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Wu W, Wu C, Ji C, Diao F, Peng J, Luo D, Mu X, Ruan X. Association between phthalate exposure and asthma risk: A meta-analysis of observational studies. Int J Hyg Environ Health 2020; 228:113539. [PMID: 32335495 DOI: 10.1016/j.ijheh.2020.113539] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 04/02/2020] [Accepted: 04/14/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND Phthalates are ubiquitously found in numerous environments and have been related to a variety of adverse health effects. Previous studies have suggested that phthalate exposure is associated with asthma risk in humans; however, such findings are inconsistent. METHODS The aim of the present meta-analysis was to clarify the association between phthalate exposure and asthma risk. A literature search was conducted using PubMed, EMBASE and Web of Science for relevant studies published up to January 5, 2020. Fixed-effects or random-effects models were applied to combine the results, and several subgroup analyses were used to explore the sources of heterogeneity. RESULTS A total of 14 studies containing more than 14,000 participants were included in the present study. A positive, significant association between mono-benzyl phthalate (MBzP) levels and asthma risk was found, and the overall odds ratio (OR) was 1.17 (95% confidence interval [CI]: 1.06-1.28, P-value for overall effect [Pz] = 0.001), with a low heterogeneity (P-value for heterogeneity [Phet] = 0.193, I2 = 23.6%). The pooled ORs for mono-(2-ethyl-5-hydroxyhexyl) phthalate (MEHHP) and mono-(2-ethyl-5-carboxypentyl) phthalate (MECPP) concentrations were 1.13 (95% CI: 1.03-1.24, Pz = 0.011) and 1.20 (95% CI: 1.00-1.42, Pz = 0.045), respectively. Children with high levels of MBzP or mono-(carboxynonyl) phthalate (MCNP) were suggested to have increased odds of asthma compared to older populations. In the subgroup analysis by study location, an increased risk for asthma in relation to levels of the sum of di-2-ethylhexyl phthalate (ΣDEHP) was observed in European studies (OR = 1.16, 95% CI: 1.00-1.34, Pz = 0.048) compared to Asia and North America. CONCLUSIONS Urinary levels of MBzP, MEHHP, MECPP, MCNP, and DEHP were positively related to asthma risk. No significant association was observed for the other phthalate metabolites in relation to asthma risk. Further research is needed to verify these findings and shed light on the molecular mechanism by which phthalates are associated with asthma.
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Affiliation(s)
- Weixiang Wu
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China
| | - Chuangyan Wu
- Department of Thoracic Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Cunwei Ji
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China
| | - Fuqiang Diao
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China
| | - Jinglun Peng
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China
| | - Dan Luo
- Guangdong Key Laboratory of Environmental Pollution and Health, School of Environment, Jinan University, Guangzhou, 511443, China
| | - Xiaoping Mu
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China.
| | - Xiaolin Ruan
- Department of Clinical Laboratory, Guangdong Women and Children Hospital, Guangzhou, 511443, China.
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A Simple, Label-Free, and High-Throughput Method to Evaluate the Epigallocatechin-3-Gallate Impact in Plasma Molecular Profile. High Throughput 2020; 9:ht9020009. [PMID: 32283584 PMCID: PMC7349803 DOI: 10.3390/ht9020009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/02/2020] [Accepted: 04/03/2020] [Indexed: 12/27/2022] Open
Abstract
Epigallocatechin-3-gallate (EGCG), the major catechin present in green tea, presents diverse appealing biological activities, such as antioxidative, anti-inflammatory, antimicrobial, and antiviral activities, among others. The present work evaluated the impact in the molecular profile of human plasma from daily consumption of 225 mg of EGCG for 90 days. Plasma from peripheral blood was collected from 30 healthy human volunteers and analyzed by high-throughput Fourier transform infrared spectroscopy. To capture the biochemical information while minimizing the interference of physical phenomena, several combinations of spectra pre-processing methods were evaluated by principal component analysis. The pre-processing method that led to the best class separation, that is, between the plasma spectral data collected at the beginning and after the 90 days, was a combination of atmospheric correction with a second derivative spectra. A hierarchical cluster analysis of second derivative spectra also highlighted the fact that plasma acquired before EGCG consumption presented a distinct molecular profile after the 90 days of EGCG consumption. It was also possible by partial least squares regression discriminant analysis to correctly predict all unlabeled plasma samples (not used for model construction) at both timeframes. We observed that the similarity in composition among the plasma samples was higher in samples collected after EGCG consumption when compared with the samples taken prior to EGCG consumption. Diverse negative peaks of the normalized second derivative spectra, associated with lipid and protein regions, were significantly affected (p < 0.001) by EGCG consumption, according to the impact of EGCG consumption on the patients’ blood, low density and high density lipoproteins ratio. In conclusion, a single bolus dose of 225 mg of EGCG, ingested throughout a period of 90 days, drastically affected plasma molecular composition in all participants, which raises awareness regarding prolonged human exposure to EGCG. Because the analysis was conducted in a high-throughput, label-free, and economic analysis, it could be applied to high-dimension molecular epidemiological studies to further promote the understanding of the effect of bio-compound consumption mode and frequency.
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Cai S, Rao X, Ye J, Ling Y, Mi S, Chen H, Fan C, Li Y. Relationship between urinary bisphenol a levels and cardiovascular diseases in the U.S. adult population, 2003-2014. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 192:110300. [PMID: 32058166 DOI: 10.1016/j.ecoenv.2020.110300] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Revised: 01/18/2020] [Accepted: 02/04/2020] [Indexed: 05/23/2023]
Abstract
BACKGROUND Emerging evidence has identified cardiovascular system as a potential target of Bisphenol A (BPA). Although a few studies have revealed the relationship between BPA and the risk of several cardiovascular diseases (CVD) outcomes and CVD risk factors, no published studies have investigated the link between urinary BPA and the risk of stroke. METHODS Data were derived from the United States National Health and Nutrition Examination Surveys (NHANES), with a representative sample aged ≥20 years (n = 9139) from 2003 to 2014. We performed multivariable logistic regression model to estimate associations between quartiles and natural logarithm transformed urinary BPA concentrations and five specific CVD outcomes and total CVD. RESULTS In quartile analysis, highest level of urinary BPA was associated with increased prevalence of myocardial infarction (MI) (OR = 1.73, 95% CI = 1.11-2.69) and stroke (OR = 1.61, 95% CI = 1.09-2.36), when compared with those at the lowest quartile. Per unit (μg/g creatinine) increment in ln-transformed BPA concentration was shown to be significantly associated with 19%, 19%, 25%, 29%, 20%, and 16% increased odds ratios of prevalence of congestive heart failure, coronary heart disease (CHD), angina pectoris, MI, stroke and total CVD among total participants, respectively. Similar associations were found in males rather than in females. CONCLUSION We provided the premier evidence of positive relationship between urinary BPA concentration and stroke in U.S. POPULATION Urinary BPA levels were also positively correlated with congestive heart failure, CHD, angina pectoris, MI, as well as total CVD. These associations were more evident in males. Well-coordinated and prospective studies are warranted to gain the human effects of BPA on CVD.
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Affiliation(s)
- Shaofang Cai
- Department of Science and Education, The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Xianming Rao
- The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Jianhong Ye
- The Second Affiliated Hospital of Xiamen Medical College, Xiamen, China
| | - Yuxiao Ling
- Department of Epidemiology and Health Statistics, Hangzhou Medical College School of Public Health, Hangzhou, China
| | - Shuai Mi
- Department of Epidemiology and Health Statistics, Hangzhou Medical College School of Public Health, Hangzhou, China
| | - Hanzhu Chen
- Department of Epidemiology and Health Statistics, Hangzhou Medical College School of Public Health, Hangzhou, China
| | - Chunhong Fan
- Department of Epidemiology and Health Statistics, Hangzhou Medical College School of Public Health, Hangzhou, China
| | - Yingjun Li
- Department of Epidemiology and Health Statistics, Hangzhou Medical College School of Public Health, Hangzhou, China.
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Zhao TX, Wang JK, Shen LJ, Long CL, Liu B, Wei Y, Han LD, Wei YX, Wu SD, Wei GH. Increased m6A RNA modification is related to the inhibition of the Nrf2-mediated antioxidant response in di-(2-ethylhexyl) phthalate-induced prepubertal testicular injury. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 259:113911. [PMID: 31923814 DOI: 10.1016/j.envpol.2020.113911] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 12/03/2019] [Accepted: 01/01/2020] [Indexed: 06/10/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP) is a common environmental endocrine disrupting chemical that may induce male reproductive disorders. Exposure to DEHP at a prepubertal stage could lead to prepubertal testicular injury, but the underlying mechanisms remain unclear. In this study, we exposed Sprague-Dawley rats to 0, 250, and 500 mg DEHP per kg body weight per day at the prepuberty stage from postnatal day 22 (PND 22) to PND 35 by oral gavage. Testicular injury and oxidative stress were evaluated, and the levels of 6-methyladenosine (m6A) modification and expression of modulator genes for RNA methylation were measured in testes. Furthermore, m6A modification of the important antioxidant transcription factor Nrf2 was analyzed using methylated RNA immunoprecipitation qPCR. Our results show that DEHP worsened testicular histology, decreased testosterone concentrations, downregulated expression of spermatogenesis inducers, enhanced oxidative stress, inhibited the Nrf2-mediated antioxidant pathway, and increased apoptosis in testes. Additionally, DEHP increased global levels of m6A RNA modification and altered the expression of two important RNA methylation modulator genes, FTO and YTHDC2. Moreover, m6A modification of Nrf2 mRNA increased upon DEHP exposure. Overall, these findings link oxidative stress imbalance with epigenetic effects of DEHP toxicity and provide insight into the testicular toxicity of DEHP from the new perspective of m6A modification.
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Affiliation(s)
- Tian-Xin Zhao
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Jun-Ke Wang
- Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Lian-Ju Shen
- Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Chun-Lan Long
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Bin Liu
- National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Yi Wei
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Lin-Dong Han
- Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Yue-Xin Wei
- Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
| | - Sheng-De Wu
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China.
| | - Guang-Hui Wei
- Department of Urology, Children's Hospital of Chongqing Medical University, Chongqing, 400014, PR China; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, 400014, PR China; Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, 400014, PR China; National Clinical Research Center for Child Health and Disorders, Chongqing, 400014, PR China; China International Science and Technology Cooperation Base of Child Development and Critical Disorders, Chongqing, 400014, PR China; Chongqing Key Laboratory of Pediatrics, Chongqing, 400014, PR China
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105
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Gao S, Liu H, Chang H, Zhang Z, Hu J, Tao S, Wan Y. Visualized Metabolic Disorder and Its Chemical Inducer in Wild Crucian Carp from Taihu Lake, China. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:3343-3352. [PMID: 32091217 DOI: 10.1021/acs.est.0c00099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A variety of anthropogenic chemicals can disrupt the equilibrium of intrinsic biological metabolites in organisms, leading to metabolic disorders and an increased risk of metabolic syndromes. However, exposure to pollutants that induce metabolic disorders in wildlife as a cause of adverse effects is unknown. In this study, approximately 3108 compounds, including 11 groups of metabolites and 388 pollutants, were simultaneously identified in the blood of wild crucian carp (Carassius auratus) captured in three bays of Taihu Lake, China. A visualized network linking thousands of co-regulated metabolites was automatically produced for the screened signals. This comprehensive view of the differences in blood metabolite profiles in carp from the north and south bays showed that triglycerides (TGs) were the intrinsic molecules most affected by differing environmental pollution in each bay. The regional differences in metabolite profiles were linked to exposure to screened perfluorinated compounds that displayed corresponding regional differences in concentrations and effects on TGs in in vivo exposure tests. Perfluoroundecanoic acid (PFUnDA) was the key pollutant responsible for the variation in blood TGs in wild crucian carp, and exposure to PFUnDA resulted in extremely high biological activity on lipid deposition in the liver tissues of crucian carp at environmental levels.
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Affiliation(s)
- Shixiong Gao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Hang Liu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Hong Chang
- Beijing Key Lab for Source Control Technology of Water Pollution, College of Environmental Sciences & Engineering, Beijing Forestry University, Beijing 100083, China
| | - Zhaobin Zhang
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Jianying Hu
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Shu Tao
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
| | - Yi Wan
- Laboratory for Earth Surface Processes, College of Urban and Environmental Sciences, Peking University, Beijing 100871, China
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Huang W, Zheng S, Xiao J, Liu C, Du T, Wu K. Parental exposure to bisphenol A affects pharyngeal cartilage development and causes global transcriptomic changes in zebrafish (Danio rerio) offspring. CHEMOSPHERE 2020; 249:126537. [PMID: 32208220 DOI: 10.1016/j.chemosphere.2020.126537] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/14/2020] [Accepted: 03/16/2020] [Indexed: 02/05/2023]
Abstract
BACKGROUND As one of the most common endocrine-disrupting chemicals (EDCs), bisphenol A (BPA) is a threat to aquatic ecosystems. Despite a rich literature addressing the adverse effects of BPA on various systems in fish models, the potential impact of parental BPA exposure on offspring pharyngeal cartilage development is poorly understood. METHODS Adult zebrafish (F0) were exposed to BPA (1.0 μM) or control for 7 days. Eggs (F1) were collected and exposed to BPA (control, 0.05, 0.1, 1, 10 μM) until 120 h post-fertilization. Histomorphometrical essay was used to quantitatively and qualitatively assess the effects of BPA on pharyngeal cartilage development. RNA sequencing (RNA-seq) was used to discover differentially expressed genes (DEGs), and KEGG pathway and GO enrichment analysis were performed to interpret functional ontology. RESULTS Parental BPA exposure affected hatchability and heart rates of F1 progeny. By pathology analysis, parental BPA exposure caused craniofacial deformity, characterized by wider angles of cartilage elements, disrupted pharyngeal chondrocytes and promoted apoptosis and elongation of head length. RNA-seq suggested that many DEGs were involved in multiple biological processes and signaling pathways; defense responses, reactive oxygen species metabolic process, apoptosis, p53 signaling pathway and MAPK signaling pathway were closely associated with the toxicity of parental BPA exposure. CONCLUSIONS Parental BPA exposure affected chondrogenesis in the viscerocranium of zebrafish offspring and led to global transcriptomic changes involved in apoptosis, hyperplasia and oxidative stress. These newly identified gene expression patterns, pathways and gene networks of zebrafish eleutheroembryos after early-life waterborne BPA exposure, may lead to severe and permanent morphological and functional consequences.
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Affiliation(s)
- Wenlong Huang
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Shukai Zheng
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Jiefeng Xiao
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Caixia Liu
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Taifeng Du
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China
| | - Kusheng Wu
- Department of Preventive Medicine, Shantou University Medical College, Shantou, 515041, Guangdong, China.
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Chuang SC, Chen HC, Sun CW, Chen YA, Wang YH, Chiang CJ, Chen CC, Wang SL, Chen CJ, Hsiung CA. Phthalate exposure and prostate cancer in a population-based nested case-control study. ENVIRONMENTAL RESEARCH 2020; 181:108902. [PMID: 31785779 DOI: 10.1016/j.envres.2019.108902] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 11/05/2019] [Accepted: 11/05/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND Phthalic acid esters are established as endocrine disruptors. The study aimed to evaluate the association between urinary phthalate metabolites and prostate cancer occurrence. METHODS The study was based on the Taiwan Community-Based Cancer Screening Program, which was set up in 1991-1992 and followed periodically. By 2010, 80 incident prostate cancer cases were identified in the 12,020 men. For each case, 2 controls were randomly selected, matched by age (±3 years), urine collection date (±3 months), and residential township. Frequently used phthalate metabolites from the urine samples were quantified by liquid chromatography/electrospray ionization tandem mass spectrometry. Logistic regression was conducted to assess the association between the exposure levels and prostate cancer occurrence. RESULTS Exposure to di (2-ethylhexyl), butyl-benzyl and di-isobutyl phthalates (DEHP, BBzP, DiBP) was positively associated with prostate cancer in men with waist circumference (WC) ≥90 cm but not in the leans. Odds ratio for the DEHP metabolite summary score (upper tertile compared to the rest) and prostate cancer were 7.76 (95% CI = 1.95-30.9) for WC ≥ 90 cm. CONCLUSIONS DEHP, BBzP, and DiBP exposure were associated with prostate cancer occurrence in abdominally obese men. The main limitation remains the lack of mechanistic experiments and comparable toxicological data.
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Affiliation(s)
- Shu-Chun Chuang
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Hui-Chi Chen
- Department of Gynecology and Obstetrics, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Chien-Wen Sun
- National Institute of Environmental Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Yuh-An Chen
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Yin-Han Wang
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Chun-Ju Chiang
- Graduate Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan; Taiwan Cancer Registry, Taipei, Taiwan
| | - Chu-Chih Chen
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan
| | - Shu-Li Wang
- National Institute of Environmental Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan; School of Public Health, National Defense Medical Center, Taipei, Taiwan; Department of Safety, Health and Environmental Engineering, National United University, Miaoli, Taiwan.
| | - Chien-Jen Chen
- Genomics Research Center, Academia Sinica, Taipei, Taiwan.
| | - Chao A Hsiung
- Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Miaoli, Taiwan.
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108
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Li Z, Lyu C, Ren Y, Wang H. Role of TET Dioxygenases and DNA Hydroxymethylation in Bisphenols-Stimulated Proliferation of Breast Cancer Cells. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:27008. [PMID: 32105160 PMCID: PMC7064327 DOI: 10.1289/ehp5862] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
BACKGROUND Bisphenol A (BPA), a ubiquitous environmental endocrine disruptor targeting estrogen receptors (ERs), has been implicated in the promotion of breast cancer. Perinatal exposure of BPA could induce longitudinal alteration of DNA hydroxymethylation in imprinted loci of mouse blood cells. To date, no data has been reported on the effects of BPA on DNA hydroxymethylation in breast cells. Therefore, we asked whether BPA can induce DNA hydroxymethylation change in human breast cells. Given that dysregulated epigenetic DNA hydroxymethylation is observed in various cancers, we wondered how DNA hydroxymethylation modulates cancer development, and specifically, whether and how BPA and its analogs promote breast cancer development via DNA hydroxymethylation. OBJECTIVES We aimed to explore the interplay of the estrogenic activity of bisphenols at environmental exposure dose levels with TET dioxygenase-catalyzed DNA hydroxymethylation and to elucidate their roles in the proliferation of ER+ breast cancer cells as stimulated by environmentally relevant bisphenols. METHODS Human MCF-7 and T47D cell lines were used as ER-dependent breast cell proliferation models, and the human MDA-MB-231 cell line was used as an ER-independent breast cell model. These cells were treated with BPA or bisphenol S (BPS) to examine BPA/BPS-related proliferation. Ultra-high performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) and enzyme-linked immunosorbent assays (ELISAs) were used to detect DNA hydroxymethylation. Crispr/Cas9 and RNA interference technologies, quantitative polymerase chain reaction (qPCR), and Western blot analyses were used to evaluate the expression and function of genes. Co-immunoprecipitation (Co-IP), bisulfite sequencing-PCR (BSP), and chromatin immunoprecipitation-qPCR (ChIP-qPCR) were used to identify the interactions of target proteins. RESULTS We measured higher proliferation in ER+ breast cancer cells treated with BPA or its replacement, BPS, accompanied by an ERα-dependent decrease in genomic DNA hydroxymethylation. The results of our overexpression, knockout, knockdown, and inhibition experiments suggested that TET2-catalyzed DNA hydroxymethylation played a suppressive role in BPA/BPS-stimulated cell proliferation. On the other hand, we observed that TET2 was negatively regulated by the activation of ERα (dimerized and phosphorylated), which was also induced by BPA/BPS binding. Instead of a direct interaction between TET2 and ERα, data of our Co-IP, BSP, and ChIP-qPCR experiments indicated that the activated ERα increased the DNA methyltransferase (DNMT)-mediated promoter methylation of TET2, leading to an inhibition of the TET2 expression and DNA hydroxymethylation. CONCLUSIONS We identified a new feedback circuit of ERα activation-DNMT-TET2-DNA hydroxymethylation in ER+ breast cancer cells and uncovered a pivotal role of TET2-mediated DNA hydroxymethylation in modulating BPA/BPS-stimulated proliferation. Moreover, to our knowledge, we for the first time established a linkage among chemical exposure, DNA hydroxymethylation, and tumor-associated proliferation. These findings further clarify the estrogenic activity of BPA/BPS and its profound implications for the regulation of epigenetic DNA hydroxymethylation and cell proliferation. https://doi.org/10.1289/EHP5862.
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Affiliation(s)
- Zhe Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
| | - Cong Lyu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Yun Ren
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Hailin Wang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- Institute of Environment and Health, Jianghan University, Wuhan, China
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Oulhote Y, Lanphear B, Braun JM, Webster GM, Arbuckle TE, Etzel T, Forget-Dubois N, Seguin JR, Bouchard MF, MacFarlane A, Ouellet E, Fraser W, Muckle G. Gestational Exposures to Phthalates and Folic Acid, and Autistic Traits in Canadian Children. ENVIRONMENTAL HEALTH PERSPECTIVES 2020; 128:27004. [PMID: 32073305 PMCID: PMC7064316 DOI: 10.1289/ehp5621] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
BACKGROUND The etiology of autism spectrum disorder is poorly understood. Few studies have investigated the link between endocrine-disrupting chemicals and autistic traits. We examined the relationship between gestational phthalates and autistic traits in 3- to 4-y-old Canadian children. We also investigated potential effect modification by sex and folic acid supplementation. METHODS We enrolled 2,001 women>18 years of age during the first trimester of pregnancy between 2008 and 2011 from 10 cities in Canada. At 3-4 years of age, 610 children underwent neuropsychological assessments including the Social Responsiveness Scale-II (SRS-2) as a measure of autistic traits and social impairment. We measured 11 phthalate metabolites in maternal first trimester urine samples and assessed folic acid supplementation from reported intakes. We estimated covariate-adjusted differences in SRS-2 T-scores with a doubling in phthalate concentrations in 510 children with complete data. RESULTS Mean total SRS T-score was 45.3 (SD=6.1). Children with higher gestational exposure to mono-n-butyl (MBP) and mono-3-carboxypropyl (MCPP) concentrations exhibited significantly higher total SRS T-scores, indicating greater overall social impairment, as well as higher scores on subdomains, indicating deficits in social cognition, social communication, social motivation, and restricted interests/repetitive behaviors. A doubling in MBP or MCPP concentrations was associated with 0.6 (95% CI: 0.1, 1.0) and 0.5 (95% CI: 0.1, 0.8) higher total SRS T-scores. Associations were consistently and significantly stronger in boys (βMBP=1.0; 95% CI: 0.4, 1.6; n=252) compared with girls (βMBP=0.1; 95% CI: -0.6, 0.7; n=258) and among children who had lower prenatal folic acid supplementation (<400μg/d) (βMBP=1.3; 95% CI: 0.4, 2.3; n=59) compared with those who had adequate folic acid supplementation (≥400μg/d) (βMBP=0.4; 95% CI: -0.1, 0.8; n=451). CONCLUSIONS Higher gestational concentrations of some phthalate metabolites were associated with higher scores of autistic traits as measured by the SRS-2 in boys, but not girls; these small size effects were mitigated by first trimester-of-pregnancy folic acid supplementation. https://doi.org/10.1289/EHP5621.
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Affiliation(s)
- Youssef Oulhote
- Department of Biostatistics and Epidemiology, School of Public Health and Health Sciences, University of Massachusetts at Amherst, Amherst, Massachusetts, USA
- Centre Hospitalier Universitaire (CHU) de Québec Research Centre and School of Psychology, Laval University, Quebec, Quebec, Canada
| | - Bruce Lanphear
- Child and Family Research Institute, BC Children’s Hospital Research Institute and Faculty of Health Sciences, Simon Fraser University, Vancouver, British Columbia, Canada
| | - Joseph M. Braun
- Department of Epidemiology, Brown University, Providence, Rhode Island, USA
| | - Glenys M. Webster
- Child and Family Research Institute, BC Children’s Hospital Research Institute and Faculty of Health Sciences, Simon Fraser University, Vancouver, British Columbia, Canada
| | - Tye E. Arbuckle
- Population Studies Division, Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Taylor Etzel
- Department of Epidemiology, Brown University, Providence, Rhode Island, USA
| | - Nadine Forget-Dubois
- Centre Hospitalier Universitaire (CHU) de Québec Research Centre and School of Psychology, Laval University, Quebec, Quebec, Canada
| | - Jean R. Seguin
- CHU Sainte-Justine Research Centre and Department of Psychiatry, School of Medicine, Université de Montréal, Montreal, Quebec, Canada
| | - Maryse F. Bouchard
- CHU Sainte-Justine Research Centre and Department of Environmental and Occupational Health, School of Public Health, Université de Montréal, Montreal, Quebec, Canada
| | | | - Emmanuel Ouellet
- Centre Hospitalier Universitaire (CHU) de Québec Research Centre and School of Psychology, Laval University, Quebec, Quebec, Canada
| | - William Fraser
- Centre de Sherbrooke Research Centre, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Gina Muckle
- Centre Hospitalier Universitaire (CHU) de Québec Research Centre and School of Psychology, Laval University, Quebec, Quebec, Canada
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110
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El Henafy HMA, Ibrahim MA, Abd El Aziz SA, Gouda EM. Oxidative Stress and DNA methylation in male rat pups provoked by the transplacental and translactational exposure to bisphenol A. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2020; 27:4513-4519. [PMID: 31773524 DOI: 10.1007/s11356-019-06553-5] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 09/16/2019] [Indexed: 06/10/2023]
Abstract
The epigenetic changes induced by environmental contaminants play important roles in the inheritance of male reproductive dysfunction. The present study investigated DNA methylation changes and some oxidative stress biomarkers induced by bisphenol A (BPA) in male offspring. A total number of 48 female albino rats were administered orally with 50 μg/kg of BPA/day during gestation and/or lactation periods. At postnatal day 60, the samples were collected from the male pups to assess the serum testosterone, malondialdehyde (MDA) level, superoxide dismutase (SOD), glutathione S-transferase, and glutathione peroxidase (GSH-Px) activities in testicular tissue. DNA methylation in both DNA (cytosine-5)-methyltransferase 3A and estrogen receptor alpha genes was detected by methylation-specific PCR. BPA exposure resulted in significant decrease in the anogenital distance, testis and epididymis weights, serum testosterone level, SOD, GST, and GSH-Px levels with significant increase in weaning body weight and the MDA level. Additionally, BPA caused marked hypermethylation within Dnmt3A and ER- ∝ genes promoter regions in the testis of rat male pups. Graphical abstract.
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Affiliation(s)
- Hanan M A El Henafy
- Medical Laboratory Department, Faculty of Applied Medical Sciences, October 6 University, Cairo, Egypt
| | - Marwa A Ibrahim
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt.
| | - Samy A Abd El Aziz
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Eman M Gouda
- Biochemistry and Chemistry of Nutrition Department, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
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111
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Celino-Brady FT, Lerner DT, Seale AP. Experimental Approaches for Characterizing the Endocrine-Disrupting Effects of Environmental Chemicals in Fish. Front Endocrinol (Lausanne) 2020; 11:619361. [PMID: 33716955 PMCID: PMC7947849 DOI: 10.3389/fendo.2020.619361] [Citation(s) in RCA: 20] [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: 10/20/2020] [Accepted: 12/30/2020] [Indexed: 12/22/2022] Open
Abstract
Increasing industrial and agricultural activities have led to a disturbing increase of pollutant discharges into the environment. Most of these pollutants can induce short-term, sustained or delayed impacts on developmental, physiological, and behavioral processes that are often regulated by the endocrine system in vertebrates, including fish, thus they are termed endocrine-disrupting chemicals (EDCs). Physiological impacts resulting from the exposure of these vertebrates to EDCs include abnormalities in growth and reproductive development, as many of the prevalent chemicals are capable of binding the receptors to sex steroid hormones. The approaches employed to investigate the action and impact of EDCs is largely dependent on the specific life history and habitat of each species, and the type of chemical that organisms are exposed to. Aquatic vertebrates, such as fish, are among the first organisms to be affected by waterborne EDCs, an attribute that has justified their wide-spread use as sentinel species. Many fish species are exposed to these chemicals in the wild, for either short or prolonged periods as larvae, adults, or both, thus, studies are typically designed to focus on either acute or chronic exposure at distinct developmental stages. The aim of this review is to provide an overview of the approaches and experimental methods commonly used to characterize the effects of some of the environmentally prevalent and emerging EDCs, including 17 α-ethinylestradiol, nonylphenol, BPA, phthalates, and arsenic; and the pervasive and potential carriers of EDCs, microplastics, on reproduction and growth. In vivo and in vitro studies are designed and employed to elucidate the direct effects of EDCs at the organismal and cellular levels, respectively. In silico approaches, on the other hand, comprise computational methods that have been more recently applied with the potential to replace extensive in vitro screening of EDCs. These approaches are discussed in light of model species, age and duration of EDC exposure.
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Affiliation(s)
- Fritzie T. Celino-Brady
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai’i at Mānoa, Honolulu, HI, United States
| | - Darren T. Lerner
- University of Hawai’i Sea Grant College Program, University of Hawai’i at Mānoa, Honolulu, HI, United States
| | - Andre P. Seale
- Department of Human Nutrition, Food and Animal Sciences, University of Hawai’i at Mānoa, Honolulu, HI, United States
- *Correspondence: Andre P. Seale,
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112
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La Merrill MA, Vandenberg LN, Smith MT, Goodson W, Browne P, Patisaul HB, Guyton KZ, Kortenkamp A, Cogliano VJ, Woodruff TJ, Rieswijk L, Sone H, Korach KS, Gore AC, Zeise L, Zoeller RT. Consensus on the key characteristics of endocrine-disrupting chemicals as a basis for hazard identification. Nat Rev Endocrinol 2020; 16:45-57. [PMID: 31719706 PMCID: PMC6902641 DOI: 10.1038/s41574-019-0273-8] [Citation(s) in RCA: 380] [Impact Index Per Article: 95.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 10/02/2019] [Indexed: 12/11/2022]
Abstract
Endocrine-disrupting chemicals (EDCs) are exogenous chemicals that interfere with hormone action, thereby increasing the risk of adverse health outcomes, including cancer, reproductive impairment, cognitive deficits and obesity. A complex literature of mechanistic studies provides evidence on the hazards of EDC exposure, yet there is no widely accepted systematic method to integrate these data to help identify EDC hazards. Inspired by work to improve hazard identification of carcinogens using key characteristics (KCs), we have developed ten KCs of EDCs based on our knowledge of hormone actions and EDC effects. In this Expert Consensus Statement, we describe the logic by which these KCs are identified and the assays that could be used to assess several of these KCs. We reflect on how these ten KCs can be used to identify, organize and utilize mechanistic data when evaluating chemicals as EDCs, and we use diethylstilbestrol, bisphenol A and perchlorate as examples to illustrate this approach.
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Affiliation(s)
- Michele A La Merrill
- Department of Environmental Toxicology, University of California, Davis, CA, USA.
| | - Laura N Vandenberg
- Department of Environmental Health Science, School of Public Health and Health Sciences, University of Masschusetts, Amherst, MA, USA
| | - Martyn T Smith
- School of Public Health, University of California, Berkeley, CA, USA
| | - William Goodson
- California Pacific Medical Center Research Institute, Sutter Hospital, San Francisco, CA, USA
| | - Patience Browne
- Environmental Directorate, Organisation for Economic Co-operation and Development, Paris, France
| | - Heather B Patisaul
- Department of Biological Sciences, North Carolina State University, Raleigh, NC, USA
| | - Kathryn Z Guyton
- International Agency for Research on Cancer, World Health Organization, Lyon, France
| | | | - Vincent J Cogliano
- Office of the Science Advisor, United States Environmental Protection Agency, Washington, DC, USA
| | - Tracey J Woodruff
- Program on Reproductive Health and the Environment, Department of Obstetrics, Gynecology and Reproductive Sciences, University of California, San Francisco, San Francisco, CA, USA
| | - Linda Rieswijk
- School of Public Health, University of California, Berkeley, CA, USA
- Institute of Data Science, Maastricht University, Maastricht, Netherlands
| | - Hideko Sone
- Center for Health and Environmental Risk Research, National Institute for Environmental Studies, Ibaraki, Japan
| | - Kenneth S Korach
- Receptor Biology, Section Reproductive and Developmental Biology Laboratory, National Institute of Environmental Health Science, Durham, NC, USA
| | - Andrea C Gore
- Division of Pharmacology and Toxicology, University of Texas at Austin, Austin, TX, USA
| | - Lauren Zeise
- Office of the Director, Office of Environmental Health Hazard Assessment of the California Environmental Protection Agency, Sacramento, CA, USA
| | - R Thomas Zoeller
- Biology Department, University of Masschusetts, Amherst, MA, USA
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113
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Yang CF, Karmaus WJJ, Yang CC, Chen ML, Wang IJ. Bisphenol a Exposure, DNA Methylation, and Asthma in Children. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17010298. [PMID: 31906378 PMCID: PMC6981376 DOI: 10.3390/ijerph17010298] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 12/16/2019] [Accepted: 12/19/2019] [Indexed: 12/29/2022]
Abstract
Epidemiological studies have reported the relationship between bisphenol A (BPA) exposure and increased prevalence of asthma, but the mechanisms remain unclear. Here, we investigated whether BPA exposure and DNA methylation related to asthma in children. We collected urinary and blood samples from 228 children (Childhood Environment and Allergic Diseases Study cohort) aged 3 years. Thirty-three candidate genes potentially interacting with BPA exposure were selected from a toxicogenomics database. DNA methylation was measured in 22 blood samples with top-high and bottom-low exposures of BPA. Candidate genes with differential methylation levels were validated by qPCR and promoter associated CpG islands have been investigated. Correlations between the methylation percentage and BPA exposure and asthma were analyzed. According to our findings, MAPK1 showed differential methylation and was further investigated in 228 children. Adjusting for confounders, urinary BPA glucuronide (BPAG) level inversely correlated with MAPK1 promoter methylation (β = -0.539, p = 0.010). For the logistic regression analysis, MAPK1 methylation status was dichotomized into higher methylated and lower methylated groups with cut off continuous variable of median of promoter methylation percentage (50%) while performing the analysis. MAPK1 methylation was lower in children with asthma than in children without asthma (mean ± SD; 69.82 ± 5.88% vs. 79.82 ± 5.56%) (p = 0.001). Mediation analysis suggested that MAPK1 methylation acts as a mediation variable between BPA exposure and asthma. The mechanism of BPA exposure on childhood asthma might, therefore, be through the alteration of MAPK1 methylation. The mechanism of BPA exposure on childhood asthma might, therefore, be through the alteration of MAPK1 methylation.
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Affiliation(s)
- Chia-Feng Yang
- Department of Pediatrics, Taipei Veterans General Hospital, Taipei 112, Taiwan;
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - Wilfried J. J. Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN 38152, USA;
| | - Chen-Chang Yang
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - Mei-Lien Chen
- Institute of Environmental and Occupational Health Sciences, National Yang-Ming University, Taipei 112, Taiwan; (C.-C.Y.); (M.-L.C.)
| | - I-Jen Wang
- Department of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, Taipei 242, Taiwan
- School of Medicine, National Yang-Ming University, Taipei 112, Taiwan
- College of Public Health, China Medical University, Taichung 400-439, Taiwan
- National Institutes of Environmental Health Sciences, National Health Research Institutes, Miaoli 35053,Taiwan
- Correspondence: ; Tel.: +886-2-2276-5566 (ext. 2532); Fax: +886-2-2998-8028
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114
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Huang Y, Zhu J, Li H, Wang W, Li Y, Yang X, Zheng N, Liu Q, Zhang Q, Zhang W, Liu J. Cadmium exposure during prenatal development causes testosterone disruption in multigeneration via SF-1 signaling in rats. Food Chem Toxicol 2020; 135:110897. [DOI: 10.1016/j.fct.2019.110897] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 10/15/2019] [Accepted: 10/17/2019] [Indexed: 12/30/2022]
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115
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Camacho J, Truong L, Kurt Z, Chen YW, Morselli M, Gutierrez G, Pellegrini M, Yang X, Allard P. The Memory of Environmental Chemical Exposure in C. elegans Is Dependent on the Jumonji Demethylases jmjd-2 and jmjd-3/utx-1. Cell Rep 2019; 23:2392-2404. [PMID: 29791850 PMCID: PMC6003705 DOI: 10.1016/j.celrep.2018.04.078] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2017] [Revised: 03/15/2018] [Accepted: 04/17/2018] [Indexed: 01/05/2023] Open
Abstract
How artificial environmental cues are biologically integrated and transgenerationally inherited is still poorly understood. Here, we investigate the mechanisms of inheritance of reproductive outcomes elicited by the model environmental chemical Bisphenol A in C. elegans. We show that Bisphenol A (BPA) exposure causes the derepression of an epigenomically silenced transgene in the germline for 5 generations, regardless of ancestral response. Chromatin immunoprecipitation sequencing (ChIP-seq), histone modification quantitation, and immunofluorescence assays revealed that this effect is associated with a reduction of the repressive marks H3K9me3 and H3K27me3 in whole worms and in germline nuclei in the F3, as well as with reproductive dysfunctions, including germline apoptosis and embryonic lethality. Furthermore, targeting of the Jumonji demethylases JMJD-2 and JMJD-3/UTX-1 restores H3K9me3 and H3K27me3 levels, respectively, and it fully alleviates the BPA-induced transgenerational effects. Together, our results demonstrate the central role of repressive histone modifications in the inheritance of reproductive defects elicited by a common environmental chemical exposure.
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Affiliation(s)
- Jessica Camacho
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Lisa Truong
- Human Genetics and Genomic Analysis Training Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Zeyneb Kurt
- Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Yen-Wei Chen
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Marco Morselli
- Molecular, Cell and Developmental Biology Department, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Gerardo Gutierrez
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Environmental and Occupational Health, California State University, Northridge, CA 91330, USA
| | - Matteo Pellegrini
- Molecular, Cell and Developmental Biology Department, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Xia Yang
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA; Department of Integrative Biology and Physiology, University of California, Los Angeles, Los Angeles, CA 90095, USA; Bioinformatics Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA; Institute for Quantitative and Computational Biosciences, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Patrick Allard
- Molecular Toxicology Interdepartmental Program, University of California, Los Angeles, Los Angeles, CA 90095, USA; Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA 90095, USA; Institute for Society and Genetics, University of California, Los Angeles, Los Angeles, CA 90095, USA.
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116
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Fatma Karaman E, Caglayan M, Sancar-Bas S, Ozal-Coskun C, Arda-Pirincci P, Ozden S. Global and region-specific post-transcriptional and post-translational modifications of bisphenol A in human prostate cancer cells. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2019; 255:113318. [PMID: 31610501 DOI: 10.1016/j.envpol.2019.113318] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Revised: 09/10/2019] [Accepted: 09/27/2019] [Indexed: 06/10/2023]
Abstract
Bisphenol A (BPA), as synthetic monomer used in the production of polycarbonate plastic and epoxy resins, has endocrine disruptor properties and high risk on human health. Epigenetic alterations could act an important role in BPA-induced toxicity, but its mechanism has not been fully understood. We investigated the effects of BPA on gene expression of chromatin modifying enzymes, promoter methylation of tumor suppressor genes and histone modifications in human prostate carcinoma cells (PC-3). IC50 value of BPA was determined as 217 and 190 μM in PC-3 cells by MTT and NRU tests, respectively. We revealed an increase in global levels of 5-methylcytocine and 5-hydroxymethylcytocine at 10 μM of BPA for 96 h. We observed a significant increase on promoter DNA methylation and decrease on gene expression of p16 gene while no change was observed for Cyclin D2 and Rassf1. Significant changes were observed in global histone modifications (H3K9ac, H3K9me3, H3K27me3, and H4K20me3) in PC-3 cells. According to these results, we investigated wide-range epigenetic modifications using PCR arrays. After 96 h BPA exposure, chromatin modifying enzymes including KDM5B and NSD1 were significantly downregulated. Also, promoter methylation of tumor suppressor genes including BCR, GSTP1, LOX, MGMT, NEUROG1, PDLIM4, PTGS2, PYCARD, TIMP3, TSC2 and ZMYDN10 altered significantly. ChIP results showed that H3K9ac, H3K9me3 and H3K27me3 modifications on p16 gene showed significant increases after 1 and 10 μM of BPA exposure. In conclusion, epigenetic signatures such as DNA methylation and histone modifications could be proposed as molecular biomarkers of BPA-induced prostate cancer progression.
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Affiliation(s)
- Ecem Fatma Karaman
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey
| | - Mine Caglayan
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey
| | - Serap Sancar-Bas
- Department of Biology, Faculty of Science, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Cansu Ozal-Coskun
- Section of Biology, Institute of Graduate Studies in Sciences, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Pelin Arda-Pirincci
- Department of Biology, Faculty of Science, Istanbul University, 34134, Vezneciler, Istanbul, Turkey
| | - Sibel Ozden
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Istanbul University, 34116, Beyazit, Istanbul, Turkey.
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117
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Louka ML, Ramzy MM. Dysregulated long noncoding RNAs (PVT1 and EGOT) in clear cell renal cell carcinoma. Meta Gene 2019. [DOI: 10.1016/j.mgene.2019.100608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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118
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Santangeli S, Consales C, Pacchierotti F, Habibi HR, Carnevali O. Transgenerational effects of BPA on female reproduction. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 685:1294-1305. [PMID: 31272786 DOI: 10.1016/j.scitotenv.2019.06.029] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 05/31/2019] [Accepted: 06/02/2019] [Indexed: 06/09/2023]
Abstract
Bisphenol A (BPA) is an abundant environmental contaminant and studies have shown the presence of BPA in the urine of over 90% of population tested in Canada and USA. In addition to its reported harmful effects, there is concern for its transgenerational effects. For a compound to induce transgenerational effect, an epigenetic mark should be mitotically and meiotically stable without reprogramming in primordial germ cells and post fertilization embryos. In the present study, female zebrafish were treated with an environmental dose (20 μg/L) of BPA and then crossed with untreated males. To assess epigenetic effects, transcript levels of several genes involved in female reproduction were measured in adult and in 24 hpf embryos up to F3 generation. Exposure to BPA affected adult female fertility up to F2 generation. In F0, F1 and F2 ovaries transcript levels for several genes involved in reproduction, including esr, star, lhcgr and fshr were affected. To investigate epigenetic mechanisms of gene expression modulation, we studied promoter DNA methylation. Among genes involved in gonadal differentiation, amh transcript level was reduced in 24 hpf embryos, up to the F3 generation. Variation in amh transcript level was associated with hyper-methylation of its promoter and changes in H3K4me3/H3K27me3 enrichment, coherent with gene silencing. The findings provide evidence for transgenerational effects of BPA in zebrafish and demonstrate that amh is susceptible to stable epigenetic alterations. CAPSULE: Transgenerational effects of BPA on female reproductive physiology.
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Affiliation(s)
- Stefania Santangeli
- Dipartimento Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy.
| | - Claudia Consales
- Laboratory of Biosafety and Risk Assessment, Division of Health Protection Technologies, ENEA Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy.
| | - Francesca Pacchierotti
- Laboratory of Biosafety and Risk Assessment, Division of Health Protection Technologies, ENEA Casaccia Research Center, Via Anguillarese 301, 00123 Rome, Italy.
| | - Hamid R Habibi
- Department of Biological Sciences, University of Calgary, Calgary, Alberta, Canada.
| | - Oliana Carnevali
- Dipartimento Scienze della Vita e dell'Ambiente, Università Politecnica delle Marche, Via Brecce Bianche, 60131 Ancona, Italy; INBB Consorzio Interuniversitario di Biosistemi e Biostrutture, 00136 Roma, Italy.
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119
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Miura R, Araki A, Minatoya M, Miyake K, Chen ML, Kobayashi S, Miyashita C, Yamamoto J, Matsumura T, Ishizuka M, Kubota T, Kishi R. An epigenome-wide analysis of cord blood DNA methylation reveals sex-specific effect of exposure to bisphenol A. Sci Rep 2019; 9:12369. [PMID: 31451752 PMCID: PMC6710292 DOI: 10.1038/s41598-019-48916-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 08/15/2019] [Indexed: 12/11/2022] Open
Abstract
Exposure to bisphenol A (BPA) in utero is associated with adverse health outcome of the offspring. Differential DNA methylation at specific CpG sites may link BPA exposure to health impacts. We examined the association of prenatal BPA exposure with genome-wide DNA methylation changes in cord blood in 277 mother-child pairs in the Hokkaido Study on Environment and Children’s Health, using the Illumina HumanMethylation 450 BeadChip. We observed that a large portion of BPA-associated differentially methylated CpGs with p-value < 0.0001 was hypomethylated among all newborns (91%) and female infants (98%), as opposed to being hypermethylated (88%) among males. We found 27 and 16 CpGs with a false discovery rate (FDR) < 0.05 in the analyses for males and females, respectively. Genes annotated to FDR-corrected CpGs clustered into an interconnected genetic network among males, while they rarely exhibited any interactions in females. In contrast, none of the enrichment for gene ontology (GO) terms with FDR < 0.05 was observed for genes annotated to the male-specific CpGs with p < 0.0001, whereas the female-specific genes were significantly enriched for GO terms related to cell adhesion. Our epigenome-wide analysis of cord blood DNA methylation implies potential sex-specific epigenome responses to BPA exposure.
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Affiliation(s)
- Ryu Miura
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Atsuko Araki
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Machiko Minatoya
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Kunio Miyake
- Department of Health Sciences, Interdisciplinary Graduate School of Medicine and Engineering, University of Yamanashi, Chuo, Japan
| | - Mei-Lien Chen
- Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei, Taiwan
| | - Sumitaka Kobayashi
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Chihiro Miyashita
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan
| | - Jun Yamamoto
- Institute of Environmental Ecology, Idea Consultants, Inc., Shizuoka, Japan
| | - Toru Matsumura
- Institute of Environmental Ecology, Idea Consultants, Inc., Shizuoka, Japan
| | - Mayumi Ishizuka
- Department of Environmental Veterinary Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - Takeo Kubota
- Faculty of Child Studies, Seitoku University, Chiba, Japan
| | - Reiko Kishi
- Hokkaido University Center for Environmental and Health Sciences, Sapporo, Japan.
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Baken KA, Lambrechts N, Remy S, Mustieles V, Rodríguez-Carrillo A, Neophytou CM, Olea N, Schoeters G. A strategy to validate a selection of human effect biomarkers using adverse outcome pathways: Proof of concept for phthalates and reproductive effects. ENVIRONMENTAL RESEARCH 2019; 175:235-256. [PMID: 31146096 DOI: 10.1016/j.envres.2019.05.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 05/21/2023]
Abstract
Human biomonitoring measures the concentrations of environmental chemicals or their metabolites in body fluids or tissues. Complementing exposure biomarkers with mechanistically based effect biomarkers may further elucidate causal pathways between chemical exposure and adverse health outcomes. We combined information on effect biomarkers previously implemented in human observational studies with mechanisms of action reported in experimental studies and with information from published Adverse Outcome Pathways (AOPs), focusing on adverse reproductive effects of phthalate exposure. Phthalates constitute a group of chemicals that are ubiquitous in consumer products and have been related to a wide range of adverse health effects. As a result of a comprehensive literature search, we present an overview of effect biomarkers for reproductive toxicity that are substantiated by mechanistic information. The activation of several receptors, such as PPARα, PPARγ, and GR, may initiate events leading to impaired male and female fertility as well as other adverse effects of phthalate exposure. Therefore, these receptors appear as promising targets for the development of novel effect biomarkers. The proposed strategy connects the fields of epidemiology and toxicology and may strengthen the weight of evidence in observational studies that link chemical exposures to health outcomes.
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Affiliation(s)
- Kirsten A Baken
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium.
| | - Nathalie Lambrechts
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium
| | - Sylvie Remy
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Epidemiology and Social Medicine, University of Antwerp, Antwerp, Belgium
| | - Vicente Mustieles
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | | | - Christiana M Neophytou
- Department of Biological Sciences, School of Pure and Applied Sciences, University of Cyprus, Nicosia, Cyprus
| | - Nicolas Olea
- Biosanitary Research Institute of Granada (ibs.GRANADA), University Hospitals of Granada, Granada, Spain; Center for Biomedical Research (CIBM), University of Granada, Granada, Spain; Consortium for Biomedical Research in Epidemiology & Public Health (CIBERESP), Spain
| | - Greet Schoeters
- Unit Health, Flemish Institute for Technological Research (VITO NV), Mol, Belgium; Department of Biomedical Sciences, University of Antwerp, Antwerp, Belgium; Department of Environmental Medicine, Institute of Public Health, University of Southern Denmark, Odense, Denmark
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Chen H, Mao W, Shen Y, Feng W, Mao G, Zhao T, Yang L, Yang L, Meng C, Li Y, Wu X. Distribution, source, and environmental risk assessment of phthalate esters (PAEs) in water, suspended particulate matter, and sediment of a typical Yangtze River Delta City, China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:24609-24619. [PMID: 31236858 DOI: 10.1007/s11356-019-05259-y] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 04/22/2019] [Indexed: 06/09/2023]
Abstract
Phthalates (PAEs) in drinking water sources such as the Yangtze River in developing countries had aroused widespread concern. Here, the water, suspended particulate matter (SPM), and sediment samples were collected from 15 sites in wet and dry seasons in Zhenjiang, for the determination of six PAEs (DMP, DEP, DIBP, DBP, DEHP, and DOP) using the solid-phase extraction (SPE) or ultrasonic extraction coupled with gas chromatography-mass spectrometry (GC-MS). The total concentrations of six PAEs (Σ6PAEs) spanned a range of 2.65-39.31 μg L-1 in water, 1.97-34.10 μg g-1 in SPM, and 0.93-34.70 μg g-1 in sediment. The partition coefficients (Kd1) of PAEs in water and SPM phase ranged from 0.004 to 3.36 L g-1 in the wet season and from 0.12 to 2.84 L g-1 in the dry season. Kd2 of PAEs in water and sediment phase was 0.001-9.75 L g-1 in the wet season and 0.006-8.05 L g-1 in the dry season. The dominant PAEs were DIBP, DBP, and DEHP in water and SPM, DIBP, DEHP, and DOP in sediment. The concentration of DBP in water exceeded the China Surface Water Standard. The discharge of domestic sewage and industrial wastewater might be the main potential sources of PAEs. The risk quotient (RQ) method used for the risk assessment revealed that DBP (0.01 < RQ < 1) posed a medium risk, while DIBP and DEHP (RQ > 1) posed a high environmental risk in water, DIBP (RQ > 1) also showed a high risk in sediment.
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Affiliation(s)
- Hui Chen
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Wei Mao
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Yiqiu Shen
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Weiwei Feng
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Guanghua Mao
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Ting Zhao
- School of the Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Lanqin Yang
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Liuqing Yang
- School of the Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China
| | - Chunfeng Meng
- School of Material Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212003, People's Republic of China
| | - Yong Li
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, People's Republic of China
| | - Xiangyang Wu
- School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, 212013, People's Republic of China.
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Martínez-Ibarra A, Martínez-Razo LD, Vázquez-Martínez ER, Martínez-Cruz N, Flores-Ramírez R, García-Gómez E, López-López M, Ortega-González C, Camacho-Arroyo I, Cerbón M. Unhealthy Levels of Phthalates and Bisphenol A in Mexican Pregnant Women with Gestational Diabetes and Its Association to Altered Expression of miRNAs Involved with Metabolic Disease. Int J Mol Sci 2019; 20:ijms20133343. [PMID: 31284700 PMCID: PMC6650872 DOI: 10.3390/ijms20133343] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2019] [Revised: 06/03/2019] [Accepted: 06/03/2019] [Indexed: 02/06/2023] Open
Abstract
Several studies indicate that bisphenol A (BPA) and phthalates may have a role in the development of metabolic diseases using different molecular pathways, including epigenetic regulatory mechanisms. However, it is unclear whether exposure to these chemicals modifies serum levels of miRNAs associated with gestational diabetes mellitus (GDM) risk. In the present study, we evaluated the serum levels of miRNAs associated with GDM (miR-9-5p, miR-16-5p, miR-29a-3p and miR-330-3p) and urinary levels of phthalate metabolites (mono-n-butyl phthalate (MBP), mono-isobutyl phthalate (MiBP), mono-benzyl phthalate (MBzP) and mono(2-ethyl hexyl) phthalate (MEHP)) and bisphenol A in GDM patients and women without GDM during the second trimester of gestation. We observed higher levels of miR-9-5p, miR-29a-3p and miR-330-3p in sera of patients with GDM compared to non-diabetic subjects. Phthalates were detected in 97–100% of urine samples, while BPA only in 40%. Urinary MEHP and BPA concentrations were remarkably higher in both study groups compared to previously reported data. Unadjusted MEHP levels and adjusted BPA levels were higher in non-diabetics than in GDM patients (p = 0.03, p = 0.02). We found positive correlations between adjusted urinary MBzP levels and miR-16-5p expression levels (p < 0.05), adjusted MEHP concentrations and miR-29a-3p expression levels (p < 0.05). We also found negative correlations between unadjusted and adjusted MBP concentrations and miR-29a-3p expression levels (p < 0.0001, p < 0.05), unadjusted MiBP concentrations and miR-29a-3p expression levels (p < 0.01). Urinary MEHP levels reflect a striking exposure to di(2-ethylhexyl) phthalate (DEHP) in pregnant Mexican women. This study highlights the need for a regulatory strategy in the manufacture of several items containing endocrine disruptors in order to avoid involuntary ingestion of these compounds in the Mexican population.
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Affiliation(s)
- Alejandra Martínez-Ibarra
- Doctorado en Ciencias Biológicas y de la Salud, Universidad Autónoma Metropolitana, Ciudad de México 04960, México
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México
| | - Luis Daniel Martínez-Razo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México
| | - Edgar Ricardo Vázquez-Martínez
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México
| | - Nayeli Martínez-Cruz
- Coordinación del Servicio de Endocrinología, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Ciudad de México 11000, México
| | - Rogelio Flores-Ramírez
- Coordinación para la Innovación y Aplicación de la Ciencia y la Tecnología, Universidad Autónoma de San Luis Potosí, San Luis Potosí 78210, México
| | - Elizabeth García-Gómez
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México
| | - Marisol López-López
- Departamento de Sistemas Biológicos, Universidad Autónoma Metropolitana, Ciudad de México 04960, México
| | - Carlos Ortega-González
- Coordinación del Servicio de Endocrinología, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes", Ciudad de México 11000, México
| | - Ignacio Camacho-Arroyo
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México
| | - Marco Cerbón
- Unidad de Investigación en Reproducción Humana, Instituto Nacional de Perinatología "Isidro Espinosa de los Reyes" - Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de México 11000, México.
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Sakib S, Voigt A, Goldsmith T, Dobrinski I. Three-dimensional testicular organoids as novel in vitro models of testicular biology and toxicology. ENVIRONMENTAL EPIGENETICS 2019; 5:dvz011. [PMID: 31463083 PMCID: PMC6705190 DOI: 10.1093/eep/dvz011] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Revised: 06/06/2019] [Accepted: 07/03/2019] [Indexed: 05/05/2023]
Abstract
Organoids are three dimensional structures consisting of multiple cell types that recapitulate the cellular architecture and functionality of native organs. Over the last decade, the advent of organoid research has opened up many avenues for basic and translational studies. Following suit of other disciplines, research groups working in the field of male reproductive biology have started establishing and characterizing testicular organoids. The three-dimensional architectural and functional similarities of organoids to their tissue of origin facilitate study of complex cell interactions, tissue development and establishment of representative, scalable models for drug and toxicity screening. In this review, we discuss the current state of testicular organoid research, their advantages over conventional monolayer culture and their potential applications in the field of reproductive biology and toxicology.
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Affiliation(s)
- Sadman Sakib
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Anna Voigt
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Taylor Goldsmith
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
| | - Ina Dobrinski
- Biochemistry & Molecular Biology, Cumming School of Medicine, University of Calgary, Canada
- Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Canada
- Correspondence address. Department of Comparative Biology and Experimental Medicine, Faculty of Veterinary Medicine, University of Calgary, Room 404, Heritage Medical Research Building, 3300 Hospital Drive NW, Calgary, Alberta T2N 4N1, Canada. Tel: 4032106523; Fax: 4032108821; E-mail:
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Factors related to changes in the asthma male: female ratio by age in 403 Mexican counties. Ann Allergy Asthma Immunol 2019; 123:288-292.e1. [PMID: 31247302 DOI: 10.1016/j.anai.2019.06.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2019] [Revised: 04/02/2019] [Accepted: 06/17/2019] [Indexed: 12/27/2022]
Abstract
BACKGROUND Asthma is more frequent in males during childhood and in females after adolescence, which has been attributed to changes in sexual hormones levels. OBJECTIVE We explored changes of the asthma male: female ratio (AMFR) by age group in a large population (nationwide), and its ecological association (at county level) with some medical, geographical, or sociodemographic factors. METHODS Registries of the largest medical institution in Mexico (∼37.5 million subjects assigned to a family physician) were analyzed and the AMFR calculated using asthma incidences. RESULTS In boys, asthma incidence peaked at 0 to 4 years and progressively decreased, reaching a plateau in adulthood. In girls, asthma incidence showed a bimodal pattern, with maximal rates at 0 to 4 years old, and again at 50 to 54 years old. In the ecological analysis performed in more than 400 counties, the AMFR in adults (≥15 years old) inversely correlated with population density (r = -0.256) and altitude (r = -0.144), and directly correlated with acute respiratory tract infections (ARTI, r = 0.215), diabetes (r = 0.186), marginalization (r = 0.179), pneumonias (r = 0.166), and mean maximal temperature (r = 0.142), all with P < .01. In the multiple linear regression, only population density (P < .001) and ARTI (P = .006) remained statistically significant in the final model. CONCLUSION Asthma incidence in males and females did not match the expected sexual hormones variations, and other factors such as population density and ARTI also influenced the AMFR. These findings challenge the traditional belief that sexual hormones are major determinants of the AMFR.
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Sunman B, Yurdakök K, Kocer-Gumusel B, Özyüncü Ö, Akbıyık F, Balcı A, Özkemahlı G, Erkekoğlu P, Yurdakök M. Prenatal bisphenol a and phthalate exposure are risk factors for male reproductive system development and cord blood sex hormone levels. Reprod Toxicol 2019; 87:146-155. [PMID: 31170452 DOI: 10.1016/j.reprotox.2019.05.065] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 05/26/2019] [Accepted: 05/29/2019] [Indexed: 12/16/2022]
Abstract
Bisphenol A (BPA) and phthalates can adversely affect the fetal development. However, observational studies on the effects of these chemicals on fetal male reproductive system are still limited. A hundred of umbilical cord blood samples were analyzed for the levels of BPA, di-2-ethylhexyl phthalate (DEHP), mono-2-ethylhexyl phthalate (MEHP), and sex hormones. After birth, male newborns underwent physical examination that included measurements of anogenital distance, stretched penile length (SPL), and penile width. BPA, DEHP and MEHP levels were detectable in ≈99% of cord blood samples. In covariate-adjusted models, cord blood BPA levels were inversely associated with SPL of newborns and positively associated with cord blood estradiol levels. In addition, there was a significant inverse relationship between cord blood DEHP levels and anogenital distance index of newborn males. Our results suggest that in utero BPA and DEHP exposure exerted adverse effects on fetal male reproductive development and cord blood estradiol levels.
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Affiliation(s)
- Birce Sunman
- Department of Pediatrics, Gülhane Education and Research Hospital, Ankara, Turkey.
| | - Kadriye Yurdakök
- Department of Pediatrics, Social Pediatrics Unit, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Belma Kocer-Gumusel
- Department of Toxicology, Hacettepe University Faculty of Pharmacy, Ankara, Turkey; Department of Toxicology, Lokman Hekim University Faculty of Pharmacy, Ankara, Turkey
| | - Özgür Özyüncü
- Department of Obstetrics and Gynecology, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Filiz Akbıyık
- Department of Medical Biochemistry, Hacettepe University Faculty of Medicine, Ankara, Turkey
| | - Aylin Balcı
- Department of Toxicology, Hacettepe University Faculty of Pharmacy, Ankara, Turkey
| | - Gizem Özkemahlı
- Department of Toxicology, Hacettepe University Faculty of Pharmacy, Ankara, Turkey; Department of Toxicology, Binali Yildirim University Faculty of Pharmacy, Erzincan, Turkey
| | - Pınar Erkekoğlu
- Department of Toxicology, Hacettepe University Faculty of Pharmacy, Ankara, Turkey
| | - Murat Yurdakök
- Department of Pediatrics, Neonatology Unit, Hacettepe University Faculty of Medicine, Ankara, Turkey
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Kamai EM, McElrath TF, Ferguson KK. Fetal growth in environmental epidemiology: mechanisms, limitations, and a review of associations with biomarkers of non-persistent chemical exposures during pregnancy. Environ Health 2019; 18:43. [PMID: 31068204 PMCID: PMC6505101 DOI: 10.1186/s12940-019-0480-8] [Citation(s) in RCA: 71] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Accepted: 04/16/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Non-persistent chemicals, such as phthalates, environmental phenols, organophosphate pesticides, and others, are challenging to study because of their ubiquity in the environment, diverse exposure routes, and high temporal variability of biomarkers. Nonetheless, there is interest in understanding how gestational exposure to these chemicals may affect fetal growth, as perturbations to normal fetal growth are related to a plethora of adverse health outcomes in childhood and adulthood. METHODS The purpose of this review is to describe the state of the science on this topic. We searched PubMed for studies that included both 1) biomarkers of non-persistent chemicals collected during pregnancy and 2) fetal growth outcomes measured at birth (e.g., birth weight) or by ultrasound in utero (e.g., estimated fetal weight). RESULTS The bulk of the literature we found uses biomarkers measured at a single time point in pregnancy and birth weight as the primary measure of fetal growth. There is a small, but growing, body of research that uses ultrasound measures to assess fetal growth during pregnancy. In addition to summarizing the findings of the publications we identified, we describe inconsistencies in methodology, areas for improvement, and gaps in existing knowledge that can be targeted for improvement in future work. This literature is characterized by variability in methodology, likely contributing to the inconsistency of results reported. We further discuss maternal, placental, and fetal pathways by which these classes of chemicals may affect fetal growth. CONCLUSIONS To improve understanding of how everyday chemical exposures affect fetal growth, and ultimately lifelong health outcomes, mechanisms of toxicant action should be considered alongside improved study designs for future hypothesis-driven research.
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Affiliation(s)
- Elizabeth M. Kamai
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina at Chapel Hill, 135 Dauer Drive, 2101 McGavran-Greenberg Hall, CB #7435, Chapel Hill, NC 27599 USA
| | - Thomas F. McElrath
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115 USA
| | - Kelly K. Ferguson
- Epidemiology Branch, Division of Intramural Research, National Institute of Environmental Health Sciences, 111 TW Alexander Drive, Research Triangle Park, NC 27709 USA
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Zhang Q, Chen XZ, Huang X, Wang M, Wu J. The association between prenatal exposure to phthalates and cognition and neurobehavior of children-evidence from birth cohorts. Neurotoxicology 2019; 73:199-212. [PMID: 31004626 DOI: 10.1016/j.neuro.2019.04.007] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 04/12/2019] [Accepted: 04/15/2019] [Indexed: 01/12/2023]
Abstract
BACKGROUND Phthalate have been detected widely in the environment; while several studies have indicated that prenatal phthalate exposure has adverse effects on neurodevelopment, the results were inconsistent. OBJECTIVE We aimed to determine the current research status of the relationship between prenatal exposure to different types of phthalate and cognition and behavioral development in children. We conducted a systematic review to evaluate the current state of knowledge. METHODS We systematically searched PubMed, Web of Science, and EMBASE electronic databases up to May 2018 with manual searches of the references of retrieved publications and relevant reviews. Only birth cohort studies that reported on the association between phthalate exposure and cognitive or behavioral development were included in this review. We evaluated the risk of bias for each of the included studies using a modified instrument based on the Cochrane Collaboration's "Risk of Bias" tool. RESULT Twenty-six birth cohort studies met our inclusion criteria, nine of which investigated the impact of phthalate exposure during pregnancy on cognition, 13 on neurobehavior, and 4 on both cognition and neurobehavior. However, ten articles reported that the effect of prenatal exposure to phthalates on cognitive development was statistically significant, 15 articles reported that the effect of prenatal exposure to phthalates on neurobehavior was statistically significant. The effect of prenatal phthalate exposure on neurodevelopment differed according to sex, but the results are inconsistent, for instance, among the five studies investigating the association between mental development index (MDI) and Mono-n-butyl phthalate (MnBP), two of them showed a significantly decreasing MDI scores with increasing concentrations of MnBP among girls, but among boys one study showed the inverse association, another showed the positive association. CONCLUSION Di(2-ethylhexyl) phthalate, dibutyl phthalate, butyl-benzyl phthalate and di-ethyl phthalate exposure during pregnancy was associated with lower cognitive scores and worse behavior in offspring, and sex-specific effects on cognitive, psychomotor, and behavioral development were identified, especially the impact of phthalate exposure on neurobehavior in boys.
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Affiliation(s)
- Qi Zhang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xin-Zhen Chen
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Xin Huang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Min Wang
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China
| | - Jing Wu
- Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China; Department of Epidemiology and Biostatistics, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People's Republic of China.
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Ahern TP, Broe A, Lash TL, Cronin-Fenton DP, Ulrichsen SP, Christiansen PM, Cole BF, Tamimi RM, Sørensen HT, Damkier P. Phthalate Exposure and Breast Cancer Incidence: A Danish Nationwide Cohort Study. J Clin Oncol 2019; 37:1800-1809. [PMID: 30995175 DOI: 10.1200/jco.18.02202] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE Phthalate exposure is ubiquitous and especially high among users of drug products formulated with phthalates. Some phthalates mimic estradiol and may promote breast cancer. Existing epidemiologic studies on this topic are small, mostly not prospective, and have given inconsistent results. We estimated associations between longitudinal phthalate exposures and breast cancer risk in a Danish nationwide cohort, using redeemed prescriptions for phthalate-containing drug products to measure exposure. METHODS We ascertained the phthalate content of drugs marketed in Denmark using an internal Danish Medicines Agency ingredient database. We enrolled a Danish nationwide cohort of 1.12 million women at risk for a first cancer diagnosis on January 1, 2005. By combining drug ingredient data with the Danish National Prescription registry, we characterized annual, cumulative phthalate exposure through redeemed prescriptions. We then fit multivariable Cox regression models to estimate associations between phthalate exposures and incident invasive breast carcinoma according to tumor estrogen receptor status. RESULTS Over 9.99 million woman-years of follow-up, most phthalate exposures were not associated with breast cancer incidence. High-level dibutyl phthalate exposure (≥ 10,000 cumulative mg) was associated with an approximately two-fold increase in the rate of estrogen receptor-positive breast cancer (hazard ratio, 1.9; 95% CI, 1.1 to 3.5), consistent with in vitro evidence for an estrogenic effect of this compound. Lower levels of dibutyl phthalate exposure were not associated with breast cancer incidence. CONCLUSION Our results suggest that women should avoid high-level exposure to dibutyl phthalate, such as through long-term treatment with pharmaceuticals formulated with dibutyl phthalate.
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Affiliation(s)
| | - Anne Broe
- 2 University of Southern Denmark, Odense, Denmark.,3 Odense University Hospital, Odense, Denmark
| | - Timothy L Lash
- 4 Emory University, Atlanta, GA.,5 Aarhus University Hospital/Randers Regional Hospital, Aarhus, Denmark
| | | | | | | | | | - Rulla M Tamimi
- 6 Brigham and Women's Hospital, Boston, MA.,7 Harvard T.H. Chan School of Public Health, Boston, MA
| | | | - Per Damkier
- 2 University of Southern Denmark, Odense, Denmark.,3 Odense University Hospital, Odense, Denmark
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Gutiérrez-García AK, Flores-Kelly JM, Ortiz-Rodríguez T, Kalixto-Sánchez MA, De León-Rodríguez A. Phthalates affect the in vitro expansion of human hematopoietic stem cell. Cytotechnology 2019; 71:553-561. [PMID: 30715687 PMCID: PMC6465380 DOI: 10.1007/s10616-019-00300-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2018] [Accepted: 01/17/2019] [Indexed: 12/17/2022] Open
Abstract
Phthalates are esters of phthalic acid used industrially as plastic additives, however, these are not covalently bound to the polymer matrix and therefore can be released to the environment. The aim of this study was to evaluate the effect of four phthalates: dibutyl phthalate (DBP), benzyl butyl phthalate (BBP), diethyl phthalate (DEP) and diethylhexyl phthalate (DEHP) on the in vitro expansion of human hematopoietic cells from umbilical cord blood. For this, 0.5 × 106 cells/mL were exposure to concentrations ranging from 0.1 to 100 μg/mL and the total cell expansion was determined after 14 days of culture in IMDM-cytokines medium. The control cultures attained 1.31 ± 0.21 × 106 cell/mL, whereas the cultures exposed to DBP, BBP and DEHP showed a reduction from 23 to 81%, 17 to 69% and 15 to 93.5%, respectively. DEP did not affect the total cell expansion. The most significant decrease on total cell expansion was observed at 0.1 μg/mL DBP, 100 μg/mL BBP and 10 μg/mL DEHP (p < 0.05). Additionally, the effect of these compounds on the expansion of hematopoietic progenitors was analyzed by clonogenic assays as colony forming units (CFU). The CFU decreased considerably compared with respect to the control cultures. The reduction was 74.6 and 99.1% at 10 and 100 μg/mL DBP respectively, whereas 100 μg/mL BBP and 100 μg/mL DEHP reduced the CFU expansion in 97.1% and 81%, respectively. Cultures exposed to DEP did not show significant differences. The results demonstrate the toxicity of DBP, BBP and DEHP on the human hematopoietic stem cells.
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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, CP 78216, San Luis Potosí, SLP, Mexico
| | - José M Flores-Kelly
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4ª Sección, CP 78216, San Luis Potosí, SLP, Mexico
| | - Tomás Ortiz-Rodríguez
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4ª Sección, CP 78216, San Luis Potosí, SLP, Mexico
| | - Marco Antonio Kalixto-Sánchez
- Hospital General del ISSSTE, Carlos Diez Gutiérrez 915, Col. Julian Carrillo, CP 78340, San Luis Potosí, SLP, Mexico
| | - Antonio De León-Rodríguez
- División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica, A.C., Camino a la Presa San José 2055, Col. Lomas 4ª Sección, CP 78216, San Luis Potosí, SLP, Mexico.
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Nowak K, Jabłońska E, Ratajczak-Wrona W. Immunomodulatory effects of synthetic endocrine disrupting chemicals on the development and functions of human immune cells. ENVIRONMENT INTERNATIONAL 2019; 125:350-364. [PMID: 30743143 DOI: 10.1016/j.envint.2019.01.078] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Revised: 01/27/2019] [Accepted: 01/29/2019] [Indexed: 05/22/2023]
Abstract
Endocrine disrupting chemicals (EDCs) are added to food, cosmetics, plastic packages, and children's toys and have thus become an integral part of the human environment. In the last decade, there has been increasing interest in the effect of EDCs on human health, including their impact on the immune system. So far, researchers have proved that EDCs (e.g. bisphenols, phthalates, triclosan, phenols, propanil, tetrachlorodibenzo-p-dioxin, diethylstilbestrol, tributyltin (TBT), and parabens) affect the development, functions, and lifespan of immune cells (e.g., monocytes, neutrophils, mast cells, eosinophils, lymphocytes, dendritic cells, and natural killers). In this review, we have summarized the current knowledge of the multivariable influence of EDCs on immune cells and underlined the novel approach to EDC studies, including dose-dependent effects and low-dose effects. We discuss critically the possible relationship between exposure to EDCs and immunity related diseases (e.g. allergy, asthma, diabetes, and lupus). Moreover, based on the literature, we construct a model of possible mechanisms of EDC action on immune cells at cellular, molecular, and epigenetic levels.
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Affiliation(s)
- Karolina Nowak
- Department of Immunology, Medical University of Bialystok, Poland.
| | - Ewa Jabłońska
- Department of Immunology, Medical University of Bialystok, Poland
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131
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Al-Saleh I, Coskun S, Al-Doush I, Al-Rajudi T, Abduljabbar M, Al-Rouqi R, Palawan H, Al-Hassan S. The relationships between urinary phthalate metabolites, reproductive hormones and semen parameters in men attending in vitro fertilization clinic. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 658:982-995. [PMID: 30678022 DOI: 10.1016/j.scitotenv.2018.12.261] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 11/01/2018] [Accepted: 12/17/2018] [Indexed: 06/09/2023]
Abstract
Evidence from previous studies has shown that phthalates may play a role in male reproductive function; however, results are still inconclusive, and the mechanism remains unclear. In this study, we first assessed whether exposure to phthalates is associated with altered reproductive hormones and semen parameters in 599 men attending an in vitro fertilization clinic. Secondly, we evaluated whether reproductive hormones could play a mediating role in the association between phthalates and sperm parameters. Eight phthalate metabolites were measured in two different spot urine samples: mono‑n‑butyl phthalate, mono-isobutyl phthalate (MiBP), monoethyl phthalate (MEP), monobenzyl phthalate, and four oxidative metabolites of di‑(2‑ethylhexyl) phthalate (DEHP) [i.e., mono‑(2‑ethylhexyl) phthalate (MEHP), mono‑(2‑ethyl‑5‑hydroxyhexyl) phthalate (MEHHP), mono‑(2‑ethyl‑5‑oxohexyl) phthalate (MEOHP), and mono‑(2‑ethyl‑5‑carboxypentyl) phthalate (MECPP)]. Semen parameters (concentration, volume, motility, and morphology) and reproductive hormones, i.e., follicle-stimulating hormone (FSH), luteinizing hormone (LH), thyroid-stimulating hormone, estradiol (E2), testosterone (TEST) and prolactin (PROL) were also determined and considered the main study outcomes. Separate multivariate linear regression was used to assess associations between levels of each urinary phthalate metabolite, molar sum of DEHP metabolites (∑DEHP), percentage of MEHP to ∑DEHP (%MEHP), and each outcome (natural log-transformed). Inverse associations were observed between TEST and MiBP (β = -0.099), FSH and MEHHP (β = -0.087), and PROL and MEOHP (β = -0.102), while a positive relationship was seen between E2 and MEP (β = 0.098). %MEHP was associated positively with FSH (β = 0.118) and LH (β = 0.099), but negatively with TEST/LH (β = -0.086) and TEST/E2 (β = -0.109). Sperm concentration was associated positively with MECPP (β = 0.131), MEHHP (β = 0.117), MEOHP (β = 0.107) and ∑DEHP (β = 0.111), but negatively with %MEHP (β = -0.135). All p-values were <0.05. Sobel's test indicated that FSH mediated significantly up to 60% of the positive relationship between sperm concentration and MEHHP, while FSH and LH mediated respectively 15 and 12% of the inverse association between sperm concentration and %MEHP. Further research on this topic is warranted.
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Affiliation(s)
- Iman Al-Saleh
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia.
| | - Serdar Coskun
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Inaam Al-Doush
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Tahreer Al-Rajudi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Mai Abduljabbar
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Reem Al-Rouqi
- Environmental Health Program, Research Centre, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Hemraz Palawan
- Department of Pathology and Laboratory Medicine, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
| | - Saad Al-Hassan
- Reproductive Medicine Unit, Department of Obstetrics & Gynecology, King Faisal Specialist Hospital and Research Centre, PO Box: 3354, Riyadh 11211, Saudi Arabia
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132
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Rosenfeld CS, Cooke PS. Endocrine disruption through membrane estrogen receptors and novel pathways leading to rapid toxicological and epigenetic effects. J Steroid Biochem Mol Biol 2019; 187:106-117. [PMID: 30465854 PMCID: PMC6370520 DOI: 10.1016/j.jsbmb.2018.11.007] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 10/31/2018] [Accepted: 11/18/2018] [Indexed: 01/08/2023]
Abstract
Estrogen binding to estrogen receptors (ESR) triggers signaling cascades within cells. Historically, a major emphasis has been characterizing estrogen-induced genomic actions resulting from binding to nuclear estrogen receptor 1 (nESR1). However, recent evidence indicates the first receptors estrogens encounter as they enter a cell, membrane ESR1 (mESR1), also play crucial roles. Membrane and nuclear ESR are derived from the same transcripts but the former are directed to the membrane via palmitoylation. Binding and activation of mESR1 leads to rapid fluctuations in cAMP and Ca+2 and stimulation of protein kinase pathways. Endocrine disrupting chemicals (EDC) that mimic 17β-estradiol can signal through mESR1 and elicit non-genomic effects. Most current EDC studies have focused on genomic actions via nESR1. However, increasing number of studies have begun to examine potential EDC effects mediated through mESR1, and some EDC might have higher potency for signaling through mESR1 than nESR1. The notion that such chemicals might also affect mESR1 signaling via palmitoylation and depalmitoylation pathways has also begun to gain currency. Recent development of transgenic mice that lack either mESR1 or nESR1, while retaining functional ESR1 in the other compartment, will allow more precise in vivo approaches to determine EDC effects through nESR1 and/or mESR1. It is increasingly becoming apparent in this quickly evolving field that EDC directly affect mESR and estrogen signaling, but such chemicals can also affect proportion of ESR reaching the membrane. Future EDC studies should be designed to consider the full range of effects through mESR alone and in combination with nESR.
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Affiliation(s)
- Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO, 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO, 65211, USA; Thompson Center for Autism and Neurobehavioral Disorders, Columbia, MO, 65211, USA.
| | - Paul S Cooke
- Department of Physiological Sciences, University of Florida, Gainesville, FL, 32610, USA.
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Ventura C, Zappia CD, Lasagna M, Pavicic W, Richard S, Bolzan AD, Monczor F, Núñez M, Cocca C. Effects of the pesticide chlorpyrifos on breast cancer disease. Implication of epigenetic mechanisms. J Steroid Biochem Mol Biol 2019; 186:96-104. [PMID: 30290214 DOI: 10.1016/j.jsbmb.2018.09.021] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Revised: 09/27/2018] [Accepted: 09/29/2018] [Indexed: 11/21/2022]
Abstract
Chlorpyrifos (CPF) is an organophosphorus pesticide used for agricultural pest control all over the world. We have previously demonstrated that environmental concentrations of this pesticide alter mammary gland histological structure and hormonal balance in rats chronically exposed. In this work, we analyzed the effects of CPF on mammary tumors development. Our results demonstrated that CPF increases tumor incidence and reduces latency of NMU-induced mammary tumors. Although no changes were observed in tumor growth rate, we found a reduced steroid hormone receptor expression in the tumors of animals exposed to the pesticide. Moreover, we analyzed the role of epigenetic mechanisms in CPF effects. Our results indicated that CPF alters HDAC1 mRNA expression in mammary gland, although no changes were observed in DNA methylation. In summary, we demonstrate that the exposure to CPF promotes mammary tumors development with a reduced steroid receptors expression. It has also been found that CPF affects HDAC1 mRNA levels in mammary tissue pointing that CPF may act as a breast cancer risk factor.
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Affiliation(s)
- C Ventura
- Laboratorio de Radioisótopos, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina; Laboratorio de Citogenética y Mutagénesis, IMBICE (CONICET La Plata-UNLP-CICPBA), Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo. La Plata, Buenos Aires, Argentina
| | - C D Zappia
- Laboratorio de Farmacología de Receptores, ININFA, UBA-CONICET, Argentina
| | - M Lasagna
- Laboratorio de Radioisótopos, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - W Pavicic
- Laboratorio de Citogenética y Mutagénesis, IMBICE (CONICET La Plata-UNLP-CICPBA), Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo. La Plata, Buenos Aires, Argentina
| | - S Richard
- Laboratorio de Citogenética y Mutagénesis, IMBICE (CONICET La Plata-UNLP-CICPBA), Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo. La Plata, Buenos Aires, Argentina
| | - A D Bolzan
- Laboratorio de Citogenética y Mutagénesis, IMBICE (CONICET La Plata-UNLP-CICPBA), Universidad Nacional de La Plata, Facultad de Ciencias Naturales y Museo. La Plata, Buenos Aires, Argentina
| | - F Monczor
- Laboratorio de Farmacología de Receptores, ININFA, UBA-CONICET, Argentina
| | - M Núñez
- Laboratorio de Radioisótopos, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina
| | - C Cocca
- Laboratorio de Radioisótopos, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Ciudad Autónoma de Buenos Aires, Argentina; Instituto de Química y Fisicoquímica Biológicas "Prof. Alejandro C. Paladini", IQUIFIB UBA-CONICET, Ciudad Autónoma de Buenos Aires, Argentina.
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134
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Huang Y, Wu C, Ye Y, Zeng J, Zhu J, Li Y, Wang W, Zhang W, Chen Y, Xie H, Zhang H, Liu J. The Increase of ROS Caused by the Interference of DEHP with JNK/p38/p53 Pathway as the Reason for Hepatotoxicity. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E356. [PMID: 30691201 PMCID: PMC6388128 DOI: 10.3390/ijerph16030356] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Revised: 01/22/2019] [Accepted: 01/22/2019] [Indexed: 01/06/2023]
Abstract
As the most commonly used plasticizer, Di-(2-ethylhexyl)-phthalate (DEHP) exists everywhere in the environment due to the widespread use of polyvinyl chloride (PVC) in human life, and it is also a recognized environmental pollutant. Studies have proved the hepatotoxicity of DEHP, however the mechanism has not been adequately explored, especially the role of the reactive oxygen species (ROS) in it. In the present study, 21 day-old ICR mice were administered DEHP with dose of 0, 125, 250, and 375 mg/kg/day for 28 days by intragastrical gavage. After contamination, histopathology displayed that liver tissue were damaged mildly with the effect of DEHP; a significant increase of the serum liver function index (including aspartate transaminase (AST) and alanine transaminase (ALT)) were observed. Additionally, the level of lipid peroxidation markedly rise, especially ROS and malondialdehyde (MDA), but the activation of superoxide dismutase (SOD) was obviously decreased in mice liver. In addition, DEHP promoted the phosphorylation of JNK and p38MAPK proteins in mice liver, as well as increased the expression of p53 protein and decreased the level of DNA methylation in the p53 gene promoter region. These results indicated that the hepatotoxicity of mice caused by DEHP may be through activating the JNK/p38MAPK/p53 signaling pathway and further promoting the generation of ROS to induce lipid peroxidation in liver, and the role of DNA methylation may be inevitable.
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Affiliation(s)
- Yuanyuan Huang
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Chuancheng Wu
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Youbin Ye
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Jingwen Zeng
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Jianlin Zhu
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Yuchen Li
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Wenxiang Wang
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Xueyan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Wenchang Zhang
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Yiqin Chen
- Department of Health Inspection and Quarantine, School of Public Health, Fujian Medical University, Xueyan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Hongyuan Xie
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Hongmei Zhang
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
| | - Jin Liu
- Department of Preventive Medicine, Fujian Provincial Key Laboratory of Environment factors and Cancer, Key Laboratory of Environment and Health, School of Public Health, Fujian Medical University, Xueyuan Road No.1, Minhou County, Fuzhou 350108, China.
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135
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Abstract
Importance Temporal global trends of sperm quality remain a matter of debate. Objective The aim of this study was to present a comprehensive review of studies reporting on sperm quality counts, summarize the main end points, and assess the main reasons for potential discrepancies. Evidence Acquisition An evidence-based review of PubMed and Scopus databases was performed regarding studies reporting on modification of sperm quality counts, independently of study character, study language, or date. Results Since the meta-analysis of Carlsen et al in 1992 (Br Med J 1992;305:609-613) that suggested an annual decline in sperm count of 1%, several reports confirmed the decline in sperm quality, whereas others disproved them, suggesting a slight increase or absence of change in sperm count. Such controversies may be attributed to geographical and time-related variability in sperm values and also to several confounding factors that influence the semen parameters. Intrinsic weaknesses of the studies include heterogeneity of subjects recruited, lack of adjustment for confounding factors, and samples that do not always represent the general population. Conclusions No consensus exists on whether sperm counts actually decrease because studies' results are often controversial or inconclusive with methodological deficiencies. More prospective, large-scale, population based studies are needed in order to provide sound evidence of possible global trends in sperm count.
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136
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Epigenetic and Neurological Impairments Associated with Early Life Exposure to Persistent Organic Pollutants. Int J Genomics 2019; 2019:2085496. [PMID: 30733955 PMCID: PMC6348822 DOI: 10.1155/2019/2085496] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2018] [Revised: 09/14/2018] [Accepted: 10/31/2018] [Indexed: 12/31/2022] Open
Abstract
The incidence of neurodevelopmental and neurodegenerative diseases worldwide has dramatically increased over the last decades. Although the aetiology remains uncertain, evidence is now growing that exposure to persistent organic pollutants during sensitive neurodevelopmental periods such as early life may be a strong risk factor, predisposing the individual to disease development later in life. Epidemiological studies have associated environmentally persistent organic pollutant exposure to brain disorders including neuropathies, cognitive, motor, and sensory impairments; neurodevelopmental disorders such as autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD); and neurodegenerative diseases including Alzheimer's disease, Parkinson's disease, and amyotrophic lateral sclerosis (ALS). In many ways, this expands the classical “Developmental Origins of Health and Disease” paradigm to include exposure to pollutants. This model has been refined over the years to give the current “three-hit” model that considers the individual's genetic factors as a first “hit.” It has an immediate interaction with the early-life exposome (including persistent organic pollutants) that can be considered to be a second “hit.” Together, these first two “hits” produce a quiescent or latent phenotype, most probably encoded in the epigenome, which has become susceptible to a third environmental “hit” in later life. It is only after the third “hit” that the increased risk of disease symptoms is crystallised. However, if the individual is exposed to a different environment in later life, they would be expected to remain healthy. In this review, we examine the effect of exposure to persistent organic pollutants and particulate matters in early life and the relationship to subsequent neurodevelopmental and neurodegenerative disorders. The roles of those environmental factors which may affect epigenetic DNA methylation and therefore influence normal neurodevelopment are then evaluated.
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137
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Nilsen E, Smalling KL, Ahrens L, Gros M, Miglioranza KSB, Picó Y, Schoenfuss HL. Critical review: Grand challenges in assessing the adverse effects of contaminants of emerging concern on aquatic food webs. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY 2019; 38:46-60. [PMID: 30294805 DOI: 10.1002/etc.4290] [Citation(s) in RCA: 98] [Impact Index Per Article: 19.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Revised: 09/24/2018] [Accepted: 10/03/2018] [Indexed: 05/24/2023]
Abstract
Much progress has been made in the past few decades in understanding the sources, transport, fate, and biological effects of contaminants of emerging concern (CECs) in aquatic ecosystems. Despite these advancements, significant obstacles still prevent comprehensive assessments of the environmental risks associated with the presence of CECs. Many of these obstacles center around the extrapolation of effects of single chemicals observed in the laboratory or effects found in individual organisms or species in the field to impacts of multiple stressors on aquatic food webs. In the present review, we identify 5 challenges that must be addressed to promote studies of CECs from singular exposure events to multispecies aquatic food web interactions. There needs to be: 1) more detailed information on the complexity of mixtures of CECs in the aquatic environment, 2) a greater understanding of the sublethal effects of CECs on a wide range of aquatic organisms, 3) an ascertaining of the biological consequences of variable duration CEC exposures within and across generations in aquatic species, 4) a linkage of multiple stressors with CEC exposure in aquatic systems, and 5) a documenting of the trophic consequences of CEC exposure across aquatic food webs. We examine the current literature to show how these challenges can be addressed to fill knowledge gaps. Environ Toxicol Chem 2019;38:46-60. © 2018 SETAC.
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Affiliation(s)
- Elena Nilsen
- US Geological Survey, Oregon Water Science Center, Portland, Oregon, USA
| | - Kelly L Smalling
- US Geological Survey, New Jersey Water Science Center, Lawrenceville, New Jersey, USA
| | - Lutz Ahrens
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
| | - Meritxell Gros
- Department of Aquatic Sciences and Assessment, Swedish University of Agricultural Sciences, Uppsala, Sweden
- Catalan Institute for Water Research, Girona, Spain
| | - Karina S B Miglioranza
- Laboratory of Ecotoxicology and Environmental Pollution, Mar del Plata University, Mar del Plata, Argentina
| | - Yolanda Picó
- Environmental and Food Safety Research Group, Center of Research on Desertification (CIDe), Faculty of Pharmacy, University of Valencia, Valencia, Spain
| | - Heiko L Schoenfuss
- Aquatic Toxicology Laboratory, St. Cloud State University, St. Cloud, Minnesota, USA
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138
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Zhang JN, Zhang RQ, Liu JC, Li L, Shen W, Sun XF. Di (2-ethylhexyl) Phthalate Exposure Impairs the microRNAs Expression Profile During Primordial Follicle Assembly. Front Endocrinol (Lausanne) 2019; 10:877. [PMID: 31920986 PMCID: PMC6923199 DOI: 10.3389/fendo.2019.00877] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 11/29/2019] [Indexed: 12/28/2022] Open
Abstract
This research was performed to estimate the potential effects of Di (2-ethylhexyl) phthalate (DEHP) on changes of ovarian miRNA expression profile during mouse primordial follicle assembly using miRNAs-seq analysis. The ovaries of newborn mice were collected and in vitro cultured with different concentration of DEHP for 72 h. Then they were prepared for miRNAs-seq analysis. The results indicated that DEHP exposure altered ovarian miRNA expression profile of newborn mice. Eighteen differentially expressed miRNAs were screened after 100 μM DEHP exposure. The target mRNAs of differentially expressed miRNAs were predicted and further analyzed through gene ontology (GO) enrichment analysis and pathway enrichment analysis. Our results showed that the differentially expressed miRNAs from DEHP exposure can regulate ovarian development by targeting mRNAs involved in MAPK, mTOR, FoxO signaling pathways. Three miRNAs of miR-32-5p, miR-19a-3p, and miR-141-3p were randomly selected from the differentially expressed miRNAs to quantify their expression level by miRNA qRT-PCR. The results of qRT-PCR and miRNA-seq were consistent. Considering one of its target gene PTEN of miR-19a-3p and the decreased level of pAKT and increased Bax/Bcl-2 under DEHP exposure, we speculated that the altered expression of miR-19a-3p by DEHP exposure affected mouse primordial follicle assembly via PI3K/AKT1/mTOR signaling pathway. Epigenetic changes are one of the most important targets of toxicant exposure. The effects of DEHP exposure on microRNA (one of the epigenetic regulators) expression profile were uncovered to enrich the research on relationship of epigenetics and toxicant exposure.
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139
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Abstract
The field of Epigenetics represents the science which helps us understand the influence life has on genetic function. Research has shown that what we do, what we are exposed to, and the internal and external environments have significant influence on the output of our genes. In this article, the reader will understand how alterations in the DNA explain how the genetic output us changed as a result of exposures to life.
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140
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Bisphenol A: What lies beneath its induced diabetes and the epigenetic modulation? Life Sci 2018; 214:136-144. [DOI: 10.1016/j.lfs.2018.10.044] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2018] [Revised: 10/12/2018] [Accepted: 10/21/2018] [Indexed: 12/11/2022]
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141
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Lee SW, Chatterjee N, Im JE, Yoon D, Kim S, Choi J. Integrated approach of eco-epigenetics and eco-metabolomics on the stress response of bisphenol-A exposure in the aquatic midge Chironomus riparius. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 163:111-116. [PMID: 30041127 DOI: 10.1016/j.ecoenv.2018.06.084] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Revised: 06/26/2018] [Accepted: 06/27/2018] [Indexed: 05/18/2023]
Abstract
The stress response mechanisms of Bisphenol A (BPA), an endocrine disrupting compound, remain to be elucidated. In this study, we explored the effects of BPA on the non-biting midge Chironomus riparius through basic ecotoxicity assays, DNA damage (comet assay), eco-epigenetics (global DNA and histone methylations) and non-targeted global metabolomics (NMR based) approaches. The reproduction failure, increase in DNA damage, global DNA hyper-methylation, and increased global histone modification (H3K36) status were evident due to BPA exposure at 10% lethal concentration (LC10: 1 mg/L, based on 48 h acute toxicity). Moreover, non-targeted global metabolomics followed by pathway analysis identified alterations of energy metabolism, amino acids, and methionine metabolisms etc. Most importantly, we found a potential cross-talk between altered epigenetics and metabolites, such as, increase in methionine and o-phosphocholine metabolites corresponds with the phenomena of global hyper-methylation in DNA and H3K36 mark. Overall, our results suggests that the crosstalk of global metabolomics and epigenetic modification was fundamental of the underlying mechanisms in BPA-induced stress response in C. riparius.
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Affiliation(s)
- Si-Won Lee
- School of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea
| | - Nivedita Chatterjee
- School of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea
| | - Jeong-Eun Im
- School of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea
| | - Dahye Yoon
- Department of Chemistry, Center for Proteom Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Republic of Korea
| | - Suhkmann Kim
- Department of Chemistry, Center for Proteom Biophysics and Chemistry Institute for Functional Materials, Pusan National University, Busan 609-735, Republic of Korea
| | - Jinhee Choi
- School of Environmental Engineering, University of Seoul, Seoul 130-743, Republic of Korea.
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142
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Maertens A, Tran V, Kleensang A, Hartung T. Weighted Gene Correlation Network Analysis (WGCNA) Reveals Novel Transcription Factors Associated With Bisphenol A Dose-Response. Front Genet 2018; 9:508. [PMID: 30483308 PMCID: PMC6240694 DOI: 10.3389/fgene.2018.00508] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/10/2018] [Indexed: 11/13/2022] Open
Abstract
Despite Bisphenol-A (BPA) being subject to extensive study, a thorough understanding of molecular mechanism remains elusive. Here we show that using weighted gene correlation network analysis (WGCNA), which takes advantage of a graph theoretical approach to understanding correlations amongst genes and grouping genes into modules that typically have co-ordinated biological functions and regulatory mechanisms, that despite some commonality in altered genes, there is minimal overlap between BPA and estrogen in terms of network topology. We confirmed previous findings that ZNF217 and TFAP2C are involved in the estrogen pathway, and are implicated in BPA as well, although for BPA they appear to be active in the absence of canonical estrogen-receptor driven gene expression. Furthermore, our study suggested that PADI4 and RACK7/ZMYNDB8 may be involved in the overlap in gene expression between estradiol and BPA. Lastly, we demonstrated that even at low doses there are unique transcription factors that appear to be driving the biology of BPA, such as SREBF1. Overall, our data is consistent with other reports that BPA leads to subtle gene changes rather than profound aberrations of a conserved estrogen signaling (or other) pathways.
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Affiliation(s)
- Alexandra Maertens
- Center for Alternatives to Animal Testing, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Vy Tran
- Center for Alternatives to Animal Testing, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Andre Kleensang
- Center for Alternatives to Animal Testing, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
| | - Thomas Hartung
- Center for Alternatives to Animal Testing, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States.,Center for Alternatives to Animal Testing - Europe, University of Konstanz, Konstanz, Germany.,Doerenkamp-Zbinden Professor and Chair for Evidence-Based Toxicology, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, MD, United States
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143
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Sidorkiewicz I, Czerniecki J, Jarząbek K, Zbucka-Krętowska M, Wołczyński S. Cellular, transcriptomic and methylome effects of individual and combined exposure to BPA, BPF, BPS on mouse spermatocyte GC-2 cell line. Toxicol Appl Pharmacol 2018; 359:1-11. [DOI: 10.1016/j.taap.2018.09.006] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 08/28/2018] [Accepted: 09/05/2018] [Indexed: 12/13/2022]
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144
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Dobrzyńska MM, Gajowik A, Jankowska-Steifer EA, Radzikowska J, Tyrkiel EJ. Reproductive and developmental F1 toxicity following exposure of pubescent F0 male mice to bisphenol A alone and in a combination with X-rays irradiation. Toxicology 2018; 410:142-151. [PMID: 30321649 DOI: 10.1016/j.tox.2018.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 09/11/2018] [Accepted: 10/11/2018] [Indexed: 10/28/2022]
Abstract
Exposure to environmental toxicants may affect reproduction and development of subsequent generations. This study was aimed at determining the male-mediated F1 effects induced following 8-weeks of subchronic exposure of F0 male mice to bisphenol A (BPA) alone and in a combination with X-rays irradiation (IR) started during their puberty. 4.5 weeks old F0 male mice were exposed to BPA dissolved in ethyl alcohol and diluted in drinking water at the following doses: 5 mg/kg bw, 10 mg/kg bw, 20 mg/kg bw or irradiated with X-rays (0.05 Gy) or exposed to a combination of low doses of both agents (0.05 Gy + 5 mg/kg bw BPA). Immediately after the end of the 8 weeks exposure F0 males were caged with two unexposed females each. Three quarters of the mated females from each group were sacrificed 1 day before expected parturition for examination of prenatal development of the offspring. The remainder of the females from each group were allowed to deliver and rear litters. Pups of exposed males were monitored for postnatal development for 8 weeks. At 8-9 weeks of age 6-8 males from each group of F1 generation were sacrificed to determine sperm count and quality. The current results, compared to the earlier results, showed that exposure of pubescent males to BPA alone or in combination with irradiation may be more damaging to their offspring than the exposure of adult males. The exposure of pubescent males to BPA alone and in combination with irradiation significantly increased the frequency of abnormal skeletons of surviving fetuses, increased the percent of mortality of pups in the F1 generation, reduced the sperm motility of F1 males and may induce obesity. Additionally, the combined BPA and irradiation exposure reduced the number of total and live implantations, whereas the exposure to BPA alone disturbed the male:female sex ratio. The above results may be caused by genetic or by epigenetic mechanisms. Limitation of use of products including BPA, especially by children and teenagers, is strongly recommended.
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Affiliation(s)
- Małgorzata M Dobrzyńska
- Department of Radiation Hygiene and Radiobiology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791, Warsaw, Poland.
| | - Aneta Gajowik
- Department of Radiation Hygiene and Radiobiology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791, Warsaw, Poland
| | - Ewa A Jankowska-Steifer
- Department of Histology and Embryology, Medical University of Warsaw, 5 Chałubińskiego Street, 02-004, Warsaw, Poland
| | - Joanna Radzikowska
- Department of Radiation Hygiene and Radiobiology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791, Warsaw, Poland
| | - Ewa J Tyrkiel
- Department of Radiation Hygiene and Radiobiology, National Institute of Public Health - National Institute of Hygiene, 24 Chocimska Street, 00-791, Warsaw, Poland
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145
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Abruzzese GA, Crisosto N, De Grava Kempinas W, Sotomayor-Zárate R. Developmental programming of the female neuroendocrine system by steroids. J Neuroendocrinol 2018; 30:e12632. [PMID: 29968423 DOI: 10.1111/jne.12632] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2017] [Revised: 06/03/2018] [Accepted: 07/01/2018] [Indexed: 12/30/2022]
Abstract
Developmental programming refers to processes that occur during early life that may have long-term consequences, modulating adult health and disease. Complex diseases, such as diabetes, cancer and cardiovascular disease, have a high prevalence in different populations, are multifactorial, and may have a strong environmental component. The environment interacts with organisms, affecting their behaviour, morphology and physiology. This interaction may induce permanent or long-term changes, and organisms may be more susceptible to environmental factors during certain developmental stages, such as the prenatal and early postnatal periods. Several factors have been identified as responsible for inducing the reprogramming of various reproductive and nonreproductive tissues. Among them, both natural and synthetic steroids, such as endocrine disruptors, are known to have either detrimental or positive effects on organisms depending on the dose of exposure, stage of development and biological sexual background. The present review focuses on the action of steroids and endocrine disruptors as agents involved in developmental programming and on their modulation and effects on female neuroendocrine functions.
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Affiliation(s)
- Giselle Adriana Abruzzese
- Laboratorio de Fisio-patología Ovárica, Centro de Estudios Farmacológicos y Botánicos (CEFYBO), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Facultad de Medicina, Universidad de Buenos Aires (UBA), Buenos Aires, Argentina
| | - Nicolás Crisosto
- Endocrinology and Metabolism Laboratory West Division, School of Medicine, University of Chile, Santiago, Chile
- Endocrinology Unit, Clínica Las Condes, Santiago, Chile
| | - Wilma De Grava Kempinas
- Laboratory of Reproductive and Developmental Biology and Toxicology, Department of Morphology, Institute of Biosciences, Universidade Estadual Paulista-UNESP, Botucatu, Sao Paulo, Brazil
| | - Ramón Sotomayor-Zárate
- Laboratorio de Neuroquímica y Neurofarmacología, Centro de Neurobiología y Fisiopatología Integrativa, Instituto de Fisiología, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
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146
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Scarano WR, Pinho CF, Pissinatti L, Gonçalves BF, Mendes LO, Campos SG. Cell junctions in the prostate: an overview about the effects of Endocrine Disrupting Chemicals (EDCS) in different experimental models. Reprod Toxicol 2018; 81:147-154. [DOI: 10.1016/j.reprotox.2018.08.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Revised: 07/30/2018] [Accepted: 08/02/2018] [Indexed: 12/20/2022]
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147
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Lymperi S, Giwercman A. Endocrine disruptors and testicular function. Metabolism 2018; 86:79-90. [PMID: 29605435 DOI: 10.1016/j.metabol.2018.03.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2017] [Revised: 03/19/2018] [Accepted: 03/22/2018] [Indexed: 02/07/2023]
Abstract
Despite concerns of the scientific community regarding the adverse effects of human exposure to exogenous man-made chemical substances or mixtures that interfere with normal hormonal balance, the so called "endocrine disruptors (EDs)", their production has been increased during the last few decades. EDs' extensive use has been implicated in the increasing incidence of male reproductive disorders including poor semen quality, testicular malignancies and congenital developmental defects such as hypospadias and cryptorchidism. Several animal studies have demonstrated that exposure to EDs during fetal, neonatal and adult life has deleterious consequences on male reproductive system; however, the evidence on humans remains ambiguous. The complexity of their mode of action, the differential effect according to the developmental stage that exposure occurs, the latency from exposure and the influence of the genetic background in the manifestation of their toxic effects are all responsible factors for the contradictory outcomes. Furthermore, the heterogeneity in the published human studies has hampered agreement in the field. Interventional studies to establish causality would be desirable, but unfortunately the nature of the field excludes this possibility. Therefore, future studies based on standardized guidelines are necessary, in order to estimate human health risks and implement policies to limit public exposure.
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Affiliation(s)
- Stefania Lymperi
- Unit of Reproductive Endocrinology, First Department of Obstetrics and Gynecology, Aristotle University of Thessaloniki, Thessaloniki, Greece.
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148
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Zuccarello P, Oliveri Conti G, Cavallaro F, Copat C, Cristaldi A, Fiore M, Ferrante M. Implication of dietary phthalates in breast cancer. A systematic review. Food Chem Toxicol 2018; 118:667-674. [DOI: 10.1016/j.fct.2018.06.011] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/12/2018] [Accepted: 06/06/2018] [Indexed: 01/08/2023]
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149
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Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent. WATER 2018. [DOI: 10.3390/w10080999] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Waste/reclaimed irrigation water has been promoted due to water shortages in arid and semi-arid areas. However, this process may be one of the sources of phthalate esters (PAEs) in agricultural soils, and the potential risks of PAEs for soil ecosystems and human health have attracted considerable attention. A two-year (from October 2014 to October 2016) field experiment was conducted to assess the contamination risk of PAEs from reclaimed irrigation water in winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) fields on the North China Plain. Three types of irrigation water quality were arranged for each variety, including reclaimed water, groundwater, and a mixture of reclaimed water and groundwater (1:1, v/v). The results indicate that the concentrations of the 6 PAEs in topsoil ranged from 2.79 to 5.34 mg/kg at the time of crop harvest. There was no significant effect of reclaimed irrigation water on the concentrations of PAEs in the soil. Di-n-butyl phthalate (DnBP) and di (2-ethylhexyl) phthalate (DEHP) were the most abundant contaminants in all soil samples, accounting for 43.2%~68.7% and 27.1%~48.6%, respectively, of the 6 PAEs. The levels of dimethyl phthalate (DMP) and DnBP in all soil samples exceeded the allowable soil concentrations, but the levels were far below the recommended soil cleanup objectives. The grain yields of winter wheat and summer maize ranged from 4.35 to 7.1 t/ha and 1.03 to 6.46 t/ha, respectively. There were no significant effects of reclaimed water on the growth characteristics and grain yield of winter wheat (p > 0.05); however, the effect of reclaimed irrigation water on summer maize was influenced by climate. The concentrations of the 6 PAEs in wheat grain and maize grain ranged from 1.03 to 4.05 mg/kg and from 0.37 to 3.29 mg/kg, respectively. For the same variety, there was no significant difference in the concentrations of the 6 PAEs in cereal grains among different treatments (p > 0.05). DEHP and DnBP were the most abundant components in most crop samples, accounting for 31.6%~77.9% and 21.1%~64.7%, respectively, of the 6 PAEs. The concentrations of the PAEs, DnBP and DEHP in cereal grains were lower than those in the reference doses. The BCFs of the 6 PAEs and of each PAE in cereal grains were 0.43~1.25 and 0.33~35.75, respectively. The BCFs of butyl benzyl phthalate (BBP) were the highest (1.41~35.75), followed by DMP and DEHP. There were almost no significant differences in the BCFs of each PAE among the three treatments. The total carcinogenic risks of PAEs were 2.82 × 10−5 for adults and 1.81 × 10−5 for children. The total non-carcinogenic risks of PAEs were 3.37 × 10−1 for adults and 7.98 × 10−1 for children. DHEP was the dominant contributor to both risks, and the intake of cereals was the main exposure pathway for the two risks. In conclusion, there were no significant effects of reclaimed irrigation water on the concentrations of PAEs in soil and cereal grains compared with groundwater irrigation, and the human health risks were within the acceptable range. Long-term studies are needed to evaluate the long-term effects of reclaimed irrigation water on the contamination risk posed by PAEs.
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150
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Stem Cells as Potential Targets of Polyphenols in Multiple Sclerosis and Alzheimer's Disease. BIOMED RESEARCH INTERNATIONAL 2018; 2018:1483791. [PMID: 30112360 PMCID: PMC6077677 DOI: 10.1155/2018/1483791] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 06/19/2018] [Indexed: 12/16/2022]
Abstract
Alzheimer's disease (AD) and multiple sclerosis are major neurodegenerative diseases, which are characterized by the accumulation of abnormal pathogenic proteins due to oxidative stress, mitochondrial dysfunction, impaired autophagy, and pathogens, leading to neurodegeneration and behavioral deficits. Herein, we reviewed the utility of plant polyphenols in regulating proliferation and differentiation of stem cells for inducing brain self-repair in AD and multiple sclerosis. Firstly, we discussed the genetic, physiological, and environmental factors involved in the pathophysiology of both the disorders. Next, we reviewed various stem cell therapies available and how they have proved useful in animal models of AD and multiple sclerosis. Lastly, we discussed how polyphenols utilize the potential of stem cells, either complementing their therapeutic effects or stimulating endogenous and exogenous neurogenesis, against these diseases. We suggest that polyphenols could be a potential candidate for stem cell therapy against neurodegenerative disorders.
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