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Lin M, Yan L, Wang X, Wang Y, Zhou Y, Wang L, Tian C. Association between concentrations of rare earth elements in chorionic villus and risk for unexplained spontaneous abortion. ENVIRONMENTAL RESEARCH 2024; 257:119165. [PMID: 38759774 DOI: 10.1016/j.envres.2024.119165] [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: 08/27/2023] [Revised: 04/17/2024] [Accepted: 05/15/2024] [Indexed: 05/19/2024]
Abstract
Rare earth elements (REEs) exposure during pregnancy may increase the risk of unexplained spontaneous abortion. However, the association between REEs intrauterine exposure and unexplained spontaneous abortion had yet to be studied. In order to conduct this large case-control study, we thus collected chorionic villus from 641 unexplained spontaneous abortion and 299 control pregnant women and detected the concentrations of 15 REEs by inductively coupled plasma mass spectrometer (ICP-MS). Because the detection rates of 10 REEs were less than 80%, the remaining 5 REEs, which were lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd) and yttrium (Y), underwent to further analysis. The association between 5 REEs and unexplained spontaneous abortion was assessed by using the logistic regression, bayesian kernel regression (BKMR) and weighted quantile sum regression (WQS) models. In the adjusted logistic regression model, Pr, Nd and Y enhanced the incidence of unexplained spontaneous abortion in a dose-dependent way and Ce increased the risk only at high concentration group. The result of BKMR model demonstrated that the risk of unexplained spontaneous abortion increased as the percentile of five mixed REEs increased. Y and Nd were both significantly associated with an increased incidence of unexplained spontaneous abortion, but La was correlated with a decrease in the risk of unexplained spontaneous abortion. Pr was substantially associated with an increase in the risk of unexplained spontaneous abortion when other REEs concentrations were fixed at the 25th and 50th percentiles. According to WQS regression analysis, the WQS index was significantly associated with unexplained spontaneous abortion (OR = 3.75, 95% CI:2.40-5.86). Y had the highest weight, followed by Nd and Pr, which was consistent with the analysis results of our other two models. In short, intrauterine exposure to REEs was associated with an increased risk of unexplained spontaneous abortion, with Y, Nd and Pr perhaps playing an essential role.
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Affiliation(s)
- Meng Lin
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Department of Medical Genetics, Center for Medical Genetics, Peking University, Beijing, 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China
| | - Lailai Yan
- Department of Laboratorial Science and Technology, School of Public Health, Peking University, Beijing, 100191, China
| | - Xiaoye Wang
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Department of Medical Genetics, Center for Medical Genetics, Peking University, Beijing, 100191, China
| | - Yutong Wang
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Department of Medical Genetics, Center for Medical Genetics, Peking University, Beijing, 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China
| | - Ying Zhou
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Department of Medical Genetics, Center for Medical Genetics, Peking University, Beijing, 100191, China
| | - Linlin Wang
- Institute of Reproductive and Child Health, National Health Commission Key Laboratory of Reproductive Health, Peking University, Beijing, 100191, China.
| | - Chan Tian
- State Key Laboratory of Female Fertility Promotion, Center for Reproductive Medicine, Department of Obstetrics and Gynecology, Peking University Third Hospital, Department of Medical Genetics, Center for Medical Genetics, Peking University, Beijing, 100191, China; National Clinical Research Center for Obstetrics and Gynecology, Peking University Third Hospital, Beijing, 100191, China; Key Laboratory of Assisted Reproduction, Ministry of Education, Beijing, 100191, China; Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology, Beijing, 100191, China.
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2
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Ebdrup NH, Schullehner J, Knudsen UB, Liew Z, Thomsen AML, Lyngsø J, Bay B, Arendt LH, Clemmensen PJ, Sigsgaard T, Hansen B, Ramlau-Hansen CH. Drinking water nitrate and risk of pregnancy loss: a nationwide cohort study. Environ Health 2022; 21:87. [PMID: 36114546 PMCID: PMC9479399 DOI: 10.1186/s12940-022-00897-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 09/01/2022] [Indexed: 05/12/2023]
Abstract
BACKGROUND Nitrate contamination is seen in drinking water worldwide. Nitrate may pass the placental barrier. Despite suggestive evidence of fetal harm, the potential association between nitrate exposure from drinking water and pregnancy loss remains to be studied. We aimed to investigate if nitrate in drinking water was associated with the risk of pregnancy loss. METHODS We conducted a nationwide cohort study of 100,410 pregnancies (enrolled around gestational week 11) in the Danish National Birth Cohort (DNBC) during 1996-2002. Spontaneous pregnancy losses before gestational week 22 were ascertained from the Danish National Patient Registry and DNBC pregnancy interviews. Using the national drinking water quality-monitoring database Jupiter, we estimated the individual and time-specific nitrate exposure by linking geocoded maternal residential addresses with water supply areas. The nitrate exposure was analyzed in spline models using a log-transformed continuous level or classified into five categories. We used Cox proportional hazards models to estimate associations between nitrate and pregnancy loss and used gestational age (days) as the time scale, adjusting for demographic, health, and lifestyle variables. RESULTS No consistent associations were found when investigating the exposure as a categorical variable and null findings were also found in trimester specific analyses. In the spline model using the continuous exposure variable, a modestly increased hazard of pregnancy loss was observed for the first trimester at nitrate exposures between 1 and 10 mg/L, with the highest. adjusted hazard ratio at 5 mg/L of nitrate of 1.16 (95% CI: 1.01, 1.34). This trend was attenuated in the higher exposure ranges. CONCLUSION No association was seen between drinking water nitrate and the risk of pregnancy loss when investigating the exposure as a categorical variable. When we modelled the exposure as a continuous variable, a dose-dependent association was found between drinking water nitrate exposure in the first trimester and the risk of pregnancy loss. Very early pregnancy losses were not considered in this study, and whether survival bias influenced the results should be further explored.
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Affiliation(s)
- Ninna Hinchely Ebdrup
- Department of Obstetrics and Gynecology, Horsens Fertility Clinic, Horsens, Denmark.
- Department of Public Health, Aarhus University, Aarhus, Denmark.
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.
| | - Jörg Schullehner
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Geological Survey of Denmark and Greenland, Aarhus, Denmark
| | - Ulla Breth Knudsen
- Department of Obstetrics and Gynecology, Horsens Fertility Clinic, Horsens, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Zeyan Liew
- Department of Environmental Health Sciences, Yale School of Public Health, New Haven, CT, USA
- Yale Center for Perinatal, Pediatric, and Environmental Epidemiology, Yale School of Public Health, New Haven, CT, USA
| | - Anne Marie Ladehoff Thomsen
- Department of Public Health, Aarhus University, Aarhus, Denmark
- DEFACTUM - Public Health & Health Services Research, Central Denmark Region, Aarhus, Denmark
| | - Julie Lyngsø
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Department of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark
| | - Bjørn Bay
- Department of Obstetrics and Gynecology, Horsens Fertility Clinic, Horsens, Denmark
- Maigaard Fertility Clinic, Aarhus, Denmark
| | - Linn Håkonsen Arendt
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Department of Obstetrics and Gynecology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Torben Sigsgaard
- Department of Public Health, Aarhus University, Aarhus, Denmark
- Centre for Integrated Register-Based Research Aarhus University, Aarhus, Denmark
- Danish Big Data Centre for Environment and Health (BERTHA), Aarhus University, Aarhus, Denmark
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3
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Vigeh M, Yunesian M, Matsukawa T, Shamsipour M, Jeddi MZ, Rastkari N, Hassanvand MS, Shariat M, Kashani H, Pirjani R, Effatpanah M, Shirazi M, Shariatpanahi G, Ohtani K, Yokoyama K. Prenatal blood levels of some toxic metals and the risk of spontaneous abortion. JOURNAL OF ENVIRONMENTAL HEALTH SCIENCE & ENGINEERING 2021; 19:357-363. [PMID: 34150240 PMCID: PMC8172701 DOI: 10.1007/s40201-020-00608-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 12/29/2020] [Indexed: 05/19/2023]
Abstract
High-level toxic metal exposure has become rare in the recent years. Although, it has not known whether relatively lower exposure may adversely affect human reproductive system. Spontaneous abortion (SA) is a serious reproductive problem, which, in many cases, the cause(s) is not clearly understood. To assess the relationship between prenatal blood level of metals and SA risk, we compared blood concentration of some heavy metals in samples taken from mothers recruited in Tehran Environment and Neurodevelopmental Defects (TEND) study conducted on apparently healthy pregnant women in Tehran, Iran who subsequently experienced spontaneous abortion with mothers who their pregnancy ended to live births. During early gestation, 206 women were enrolled to the survey and followed up till fetal abortion or baby deliveries occur. Blood metal concentrations were measured using an inductively coupled plasma mass spectrometer. The mean blood levels of lead, antimony, and nickel were higher in SA than ongoing pregnancy; however, this difference was not statistically significant. When adjusted for covariates, the logistic regression analysis showed significant association between maternal age and the risk of SA in all models. Among toxic metals only antimony had a noticeable positive relation with the risk of SA (OR: 1.65, 95% CI:1.08-2.52, P value: 0.02). Pearson's correlation coefficient showed significant (P < 0.05) positive correlations among prenatal blood metals levels, except for nickel. Although the present study failed to provide strong evidence for the effects of toxic metals on the occurrence of SA at the relatively low-levels, these metals should be avoided in women who plan pregnancy and/or during the early stages of gestation to prevent the chance of adverse effects.
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Affiliation(s)
- Mohsen Vigeh
- Maternal, Fetal and Neonatal Research Center, Family Health Institute, Tehran University of Medical Sciences, Tehran, Iran
- Department of Epidemiology and Environmental Health, Juntendo University Faculty of Medicine, Tokyo, Japan
- Occupational Epidemiology, National Institute of Occupational Safety and Health, Kanagawa, Japan
| | - Masud Yunesian
- Department of Research Methodology and Data Analysis, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Takehise Matsukawa
- Department of Epidemiology and Environmental Health, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Mansour Shamsipour
- Department of Research Methodology and Data Analysis, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Zare Jeddi
- Division of Toxicology, Wageningen University & Research, Stippeneng 4, 6708 E Wageningen, the Netherlands
| | - Noushin Rastkari
- Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Sadegh Hassanvand
- Center for Air Pollution Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Mamak Shariat
- Maternal, Fetal and Neonatal Research Center, Family Health Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Homa Kashani
- Department of Research Methodology and Data Analysis, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran
| | - Reihaneh Pirjani
- Obstetrics and Gynecology Department, Arash Women’s Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mahboobeh Shirazi
- Maternal, Fetal and Neonatal Research Center, Family Health Institute, Tehran University of Medical Sciences, Tehran, Iran
| | | | - Katsumi Ohtani
- Occupational Epidemiology, National Institute of Occupational Safety and Health, Kanagawa, Japan
| | - Kazuhito Yokoyama
- Department of Epidemiology and Environmental Health, Juntendo University Faculty of Medicine, Tokyo, Japan
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Lu H, Yang HL, Zhou WJ, Lai ZZ, Qiu XM, Fu Q, Zhao JY, Wang J, Li DJ, Li MQ. Rapamycin prevents spontaneous abortion by triggering decidual stromal cell autophagy-mediated NK cell residence. Autophagy 2020; 17:2511-2527. [PMID: 33030400 DOI: 10.1080/15548627.2020.1833515] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Deficiency in decidualization has been widely regarded as an important cause of spontaneous abortion. Generalized decidualization also includes massive infiltration and enrichment of NK cells. However, the underlying mechanism of decidual NK (dNK) cell residence remains largely unknown. Here, we observe that the increased macroautophagy/autophagy of decidual stromal cells (DSCs) during decidualization, facilitates the adhesion and retention of dNK cells during normal pregnancy. Mechanistically, this process is mediated through activation of the MITF-TNFRSF14/HVEM signaling, and further upregulation of multiple adhesion adhesions (e.g. Selectins and ICAMs) in a MMP9-dependent manner. Patients with unexplained spontaneous abortion display insufficient DSC autophagy and dNK cell residence. In addition, poor vascular remodeling of placenta, low implantation number and high ratio of embryo loss are observed in NK cell depletion mice. In therapeutic studies, low doses of rapamycin, a known autophagy inducer that significantly promotes endometrium autophagy and NK cell residence, and improves embryo absorption in spontaneous abortion mice models, which should be dependent on the activation of MITF-TNFRSF14/HVEM-MMP9-adhension molecules axis. This observation reveals novel molecular mechanisms underlying DSCs autophagy-driven dNK cell residence, and provides a potential therapeutic strategy to prevent spontaneous abortion.Abbreviations: ACTA2/αSMA: actin alpha 2, smooth muscle; ATG: autophagy-related; ATG5over ESC: ATG5-overexpressed ESCs; BTLA: B and T lymphocyte associated; CDH1: cadherin 1; CDH5: cadherin 5; CXCL12: C-X-C motif chemokine ligand 12; dNK: decidual NK; DIC: decidual immune cell; DSC: decidual stromal cell; EOMES: eomesodermin; ESC: endometrial stromal cell; FCGR3A/CD16: Fc fragment of IgG receptor IIIa; HUVEC: human umbilical vein endothelial cell; ICAM: intercellular cell adhesion molecule; ILC: innate lymphoid cell; ITGB1: integrin subunit beta 1; ITGA2: integrin subunit alpha 2; IPA: Ingenuity Pathway Analysis; KIR2DL1: killer cell immunoglobulin like receptor, two Ig domains and long cytoplasmic tail 1; KLRD1/CD94: killer cell lectin like receptor D1; KLRK1/NKG2D: killer cell lectin like receptor K1; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; 3-MA: 3-methyladenine; MITF: melanocyte inducing transcription factor; MiT-TFE: microphthalmia family of bHLH-LZ transcription factors; MMP9: matrix metalloproteinase 9; MTOR: mechanistic target of rapamycin kinase; NCAM1/CD56: neural cell adhesion molecule 1; NCR2/NKp44: natural cytotoxicity triggering receptor 2; NK: natural killer; KLRB1/NK1.1: killer cell lectin like receptor B1; NP: normal pregnancy; PBMC: peripheral blood mononuclear cell; PECAM1/CD31: platelet and endothelial cell adhesion molecule 1; pNK: peripheral blood NK; PRF1/Perforin: Perforin 1; PTPRC/CD45: protein tyrosine phosphatase receptor type C; Rapa: rapamycin; rh-TNFSF14/LIGHT: recombinant human TNFSF14/LIGHT; SA: spontaneous abortion; SELE: selectin E; SELP: selectin P; SELL: selectin L; siATG5 DSCs: ATG5-silenced DSCs; siTNFRSF14/HVEM DSCs: TNFRSF14/HVEM-silenced DSCs; TBX21/T-bet: T-box transcription factor 21; SQSTM1/p62: sequestosome 1; TNFRSF14/HVEM: TNF receptor superfamily member 14; TNFSF14/LIGHT: TNF superfamily member 14; uNK: uterine NK; UIC: uterine immune cell; USC: uterine stromal cell; VCAM1: vascular cell adhesion molecule 1; VIM: vimentin.
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Affiliation(s)
- Han Lu
- NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Hui-Li Yang
- Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Wen-Jie Zhou
- Center of Reproductive Medicine of Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, People's Republic of China
| | - Zhen-Zhen Lai
- Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Xue-Min Qiu
- Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Qiang Fu
- Department of Immunology, Binzhou Medical College, Yantai, People's Republic of China
| | - Jian-Yuan Zhao
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan University, Shanghai, People's Republic of China.,Institute of Metabolism and Integrative Biology (IMIB), School of Life Sciences, Fudan University, Shanghai, People's Republic of China
| | - Jian Wang
- NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Da-Jin Li
- NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
| | - Ming-Qing Li
- NHC Key Lab of Reproduction Regulation (Shanghai Institute of Planned Parenthood Research), Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Laboratory for Reproductive Immunology, Institute of Obstetrics and Gynecology, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China.,Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases, Hospital of Obstetrics and Gynecology, Shanghai Medical School, Fudan University, Shanghai, People's Republic of China
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5
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Association between Drinking Water Nitrate and Adverse Reproductive Outcomes: A Systematic PRISMA Review. WATER 2020. [DOI: 10.3390/w12082287] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
One in six couples experience fertility problems. Environmental factors may affect reproductive health; however, evidence is lacking regarding drinking water nitrates and outcomes of male and female fertility. The aim of this study was to investigate if exposure to nitrates in drinking water is associated with adverse reproductive outcomes in humans, and animals of fertile age. We conducted a systematic literature search and included case-control studies, cohort studies, and randomized control trials reporting on the association between drinking water nitrate exposure of men, women, or animals and adverse reproductive outcomes, specified as: Semen quality parameters, time to pregnancy (TTP), pregnancy rates, assisted reproductive technologies (ART), and spontaneous abortion. Findings were reported in a narrative synthesis. A total of 12 studies were included. The only human study included reported a decrease in spontaneous abortion at any detectable nitrate level. Overall, the 11 included animal studies support a potential negative effect on semen quality parameters but report equivocal results on TTP and number of offspring produced, and higher risk of spontaneous abortion. In conclusion, animal studies indicate possible effects on semen quality parameters and spontaneous abortion. However, with a few studies, including some with methodological limitations and small sample sizes, caution must be applied when interpreting these results.
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6
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Harris SM, Jin Y, Loch-Caruso R, Padilla IY, Meeker JD, Bakulski KM. Identification of environmental chemicals targeting miscarriage genes and pathways using the comparative toxicogenomics database. ENVIRONMENTAL RESEARCH 2020; 184:109259. [PMID: 32143025 PMCID: PMC7103533 DOI: 10.1016/j.envres.2020.109259] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 01/30/2020] [Accepted: 02/13/2020] [Indexed: 05/02/2023]
Abstract
BACKGROUND Miscarriage is a prevalent public health issue and many events occur before women are aware of their pregnancy, complicating research design. Thus, risk factors for miscarriage are critically understudied. Our goal was to identify environmental chemicals with a high number of interactions with miscarriage genes, based on known toxicogenomic responses. METHODS We used miscarriage (MeSH: D000022) and chemical gene lists from the Comparative Toxicogenomics Database in human, mouse, and rat. We assessed enrichment for gene ontology biological processes among the miscarriage genes. We prioritized chemicals (n = 25) found at Superfund sites or in the blood or urine pregnant women. For chemical-disease gene sets of sufficient size (n = 13 chemicals, n = 20 comparisons), chi-squared enrichment tests and proportional reporting ratios (PRR) were calculated. We cross-validated enrichment results. RESULTS Miscarriage was annotated with 121 genes and overrepresented in inflammatory response (q = 0.001), collagen metabolic process (q = 1 × 10-13), cell death (q = 0.02), and vasculature development (q = 0.005) pathways. The number of unique genes annotated to a chemical ranged from 2 (bromacil) to 5607 (atrazine). In humans, all chemicals tested were highly enriched for miscarriage gene overlap (all p < 0.001; parathion PRR = 7, cadmium PRR = 6.5, lead PRR = 3.9, arsenic PRR = 3.5, atrazine PRR = 2.8). In mice, highest enrichment (p < 0.001) was observed for naphthalene (PRR = 16.1), cadmium (PRR = 12.8), arsenic (PRR = 11.6), and carbon tetrachloride (PRR = 7.7). In rats, we observed highest enrichment (p < 0.001) for cadmium (PRR = 8.7), carbon tetrachloride (PRR = 8.3), and dieldrin (PRR = 5.3). Our findings were robust to 1000 permutations each of variable gene set sizes. CONCLUSION We observed chemical gene sets (parathion, cadmium, naphthalene, carbon tetrachloride, arsenic, lead, dieldrin, and atrazine) were highly enriched for miscarriage genes. Exposures to chemicals linked to miscarriage, and thus linked to decreased probability of live birth, may limit the inclusion of fetuses susceptible to adverse birth outcomes in epidemiology studies. Our findings have critical public health implications for successful pregnancies and the interpretation of adverse impacts of environmental chemical exposures on pregnancy.
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Affiliation(s)
- Sean M Harris
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Yuan Jin
- Department of Biostatistics, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Rita Loch-Caruso
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Ingrid Y Padilla
- Department of Civil Engineering and Surveying, University of Puerto Rico, Mayagüez, Puerto Rico
| | - John D Meeker
- Department of Environmental Health Sciences, School of Public Health, University of Michigan, Ann Arbor, MI, USA
| | - Kelly M Bakulski
- Department of Epidemiology, School of Public Health, University of Michigan, Ann Arbor, MI, USA.
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7
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Hudon Thibeault AA, Sanderson JT, Vaillancourt C. Serotonin-estrogen interactions: What can we learn from pregnancy? Biochimie 2019; 161:88-108. [PMID: 30946949 DOI: 10.1016/j.biochi.2019.03.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/28/2019] [Indexed: 02/07/2023]
Abstract
We have reviewed the scientific literature related to four diseases in which to serotonin (5-HT) is involved in the etiology, herein named 5-HT-linked diseases, and whose prevalence is influenced by estrogenic status: depression, migraine, irritable bowel syndrome and eating disorders. These diseases all have in common a sex-dimorphic prevalence, with women more frequently affected than men. The co-occurrence between these 5-HT-linked diseases suggests that they have common physiopathological mechanisms. In most 5-HT-linked diseases (except for anorexia nervosa and irritable bowel syndrome), a decrease in the serotonergic tone is observed and estrogens are thought to contribute to the improvement of symptoms by stimulating the serotonergic system. Human pregnancy is characterized by a unique 5-HT and estrogen synthesis by the placenta. Pregnancy-specific disorders, such as hyperemesis gravidarum, gestational diabetes mellitus and pre-eclampsia, are associated with a hyperserotonergic state and decreased estrogen levels. Fetal programming of 5-HT-linked diseases is a complex phenomenon that involves notably fetal-sex differences, which suggest the implication of sex steroids. From a mechanistic point of view, we hypothesize that estrogens regulate the serotonergic system, resulting in a protective effect against 5-HT-linked diseases, but that, in turn, 5-HT affects estrogen synthesis in an attempt to retrieve homeostasis. These two processes (5-HT and estrogen biosynthesis) are crucial for successful pregnancy outcomes, and thus, a disruption of this 5-HT-estrogen relationship may explain pregnancy-specific pathologies or pregnancy complications associated with 5-HT-linked diseases.
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Affiliation(s)
- Andrée-Anne Hudon Thibeault
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada; Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (Cinbiose), Université du Québec à Montréal, C.P.8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada.
| | - J Thomas Sanderson
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada.
| | - Cathy Vaillancourt
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada; Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (Cinbiose), Université du Québec à Montréal, C.P.8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada.
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8
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Lenters V, Iszatt N, Forns J, Čechová E, Kočan A, Legler J, Leonards P, Stigum H, Eggesbø M. Early-life exposure to persistent organic pollutants (OCPs, PBDEs, PCBs, PFASs) and attention-deficit/hyperactivity disorder: A multi-pollutant analysis of a Norwegian birth cohort. ENVIRONMENT INTERNATIONAL 2019; 125:33-42. [PMID: 30703609 DOI: 10.1016/j.envint.2019.01.020] [Citation(s) in RCA: 116] [Impact Index Per Article: 23.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 11/20/2018] [Accepted: 01/07/2019] [Indexed: 05/27/2023]
Abstract
BACKGROUND Numerous ubiquitous environmental chemicals are established or suspected neurotoxicants, and infants are exposed to a mixture of these during the critical period of brain maturation. However, evidence for associations with the risk of attention-deficit/hyperactivity disorder (ADHD) is sparse. We investigated early-life chemical exposures in relation to ADHD. METHODS We used a birth cohort of 2606 Norwegian mother-child pairs enrolled 2002-2009 (HUMIS), and studied a subset of 1199 pairs oversampled for child neurodevelopmental outcomes. Concentrations of 27 persistent organic pollutants (14 polychlorinated biphenyls, 5 organochlorine pesticides, 6 brominated flame retardants, and 2 perfluoroalkyl substances) were measured in breast milk, reflecting the child's early-life exposures. We estimated postnatal exposures in the first 2 years of life using a pharmacokinetic model. Fifty-five children had a clinical diagnosis of ADHD (hyperkinetic disorder) by 2016, at a median age of 13 years. We used elastic net penalized logistic regression models to identify associations while adjusting for co-exposure confounding, and subsequently used multivariable logistic regression models to obtain effect estimates for the selected exposures. RESULTS Breast milk concentrations of perfluorooctane sulfonate (PFOS) and β‑hexachlorocyclohexane (β-HCH) were associated with increased odds of ADHD: odds ratio (OR) = 1.77, 95% confidence interval (CI): 1.16, 2.72 and OR = 1.75, 95% CI: 1.22, 2.53, per interquartile range increase in ln-transformed concentrations, respectively. Stronger associations were observed among girls than boys for PFOS (pinteraction = 0.025). p,p'‑Dichlorodiphenyltrichloroethane (p,p'-DDT) levels were associated with lower odds of ADHD (OR = 0.64, 95% CI: 0.42, 0.97). Hexachlorobenzene (HCB) had a non-linear association with ADHD, with increasing risk in the low-level exposure range that switched to a decreasing risk at concentrations above 8 ng/g lipid. Postnatal exposures showed similar results, whereas effect estimates for other chemicals were weaker and imprecise. CONCLUSIONS In a multi-pollutant analysis of four classes of chemicals, early-life exposure to β-HCH and PFOS was associated with increased risk of ADHD, with suggestion of sex-specific effects for PFOS. The unexpected inverse associations between p,p'-DDT and higher HCB levels and ADHD could be due to live birth bias; alternatively, results may be due to chance findings.
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Affiliation(s)
- Virissa Lenters
- Department of Environmental Exposure and Epidemiology, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213 Oslo, Norway.
| | - Nina Iszatt
- Department of Environmental Exposure and Epidemiology, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213 Oslo, Norway.
| | - Joan Forns
- Department of Environmental Exposure and Epidemiology, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213 Oslo, Norway.
| | - Eliška Čechová
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice; 753/5, 625 00 Brno, Czech Republic.
| | - Anton Kočan
- Research Centre for Toxic Compounds in the Environment, Faculty of Science, Masaryk University, Kamenice; 753/5, 625 00 Brno, Czech Republic.
| | - Juliette Legler
- Institute for Environmental Studies, VU University Amsterdam, De Boelelaan 1087, 1081 HV Amsterdam, the Netherlands.
| | - Pim Leonards
- Institute for Environmental Studies, VU University Amsterdam, De Boelelaan 1087, 1081 HV Amsterdam, the Netherlands.
| | - Hein Stigum
- Department of Non-Communicable Diseases, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213 Oslo, Norway.
| | - Merete Eggesbø
- Department of Environmental Exposure and Epidemiology, Norwegian Institute of Public Health, P.O. Box 222 Skøyen, 0213 Oslo, Norway.
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Kusneniwar GN, Whelan RM, Betha K, Robertson JM, Ramidi PR, Balasubramanian K, Kamasamudram V, Haggerty CL, Bunker CH, Reddy PS. Cohort Profile: The Longitudinal Indian Family hEalth (LIFE) Pilot Study, Telangana State, India. Int J Epidemiol 2018; 46:788-789j. [PMID: 27649805 DOI: 10.1093/ije/dyw174] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/26/2016] [Indexed: 11/14/2022] Open
Affiliation(s)
- G N Kusneniwar
- SHARE INDIA, MediCiti Institute of Medical Sciences, Ghanpur, Telangana State-501401, India
| | - R Margaret Whelan
- University of Pittsburgh, Department of Epidemiology, Pittsburgh, PA, USA
- Tulane University School of Medicine, New Orleans, LA, USA
| | - Kalpana Betha
- SHARE INDIA, MediCiti Institute of Medical Sciences, Ghanpur, Telangana State-501401, India
| | - Jamie M Robertson
- University of Pittsburgh, Department of Epidemiology, Pittsburgh, PA, USA
- STRATUS Center for Medical Simulation, Brigham and Women's Hospital, Boston, MA, USA
| | | | - K Balasubramanian
- SHARE INDIA, MediCiti Institute of Medical Sciences, Ghanpur, Telangana State-501401, India
| | | | | | - Clareann H Bunker
- University of Pittsburgh, Department of Epidemiology, Pittsburgh, PA, USA
| | - P S Reddy
- SHARE INDIA, MediCiti Institute of Medical Sciences, Ghanpur, Telangana State-501401, India
- University of Pittsburgh, School of Medicine, Pittsburgh, PA, USA
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Koutsothanassis C, Agiannitopoulos K, Georgoutsou M, Bampali K, Hatzaki A, Lamnissou K. Genetic variant in the CYP19 gene and recurrent spontaneous abortions. GENE REPORTS 2017. [DOI: 10.1016/j.genrep.2016.11.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Caserta D, Ralli E, Matteucci E, Bordi G, Soave I, Marci R, Moscarini F. The influence of socio-demographic factors on miscarriage incidence among Italian and immigrant women: a critical analysis from Italy. J Immigr Minor Health 2016; 17:843-51. [PMID: 24627173 DOI: 10.1007/s10903-014-0005-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Miscarriage is one of the most relevant adverse events in women's reproductive life. The purpose of the study was to describe miscarriage trend in Italy during the last years among Italian and immigrant women, to compare miscarriage rates of the two groups and to evaluate the effect of age, nationality and educational level on the incidence of having a miscarriage. Then, a brief critical review of other miscarriage risk factors was performed. This study is based on ISTAT database. All data were analyzed through the statistical software SPSS and the following analytical techniques were used: multivariate logistic regression, factorial analysis of variance and Chi square test. Immigrant miscarriage rates resulted higher than Italian ones and they decreased from 2003 to 2009 unlike Italian ones, which remained unchanged. The effect of maternal age on the miscarriage incidence resulted different, depending on the nationality; for Italian women it increased with increasing of age and for immigrant women the opposite trend was found. Moreover, miscarriage incidence resulted significantly different depending on the maternal educational level. Whereas immigrant women considered did not belong to the same ethnic group, biological or genetic factors underlying these differences were excluded and a socioeconomic explanation was provided. Finally, in order to provide more complete information, other miscarriage risk factors were discussed through a brief review of the literature.
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Affiliation(s)
- Donatella Caserta
- Department of Obstetrics, Gynecological and Urological Sciences, Sant'Andrea Hospital, Sapienza University of Rome, Via di Grottarossa 1035-1039, 00189, Rome, Italy,
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Liew Z, Olsen J, Cui X, Ritz B, Arah OA. Bias from conditioning on live birth in pregnancy cohorts: an illustration based on neurodevelopment in children after prenatal exposure to organic pollutants. Int J Epidemiol 2015; 44:345-54. [PMID: 25604449 DOI: 10.1093/ije/dyu249] [Citation(s) in RCA: 152] [Impact Index Per Article: 16.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Only 60-70% of fertilized eggs may result in a live birth, and very early fetal loss mainly goes unnoticed. Outcomes that can only be ascertained in live-born children will be missing for those who do not survive till birth. In this article, we illustrate a common bias structure (leading to 'live-birth bias') that arises from studying the effects of prenatal exposure to environmental factors on long-term health outcomes among live births only in pregnancy cohorts. To illustrate this we used prenatal exposure to perfluoroalkyl substances (PFAS) and attention-deficit/hyperactivity disorder (ADHD) in school-aged children as an example. PFAS are persistent organic pollutants that may impact human fecundity and be toxic for neurodevelopment. We simulated several hypothetical scenarios based on characteristics from the Danish National Birth Cohort and found that a weak inverse association may appear even if PFAS do not cause ADHD but have a considerable effect on fetal survival. The magnitude of the negative bias was generally small, and adjusting for common causes of the outcome and fetal loss can reduce the bias. Our example highlights the need to identify the determinants of pregnancy loss and the importance of quantifying bias arising from conditioning on live birth in observational studies.
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Affiliation(s)
- Zeyan Liew
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA
| | - Jørn Olsen
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA
| | - Xin Cui
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA
| | - Beate Ritz
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA
| | - Onyebuchi A Arah
- Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA Department of Epidemiology, Fielding School of Public Health, University of California Los Angeles (UCLA), Los Angeles, CA, USA, Department of Public Health, Section for Epidemiology, University of Aarhus, Aarhus, Denmark, Department of Neurology, Geffen School of Medicine, UCLA, Los Angeles, CA, USA, Academic Medical Center, University of Amsterdam, Amsterdam, The Netherlands and UCLA Center for Health Policy Research, Los Angeles, CA, USA
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Hudon Thibeault AA, Deroy K, Vaillancourt C, Sanderson JT. A unique co-culture model for fundamental and applied studies of human fetoplacental steroidogenesis and interference by environmental chemicals. ENVIRONMENTAL HEALTH PERSPECTIVES 2014; 122:371-377. [PMID: 24486430 PMCID: PMC3984223 DOI: 10.1289/ehp.1307518] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 01/29/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND Experimental tools for studying the complex steroidogenic interactions that occur between placenta and fetus during human pregnancy are extremely limited. OBJECTIVES We aimed to develop a co-culture model to study steroidogenesis by the human fetoplacental unit and its disruption by exposure to environmental contaminants. METHODS We cultured BeWo human choriocarcinoma cells, representing the villous cytotrophoblast, and H295R human adrenocortical carcinoma cells, representing the fetal unit, in a carefully adapted co-culture medium. We placed H295R cells in 24-well plates and BeWo cells on transwell inserts with or without pesticide treatment (atrazine or prochloraz) and assessed CYP19 activity and hormonal production after 24 hr of co-culture. RESULTS The co-culture exhibited the steroidogenic profile of the fetoplacental unit, allowing a synergistic production of estradiol and estriol (but not of estrone) of 133.3 ± 11.3 pg/mL and 440.8 ± 44.0 pg/mL, respectively. Atrazine and prochloraz had cell-type specific effects on CYP19 activity and estrogen production in co-culture. Atrazine induced CYP19 activity and estrogen production in H295R cells only, but did not affect overall estrogen production in co-culture, whereas prochloraz inhibited CYP19 activity exclusively in BeWo cells and reduced estrogen production in co-culture by almost 90%. In contrast, prochloraz did not affect estradiol or estrone production in BeWo cells in monoculture. These differential effects underline the relevance of our co-culture approach to model fetoplacental steroidogenesis. CONCLUSIONS The co-culture of H295R and BeWo cells creates a unique in vitro model to reproduce the steroidogenic cooperation between fetus and placenta during pregnancy and can be used to study the endocrine-disrupting effects of environmental chemicals.
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Slama R, Cordier S. Impact des facteurs environnementaux physiques et chimiques sur le déroulement et les issues de grossesse. ACTA ACUST UNITED AC 2013; 42:413-44. [DOI: 10.1016/j.jgyn.2013.02.012] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2012] [Revised: 02/06/2013] [Accepted: 02/28/2013] [Indexed: 11/29/2022]
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15
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Agay-Shay K, Friger M, Linn S, Peled A, Amitai Y, Peretz C. Air pollution and congenital heart defects. ENVIRONMENTAL RESEARCH 2013; 124:28-34. [PMID: 23623715 DOI: 10.1016/j.envres.2013.03.005] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2012] [Revised: 03/19/2013] [Accepted: 03/20/2013] [Indexed: 05/21/2023]
Abstract
Environmental factors such as ambient air pollution have been associated with congenital heart defects. The aim of this study was to investigate the association between gestational exposure to air pollution and the risk of congenital heart defects. We conducted a registry-based cohort study with a total of 135,527 live- and still-births in the Tel-Aviv region during 2000-2006. We used a Geographic Information System-based spatiotemporal approach with weekly inverse distance weighting modeling to evaluate associations between gestational exposure to ambient air pollution during weeks 3-8 of pregnancy and the risk for congenital heart defects. The following pollutants were studied: carbon monoxide, nitrogen-dioxide, ozone, sulfur-dioxide and particulate matter with aerodynamic diameter smaller than 10 μm and 2.5 μm (PM10, PM2.5 respectively). Logistic models, adjusted for socio-demographic covariates were used to evaluate the associations. We found that maternal exposure to increased concentrations of PM10 was associated with multiple congenital heart defects (adjusted OR 1.05, 95% CI: 1.01 to 1.10 for 10 μg/m(3) increment). An inverse association was observed between concentrations of PM2.5 and isolated patent ductus arteriosus (adjusted OR 0.78, 95% CI: 0.68 to 0.91 for 5 µg/m(3) increment). Sensitivity analyses showed that results were consistent. Generally there were no evidence for an association between gaseous air pollutants and congenital heart defects.Our results for PM10 and congenital heart defects confirm results from previous studies. The results for PM2.5 need further investigations.
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Affiliation(s)
- Keren Agay-Shay
- University of Haifa, School of Public Health, Faculty of Social Welfare and Health sciences, Mount Carmel, Haifa 31905, Israel.
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Remes O, Whitten AN, Sabarre KA, Phillips KP. University students' perceptions of environmental risks to infertility. Sex Health 2012; 9:377-83. [PMID: 22877598 DOI: 10.1071/sh11090] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 01/27/2012] [Indexed: 12/19/2022]
Abstract
BACKGROUND Canadian young adults may be at risk of future infertility due to the high incidence of sexually transmissible infections (STIs) in this population. Young adults' perceptions of environmental risks, including contaminants, STIs and lifestyle habits on infertility, have not been examined. We have therefore designed a qualitative study to explore risk perceptions, awareness and knowledge of common environmental risk factors for infertility in a multiethnic sample of young adults. METHODS Semistructured interviews were carried out with 40 university undergraduate students (16 men and 24 women) in Ottawa, Canada, followed by qualitative analysis of interview transcripts to identify major themes. RESULTS The following broad themes described participants' risk perceptions about infertility and (1) environmental contaminants: knowledge gaps, media reports and negative perception of chemicals; (2) STIs: superficial understanding of their role in infertility, general awareness, associations with sexual behaviours and knowledge gaps; and (3) lifestyle: protective benefits of healthy lifestyle, dose or exposure effects for smoking and alcohol, and knowledge gaps. Students demonstrated a superficial understanding of environmental risks, at times relying on media reports and anecdotal information to support their beliefs. CONCLUSIONS This next generation of potential infertility patients exhibits a general understanding of environmental risks to infertility; however, young adults are overly optimistic that healthy lifestyle behaviours will safeguard future fertility. STIs represent the most significant modifiable risk factors for this age group; a message that can be supported by sexual and reproductive health education and promotion with greater emphasis on the long-term outcomes of STIs, including infertility.
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Affiliation(s)
- Olivia Remes
- Faculty of Health Sciences, University of Ottawa, Ottawa, Ontario, Canada
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Kadhel P, Monnier P, Boucoiran I, Chaillet N, Fraser WD. Organochlorine Pollutants and Female Fertility. Reprod Sci 2012; 19:1246-59. [DOI: 10.1177/1933719112446077] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Philippe Kadhel
- Department of Obstetrics and Gynecology, Centre Hospitalier et Universitaire de Pointe à Pitre / Abymes, Service de Gynécologie et Obstétrique, Route de Chauvel, Pointe-à-Pitre, France
- Inserm (Institut National de la Santé et de la Recherche Médicale), U1085, IRSET, Campus de Fouillole, Pointe-à-Pitre, France
| | - Patricia Monnier
- MUHC Reproductive Centre, Department of Obstetrics and Gynecology, Royal Victoria Hospital, McGill University Health Centre, Quebec, Canada
| | - Isabelle Boucoiran
- Department of Obstetrics and Gynecology, Research Center of Sainte-Justine Hospital, University of Montreal, Ste-Catherine, Montreal, Quebec, Canada
| | - Nils Chaillet
- Department of Obstetrics and Gynecology, Research Center of Sainte-Justine Hospital, University of Montreal, Ste-Catherine, Montreal, Quebec, Canada
| | - William D. Fraser
- Department of Obstetrics and Gynecology, Research Center of Sainte-Justine Hospital, University of Montreal, Ste-Catherine, Montreal, Quebec, Canada
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Vigeh M, Yokoyama K, Kitamura F, Afshinrokh M, Beygi A, Niroomanesh S. Early pregnancy blood lead and spontaneous abortion. Women Health 2011; 50:756-66. [PMID: 21170817 DOI: 10.1080/03630242.2010.532760] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Although evidence tends to suggest that high levels of lead exposure increase the risk of spontaneous abortion, we do not yet know whether moderate- to low-level exposure elevates risk. Among 351 women (aged 16 to 35 years, with single pregnancies) who were registered for a longitudinal study, 15 (4.3%) women experienced spontaneous abortion after the 12th week of gestation and before the 20th week. We collected participants' blood samples during the first trimester of pregnancy (8-12 weeks) for lead measurement by inductively coupled plasma-mass spectrometry. Mean ± standard deviation of blood lead was 3.8 ± 2.0 μg/dl (range 1.0-20.5 μg/dl) with a geometric mean of 3.5 μg/dl. Mean blood lead concentrations did not differ significantly between spontaneous abortion cases and ongoing pregnancies (3.51 ± 1.42 and 3.83 ± 1.99 μg/dl, respectively). The findings suggest that in apparently healthy women, low blood lead levels (mean < 5 μg/dl) measured in early pregnancy may not be a risk factor for spontaneous abortion.
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Affiliation(s)
- Mohsen Vigeh
- Department of Hazard Assessment, National Institute of Occupational Safety and Health, Kawasaki, Japan.
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Abstract
PURPOSE OF REVIEW Summarize recent studies exploring the relationship between paternal and maternal environmental exposures to chemicals before, at the time of and after conception to adverse developmental outcomes including preterm birth, death, structural and functional abnormalities and growth restriction. RECENT FINDINGS Recent studies have demonstrated that human pregnancy and development are vulnerable to environmental exposures of the father and mother to chemical, biological and physical agents. Exposures associated with adverse developmental outcomes include air and water pollution, chemicals in foods, occupational exposures, agricultural chemicals, metals, persistent and volatile organics. Developmental endpoints which are linked with these exposures include growth restriction, functional abnormalities, structural abnormalities, preterm delivery and death. Despite this general understanding we still have incomplete knowledge concerning most exposures and the biological interactions responsible for impaired development and preterm delivery. SUMMARY Whereas single genes and individual chemical exposures are responsible for some instances of adverse pregnancy outcome or developmental disease, gene-environment interactions are responsible for the majority. These gene-environment interactions may occur in the father, mother, placenta or fetus, suggesting that critical attention be given to maternal and paternal exposures and gene expression as they relate to the mode of action of the putative developmental toxicant both prior to and during pregnancy.
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