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Hunt KJ, Ferguson PL, Bloom MS, Neelon B, Pearce J, Commodore S, Newman RB, Roberts JR, Bain L, Baldwin W, Grobman WA, Sciscione AC, Tita AT, Nageotte MP, Palomares K, Skupski DW, Zhang C, Wapner R, Vena JE. Phthalate and phthalate replacement concentrations in relationship to adiposity in a multi-racial cohort of children. Int J Obes (Lond) 2024; 48:1266-1273. [PMID: 38824227 PMCID: PMC11347365 DOI: 10.1038/s41366-024-01548-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 04/16/2024] [Accepted: 05/17/2024] [Indexed: 06/03/2024]
Abstract
BACKGROUND/OBJECTIVE Phthalates and phthalate replacements are used in multiple everyday products, making many of them bioavailable to children. Experimental studies suggest that phthalates and their replacements may be obesogenic, however, epidemiologic studies remain inconsistent. Therefore, our objective was to examine the association between phthalates, phthalate replacements and childhood adiposity/obesity markers in children. SUBJECTS/METHODS A cross-sectional study was conducted in 630 racial/ethnically diverse children ages 4-8 years. Urinary oxidative metabolites of DINCH and DEHTP, three low molecular weight (LMW) phthalates, and eleven high molecular weight (HMW) phthalates were measured. Weight, height, waist circumference and % body fat were measured. Composite molar sum groups (nmol/ml) were natural log-transformed. Linear regression models adjusted for urine specific gravity, sex, age, race-ethnicity, birthweight, breastfeeding, reported activity level, mother's education and pre-pregnancy BMI. RESULTS All children had LMW and HMW phthalate metabolites and 88% had DINCH levels above the limit of detection. One unit higher in the log of DINCH was associated with 0.106 units lower BMI z-score [β = -0.106 (95% CI: -0.181, -0.031)], 0.119 units lower waist circumference z-score [β = -0.119 (95% CI: -0.189, -0.050)], and 0.012 units lower percent body fat [β = -0.012 (95% CI: -0.019, -0.005)]. LMW and HMW group values were not associated with adiposity/obesity. CONCLUSIONS We report an inverse association between child urinary DINCH levels, a non-phthalate plasticizer that has replaced DEHP in several applications, and BMI z-score, waist circumference z-score and % body fat in children. Few prior studies of phthalates and their replacements in children have been conducted in diverse populations. Moreover, DINCH has not received a great deal of attention or regulation, but it is a common exposure. In summary, understanding the ubiquitous nature of these chemical exposures and ultimately their sources will contribute to our understanding of their relationship with obesity.
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Affiliation(s)
- Kelly J Hunt
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA.
| | - Pamela L Ferguson
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Michael S Bloom
- Department of Global and Community Health, George Mason University, Fairfax, VA, USA
| | - Brian Neelon
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - John Pearce
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
| | - Sarah Commodore
- Department of Environmental and Occupational Health, Indiana University, Bloomington, IN, USA
| | - Roger B Newman
- Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, SC, USA
| | - James R Roberts
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC, USA
| | - Lisa Bain
- Department of Biological Sciences, Clemson, SC, USA
| | | | - William A Grobman
- Department of Obstetrics and Gynecology, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Anthony C Sciscione
- Department of Obstetrics and Gynecology, Christiana Care Health System, Newark, DE, USA
| | - Alan T Tita
- Department of Obstetrics and Gynecology and Center for Women's Reproductive Health, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Michael P Nageotte
- Department of Obstetrics and Gynecology, Miller Children's and Women's Hospital, Long Beach, CA, USA
| | - Kristy Palomares
- Department of Obstetrics and Gynecology, Saint Peter's University Hospital, New Brunswick, NJ, USA
| | - Daniel W Skupski
- Department of Obstetrics and Gynecology, New York Presbyterian Queens Hospital, Queens, NY, USA
| | - Cuilin Zhang
- Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
- Global Center for Asian Women's Health and Department of Obstetrics & Gynaecology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Ronald Wapner
- Department of Obstetrics and Gynecology, Columbia University Medical Center, New York, NY, USA
| | - John E Vena
- Department of Public Health Sciences, Medical University of South Carolina, Charleston, SC, USA
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Gustafsson E, Hellsing MS, Rennie AR, Welbourn RJL, Campana M, Hughes A, Li P, Bowden TM. Understanding interactions of plasticisers with a phospholipid monolayer. SOFT MATTER 2024; 20:2892-2899. [PMID: 38465518 DOI: 10.1039/d3sm01611k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
The use of DEHP (diethylhexyl phthalate) is now banned for most applications in Europe; the exception is for blood bags, where its toxicity is overshadowed by its ability to extend the storage life of red blood cells. Another plasticiser, BTHC (butanoyl trihexyl citrate), is used in paediatric blood bags but does not stabilise blood cells as effectively. Interactions between plasticisers and lipids are investigated with a phospholipid, DMPC, to understand the increased stability of blood cells in the presence of DEHP as well as bioaccumulation and identify differences with BTHC. Mixed monolayers of DMPC and DEHP or BTHC were studied on Langmuir troughs where surface pressure/area isotherms can be measured. Neutron reflection measurements were made to determine the composition and structure of these mixed layers. A large amount of plasticiser can be incorporated into a DMPC monolayer but once an upper limit is reached, plasticiser is selectively removed from the interface at high surface pressures. The upper limit is found to occur between 40-60 mol% for DEHP and 20-40 mol% for BTHC. The areas per molecule are also different with DEHP being in the range of 50-100 Å2 and BTHC being 65-120 Å2. Results indicate that BTHC does not fit as well as DEHP in DMPC monolayers which could help explain the differences observed with regards to the stability of blood cells.
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Affiliation(s)
- Emil Gustafsson
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 538, 752 37 Uppsala, Sweden.
| | - Maja S Hellsing
- RISE Research Institutes of Sweden, Box 5604, 114 86 Stockholm, Sweden
| | - Adrian R Rennie
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 538, 752 37 Uppsala, Sweden.
- Centre for Neutron Scattering, Ångström Laboratory, Uppsala University, Box 538, 752 37 Uppsala, Sweden
| | - Rebecca J L Welbourn
- ISIS Pulsed Neutron and Muon Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Mario Campana
- ISIS Pulsed Neutron and Muon Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Arwel Hughes
- ISIS Pulsed Neutron and Muon Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Peixun Li
- ISIS Pulsed Neutron and Muon Facility, Rutherford Appleton Laboratory, Didcot, Oxfordshire, OX11 0QX, UK
| | - Tim Melander Bowden
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 538, 752 37 Uppsala, Sweden.
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Yang AM, Chu PL, Wang C, Lin CY. Association between urinary glyphosate levels and serum neurofilament light chain in a representative sample of US adults: NHANES 2013-2014. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2024; 34:287-293. [PMID: 37674008 DOI: 10.1038/s41370-023-00594-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 08/02/2023] [Accepted: 08/15/2023] [Indexed: 09/08/2023]
Abstract
BACKGROUND Glyphosate, the herbicide with the highest global usage, has been found to have links to neurological impairment in some occupational studies. Neurofilament light chain (NfL) is a protein that is released into the bloodstream following neuroaxonal damage and has emerged as a reliable biomarker for various neurological disorders. However, no research has investigated the potential link between glyphosate exposure and neurological damage or serum NfL levels in the general population. OBJECTIVE The objective of this study was to assess the possible correlation between glyphosate exposure and serum NfL levels in a population that is representative of the United States. METHODS We analyzed data from 597 adults (aged ≥20 years) from the 2013-2014 National Health and Nutrition Examination Survey (NHANES) to explore the potential correlation between urinary glyphosate levels and serum NfL levels. RESULTS We found a significant positive association between urinary glyphosate levels and serum NfL levels (ß-coefficient = 0.110; S.E. = 0.040; P = 0.015), indicating that higher levels of glyphosate exposure may be linked to higher levels of neuroaxonal damage. Furthermore, when glyphosate levels were divided into quintiles, we observed a significant trend of increasing mean NfL concentrations with increasing quintiles of glyphosate exposure (P for trend = 0.036). Notably, the association was more pronounced in certain subgroups, including those aged ≥40 years, non-Hispanic whites, and those with a BMI between 25 and 30. IMPACT STATEMENT This is the first research to suggest an association between glyphosate exposure and biomarkers indicative of neurological damage in general U.S. adults. If the correlation observed is causal, it raises concerns about the potential effects of glyphosate exposure on neurological health among U.S. adults. The study is noteworthy due to its representation of American adults aged 20 and above, as well as the use of reliable and comprehensive data from the NHANES database.
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Affiliation(s)
- An-Ming Yang
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City, 237, Taiwan
- Department of Healthcare Management, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Pei-Lun Chu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, 242, Taiwan
- Department of Internal Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei, 242, Taiwan
| | - ChiKang Wang
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City, 237, Taiwan.
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, 242, Taiwan.
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan.
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Perez Bravo JJ, Gerbehaye C, Raquez JM, Mincheva R. Recent Advances in Solid-State Modification for Thermoplastic Polymers: A Comprehensive Review. Molecules 2024; 29:667. [PMID: 38338411 PMCID: PMC10856226 DOI: 10.3390/molecules29030667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/27/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
This review introduces groundbreaking insights in polymer science, specifically spotlighting a novel review of the solid-state modification (SSM) approach of thermoplastic polymers, a method not extensively explored. Unlike traditional melt polymer modification, SSM stands out by incorporating monomers or oligomers into the amorphous phase of polymers through innovative exchange reactions. The background of the study places thermoplastics within the context of their increased use over the past century, highlighting their versatility in various applications and the associated environmental and health concerns due to certain additives. The results section outlines the unique aspects of SSM and its increasing recognition for its potential to enhance material performance in areas such as catalysts and composites. It also discusses the application of SSM in modifying different thermoplastic polymers, highlighting various studies demonstrating the method's effectiveness in altering polymer properties. Finally, this work emphasizes SSM's importance in environmental sustainability and its potential in the recycling and upcycling of plastic materials. It acknowledges the challenges and future perspectives in the field, particularly regarding the scalability of SSM techniques for industrial applications and their role in advancing a circular economy in the polymer industry.
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Affiliation(s)
| | | | - Jean-Marie Raquez
- Laboratory of Polymeric and Composite Materials, CIRMAP, University of Mons, 23, Place du Parc, 7000 Mons, Belgium; (J.J.P.B.)
| | - Rosica Mincheva
- Laboratory of Polymeric and Composite Materials, CIRMAP, University of Mons, 23, Place du Parc, 7000 Mons, Belgium; (J.J.P.B.)
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Zamora Z, Wang S, Chen YW, Diamante G, Yang X. Systematic transcriptome-wide meta-analysis across endocrine disrupting chemicals reveals shared and unique liver pathways, gene networks, and disease associations. ENVIRONMENT INTERNATIONAL 2024; 183:108339. [PMID: 38043319 PMCID: PMC11216742 DOI: 10.1016/j.envint.2023.108339] [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: 08/07/2023] [Revised: 11/03/2023] [Accepted: 11/19/2023] [Indexed: 12/05/2023]
Abstract
Cardiometabolic disorders (CMD) are a growing public health problem across the world. Among the known cardiometabolic risk factors are compounds that induce endocrine and metabolic dysfunctions, such as endocrine disrupting chemicals (EDCs). To date, how EDCs influence molecular programs and cardiometabolic risks has yet to be fully elucidated, especially considering the complexity contributed by species-, chemical-, and dose-specific effects. Moreover, different experimental and analytical methodologies employed by different studies pose challenges when comparing findings across studies. To explore the molecular mechanisms of EDCs in a systematic manner, we established a data-driven computational approach to meta-analyze 30 human, mouse, and rat liver transcriptomic datasets for 4 EDCs, namely bisphenol A (BPA), bis(2-ethylhexyl) phthalate (DEHP), tributyltin (TBT), and perfluorooctanoic acid (PFOA). Our computational pipeline uniformly re-analyzed pre-processed quality-controlled microarray data and raw RNAseq data, derived differentially expressed genes (DEGs) and biological pathways, modeled gene regulatory networks and regulators, and determined CMD associations based on gene overlap analysis. Our approach revealed that DEHP and PFOA shared stable transcriptomic signatures that are enriched for genes associated with CMDs, suggesting similar mechanisms of action such as perturbations of peroxisome proliferator-activated receptor gamma (PPARγ) signaling and liver gene network regulators VNN1 and ACOT2. In contrast, TBT exhibited highly divergent gene signatures, pathways, network regulators, and disease associations from the other EDCs. In addition, we found that the rat, mouse, and human BPA studies showed highly variable transcriptomic patterns, providing molecular support for the variability in BPA responses. Our work offers insights into the commonality and differences in the molecular mechanisms of various EDCs and establishes a streamlined data-driven workflow to compare molecular mechanisms of environmental substances to elucidate the underlying connections between chemical exposure and disease risks.
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Affiliation(s)
- Zacary Zamora
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA; Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Susanna Wang
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Yen-Wei Chen
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA; Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | - Graciel Diamante
- Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
| | - Xia Yang
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA; Department of Integrative Biology and Physiology, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA; Institute for Quantitative and Computational Biosciences, University of California, Los Angeles (UCLA), Los Angeles, CA 90095, USA.
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Wang HR, Li MZ, Cui JG, Zhang H, Zhao Y, Li JL. Lycopene Prevents Phthalate-Induced Cognitive Impairment via Modulating Ferroptosis. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2023; 71:16727-16738. [PMID: 37871231 DOI: 10.1021/acs.jafc.3c04801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is frequently used as a plasticizer in industrial and agricultural products. DEHP can cause severe neurotoxicity, such as impaired learning and memory function. Lycopene (LYC) as a carotenoid exerts excellent antioxidant capacity and therapeutic effects in neurodegenerative diseases. However, whether LYC can prevent the cognitive impairment induced by DEHP and the specific mechanisms are unclear. In the present study, the behavioral test results suggested that LYC alleviated the learning and memory impairment induced by DEHP. The histopathological data revealed that LYC attenuated DEHP-induced disordered arrangement of the neurons in the CA1 and CA3 regions of the hippocampus tissue. Moreover, LYC inhibited the occurrence of DEHP-induced ferroptosis via regulating iron metabolism, inhibiting lipid peroxidation, and activating the cysteine transporter and nuclear factor erythroid 2-related factor 2/heme oxygenase-1 (NrF2/HO-1) signaling pathway. Overall, the study contributes novel perspectives into the potential mechanisms of LYC preventing phthalate-induced cognitive impairment in the hippocampus.
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Affiliation(s)
- Hao-Ran Wang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Mu-Zi Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jia-Gen Cui
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Hao Zhang
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Yi Zhao
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
| | - Jin-Long Li
- College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
- Key Laboratory of the Provincial Education Department of Heilongjiang for Common Animal Disease Prevention and Treatment, Northeast Agricultural University, Harbin 150030, P.R. China
- Heilongjiang Key Laboratory for Laboratory Animals and Comparative Medicine, Northeast Agricultural University, Harbin 150030, P.R. China
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Cohen JF, Richardson S, March WW, Gosliner W, Hauser R. Phthalates, adipates, BPA, and pesticides in school meals. ENVIRONMENTAL RESEARCH 2023; 236:116632. [PMID: 37442262 DOI: 10.1016/j.envres.2023.116632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 04/04/2023] [Accepted: 07/10/2023] [Indexed: 07/15/2023]
Abstract
BACKGROUND Exposure to phthalates, adipates, bisphenol-A (BPA), and pesticides may have important health consequences for children, but little is known regarding their presence in school meals, a major food source for children. The aims of this study were to determine the presence of phthalates, adipates, BPA, and pesticides in school meals. METHODS Using a cross-sectional design, n = 50 school meal components were collected from four school districts in New England (n = 8 elementary/K-8 schools) differing preparation methods (on-site scratch cooking and pre-packaged heat and serve meals with plastic films) between 2019 and 2021. Meal components were tested for the presence of phthalates, adipates, BPA, and pesticides by an independent laboratory. RESULTS One adipate, DEHA, was detected in 42% of samples (range 0.08 mg/kg - 50.39 mg/kg). Among the prepackaged foods, DEHA was detected in 86% of samples, which also contained the highest average concentrations among all the samples tested. The phthalate Diisononyl phthalate (DINP) was detected in only one sample, and BPA was not detected in any of the samples tested. Pesticides were detected in 64% of produce and 27% of entrées, but most had levels that were lower than the average levels detected by the USDA's Pesticide Data Program and only one sample had levels that exceeded those detected by the USDA (Cyfluthrin levels in one sample of apples were 0.038 mg/kg compared with an USDA average range of 0.004-0.032 mg/kg). CONCLUSIONS Overall pesticides and phthalate levels in school meals are low and BPA was not detected. However, this study suggests that manufacturers may be changing to less studied plasticizers such as DEHA. More studies should examine the impact of DEHA on human health, particularly among children. As schools transition back from the COVID-19 pandemic, foods packaged in plastic should be minimized where possible. Overall, school meals remain one of the healthiest options for children and policies that support on site cooking can further strengthen the quality of school meals.
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Affiliation(s)
- Juliana Fw Cohen
- Department of Nutrition and Public Health, Merrimack College, USA; Department of Nutrition, Harvard T.H. Chan School of Public Health, USA.
| | - Scott Richardson
- Department of Nutrition, Harvard T.H. Chan School of Public Health, USA
| | - William W March
- Department of Nutrition and Public Health, Merrimack College, USA
| | - Wendi Gosliner
- Nutrition Policy Institute, Division of Agriculture and Natural Resources, University of California, USA
| | - Russ Hauser
- Departments of Environmental Health and Epidemiology, Harvard T.H. Chan School of Public Health, USA
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Chang MH, Chu PL, Wang C, Lin CY. Association between Glyphosate Exposure and Erythrograms in a Representative Sample of US Adults: NHANES 2013-2014. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:91207-91215. [PMID: 37474857 DOI: 10.1007/s11356-023-28905-y] [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: 03/28/2023] [Accepted: 07/17/2023] [Indexed: 07/22/2023]
Abstract
Glyphosate is the most commonly utilized herbicide globally, and a growing body of experimental research has linked its exposure to red blood cell damage. However, the potential toxicity of glyphosate exposure on erythrocytes in the general population remains poorly understood. Therefore, we analyzed data from the 2013-2014 National Health and Nutrition Examination Survey (NHANES) of 1466 adults (≥ 18 years) to explore the potential relationship between glyphosate exposure and erythrocyte profiles. Our results indicated a significant negative association between urinary glyphosate levels and hemoglobin (Hb) and hematocrit (Hct) in multiple regression analysis, with ß coefficients of -0.157 (S.E. = 0.055, P = 0.012) and -0.431 (S.E. = 0.195, P = 0.043), respectively. Additionally, the odds ratio showed a significant increase in individuals with anemia with a one-unit increase in ln-glyphosate levels (odds ratio = 1.523 (95% CI = 1.301 - 1.783), P < 0.001 in the final model). The negative correlation between glyphosate and Hb was more pronounced in subjects older than 60 years, non-Hispanic white ethnicity, lower income, and those with a body mass index (BMI) < 25 and ≥ 30. In conclusion, our results provide preliminary evidence of a plausible association between glyphosate exposure and anemia in a subset of the adult population in the United States. However, further research is necessary to understand the underlying mechanisms and clinical implications of this association.
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Affiliation(s)
- Ming-Hao Chang
- Department of Obstetrics and Gynecology, En Chu Kong Hospital, New Taipei City, 237, Taiwan
| | - Pei-Lun Chu
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, 242, Taiwan
- Department of Internal Medicine, Fu Jen Catholic University Hospital, Fu Jen Catholic University, New Taipei, 242, Taiwan
| | - ChiKang Wang
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Chien-Yu Lin
- School of Medicine, College of Medicine, Fu Jen Catholic University, New Taipei, 242, Taiwan.
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan.
- Department of Internal Medicine, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist., New Taipei City, 237, Taiwan (R.O.C.).
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Liu J, Gao D, Li Y, Song X, Chen M, Ma Q, Wang X, Cui M, Guo T, Chen L, Zhang Y, Yuan W, Ma T, Jiang J, Dong Y, Zou Z, Ma J. Persistent high exposure to exogenous phthalates and endogenous sex hormones associated with early pubertal onset among children: A 3.5-year longitudinal cohort study in China. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115199. [PMID: 37390727 DOI: 10.1016/j.ecoenv.2023.115199] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2023] [Revised: 06/17/2023] [Accepted: 06/26/2023] [Indexed: 07/02/2023]
Abstract
BACKGROUND Early onset of puberty could have significant impacts on childhood health, but the extent to which it was affected by phthalate esters (PAEs) and sex hormone disruption was not understood. The aim of this study is to investigate the associations between exposure to PAEs and sex hormone disruption and early onset of puberty in children. METHODS A longitudinal cohort study was conducted in China from May 2017 to Oct 2020, involving 740 children during consecutive visits. The onset of puberty was evaluated using Tanner definition, and early puberty was defined as an onset age less than the first 25 %, with cut-offs of 10.33 and 8.97 years for boys and girls, respectively. Serum testosterone (TT), estradiol (E2) and urinary PAE metabolites were measured during three visits. Generalized linear models were used to explore the associations between PAE and sex hormones with the age of puberty onset, while log-binomial regressions were applied to assess the associations of persistent exposure to PAEs and sex hormones with early pubertal onset. RESULTS Approximately 86.0 % of boys and 90.2 % of girls completed puberty onset from pre-puberty, and more than 95 % of participants had PAE concentrations higher than the limit of detection. Boys showed higher exposure to PAE pollutants and higher TT levels. Persistent exposure to PAEs was positively associated with early pubertal onset in girls (ARR = 1.97, 95 %CI = 1.12, 3.46). Moreover, persistent exposure to PAEs and E2 had synergistic associations with early pubertal onset in both boys (ARR = 4.77, 95 %CI = 1.06, 21.54) and girls (ARR = 7.07, 95 %CI = 1.51, 33.10). However, PAEs and TT had antagonistic associations only in boys (ARR = 0.44, 95 %CI = 0.07, 2.58). CONCLUSION Long-term exposure to PAEs might increase the risk of early pubertal onset, and it appears to work in synergy with E2, while in antagonism with TT in boys' early pubertal onset. Reducing PAEs exposure might promote pubertal health.
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Affiliation(s)
- Jieyu Liu
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Di Gao
- Department of Obstetrics and Gynecology, Peking University First Hospital, Beijing, China
| | - Yanhui Li
- School of Nursing, Peking University, Beijing, China
| | - Xinli Song
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Manman Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Qi Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Xinxin Wang
- School of Public Health and Management, Ningxia Medical University, Yinchuan, China
| | - Mengjie Cui
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Tongjun Guo
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Li Chen
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Yi Zhang
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Wen Yuan
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Tao Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Jianuo Jiang
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
| | - Yanhui Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China.
| | - Zhiyong Zou
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China.
| | - Jun Ma
- Institute of Child and Adolescent Health, School of Public Health, Peking University, National Health Commission Key Laboratory of Reproductive Health, Beijing, China
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10
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Lucaccioni L, Palandri L, Passini E, Trevisani V, Calandra Buonaura F, Bertoncelli N, Talucci G, Ferrari A, Ferrari E, Predieri B, Facchinetti F, Iughetti L, Righi E. Perinatal and postnatal exposure to phthalates and early neurodevelopment at 6 months in healthy infants born at term. Front Endocrinol (Lausanne) 2023; 14:1172743. [PMID: 37293488 PMCID: PMC10244530 DOI: 10.3389/fendo.2023.1172743] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2023] [Accepted: 05/08/2023] [Indexed: 06/10/2023] Open
Abstract
Background Phthalates are non-persistent chemicals largely used as plasticizers and considered ubiquitous pollutants with endocrine disrupting activity. The exposure during sensible temporal windows as pregnancy and early childhood, may influence physiological neurodevelopment. Aims and Scope The aim of this study is to analyze the relationship between the urinary levels of phthalate metabolites in newborn and infants and the global development measured by the Griffiths Scales of Children Development (GSCD) at six months. Methods Longitudinal cohort study in healthy Italian term newborn and their mothers from birth to the first 6 months of life. Urine samples were collected at respectively 0 (T0), 3 (T3), 6 (T6) months, and around the delivery for mothers. Urine samples were analyzed for a total of 7 major phthalate metabolites of 5 of the most commonly used phthalates. At six months of age a global child development assessment using the third edition of the Griffith Scales of Child Development (GSCD III) was performed in 104 participants. Results In a total of 387 urine samples, the seven metabolites analyzed appeared widespread and were detected in most of the urine samples collected at any time of sampling (66-100%). At six months most of the Developmental Quotients (DQs) falls in average range, except for the subscale B, which presents a DQ median score of 87 (85-95). Adjusted linear regressions between DQs and urinary phthalate metabolite concentrations in mothers at T0 and in infants at T0, T3 and T6 identified several negative associations both for infants' and mothers especially for DEHP and MBzP. Moreover, once stratified by children's sex, negative associations were found in boys while positive in girls. Conclusions Phthalates exposure is widespread, especially for not regulated compounds. Urinary phthalate metabolites were found to be associated to GSCD III scores, showing inverse association with higher phthalate levels related to lower development scores. Our data suggested differences related to the child's sex.
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Affiliation(s)
- Laura Lucaccioni
- Pediatric Unit, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Lucia Palandri
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
- Clinical and Experimental Medicine PhD Program, University of Modena and Reggio Emilia, Modena, Italy
| | - Erica Passini
- Post graduate School of Pediatrics, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Viola Trevisani
- Post graduate School of Pediatrics, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | | | - Natascia Bertoncelli
- Neonatology Unit, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Giovanna Talucci
- Neonatology Unit, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Angela Ferrari
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Eleonora Ferrari
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
| | - Barbara Predieri
- Pediatric Unit, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Fabio Facchinetti
- Unit of Obstetrics and Gynecology, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Lorenzo Iughetti
- Pediatric Unit, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
- Post graduate School of Pediatrics, Department of Medical and Surgical Sciences of the Mother, Children and Adults, University of Modena and Reggio Emilia, Modena, Italy
| | - Elena Righi
- Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy
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11
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Yang AM, Lai TS, Lin YL, Wang C, Lin CY. Urinary di-(2-ethylhexyl) phthalate metabolites are independently related to serum neurofilament light chain, a biomarker of neurological diseases, in adults: results from NHANES 2013-2014. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:66417-66425. [PMID: 37097562 DOI: 10.1007/s11356-023-26943-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 04/07/2023] [Indexed: 05/17/2023]
Abstract
Di (2-ethylhexyl) phthalate (DEHP) is a chemical commonly used in the manufacturing of plastics and can pose human health risks, including endocrine disruption, reproductive toxicity, and potential carcinogenic effects. Children may be particularly vulnerable to the harmful effects of DEHP. Early exposure to DEHP has been linked to potential behavioral and learning problems. However, there are no reports to date on whether DEHP exposure in adulthood has neurotoxic effects. Serum neurofilament light chain (NfL), a protein released into the blood after neuroaxonal damage, has been shown to be a reliable biomarker for many neurological diseases. To date, no study has examined the relationship between DEHP exposure and NfL. For the present study, we selected 619 adults (aged ≥ 20 years) from the 2013-2014 National Health and Nutrition Examination Survey (NHANES) to examine the association between urinary DEHP metabolites and serum NfL. We reported higher urinary levels of ln-mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), ln-mono(2-ethyl-5-oxohexyl) phthalate (MEOHP), and ln-mono(2-ethyl-5-carboxypentyl) phthalate (MECPP), and ln-ΣDEHP levels were associated with higher serum levels of ln-NfL (ΣDEHP: β-coefficient = 0. 075; S.E. = 0.026; P = 0.011). When we divided ΣDEHP into quartiles, mean NfL concentrations increased with quartiles of MEHHP (P for trend = 0.023). The association was more pronounced in males, non-Hispanic white race, higher income, and BMI < 25. In conclusion, higher DEHP exposure was positively associated with higher serum NfL in adults from NHANES 2013-2014. If this finding is causal, it is possible that DEHP exposure in adulthood may also induce neurological damage. Although the causality of this observation and the clinical significance are uncertain, our findings suggest that additional research is needed on DEHP exposure, serum NfL, and neurological disease in adults.
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Affiliation(s)
- An-Ming Yang
- Department of Internal Medicine, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist., New Taipei City, 237, Taiwan
- Department of Healthcare Management, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Tai-Shuan Lai
- Department of Internal Medicine, National Taiwan University Hospital, Taipei, 100, Taiwan
- Department of Internal Medicine, College of Medicine, National Taiwan University, Taipei, 100, Taiwan
| | - Yu-Ling Lin
- Department of Healthcare Management, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
- Department of Nephrology, Hsinchu Cathay General Hospital, Hsinchu, 300, Taiwan
| | - ChiKang Wang
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, No. 399, Fuxing Rd., Sanxia Dist., New Taipei City, 237, Taiwan.
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan.
- School of Medicine, Fu Jen Catholic University, New Taipei City, 242, Taiwan.
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12
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Hatzidaki E, Pagkalou M, Katsikantami I, Vakonaki E, Kavvalakis M, Tsatsakis AM, Tzatzarakis MN. Endocrine-Disrupting Chemicals and Persistent Organic Pollutants in Infant Formulas and Baby Food: Legislation and Risk Assessments. Foods 2023; 12:foods12081697. [PMID: 37107492 PMCID: PMC10137371 DOI: 10.3390/foods12081697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 04/12/2023] [Accepted: 04/14/2023] [Indexed: 04/29/2023] Open
Abstract
Human milk is the healthiest option for newborns, although, under specific circumstances, infant formula is a precious alternative for feeding the baby. Except for the nutritional content, infant formulas and baby food must be pollutant-free. Thus, their composition is controlled by continuous monitoring and regulated by establishing upper limits and guideline values for safe exposure. Legislation differs worldwide, although there are standard policies and strategies for protecting vulnerable infants. This work presents current regulations and directives for restricting endocrine-disrupting chemicals and persistent organic pollutants in infant formulas. Risk assessment studies, which are limited, are necessary to depict exposure variations and assess the health risks for infants from dietary exposure to pollutants.
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Affiliation(s)
- Eleftheria Hatzidaki
- Department of Neonatology & NICU, University Hospital of Heraklion, 71003 Heraklion, Crete, Greece
- Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Marina Pagkalou
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Ioanna Katsikantami
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Elena Vakonaki
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Matthaios Kavvalakis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Aristidis M Tsatsakis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
| | - Manolis N Tzatzarakis
- Laboratory of Toxicology Science and Research, Medical School, University of Crete, 71003 Heraklion, Crete, Greece
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Mansuri A, Kansara K, Raiyani D, Mazmudar D, Kumar A. New insight into long-term effects of phthalates microplastics in developing zebrafish: Evidence from genomic alteration and organ development. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2023; 99:104087. [PMID: 36841272 DOI: 10.1016/j.etap.2023.104087] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 01/19/2023] [Accepted: 02/22/2023] [Indexed: 06/18/2023]
Abstract
The plasticizer leaches from the microplastics are one of the significant concerns related to plastic pollution. These plasticizers are known to be endocrine disrupters; however, little is known about their long-term effect on the development of aquatic vertebrates. Hence, the present study has been conducted to provide a holistic understanding of the effect of the three most common plasticizers, dibutyl phthalate (DBP), diethyl phthalate (DEP), and di-ethylhexyl phthalate (DEHP) leaching out from the microplastics in zebrafish development. Zebrafish larvae were exposed to different phthalates at different concentrations. The phthalates have shown significantly higher mortality and morphological changes in the larva upon exposure compared to the control. A significant change in the genes related to cardiovascular development (krit1, fbn2b), dorsoventral axis development (chrd, smad5), tail formation (pkd2, wnt3a, wnt8a), and floorplate development (foxa2) were also observed under the effects of the phthalates in comparison to control.
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Affiliation(s)
- Abdulkhalik Mansuri
- Biological and Life Sciences, School of Arts & Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India.
| | - Krupa Kansara
- Biological and Engineering Discipline, Indian Institute of Technology - Gandhinagar (IITGN), Palaj 382355, Gujarat, India.
| | - Dixit Raiyani
- Biological and Life Sciences, School of Arts & Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India.
| | - Dhairya Mazmudar
- Biological and Life Sciences, School of Arts & Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India.
| | - Ashutosh Kumar
- Biological and Life Sciences, School of Arts & Sciences, Ahmedabad University, Central Campus, Navrangpura, Ahmedabad 380009, Gujarat, India.
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14
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Li EH, Xu BH, Wei HB, Bai YC, Zhang Q, Yu WW, Xu ZH, Qi XL, Zhang DH, Wang H. Molecular mechanism of di-n-butyl phthalate promotion of bladder cancer development. Toxicol In Vitro 2022; 86:105508. [DOI: 10.1016/j.tiv.2022.105508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 10/15/2022] [Accepted: 10/30/2022] [Indexed: 11/13/2022]
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15
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Ozkemahli G, Ozyurt AB, Erkekoglu P, Zeybek ND, Yersal N, Kocer-Gumusel B. The Effects of Prenatal and Lactational Bisphenol A and/or Di(2-Ethylhexyl) Phthalate Exposure on Female Reproductive System. Toxicol Mech Methods 2022; 32:597-605. [PMID: 35321620 DOI: 10.1080/15376516.2022.2057265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Bisphenol A (BPA) and di(2-ethylhexyl) phthalate (DEHP) are endocrine disrupting chemicals (EDCs) which are abundantly used in polyvinyl chloride plastics, polycarbonates and epoxy resins. Prenatal and early postnatal exposures to EDCs are suggested to be more critical. Such exposures can lead to reprotoxic effects, hormonal and metabolic consequences in adulthood. Moreover, combined exposure to different EDCs can lead to more serious adverse effects, some of which cannot be predicted by examining their individual toxicity profiles. This study aimed to evaluate effects of single and combined prenatal and lactational exposures to BPA and/or DEHP on female reproductive hormones and ovarian follicle development. Pregnant Sprague-Dawley rats were divided randomly to four groups (n = 3/group): Control (received vehicle only); DEHP (30 mg/kg/day); BPA (50 mg/kg/day) and BPA + DEHP (30 mg/kg/day DEHP; 50 mg/kg/day BPA) through 6-21 gestational days and lactation by intra-gastric lavage. Female offspring (n = 6/group) were fed until the end of twelfth postnatal week and then euthanized. Reproductive hormones, ovarian follicle numbers and ovarian development were determined. Plasma testosterone and estradiol levels of BPA and BPA + DEHP groups were significantly lower than control. In BPA group, the number of tertiary ovarian follicles decreased significantly compared to control. In the combined exposure group, the number of corpus luteum (29%) as well as the number of primordial follicles (36%) showed marked decreases compared to control group.It can be suggested that early life exposure to BPA and DEHP may cause late life adverse effects in female reproductive system especially after combined exposure.
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Affiliation(s)
- Gizem Ozkemahli
- Faculty of Pharmacy, Department of Toxicology, Erzincan Binali Yildirim University, Erzincan, Turkey
| | - Aylin Balci Ozyurt
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Hacettepe University, Ankara, Turkey
| | - Pinar Erkekoglu
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Hacettepe University, Ankara, Turkey
| | - Naciye Dilara Zeybek
- Faculty of Medicine, Department of Histology and Embryology, Hacettepe University, Ankara, Turkey
| | - Nilgun Yersal
- Faculty of Medicine, Department of Histology and Embryology, Gaziosmanpasa University, Tokat, Turkey
| | - Belma Kocer-Gumusel
- Faculty of Pharmacy, Department of Pharmaceutical Toxicology, Lokman Hekim University, Ankara, Turkey
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16
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Zhao Y, Song X, Ding S, Qi W, Zhang Y, Xu Q, Zhao T, Zhang X, Li X, Wu F, Ye L. The associations of urinary DEHP metabolite levels, serum thyroid hormones, and thyroid-related genes among the adolescent students from China: a cross-sectional study. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19081-19097. [PMID: 34708313 DOI: 10.1007/s11356-021-16909-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/02/2021] [Indexed: 06/13/2023]
Abstract
Our study aimed to investigate the associations between DEHP exposure and serum thyroid hormone levels in 347 adolescents and young adults. We measured DEHP metabolites including mono(2-ethylhexyl) phthalate (MEHP), mono(2-ethyl-5-oxohexyl) phthalate (MEOHP), mono(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), mono(2-ethyl-5-carboxypentyl) phthalate (MECPP), and mono(2-carboxymethyl)hexyl phthalate (MCMHP) in their urine. Total thyroxine (TT4), total triiodothyronine, free triiodothyronine, free thyroxine (FT4), thyroid-stimulating hormone and the mRNA levels of thyroid peroxidase (TPO), thyroglobulin (TG), sodium iodide symporter (NIS), thyroid transcription factor 1 (TTF-1), and paired box gene 8 (PAX-8) in serum were measured. The results of statistical analysis showed that urinary DEHP metabolites were generally negatively associated with TT4 levels in serum. In the males, the FT4 levels showed positive associations with urinary MEHP, MECPP, MCMHP, and ∑DEHP. The mRNA level of TG was significantly positively correlated with the levels of MECPP, MCMHP, and ∑DEHP, while the levels of TTF-1 and PAX-8 mRNA were significantly positively correlated with the levels of DEHP metabolites. Taken together, DEHP may affect the synthesis of TG by altering the normal transcription of TTF-1 and PAX-8, leading to decreased TT4 levels in Chinese adolescents.
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Affiliation(s)
- Yaming Zhao
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Xinyue Song
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Shuang Ding
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Wen Qi
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Yuezhu Zhang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Qi Xu
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Tianyang Zhao
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Xueting Zhang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Xu Li
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Fuju Wu
- Department of Obstetrics and Gynecology, The Second Hospital of Jilin University, Changchun, China.
| | - Lin Ye
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China.
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17
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Zhang L, Li H, Wang Y, Yang Z, Zhang Z, Liu F, Tong L, Wang Y, Gong Y, Yang H. Characterizing the Semi-Volatile Organic Compounds in Runoff from Roads and Other Impervious Surfaces in a Suburban Area of Beijing. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2022; 82:227-238. [PMID: 34490489 DOI: 10.1007/s00244-021-00884-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Accepted: 08/30/2021] [Indexed: 05/26/2023]
Abstract
Stormwater runoff samples were collected from five different land use sites (gas station, city road, campus, park, and residential) in a precipitation event on May 22nd, 2017, from a small suburban area (5 km × 2 km) of the city of Beijing, China. There were 72 types of semi-volatile organic compounds (SVOCs) found in these runoff samples, including 33 types of monocyclic aromatic hydrocarbons (MAHs), 22 types of polycyclic aromatic hydrocarbons (PAHs), 6 types of phthalate esters (PAEs), 9 types of pesticides and 2 types of polychlorinated biphenyls (PCBs). Especially, 26 types of SVOCs (7 MAHs, 9 PAHs, 5 PAEs, and 5 pesticides) were detected in all water samples. SVOCs concentrations were higher in the samples from gas station and city road, and lower in runoff from campus, park and residential sites. The change in the ratio of anthracene to anthracene plus phenanthrene (ANT/(ANT + PHE)) in this study, reflected the importance of PAH source and land use. Di-2-ethylhexyl phthalate (DEHP) and di-n-butyl phthalate, are two of the phthalate esters 100% detected in the runoff samples. The city road runoff DEHP concentrations recorded the highest values (> 6000 ng/L), however, were still less than those wastewater DEHP pollutants measured in developed countries (e.g. UK, Canada, Finland, etc.). One-way ANOVA analysis in this study, showed that land use could significantly influence 23 SVOCs in the runoff samples, whereas the runoff SVOCs in different precipitation period showed no statistical changes in the five sites, and presented a general temporal trends "high (beginning)-low (middle period)-little raising (ending)". The findings in this study could be used in municipal management of wastewater collection and treatment.
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Affiliation(s)
- Liang Zhang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
- Institute for Ecological Research and Pollution Control of Plateau Lakes, School of Ecology and Environmental Science, Yunnan University, Kunming, 650500, China
| | - Haiyan Li
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
- Beijing Advanced Innovation Center for Future Urban Design, Beijing, 100044, China.
| | - Youshu Wang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Advanced Innovation Center for Future Urban Design, Beijing, 100044, China
| | - Zhichao Yang
- Beijing Center for Physical & Chemical Analysis (BCPCA), Beijing, 100089, China
| | - Ziyang Zhang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Advanced Innovation Center for Future Urban Design, Beijing, 100044, China
| | - Fei Liu
- School of Water Resources and Environment, and Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences, Beijing, 100083, China
| | - Linlin Tong
- School of Water Resources and Environment, and Beijing Key Laboratory of Water Resources and Environmental Engineering, China University of Geosciences, Beijing, 100083, China
| | - Ying Wang
- School of Environment, Beijing Normal University, Beijing, 100875, China
| | - Yongwei Gong
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China
- Beijing Advanced Innovation Center for Future Urban Design, Beijing, 100044, China
| | - Hua Yang
- Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control, Beijing University of Civil Engineering and Architecture, Beijing, 100044, China.
- Beijing Advanced Innovation Center for Future Urban Design, Beijing, 100044, China.
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18
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Zhang X, Qi W, Xu Q, Li X, Zhou L, Ye L. Di(2-ethylhexyl) phthalate (DEHP) and thyroid: biological mechanisms of interference and possible clinical implications. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:1634-1644. [PMID: 34677768 DOI: 10.1007/s11356-021-17027-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Accepted: 10/10/2021] [Indexed: 05/15/2023]
Abstract
Di(2-ethylhexyl) phthalate (DEHP) is a ubiquitous environmental endocrine disruptor. DEHP can be absorbed into the human body through the air, food, water, and skin. After entering the human body, DEHP is rapidly converted to mono(2-ethylhexyl) phthalate (MEHP) with greater toxicity than DEHP. An increasing number of studies indicates that DEHP or MEHP can damage the thyroid tissue and disrupt the function, but the mechanisms remain unclear. This article reviews the toxicity of DEHP on thyroid structures and functions and summarizes the potential mechanisms to provide evidence for preventing the thyroid-related diseases.
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Affiliation(s)
- Xueting Zhang
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Wen Qi
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Qi Xu
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Xu Li
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Liting Zhou
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China
| | - Lin Ye
- Department of Occupational and Environmental Health, School of Public Health, Jilin University, 1163 Xin Min Street, Changchun, 130021, China.
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19
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Baek HS, Won HY, Kim JH, Ha EK, Jee HM, Shin YH, Kim MA, Han MY. Association of phthalate exposure and airway dysfunction with mediation by serum periostin. Pediatr Allergy Immunol 2021; 32:1681-1690. [PMID: 34291496 DOI: 10.1111/pai.13602] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 06/22/2021] [Accepted: 06/24/2021] [Indexed: 12/01/2022]
Abstract
BACKGROUND Phthalates can cause respiratory and immunological disorders. However, little is known about the role of serum periostin and YKL-40 levels in mediating the effects of phthalates. We investigated the mediating role of these biomarkers in the relationship between phthalates and airway dysfunction. METHODS A total of 487 children (aged 10-12 years old) were examined. Four high-molecular-weight phthalate (HMWP) [Σ4 HMWP] metabolites and 3 low-molecular-weight phthalate (LMWP) [Σ3 LMWP] metabolites in urine samples were measured. Serum periostin and YKL-40 levels were measured. Airway function was measured using impulse oscillometry. A mediation model was used to quantify the mediating effects of periostin and YKL-40 on airway dysfunction. RESULTS After adjustment for height, gender, BMI z-score, aeroallergen sensitization, secondary smoking, and vitamin D level, the level of urinary Σ3 LMWP metabolites was significantly associated with respiratory system resistance at 5 Hz (Rrs5; adjusted β: 0.020, 95% CI: 0.005-0.034; p = .010). The levels of urinary Σ4 HMWP and Σ3 LMWP metabolites were significantly associated with periostin level, but not with YKL-40 level. In addition, the periostin level was associated with Rrs5 (adjusted β: 0.048, 95% CI: 0.015-0.081; p = .005) and Rrs20-5 (adjusted β: 0.040, 95% CI: 0.011-0.069; p = .007). Serum periostin level had a significant effect in mediating the relationship between Σ3 LMWP and Rrs5 (13.9%, 95% CI: 10.7-77.0; p < .001). CONCLUSION Exposure to LMWPs was significantly associated with airway dysfunction, and this effect was partially attributable to increased serum periostin level.
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Affiliation(s)
- Hey Sung Baek
- Department of Pediatrics, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ha Young Won
- Clinical Research Institute, Kangdong Sacred Heart Hospital, Hallym University College of Medicine, Seoul, Korea
| | - Ju Hee Kim
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Eun Kyo Ha
- Department of Pediatrics, Kangnam Sacred Heart Hospital, Hallym University Medical Center, Seoul, Korea
| | - Hye Mi Jee
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Youn Ho Shin
- Department of Pediatrics, CHA Gangnam Medical Center, CHA University School of Medicine, Seoul, Korea
| | - Mi-Ae Kim
- Department of Internal Medicine, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
| | - Man Yong Han
- Departments of Pediatrics, CHA Bundang Medical Center, CHA University School of Medicine, Seongnam, Korea
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20
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Ahmad S, Arsalan A, Hashmi A, Khan MA, Siddiqui WA, Younus H. A comparative study based on activity, conformation and computational analysis on the inhibition of human salivary aldehyde dehydrogenase by phthalate plasticizers: Implications in assessing the safety of packaged food items. Toxicology 2021; 462:152947. [PMID: 34534558 DOI: 10.1016/j.tox.2021.152947] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 09/03/2021] [Accepted: 09/10/2021] [Indexed: 11/16/2022]
Abstract
Phthalate plasticizers are commonly used in various consumer-end products. Human salivary aldehyde dehydrogenase (hsALDH) is a detoxifying enzyme which defends us from the toxic aldehydes. Here, the effect of phthalates [Di-2-ethylhexyl phthalate (DEHP), Diethyl phthalate (DEP) and Dibutyl phthalate (DBP)] on hsALDH has been investigated. These plasticizers inhibited hsALDH, and the IC50 values were 0.48 ± 0.04, 283.20 ± 0.09 and 285.00 ± 0.14 μM for DEHP, DEP and DBP, respectively. DEHP was the most potent inhibitor among the three plasticizers. They exhibited mixed-type linear inhibition with inclination towards competitive-non-competitive inhibition. They induced both tertiary and secondary structural changes in the enzyme. Quenching of intrinsic hsALDH fluorescence in a constant manner was observed with a binding constant (Kb) of 8.91 × 106, 2.80 × 104, and 1.31 × 105 M-1, for DEHP, DEP and DBP, respectively. Computational analysis showed that these plasticizers bind stably in the proximity of hsALDH catalytic site, reciprocating via non-covalent interactions with some of the amino acids which are evolutionary conserved. Therefore, exposure to these plasticizers inhibits hsALDH which increases the risk of aldehyde induced toxicity, adversely affecting oral health. The study has implications in assessing the safety of packaged food items which utilize phthalates.
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Affiliation(s)
- Sumbul Ahmad
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Abdullah Arsalan
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Amiruddin Hashmi
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Masood Alam Khan
- Department of Basic Health Sciences, College of Applied Medical Sciences, Qassim University, Buraydah, 51452, Saudi Arabia
| | - Waseem Ahmad Siddiqui
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India
| | - Hina Younus
- Interdisciplinary Biotechnology Unit, Faculty of Life Sciences, Aligarh Muslim University, Aligarh, 202002, India.
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21
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Zhang L, Gao X, Qin Z, Shi X, Xu K, Wang S, Tang M, Wang W, Gao S, Zuo L, Zhang L, Zhang W. USP15 participates in DBP-induced testicular oxidative stress injury through regulating the Keap1/Nrf2 signaling pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 783:146898. [PMID: 34088152 DOI: 10.1016/j.scitotenv.2021.146898] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2020] [Revised: 03/21/2021] [Accepted: 03/28/2021] [Indexed: 06/12/2023]
Abstract
Di-n-butylphthalate (DBP) has been listed as an environmental priority pollutant in China due to its distinct biotoxicity. Epidemiological studies have shown that exposure to DBP is closely related to a series of congenital and acquired defects in the male reproductive system. The oxidative stress injury caused by DBP plays an important role in these defects. Previous studies have demonstrated that the Keap1/Nrf2 antioxidative pathway plays a protective role in DBP-induced oxidative stress injury. However, the further molecular regulation mechanism of the activation of Nrf2 pathway remains unclear. Here, we demonstrate that DBP caused testicular oxidative stress injury and Nrf2 pathway was activated in response to the injury in vivo and in vitro. Moreover, we validated that reduced level of USP15 attenuates DBP-induced oxidative stress injury through restraining the ubiquitylation and degradation of Nrf2. Notably, USP15 is confirmed as a target of miR-135b-5p and miR-135b-5p mediated inhibition of USP15 is involved in the DBP-induced oxidative stress injury. Collectively, these findings indicated that decreased level of USP15 functions a significant protective effect on the oxidative stress injury of testis caused by DBP via regulating the Keap1/Nrf2 signaling pathway.
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Affiliation(s)
- Lei Zhang
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China; Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China.
| | - Xian Gao
- Department of Oncology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Zhiqiang Qin
- Department of Urology and Transplantation, Nanjing First Hospital, Nanjing Medical University, Nanjing 210006, China
| | - Xiaokai Shi
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China
| | - Kai Xu
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China
| | - Shangqian Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Min Tang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Wei Wang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
| | - Shenglin Gao
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China
| | - Li Zuo
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China.
| | - Lifeng Zhang
- Department of Urology, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213003, Jiangsu Province, China.
| | - Wei Zhang
- Department of Urology, The First Affiliated Hospital of Nanjing Medical University, Nanjing 210009, China
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You HH, Song G. Review of endocrine disruptors on male and female reproductive systems. Comp Biochem Physiol C Toxicol Pharmacol 2021; 244:109002. [PMID: 33610819 DOI: 10.1016/j.cbpc.2021.109002] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Revised: 02/03/2021] [Accepted: 02/11/2021] [Indexed: 12/21/2022]
Abstract
Endocrine disruptors (EDs) interfere with different hormonal and metabolic processes and disrupt the development of organs and tissues, as well as the reproductive system. In toxicology research, various animal models have been utilized to compare and characterize the effects of EDs. We reviewed studies assessing the effect of ED exposure in humans, zebrafish, and mouse models and the adverse effects of EDs on male and female reproductive systems. This review outlines the distinctive morphological characteristics, as well as gene expression, factors, and mechanisms that are known to occur in response to EDs. In each animal model, disturbances in the reproductive system were associated with certain factors of apoptosis, the hypothalamic-pituitary-gonadal axis, estrogen receptor pathway-induced meiotic disruption, and steroidogenesis. The effects of bisphenol A, phthalate, and 17α-ethinylestradiol have been investigated in animal models, each providing supporting outcomes and elaborating the key regulators of male and female reproductive systems.
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Affiliation(s)
- Hyekyoung Hannah You
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea
| | - Gwonhwa Song
- Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Republic of Korea.
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Bustamante-Montes LP, Borja-Aburto VH, Hernández-Valero M, García-Fábila MM, Borja-Bustamante P, González-Álvarez R, Acosta-Gordillo GA. Phthalates exposure during pregnancy a study in a Mexican cohort. Toxicol Rep 2021; 8:1040-1045. [PMID: 34040995 PMCID: PMC8142082 DOI: 10.1016/j.toxrep.2021.05.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 05/03/2021] [Accepted: 05/10/2021] [Indexed: 11/25/2022] Open
Abstract
A prospective cohort study was conducted to measure the concentration levels of three primary phthalate metabolites (MBP, MEHP, MEP) during pregnancy in a group of women from the State of Mexico. The urinary concentration levels of the three phthalate primary metabolites were measured by gas chromatography mass spectrometry during the first, second and third trimesters of pregnancy. The geometric mean and 95 % CI for MBP was 20.38 μg/mL (15.35-27.09); for MEHP 13.43 μg/mL (8.93-20.20), and MEP 52.47 μg/mL (39.88-69.04) adjusted to one g of creatinine. No significant trends were observed among the studied metabolites during the pregnancy period. MBP was higher in less educated women, while women who resided in industrialized zones showed higher levels of MEHP and MEP than women from non-industrialized zones. Consumption of plastic bottled beverages was associated with MBP and MEHP phthalate exposure. Women who used non-registered brands of plastic food containers for storage or for microwave oven use showed the highest levels of MBP and MEP phthalates. The pregnant women in our study were exposed to the three studied primary phthalate metabolites, and this could present a risk to their newborns. To better integrate public health policies, major exploration of potential exposure sources and effects at the regional level is required.
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Affiliation(s)
| | - Víctor Hugo Borja-Aburto
- Instituto Mexicano del Seguro Social (IMSS), Coordinacion de Vigilancia Epidemiologica, Ciudad de Mexico, Mexico
| | | | | | - Patricia Borja-Bustamante
- Instituto Mexicano del Seguro Social (IMSS), Coordinacion de Vigilancia Epidemiologica, Ciudad de Mexico, Mexico
| | - Rafael González-Álvarez
- Universidad Autónoma de Guadalajara, Decanato de Ciencias de la Salud, Guadalajara, Jalisco, Mexico
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Phthalate Exposures in the Neonatal Intensive Care Unit. TOXICS 2021; 9:toxics9050090. [PMID: 33919093 PMCID: PMC8143182 DOI: 10.3390/toxics9050090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/31/2021] [Accepted: 04/16/2021] [Indexed: 11/30/2022]
Abstract
Background: Di-2-ethylhexyl phthalate (DEHP), a phthalate compound found in medical devices, may cause toxic effects in premature infants. In this study, the objective is to quantify DEHP exposures from various intravenous and respiratory therapy devices, and to use these values to predict typical exposure for an infant in a neonatal unit. Methods: Common IV products used on infants are directed through various types of IV tubing (IVT) and analyzed for DEHP content. DEHP exposure for infants receiving respiratory therapy was determined indirectly through analysis of urine DEHP metabolites. By deriving these values for DEHP we calculated the daily exposure to DEHP from common IV fluids (IVF) and respiratory devices during hospitalization in a neonatal unit. Results: IVF labeled DEHP-positive showed very high concentrations of DEHP, but when passed through IVT, substantial amounts were adsorbed. DEHP was undetectable with all DEHP-negative IVF tests, except when passed through DEHP-positive IVT. The DEHP leached from most respiratory devices was relatively modest, except that detected from bubble CPAP. In 14 very low birthweight infants, the mean DEHP exposure was 182,369 mcg/kg over 81.2 days of the initial hospitalization. Ninety-eight percent of the exposure was from respiratory devices, with bubble CPAP accounting for 95% of the total DEHP exposure in these infants. Conclusions: The DEHP exposure in our neonatal unit can be reduced markedly by avoiding or modifying bubble CPAP equipment and avoiding IV tubing containing DEHP.
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25
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Elimination of Intravenous Di-2-Ethylhexyl Phthalate Exposure Abrogates Most Neonatal Hypertension in Premature Infants with Bronchopulmonary Dysplasia. TOXICS 2021; 9:toxics9040075. [PMID: 33918157 PMCID: PMC8067010 DOI: 10.3390/toxics9040075] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 03/24/2021] [Accepted: 03/30/2021] [Indexed: 11/24/2022]
Abstract
(1) Background: The incidence of hypertension in very low birthweight (VLBW) infants in a single neonatal intensive care unit (NICU) dropped markedly during a 2-year period when the IV fluid (IVF) in both the antenatal unit and the NICU temporarily changed to a di-2-ethylhexyl phthalate (DEHP)-free formulation. The objective of the current report is to document this observation and demonstrate the changes in incidence of hypertension were not associated with the variation in risk factors for hypertension; (2) Methods: The charts of all VLBW infants born in a single NICU during a 7-year span were reviewed. This time includes 32 months of baseline, 20 months of DEHP-free IVF, 20 months of IVF DEHP re-exposure, and two 4-month washout intervals. The group of interest was limited to VLBW infants with bronchopulmonary dysplasia (BPD). Chi-square analysis was used to compare incidence of hypertension among periods. Vermont Oxford NICU Registry data were examined for variation in maternal and neonatal risk factors for hypertension; Results: Incidence of hypertension in VLBW infants with BPD decreased from 7.7% (baseline) to 1.4% when IVF was DEHP-free, rising back to 10.1% when DEHP-containing IVF returned to use. Risk factors for neonatal hypertension were stable across the 3 study periods in the NICU’s group of VLBW infants; (3) Conclusions: Serendipitous removal of IVF containing DEHP resulted in near elimination of hypertension in one NICU—an effect entirely reversed after the same brand of DEHP-containing IVF returned to clinical use. These results suggest that DEHP exposure from IVF plays a major role in neonatal hypertension.
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26
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Erkekoglu P, Özyurt A, Yirün A, Çakır D. Testicular dysgenesis syndrome and phthalate exposure: A review of literature. ARHIV ZA FARMACIJU 2021. [DOI: 10.5937/arhfarm71-34438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
Endocrine disruptors are chemicals that interfere with the body's endocrine system and cause adverse effects in biological systems. Phthalates are a group of man-made chemicals which are mainly used as plasticizers and classified as endocrine disruptors. They are also used in cosmetic and personal care products as color or smell fixators. Moreover, phthalates are present in inks, adhesives, sealants, automobile parts, tools, toys, carpets, medical tubing and blood storage bags, and food packages. Pathological condition known as "testicular dysgenesis syndrome" (TDS) or "phthalate syndrome" is usually linked to phthalate exposure and is coined to describe the rise in alterations in reproductive health in men, such as reduced semen quality (decrease in sperm counts, sperm motility and increase in abnormal sperms), hypospadias, cryptorchidism, reduced anogenital distance and early-life testicular cancer. Phthalates are suggested to cause direct effect on gonadal and non-gonadal tissues, impair the differentiation and morphogenesis of seminiferous tubules and accessory sex organs and testicular cells (both Sertoli and Leydig cells), alter estradiol and/or testosterone levels, decrease insulin-like 3 (INSL3) peptide production, impair spermatogenesis and lead to epigenetic alterations, all of which may lead to TDS. This review will mainly focus on phthalates as causes of TDS and their mechanisms of action.
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27
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Commentary: …And a beer for the baby, please. Pediatr Res 2020; 88:832-833. [PMID: 32916684 DOI: 10.1038/s41390-020-01130-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 07/29/2020] [Indexed: 11/08/2022]
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28
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Wang Z, Liu Y, Liu X, Zhou L, Ma X, Liu J, Wang L, Guo H. Activation of forkhead box O3a by mono(2-ethylhexyl)phthalate and its role in protection against mono(2-ethylhexyl)phthalate-induced oxidative stress and apoptosis in human cardiomyocytes. J Appl Toxicol 2020; 41:618-631. [PMID: 33029813 DOI: 10.1002/jat.4070] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/25/2020] [Accepted: 08/27/2020] [Indexed: 02/06/2023]
Abstract
Mono(2-ethylhexyl)phthalate (MEHP), the active metabolite of di(2-ethylhexyl)phthalate (DEHP), is known to exert cardiotoxicity. The aim of the present study was to investigate the role of forkhead box O3a (FOXO3a) in MEHP-induced human AC16 cardiomyocyte injuries. MEHP reduced cell viability and mitochondrial membrane potential (ΔΨm), whereas it increased lactate dehydrogenase (LDH) leakage, production of reactive oxygen species (ROS), and apoptosis in cardiomyocytes. The expression of FOXO3a and its target genes, mitochondrial superoxide dismutase (Mn-SOD) and apoptosis repressor with caspase recruitment domain (ARC), increased after MEHP exposure, but the expression of p-FOXO3a protein was decreased. Overexpression of FOXO3a decreased the production of ROS and the apoptosis rate induced by MEHP, and the expression of Mn-SOD and ARC was further increased after MEHP exposure. In contrast, knockdown of FOXO3a resulted in increased ROS production and apoptosis and suppressed the expression of Mn-SOD and ARC in the presence of MEHP. However, overexpression or knockdown of FOXO3a did not affect MEHP-induced loss of ΔΨm. In conclusion, the loss of ΔΨm and apoptosis are involved in MEHP-induced cardiomyocyte toxicity. Activation of FOXO3a defends against MEHP-induced oxidative stress and apoptosis by upregulating the expression of Mn-SOD and ARC in AC16 cardiomyocytes.
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Affiliation(s)
- Zeze Wang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China.,Department of Tropical Medicine, College of Military Preventive Medicine, Army Medical University, Chongqing, China
| | - Yi Liu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Xuehui Liu
- Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, China
| | - Lixiao Zhou
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Xindi Ma
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Junyao Liu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China
| | - Lei Wang
- Department of Medicinal Chemistry, Hebei Medical University, Shijiazhuang, China
| | - Huicai Guo
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, China.,Hebei Key Laboratory of Environment and Human Health, Shijiazhuang, China
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Lin CY, Lee HL, Hwang YT, Wang C, Hsieh CJ, Wu C, Sung FC, Su TC. The association between urine di-(2-ethylhexyl) phthalate metabolites, global DNA methylation, and subclinical atherosclerosis in a young Taiwanese population. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 265:114912. [PMID: 32540595 DOI: 10.1016/j.envpol.2020.114912] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/04/2020] [Accepted: 05/29/2020] [Indexed: 06/11/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) has been utilized in many products for years. DEHP exposure has been linked to cardiovascular diseases (CVD) and its risk factors. Recent evidence has found a crucial role for epigenetics, including DNA methylation, in CVD. Moreover, DEHP exposure has proved to alter DNA methylation in epidemiological studies. However, the interplay between DEHP exposure, global DNA methylation, and atherosclerosis has never been reported. In this current study, we enrolled 793 participants (12-30 years) from a Taiwanese population to investigate the association between concentrations of DEHP metabolites, 5mdC/dG (global DNA methylation marker) and the carotid intima-media thickness (CIMT). The results showed urine mono-2-ethylhexyl phthalate (MEHP) level was positively correlated with 5mdC/dG and CIMT, respectively. In logistic regression models, the odds ratios (OR) of thicker CIMT (greater than 75th percentile) with one unit increase in ln-MEHP level was higher when levels of 5mdC/dG were above 50%. In structural equation model, the result showed urine MEHP levels are directly associated with CIMT. Moreover, MEHP had an indirect association with CIMT through the 5mdC/dG after adjusting other confounding effects. In the current study, urine DEHP metabolite levels were positively correlated with 5mdC/dG, and CIMT. Our results showed DEHP had a direct and indirect association with CIMT through the 5mdC/dG. The finding implies that DNA methylation may mediate the association between DEHP exposures and subclinical atherosclerosis in this young population. Future effort is needed to elucidate the causal relationship between DEHP exposure, DNA methylation and CVD.
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Affiliation(s)
- Chien-Yu Lin
- Department of Internal Medicine, En Chu Kong Hospital, New Taipei City, 237, Taiwan; School of Medicine, Fu Jen Catholic University, New Taipei City, 242, Taiwan; Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Hui-Ling Lee
- Department of Chemistry, Fu Jen Catholic University, New Taipei City, 242, Taiwan
| | - Yi-Ting Hwang
- Department of Statistics, National Taipei University, New Taipei City, 237, Taiwan
| | - Chikang Wang
- Department of Environmental Engineering and Health, Yuanpei University of Medical Technology, Hsinchu, 300, Taiwan
| | - Chia-Jung Hsieh
- Department of Public Health, Tzu Chi University, Hualian County, 970, Taiwan
| | - Charlene Wu
- Global Health Program, College of Public Health, National Taiwan University, Taipei, Taiwan
| | - Fung-Chang Sung
- Department of Health Services Administration, College of Public Health, China Medical University, Taichung, 404, Taiwan
| | - Ta-Chen Su
- Department of Environmental and Occupational Medicine, National Taiwan University Hospital, Taipei, 100, Taiwan; Department of Internal Medicine and Cardiovascular Center, National Taiwan University Hospital, Taipei, 100, Taiwan; Institute of Environmental and Occupational Health Sciences, College of Public Health, National Taiwan University, Taipei, 100, Taiwan.
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Ball DJ, Beierschmitt WP. Permitted Daily Exposure Values: Application Considerations in Toxicological Risk Assessments. Int J Toxicol 2020; 39:577-585. [PMID: 32794434 DOI: 10.1177/1091581820946746] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Permitted daily exposure (PDE) values are used by some toxicologists to support the safety qualification of various types of impurities found in a drug substance (DS) or drug product (DP). Permitted daily exposure values are important tools for the toxicologist, but one must be aware of their limitations to ensure that they are used appropriately and effectively in the risk assessment process. First, a toxicologist must always perform a comprehensive analysis of all available animal and human safety data for an impurity, including identifying any data gaps that may exist. Second, if adequate data are available and there are no genotoxicity concerns, an appropriate well-designed repeat-dose toxicity study in animals should be chosen to calculate the PDE. It is important to note that PDE values qualify general systemic toxicity and not necessarily local toleration end points such as irritation and sensitization that are more concentration than dose dependent. In addition, a PDE value calculated from a general toxicity study in animals may not necessarily qualify for reproductive toxicology end points. Lastly, PDE values should never be thought of as analytical limits for or acceptable levels of an impurity in a DS or DP, as this ignores quality considerations. Using safety information from several chemicals as proxy impurities, this article serves as an educational primer to facilitate a better understanding of the development and use of PDE values in the risk assessment process.
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Weizhen Z, Xiaowei Z, Peng G, Ning W, Zini L, Jian H, Zheng Z. Distribution and risk assessment of phthalates in water and sediment of the Pearl River Delta. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:12550-12565. [PMID: 32002834 DOI: 10.1007/s11356-019-06819-y] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 10/17/2019] [Indexed: 06/10/2023]
Abstract
Phthalate esters (PAEs) are widely used industrial raw materials that are well known for their environmental contamination and toxicological effects as "endocrine disruptors." In this study, environmental levels of PAEs and eco-toxicological risk assessments were determined in the eight estuaries of the Pearl River (Estuaries), main upstream tributary (Xijiang River), urban river network (River network), and nature reserve reservoir (Reservoirs). Water and sediment samples from the above water systems were collected during the low-water period (May) and the high-water period (August) between 2012 and 2014. Solid phase and ultrasonic methods were used to extract 14 different PAEs that were analyzed by gas chromatography. The analytical average recovery of PAEs in water and sediment was 75.4% ± 4.9% and 121.5% ± 8.9%, respectively. The results showed that PAEs were detected in all of the samples, and the di-n-butyl phtalate (DBP) and benzyl butyl phthalate (BBP) monomers had a detection rate of 100% in water. Similarly, in sediment samples, the detection rates of diisobutyl phthalate (DiBP), DBP, dimethoxyethyl phthalate (DMEP), BBP, di-n-octyl phthalate (DnOP), and DNP ranged from 66.7 to 100%. Among these, in sediment samples, di(2-ethylhexyl) phthalate (DEHP) and phthalic acid bis(2-butoxyethyl) ester (DBEP) had detection rates of 95.8% to 100% in the Estuaries, Xijiang River, and River network. The concentrations of Σ14PAEs in water samples and sediments ranged from 12.95 ± 1.97 to 6717.29 ± 112.37 ng/L and 71.99 ± 8.72 to 17,340.04 ± 227.83 ng/g-dw, respectively. During the low-water period, the average concentration of Σ14PAEs in water and sediment was 1159.58 ± 97.22 ng/L and 2842.50 ± 178.21 ng/g-dw, respectively, and during the high-water period, 822.83 ± 53.19 ng/L and 1936.42 ± 111.31 ng/g-dw, respectively. In water, the average concentration of Σ14PAEs in 2013 and 2014 was 963.39 ± 19.55 ng/L and 2815.35 ± 176.32 ng/L, respectively. In sediment, the average concentrations of Σ14PAEs in 2012 to 2014 were 990.10 ± 23.33 ng/g-dw, 1084.20 ± 112.12 ng/g-dw, and 1816.89 ± 79.97 ng/g-dw, respectively, with concentrations showing an increasing trend year after year (2014 > 2013 > 2012). Potential risk assessment of water ecological, the results show that exceeding environmental risk level (ERL) value in higher molecular weight plasticizer (DEHP, DMEP, DNOP, DNP) was mainly distributed in water, the lower molecular weight plasticizer (BMP, DiBP) was mainly distributed in sediment.
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Affiliation(s)
- Zhang Weizhen
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
- Key Laboratory of Urban Agriculture in South China, Ministry of Agriculture, Guangzhou, 510640, People's Republic of China
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, People's Republic of China
- College of Aquatic and Life Science, Shanghai Ocean University, Shanghai, 201306, People's Republic of China
| | - Zheng Xiaowei
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Gu Peng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Wang Ning
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Lai Zini
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, 510380, People's Republic of China.
| | - He Jian
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China
| | - Zheng Zheng
- Department of Environmental Science and Engineering, Fudan University, Shanghai, 200433, People's Republic of China.
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Liang F, Yan B. Oxidative damage in the liver and kidney induced by dermal exposure to diisononyl phthalate in Balb/c mice. Toxicol Ind Health 2020; 36:30-40. [DOI: 10.1177/0748233719900861] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
As a general alternative, diisononyl phthalate (DINP) has gradually replaced di(2-ethylhexyl) phthalate (DEHP) as the main plasticizer used in polyvinyl chloride. Like DEHP, DINP can also be released into the environment, resulting in humans being exposed through skin contact. This study aims to explore whether oxidative damage to hepatic and renal tissues can be induced by dermal exposure to DINP in mice. Forty-two male Balb/c mice were divided into six groups. The five DINP dermal exposure groups were exposed to different doses of DINP (0.02, 0.2, 2, 20, and 200 mg/kg) for 28 consecutive days. The pathological alterations to the skin, liver, and kidney in the mice were examined. Levels of reactive oxygen species (ROS), reduced glutathione (GSH), malondialdehyde (MDA), and DNA-protein cross-links (DPC) in the liver and kidney were also determined to investigate oxidative damage. The experimental results showed that the levels of ROS, MDA, and DPC coefficients increased gradually in a dose-dependent manner, whereas the level of GSH decreased accordingly. When the exposure dose was ≥20 mg/kg, ROS, GSH, MDA content, and the DPC coefficient were significantly different compared to the control group ( p < 0.05). These results suggest that a high dose of DINP can induce oxidative stress and histopathological alterations in the liver and kidney via dermal exposure.
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Affiliation(s)
- Feng Liang
- School of Laboratory Medicine, Hubei University of Chinese Medicine, Wuhan, PR China
| | - Biao Yan
- Research Center of Basic Medical Sciences, Hubei University of Science and Technology, Xianning, PR China
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Ma Y, Liao S, Li Q, Guan Q, Jia P, Zhou Y. Physical and chemical modifications of poly(vinyl chloride) materials to prevent plasticizer migration - Still on the run. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2019.104458] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Navaranjan G, Takaro TK, Wheeler AJ, Diamond ML, Shu H, Azad MB, Becker AB, Dai R, Harris SA, Lefebvre DL, Lu Z, Mandhane PJ, McLean K, Moraes TJ, Scott JA, Turvey SE, Sears MR, Subbarao P, Brook JR. Early life exposure to phthalates in the Canadian Healthy Infant Longitudinal Development (CHILD) study: a multi-city birth cohort. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2020; 30:70-85. [PMID: 31641275 DOI: 10.1038/s41370-019-0182-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 07/22/2019] [Accepted: 08/23/2019] [Indexed: 05/06/2023]
Abstract
BACKGROUND Few studies have examined phthalate exposure during infancy and early life, critical windows of development. The Canadian Healthy Infant Longitudinal Development (CHILD) study, a population-based birth cohort, ascertained multiple exposures during early life. OBJECTIVE To characterize exposure to phthalates during infancy and early childhood. METHODS Environmental questionnaires were administered, and urine samples collected at 3, 12, and 36 months. In the first 1578 children, urine was analyzed for eight phthalate metabolites: mono-methyl phthalate (MMP), mono-ethyl phthalate (MEP), mono-butyl phthalate (MBP), mono-benzyl phthalate (MBzP), mono-2-ethylhexyl phthalate (MEHP), mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP), and mono-3-carboxypropyl phthalate (MCPP). Geometric mean (GM) concentrations were calculated by age, together with factors that may influence concentrations. Trends with age were examined using mixed models and differences within factors examined using ANOVA. RESULTS The highest urinary concentration was for the metabolite MBP at all ages (GM: 15-32 ng/mL). Concentrations of all phthalate metabolites significantly increased with age ranging from GM: 0.5-15.1 ng/mL at 3 months and 1.9-32.1 ng/mL at 36 months. Concentrations of all metabolites were higher in the lowest income categories except for MEHP at 3 months, among children with any breastfeeding at 12 months, and in urine collected on dates with warmer outdoor temperatures (>17 °C), except for MBzP at 3 months and MEHP at 3 and 12 months. No consistent differences were found by gender, study site, or maternal age. CONCLUSIONS Higher phthalate metabolite concentrations were observed among children in lower income families. Examination of factors associated with income could inform interventions aimed to reduce infant phthalate exposure.
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Affiliation(s)
| | | | - Amanda J Wheeler
- Mary MacKillop Institute for Health Research, Australian Catholic University, Melbourne, VIC, Australia
- University of Tasmania, Hobart, TAS, Australia
| | - Miriam L Diamond
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada
| | - Huan Shu
- Stockholm University, Stockholm, Sweden
- Karlstad University, Karlstad, Sweden
| | | | | | - Ruixue Dai
- Hospital for Sick Children, Toronto, ON, Canada
| | - Shelley A Harris
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada
- Cancer Care Ontario, Toronto, ON, Canada
| | | | - Zihang Lu
- Hospital for Sick Children, Toronto, ON, Canada
| | | | | | - Theo J Moraes
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada
- Hospital for Sick Children, Toronto, ON, Canada
| | - James A Scott
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada
| | | | | | - Padmaja Subbarao
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada
- Hospital for Sick Children, Toronto, ON, Canada
| | - Jeffrey R Brook
- University of Toronto, 223 College Street, Toronto, ON, M5T 1R4, Canada.
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Atia T, Abdel-Gawad S. Pulmonary toxicity induced by exposure to phthalates, an experimental study. Inhal Toxicol 2019; 31:376-383. [PMID: 31777295 DOI: 10.1080/08958378.2019.1695025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Background: A plasticizer product, di-(2-ethylhexyl) phthalate (DEHP), is widely used in many consumer products, such as food packages, personal care products, children` toys, and medical devices. Phthalates are known to be released into the biological fluids and redistributed into various tissues linked with multiple health problems.Aim: We aimed to study the possible toxic effect of phthalate exposure on the lung tissues.Methods: Thirty male Wister rats were randomly divided into three groups equally, received the following for two weeks once daily via gastric intubation: control group; received normal saline. The DEHP treated group received 2,85mg/kg per BW of DEHP dissolved in normal saline. The DEHP recovery group, received the same as the treated group, followed by two weeks without any treatment. For light microscopic study; the lung tissues were dissected, cut into small pieces, processed, embedded in paraffin wax, sectioned and stained with Hematoxylin and Eosin as well as Masson trichrome stains. For electron microscopic study; the lung tissues were fixed in glutaraldehyde, processed, embedded in epoxy, cut into ultrathin sections, and stained with uranyl acetate and lead citrate.Results: Compared to the control group, the alveolar tissues in the treated group showed a significant increase in collagen deposition and inflammatory cellular infiltration. The number of type-II pneumocytes and alveolar macrophages/field were also significantly increased. However, these pathological changes improved slightly after stopping exposure to DEHP.Conclusion: DEHP has a toxic effect on the lung tissues, which after its withdrawal did not improve completely.
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Affiliation(s)
- Tarek Atia
- Histology and Cell Biology, Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj, KSA
| | - Sahar Abdel-Gawad
- Histology and Cell Biology, Department of Medical Laboratory Sciences, College of Applied Medical Sciences, Prince Sattam Bin Abdulaziz University, Al-Kharj, KSA
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Jung MK, Choi HS, Suh J, Kwon A, Chae HW, Lee WJ, Yoo EG, Kim HS. The analysis of endocrine disruptors in patients with central precocious puberty. BMC Pediatr 2019; 19:323. [PMID: 31493798 PMCID: PMC6731581 DOI: 10.1186/s12887-019-1703-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 08/30/2019] [Indexed: 11/12/2022] Open
Abstract
Background A few studies have reported a positive association between phthalate exposure and pubertal timing, but several conflicting reports exist. The main objective of the study was to determine whether phthalate exposure was associated with central precocious puberty in girls. Methods This was a multicenter case-control study wherein 47 girls with central precocious puberty (CPP) and 47 controls (26 pre-pubertal girls and 21 pubertal girls) were enrolled. No obese girls were included. Five phthalate metabolites (creatinine adjusted) and bisphenol A (BPA) were measured in the first spot urine samples of these 94 girls in the early morning. Results The median values of monobenzyl phthalate (MBzP), mono-2-ethyl-5-carboxypentyl phthalate (MECPP), mono-2-ethyl-5-hydroxyhexyl phthalate (MEHHP), mono-2-ethyl-5-oxohexyl phthalate (MEOHP), and mono-n-butyl phthalate (MnBP) were 3.1, 29.3, 18.0, 15.4, and 25.2 μg/g creatinine in the CPP group, 4.3, 53.7, 35.7, 29.1, and 66.0 μg/g creatinine in the pre-pubertal control group, and 1.7, 28.7, 21.4, 12.1, and 33.3 μg/g creatinine in the pubertal control group, respectively. The urinary concentration of the five phthalates was significantly lower in the CPP group than in the pre-pubertal control group (P < 0.001). Conversely, there was no significant difference in the urinary concentration of the five phthalates between the CPP and pubertal control groups (P values: 0.077 for MBzP, 0.733 for MECPP, 0.762 for MEHHP, 0.405 for MEOHP, and 0.981 for MnBP). In addition, the BPA level was not significantly different between the CPP and pubertal control groups (BPA median values: 0.63 μg/g creatinine, the CPP group; 1.7 μg/g creatinine, the pubertal control group; P value = 0.092). Conclusions Our study showed that there was no significant difference in the urinary phthalate levels between the CPP and pubertal control groups. Moreover, phthalate metabolites were significantly lower in the CPP group than in the pre-pubertal control group. Further investigation about endocrine disruptors and pubertal progression is needed.
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Affiliation(s)
- Mo Kyung Jung
- Department of Pediatrics, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - Han Saem Choi
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Junghwan Suh
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Ahreum Kwon
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Hyun Wook Chae
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Woo Jung Lee
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea
| | - Eun-Gyong Yoo
- Department of Pediatrics, CHA Bundang Medical Center, CHA University, Seongnam, South Korea
| | - Ho-Seong Kim
- Department of Pediatrics, Severance Children's Hospital, Endocrine Research Institute, Yonsei University College of Medicine, Seoul, South Korea.
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Laboy M. Physical Environments for Active Schools: Future Directions for Transdisciplinary Research. TRANSLATIONAL JOURNAL OF THE AMERICAN COLLEGE OF SPORTS MEDICINE 2019. [DOI: 10.1249/tjx.0000000000000097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Gutiérrez-García AK, Choudhury M, De Leon-Rodriguez A. Diisononyl Phthalate Differentially Affects Sirtuin Expression in the HepG2 Cell Line. Chem Res Toxicol 2019; 32:1863-1870. [DOI: 10.1021/acs.chemrestox.9b00206] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Ana K. Gutiérrez-García
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP México
| | - Mahua Choudhury
- Department of Pharmaceutical Sciences, Irma Lerma Rangel College of Pharmacy, Texas A&M Health Science Center, College Station, Texas 78363, United States
| | - Antonio De Leon-Rodriguez
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4a Sección, C.P. 78216 San Luis Potosí, SLP México
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Jenkins R, Tackitt S, Gievers L, Iragorri S, Sage K, Cornwall T, O'Riordan D, Merchant J, Rozansky D. Phthalate-associated hypertension in premature infants: a prospective mechanistic cohort study. Pediatr Nephrol 2019; 34:1413-1424. [PMID: 31028470 PMCID: PMC6579777 DOI: 10.1007/s00467-019-04244-4] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Revised: 02/05/2019] [Accepted: 03/18/2019] [Indexed: 12/22/2022]
Abstract
BACKGROUND Phthalates are associated with increased blood pressure in children. Large exposures to di-(2-ethylhexyl) phthalate (DEHP) among premature infants have been a cause for concern. METHODS We conducted a prospective observational cohort study to determine if DEHP exposures are related to systolic blood pressure (SBP) in premature infants, and if this exposure is associated with activation of the mineralocorticoid receptor (MR). Infants were monitored longitudinally for 8 months from birth. Those who developed idiopathic hypertension were compared with normotensive infants for DEHP exposures. Appearance of urinary metabolites after exposure was documented. Linear regression evaluated the relationship between DEHP exposures and SBP index and whether urinary cortisol/cortisone ratio (a surrogate marker for 11β-HSD2 activity) mediated those relationships. Urinary exosomes were quantified for sodium transporter/channel expression and interrogated against SBP index. RESULTS Eighteen patients met the study criteria, nine developed transient idiopathic hypertension at a postmenstrual age of 40.6 ± 3.4 weeks. The presence of urinary DEHP metabolites was associated with prior IV and respiratory tubing DEHP exposures (p < 0.05). Both IV and respiratory DEHP exposures were greater in hypertensive infants (p < 0.05). SBP index was related to DEHP exposure from IV fluid (p = 0.018), but not respiratory DEHP. Urinary cortisol/cortisone ratio was related to IV DEHP and SBP index (p < 0.05). Sodium transporter/channel expression was also related to SBP index (p < 0.05). CONCLUSIONS Increased blood pressure and hypertension in premature infants are associated with postnatal DEHP exposure. The mechanism of action appears to be activation of the MR through inhibition of 11β-HSD2.
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MESH Headings
- 11-beta-Hydroxysteroid Dehydrogenases/metabolism
- Administration, Intravenous/adverse effects
- Administration, Intravenous/instrumentation
- Airway Management/adverse effects
- Airway Management/instrumentation
- Blood Pressure/drug effects
- Diethylhexyl Phthalate/toxicity
- Female
- Humans
- Hypertension/chemically induced
- Hypertension/diagnosis
- Hypertension/epidemiology
- Hypertension/metabolism
- Infant, Newborn
- Infant, Premature
- Infant, Premature, Diseases/chemically induced
- Infant, Premature, Diseases/diagnosis
- Infant, Premature, Diseases/epidemiology
- Male
- Plasticizers/toxicity
- Prospective Studies
- Receptors, Mineralocorticoid/metabolism
- Signal Transduction/drug effects
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Affiliation(s)
- Randall Jenkins
- Department of Pediatrics, Oregon Health & Science University, 707 SW Gaines Road, Mail Code CDRC-P, Portland, OR, 97239, USA.
| | | | - Ladawna Gievers
- Department of Pediatrics, Oregon Health & Science University, 707 SW Gaines Road, Mail Code CDRC-P, Portland, OR, 97239, USA
| | - Sandra Iragorri
- Department of Pediatrics, Oregon Health & Science University, 707 SW Gaines Road, Mail Code CDRC-P, Portland, OR, 97239, USA
| | - Kylie Sage
- Biostatistics and Design Program, School of Public Health, Oregon Health & Science University, Portland, OR, USA
| | - Tonya Cornwall
- Department of Pediatrics, Oregon Health & Science University, 707 SW Gaines Road, Mail Code CDRC-P, Portland, OR, 97239, USA
| | | | | | - David Rozansky
- Department of Pediatrics, Oregon Health & Science University, 707 SW Gaines Road, Mail Code CDRC-P, Portland, OR, 97239, USA
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Kim H, Nam K, Oh S, Son S, Jeon D, Gye MC, Shin I. Toxicological assessment of phthalates and their alternatives using human keratinocytes. ENVIRONMENTAL RESEARCH 2019; 175:316-322. [PMID: 31146103 DOI: 10.1016/j.envres.2019.05.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 04/03/2019] [Accepted: 05/06/2019] [Indexed: 06/09/2023]
Abstract
Phthalates are mainly used as binders and plasticizers in various industrial products including detergents, surfactants, waxes, paints, pharmaceuticals, food products, and cosmetics. However, they have been reported to be endocrine disruptors, which are chemicals that can mimic or disturb endocrines, causing interference to the endocrine system. Recently, there have been numerous reports showing that phthalates have negative health impacts such as asthma, breast cancer, obesity, type II diabetes, and male infertility. Due to these effects, there is an urgent need for phthalate alternatives. In this study, the potential cytotoxicity of phthalates and their substitutes were screened in HaCaT cells, a human keratinocyte cell line, using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) thiazolyl blue assay, immunocytochemistry, flow cytometric analysis, and western blotting. We confirmed that common phthalates such as butyl benzyl phthalate (BBP), di-n-butyl phthalate (DBP), and di-2-ethylhexyl phthalate (DEHP) have genotoxic effects, leading to cell death. Among the known phthalate substitutes, tributyl O-acetylcitrate (ATBC), triethyl 2-acetylcitrate (ATEC), and trihexyl O-acetylcitrate (ATHC) were tested for cytotoxicity. As a result, ATEC showed similar levels of cytotoxicity with the phthalates whereas ATBC and ATHC did not show significant cytotoxicity even in high doses (5 mg/ml).
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Affiliation(s)
- Hyungjoo Kim
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea
| | - KeeSoo Nam
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea
| | - Sunhwa Oh
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea
| | - Seogho Son
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea
| | - Donghwan Jeon
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea
| | - Myung Chan Gye
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea.
| | - Incheol Shin
- Department of Life Science, Hanyang University, Seoul, 04763, South Korea; Natural Science Institute, Hanyang University, Seoul, 04763, South Korea.
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Phthalates and Bisphenol-A Determination and Release from Different Beverage Plastic Containers by Dispersive Liquid-Liquid Microextraction and GC-IT/MS Analysis. FOOD ANAL METHOD 2019. [DOI: 10.1007/s12161-019-01602-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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A Method Validation for Simultaneous Determination of Phthalates and Bisphenol A Released from Plastic Water Containers. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9142945] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Phthalates (or phthalate esters, PAEs) and bisphenol A (BPA) are widely used in various industries, particularly in the fields of cosmetics and packaging, and they increase the malleability and workability of materials. As a result of their use, some international health organizations have begun to study them. In this study, the authors developed a methodology for the simultaneous determination of dimethyl phthalate (DMP), diethyl phthalate (DEP), diisobutyl phthalate (DiBP); dibutyl phthalate (DBP), bis(2-ethylhexyl) phthalate (DEHP); di-n-octyl-phthalate (DnOP) and bisphenol A (BPA) from drinking and non-potable waters. The extraction of PAEs and BPA was performed using a solvent-based dispersive liquid–liquid microextraction (SB-DLLME) method. The analytical determination was performed using a gas chromatography–ion trap mass spectrometry (GC-IT/MS) analysis. The entire procedure was validated as recoveries were studied according to the volume and the extraction solvent used, pH, and ionic strength. Dynamic linearity ranges and linear equations of all the compounds were experimentally determined as well as the limit of detection (LOD) (1–8 ng mL−1) and the limit of quantification (LOQ) (5–14 ng mL−1), reproducibility, and sensitivity. The method was applied to 15 water samples (mineral water and tap water) for determining PAEs and BPA released from the plastic container. After the release simulation, four PAEs (i.e., DiBP, DBP, DHEP, and DnOP) were determined at very low concentrations (below 1.2 ng mL−1) in two water samples from (sport) bottles.
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Characterization of phthalate reductase from Ralstonia eutropha CH34 and in silico study of phthalate dioxygenase and phthalate reductase interaction. J Mol Graph Model 2019; 90:161-170. [DOI: 10.1016/j.jmgm.2019.05.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 05/03/2019] [Accepted: 05/03/2019] [Indexed: 12/17/2022]
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44
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Reilly L, Narichania AD, Eckhardt LL. Shocking Aspects of Nonconductive Plastics: Electrophysiologic Implications of Plasticizers. Circ Arrhythm Electrophysiol 2019; 12:e007522. [PMID: 31248278 DOI: 10.1161/circep.119.007522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Louise Reilly
- Cellular and Molecular Arrhythmia Research Program (CMARP) (L.R., L.L.E.), Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin-Madison
| | - Aalap D Narichania
- Cardiac Electrophysiology Service (A.D.N., L.L.E.), Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin-Madison
| | - Lee L Eckhardt
- Cellular and Molecular Arrhythmia Research Program (CMARP) (L.R., L.L.E.), Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin-Madison.,Cardiac Electrophysiology Service (A.D.N., L.L.E.), Division of Cardiovascular Medicine, Department of Medicine, University of Wisconsin-Madison
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Deng C, Li C, Zhou J, Wang Q, Shao H, Wang J, Wu Y, Zhang H, Gao M, Xu X, Jin F. Simultaneous Determination of Eight Monoalkyl Phthalate Esters in Porcine Tissue by Solid-Phase Extraction and Liquid Chromatography-Tandem Mass Spectrometry. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:7167-7173. [PMID: 31240926 DOI: 10.1021/acs.jafc.9b01078] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
An improved method for solid-phase extraction (SPE)-liquid chromatography-tandem mass spectrometry was developed to analyze eight monoalkyl phthalate esters (MPEs) in eight different kinds of porcine tissues. The tissue samples were processed using enzymatic deconjugation with β-glucuronidase, followed by SPE with Oasis MAX cartridges. A pentafluorophenyl column was first used to solve the coeluting issues of MPE isomers. The limits of detection and recoveries were 0.01-0.6 ng/g and 62.5-123.7%, respectively. The intra- and interday precisions were less than 7.1 and 9.4%, respectively. The robust method was successfully applied for the investigation of MPEs in various porcine tissue samples collected from markets in Beijing, China. The occurrence of MPEs with total concentrations of 48.0-108 ng/g was detected, and monoethylhexyl phthalate was the predominant MPE (accounting for 30-57%) in all of the porcine tissue samples. The results will be helpful in assessing the potential risks of diets that include pork.
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Affiliation(s)
- Chao Deng
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Chunmei Li
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Jie Zhou
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Qi Wang
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Hua Shao
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | - Jing Wang
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
| | | | | | | | | | - Fen Jin
- Key Laboratory of Agro-product Quality and Safety, Institute of Quality Standards & Testing Technology for Agro-products , Chinese Academy of Agricultural Sciences , Beijing 100081 , People's Republic of China
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Cordier M, Uehara T. How much innovation is needed to protect the ocean from plastic contamination? THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 670:789-799. [PMID: 30921712 DOI: 10.1016/j.scitotenv.2019.03.258] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 03/07/2019] [Accepted: 03/17/2019] [Indexed: 05/17/2023]
Abstract
Plastics are non-biodegradable, and increasing accumulation of plastic debris in the ocean is a major cause for concern. The World Economic Forum, Ellen MacArthur Foundation, and McKinsey & Company claimed in 2016 that technological innovations can solve the plastic problem. Such a claim raises an as yet unanswered question: how much technological innovation is needed and is it economically feasible? We offer answers to this question via a system dynamics model that we developed to simulate different scenarios aimed at controlling plastic debris entering the global ocean. Our results show that ocean cleanup technologies could achieve a 25% reduction in the level of plastic debris in the ocean below 2010 levels in 2030. However, this would require removing 15% of the stock of plastic debris from the ocean every year over the period 2020-2030, which equates to 135 million tons of plastic in total (metric tons). The implementation cost of such an ocean cleanup effort would amount to €492 billion-€708 billion, which represents 0.7%-1.0% of the world GDP in 2017 - this calculation is based on unit costs in €/kg estimated in The Ocean Cleanup project feasibility study. The Ocean Cleanup project alone is designed to collect 70,320 tons of plastic debris over a 10 year period. Removing 135 million tons of plastic debris would require investing in 1924 similar cleanup projects. These results help to assess the economic feasibility of removing such large volume of plastics. Moreover, our results provide quantitative confirmation that technological solutions alone are not sufficient to solve plastic pollution issues. A portfolio of diverse solutions - not only technological ones - is likely to have greater technical, political and economic feasibility. Our model shows that such a combined portfolio implemented over the period 2020-2030 could reduce the ocean plastic stock to 2013 levels (94 million tons) by 2030.
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Affiliation(s)
- Mateo Cordier
- Research Centre Cultures-Environnements-Arctique-Représentations-Climat (CEARC), Université de Versailles-Saint-Quentin-en-Yvelines, UVSQ, 11 Boulevard d'Alembert, 78280 Guyancourt, France; Centre d'Etudes Economiques et Sociales de l'Environnement-Centre Emile Bernheim (CEESE-CEB), Université Libre de Bruxelles, 44 Avenue Jeanne, C.P. 124, 1050 Brussels, Belgium.
| | - Takuro Uehara
- College of Policy Science, Ritsumeikan University, 2-150 Iwakura-Cho, Ibaraki City 567-8570, Osaka, Japan
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Phthalate side-chain structures and hydrolysis metabolism associated with steroidogenic effects in MLTC-1 Leydig cells. Toxicol Lett 2019; 308:56-64. [DOI: 10.1016/j.toxlet.2019.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2018] [Revised: 02/05/2019] [Accepted: 03/28/2019] [Indexed: 11/19/2022]
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48
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Cornell EM, Janetos TM, Xu S. Time for a makeover-cosmetics regulation in the United States. J Cosmet Dermatol 2019; 18:2041-2047. [PMID: 30950176 DOI: 10.1111/jocd.12886] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2018] [Revised: 10/21/2018] [Accepted: 10/25/2018] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Cosmetics and personal care products are ubiquitous. Consumer pressure arising from recent episodes of products found to be unsafe has led to new policy proposals to modernize cosmetics regulation in the United States. METHODS We reviewed contemporary cosmetics regulation and collected major past and current policy proposals relating to cosmetics regulation with a focus on public health controversies. RESULTS Under a structure originally established in 1938 that places regulation of cosmetics under the Food and Drug Administration (FDA), cosmetics manufacturers in the United States are not required to register their products or forward consumer complaints to the FDA, leading to broad under-reporting of adverse events. The FDA has limited authority to mandate product recalls. The existing FDA database system that collects adverse events related to cosmetics has limited public health utility. Current proposals for new cosmetics regulations seek to establish better systems for data collection and mandatory manufacturer registrations funded by cosmetic manufacturers. Additional policy changes could include a premarket review process for cosmeceuticals (cosmetics that make drug-like claims) and more advanced real-world data safety monitoring tools. CONCLUSIONS With continued consumer concern and several recent cosmetic-related public health controversies, the FDA should be given more resources and broader authority to protect consumer safety.
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Affiliation(s)
- Erika M Cornell
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Timothy M Janetos
- Department of Ophthalmology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | - Shuai Xu
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois
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49
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A Review of Biomonitoring of Phthalate Exposures. TOXICS 2019; 7:toxics7020021. [PMID: 30959800 PMCID: PMC6630674 DOI: 10.3390/toxics7020021] [Citation(s) in RCA: 384] [Impact Index Per Article: 76.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/27/2019] [Accepted: 03/29/2019] [Indexed: 01/19/2023]
Abstract
Phthalates (diesters of phthalic acid) are widely used as plasticizers and additives in many consumer products. Laboratory animal studies have reported the endocrine-disrupting and reproductive effects of phthalates, and human exposure to this class of chemicals is a concern. Several phthalates have been recognized as substances of high concern. Human exposure to phthalates occurs mainly via dietary sources, dermal absorption, and air inhalation. Phthalates are excreted as conjugated monoesters in urine, and some phthalates, such as di-2-ethylhexyl phthalate (DEHP), undergo secondary metabolism, including oxidative transformation, prior to urinary excretion. The occurrence of phthalates and their metabolites in urine, serum, breast milk, and semen has been widely reported. Urine has been the preferred matrix in human biomonitoring studies, and concentrations on the order of several tens to hundreds of nanograms per milliliter have been reported for several phthalate metabolites. Metabolites of diethyl phthalate (DEP), dibutyl- (DBP) and diisobutyl- (DiBP) phthalates, and DEHP were the most abundant compounds measured in urine. Temporal trends in phthalate exposures varied among countries. In the United States (US), DEHP exposure has declined since 2005, whereas DiNP exposure has increased. In China, DEHP exposure has increased since 2000. For many phthalates, exposures in children are higher than those in adults. Human epidemiological studies have shown a significant association between phthalate exposures and adverse reproductive outcomes in women and men, type II diabetes and insulin resistance, overweight/obesity, allergy, and asthma. This review compiles biomonitoring studies of phthalates and exposure doses to assess health risks from phthalate exposures in populations across the globe.
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50
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Oliviero M, Tato T, Schiavo S, Fernández V, Manzo S, Beiras R. Leachates of micronized plastic toys provoke embryotoxic effects upon sea urchin Paracentrotus lividus. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 247:706-715. [PMID: 30721861 DOI: 10.1016/j.envpol.2019.01.098] [Citation(s) in RCA: 111] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/22/2019] [Accepted: 01/23/2019] [Indexed: 06/09/2023]
Abstract
Microplastics are defined as plastic fragments <5 mm, and they are found in the ocean where they can impact on the ecosystem. Once released in seawater, microplastics can be internalized by organisms due to their small size, moreover they can also leach out several additives used in plastic manufacturing, such as plasticizers, flame retardants, etc., resulting toxic for biota. The aim of this study was to test the toxicity of micronized PVC products with three different colors, upon Paracentrotus lividus embryos. In particular, we assessed the effects of micronized plastics and microplastic leachates. Results showed a decrease of larval length in plutei exposed to low concentrations of micronized plastics, and a block of larval development in sea urchin embryos exposed to the highest dose. Virgin PVC polymer did not result toxic on P. lividus embryos, while an evident toxic effect due to leached substances in the medium was observed. In particular, the exposure to leachates induced a development arrest immediately after fertilization or morphological alterations in plutei. Finally, PVC products with different colors showed different toxicity, probably due to a different content and/or combination of heavy metals present in coloring agents.
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Affiliation(s)
- Maria Oliviero
- Department of Science and Technology, Parthenope University of Naples, Centro Direzionale, Isola C4, 80143, Naples, Italy; Enea CR Portici, P.le E. Fermi, 1, 80055, Portici, Naples, Italy.
| | - Tania Tato
- ECIMAT, University of Vigo, Illa de Toralla, E-36331, Vigo, Galicia, Spain
| | - Simona Schiavo
- Department of Science and Technology, Parthenope University of Naples, Centro Direzionale, Isola C4, 80143, Naples, Italy; Enea CR Portici, P.le E. Fermi, 1, 80055, Portici, Naples, Italy
| | - Verónica Fernández
- Grupo Química Analítica Aplicada (QANAP), Instituto Universitario de Medio Ambiente (IUMA), Departamento de Química Analítica, Facultade de Ciencias, Universidade da Coruña, 15071, A Coruña, Spain
| | - Sonia Manzo
- Enea CR Portici, P.le E. Fermi, 1, 80055, Portici, Naples, Italy
| | - Ricardo Beiras
- ECIMAT, University of Vigo, Illa de Toralla, E-36331, Vigo, Galicia, Spain; Department of Ecology and Animal Biology, University of Vigo, Campus Lagoas-Marcosende, 36200, Vigo, Galicia, Spain
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