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Chen M, Liang S, Zhou H, Xu Y, Qin X, Hu Z, Wang X, Qiu L, Wang W, Zhang Y, Ying Z. Prenatal and postnatal mothering by diesel exhaust PM 2.5-exposed dams differentially program mouse energy metabolism. Part Fibre Toxicol 2017; 14:3. [PMID: 28100227 PMCID: PMC5423412 DOI: 10.1186/s12989-017-0183-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Accepted: 01/11/2017] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND Obesity is one of the leading threats to global public health. It is consequent to abnormal energy metabolism. Currently, it has been well established that maternal exposure to environmental stressors that cause inappropriate fetal development may have long-term adverse effects on offspring energy metabolism in an exposure timing-dependent manner, known as developmental programming of health and diseases paradigm. Rapidly increasing evidence has indicated that maternal exposure to ambient fine particles (PM2.5) correlates to abnormal fetal development. In the present study, we therefore assessed whether maternal exposure to diesel exhaust PM2.5 (DEP), the major component of ambient PM2.5 in urban areas, programs offspring energy metabolism, and further examined how the timing of exposure impacts this programming. RESULTS The growth trajectory of offspring shows that although prenatal maternal exposure to DEP did not impact the birth weight of offspring, it significantly decreased offspring body weight from postnatal week 2 until the end of observation. This weight loss effect of prenatal maternal exposure to DEP coincided with decreased food intake but not alteration in brown adipose tissue (BAT) morphology. The hypophagic effect of prenatal maternal exposure to DEP was in concord with decreased hypothalamic expression of an orexigenic peptide NPY, suggesting that the prenatal maternal exposure to DEP impacts offspring energy balance primarily through programming of food intake. Paradoxically, the reduced body weight resulted from prenatal maternal exposure to DEP was accompanied by increased mass of epididymal adipose tissue, which was due to hyperplasia as morphological analysis did not observe any hypertrophy. In direct contrast, the postnatal mothering by DEP-exposed dams increased offspring body weight during lactation and adulthood, paralleled by markedly increased fat accumulation and decreased UCP1 expression in BAT but not alteration in food intake. The weight gain induced by postnatal mothering by DEP-exposed dams was also expressed as an increased adiposity. But it concurred with a marked hypertrophy of adipocytes. CONCLUSION Prenatal and postnatal mothering by DEP-exposed dams differentially program offspring energy metabolism, underscoring consideration of the exposure timing when examining the adverse effects of maternal exposure to ambient PM2.5.
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Affiliation(s)
- Minjie Chen
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, 200032 China
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
| | - Shuai Liang
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
- Department of Bile Pancreatic Surgery, Xiangya Hospital, Central South University, Changsha, Hunan 410008 China
| | - Huifen Zhou
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
- Department of Pathology, Hubei University of Science and Technology, Xianning, Hubei 437100 China
| | - Yanyi Xu
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, 200032 China
| | - Xiaobo Qin
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
| | - Ziying Hu
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
- Department of Endocrinology, the People’s Hospital of Zhengzhou University (Henan Provincial People’s Hospital), Zhengzhou, Henan 450003 China
| | - Xiaoke Wang
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
- Department of Occupational and Environmental Health, School of Public Health, Nantong University, Nantong, 226019 China
| | - Lianglin Qiu
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
- Department of Occupational and Environmental Health, School of Public Health, Nantong University, Nantong, 226019 China
| | - Wanjun Wang
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, 200032 China
| | - Yuhao Zhang
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai, 200032 China
| | - Zhekang Ying
- Department of Environmental Health, School of Public Health, Fudan University, Shanghai, 200032 China
- Department of Medicine Cardiology Division, School of Medicine, University of Maryland, 20 Penn St. HSFII S022, Baltimore, MD 21201 USA
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Wang W, Zhong C, Huang L, Zhou X, Chen R, Wu J, Li X, Xiong T, Liu C, Xiao M, Yang X, Hao L, Yang N, Wei S. Prenatal NO2exposure and ultrasound measures of foetal growth: a prospective cohort study in Wuhan, China. Occup Environ Med 2017; 74:204-210. [DOI: 10.1136/oemed-2016-103980] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2016] [Revised: 12/09/2016] [Accepted: 12/19/2016] [Indexed: 11/04/2022]
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Liu Y, Wang L, Wang F, Li C. Effect of Fine Particulate Matter (PM2.5) on Rat Placenta Pathology and Perinatal Outcomes. Med Sci Monit 2016; 22:3274-80. [PMID: 27629830 PMCID: PMC5036383 DOI: 10.12659/msm.897808] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Fine particulate matter with aerodynamic diameters smaller than 2.5 μm (PM2.5) has been reported to cause adverse effects on human health. Evidence has shown the association between PM2.5 exposure and adverse perinatal outcomes, and the most common method is epidemiological investigation. We wished to investigate the impact of PM2.5 on placenta and prenatal outcomes and its related mechanisms in a rat model. Material/Methods Pregnant rats were exposed to a low PM2.5 dose (15 mg/kg) with intratracheal instillation at pregnant day 10 and day 18, while the controls received an equivalent volume normal saline. All rats received cesarean section 24 h after the last intratracheal instillation and were sacrificed with anesthesia. Blood routine tests (BRT) and interleukin-6 (IL-6) were detected for analyzing inflammation and blood coagulation. Placenta tissue sections underwent pathologic examination, and the levels of homogenate glutathione peroxidase (GSH-Px) and methane dicarboxylic aldehyde (MDA) were determined for oxidative stress estimation. Results Increased absorbed blastocysts, and lower maternal weight gain and fetal weight were found in the PM2.5 exposure group compared to controls (p<0.05). Exposure to PM2.5 caused a significant increase of blood mononuclear cells (PBMC), platelets, and IL-6 levels (P<0.01). There were no differences in GSH-Px and MDA of placenta homogenate between the 2 groups (P>0.05). Placenta pathological examination demonstrated thrombus and chorioamnionitis in the PM2.5 exposure group. Conclusions PM2.5 exposure can result in placental pathological changes and adverse perinatal outcomes. The placental inflammation and hypercoagulability with vascular thrombosis may play important roles in placental impairment, but oxidative stress appears to be less important.
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Affiliation(s)
- Yi Liu
- Department of Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
| | - Ledan Wang
- Department of Gynaecology and Obstetrics, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China (mainland)
| | - Fang Wang
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Baotou Medical College, Baotou, Neimenggu, China (mainland)
| | - Changzhong Li
- Department of Gynaecology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, China (mainland)
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Teng C, Wang Z, Yan B. Fine particle-induced birth defects: Impacts of size, payload, and beyond. ACTA ACUST UNITED AC 2016; 108:196-206. [PMID: 27581067 DOI: 10.1002/bdrc.21136] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2016] [Accepted: 08/16/2016] [Indexed: 11/09/2022]
Abstract
Worldwide epidemiological studies have shown that exposures to particulate matters (PMs), such as PM2.5 or PM10 , during pregnancy cause birth defects in the newborn. Although mechanistic understanding of such effects are not available, recent research using murine models highlights some key progress: (1) toxicity caused by PMs is a combined effects of particles and the adsorbed toxic pollutants, such as heavy metals, persistent organic pollutants, bacteria, and virus. Fine particles may hold on to pollutants and, therefore, reduce their toxicity or enhance the toxicity by carrying pollutants crossing the placental barrier; (2) smaller size, certain particle surface chemistry modifications, early developmental stage of placenta, and maternal diseases all aggravate PM-induced birth defects; (3) molecular events involved in such toxicity are begin to emerge: induction of oxidative stress, DNA damage, and alteration of molecular signaling or epigenetic events are some possible causes. Despite this progress, a clear understanding of PM-induced birth defects awaits further breakthroughs on many fronts, including epidemiological studies, animal models, nanotoxicity, and molecular mechanism investigations. Birth Defects Research (Part C) 108:196-206, 2016. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Chuanfeng Teng
- Chuanfeng Teng and Bing Yan are from the School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Zhiping Wang
- Chuanfeng Teng and Bing Yan are from the School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.,Zhiping Wang is from the School of Public Health, Shandong University, Jinan, 250100, China
| | - Bing Yan
- Chuanfeng Teng and Bing Yan are from the School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
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Zheng T, Zhang J, Sommer K, Bassig BA, Zhang X, Braun J, Xu S, Boyle P, Zhang B, Shi K, Buka S, Liu S, Li Y, Qian Z, Dai M, Romano M, Zou A, Kelsey K. Effects of Environmental Exposures on Fetal and Childhood Growth Trajectories. Ann Glob Health 2016; 82:41-99. [PMID: 27325067 PMCID: PMC5967632 DOI: 10.1016/j.aogh.2016.01.008] [Citation(s) in RCA: 104] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023] Open
Abstract
Delayed fetal growth and adverse birth outcomes are some of the greatest public health threats to this generation of children worldwide because these conditions are major determinants of mortality, morbidity, and disability in infancy and childhood and are also associated with diseases in adult life. A number of studies have investigated the impacts of a range of environmental conditions during pregnancy (including air pollution, endocrine disruptors, persistent organic pollutants, heavy metals) on fetal and child development. The results, while provocative, have been largely inconsistent. This review summarizes up to date epidemiologic studies linking major environmental pollutants to fetal and child development and suggested future directions for further investigation.
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Affiliation(s)
- Tongzhang Zheng
- Department of Epidemiology, Brown School of Public Health, Providence, RI.
| | - Jie Zhang
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | | | - Bryan A Bassig
- National Cancer Institute, Division of Cancer Epidemiology & Genetics, Occupational and Environmental Epidemiology Branch, Bethesda, MD
| | - Xichi Zhang
- George Washington University, Washington, DC
| | - Jospeh Braun
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | - Shuangqing Xu
- Tongji School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
| | - Peter Boyle
- International Prevention Research Institute, Lyon, France
| | - Bin Zhang
- Wuhan Medical & Health Center for Women and Children, Wuhan, Hubei, P.R. China
| | - Kunchong Shi
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | - Stephen Buka
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | - Siming Liu
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | - Yuanyuan Li
- Department of Epidemiology, Brown School of Public Health, Providence, RI; Tongji School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, P.R. China
| | - Zengmin Qian
- College for Public Health & Social Justice, Saint Louis University, St. Louis, MO
| | - Min Dai
- China National Cancer Center, Chinese Academy of Medical Sciences, Beijing, P.R. China
| | - Megan Romano
- Department of Epidemiology, Brown School of Public Health, Providence, RI
| | - Aifen Zou
- Wuhan Medical & Health Center for Women and Children, Wuhan, Hubei, P.R. China
| | - Karl Kelsey
- Department of Epidemiology, Brown School of Public Health, Providence, RI
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