas the risk of carcinogenesis to the associated population is mainly due to As contaminated dust exposure. Hair (60%) and nail samples (70%) collected from industrial land use were found above the WHO threshold limit of 1mg/kg, suggested high risks for human health in the studied area. The results of the present study would be useful for assessing the human health risks due to arsenic contamination via dust exposure in different parts of country.
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Affiliation(s)
- Marghoob Subhani
- Department of Biological Sciences, University of Sargodha, Sargodha, Pakistan
| | - Irfan Mustafa
- Department of Biological Sciences, University of Sargodha, Sargodha, Pakistan
| | - Ambreen Alamdar
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Ioannis A Katsoyiannis
- Aristotle University, Department of Chemistry, Division of Chemical Technology, Box 116, 54124 Thessaloniki, Greece
| | - Nadeem Ali
- Center of Excellence in Environmental Studies, King Abdulaziz University, Jeddah, Kingdom of Saudi Arabia
| | - Qingyu Huang
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Siyuan Peng
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China
| | - Heqing Shen
- Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021, PR China.
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Hunt KM, Srivastava RK, Elmets CA, Athar M. The mechanistic basis of arsenicosis: pathogenesis of skin cancer. Cancer Lett 2014; 354:211-9. [PMID: 25173797 PMCID: PMC4193806 DOI: 10.1016/j.canlet.2014.08.016] [Citation(s) in RCA: 78] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2014] [Revised: 08/12/2014] [Accepted: 08/12/2014] [Indexed: 12/25/2022]
Abstract
Significant amounts of arsenic have been found in the groundwater of many countries including Argentina, Bangladesh, Chile, China, India, Mexico, and the United States with an estimated 200 million people at risk of toxic exposure. Although chronic arsenic poisoning damages many organ systems, it usually first presents in the skin with manifestations including hyperpigmentation, hyperkeratoses, Bowen's disease, squamous cell carcinoma, and basal cell carcinoma. Arsenic promotes oxidative stress by upregulating nicotinamide adenine dinucleotide phosphate oxidase, uncoupling nitric oxide synthase, and by depleting natural antioxidants such as nitric oxide and glutathione in addition to targeting other proteins responsible for the maintenance of redox homeostasis. It causes immune dysfunction and tissue inflammatory responses, which may involve activation of the unfolded protein response signaling pathway. In addition, the dysregulation of other molecular targets such as nuclear factor kappa B, Hippo signaling protein Yap, and the mineral dust-induced proto-oncogene may orchestrate the pathogenesis of arsenic-mediated health effects. The metalloid decreases expression of tumor suppressor molecules and increases expression of pro-inflammatory mitogen-activated protein kinase pathways leading to a tumor-promoting tissue microenvironment. Cooperation of upregulated signal transduction molecules with DNA damage may abrogate apoptosis, promote proliferation, and enhance cell survival. Genomic instability via direct DNA damage and weakening of several cellular DNA repair mechanisms could also be important cancer development mechanisms in arsenic-exposed populations. Thus, arsenic mediates its toxicity by generating oxidative stress, causing immune dysfunction, promoting genotoxicity, hampering DNA repair, and disrupting signal transduction, which may explain the complex disease manifestations seen in arsenicosis.
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Affiliation(s)
- Katherine M Hunt
- University of Alabama at Birmingham, University of Alabama School of Medicine, 1670 University Blvd., Birmingham, Alabama 35233, USA
| | - Ritesh K Srivastava
- Department of Dermatology and Skin Disease Research Center, University of Alabama at Birmingham, VH 509, 1530 3rd Ave. S., Birmingham, Alabama 35294, USA
| | - Craig A Elmets
- Department of Dermatology and Skin Disease Research Center, University of Alabama at Birmingham, VH 509, 1530 3rd Ave. S., Birmingham, Alabama 35294, USA
| | - Mohammad Athar
- Department of Dermatology and Skin Disease Research Center, University of Alabama at Birmingham, VH 509, 1530 3rd Ave. S., Birmingham, Alabama 35294, USA.
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“The arsenic threat: interdependencies of water, agriculture, food supply, public health and energy critical infrastructure”. HEALTH AND TECHNOLOGY 2014. [DOI: 10.1007/s12553-014-0088-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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