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Straughen JK, Loveless I, Chen Y, Burmeister C, Lamerato L, Lemke LD, O’Leary BF, Reiners JJ, Sperone FG, Levin AM, Cassidy-Bushrow AE. The Impact of Environmental Benzene, Toluene, Ethylbenzene, and Xylene Exposure on Blood-Based DNA Methylation Profiles in Pregnant African American Women from Detroit. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2024; 21:256. [PMID: 38541258 PMCID: PMC10970495 DOI: 10.3390/ijerph21030256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 04/20/2024]
Abstract
African American women in the United States have a high risk of adverse pregnancy outcomes. DNA methylation is a potential mechanism by which exposure to BTEX (benzene, toluene, ethylbenzene, and xylenes) may cause adverse pregnancy outcomes. Data are from the Maternal Stress Study, which recruited African American women in the second trimester of pregnancy from February 2009 to June 2010. DNA methylation was measured in archived DNA from venous blood collected in the second trimester. Trimester-specific exposure to airshed BTEX was estimated using maternal self-reported addresses and geospatial models of ambient air pollution developed as part of the Geospatial Determinants of Health Outcomes Consortium. Among the 64 women with exposure and outcome data available, 46 differentially methylated regions (DMRs) were associated with BTEX exposure (FDR adjusted p-value < 0.05) using a DMR-based epigenome-wide association study approach. Overall, 89% of DMRs consistently exhibited hypomethylation with increasing BTEX exposure. Biological pathway analysis identified 11 enriched pathways, with the top 3 involving gamma-aminobutyric acid receptor signaling, oxytocin in brain signaling, and the gustation pathway. These findings highlight the potential impact of BTEX on DNA methylation in pregnant women.
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Affiliation(s)
- Jennifer K. Straughen
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Department of Obstetrics, Gynecology and Reproductive Biology, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Ian Loveless
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Yalei Chen
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Charlotte Burmeister
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
| | - Lois Lamerato
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Lawrence D. Lemke
- Department of Earth and Atmospheric Sciences, Central Michigan University, Brooks Hall 314, Mount Pleasant, MI 48859, USA;
| | - Brendan F. O’Leary
- Department of Civil and Environmental Engineering, Wayne State University, 2100 Engineering Building, Detroit, MI 48202, USA; (B.F.O.); (F.G.S.)
- Department of Biology, Wayne State University, 5047 Gullen Mall, Detroit, MI 48202, USA
| | - John J. Reiners
- Center for Urban Responses to Environmental Stressors, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA;
- Institute of Environmental Health Sciences, Wayne State University, 6135 Woodward Ave, Detroit, MI 48202, USA
| | - F. Gianluca Sperone
- Department of Civil and Environmental Engineering, Wayne State University, 2100 Engineering Building, Detroit, MI 48202, USA; (B.F.O.); (F.G.S.)
- Department of Environmental Science and Geology, Wayne State University, 4841 Cass Avenue, Detroit, MI 48201, USA
| | - Albert M. Levin
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
| | - Andrea E. Cassidy-Bushrow
- Department of Public Health Sciences, Henry Ford Health, 1 Ford Place, Detroit, MI 48202, USA (L.L.); (A.M.L.); (A.E.C.-B.)
- Henry Ford Health + Michigan State University Health Sciences, Detroit, MI 48202, USA
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, East Lansing, MI 48824, USA
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Li J, Lu Q, de Toledo RA, Lu Y, Shim H. Effect of toluene concentration and hydrogen peroxide on Pseudomonas plecoglossicida cometabolizing mixture of cis-DCE and TCE in soil slurry. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2015; 37:985-995. [PMID: 25963576 DOI: 10.1007/s10653-015-9707-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 04/28/2015] [Indexed: 06/04/2023]
Abstract
An indigenous Pseudomonas sp., isolated from the regional contaminated soil and identified as P. plecoglossicida, was evaluated for its aerobic cometabolic removal of cis-1,2-dichloroethylene (cis-DCE) and trichloroethylene (TCE) using toluene as growth substrate in a laboratory-scale soil slurry. The aerobic simultaneous bioremoval of the cis-DCE/TCE/toluene mixture was studied under different conditions. Results showed that an increase in toluene concentration level from 300 to 900 mg/kg prolonged the lag phase for the bacterial growth, while the bioremoval extent for cis-DCE, TCE, and toluene declined as the initial toluene concentration increased. In addition, the cometabolic bioremoval of cis-DCE and TCE was inhibited by the presence of hydrogen peroxide as the additional oxygen source, while the bioremoval of toluene (900 mg/kg) was enhanced after 9 days of incubation. The subsequent addition of toluene did not improve the cometabolic bioremoval of cis-DCE and TCE. The obtained results would help to enhance the applicability of bioremediation technology to the mixed waste contaminated sites.
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Affiliation(s)
- Junhui Li
- College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou, 510642, China
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, China
- Key Laboratory of the Ministry of Land and Resources for Construction Land Transformation, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Provincial Key Laboratory of Land Use and Consolidation, South China Agricultural University, Guangzhou, 510642, China
| | - Qihong Lu
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, China
| | - Renata Alves de Toledo
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, China
| | - Ying Lu
- College of Natural Resources and Environmental Science, South China Agricultural University, Guangzhou, 510642, China.
| | - Hojae Shim
- Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau SAR, 999078, China.
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Rubol S, Silver WL, Bellin A. Hydrologic control on redox and nitrogen dynamics in a peatland soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2012; 432:37-46. [PMID: 22705904 DOI: 10.1016/j.scitotenv.2012.05.073] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2012] [Revised: 05/21/2012] [Accepted: 05/22/2012] [Indexed: 06/01/2023]
Abstract
Soils are a dominant source of nitrous oxide (N(2)O), a potent greenhouse gas. However, the complexity of the drivers of N(2)O production and emissions has hindered our ability to predict the magnitude and spatial dynamics of N(2)O fluxes. Soil moisture can be considered a key driver because it influences oxygen (O(2)) supply, which feeds back on N(2)O sources (nitrification versus denitrification) and sinks (reduction to dinitrogen). Soil water content is directly linked to O(2) and redox potential, which regulate microbial metabolism and chemical transformations in the environment. Despite its importance, only a few laboratory studies have addressed the effects of hydrological transient dynamics on nitrogen (N) cycling in the vadose zone. To further investigate these aspects, we performed a long term experiment in a 1.5 m depth soil column supplemented by chamber experiments. With this experiment, we aimed to investigate how soil moisture dynamics influence redox sensitive N cycling in a peatland soil. As expected, increased soil moisture lowered O(2) concentrations and redox potential in the soil. The decline was more severe for prolonged saturated conditions than for short events and at deep than at the soil surface. Gaseous and dissolved N(2)O, dissolved nitrate (NO(3)(-)) and ammonium (NH(4)(+)) changed considerably along the soil column profile following trends in soil O(2) and redox potential. Hot spots of N(2)O concentrations corresponded to high variability in soil O(2) in the upper and lower parts of the column. Results from chamber experiments confirmed high NO(3)(-) reduction potential in soils, particularly from the bottom of the column. Under our experimental conditions, we identified a close coupling of soil O(2) and N(2)O dynamics, both of which lagged behind soil moisture changes. These results highlight the relationship among soil hydrologic properties, redox potential and N cycling, and suggest that models working at a daily scale need to consider soil O(2) dynamics in addition to soil moisture dynamics to accurately predict patterns in N(2)O fluxes.
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Affiliation(s)
- Simonetta Rubol
- Dipartimento di Ingegneria Civile ed Ambientale, Università di Trento, Via Mesiano 77, I 38123 Trento, Italy.
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Elliott P, Peakman TC. The UK Biobank sample handling and storage protocol for the collection, processing and archiving of human blood and urine. Int J Epidemiol 2008; 37:234-44. [PMID: 18381398 DOI: 10.1093/ije/dym276] [Citation(s) in RCA: 449] [Impact Index Per Article: 28.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND UK Biobank is a large prospective study in the UK to investigate the role of genetic factors, environmental exposures and lifestyle in the causes of major diseases of late and middle age. Extensive data and biological samples are being collected from 500,000 participants aged between 40 and 69 years. The biological samples that are collected and how they are processed and stored will have a major impact on the future scientific usefulness of the UK Biobank resource. AIMS The aim of the UK Biobank sample handling and storage protocol is to specify methods for the collection and storage of participant samples that give maximum scientific return within the available budget. Processing or storage methods that, as far as can be predicted, will preclude current or future assays have been avoided. METHODS The protocol was developed through a review of the literature on sample handling and processing, wide consultation within the academic community and peer review. Protocol development addressed which samples should be collected, how and when they should be processed and how the processed samples should be stored to ensure their long-term integrity. The recommended protocol was extensively tested in a series of validation studies. UK Biobank collects about 45 ml blood and 9 ml of urine with minimal local processing from each participant using the vacutainer system. A variety of preservatives, anti-coagulants and clot accelerators is used appropriate to the expected end use of the samples. Collection of other material (hair, nails, saliva and faeces) was also considered but rejected for the full cohort. Blood and urine samples from participants are transported overnight by commercial courier to a central laboratory where they are processed and aliquots of urine, plasma, serum, white cells and red cells stored in ultra-low temperature archives. Aliquots of whole blood are also stored for potential future production of immortalized cell lines. A standard panel of haematology assays is completed on whole blood from all participants, since such assays need to be conducted on fresh samples (whereas other assays can be done on stored samples). By the end of the recruitment phase, 15 million sample aliquots will be stored in two geographically separate archives: 9.5 million in a -80 degrees C automated archive and 5.5 million in a manual liquid nitrogen archive at -180 degrees C. Because of the size of the study and the numbers of samples obtained from participants, the protocol stipulates a highly automated approach for the processing and storage of samples. Implementation of the processes, technology, systems and facilities has followed best practices used in manufacturing industry to reduce project risk and to build in quality and robustness. The data produced from sample collection, processing and storage are highly complex and are managed by a commercially available LIMS system fully integrated with the entire process. CONCLUSION The sample handling and storage protocol adopted by UK Biobank provides quality assured and validated methods that are feasible within the available funding and reflect the size and aims of the project. Experience from recruiting and processing the first 40,000 participants to the study demonstrates that the adopted methods and technologies are fit-for-purpose and robust.
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Affiliation(s)
- Paul Elliott
- Department of Epidemiology and Public Health, Faculty of Medicine, Imperial College London, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
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