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Zhang X, Bold T, Zhang W, Zhao Q, Li Y, Zhang J, Lu L, Ji X, Zhang L, Jin Y, Tang J. Spatio-temporal distribution of cadmium levels in Chinese population and its potential risk factors. Heliyon 2024; 10:e28879. [PMID: 38596075 PMCID: PMC11002678 DOI: 10.1016/j.heliyon.2024.e28879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 03/22/2024] [Accepted: 03/26/2024] [Indexed: 04/11/2024] Open
Abstract
Cadmium (Cd), a ubiquitous heavy metal, exists in numerous environmental matrices and has severe adverse effects on various human organs and tissues. This research evaluates blood and urine Cd levels in the Chinese population through data mining using Monte Carlo simulation (MCS). A total of 168 scientific studies (120 on urine and 48 on blood) published between January 1980 and December 2020, reflecting a population of 109,743 individuals in China, were included in the study. The results indicate that the blood and urine Cd levels in the Chinese population exhibited a peak from 1990 to 1995 and remained stable after 1995, averaging 1.21 μg/L of blood Cd (BCd) and 0.61 μg/L of urine Cd (UCd). The spatial trend of Cd levels varied significantly. Shandong, Zhejiang, Heilongjiang, and Guangdong provinces were identified as the top provinces with high Cd levels, which were related to factors such as tobacco sales, E-waste amounts, and contaminated rice. Additionally, the study highlights that BCd concentrations are highest among preschool-aged individuals, whereas school-age and adolescent groups exhibit the lowest levels. However, no significant difference existed among the different age groups. Males showed significantly higher Cd levels than females in the general population. Moreover, exposure to smoking, drinking, and staple food preferences had an impact on Cd levels. Furthermore, this comprehensive study, using biological monitoring and data mining, provides valuable information on Cd pollution levels in the Chinese population. It presents a statistical analysis that can aid decision-makers in implementing effective measures to control potential Cd pollution and improve the health of vulnerable populations.
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Affiliation(s)
- Xinglin Zhang
- Clinical Medical Research Center for Women and Children Diseases, Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250001, China
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Tsendmaa Bold
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Wenjing Zhang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Qianwen Zhao
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yanting Li
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jianzhong Zhang
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Lin Lu
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Xiaoya Ji
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Lin Zhang
- Clinical Medical Research Center for Women and Children Diseases, Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250001, China
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Yuan Jin
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
| | - Jinglong Tang
- Clinical Medical Research Center for Women and Children Diseases, Shandong Provincial Maternal and Child Health Care Hospital Affiliated to Qingdao University, Jinan 250001, China
- Department of Occupational and Environmental Health, School of Public Health, Qingdao University, Qingdao 266071, China
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Granitzer S, Widhalm R, Atteneder S, Fernandez MF, Mustieles V, Zeisler H, Hengstschläger M, Gundacker C. BDNF and KISS-1 Levels in Maternal Serum, Umbilical Cord, and Placenta: The Potential Role of Maternal Levels as Effect Biomarker. EXPOSURE AND HEALTH 2023:1-17. [PMID: 37360514 PMCID: PMC10225291 DOI: 10.1007/s12403-023-00565-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/27/2023] [Accepted: 05/09/2023] [Indexed: 06/28/2023]
Abstract
Brain-derived neurotrophic factor (BDNF) and kisspeptin-1 (KISS-1) regulate placental development and fetal growth. The predictive value of maternal serum BDNF and KISS-1 concentrations for placental and umbilical cord levels has not yet been explored. The influence of prenatal lead (Pb) and cadmium (Cd) exposure and maternal iron status on BDNF and KISS-1 levels is also unclarified and of concern. In a pilot cross-sectional study with 65 mother-newborn pairs, we analyzed maternal and cord serum levels of pro-BDNF, mature BDNF, and KISS-1, BDNF, and KISS-1 gene expression in placenta, Pb and Cd in maternal and umbilical cord blood (erythrocytes), and placenta. We conducted a series of in vitro experiments using human primary trophoblast cells (hTCs) and BeWo cells to verify main findings of the epidemiological analysis. Strong and consistent correlations were observed between maternal serum levels of pro-BDNF, mature BDNF, and KISS-1 and corresponding levels in umbilical serum and placental tissue. Maternal red blood cell Pb levels were inversely correlated with serum and placental KISS-1 levels. Lower expression and release of KISS-1 was also observed in Pb-exposed BeWo cells. In vitro Pb exposure also reduced cellular BDNF levels. Cd-treated BeWo cells showed increased pro-BDNF levels. Low maternal iron status was positively associated with low BDNF levels. Iron-deficient hTCs and BeWo cells showed a consistent decrease in the release of mature BDNF. The correlations between maternal BDNF and KISS-1 levels, placental gene expression, and umbilical cord serum levels, respectively, indicate the strong potential of maternal serum as predictive matrix for BDNF and KISS-1 levels in placentas and fetal sera. Pb exposure and iron status modulate BDNF and KISS-1 levels, but a clear direction of modulations was not evident. The associations need to be confirmed in a larger sample and validated in terms of placental and neurodevelopmental function. Supplementary Information The online version contains supplementary material available at 10.1007/s12403-023-00565-w.
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Affiliation(s)
- Sebastian Granitzer
- Institute of Medical Genetics, Medical University of Vienna, Waehringer Strasse 10, 1090 Vienna, Austria
- Exposome Austria, Research Infrastructure and National EIRENE Hub, Vienna, Austria
| | - Raimund Widhalm
- Institute of Medical Genetics, Medical University of Vienna, Waehringer Strasse 10, 1090 Vienna, Austria
- Exposome Austria, Research Infrastructure and National EIRENE Hub, Vienna, Austria
| | - Simon Atteneder
- Institute of Medical Genetics, Medical University of Vienna, Waehringer Strasse 10, 1090 Vienna, Austria
| | - Mariana F. Fernandez
- Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria (Ibs.GRANADA), Granada, Spain
- Consortium for Research and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain
| | - Vicente Mustieles
- Center for Biomedical Research (CIBM), University of Granada, Granada, Spain
- Instituto de Investigación Biosanitaria (Ibs.GRANADA), Granada, Spain
- Consortium for Research and Public Health (CIBERESP), Instituto de Salud Carlos III, Madrid, Spain
| | - Harald Zeisler
- Department of Obstetrics and Gynecology, Medical University of Vienna, Vienna, Austria
| | - Markus Hengstschläger
- Institute of Medical Genetics, Medical University of Vienna, Waehringer Strasse 10, 1090 Vienna, Austria
| | - Claudia Gundacker
- Institute of Medical Genetics, Medical University of Vienna, Waehringer Strasse 10, 1090 Vienna, Austria
- Exposome Austria, Research Infrastructure and National EIRENE Hub, Vienna, Austria
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Wang WJ, Lu X, Li Z, Peng K, Zhan P, Fu L, Wang Y, Zhao H, Wang H, Xu DX, Tan ZX. Early-life cadmium exposure elevates susceptibility to allergic asthma in ovalbumin-sensitized and challenged mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 255:114799. [PMID: 36933479 DOI: 10.1016/j.ecoenv.2023.114799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 01/28/2023] [Accepted: 03/15/2023] [Indexed: 06/18/2023]
Abstract
Increasing evidence have demonstrated that early-life exposure to environmental toxicants elevates risk of allergic asthma. Cadmium (Cd) is widely present in the environment. The purposes of this study were to evaluate the impact of early-life Cd exposure on susceptibility to ovalbumin (OVA)-evoked allergic asthma. Newly weaned mice were subjected to a low concentration of CdCl2 (1 mg/L) by drinking water for 5 consecutive weeks. Penh value, an index of airway obstruction, was increased in OVA-stimulated and challenged pups. Abundant inflammatory cells were observed in the lung of OVA-exposed pups. Goblet cell hyperplasia and mucus secretion were shown in the airway of OVA-stimulated and challenged pups. Early-life Cd exposure exacerbated OVA-evoked airway hyperreactivity, Goblet cell hyperplasia and mucus secretion. The in vitro experiments showed that mucoprotein gene MUC5AC mRNA was upregulated in Cd-exposed bronchial epithelial cells. Mechanistically, endoplasmic reticulum (ER) stress-related molecules GRP78, p-eIF2α, CHOP, p-IRE1α and spliced XBP-1 (sXBP-1) were elevated in Cd-subjected bronchial epithelial cells. The blockade of ER stress, using chemical inhibitor 4-PBA or sXBP-1 siRNA interference, attenuated Cd-induced MUC5AC upregulation in bronchial epithelial cells. These results indicate that early-life Cd exposure aggravates OVA-induced allergic asthma partially through inducing ER stress in bronchial epithelial cells.
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Affiliation(s)
- Wen-Jing Wang
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Xue Lu
- Department of Toxicology, Anhui Medical University, Hefei, China
| | - Zhao Li
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Kun Peng
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Ping Zhan
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Lin Fu
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Yan Wang
- Department of Toxicology, Anhui Medical University, Hefei, China
| | - Hui Zhao
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Hua Wang
- Department of Toxicology, Anhui Medical University, Hefei, China
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei, China.
| | - Zhu-Xia Tan
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China.
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Fisher M, Marro L, Arbuckle TE, Potter BK, Little J, Weiler H, Morisset AS, Lanphear B, Oulhote Y, Braun JM, Kumarathasan P, Walker M, Borghese MM, Ashley-Martin J, Shutt R, Fraser WD. Association between toxic metals, vitamin D and preterm birth in the Maternal-Infant research on environmental chemicals study. Paediatr Perinat Epidemiol 2023. [PMID: 36864001 DOI: 10.1111/ppe.12962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
BACKGROUND Toxic metals, like lead, are risk factors for preterm birth (PTB), but few studies have examined low levels found in most Canadians. Vitamin D, which may have antioxidant activity, protects against PTB. OBJECTIVES In this study, we investigated the impact of toxic metals (lead, mercury, cadmium and arsenic) on PTB and examined if maternal plasma vitamin D concentrations modify these associations. METHODS We investigated whether concentrations of metals in whole blood measured in early and late pregnancy were associated with PTB (<37 weeks) and spontaneous PTB in 1851 live births from the Maternal-Infant Research on Environmental Chemicals Study using discrete time survival analysis. We also investigated whether the risk of PTB was modified by first-trimester plasma 25-hydroxyvitamin D (25OHD) concentrations. RESULTS Of 1851 live births, 6.1% (n = 113) were PTBs and 4.9% (n = 89) were spontaneous PTB. A 1 μg/dL increase in blood lead concentrations during pregnancy was associated with an increased risk of PTB (relative risk [RR] 1.48, 95% confidence interval [CI] 1.00, 2.20) and spontaneous PTB (RR 1.71, 95% CI 1.13, 2.60). The risk was higher in women with insufficient vitamin D concentrations (25OHD <50 nmol/L) for both PTB (RR 2.42, 95% CI 1.01, 5.79) and spontaneous PTB (RR 3.04, 95% CI 1.15, 8.04). However, an interaction on the additive scale was not present. Arsenic was associated with a higher risk of PTB (RR 1.10, 95% CI 1.02, 1.19) and spontaneous PTB (RR 1.11, 95% CI 1.03, 1.20) per 1 μg/L. CONCLUSIONS Gestational exposure to low levels of lead and arsenic may increase the risk of PTB and spontaneous PTB; individuals with insufficient vitamin D may be more susceptible to the adverse effects of lead. Given our relatively small number of cases, we encourage testing of this hypothesis in other cohorts, especially those with vitamin D-deficient populations.
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Affiliation(s)
- Mandy Fisher
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada.,University of Ottawa, School of Epidemiology and Public Health (SEPH), Ottawa, Ontario, Canada
| | - Leonora Marro
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Tye E Arbuckle
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Beth K Potter
- University of Ottawa, School of Epidemiology and Public Health (SEPH), Ottawa, Ontario, Canada
| | - Julian Little
- University of Ottawa, School of Epidemiology and Public Health (SEPH), Ottawa, Ontario, Canada
| | - Hope Weiler
- Nutrition Research Division, Health Products and Food Branch, Health Canada, Ottawa, Ontario, Canada
| | | | - Bruce Lanphear
- Simon Fraser University. Vancouver, British Columbia Canada, Vancouver, British Columbia, Canada
| | - Youssef Oulhote
- Department of Epidemiology and Biostatistics, School of Public Health and Health Sciences, University of Massachusetts Amherst, Boston, Massachusetts, USA
| | - Joseph M Braun
- Department of Epidemiology, Brown University, Providence, Rhode Island, USA
| | | | - Mark Walker
- The Ottawa Hospital Research Institute, Ottawa, Ontario, Canada
| | - Michael M Borghese
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Jillian Ashley-Martin
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - Robin Shutt
- Environmental Health Science and Research Bureau, Health Canada, Ottawa, Ontario, Canada
| | - William D Fraser
- Centre de Recherche du CHUS, and Department of Obstetrics and gynecology, University of Sherbrooke, Sherbrooke, Québec, Canada
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5
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Phillippe M. Telomeres, oxidative stress, and timing for spontaneous term and preterm labor. Am J Obstet Gynecol 2022; 227:148-162. [PMID: 35460626 DOI: 10.1016/j.ajog.2022.04.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 04/03/2022] [Accepted: 04/12/2022] [Indexed: 11/26/2022]
Abstract
Telomeres are nucleoprotein complexes located at the distal ends of chromosomes. In adults, progressive telomere shortening occurs throughout the lifetime and is thought to contribute to progressive aging, physiological senescence, multiorgan dysfunction, and ultimately, death. As discussed in this review, multiple lines of evidence provide support for the biological plausibility that a telomere-based clock mechanism also determines the length of gestation, leading to the onset of labor (parturition). After telomere expansion at the beginning of pregnancy, the telomere lengths in the gestational tissues (ie, the placenta and fetal membranes) progressively shorten throughout the remainder of pregnancy. The rate of telomere shortening can be accelerated by conditions that affect the mother and result in oxidative stress. Preterm births in the United States are associated with multiple risk factors that are linked with increased oxidative stress. Antioxidant vitamins (ie, vitamins E and C) mitigate the effects of oxidative stress and delay or prevent telomere shortening. Clinical trials with vitamins E and C and with multivitamins started during the periconception period have been associated with reduced rates of preterm births. In the United States, African-American women have a 2-3-fold higher rate of preterm birth. African-American women have multiple risk factors for premature birth, all of which are distinct and potentially additive with regard to epigenetic telomere shortening. The "weathering effect" is the hypothesis to explain the increased rates of chronic illness, disabilities, and early death observed in African-Americans. With regard to pregnancy, accelerated weathering with the associated telomere shortening in the gestational tissues would not only explain the preterm birth disparity but could also explain why highly educated, affluent African-American women continue to have an increased rate of preterm birth. These studies suggest that the racial disparities in preterm birth are potentially mediated by telomere shortening produced by lifetime or even generational exposure to the effects of systemic racism and socioeconomic marginalization. In conclusion, this review presents multiple lines of evidence supporting a novel hypothesis regarding the biological clock mechanism that determines the length of pregnancy, and it opens the possibility of new approaches to prevent or reduce the rate of spontaneous preterm birth.
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6
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Asefi Y, Gohari Mahmoudabad A, Habibian Sezavar A, Mirshahvaladi S, Abyadeh M, Abyareh M. Association between maternal cadmium exposure and preterm birth: a meta-analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:628-637. [PMID: 32633623 DOI: 10.1080/09603123.2020.1789947] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The association between Cadmium and the risk of preterm birth (PTB) has remained controversial. A number of studies found a positive correlation between maternal Cd exposure and PTB; however, there are conflicting reports about this correlation. Therefore, herein we performed this meta-analysis to examine the association between maternal Cd exposure and the risk of PTB.A systematic search was conducted through PubMed, Scopus, Embase and OpenGrey from inception to May 2020 to find all eligible studies. Odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to examine this correlation. A random-effects model was applied in this meta-analysis due to significant statistical heterogeneity among included studies.Overall, 10 eligible studies met the inclusion criteria and were included in our analysis, and results of the present meta-analysis indicated that maternal cadmium exposure is associated with the risk of PTB (OR = 1.32; 95% CI = 1.08-1.61).This meta-analysis suggests that maternal Cd exposure might be associated with the risk of PTB. Yet, large prospective studies from different ethnic populations which consider other influencing parameters are still required to confirm this finding.
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Affiliation(s)
- Yaser Asefi
- Department of Genetics, Islamic Azad University, Ahar, Iran
| | - Arezoo Gohari Mahmoudabad
- Department of Medical Nanotechnology, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran
| | - Ahmad Habibian Sezavar
- Department of Toxicology & Pharmacology, Faculty of Pharmacy, Tehran University of Medical Sciences (TUMS), Tehran, Iran
| | - Shahab Mirshahvaladi
- Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Morteza Abyadeh
- Department of Molecular Systems Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mostafa Abyareh
- Department of Environment, Faculty of Natural Resources, Yazd University, Yazd, Iran
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Li J, Lin S, Wu J, Li Y, Shang X, Pei L. Spatial variation and association between maternal chemical fertilizer exposure and preterm birth in a rural area in Northern China. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:19460-19472. [PMID: 34716895 DOI: 10.1007/s11356-021-17124-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 10/16/2021] [Indexed: 06/13/2023]
Abstract
Whether maternal macro-environmental chemical fertilizer exposure has an association with the risk of preterm birth remains unclear. This study aimed to investigate the association between maternal exposure to chemical fertilizer during pregnancy and the risk of preterm birth. A total of 13,861 births, including 402 preterm birth from 313 villages in Pingding County, Shanxi Province, China, were analyzed to explore spatial variations of preterm birth risks at the village level. Spatial variations of preterm birth were visualized and tested with Disease Mapping, Moran's I and G* Statistic. The spatial zero-inflated negative binomial model was used to evaluate the incidence rate ratio (IRR) of preterm birth in different chemical fertilizer consumption levels at the village level. A population-based case-control study was conducted including 153 preterm births cases and 204 controls at the household level. The two-level logistic regression model was performed to estimate the association between risks of preterm birth and maternal exposure to chemical fertilizer after adjusting confounding factors. The findings indicated a remarkably clustering effect in relative risks of preterm birth and identified a high-risk clustering region of preterm birth from the south-central to the southwest and a low-risk clustering region in the northern Pingding county. The results of the spatial zero-inflated negative binomial model showed that the risk of preterm birth in the villages with chemical fertilizer consumption≥100 tons was 2.82 (95% CI: 1.50-5.57) times higher than those with <50 tons. Maternal exposure to chemical fertilizer ≥100 tons at village level was associated with an increased risk of preterm birth (aOR 2.14, 95%CI: 1.18-3.96), compared with exposure <50 tons after adjusting for confounding variables. The findings suggests that chemical fertilizers deserve more attention as a potential risk factor of preterm birth.
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Affiliation(s)
- Jiajia Li
- Institute of Population Research/China Center on Population Health and development, Peking University, Beijing, 100871, China
| | - Shiqi Lin
- Institute of Population Research/China Center on Population Health and development, Peking University, Beijing, 100871, China
| | - Jilei Wu
- Institute of Population Research/China Center on Population Health and development, Peking University, Beijing, 100871, China
| | - Yu Li
- Department of Andrology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, 210002, China
| | - Xuejun Shang
- Department of Andrology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, 210002, China.
| | - Lijun Pei
- Institute of Population Research/China Center on Population Health and development, Peking University, Beijing, 100871, China.
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Zhu HL, Dai LM, Xiong YW, Shi XT, Liu WB, Fu YT, Zhou GX, Zhang S, Gao L, Zhang C, Zhao LL, Xu XF, Huang YC, Xu DX, Wang H. Gestational exposure to environmental cadmium induces placental apoptosis and fetal growth restriction via Parkin-modulated MCL-1 degradation. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127268. [PMID: 34583167 DOI: 10.1016/j.jhazmat.2021.127268] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/02/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
Heavy metal cadmium (Cd), a classical environmental pollutant, causes placental apoptosis and fetal growth restriction (FGR), whereby the mechanism remains unclear. Here, our human case-control study firstly showed that there was a positive association of Parkin mitochondrial translocation, MCL-1 reduction, placental apoptosis, and all-cause FGR. Subsequently, Cd was administered to establish in vitro and in vivo models of placental apoptosis or FGR. Our models demonstrated that Parkin mitochondrial translocation was observed in Cd-administrated placental trophoblasts. Meaningfully, Parkin siRNA (siR) dramatically mitigated Cd-triggered apoptosis in placental trophoblasts. Mdivi-1 (M-1), an inhibitor for Parkin mitochondrial translocation, mitigated Cd-induced apoptosis in placental trophoblasts, which further ameliorated the effect of attenuated placental sizes in Cd-exposed mice. Furthermore, the interaction of MCL-1 with Parkin or Ub in Cd-stimulated cells was stronger than that in controls. MG132, an inhibitor for proteasome, abolished MCL-1 degradation in Cd-stimulated cells. Importantly, Parkin siR and M-1 memorably abolished the ubiquitin-dependent degradation of MCL-1 in placental trophoblasts. Interestingly, mito-TEMPO and melatonin, two mitochondria-targeted antioxidants, obviously rescued Cd-caused mitochondrial membrane potential (MMP) decrease, Parkin mitochondrial translocation, MCL-1 degradation, and apoptosis in placental trophoblasts. In conclusion, cadmium induces placental apoptosis and FGR via mtROS-mediated Parkin-modulated degradation of MCL-1.
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Affiliation(s)
- Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Li-Min Dai
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xue-Ting Shi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei-Bo Liu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yi-Ting Fu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Guo-Xiang Zhou
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Shuang Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Cheng Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Ling-Li Zhao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xiao-Feng Xu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, China; NHC Key Laboratory of Study on Abnormal Gametes and Reproductive Tract, Anhui, China
| | - Yi-Chao Huang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China; Key Laboratory of Population Health Across Life Cycle (Anhui Medical University), Ministry of Education of The People's Republic of China, No 81 Meishan Road, Hefei 230032, Anhui, China.
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9
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Liu J, Ruan F, Cao S, Li Y, Xu S, Xia W. Associations between prenatal multiple metal exposure and preterm birth: Comparison of four statistical models. CHEMOSPHERE 2022; 289:133015. [PMID: 34822868 DOI: 10.1016/j.chemosphere.2021.133015] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 10/19/2021] [Accepted: 11/18/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Exposure to some heavy metals has been demonstrated to be related to the risk of preterm birth (PTB). However, the effects of multi-metal mixture are seldom assessed. Thus, we aimed to investigate the associations of maternal exposure to metal mixture with PTB, and to identify the main contributors to PTB from the mixture. METHODS The population in the nested case-control study was from a prospective cohort enrolled in Wuhan, China between 2012 and 2014. Eighteen metals were measured in maternal urine collected before delivery. Logistic regression, elastic net regularization (ENET), weighted quantile sum regression (WQSR), and Bayesian kernel machine regression (BKMR) were used to estimate the overall effect and identify important mixture components that drive the associations with PTB. RESULTS Logistic regression found naturally log-transformed concentrations of 13 metals were positively associated with PTB after adjusting for the covariates, and only V, Zn, and Cr remained the significantly positive associations when additionally adjusting for the 13 metals together. ENET identified 11 important metals for PTB, and V (β = 0.23) had the strongest association. WQSR determined the positive combined effect of metal mixture on PTB (OR: 1.44, 95%CI: 1.32, 1.57), and selected Cr and V (weighted 0.41 and 0.32, respectively) as the most weighted metals. BKMR analysis confirmed the overall mixture was positively associated with PTB, and the independent effect of V was the most significant. Besides, BKMR showed the non-linear relationships of V and Cu with PTB, and the potential interaction between Zn and Cu. CONCLUSION Applying different statistical models, the study found that exposure to the metal mixture was associated with a higher risk of PTB, and V was identified as the most important risk factor among co-exposed metals for PTB.
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Affiliation(s)
- Juan Liu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
| | - Fengyu Ruan
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
| | - Shuting Cao
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
| | - Yuanyuan Li
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
| | - Shunqing Xu
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
| | - Wei Xia
- State Key Laboratory of Environment Health (Incubation), Key Laboratory of Environment and Health, Ministry of Education, Key Laboratory of Environment and Health (Wuhan), Ministry of Environmental Protection, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, #13 Hangkong Road, Wuhan, 430030, Hubei, PR China.
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10
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Jiang YL, Fei J, Cao P, Zhang C, Tang MM, Cheng JY, Zhao H, Fu L. Serum cadmium positively correlates with inflammatory cytokines in patients with chronic obstructive pulmonary disease. ENVIRONMENTAL TOXICOLOGY 2022; 37:151-160. [PMID: 34652871 DOI: 10.1002/tox.23386] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 08/27/2021] [Accepted: 10/03/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Cadmium is a ubiquitous toxic heavy metal and environmental toxicant. Inflammation exerts central roles in the process of chronic obstructive pulmonary disease (COPD). However, few epidemiological studies on the correlation between cadmium exposure and COPD are available. The aim of this study was to evaluate the correlations among serum cadmium, inflammatory cytokines and pulmonary function in COPD patients. METHODS All 940 COPD patients were finally recruited in this study. Demographic characteristics and clinical information were extracted. Fasting serum was collected. Serum cadmium was detected through graphite furnace atomic absorption spectrophotometry. Serum inflammatory cytokines were measured using enzyme-linked immunosorbent assay. RESULTS All patients were classified into three groups according to the tertile division of serum cadmium concentration: low (<0.77 μg/L, L), medium (0.77-1.01 μg/L, M), and high (1.01 μg/L, H). Logistic regression analysis found that serum cadmium was inversely correlated with pulmonary function before and after adjusted confounding variables. When stratified by gender, serum cadmium was still negatively correlated with pulmonary function in COPD patients. Moreover, higher serum cadmium elevated CAT (COPD Assessment Test) score before and after adjusted confounding variables. Though a non-linear association between serum cadmium and inflammatory cytokines, serum cadmium was positively associated with inflammatory cytokines (TNF-α and MCP-1). TNF-α and MCP-1 exerted a partial mediator in the association between cadmium exposure and pulmonary function decline in COPD patients. CONCLUSIONS Serum cadmium concentration is inversely correlated with pulmonary function among COPD patients. Inflammatory cytokines may be important mediators for cadmium-induced pulmonary function decline in COPD patients.
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Affiliation(s)
- Ya-Lin Jiang
- Bozhou People's Hospital of Anhui Medical University, Bozhou, China
| | - Jun Fei
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Peng Cao
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Chen Zhang
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Min-Min Tang
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Jia-Yi Cheng
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Hui Zhao
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
| | - Lin Fu
- The Second Affiliated Hospital, Anhui Medical University, Hefei, China
- Department of Toxicology, Anhui Medical University, Hefei, China
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11
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Xu R, Meng X, Pang Y, An H, Wang B, Zhang L, Ye R, Ren A, Li Z, Gong J. Associations of maternal exposure to 41 metals/metalloids during early pregnancy with the risk of spontaneous preterm birth: Does oxidative stress or DNA methylation play a crucial role? ENVIRONMENT INTERNATIONAL 2022; 158:106966. [PMID: 34735952 DOI: 10.1016/j.envint.2021.106966] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 10/27/2021] [Accepted: 10/27/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Few studies have explored the effects of multiple types of metals/metalloids on spontaneous preterm birth (SPB). A nested case-control study was conducted in Shanxi Province to investigate the associations between maternal exposure to 41 metals/metalloids during early pregnancy and the risk of SPB, and to clarify the underlying mechanisms of oxidative stress and DNA methylation. METHODS A total of 74 controls with full-term delivery and 74 cases with SPB were included in the nested case-control study. The metals/metalloids in serum and the DNA adducts in peripheral blood cell DNA were determined using ICP-MS and UPLC-QqQ-MS/MS, respectively. Unconditional logistic regression models were employed to estimate the associations of the risk of SPB with the metal concentrations, as well as with the levels of oxidative stress/DNA methylation. In addition, linear regression models were used to investigate the associations between the metal/metalloid concentrations and the levels of oxidative stress/DNA methylation. RESULTS After adjusting for potential confounders, the concentrations of Mn, Fe, Cu, Nd, Hg, and Pb in maternal serum during early pregnancy were positively associated with the risk of SPB. Compared with the lowest levels (Quartile 1) of Mn, Fe, Cu, Nd, Hg, and Pb, the odds ratios of SPB increased to 5.21 (95% CI: 1.63, 16.68), 3.47 (95% CI: 1.07, 11.21), 16.23 (95% CI: 3.86, 68.18), 10.54 (95% CI: 2.79, 39.86), 5.88 (95% CI: 1.72, 20.11), and 4.09 (95% CI: 1.31, 12.77) in the highest levels (Quartile 4), respectively. A significant increase in 8-OHdG was associated with the increased exposure to Fe, Pr, Eu, Er, and Lu. The levels of 5-MdC, 5-HmdC, and N6-MdA-the indicators of DNA methylation-were associated with exposure to multiple metals/metalloids. However, no significant associations were observed between the levels of oxidative stress or DNA methylation and the risk of SPB. CONCLUSIONS Exposure to multiple types of metals/metalloids during early pregnancy is positively associated with the risk of SPB. Oxidative stress and DNA methylation are significantly associated with exposure to multiple metals/metalloids. Systemic oxidative stress and DNA methylation have not been proven to be the mediating mechanisms of metals increasing the risk of SPB.
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Affiliation(s)
- Ruiwei Xu
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Center for Environment and Health, Peking University, Beijing 100871, China
| | - Xin Meng
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Center for Environment and Health, Peking University, Beijing 100871, China
| | - Yiming Pang
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Hang An
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Bin Wang
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Le Zhang
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Rongwei Ye
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Aiguo Ren
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China
| | - Zhiwen Li
- Institute of Reproductive and Child Health, Peking University/Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, China.
| | - Jicheng Gong
- SKL-ESPC, College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China; Center for Environment and Health, Peking University, Beijing 100871, China.
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12
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Wu Y, Wang J, Wei Y, Chen J, Kang L, Long C, Wu S, Shen L, Wei G. Maternal exposure to endocrine disrupting chemicals (EDCs) and preterm birth: A systematic review, meta-analysis, and meta-regression analysis. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118264. [PMID: 34606968 DOI: 10.1016/j.envpol.2021.118264] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 09/26/2021] [Accepted: 09/29/2021] [Indexed: 05/15/2023]
Abstract
Preterm birth is the second most common cause of death in children under 5 years of age. The etiology of preterm birth has not yet been elucidated. Although maternal exposure to endocrine disrupting chemicals (EDCs) may increase the risk for preterm birth, associations have not been confirmed. We performed a meta-analysis to elucidate the relationships between maternal exposure to EDCs and preterm birth. A systematic search of PubMed, Ovid-EMBASE, and the Cochrane Library (CENTRAL) for relevant published studies providing quantitative data on the association between maternal EDC exposure and preterm birth in humans was conducted in July 2021. To calculate the overall estimates, we pooled the adjusted regression coefficients with 95% confidence intervals (CIs) from each study by the inverse variance method. A total of 59 studies were included. The pooled results indicated that maternal exposure to metals (OR, 1.23; 95% CI, 1.17 to 1.29) and phthalates (OR, 1.31; 95% CI, 1.21 to 1.42) was related to an increased risk for preterm birth. Specifically, maternal exposure to lead, cadmium, chromium, copper and manganese appeared to be correlated with an elevated risk for preterm birth. Additionally, maternal exposure to monoethyl phthalate (MEP), mono-2-ethyl-5-carboxypentyl phthalate (MECPP), monobenzyl phthalate (MBzP), and di (2-ethylhexyl) phthalate (DEHP) was also associated with preterm birth. In conclusion, maternal exposure to metals and phthalates may increase the risk for preterm birth based on current evidence.
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Affiliation(s)
- Yuhao Wu
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Junke Wang
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Yuexin Wei
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Jiadong Chen
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Lian Kang
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Chunlan Long
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Shengde Wu
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Lianju Shen
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China
| | - Guanghui Wei
- Department of Urology, Children's Hospital of Chongqing Medical University; Ministry of Education Key Laboratory of Child Development and Disorders; International Science and Technology Cooperation Base of Child Development and Critical Disorders; National Clinical Research Center for Child Health and Disorders; Chongqing Key Laboratory of Pediatrics; Chongqing Key Laboratory of Children Urogenital Development and Tissue Engineering, Chongqing, China.
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13
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Ren M, Zhao J, Wang B, An H, Li Y, Jia X, Wang J, Wang S, Yan L, Liu X, Pan B, Li Z, Ye R. Associations between hair levels of trace elements and the risk of preterm birth among pregnant Wwomen: A prospective nested case-control study in Beijing Birth Cohort (BBC), China. ENVIRONMENT INTERNATIONAL 2022; 158:106965. [PMID: 34735958 DOI: 10.1016/j.envint.2021.106965] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 10/21/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
Trace elements have various physiochemical functions in humans and are associated with the occurrence of preterm birth (PB). However, their mixed effects on PB risk have rarely been studied. We aimed to investigate the associations between hair levels of trace elements and PB risk among pregnant women. A nested case-control study with a prospective cohort was conducted in Beijing City, China. We included 82 women who had a PB [total PB (tPB)] as cases [including 40 with a spontaneous PB (SPB)] and 415 who had a term delivery as controls. Hair levels of the concerned trace elements were measured including endocrine disrupting metal(loid)s [EDMs; lead, mercury (Hg), arsenic, and cadmium] and nutritional trace metal(loid)s [NTMs; zinc (Zn), iron (Fe), copper, and selenium]. Logistic regression analysis was performed to estimate the odds ratios (ORs) for PB. Bayesian kernel machine regression (BKMR) was used to assess the associations between mixed exposure to the trace elements and PB risk. Significantly lower maternal hair concentrations of Zn and Fe were observed in the SPB cases than in the controls, whereas no differences for the other trace elements. Single-element modeling results suggested second-quartile Hg maternal hair concentrations, third-quartile Zn concentrations, and fourth-quartile Fe concentrations were associated with a reduced risk of tPB with adjusted ORs of 0.43 [95% confidence interval (CI): 0.21-0.87], 0.38 (95% CI: 0.18-0.82), and 0.48 (95% CI: 0.24-0.98), respectively, compared to first-quartile values. Similar results were obtained for SPB. According to the BKMR models, hair NTMs were significantly, monotonously, and inversely associated with the risk of SPB, after controlling for covariates and levels of the four EDMs. Fe and Zn contributed the most strongly to the association. We concluded that maternal higher levels of NTMs, especially Fe and Zn, may reduce the risk of PB.
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Affiliation(s)
- Mengyuan Ren
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
| | - Jing Zhao
- Department of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Bin Wang
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China.
| | - Hang An
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
| | - Yuhuan Li
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
| | - Xiaoqian Jia
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
| | - Jiamei Wang
- Department of Obstetrics and Gynecology, Haidian Maternal and Child Care Hospital, Beijing 100101, PR China
| | - Shuo Wang
- Department of Obstetrics and Gynecology, Haidian Maternal and Child Care Hospital, Beijing 100101, PR China
| | - Lailai Yan
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing 100191, PR China
| | - Xiaohong Liu
- Department of Obstetrics and Gynecology, Haidian Maternal and Child Care Hospital, Beijing 100101, PR China
| | - Bo Pan
- Department of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, PR China
| | - Zhiwen Li
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
| | - Rongwei Ye
- Institute of Reproductive and Child Health, Peking University/ Key Laboratory of Reproductive Health, National Health Commission of the People's Republic of China, Beijing 100191, PR China; Department of Epidemiology and Biostatistics, School of Public Health, Peking University, Beijing 100191, PR China
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14
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Immunomodulation by heavy metals as a contributing factor to inflammatory diseases and autoimmune reactions: Cadmium as an example. Immunol Lett 2021; 240:106-122. [PMID: 34688722 DOI: 10.1016/j.imlet.2021.10.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 08/10/2021] [Accepted: 10/20/2021] [Indexed: 12/22/2022]
Abstract
Cadmium (Cd) represents a unique hazard because of the long biological half-life in humans (20-30 years). This metal accumulates in organs causing a continuum of responses, with organ disease/failure as extreme outcome. Some of the cellular and molecular alterations in target tissues can be related to immune-modulating potential of Cd. This metal may cause adverse responses in which components of the immune system function as both mediators and effectors of Cd tissue toxicity, which, in combination with Cd-induced alterations in homeostatic reparative activities may contribute to tissue dysfunction. In this work, current knowledge concerning inflammatory/autoimmune disease manifestations found to be related with cadmium exposure are summarized. Along with epidemiological evidence, animal and in vitro data are presented, with focus on cellular and molecular immune mechanisms potentially relevant for the disease susceptibility, disease promotion, or facilitating development of pre-existing pathologies.
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Zheng L, Jiang YL, Fei J, Cao P, Zhang C, Xie GF, Wang LX, Cao W, Fu L, Zhao H. Circulatory cadmium positively correlates with epithelial-mesenchymal transition in patients with chronic obstructive pulmonary disease. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 215:112164. [PMID: 33756289 DOI: 10.1016/j.ecoenv.2021.112164] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 06/12/2023]
Abstract
Environmental cadmium (Cd) exposure can cause several pulmonary diseases. Epithelial-mesenchymal transition (EMT) involved in the process of chronic obstructive pulmonary disease (COPD). However, the association between environmental Cd exposure and EMT was unclear in COPD patients. This study aimed to analyze the associations among circulatory Cd, EMT and COPD based on case-control study. Four hundred COPD patients and 400 control subjects were recruited. Circulatory Cd was detected using atomic adsorption spectrometer. MicroRNA-30 (miR-30) was measured by RT-PCR and the markers of pulmonary EMT were evaluated through western blotting. Circulatory Cd concentration was increased and serum miR-30 was decreased in COPD patients. Circulatory Cd was inversely associated with pulmonary function in COPD patients. Moreover, serum miR-30 was gradually decreased in parallel with FEV1 in COPD patients. Meanwhile, there was a negative association between serum miR-30 and circulatory Cd in COPD patients. Further analysis found that E-cadherin, one of epithelial biomarkers, was reduced in lung tissues of COPD patients with higher circulatory Cd. On the contrary, pulmonary N-cadherin, Vimentin and α-SMA, three of mesenchymal biomarkers, were increased in COPD patients with higher circulatory Cd. In vitro experiments revealed that Cd exposure repressed miR-30 levels and promoted EMT in BEAS-2B cells. Our results provide evidence that miR-30 reduction contributing to pulmonary EMT may involve in the process of Cd-induced COPD.
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Affiliation(s)
- Ling Zheng
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Ya-Lin Jiang
- The Bozhou People's Hospital, Bozhou 236800, China
| | - Jun Fei
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Peng Cao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Chen Zhang
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Guo-Fang Xie
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Li-Xiang Wang
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Wei Cao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China
| | - Lin Fu
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China; Department of Toxicology, Anhui Medical University, Hefei 230032, China.
| | - Hui Zhao
- The Second Affiliated Hospital, Anhui Medical University, Hefei 230032, China.
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Padmanabhan V, Song W, Puttabyatappa M. Praegnatio Perturbatio-Impact of Endocrine-Disrupting Chemicals. Endocr Rev 2021; 42:295-353. [PMID: 33388776 PMCID: PMC8152448 DOI: 10.1210/endrev/bnaa035] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Indexed: 02/07/2023]
Abstract
The burden of adverse pregnancy outcomes such as preterm birth and low birth weight is considerable across the world. Several risk factors for adverse pregnancy outcomes have been identified. One risk factor for adverse pregnancy outcomes receiving considerable attention in recent years is gestational exposure to endocrine-disrupting chemicals (EDCs). Humans are exposed to a multitude of environmental chemicals with known endocrine-disrupting properties, and evidence suggests exposure to these EDCs have the potential to disrupt the maternal-fetal environment culminating in adverse pregnancy and birth outcomes. This review addresses the impact of maternal and fetal exposure to environmental EDCs of natural and man-made chemicals in disrupting the maternal-fetal milieu in human leading to adverse pregnancy and birth outcomes-a risk factor for adult-onset noncommunicable diseases, the role lifestyle and environmental factors play in mitigating or amplifying the effects of EDCs, the underlying mechanisms and mediators involved, and the research directions on which to focus future investigations to help alleviate the adverse effects of EDC exposure.
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Affiliation(s)
| | - Wenhui Song
- Department of Pediatrics, University of Michigan, Ann Arbor, Michigan, USA
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Padmanabhan V, Moeller J, Puttabyatappa M. Impact of gestational exposure to endocrine disrupting chemicals on pregnancy and birth outcomes. ADVANCES IN PHARMACOLOGY (SAN DIEGO, CALIF.) 2021; 92:279-346. [PMID: 34452689 DOI: 10.1016/bs.apha.2021.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
With the advent of industrialization, humans are exposed to a wide range of environmental chemicals, many with endocrine disrupting potential. As successful maintenance of pregnancy and fetal development are under tight hormonal control, the gestational exposure to environmental endocrine disrupting chemicals (EDC) have the potential to adversely affect the maternal milieu and support to the fetus, fetal developmental trajectory and birth outcomes. This chapter summarizes the impact of exposure to EDCs both individually and as mixtures during pregnancy, the immediate and long-term consequences of such exposures on the mother and fetus, the direct and indirect mechanisms through which they elicit their effects, factors that modify their action, and the research directions to focus future investigations.
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Affiliation(s)
| | - Jacob Moeller
- Department of Pediatrics, University of Michigan, Ann Arbor, MI, United States
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Amegah AK, Sewor C, Jaakkola JJK. Cadmium exposure and risk of adverse pregnancy and birth outcomes: a systematic review and dose-response meta-analysis of cohort and cohort-based case-control studies. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2021; 31:299-317. [PMID: 33510430 DOI: 10.1038/s41370-021-00289-6] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Revised: 11/26/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND There are several inconsistencies in the epidemiological literature on the strength of the association between cadmium exposure and adverse pregnancy and birth outcomes, and the threshold dose of adverse effect. OBJECTIVES We therefore conducted a systematic review and dose-response meta-analysis to evaluate the available evidence to influence clinical decision making and better tailor public health interventions. METHODS PubMed and Scopus databases were searched up to January, 2019. Eighteen prospective studies satisfied the inclusion criteria. Random effects model was used to compute summary-effect estimates. RESULTS Cadmium exposure resulted in 42.11 g (95% confidence interval [CI]: -69.03, -15.18) reduction in birth weight, and 0.105 cm (95% CI: -0.181, -0.029) reduction in head circumference per 1 µg/l increment in blood/urine cadmium levels. Cadmium exposure also resulted in 21% (RR = 1.21; 95% CI: 1.02, 1.43), 32% (RR = 1.32; 95% CI: 1.05, 1.67) and 10% (RR = 1.10; 95% CI: 0.96, 1.27) increased risk of low birth weight (LBW), preterm birth (PTB), and small-for-gestational age (SGA), respectively. Risk for all outcomes decreased with decreasing exposure. In fixed effects dose-response meta-regression analyses, we found no evidence of association of cadmium exposure with LBW and SGA. For PTB, a 1 µg/l increment in cadmium exposure corresponded to 0.5% (OR = 1.005, 95% CI: 1.003, 1.007) increase in PTB risk. CONCLUSIONS Cadmium exposure was associated with risk of adverse birth outcomes. Regarding PTB, the formal dose-response meta-analyses suggests a causal association.
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Affiliation(s)
- A Kofi Amegah
- Public Health Research Group, Department of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana.
| | - Christian Sewor
- Public Health Research Group, Department of Biomedical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Jouni J K Jaakkola
- Center for Environmental and Respiratory Health Research (CERH), University of Oulu, Oulu, Finland
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Caron-Beaudoin É, Whitworth KW, Bosson-Rieutort D, Wendling G, Liu S, Verner MA. Density and proximity to hydraulic fracturing wells and birth outcomes in Northeastern British Columbia, Canada. JOURNAL OF EXPOSURE SCIENCE & ENVIRONMENTAL EPIDEMIOLOGY 2021; 31:53-61. [PMID: 32651474 DOI: 10.1038/s41370-020-0245-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2019] [Revised: 05/29/2020] [Accepted: 06/29/2020] [Indexed: 05/28/2023]
Abstract
BACKGROUND Hydraulic fracturing, a method used in Northeastern British Columbia (Canada) to extract natural gas, can release contaminants with potential deleterious health effects on fetal development. To date, the association between hydraulic fracturing activity and birth outcomes has not been evaluated in this region. OBJECTIVE To evaluate the association between the hydraulic fracturing well density/proximity and birth outcomes (birthweight, head circumference, preterm birth and small for gestational age (SGA)). METHODS We used birth records from the Fort St John hospital between December 30, 2006 and December 29, 2016 (n = 6333 births). To estimate gestational exposure, we used inverse distance weighting (IDW) to calculate the density/proximity of hydraulic fracturing wells to pregnant women's postal code centroid. For each birth, we calculated three IDWs using 2.5, 5, and 10 km buffer zones around women's postal code centroid. We used linear and logistic regressions to evaluate associations between quartiles of postal code well density/proximity and birth outcomes, controlling for relevant covariates. RESULTS No associations were found between postal code well density/proximity and head circumference or SGA. A negative association was found between postal code well density/proximity and birthweight for infants born to women in the 2nd quartile of the 10 km buffer (β [95% confidence interval (CI)]: -47.28 g [-84.30; -10.25]), and in the 2nd (β [95% CI]: -40.87 g [-78.01; -3.73]) and 3rd (β [95% CI]: -42.01 g [-79.15; -4.87]) quartiles of the 5 km buffer. Increased odds of preterm birth were observed among women in the 2nd quartile of the 2.5 km buffer (odds ratio (OR) [95% CI]: 1.60 [1.30; 2.43]). CONCLUSIONS This is the first epidemiological study in Northeastern British Columbia evaluating associations between hydraulic fracturing and health outcomes. Our results show inconsistent patterns of association between hydraulic fracturing, preterm birth and reduced birthweight, and effect estimates did not match expected dose-response relationships.
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Affiliation(s)
- Élyse Caron-Beaudoin
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, 2375 Chemin de la Cote-Sainte-Catherine, Montreal, QC, Canada.
- Centre de recherche en santé publique, Université de Montréal et CIUSSS du Centre-Sud-de-l'Île-de-Montréal, 7101, Parc Ave., Montreal, QC, Canada.
- Centre for Clinical Epidemiology and Evaluation, University of British Columbia, Vancouver Coastal Health Research Institute, 828 West 10th Avenue, Research Pavilion, Vancouver, BC, Canada.
- Department of Health and Society and Department of Environmental and Physical Sciences, University of Toronto Scarborough, Toronto, ON, Canada.
| | - Kristina W Whitworth
- Department of Medicine, Epidemiology and Population Sciences Section, Baylor College of Medicine, Houston, TX, USA
- Center for Precision Environmental Health, Baylor College of Medicine, Houston, TX, USA
| | - Delphine Bosson-Rieutort
- Centre de recherche en santé publique, Université de Montréal et CIUSSS du Centre-Sud-de-l'Île-de-Montréal, 7101, Parc Ave., Montreal, QC, Canada
- Department of Health Policy, Management & Evaluation (DGEPS), School of Public Health, Université de Montréal, 7101 Avenue du Parc, H3N 1×9, Montreal, QC, Canada
- National Institute for Excellence in Health and Social Services (INESS), Information Management Team, 202 Avenue Union, Montreal, QC, Canada
| | - Gilles Wendling
- GW Solutions, Inc., 201-5180 Dublin Way, Nanaimo, BC, Canada
| | - Suyang Liu
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, 2375 Chemin de la Cote-Sainte-Catherine, Montreal, QC, Canada
- Department of Global Health, School of Health Sciences, Wuhan University, 115# Donghu Road, Wuhan, China
| | - Marc-André Verner
- Department of Occupational and Environmental Health, School of Public Health, Université de Montréal, 2375 Chemin de la Cote-Sainte-Catherine, Montreal, QC, Canada
- Centre de recherche en santé publique, Université de Montréal et CIUSSS du Centre-Sud-de-l'Île-de-Montréal, 7101, Parc Ave., Montreal, QC, Canada
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20
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Zhu HL, Shi XT, Xu XF, Xiong YW, Yi SJ, Zhou GX, Liu WB, Huang MM, Gao L, Zhang C, Zhao LL, Xu DX, Wang H. Environmental cadmium exposure induces fetal growth restriction via triggering PERK-regulated mitophagy in placental trophoblasts. ENVIRONMENT INTERNATIONAL 2021; 147:106319. [PMID: 33348103 DOI: 10.1016/j.envint.2020.106319] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 11/28/2020] [Accepted: 12/01/2020] [Indexed: 05/25/2023]
Abstract
Cadmium (Cd), an environmental toxicant, is positively associated with fetal growth restriction (FGR). However, the mechanism by which gestational exposure to Cd induces FGR remains unclear. This study designed in vitro and in vivo experiments to explore the role of placental mitophagy in Cd-impaired fetal growth. Based on our case-control study, we also investigated the association of placental mitophagy with reduced progesterone (P4) level and all-cause FGR. We firstly found environmental Cd exposure lowered the P4 content in maternal sera, placentae and amnioticfluids of mice. The level of three mitochondrial P4 synthases, including StAR, CYP11A1 and 3β-HSD, was also reduced in Cd-treated placentae. Furthermore, Cd triggered mitophagy, as determined by the degradation of two mitochondrial proteins HSP60 and COX IV, and the accumulation of co-localizations of TOM20 with LC3B or Parkin in placental trophoblasts. Correspondingly, Cd elevated mitochondrial Parkin level in placental trophoblasts. Mdivi-1, a mitophagy inhibitor, obviously attenuated Cd-induced reduction of placental P4 and FGR in mice. Moreover, mdivi-1 and Parkin siRNA (siR) markedly reversed Cd-caused P4 synthesis inhibition in human placental trophoblasts. Interestedly, the PERK/ATF4 signaling was activated in Cd-stimulated placental trophoblasts. PERK siR inhibited mitochondrial proteins degradation in Cd-stimulated placental trophoblasts. In particularly, mitophagy activation and P4 synthesis suppression occurred in small-for-gestational-age placentae based on our case-control study. Environmental Cd exposure induced FGR via activating PERK-regulated mitophagy and inhibiting P4 synthesis in placentaltrophoblasts. Furthermore, placental mitophagy was related to the reduced progesterone level and all-cause fetal growth restriction based on our case-control study. As above, placental mitophagy maybe the common mechanism of environmental toxicants-impaired fetal growth.
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Affiliation(s)
- Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xue-Ting Shi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xiao-Feng Xu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, China; NHC Key Laboratory of study on abnormal gametes and reproductive tract, Anhui, China
| | - Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Song-Jia Yi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Guo-Xiang Zhou
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei-Bo Liu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Miao-Miao Huang
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, China; NHC Key Laboratory of study on abnormal gametes and reproductive tract, Anhui, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Cheng Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Ling-Li Zhao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
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21
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Ashrap P, Watkins DJ, Milne GL, Ferguson KK, Loch-Caruso R, Fernandez J, Rosario Z, Vélez-Vega CM, Alshawabkeh A, Cordero JF, Meeker JD. Maternal Urinary Metal and Metalloid Concentrations in Association with Oxidative Stress Biomarkers. Antioxidants (Basel) 2021; 10:antiox10010114. [PMID: 33467519 PMCID: PMC7830802 DOI: 10.3390/antiox10010114] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 01/22/2023] Open
Abstract
Metal exposure has been associated with a wide range of adverse birth outcomes and oxidative stress is a leading hypothesis of the mechanism of action of metal toxicity. We assessed the relationship between maternal exposure to essential and non-essential metals and metalloids in pregnancy and oxidative stress markers, and sought to identify windows of vulnerability and effect modification by fetal sex. In our analysis of 215 women from the PROTECT birth cohort study, we measured 14 essential and non-essential metals in urine samples at three time points during pregnancy. The oxidative stress marker 8-iso-prostaglandin F2α (8-iso-PGF2α) and its metabolite 2,3-dinor-5,6-dihydro-15-15-F2t-IsoP, as well as prostaglandin F2α (PGF2α), were also measured in the same urine samples. Using linear mixed models, we examined the main effects of metals on markers of oxidative stress as well as the visit-specific and fetal sex-specific effects. After adjustment for covariates, we found that a few urinary metal concentrations, most notably cesium (Cs) and copper (Cu), were associated with higher 8-iso-PGF2α with effect estimates ranging from 7.3 to 14.9% for each interquartile range, increase in the metal concentration. The effect estimates were generally in the same direction at the three visits and a few were significant only among women carrying a male fetus. Our data show that higher urinary metal concentrations were associated with elevated biomarkers of oxidative stress. Our results also indicate a potential vulnerability of women carrying a male fetus.
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Affiliation(s)
- Pahriya Ashrap
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; (P.A.); (D.J.W.); (R.L.-C.); (J.F.)
| | - Deborah J. Watkins
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; (P.A.); (D.J.W.); (R.L.-C.); (J.F.)
| | - Ginger L. Milne
- Vanderbilt University Medical Center, Division of Clinical Pharmacology, Nashville, TN 37232, USA;
| | - Kelly K. Ferguson
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina, NC 27709, USA;
| | - Rita Loch-Caruso
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; (P.A.); (D.J.W.); (R.L.-C.); (J.F.)
| | - Jennifer Fernandez
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; (P.A.); (D.J.W.); (R.L.-C.); (J.F.)
| | - Zaira Rosario
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, GA 30602, USA; (Z.R.); (J.F.C.)
| | - Carmen M. Vélez-Vega
- UPR Medical Sciences Campus, University of Puerto Rico Graduate School of Public Health, San Juan, PR 00921, USA;
| | - Akram Alshawabkeh
- College of Engineering, Northeastern University, Boston, MA 02115, USA;
| | - José F. Cordero
- Department of Epidemiology and Biostatistics, University of Georgia, Athens, GA 30602, USA; (Z.R.); (J.F.C.)
| | - John D. Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; (P.A.); (D.J.W.); (R.L.-C.); (J.F.)
- Correspondence: ; Tel.: +1-734-764-7184
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22
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Khanam R, Kumar I, Oladapo-Shittu O, Twose C, Islam ASMDA, Biswal SS, Raqib R, Baqui AH. Prenatal Environmental Metal Exposure and Preterm Birth: A Scoping Review. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18020573. [PMID: 33445519 PMCID: PMC7827269 DOI: 10.3390/ijerph18020573] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/29/2020] [Accepted: 01/06/2021] [Indexed: 02/06/2023]
Abstract
Preterm birth (PTB) and its complications are the leading causes of under-five year old child deaths, accounting worldwide for an estimated one million deaths annually. The etiology of PTB is complex and multifactorial. Exposures to environmental metals or metalloids are pervasive and prenatal exposures to them are considered important in the etiology of PTB. We conducted a scoping review to determine the extent of prenatal exposures to four metals/metalloids (lead, mercury, cadmium and arsenic) and their association with PTB. We reviewed original research studies published in PubMed, Embase, the Cochrane Library, Scopus, POPLINE and the WHO regional indexes from 2000 to 2019; 36 articles were retained for full text review. We documented a higher incidence of PTB with lead and cadmium exposures. The findings for mercury and arsenic exposures were inconclusive. Metal-induced oxidative stress in the placenta, epigenetic modification, inflammation, and endocrine disruptions are the most common pathways through which heavy metals and metalloids affect placental functions leading to PTB. Most of the studies were from the high-income countries, reflecting the need for additional data from low-middle-income countries, where PTB rates are higher and prenatal exposure to metals are likely to be just as high, if not higher.
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Affiliation(s)
- Rasheda Khanam
- International Center for Maternal and Newborn Health, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; (R.K.); (O.O.-S.)
| | - Ishaan Kumar
- Department of Chemistry, Georgetown University, Washington, DC 20057, USA;
| | - Opeyemi Oladapo-Shittu
- International Center for Maternal and Newborn Health, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; (R.K.); (O.O.-S.)
| | - Claire Twose
- Welch Medical Library, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
| | | | - Shyam S. Biswal
- Department of Environmental Health and Engineering, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA;
| | - Rubhana Raqib
- International Center for Diarrheal Disease Research, Mohakhali, Dhaka 1212, Bangladesh;
| | - Abdullah H. Baqui
- International Center for Maternal and Newborn Health, Department of International Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD 21205, USA; (R.K.); (O.O.-S.)
- Correspondence: ; Tel.: +1-410-955-3850
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23
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Melatonin protects against environmental stress-induced fetal growth restriction via suppressing ROS-mediated GCN2/ATF4/BNIP3-dependent mitophagy in placental trophoblasts. Redox Biol 2021; 40:101854. [PMID: 33454563 PMCID: PMC7811044 DOI: 10.1016/j.redox.2021.101854] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 12/07/2020] [Accepted: 01/01/2021] [Indexed: 12/15/2022] Open
Abstract
Gestational exposure to environmental stress induces fetal growth restriction (FGR), and thereby increasing the risk of infant death and chronic noncommunicable diseases in adults. However, the mechanism by which environmental stress induces FGR remains unclear. Based on case-control study, we found that the reduced level of melatonin (MT), a major secretory product from the pineal gland, was observed in placentae of FGR. This work was to investigate the protective effect of MT on environmental stress-caused FGR and its mechanisms. We used cadmium (Cd) as an environmental stressor to stimulate pregnant mice and thereby establishing a FGR model. The data showed that maternal Cd exposure lowered the P4 concentration in maternal sera, placentae and amniotic fluid, and caused FGR. Correspondingly, the expression of CYP11A1, a critical P4 synthase, was markedly downregulated in Cd-treated placentae. Simultaneously, Cd triggered BNIP3-dependent mitophagy in placental trophoblasts, as determined by the degradation of mitochondrial proteins, including HSP60 and COX IV, and the accumulation of puncta representing co-localization of TOM20 with LC3B or BNIP3 with LC3B. Based on our case-control study, we also found that activated BNIP3-dependent mitophagy and P4 synthesis inhibition occurred in SGA placentae. Most importantly, BNIP3 siRNA reversed Cd-induced P4 synthesis suppression in human placental trophoblasts. It is noteworthy that MT alleviated Cd-caused P4 synthesis suppression and FGR via antagonizing BNIP3-dependent mitophagy in placental trophoblasts. Further results confirmed that MT attenuated Cd-triggered BNIP3-dependent mitophagy via blocking GCN2/ATF4 signaling. Amusingly, Cd triggered oxidative stress and then activating GCN2/ATF4 signaling in placental trophoblasts. As expected, MT obviously suppressed Cd-caused reactive oxygen species (ROS) release. In the present study, we propose a neoteric mechanism by which MT protects against environmental stress-impaired P4 synthesis and fetal growth via suppressing ROS-mediated GCN2/ATF4/BNIP3-dependent mitophagy in placental trophoblasts. As above, MT is a potential therapeutic agent antagonizing environmental stress-induced developmental toxicity. Melatonin protects against Cd-induced fetal growth restriction. Melatonin attenuates Cd-induced placental P4 synthesis inhibition by mitophagy. Melatonin suppresses Cd-triggered placental mitophagy via blocking GCN2/ATF4. Melatonin blocks Cd-activated placental GCN2/ATF4 signaling via repressing ROS. Activated mitophagy and reduced P4 synthesis occur in SGA placentae.
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24
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Xiong YW, Xu XF, Zhu HL, Cao XL, Yi SJ, Shi XT, Zhu KH, Nan Y, Zhao LL, Zhang C, Gao L, Chen YH, Xu DX, Wang H. Environmental exposure to cadmium impairs fetal growth and placental angiogenesis via GCN-2-mediated mitochondrial stress. JOURNAL OF HAZARDOUS MATERIALS 2021; 401:123438. [PMID: 32763717 DOI: 10.1016/j.jhazmat.2020.123438] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 06/15/2020] [Accepted: 07/06/2020] [Indexed: 06/11/2023]
Abstract
Cadmium (Cd), a well-known environmental pollutant, can lead to placental insufficiency and fetal growth restriction. However, the underlying mechanism is unknown. The purpose of our study is to explore the effect of Cd on placental angiogenesis and its mechanism using in vitro and in vivo models. Results found that gestational Cd exposure obviously decreased placental weight and impaired placental vascular development in mice. Correspondingly, Cd exposure evidently downregulated the expression of VEGF-A protein (a key indicator of angiogenesis) and progesterone receptor (PR) in placental trophoblasts. Further experiment showed that lentivirus PR overexpression reversed Cd-caused the reduction of VEGF-A level in human placental trophoblasts. In addition, Cd significantly reduced progesterone level, down-regulated the expression of key progesterone synthase (StAR, CYP11A1), and activated mitochondrial stress response and GCN-2/p-eIF2α signaling in placental trophoblasts. Additional experiment showed that GCN-2 siRNA pretreatment markedly alleviated Cd-activated mitochondrial stress response, restored Cd-downregulated the expression of CYP11A1, reversed Cd-reduced the level of progesterone and VEGF-A in human placental trophoblasts. Finally, our case-control study confirmed that impaired placental angiogenesis and reduced progesterone level occurred in all-cause small for gestational age placenta. Taken together, environmental exposure to Cd impairs fetal growth and placental angiogenesis via GCN-2-mediated mitochondrial stress.
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Affiliation(s)
- Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xiao-Feng Xu
- Reproductive Medicine Center, Department of Obstetrics and Gynecology, the First Affiliated Hospital of Anhui Medical University, China; NHC Key Laboratory of study on abnormal gametes and reproductive tract,Anhui, China
| | - Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xue-Lin Cao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Song-Jia Yi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xue-Ting Shi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Kai-Heng Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yuan Nan
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Ling-Li Zhao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Chen Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yuan-Hua Chen
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
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25
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Jing S, Chen C, Gan Y, Vogel J, Zhang J. Incidence and trend of preterm birth in China, 1990-2016: a systematic review and meta-analysis. BMJ Open 2020; 10:e039303. [PMID: 33310797 PMCID: PMC7735132 DOI: 10.1136/bmjopen-2020-039303] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 10/19/2020] [Accepted: 11/24/2020] [Indexed: 01/02/2023] Open
Abstract
OBJECTIVES To update the WHO estimate of preterm birth rate in China in 1990-2016 and to further explore variations by geographic regions and years of occurrence. DESIGN Systematic review and meta-analysis. DATA SOURCES Pubmed, Embase, Cochrane Library and Sinomed databases were searched from 1990 to 2018. ELIGIBILITY CRITERIA Studies were included if they provided preterm birth data with at least 500 total births. Reviews, case-control studies, intervention studies and studies with insufficient information or published before 1990 were excluded. We estimated pooled incidence of preterm birth by a random effects model, and preterm birth rate in different year, region and by livebirths or all births in subgroup analyses. RESULTS Our search identified 3945 records. After the removal of duplicates and screening of titles and abstracts, we reviewed 254 studies in full text and excluded 182, leaving 72 new studies. They were combined with the 82 studies included in the WHO report (154 studies, 187 data sets in total for the meta-analysis), including 24 039 084 births from 1990 to 2016. The pooled incidence of preterm birth in China was 6.09% (95% CI 5.86% to 6.31%) but has been steadily increasing from 5.36% (95% CI 4.89% to 5.84%) in 1990-1994 to 7.04% (95% CI 6.09% to 7.99%) in 2015-2016. The annual rate of increase was about 1.05% (95% CI 0.85% to 1.21%). Northwest China appeared to have the highest preterm birth rate (7.3%, 95% CI 4.92% to 9.68% from 1990 to 2016). CONCLUSIONS The incidence of preterm birth in China has been rising gradually in the past three decades. It was 7% in 2016. Preterm birth rate varied by region with the West having the highest occurrence.
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Affiliation(s)
- Shiwen Jing
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chang Chen
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yuexin Gan
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Joshua Vogel
- Maternal, Child and Adolescent Health Program, Burnet Institute, Melbourne, Victoria, Australia
| | - Jun Zhang
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ministry of Education-Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Gonzalez-Nahm S, Nihlani K, S. House J, L. Maguire R, G. Skinner H, Hoyo C. Associations between Maternal Cadmium Exposure with Risk of Preterm Birth and Low after Birth Weight Effect of Mediterranean Diet Adherence on Affected Prenatal Outcomes. TOXICS 2020; 8:toxics8040090. [PMID: 33092103 PMCID: PMC7712046 DOI: 10.3390/toxics8040090] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 12/15/2022]
Abstract
Prenatal cadmium exposure at non-occupational levels has been associated with poor birth outcomes. The intake of essential metals, such as iron and selenium, may mitigate cadmium exposure effects. However, at high levels, these metals can be toxic. The role of dietary patterns rich in these metals is less studied. We used a linear and logistic regression in a cohort of 185 mother-infant pairs to assess if a Mediterranean diet pattern during pregnancy modified the associations between prenatal cadmium exposure and (1) birth weight and (2) preterm birth. We found that increased cadmium exposure during pregnancy was associated with lower birth weight (β = -210.4; 95% CI: -332.0, -88.8; p = 0.008) and preterm birth (OR = 0.11; 95% CI: 0.01, 0.72; p = 0.04); however, these associations were comparable in offspring born to women reporting high adherence to a Mediterranean diet (β = -274.95; 95% CI: -701.17, 151.26; p = 0.20) and those with low adherence (β = -64.76; 95% CI: -359.90, 230.37; p = 0.66). While the small sample size limits inference, our findings suggest that adherence to a Mediterranean dietary pattern may not mitigate cadmium exposure effects. Given the multiple organs targeted by cadmium and its slow excretion rate, larger studies are required to clarify these findings.
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Affiliation(s)
- Sarah Gonzalez-Nahm
- Department of Nutrition, University of Massachusetts Amherst, Amherst, MA 01003, USA
- Correspondence:
| | - Kiran Nihlani
- Department of Statistics, University of Pittsburgh, Pittsburgh, PA 15260, USA;
| | - John S. House
- National Institute of Environmental Health Sciences, Durham, NC 27709, USA;
| | - Rachel L. Maguire
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA; (R.L.M.); (H.G.S.); (C.H.)
| | - Harlyn G. Skinner
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA; (R.L.M.); (H.G.S.); (C.H.)
| | - Cathrine Hoyo
- Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA; (R.L.M.); (H.G.S.); (C.H.)
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Shi XT, Zhu HL, Xiong YW, Liu WB, Zhou GX, Cao XL, Yi SJ, Dai LM, Zhang C, Gao L, Xu DX, Wang H. Cadmium down-regulates 11β-HSD2 expression and elevates active glucocorticoid level via PERK/p-eIF2α pathway in placental trophoblasts. CHEMOSPHERE 2020; 254:126785. [PMID: 32334250 DOI: 10.1016/j.chemosphere.2020.126785] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2020] [Revised: 03/30/2020] [Accepted: 04/12/2020] [Indexed: 06/11/2023]
Abstract
Fetal overexposure to active glucocorticoid (GC) is the major cause for fetal growth restriction (FGR). This study investigated the influences of cadmium (Cd) exposure on active GC and its mechanism in placental trophoblasts. Pregnant mice were exposed to CdCl2 (4.5 mg/kg, i.p.). Human JEG-3 cells were treated with CdCl2 (0-20 μM). Prenatal Cd exposure significantly increased active GC level in amniotic fluid and placenta. Similarly, Cd treatment also elevated active GC level in medium. Expectedly, the expression of 11β-HSD2 protein was markedly downregulated in Cd-exposed placental trophoblasts. We further found that Cd activated the PERK/p-eIF2α signaling pathway in placental trophoblasts. Mechanistically, PERK siRNA pretreatment completely blocked PERK/p-eIF2α signaling, and thereby restoring Cd-downregulated 11β-HSD2 protein expression in human placental trophoblasts. We further found that N-acetylcysteine, a well-known antioxidant, obviously reversed Cd-downregulated 11β-HSD2 protein expression by inhibiting p-PERK/p-eIF2α signaling in placental trophoblasts. Overall, our data suggest that Cd activates the PERK/p-eIF2α signaling, down-regulates the protein expression of 11β-HSD2, and thereby elevating active GC level in placental trophoblast.
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Affiliation(s)
- Xue-Ting Shi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hua-Long Zhu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Yong-Wei Xiong
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Wei-Bo Liu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Guo-Xiang Zhou
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Xue-Lin Cao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Song-Jia Yi
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Li-Min Dai
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Cheng Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Lan Gao
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, China; Key Laboratory of Environmental Toxicology of Anhui Higher Education Institutes, China.
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28
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Bala R, Singh V, Rajender S, Singh K. Environment, Lifestyle, and Female Infertility. Reprod Sci 2020; 28:617-638. [DOI: 10.1007/s43032-020-00279-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Accepted: 07/24/2020] [Indexed: 01/01/2023]
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Tsuji M, Koriyama C, Ishihara Y, Yamamoto M, Yamamoto-Hanada K, Kanatani K, Bamai YA, Onishi K, Senju A, Araki S, Shibata E, Morokuma S, Sanefuji M, Kitazawa H, Saito M, Umezawa M, Onoda A, Kusuhara K, Tanaka R, Kawamoto T. Associations Between Metal Levels in Whole Blood and IgE Concentrations in Pregnant Women Based on Data From the Japan Environment and Children's Study. J Epidemiol 2019; 29:478-486. [PMID: 30643099 PMCID: PMC6859078 DOI: 10.2188/jea.je20180098] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Background Metal exposures could possibly affect allergic responses in pregnant women, although no studies have yet shown a clear relationship between the two, and such exposures might also affect the development of allergic diseases in children. Methods We investigated the relationship between metal concentrations in whole blood and immunoglobulin E (IgE; total and specific) in 14,408 pregnant women who participated in the Japan Environment and Children’s Study. The subjects submitted self-administered questionnaires, and blood samples were collected from them twice, specifically, during the first trimester and again during the second/third trimester. Concentrations of the metals Cd, Pb, Hg, Se, and Mn, as well as serum total and allergen-specific IgEs for egg white, house dust-mites (HDM), Japanese cedar pollen (JCP), animal dander, and moth, were measured. Allergen-specific IgE(s) were divided based on concentrations <0.35 or ≥0.35 UA/mL, and the metal levels were divided into quartiles. Results Multivariable logistic regression analysis showed that there was a significant negative correlation between HDM- and animal dander-specific IgEs and Hg and Mn concentrations. Conversely, there was a significant positive relationship between JCP-specific IgE and Hg and Se concentrations. Conclusions Metal exposures may be related to both increases and decreases in allergen-specific IgEs in pregnant women.
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Affiliation(s)
- Mayumi Tsuji
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
| | - Chihaya Koriyama
- Department of Epidemiology and Preventive Medicine, Kagoshima University Graduate School of Medical and Dental Sciences
| | - Yasuhiro Ishihara
- Laboratory of Molecular Brain Science, Graduate School of Integrated Arts and Sciences, Hiroshima University
| | - Megumi Yamamoto
- Department of Environment and Public Health, National Institute for Minamata Disease
| | - Kiwako Yamamoto-Hanada
- Medical Support Center for Japan Environment and Children's Study, National Center for Child Health and Development
| | - Kumiko Kanatani
- Department of Health Informatics, Graduate School of Medicine and Public Health, Kyoto University
| | - Yu Ait Bamai
- Department of Public Health, Hokkaido University Graduate School of Medicine, Sciences
| | - Kazunari Onishi
- Center for Birth Cohort Studies, Interdisciplinary Graduate School of Medicine, University of Yamanashi
| | - Ayako Senju
- Japan Environment and Children's Study, UOEH Subunit Center, University of Occupational and Environmental Health.,Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health
| | - Shunsuke Araki
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health
| | - Eiji Shibata
- Department of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health
| | - Seiichi Morokuma
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University
| | - Masafumi Sanefuji
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University
| | - Hiroshi Kitazawa
- Medical Support Center for Japan Environment and Children's Study, National Center for Child Health and Development
| | - Mayako Saito
- Medical Support Center for Japan Environment and Children's Study, National Center for Child Health and Development
| | - Masakazu Umezawa
- Department of Materials Science and Technology, Faculty of Industrial Science and Technology, Tokyo University of Science
| | - Atsuto Onoda
- Division of Neonatology, Center for Maternal-Neonatal Care, Nagoya University Hospital.,Postdoctoral Fellow of Japan Society for the Promotion of Science
| | - Koichi Kusuhara
- Japan Environment and Children's Study, UOEH Subunit Center, University of Occupational and Environmental Health.,Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health
| | - Rie Tanaka
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
| | - Toshihiro Kawamoto
- Department of Environmental Health, School of Medicine, University of Occupational and Environmental Health
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30
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Tsai MS, Chen MH, Lin CC, Liu CY, Chen PC. Children's environmental health based on birth cohort studies of Asia (2) - air pollution, pesticides, and heavy metals. ENVIRONMENTAL RESEARCH 2019; 179:108754. [PMID: 31563033 DOI: 10.1016/j.envres.2019.108754] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Revised: 06/16/2019] [Accepted: 09/17/2019] [Indexed: 06/10/2023]
Abstract
The life style and child raising environment in Asia are quite different compared with Western countries. Besides, the children's environmental threats and difficulties in conducting studies could be different. To address children's environmental health in Asia area, the Birth Cohort Consortium of Asia (BiCCA) was co-established in 2011. We reviewed the mercury, polychlorinated biphenyls, perfluoroalkyl substances, phthalates, and environmental tobacco smoke in pervious based on birth cohort studies in Asia. The aim of this study was to summarize the traditional environmental pollution and the target subjects were also based on the birth cohort in Asia area. Environmental pollutants included air pollutants, pesticides focusing on organochlorine pesticides, diakylphosphates, and pyrethroid, and heavy metals including lead, arsenic, cadmium, manganese, vanadium, and thallium. Fetal growth and pregnancy outcomes, childhood growth and obesity, neurodevelopment and behavioral problems, and allergic disease and immune function were classified to elucidate the children's health effects. In total, 106 studies were selected in this study. The evidences showed air pollution or pesticides may affect growth during infancy or childhood, and associated with neurodevelopmental or behavioral problems. Prenatal exposure to lead or manganese was associated with neurodevelopmental or behavioral problems, while exposure to arsenic or cadmium may influence fetal growth. In addition to the harmonization and international collaboration of birth cohorts in Asia; however, understand the whole picture of exposure scenario and consider more discipline in the research are necessary.
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Affiliation(s)
- Meng-Shan Tsai
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Mei-Huei Chen
- Institute of Population Health Sciences, National Health Research Institutes, Miaoli, Taiwan; Department of Pediatrics, National Taiwan University Hospital and National Taiwan University College of Medicine, Taipei, Taiwan
| | - Ching-Chun Lin
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Chen-Yu Liu
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan
| | - Pau-Chung Chen
- Institute of Environmental and Occupational Health Sciences, National Taiwan University College of Public Health, Taipei, Taiwan; Department of Public Health, National Taiwan University, College of Public Health, Taipei, Taiwan; Department of Environmental and Occupational Medicine, National Taiwan University Hospital and National Taiwan University, College of Medicine, Taipei, Taiwan; Office of Occupational Safety and Health, National Taiwan University College of Medicine and Hospital, Taipei, Taiwan; Innovation and Policy Center for Population Health and Sustainable Environment, National Taiwan University, College of Public Health, Taipei, Taiwan.
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31
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Kim SS, Meeker JD, Keil AP, Aung MT, Bommarito PA, Cantonwine DE, McElrath TF, Ferguson KK. Exposure to 17 trace metals in pregnancy and associations with urinary oxidative stress biomarkers. ENVIRONMENTAL RESEARCH 2019; 179:108854. [PMID: 31678726 PMCID: PMC6907890 DOI: 10.1016/j.envres.2019.108854] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 09/26/2019] [Accepted: 10/22/2019] [Indexed: 05/18/2023]
Abstract
BACKGROUND Exposure to some toxic metals, such as lead and cadmium, has been associated with increased oxidative stress. However less is known about other metals and metal mixtures, especially in pregnant women who are a vulnerable population. METHODS To study the relationship between exposure to trace metals and oxidative stress, we analyzed a panel of 17 metals and two oxidative stress biomarkers (8-isoprostane and 8-hydroxydeoxyguanosine [8-OHdG]) in urine samples collected at ~26 weeks gestation from pregnant women in Boston (n = 380). We used linear regression models to calculate percent differences and 95% confidence intervals (CI) in oxidative stress markers for an interquartile range (IQR) increase in each urinary metal with adjustment for other metals. In addition, we applied principal components analysis (PCA) and Bayesian kernel machine regression (BKMR), to examine cumulative effects (within correlated groups of exposures as well as overall) and interactions. RESULTS We estimated 109% (95% CI: 47, 198) higher 8-isoprostane and 71% (95% CI: 45, 102) higher 8-OHdG with an IQR increase in urinary selenium (Se). We also estimated higher 8-isoprostane (47%, 95% CI: 20.5, 79.4) and 8-OHdG (15.3%, 95% CI: 5.09, 26.5) in association with urinary copper (Cu). In our PCA, we observed higher 8-isoprostane levels in association with the "essential" PC (highly loaded by Cu, Se, and Zinc). In BKMR analyses, we also estimated higher levels of both oxidative stress biomarkers with increasing Se and Cu as well as increasing levels of both oxidative stress biomarkers in association with cumulative concentrations of urinary trace metals. CONCLUSION We observed higher 8-isoprostane and 8-OHdG levels in association with urinary trace metals and elements, particularly Se and Cu, in linear models and using mixtures approaches. Additionally, increasing cumulative exposure to urinary trace metals was associated with higher levels of both oxidative stress biomarkers. The beneficial effects of these compounds should be carefully questioned.
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Affiliation(s)
- Stephani S Kim
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA
| | - John D Meeker
- Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Alexander P Keil
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA; Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Max T Aung
- Environmental Health Sciences, University of Michigan School of Public Health, Ann Arbor, MI, USA
| | - Paige A Bommarito
- Department of Environmental Science and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - David E Cantonwine
- Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Thomas F McElrath
- Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kelly K Ferguson
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, NC, USA.
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32
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Ramakrishnan R, Stuart AL, Salemi JL, Chen H, O'Rourke K, Kirby RS. Maternal exposure to ambient cadmium levels, maternal smoking during pregnancy, and congenital diaphragmatic hernia. Birth Defects Res 2019; 111:1399-1407. [DOI: 10.1002/bdr2.1555] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2019] [Revised: 07/10/2019] [Accepted: 07/10/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Rema Ramakrishnan
- College of Public HealthUniversity of South Florida Tampa Florida
- Nuffield Department of Women's and Reproductive HealthThe George Institute for Global Health, University of Oxford Oxford UK
- University of New South Wales Sydney New South Wales Australia
| | - Amy L. Stuart
- College of Public HealthUniversity of South Florida Tampa Florida
| | - Jason L. Salemi
- Department of Family and Community MedicineBaylor College of Medicine Houston Texas
| | - Henian Chen
- College of Public HealthUniversity of South Florida Tampa Florida
| | | | - Russell S. Kirby
- College of Public HealthUniversity of South Florida Tampa Florida
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33
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Paniagua L, Diaz-Cueto L, Huerta-Reyes M, Arechavaleta-Velasco F. Cadmium exposure induces interleukin-6 production via ROS-dependent activation of the ERK1/2 but independent of JNK signaling pathway in human placental JEG-3 trophoblast cells. Reprod Toxicol 2019; 89:28-34. [PMID: 31252067 DOI: 10.1016/j.reprotox.2019.06.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/20/2019] [Accepted: 06/21/2019] [Indexed: 12/12/2022]
Abstract
Maternal exposure to cadmium (Cd) has been associated with preeclampsia (PE), which is a multisystemic disorder characterized by endothelial dysfunction. Elevated interleukin (IL)-6 expression is linked to PE and has been suggested to contribute to maternal endothelial dysfunction. Cd induces IL-6 production in various cell types through different signaling pathways. Thus, this study was designed to investigate the effect of Cd on IL-6 production and the underlying mechanisms in a trophoblast-derived cell line. Cultured JEG-3 trophoblast cells were exposed to non-toxic concentrations of CdCl2 in the presence or absence of various MAPK inhibitors or N-Acetyl-L-cysteine (NAC). IL-6 was measured by ELISA. Phosphorylation of ERK1/2, JNK, and c-Jun was assessed by Western blotting. Cd exposure induced IL-6 production and increased ERK1/2, JNK, and c-Jun phosphorylation. NAC and the inhibition of ERK1/2 significantly reduced Cd-induced IL-6 production. These data indicate that Cd induces IL-6 production in trophoblast cells through a ROS-dependent activation of ERK1/2.
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Affiliation(s)
- Lucero Paniagua
- Unidad de Investigacion Medica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 "Dr. Luis Castelazo Ayala", IMSS, CDMX, Mexico; Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, CDMX, Mexico
| | - Laura Diaz-Cueto
- Unidad de Investigacion Medica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 "Dr. Luis Castelazo Ayala", IMSS, CDMX, Mexico
| | - Maira Huerta-Reyes
- Unidad de Investigacion Medica en Enfermedades Nefrologicas, Hospital de Especialidades "Dr. Bernardo Sepúlveda Gutiérrez", Centro Medico Nacional Siglo XXI, IMSS, CDMX, Mexico
| | - Fabian Arechavaleta-Velasco
- Unidad de Investigacion Medica en Medicina Reproductiva, UMAE Hospital de Gineco Obstetricia No. 4 "Dr. Luis Castelazo Ayala", IMSS, CDMX, Mexico.
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Pajewska-Szmyt M, Sinkiewicz-Darol E, Gadzała-Kopciuch R. The impact of environmental pollution on the quality of mother's milk. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2019; 26:7405-7427. [PMID: 30687894 PMCID: PMC6447517 DOI: 10.1007/s11356-019-04141-1] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 01/02/2019] [Indexed: 05/18/2023]
Abstract
Breastfeeding is a gold standard of neonate nutrition because human milk contains a lot of essential compounds crucial for proper development of a child. However, milk is also a biofluid which can contain environmental pollution, which can have effects on immune system and consequently on the various body organs. Polychlorinated biphenyls are organic pollutants which have been detected in human milk. They have lipophilic properties, so they can penetrate to fatty milk and ultimately to neonate digestive track. Another problem of interest is the presence in milk of heavy metals-arsenic, lead, cadmium, and mercury-as these compounds can lead to disorders in production of cytokines, which are important immunomodulators. The toxicants cause stimulation or suppression of this compounds. This can lead to health problems in children as allergy, disorders in the endocrine system, end even neurodevelopment delay and disorder. Consequently, correlations between pollutants and bioactive components in milk should be investigated. This article provides an overview of environmental pollutants found in human milk as well as of the consequences of cytokine disorder correlated with presence of heavy metals. Graphical abstract.
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Affiliation(s)
- Martyna Pajewska-Szmyt
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St, 87-100, Toruń, Poland
- Interdisciplinary Centre for Modern Technologies, Nicolaus Copernicus University, 4 Wileńska St, PL-87100, Toruń, Poland
| | - Elena Sinkiewicz-Darol
- Ludwik Rydygier Provincial Polyclinic Hospital in Toruń, Human Milk Bank, Św. Józefa 53-59, 87-100, Toruń, Poland
- Human Milk Bank Foundation, 128J Podkowy St, 04-937, Warsaw, Poland
| | - Renata Gadzała-Kopciuch
- Department of Environmental Chemistry and Bioanalytics, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 7 Gagarin St, 87-100, Toruń, Poland.
- Interdisciplinary Centre for Modern Technologies, Nicolaus Copernicus University, 4 Wileńska St, PL-87100, Toruń, Poland.
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35
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Li ZJ, Liang CM, Xia X, Huang K, Yan SQ, Tao RW, Pan WJ, Sheng J, Tao YR, Xiang HY, Hao JH, Wang QN, Tong SL, Tao FB. Association between maternal and umbilical cord serum cobalt concentration during pregnancy and the risk of preterm birth: The Ma'anshan birth cohort (MABC) study. CHEMOSPHERE 2019; 218:487-492. [PMID: 30497031 DOI: 10.1016/j.chemosphere.2018.11.122] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Revised: 10/31/2018] [Accepted: 11/19/2018] [Indexed: 06/09/2023]
Abstract
Cobalt is an essential trace element and has been suggested to be involved in oxidative stress and inflammatory responses. However, researches have paid little attention to the association between serum cobalt levels during pregnancy and the risk of preterm birth (PTB, <37 week of gestation). The purpose of this study was to determine the association between maternal and umbilical cord serum cobalt concentrations and the risk of PTB. A total of 2951, 3080, and 2698 serum samples were obtained from pregnant women in the first, the second trimester, and the umbilical cord blood, respectively. The tertile levels of ln-transformed cobalt were defined as low, medium and high levels for cobalt respectively. In our study, the rate of PTB (<37 weeks of gestation) was elevated in subjects with low cobalt levels in the first trimester of pregnancy (adjusted OR 1.61, 95% CI: 1.01, 2.58) and the second trimester of pregnancy (adjusted OR 1.62, 95% CI: 1.03, 2.54). The adjusted OR for PTB was 2.46 (95% CI: 1.34, 4.53) among subjects with low cobalt levels and 2.22 (95% CI: 1.19, 4.15) among subjects with medium cobalt levels in the umbilical cord serum. Our findings demonstrated that the lower levels in maternal and umbilical cord serum cobalt were associated with the increased the risk of PTB.
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Affiliation(s)
- Zhi-Juan Li
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Chun-Mei Liang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Xun Xia
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Kun Huang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Shuang-Qin Yan
- Ma'anshan Maternal and Child Health (MCH) Center, Ma'anshan, China
| | - Rui-Wen Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Wei-Jun Pan
- Ma'anshan Maternal and Child Health (MCH) Center, Ma'anshan, China
| | - Jie Sheng
- Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Yi-Ran Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Hai-Yun Xiang
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Jia-Hu Hao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Qu-Nan Wang
- Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China
| | - Shi-Lu Tong
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China; School of Public Health and Social Work and Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia; Shanghai Children's Medical Center, Shanghai Jiao Tong University, Shanghai, China.
| | - Fang-Biao Tao
- Department of Maternal, Child and Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui, China; Anhui Provincial Key Laboratory of Population Health and Aristogenics, Hefei, Anhui, China.
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Zhang L, Song L, Liu B, Wu M, Wang L, Zhang B, Xiong C, Xia W, Li Y, Cao Z, Wang Y, Xu S. Prenatal cadmium exposure is associated with shorter leukocyte telomere length in Chinese newborns. BMC Med 2019; 17:27. [PMID: 30722777 PMCID: PMC6364384 DOI: 10.1186/s12916-019-1262-4] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 01/16/2019] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Newborn telomere length (TL) is considered a potential marker for future disease and lifelong health, but few epidemiological studies have examined the determinants of TL in early life. The study aim was to investigate whether there is an association between prenatal cadmium exposure and relative cord blood TL in Chinese newborns. METHODS Participants were 410 mother-newborn pairs drawn from a prospective birth cohort study conducted in Wuhan, China, between November 2013 and March 2015. Urine samples were collected from pregnant women during their period of institutional delivery. Urinary cadmium concentrations were measured by inductively coupled plasma mass spectrometry. The real-time quantitative polymerase chain reaction detection was used to measure relative TL using genomic DNA isolated from umbilical cord blood leukocytes. Multivariate linear regression models were used to estimate the effect of prenatal urinary cadmium concentration on relative cord blood TL. RESULTS The geometric mean of maternal urinary cadmium concentration was 0.68 μg/g creatinine. In the multivariate-adjusted linear regression model, per doubling of maternal urinary cadmium concentration was associated with 6.83% (95% CI - 11.44%, - 1.97%; P = 0.006) shorter relative cord blood TL. Stratified analyses indicated that the inverse association between prenatal urinary cadmium and newborn relative TL was more pronounced among female infants and mothers < 29 years, while there were no significant effect modification according to infant sex (P for interaction = 0.907) and maternal age (P for interaction = 0.797). CONCLUSIONS The findings indicated that increased maternal urinary cadmium was associated with shortened relative cord blood TL. The results provide more evidence of the negative effects of environmental cadmium exposure and suggest that accelerated aging or cadmium-related diseases may begin in early life.
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Affiliation(s)
- Lina Zhang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Lulu Song
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Bingqing Liu
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Mingyang Wu
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Lulin Wang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Bin Zhang
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Chao Xiong
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Wei Xia
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Yuanyuan Li
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China
| | - Zhongqiang Cao
- Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China
| | - Youjie Wang
- Department of Maternal and Child Health, School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China. .,Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China.
| | - Shunqing Xu
- Key Laboratory of Environment and Health, Ministry of Education and Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Hangkong Road 13, Wuhan, 430030, Hubei, China.
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Zhao Q, Gao L, Liu Q, Cao Y, He Y, Hu A, Chen W, Cao J, Hu C, Li L, Tao F. Impairment of learning and memory of mice offspring at puberty, young adulthood, and adulthood by low-dose Cd exposure during pregnancy and lactation via GABA AR α5 and δ subunits. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 166:336-344. [PMID: 30278395 DOI: 10.1016/j.ecoenv.2018.09.109] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 09/20/2018] [Accepted: 09/25/2018] [Indexed: 06/08/2023]
Abstract
Cadmium (Cd) is a pervasive carcinogen and environmental endocrine disruptor. We studied the changes in learning and memory of offspring mice, whose mothers were exposed to 10 mg Cd/L via the drinking water during pregnancy and lactation period, as well as the changes of testosterone and estrogen levels, serum Cd levels, the histopathological changes and the changes in the mRNA and protein levels of different subunits of γ-aminobutyric acid receptor subtype A subunits (GABAARs) in the hippocampus at the prepuberty, puberty, young adult, and adult stages. At birth, Cd had no obvious effect on mice offspring as statistically accessed based on their body weight, body length, and tail length (all p > 0.05). After grouped, the serum Cd levels increased in the three exposed groups more than in the normal control group at stages (all p < 0.05). Only serum estradiol of female offspring at age 7 weeks was significantly decreased compared with other groups (all p < 0.05). Histopathological results showed that the arrangement of the cells in hippocampal CA1 area of mice offspring was significantly sparse in the exposed groups compared with the control group. At 5 and 7 weeks, two Cd-exposed groups showed prolonged escape latency and exploring time for the platform compared with the normal group in the Morris water maze (all p < 0.05). Only increased protein expression of GABAARα5 was found in the Cd group at these two ages. At age 12 weeks, similar impaired learning and memory of female mice, and decreased protein expression of GABAARδ was found in Cd-exposed groups. Collectively, low-dose Cd had no effect on the growth of mice offspring but affected their learning and memory, especially female offspring, at puberty, young adulthood, and adulthood through changed structure in the hippocampal CA1 area and protein expression of GABAARα5 and GABAARδ.
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Affiliation(s)
- Qihong Zhao
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China; Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui Province, China
| | - Lei Gao
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Qifei Liu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Ye Cao
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Yue He
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Anla Hu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Wenjun Chen
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Jiyu Cao
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Chuanlai Hu
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Li Li
- Department of Nutrition and Food Hygiene, School of Public Health, Anhui Medical University, 81 Mei Shan Road, Hefei 230032, Anhui, China
| | - Fangbiao Tao
- Department of Maternal, Child & Adolescent Health, School of Public Health, Anhui Medical University, Hefei, Anhui Province, China.
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Kim SS, Meeker JD, Carroll R, Zhao S, Mourgas MJ, Richards MJ, Aung M, Cantonwine DE, McElrath TF, Ferguson KK. Urinary trace metals individually and in mixtures in association with preterm birth. ENVIRONMENT INTERNATIONAL 2018; 121:582-590. [PMID: 30300816 PMCID: PMC6233299 DOI: 10.1016/j.envint.2018.09.052] [Citation(s) in RCA: 81] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2018] [Revised: 09/17/2018] [Accepted: 09/29/2018] [Indexed: 05/20/2023]
Abstract
One in ten infants born in the United States is born preterm, or prior to 37 weeks gestation. Exposure to elevated levels of metals, such as lead and arsenic, has been linked to higher risk of preterm birth (PTB), but consequences of lower levels of exposure and less studied metals are unclear. We examined the associations between 17 urinary trace metals individually and in mixtures in relation to PTB. The LIFECODES birth cohort enrolled pregnant women at <15 weeks gestation at Brigham and Women's Hospital in Boston. We selected cases of PTB (n = 99) and unmatched controls (n = 291) and analyzed urine samples for a panel of trace metals (median: 26 weeks gestation). We used logistic regression models to calculate the odds ratio (OR) for PTB and subtypes of PTB based on presentation at delivery. Subtypes included spontaneous and placental PTB. We used elastic net (ENET) regularization to identify individual metals or pairwise interactions that had the strongest associations with PTB, and principal components analysis (PCA) to identify classes of exposures associated with the outcome. We observed increased odds of PTB (OR: 1.41, 95% Confidence Interval [CI]: 1.12, 1.78) in association with an interquartile range difference in urinary copper (Cu). We also observed an increased OR for selenium (OR: 1.33, 95% CI: 0.98, 1.81). ENET selected Cu as the most important trace metal associated with PTB. PCA identified 3 principal components (PCs) that roughly reflected exposure to toxic metals, essential metals, and metals with seafood as a common source of exposure. PCs reflecting essential metals were associated with increased odds of overall and spontaneous PTB. Maternal urinary copper in the third trimester was associated with increased risk of PTB, and statistical analyses for mixtures indicated that after accounting for correlation this metal was the most important statistical predictor of the outcome.
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Affiliation(s)
- Stephani S Kim
- Epidemiology Branch, National Institute of Environmental Health Sciences, 111 TW, Alexander Dr., Research Triangle Park, NC 27709, USA
| | - John D Meeker
- Department of Environmental Health Sciences, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109, USA
| | - Rachel Carroll
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, 111 TW Alexander Dr., Research Triangle Park, NC 27709, USA
| | - Shanshan Zhao
- Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, 111 TW Alexander Dr., Research Triangle Park, NC 27709, USA
| | - Michael J Mourgas
- NSF International, PO Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48105, USA
| | - Michael J Richards
- NSF International, PO Box 130140, 789 N. Dixboro Rd., Ann Arbor, MI 48105, USA
| | - Max Aung
- Department of Environmental Health Sciences, University of Michigan School of Public Health, 1415 Washington Heights, Ann Arbor, MI 48109, USA
| | - David E Cantonwine
- Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Thomas F McElrath
- Division of Maternal-Fetal Medicine, Brigham and Women's Hospital, Harvard Medical School, 75 Francis St., Boston, MA 02115, USA
| | - Kelly K Ferguson
- Epidemiology Branch, National Institute of Environmental Health Sciences, 111 TW, Alexander Dr., Research Triangle Park, NC 27709, USA.
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Zhang J, Wang Y, Fu L, Wang B, Ji YL, Wang H, Xu DX. Chronic cadmium exposure induced hepatic cellular stress and inflammation in aged female mice. J Appl Toxicol 2018; 39:498-509. [PMID: 30375035 DOI: 10.1002/jat.3742] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Revised: 09/11/2018] [Accepted: 09/25/2018] [Indexed: 01/04/2023]
Abstract
Previous studies have revealed that acute cadmium (Cd) exposure led to inflammation in different organs through an oxidative stress mechanism. However, whether chronic Cd exposure induces inflammation in liver and the mechanistic link between inflammation and cell stress remains unclear. In the present study, we investigated the effects of chronic Cd exposure on hepatic cellular stress and inflammatory responses. Female CD1 mice were administrated with CdCl2 (10 and 100 mg/L) in drinking water for 57 weeks. Our results showed that the mRNA levels of Inos and the protein content of HO-1, markers of oxidative stress, were markedly increased in Cd-treated mice. In addition, the protein level of GRP78, the chaperone of endoplasmic reticulum (ER) stress, was significantly increased in Cd-treated mice. The expression of the proteins CHOP and peIF2α, two proteins downstream of ER stress, was also upregulated in the Cd-100 mg/L and Cd-10 mg/L group, respectively. Moreover, there were increased inflammatory cells existing in liver after Cd administration. Besides, there was a significant elevation in the mRNA level of Mip-2, Il-10 and Il-12 in the Cd-100 mg/L group. The mRNA level of Tgf-β was also upregulated in Cd-treated mice. Moreover, we also found that the number of Ki67-positive hepatic cells was increased in the Cd-10 mg/L group. Hence, our results indicated that chronic Cd exposure induced oxidative stress, ER stress, inflammatory responses and proliferation in the liver of aged female mice.
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Affiliation(s)
- Jun Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Yan Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Lin Fu
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Bo Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Yan-Li Ji
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China.,Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.,Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
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Tsuji M, Shibata E, Morokuma S, Tanaka R, Senju A, Araki S, Sanefuji M, Koriyama C, Yamamoto M, Ishihara Y, Kusuhara K, Kawamoto T. The association between whole blood concentrations of heavy metals in pregnant women and premature births: The Japan Environment and Children's Study (JECS). ENVIRONMENTAL RESEARCH 2018; 166:562-569. [PMID: 29966876 DOI: 10.1016/j.envres.2018.06.025] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/06/2018] [Accepted: 06/12/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Heavy metals are widely distributed in the environment. Recent reports have demonstrated the risk of preterm birth following heavy metal exposure. Preterm births are classified as early and late, depending on the duration of pregnancy, and are associated with increased risk of congenital illnesses such as heart failure, asthma, etc. Particularly, early preterm births carry a higher risk of mortality; however, the differential effects of heavy metal exposure on early and late preterm births are unknown. OBJECTIVES To analyze the association between maternal whole blood concentrations of heavy metals, such as cadmium (Cd), lead (Pb), mercury (Hg), selenium (Se), and manganese (Mn) that are common toxicants in Japan, and early and late preterm births. METHODS The data of 14,847 pregnant women who were participants of the Japan Environment and Children's Study were used. Data of the self-questionnaire pertaining to the first trimester (T1), second/third trimester (T2), and medical records after delivery were analyzed. We divided preterm birth into two groups: early preterm (22 to < 34 weeks) and late preterm (34 to < 37 weeks). Maternal blood samples for measuring heavy metal concentrations were collected in T2 (pregnancy weeks: 14-39). The participants were classified into four quartiles (Q1-Q4) according to increasing heavy metal levels. RESULTS The rate of preterm birth was 4.5%. After controlling for confounding factors, such as age, pre-pregnancy body mass index, smoking, partner's smoking, drinking habits, gravidity, parity, number of cesarean deliveries, uterine infections, household income, educational levels, and sex of infant, Cd levels were found, by multivariable logistic regression analysis, to be significantly associated with early preterm birth (p = 0.002), with odds ratio for early preterm birth of 1.91 (95% confidence interval: 1.12-3.27, P = 0.018) in subjects of Q4 compared with in subjects with term birth (≧ 37 weeks). CONCLUSION Maternal blood Cd levels during pregnancy are positively associated with the risk of early preterm birth among Japanese women. Identification of the main source of maternal Cd exposure may contribute to the prevention of early preterm births and health maintenance of mothers and their infants in the future.
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Affiliation(s)
- Mayumi Tsuji
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Eiji Shibata
- Department of Obstetrics and Gynecology, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Seiichi Morokuma
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Rie Tanaka
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Ayako Senju
- Japan Environment and Children's Study, UOEH Subunit Center, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan; Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Shunsuke Araki
- Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Masafumi Sanefuji
- Research Center for Environmental and Developmental Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka 812-8582, Japan.
| | - Chihaya Koriyama
- Department of Epidemiology and Preventive Medicine, Kagoshima University Graduate School of Medical and Dental Sciences, 8-35-1 Sakuragaoka, Kagoshima 890-8544, Japan.
| | - Megumi Yamamoto
- Department of Environment and Public Health, National Institute for Minamata Disease, 4058-18 Hama, Minamata, Kumamoto 867-0008, Japan.
| | - Yasuhiro Ishihara
- Laboratory of Molecular Brain Science, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8521, Japan.
| | - Koichi Kusuhara
- Japan Environment and Children's Study, UOEH Subunit Center, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan; Department of Pediatrics, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
| | - Toshihiro Kawamoto
- Department of Environmental Health, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu, Fukuoka 807-8555, Japan.
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Singh L, Anand M, Singh S, Taneja A. Environmental toxic metals in placenta and their effects on preterm delivery-current opinion. Drug Chem Toxicol 2018; 43:531-538. [PMID: 30257569 DOI: 10.1080/01480545.2018.1515216] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Preterm birth is a significant public reproductive health concern globally; Furthermore, preterm birth has long-lasting medical and pecuniary burdens on the society. Moreover, preterm birth is well-established as the underlying cause of low birth weight in infants as well as neonatal mortality. A growing body of literature suggests that the etiology of preterm delivery in women is elusive; however, countless environmental factors are considered responsible for preterm birth. Environmental contaminants that are toxic metals such as lead, cadmium, arsenic, and mercury are familiar confounding factors for preterm birth globally. Recent studies have indicated that these toxic heavy metals induce oxidative stress in the trophoblastic placental tissue by producing reactive oxygen species that alter the mechanism of antioxidants possibly leading to preterm birth. Moreover, no obvious mechanism underlying metal-induced oxidative stress in the placenta has been identified until date. Consequently, this review offers an outline of the currently existing scientific information on the association of toxic metals and redox status of the placental tissue with preterm birth. Furthermore, this study critically recognizes the gaps related to the deleterious effect of metals on the gestation period in scientific literature.
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Affiliation(s)
- Laxmi Singh
- Department of Chemistry, Dr. B. R. Ambedkar University, Khandari Campus, Agra, India
| | - Madhu Anand
- Department of Chemistry, Dr. B. R. Ambedkar University, Khandari Campus, Agra, India
| | - Saroj Singh
- Department of Obstetrician and Gynecology, S.N. Medical College, Agra, India
| | - Ajay Taneja
- Department of Chemistry, Dr. B. R. Ambedkar University, Khandari Campus, Agra, India
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Hu CY, Li FL, Jiang W, Hua XG, Zhang XJ. Pre-Pregnancy Health Status and Risk of Preterm Birth: A Large, Chinese, Rural, Population-Based Study. Med Sci Monit 2018; 24:4718-4727. [PMID: 29982265 PMCID: PMC6069560 DOI: 10.12659/msm.908548] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The aim of this study was to estimate the incidence of preterm birth (PTB) and identify maternal risk factors before pregnancy in rural China, and to determine their population-attributable fractions (PAFs). A prospectively population-based study was conducted in the city of Fuyang, China. Surveillance locations were randomly selected by cluster sampling based on administrative areas and geographic characteristics. Data were collected through interview questionnaires and medical examination records from the participants, then follow-up until discharge, fetus death, or at a maximum of 6 weeks postpartum, whichever came first. We used logistic regression analysis to identify the associated factors. PAFs were also estimated to examine the impact of risk factors. The incidence of PTB was 3.86% in this study. Multivariate analyses showed that risk factors for PTB were economic pressure (aOR=2.98, 95% CI, 2.40–3.71), hypertension (aOR=3.45, 95% CI, 2.23–5.36), hypoglycemia (aOR=2.07, 95% CI, 1.58, 2.72), hyperglycemia (aOR=1.69, 95% CI, 1.09, 2.62), serum creatinine (<44 μmol/L) (aOR=1.78, 95% CI, 1.13–2.40), hypothyroidism (aOR=1.37, 95% CI, 1.06–1.78), positivity for anti-CMV IgM (aOR=2.57, 95% CI, 1.21–5.45), multiple pregnancy (aOR=3.35, 95% CI, 1.87–6.00), and parity (≥3 times) (aOR=1.67, 95% CI, 1.05–2.64). Economic pressure was the most significant contributor (11.57%), while parity was the lowest (0.10%). This study demonstrated the relatively high burden of PTBs in a rural Chinese area. A broader focus on the risk factors prior to pregnancy amenable to interventions of women may reduce the incidence of PTB.
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Affiliation(s)
- Cheng-Yang Hu
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Feng-Li Li
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Wen Jiang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Xiao-Guo Hua
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China (mainland)
| | - Xiu-Jun Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Anhui Medical University, Hefei, Anhui, China (mainland)
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Hu J, Wang H, Hu YF, Xu XF, Chen YH, Xia MZ, Zhang C, Xu DX. Cadmium induces inflammatory cytokines through activating Akt signaling in mouse placenta and human trophoblast cells. Placenta 2018; 65:7-14. [DOI: 10.1016/j.placenta.2018.03.008] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2017] [Revised: 03/24/2018] [Accepted: 03/27/2018] [Indexed: 12/11/2022]
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Guo MY, Wang H, Chen YH, Xia MZ, Zhang C, Xu DX. N-acetylcysteine alleviates cadmium-induced placental endoplasmic reticulum stress and fetal growth restriction in mice. PLoS One 2018; 13:e0191667. [PMID: 29373603 PMCID: PMC5786300 DOI: 10.1371/journal.pone.0191667] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 01/09/2018] [Indexed: 01/12/2023] Open
Abstract
Cadmium (Cd) is a developmental toxicant that induces fetal growth restriction (FGR). Placental endoplasmic reticulum (ER) stress is associated with FGR. This study investigated the effects of N-acetylcysteine (NAC) on Cd-induced placental ER stress and FGR. Pregnant mice were intraperitoneally injected with CdCl2 daily from gestational day (GD)13 to GD17. As expected, Cd reduced fetal weight and crown-rump length. Cd decreased the internal space of blood vessels in the placental labyrinth layer and inhibited placental cell proliferation. Several genes of growth factors, such as Vegf-a, placental growth factor, Igf1 and Igf1r, and several genes of nutrient transport pumps, such as Glut1, Fatp1 and Snat2, were down-regulated in placenta of Cd-treated mice. Moreover, Cd evoked placental ER stress. Of interest, NAC alleviated Cd-induced FGR. Additional experiment showed that NAC inhibited Cd-induced impairment of placental development and placental ER stress. Therefore, NAC may be exploited for prevention of Cd-induced placental insufficiency and FGR.
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Affiliation(s)
- Min-Yin Guo
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
| | - Hua Wang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
- * E-mail: (DXX); (HW)
| | - Yuan-Hua Chen
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
- Department of Histology and Embryology, Anhui Medical University, Hefei, China
| | - Mi-Zhen Xia
- Life Science College, Anhui Medical University, Hefei, China
| | - Cheng Zhang
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
| | - De-Xiang Xu
- Department of Toxicology, School of Public Health, Anhui Medical University, Hefei, China
- * E-mail: (DXX); (HW)
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Li J, Wang H, Hao JH, Chen YH, Liu L, Yu Z, Fu L, Tao FB, Xu DX. Maternal serum lead level during pregnancy is positively correlated with risk of preterm birth in a Chinese population. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2017; 227:484-489. [PMID: 28494400 DOI: 10.1016/j.envpol.2017.05.009] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2016] [Revised: 04/02/2017] [Accepted: 05/03/2017] [Indexed: 06/07/2023]
Abstract
Lead (Pb) is a well-known developmental toxicant. The aim of the present study was to analyze the association between maternal serum Pb level and risk of preterm birth in a population-based birth cohort study. The present study analyzed a sub-study of the China-Anhui Birth Cohort that recruited 3125 eligible mother-and-singleton-offspring pairs. Maternal serum Pb level was measured by graphite furnace atomic absorption spectrometry. All subjects were classified into three groups by tertile division according to serum Pb level: Low-Pb (L-Pb, <1.18 μg/dl), Medium-Pb (M-Pb, 1.18-1.70 μg/dl), and High-Pb (H-Pb, ≥1.71 μg/dl). The rate of preterm birth was 2.8% among subjects with L-Pb, 6.1% among subjects with M-Pb, and 8.1% among subjects with H-Pb, respectively. After controlling confounding factors, the adjusted OR for preterm birth was 2.33 (95%CI: 1.49, 3.65) among subjects with M-Pb and 3.09 (95%CI: 2.01, 4.76) among subjects with H-Pb. Of interest, maternal Pb exposure in early gestational stage than in middle gestational stage was more susceptible to preterm birth. Moreover, maternal serum Pb level was only associated with increased risk of late preterm birth. The present study provides evidence that maternal serum Pb level during pregnancy is positively associated with risk of preterm birth in a Chinese population.
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Affiliation(s)
- Jun Li
- Department of Toxicology, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Hua Wang
- Department of Toxicology, Anhui Medical University, Hefei, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Jia-Hu Hao
- Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China
| | - Yuan-Hua Chen
- Department of Toxicology, Anhui Medical University, Hefei, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Lu Liu
- Department of Toxicology, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Zhen Yu
- Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Lin Fu
- Department of Toxicology, Anhui Medical University, Hefei, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China
| | - Fang-Biao Tao
- Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China.
| | - De-Xiang Xu
- Department of Toxicology, Anhui Medical University, Hefei, China; Anhui Provincial Key Laboratory of Population Health & Aristogenics, Anhui Medical University, Hefei, China; Laboratory of Environmental Toxicology, Anhui Medical University, Hefei, China.
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Ferguson KK, Chin HB. Environmental chemicals and preterm birth: Biological mechanisms and the state of the science. CURR EPIDEMIOL REP 2017; 4:56-71. [PMID: 28944158 PMCID: PMC5608103 DOI: 10.1007/s40471-017-0099-7] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
PURPOSE OF REVIEW Preterm birth is a significant worldwide health problem of uncertain origins. The extant body of literature examining environmental contaminant exposures in relation to preterm birth is extensive but results remain ambiguous for most organic pollutants, metals and metalloids, and air pollutants. In the present review we examine recent epidemiologic studies investigating these associations, and identify recent advances and the state of the science. Additionally, we highlight biological mechanisms of action in the pathway between chemical exposures and preterm birth, including inflammation, oxidative stress, and endocrine disruption, that deserve more attention in this context. RECENT FINDINGS Important advances have been made in the study of the environment and preterm birth, particularly in regard to exposure assessment methods, exploration of effect modification by co-morbidities and exposures, and in identification of windows of vulnerability during gestation. There is strong evidence for an association between maternal exposure to some persistent pesticides, lead, and fine particulate matter, but data on other contaminants is sparse and only suggestive trends can be noted with the current data. SUMMARY Beyond replicating current findings, further work must be done to improve understanding of mechanisms underlying the associations observed between environmental chemical exposures and preterm birth. By examining windows of vulnerability, disaggregating preterm birth by phenotypes, and measuring biomarkers of mechanistic pathways in these epidemiologic studies we can improve our ability to detect associations with exposure, provide additional evidence for causality in an observational setting, and identify opportunities for intervention.
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Affiliation(s)
- Kelly K. Ferguson
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
| | - Helen B. Chin
- Epidemiology Branch, National Institute of Environmental Health Sciences, Research Triangle Park, North Carolina
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