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Torbatian S, Saleh M, Xu J, Minet L, Gamage SM, Yazgi D, Yamanouchi S, Roorda MJ, Hatzopoulou M. Societal Co-benefits of Zero-Emission Vehicles in the Freight Industry. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:7814-7825. [PMID: 38668733 DOI: 10.1021/acs.est.3c08867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
This study was set in the Greater Toronto and Hamilton Area (GTHA), where commercial vehicle movements were assigned across the road network. Implications for greenhouse gas (GHG) emissions, air quality, and health were examined through an environmental justice lens. Electrification of light-, medium-, and heavy-duty trucks was assessed to identify scenarios associated with the highest benefits for the most disadvantaged communities. Using spatially and temporally resolved commercial vehicle movements and a chemical transport model, changes in air pollutant concentrations under electric truck scenarios were estimated at 1-km2 resolution. Heavy-duty truck electrification reduces ambient black carbon and nitrogen dioxide on average by 10 and 14%, respectively, and GHG emissions by 10.5%. It achieves the highest reduction in premature mortality attributable to fine particulate matter chronic exposure (around 200 cases per year) compared with light- and medium-duty electrification (less than 150 cases each). The burden of all traffic in the GTHA was estimated to be around 600 cases per year. The benefits of electrification accrue primarily in neighborhoods with a high social disadvantage, measured by the Ontario Marginalization Indices, narrowing the disparity of exposure to traffic-related air pollution. Benefits related to heavy-duty truck electrification reflect the adverse impacts of diesel-fueled freight and highlight the co-benefits achieved by electrifying this sector.
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Affiliation(s)
- Sara Torbatian
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
| | - Marc Saleh
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
| | - Junshi Xu
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
| | - Laura Minet
- Department of Civil Engineering, University of Victoria, Victoria, British Columbia, Canada V8W 2Y2
| | | | - Daniel Yazgi
- Department of Research and Development, Swedish Meteorological and Hydrological Institute, Norrköping 60176, Sweden
| | - Shoma Yamanouchi
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
| | - Matthew J Roorda
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
| | - Marianne Hatzopoulou
- Department of Civil and Mineral Engineering, University of Toronto, Toronto, Ontario,Canada M5S 1A4
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Duan X, Zhang L, Liao Y, Lin Z, Guo C, Luo S, Wang F, Zou Z, Zeng Z, Chen C, Qiu J. Semaglutide alleviates gut microbiota dysbiosis induced by a high-fat diet. Eur J Pharmacol 2024; 969:176440. [PMID: 38402930 DOI: 10.1016/j.ejphar.2024.176440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 02/19/2024] [Accepted: 02/19/2024] [Indexed: 02/27/2024]
Abstract
This study investigated the effects of semaglutide (Sema) on the gut microbiota of obese mice induced with high-fat diet (HFD). Male C57BL/6 J mice aged 6 weeks were enrolled and randomly distributed to four groups, which were provided with a normal control diet (NCD,NCD + Sema) and a 60% proportion of a high-fat diet (HFD,HFD + Sema), respectively. HFD was given for 10 weeks to develop an obesity model and the intervention was lasted for 18 days. The results showed semaglutide significantly reduced body weight gain, areas under the curve (AUC) of glucose tolerance test and insulin resistance test, as well as adipose tissue weight in mice. Semaglutide effectively reduced lipid deposition and lipid droplet formation in the liver of obese mice, and regulated the expression of genes related to abnormal blood glucose regulation. Additionally, semaglutide influenced the composition of gut microbiota, mitigating the microbial dysbiosis induced by a high-fat diet by impacting the diversity of the gut microbiota. After the high-fat diet intervention, certain strains such as Akkermansia, Faecalibaculum, and Allobaculum were significantly decreased, while Lachnospiraceae and Bacteroides were significantly increased. However, the application of semaglutide restored the lost flora and suppressed excessive bacterial abundance. Moreover, semaglutide increased the content of tight junction proteins and repaired the damage to intestinal barrier function caused by the high-fat diet intervention. Furthermore, correlation analysis revealed inverse relationship among Akkermansia levels and weight gain, blood glucose levels, and various obesity indicators. Correlation analysis also showed that Akkermansia level was negatively correlated with weight gain, blood glucose levels and a range of obesity indicators. This phenomenon may explain the anti-obesity effect of semaglutide, which is linked to alterations in gut microbiota, specifically an increase in the abundance of Akkermansia. In summary, our findings indicate that semaglutide has the potential to alleviate gut microbiota dysbiosis, and the gut microbiota may contribute to the obesity-related effects of this drug.
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Affiliation(s)
- Xinhao Duan
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Lei Zhang
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Chongqing Health Service Center, Chongqing, 400020, China
| | - Yi Liao
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Zijing Lin
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Changxin Guo
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Sen Luo
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Fu Wang
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China
| | - Zhen Zou
- Molecular Biology Laboratory of Respiratory Diseases, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, China
| | - Zhijun Zeng
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China; Research Center for Environment and Human Health, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health, Chongqing Medical University, Chongqing, 400016, China.
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Abdillah SFI, Wang YF. Ambient ultrafine particle (PM 0.1): Sources, characteristics, measurements and exposure implications on human health. ENVIRONMENTAL RESEARCH 2023; 218:115061. [PMID: 36525995 DOI: 10.1016/j.envres.2022.115061] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2022] [Revised: 08/28/2022] [Accepted: 12/11/2022] [Indexed: 06/17/2023]
Abstract
The problem of ultrafine particles (UFPs; PM0.1) has been prevalent since the past decades. In addition to become easily inhaled by human respiratory system due to their ultrafine diameter (<100 nm), ambient UFPs possess various physicochemical properties which make it more toxic. These properties vary based on the emission source profile. The current development of UFPs studies is hindered by the problem of expensive instruments and the inexistence of standardized measurement method. This review provides detailed insights on ambient UFPs sources, physicochemical properties, measurements, and estimation models development. Implications on health impacts due to short-term and long-term exposure of ambient UFPs are also presented alongside the development progress of potentially low-cost UFPs sensors which can be used for future UFPs studies references. Current challenge and future outlook of ambient UFPs research are also discussed in this review. Based on the review results, ambient UFPs may originate from primary and secondary sources which include anthropogenic and natural activities. In addition to that, it is confirmed from various chemical content analysis that UFPs carry heavy metals, PAHs, BCs which are toxic in its nature. Measurement of ambient UFPs may be performed through stationary and mobile methods for environmental profiling and exposure assessment purposes. UFPs PNC estimation model (LUR) developed from measurement data could be deployed to support future epidemiological study of ambient UFPs. Low-cost sensors such as bipolar ion and ionization sensor from common smoke detector device may be further developed as affordable instrument to monitor ambient UFPs. Recent studies indicate that short-term exposure of UFPs can be associated with HRV change and increased cardiopulmonary effects. On the other hand, long-term UFPs exposure have positive association with COPD, CVD, CHF, pre-term birth, asthma, and also acute myocardial infarction cases.
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Affiliation(s)
- Sultan F I Abdillah
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Center for Environmental Risk Management, Chung Yuan Christian University, Taoyuan, 32023, Taiwan
| | - Ya-Fen Wang
- Department of Environmental Engineering, Chung Yuan Christian University, Taoyuan, 32023, Taiwan; Center for Environmental Risk Management, Chung Yuan Christian University, Taoyuan, 32023, Taiwan.
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Prenatal exposure to titanium dioxide nanoparticles induces persistent neurobehavioral impairments in maternal mice that is associated with microbiota-gut-brain axis. Food Chem Toxicol 2022; 169:113402. [PMID: 36108982 DOI: 10.1016/j.fct.2022.113402] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 07/25/2022] [Accepted: 08/29/2022] [Indexed: 11/22/2022]
Abstract
Gestational exposure to titanium dioxide nanoparticles (TiO2NPs) has been widely reported to have deleterious effects on the brain functions of offspring. However, little attention has been paid to the neurotoxic effects of TiO2NPs on maternal body after parturition. The pregnant mice were orally administrated with TiO2NPs at 150 mg/kg from gestational day 8-21. The potential effects of TiO2NPs on the neurobehaviors were evaluated at postnatal day 60. The gut microbiota, morphological alterations of intestine and brain, and other indicators that involved in gut-brain axis were all assessed to investigate the underlying mechanisms. The results demonstrated that exposure to TiO2NPs during pregnancy caused the persistent neurobehavioral impairments of maternal mice after delivery for 60 days, mainly including behavioural changes, pathological changes in hippocampus, cortex and intestine. Our data also showed that persistent dysfunction and tissue injuries were probably associated with the disruption of gut-brain axis, manifested by the shift in the composition of gut microbial community, alteration of Sstr1, inhibition of enteric neurons and reduction of diamine oxidase contents in maternal mice. These findings provide a novel insight that regulation of gut microecology may be an alternative strategy for the protection against the neurotoxicity of TiO2NPs in pregnant women.
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Gong JY, Holt MG, Hoet PHM, Ghosh M. Neurotoxicity of four frequently used nanoparticles: a systematic review to reveal the missing data. Arch Toxicol 2022; 96:1141-1212. [DOI: 10.1007/s00204-022-03233-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 01/20/2022] [Indexed: 12/27/2022]
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Garner KL, Bowdridge EC, Griffith JA, DeVallance E, Seman MG, Engels KJ, Groth CP, Goldsmith WT, Wix K, Batchelor TP, Nurkiewicz TR. Maternal Nanomaterial Inhalation Exposure: Critical Gestational Period in the Uterine Microcirculation is Angiotensin II Dependent. Cardiovasc Toxicol 2022; 22:167-180. [PMID: 35066857 PMCID: PMC9013006 DOI: 10.1007/s12012-021-09712-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 12/07/2021] [Indexed: 11/03/2022]
Abstract
Maternal inhalation exposure to engineered nanomaterials (ENM) has been associated with microvascular dysfunction and adverse cardiovascular responses. Pregnancy requires coordinated vascular adaptation and growth that are imperative for survival. Key events in pregnancy hallmark distinct periods of gestation such as implantation, spiral artery remodeling, placentation, and trophoblast invasion. Angiotensin II (Ang II) is a critical vasoactive mediator responsible for adaptations and is implicated in the pathology of preeclampsia. If perturbations occur during gestation, such as those caused by ENM inhalation exposure, then maternal-fetal health consequences may occur. Our study aimed to identify the period of gestation in which maternal microvascular functional and fetal health are most vulnerable. Additionally, we wanted to determine if Ang II sensitivity and receptor density is altered due to exposure. Dams were exposed to ENM aerosols (nano-titanium dioxide) during three gestational windows: early (EE, gestational day (GD) 2-6), mid (ME, GD 8-12) or late (LE, GD 15-19). Within the EE group dry pup mass decreased by 16.3% and uterine radial artery wall to lumen ratio (WLR) increased by 25.9%. Uterine radial artery response to Ang II sensitivity increased by 40.5% in the EE group. Ang II receptor density was altered in the EE and LE group with decreased levels of AT2R. We conclude that early gestational maternal inhalation exposures resulted in altered vascular anatomy and physiology. Exposure during this time-period results in altered vascular reactivity and changes to uterine radial artery WLR, leading to decreased perfusion to the fetus and resulting in lower pup mass.
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Affiliation(s)
- Krista L Garner
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Elizabeth C Bowdridge
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Julie A Griffith
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Evan DeVallance
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Madison G Seman
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Kevin J Engels
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Caroline P Groth
- Department of Epidemiology and Biostatistics, West Virginia University School of Public Health, Morgantown, WV, USA
| | - William T Goldsmith
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Kim Wix
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
| | - Thomas P Batchelor
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA
| | - Timothy R Nurkiewicz
- Department of Physiology and Pharmacology, West Virginia University School of Medicine, Morgantown, WV, USA.
- Center for Inhalation Toxicology (iTOX), West Virginia University School of Medicine, Morgantown, WV, USA.
- Department of Physiology and Pharmacology, Robert C. Byrd Health Sciences Center, West Virginia University, 64 Medical Center Drive, Morgantown, WV, 26506-9229, USA.
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Xiao J, Jiang X, Zhou Y, Sumayyah G, Zhou L, Tu B, Qin Q, Qiu J, Qin X, Zou Z, Chen C. Results of a 30-day safety assessment in young mice orally exposed to polystyrene nanoparticles. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 292:118184. [PMID: 34715478 DOI: 10.1016/j.envpol.2021.118184] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 06/13/2023]
Abstract
Polystyrene nanoparticles (PSNPs) are a newly emerging pollutant in the natural environment. However, due to the lack of sufficient toxicological studies in mammals, the potential effects of PSNPs on human health remain largely undefined. Therefore, in this study, young mice aged four weeks old were subjected to oral administration of 0, 0.2, 1, or 10 mg/kg PSNPs for 30 days. Our results demonstrated for the first time that oral exposure to PSNPs affected the expressions of mucus secretion-related genes and altered the community composition of intestinal microbiota, although this treatment did not cause behavioral impairments in young mice. No significant alterations in inflammatory or oxidative stress-related indicators were observed in the liver, lung, intestine, cortex or serum of PSNPs-treated animals. Moreover, exposure to PSNPs did not cause pathological changes in the liver, lung, or cortex tissues. Notably, although oral administration of PSNPs did not produce obvious toxic effects in the major organs of young mice, the possible toxicity of PSNPs remains unresolved and it may depend on the dose, exposure route and species. The potential hazardous effects of PSNPs still need to be systematically assessed, especially for children who are susceptible to exposure to nanoparticles.
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Affiliation(s)
- Junting Xiao
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yujian Zhou
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Golamaully Sumayyah
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Lixiao Zhou
- Department of Health Laboratory Technology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Baijie Tu
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Qizhong Qin
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhen Zou
- Molecular Biology Laboratory of Respiratory Disease, Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China; Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China; Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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8
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Zhang M, Wang C, Zhang X, Song H, Li Y. Association between exposure to air pollutants and attention-deficit hyperactivity disorder (ADHD) in children: a systematic review and meta-analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL HEALTH RESEARCH 2022; 32:207-219. [PMID: 32248699 DOI: 10.1080/09603123.2020.1745764] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
Recent studies have reached mixed conclusions regarding the association between exposure to air pollutants and attention-deficit hyperactivity disorder (ADHD). We performed systematic review and meta-analysis to determine whether air pollutants were risk factors for the development of ADHD in children. We systematically searched databases for all relevant studies up to 2 July 2019. Together, the studies indicated that exposure to PAHs (risk ratio (RR): 0.98, 95% confidence interval (CI): 0.82-1.17), NOx (RR: 1.04, 95% CI: 0.94-1.15), and PM (RR: 1.11, 95% CI: 0.93-1.33) did not have any material relationship with an increased risk of ADHD. Heterogeneity of study data was low (I2: 2.7%, P = 0.409) for studies examining PAHs, but was substantial for NOx and PM (I2: 68.4%, P = 0.007 and I2: 60.1%, P = 0.014, respectively). However, these results should be interpreted with caution since the number of epidemiological studies investigating this issue were limited.
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Affiliation(s)
- Mengjie Zhang
- Department of Children, Adolescents and Women Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Changhong Wang
- Department of Psychiatry, The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan, China
| | - Xinxin Zhang
- Department of Children, Adolescents and Women Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Huiling Song
- Department of Children, Adolescents and Women Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
| | - Yan Li
- Department of Children, Adolescents and Women Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan, China
- School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, China
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Avet C, Paul EN, Garrel G, Grange-Messent V, L'Hôte D, Denoyelle C, Corre R, Dupret JM, Lanone S, Boczkowski J, Simon V, Cohen-Tannoudji J. Carbon Black Nanoparticles Selectively Alter Follicle-Stimulating Hormone Expression in vitro and in vivo in Female Mice. Front Neurosci 2021; 15:780698. [PMID: 34938157 PMCID: PMC8685435 DOI: 10.3389/fnins.2021.780698] [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: 09/21/2021] [Accepted: 11/15/2021] [Indexed: 11/13/2022] Open
Abstract
Toxic effects of nanoparticles on female reproductive health have been documented but the underlying mechanisms still need to be clarified. Here, we investigated the effect of carbon black nanoparticles (CB NPs) on the pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), which are key regulators of gonadal gametogenesis and steroidogenesis. To that purpose, we subjected adult female mice to a weekly non-surgical intratracheal administration of CB NPs at an occupationally relevant dose over 4 weeks. We also analyzed the effects of CB NPs in vitro, using both primary cultures of pituitary cells and the LβT2 gonadotrope cell line. We report here that exposure to CB NPs does not disrupt estrous cyclicity but increases both circulating FSH levels and pituitary FSH β-subunit gene (Fshb) expression in female mice without altering circulating LH levels. Similarly, treatment of anterior pituitary or gonadotrope LβT2 cells with increasing concentrations of CB NPs dose-dependently up-regulates FSH but not LH gene expression or release. Moreover, CB NPs enhance the stimulatory effect of GnRH on Fshb expression in LβT2 cells without interfering with LH regulation. We provide evidence that CB NPs are internalized by LβT2 cells and rapidly activate the cAMP/PKA pathway. We further show that pharmacological inhibition of PKA significantly attenuates the stimulatory effect of CB NPs on Fshb expression. Altogether, our study demonstrates that exposure to CB NPs alters FSH but not LH expression and may thus lead to gonadotropin imbalance.
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Affiliation(s)
- Charlotte Avet
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
| | - Emmanuel N Paul
- Inserm U955, IMRB, U 955, Faculté de Médecine, équipe 04, Université Paris Est (UPEC), Créteil, France
| | - Ghislaine Garrel
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
| | - Valérie Grange-Messent
- Sorbonne Université, CNRS, Inserm, Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France
| | - David L'Hôte
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
| | - Chantal Denoyelle
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
| | - Raphaël Corre
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
| | | | - Sophie Lanone
- Inserm U955, IMRB, U 955, Faculté de Médecine, équipe 04, Université Paris Est (UPEC), Créteil, France
| | - Jorge Boczkowski
- Inserm U955, IMRB, U 955, Faculté de Médecine, équipe 04, Université Paris Est (UPEC), Créteil, France
| | - Violaine Simon
- Université de Paris, BFA, UMR 8251, CNRS, ERL U1133, Inserm, Paris, France
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Lin D, Fang T, Lin L, He Y, Quan H, Yang J, Chen K, Wei W. A de novo pure 21q22.3 deletion in a 9-year-old boy with buried penis: a case report and literature review. Transl Pediatr 2021; 10:2621-2629. [PMID: 34765486 PMCID: PMC8578789 DOI: 10.21037/tp-21-377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Accepted: 09/15/2021] [Indexed: 11/24/2022] Open
Abstract
21q deletion has been associated with a wide range of clinical signs, from very mild to severe phenotypes, and with the progress of genetic technology, more patients with this deletion are being diagnosed. This study reports on a 9-year-old boy with a terminal deletion of 4.5 Mb on chromosome 21 in the locus of chr21: 43531239-48119895 (GRCh37/hg19). Dark skin, a buried penis, small testes, dental caries, microcephaly, a low auricle, mental and intellectual retardation, balance disorder and pituitary and callosum dysplasia were observed. The results of a literature review and observation of similar abnormalities, including hypoplasia of corpus callosum, in two patients with non-overlapping deletion regions suggest that there are multiple gene loci regulating brain development on 21q. By comparing the overlapped deletion region in 21q22.3 cases of brain anomalies and/or gonadal dysgenesis, we concluded there were two overlapped microdeletion regions (chr21:43531239-43792093 and chr21:46625055-46884297) that may be related to brain and gonadal development. The same 16.49 Mb deletion of chr21:31578129-48119895 (GRCh37/hg19) was shared in 10 cases, and 24 cases shared the same 5.59 Mb deletion of chr21:42478130-48119895 (GRCh37/hg19) in DECIPHER (Database of Chromasomal Imbalance and Phenotype in Humans using Ensembl Resources), suggesting these were two commonly deleted regions of pure partial 21q. Those patients with the same breakpoints had different phenotypes suggesting the heterogeneity of 21q deletion.
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Affiliation(s)
- Danhong Lin
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Tuanyu Fang
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Leweihua Lin
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Yangli He
- Department of Health Care Center, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Huibiao Quan
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Jingmin Yang
- Key Laboratory of Birth Defects and Reproductive Health of National Health and Family Planning Commission (Chongqing Key Laboratory of Birth Defects and Reproductive Health, Chongqing Population and Family Planning, Science and Technology Research Institute), Chongqing, China
| | - Kaining Chen
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
| | - Weiping Wei
- Department of Endocrinology, Hainan General Hospital, Hainan Affiliated Hospital of Hainan Medical University, Haikou, China
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11
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Liu Y, Hu Q, Huang C, Cao Y. Comparison of multi-walled carbon nanotubes and halloysite nanotubes on lipid profiles in human umbilical vein endothelial cells. NANOIMPACT 2021; 23:100333. [PMID: 35559834 DOI: 10.1016/j.impact.2021.100333] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 06/15/2023]
Abstract
Tubular nanomaterials (NMs), such as multi-walled carbon nanotubes (MWCNTs) and halloysite nanotubes (HNTs), may be used in biomedicine, but previous studies showed that MWCNTs induced toxicity to endothelial cells (ECs). However, the influence of tubular NMs on EC lipid profiles has gained little attention, probably because ECs are not traditionally considered to be involved in regulating lipid homeostasis. This study compared the different effects of MWCNTs and HNTs on lipid profile changes in human umbilical vein ECs (HUVECs). The results showed that MWCNTs but not HNTs of the same mass concentrations induced cytotoxicity, ultrastuctural changes and intracellular thiol depletion. Meanwhile, only MWCNTs promoted lipid accumulation due to the induction of ER stress leading to up-regulation of fatty acid synthase (FASN). Interestingly, lipidomics results showed that the main lipid classes induced by MWCNTs but not HNTs were ceramide (Cer) and phosphatidylinositol (PI), with most of the lipid classes unaltered or even decreased after NM exposure. Then, extra Cer and PI were added to explore the implications of increase of these lipids. Adding Cer promoted the cytotoxicity of MWCNTs to HUVECs, indicating the lipotoxic role of Cer. Whereas adding PI partially increased intracellular NO and decreased interleukin-6 (IL-6) release due to MWCNT exposure, indicating the signaling role of PI. These results indicated novel roles of lipid dysfunction in NM-induced toxicity to ECs, even though ECs are not the professional cells for controlling lipid homeostasis.
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Affiliation(s)
- Yanan Liu
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang 421001, China; College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China; Key Laboratory of Environment-Friendly Chemistry and Application of Ministry of Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Qilan Hu
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang 421001, China; College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China; Key Laboratory of Environment-Friendly Chemistry and Application of Ministry of Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, China
| | - Chaobo Huang
- College of Chemical Engineering, Nanjing Forestry University (NFU), Nanjing 210037, China
| | - Yi Cao
- Hunan Province Key Laboratory of Typical Environmental Pollution and Health Hazards, School of Public Health, University of South China, Hengyang 421001, China; Key Laboratory of Environment-Friendly Chemistry and Application of Ministry of Education, Laboratory of Biochemistry, College of Chemistry, Xiangtan University, Xiangtan, 411105, China.
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12
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Ngowi EE, Wang YZ, Qian L, Helmy YASH, Anyomi B, Li T, Zheng M, Jiang ES, Duan SF, Wei JS, Wu DD, Ji XY. The Application of Nanotechnology for the Diagnosis and Treatment of Brain Diseases and Disorders. Front Bioeng Biotechnol 2021; 9:629832. [PMID: 33738278 PMCID: PMC7960921 DOI: 10.3389/fbioe.2021.629832] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Accepted: 01/25/2021] [Indexed: 12/24/2022] Open
Abstract
Brain is by far the most complex organ in the body. It is involved in the regulation of cognitive, behavioral, and emotional activities. The organ is also a target for many diseases and disorders ranging from injuries to cancers and neurodegenerative diseases. Brain diseases are the main causes of disability and one of the leading causes of deaths. Several drugs that have shown potential in improving brain structure and functioning in animal models face many challenges including the delivery, specificity, and toxicity. For many years, researchers have been facing challenge of developing drugs that can cross the physical (blood–brain barrier), electrical, and chemical barriers of the brain and target the desired region with few adverse events. In recent years, nanotechnology emerged as an important technique for modifying and manipulating different objects at the molecular level to obtain desired features. The technique has proven to be useful in diagnosis as well as treatments of brain diseases and disorders by facilitating the delivery of drugs and improving their efficacy. As the subject is still hot, and new research findings are emerging, it is clear that nanotechnology could upgrade health care systems by providing easy and highly efficient diagnostic and treatment methods. In this review, we will focus on the application of nanotechnology in the diagnosis and treatment of brain diseases and disorders by illuminating the potential of nanoparticles.
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Affiliation(s)
- Ebenezeri Erasto Ngowi
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan Provincial Engineering Centre for Tumor Molecular Medicine, Henan University, Kaifeng, China.,Department of Biological Sciences, Faculty of Science, Dar es Salaam University College of Education, Dar es Salaam, Tanzania
| | - Yi-Zhen Wang
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Lei Qian
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Yasmeen Ahmed Saleheldin Hassan Helmy
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan Provincial Engineering Centre for Tumor Molecular Medicine, Henan University, Kaifeng, China
| | - Bright Anyomi
- Brain Research Laboratory, School of Life Sciences, Henan University, Kaifeng, China
| | - Tao Li
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China
| | - Meng Zheng
- International Joint Center for Biomedical Innovation, School of Life Sciences, Henan University, Kaifeng, China
| | - En-She Jiang
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,School of Nursing and Health, Institutes of Nursing and Health, Henan University, Kaifeng, China
| | - Shao-Feng Duan
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,School of Pharmacy, Institute for Innovative Drug Design and Evaluation, Henan University, Kaifeng, China
| | - Jian-She Wei
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,Brain Research Laboratory, School of Life Sciences, Henan University, Kaifeng, China
| | - Dong-Dong Wu
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,School of Stomatology, Henan University, Kaifeng, China
| | - Xin-Ying Ji
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, China.,Kaifeng Key Laboratory of Infection and Biological Safety, School of Basic Medical Sciences, Henan University, Kaifeng, China
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13
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Teng W, Yang Z, Wang S, Xiong D, Chen Y, Wu Z. Toxicity evaluation of mesoporous silica particles Santa Barbara No. 15 amorphous in human umbilical vein endothelial cells: influence of particle morphology. J Appl Toxicol 2021; 41:1467-1478. [DOI: 10.1002/jat.4137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/12/2020] [Accepted: 12/18/2020] [Indexed: 12/15/2022]
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14
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Pregnancy exposure to carbon black nanoparticles induced neurobehavioral deficits that are associated with altered m6A modification in offspring. Neurotoxicology 2020; 81:40-50. [DOI: 10.1016/j.neuro.2020.07.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 06/19/2020] [Accepted: 07/13/2020] [Indexed: 12/18/2022]
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15
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Chen J, Zhang S, Chen C, Jiang X, Qiu J, Qiu Y, Zhang Y, Wang T, Qin X, Zou Z, Chen C. Crosstalk of gut microbiota and serum/hippocampus metabolites in neurobehavioral impairments induced by zinc oxide nanoparticles. NANOSCALE 2020; 12:21429-21439. [PMID: 33079119 DOI: 10.1039/d0nr04563b] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The gut microbiome can be readily influenced by external factors, such as nanomaterials. However, the role of the microbiota-gut-brain axis in nanomaterials-induced neurotoxicity remains largely unknown. In this study, young mice aged 4 weeks were treated with either a vehicle solution or 26 mg kg-1 zinc oxide nanoparticles (ZnONPs) by intragastric administration for 30 days. The neurobehavioral alterations were assessed by the Morris water maze and open field test. Gut microbiota and the metabolites in both blood and hippocampus were detected using 16S rRNA sequencing and liquid chromatography-mass spectrometry metabolomics, respectively. The results demonstrated that oral exposure to ZnONPs resulted in neurobehavioral impairments in young mice, mainly manifested by spatial learning and memory deficits, and the inhibition of locomotor activity. Intriguingly, ZnONPs caused a marked disturbance of the gut microbial composition, but did not alter the α-diversity of the microbiota. The correlation analysis further revealed that neurobehavioral impairments induced by ZnONPs were closely associated with a perturbation in the gut microbiota composition that were specific to changes of neurobehavior-related genes (such as Bdnf and Dlg4), and correlated with serum and hippocampal metabolites. We also identified a unique metabolite [DG(15:0/0:0/22:4n6)] that linked relationships among the gut microbiota, metabolites and neurobehavior-related genes. Taken together, our results illustrated that oral exposure to ZnONPs not only altered the gut microbiome community, but also substantially disturbed the metabolic profiles leading to neurobehavioral impairments via the microbiota-gut-brain axis. These findings will provide a novel view for understanding the neurotoxicity of ZnONPs, and are helpful for identifying potential prevention and treatment strategies.
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Affiliation(s)
- Jianjun Chen
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Shanshan Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Chang Chen
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yu Qiu
- Department of Neurology, The Affiliated University-Town Hospital of Chongqing Medical University, Chongqing, 401331, People's Republic of China
| | - Yujia Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Tianxiong Wang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China. and Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China. and Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China
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16
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Zhang S, Jiang X, Cheng S, Fan J, Qin X, Wang T, Zhang Y, Zhang J, Qiu Y, Qiu J, Zou Z, Chen C. Titanium dioxide nanoparticles via oral exposure leads to adverse disturbance of gut microecology and locomotor activity in adult mice. Arch Toxicol 2020; 94:1173-1190. [PMID: 32162007 DOI: 10.1007/s00204-020-02698-2] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 03/02/2020] [Indexed: 12/22/2022]
Abstract
Titanium dioxide nanoparticles (TiO2NPs) have been widely used as food additives in daily life. However, the impact of oral intake of TiO2NPs on the nervous system is largely unknown. In this study, 7-week-old mice were treated with either vehicle or TiO2NPs suspension solution at 150 mg/kg by intragastric administration for 30 days. Our results demonstrated that oral exposure to TiO2NPs resulted in aberrant excitement of enteric neurons, although unapparent pathological changes were observed in gut. We also found the richness and evenness of gut microbiota were remarkably decreased and the gut microbial community compositions were significantly changed in the TiO2NP-treated group as compared with vehicle controls. Interestingly, oral exposure to TiO2NPs was capable to induce the inhibitory effects on locomotor activity, but it did not lead to significant change on the spatial learning and memory ability. We further revealed the mechanism that TiO2NPs could specifically cause locomotor dysfunction by elevating the excitement of enteric neuron, which might spread to brain via gut-brain communication by vagal pathway. However, inflammation response, enteric neurotransmitter 5-HT and major gut peptides might not be involved in this pathological process. Together, these findings provide valuable insights into the novel mechanism of TiO2NP-induced neurotoxicity. Understanding the microbiota-gut-brain axis will provide the foundation for potential therapeutic or prevention approaches against TiO2NP-induced gut and brain-related disorders.
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Affiliation(s)
- Shanshan Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jingchuan Fan
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Tianxiong Wang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yujia Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jun Zhang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Yu Qiu
- Department of Neurology, The Affiliated University-Town Hospital of Chongqing Medical University, Chongqing, 401331, People's Republic of China
| | - Jingfu Qiu
- Department of Health Laboratory Technology, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
- Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
- Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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17
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He M, Jiang X, Zou Z, Qin X, Zhang S, Guo Y, Wang X, Tian X, Chen C. Exposure to carbon black nanoparticles increases seizure susceptibility in male mice. Nanotoxicology 2020; 14:595-611. [PMID: 32091294 DOI: 10.1080/17435390.2020.1728412] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Carbon black nanoparticles (CBNPs) can enter the central nervous system through blood circulation and olfactory nerves, affecting brain development or increasing neurological disease susceptibility. However, whether CBNPs exposure affects seizure is unclear. Herein, mice were exposed to two different doses of CBNPs (21 and 103 μg/animal) based on previous studies and the maximum exposure limitation (4 mg/m3) in occupational workplaces set by the Chinese government. In the pentylenetetrazol (PTZ) and kainic acid (KA) seizure models, high-dose CBNPs exposure increased seizure susceptibility in both models and increased spontaneous recurrent seizure (SRS) frequency in the KA model. In vivo local field potential (LFP) recording in KA model mice revealed that both low-dose and high-dose CBNPs exposure increased seizure-like event (SLE) frequency in the SRS interval but shortened SLE duration. Intriguingly, H&E staining and Nissl staining on brain tissue revealed that CBNPs exposure did not cause significant brain tissue morphology or neuronal damage. Detection of inflammatory factors, such as TNF-α, TGF-β1, IL-1β, and IL-6, in brain tissue showed that only high dose of CBNPs exposure increased the expression of cortical TGF-β1. By using the primary cultured neurons, we observed that CBNPs exposure not only significantly decreased the expression of the neuronal marker MAP2 but also enhanced the levels of action potential frequency in the neurons. In general, CBNPs exposure can affect abnormal epileptic discharges during the seizure interval and enhance susceptibility to frequent seizures. Our findings suggest that minimizing CBNPs exposure may be a potential way to prevent or ease seizure.
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Affiliation(s)
- Miaoqing He
- Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China.,Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Chinese Institute for Brain Research, Peking University, Beijing, China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, China.,Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Shanshan Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Yi Guo
- Department of Neurology, First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Xuefeng Wang
- Beijing Institute of Brain Disorders, Capital Medical University, Beijing, China.,Collaborative Innovation Center for Brain Disorders, Capital Medical University, Beijing, China.,Department of Neurology, First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Xin Tian
- Department of Neurology, First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, Chongqing, China
| | - Chengzhi Chen
- Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, China.,Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, China
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18
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Liu X, Wang B, Jiang X, Zhang J, Tang Q, Zhang Y, Qin X, Chen C, Zou Z. Heterozygous Disruption of Beclin 1 Alleviates Zinc Oxide Nanoparticles-Induced Disturbance of Cholesterol Biosynthesis in Mouse Liver. Int J Nanomedicine 2019; 14:9865-9875. [PMID: 31849474 PMCID: PMC6913297 DOI: 10.2147/ijn.s224179] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
Purpose Liver is regarded as one of the primary target organs for zinc oxide nanoparticles (ZnONPs) toxicity. Since liver represents the leading site for de novo cholesterol biosynthesis in mammals, the injuries of liver could result in the disruption of cholesterol biosynthesis. In this study, we aimed to investigate whether pulmonary ZnONPs exposure induces disturbance of cholesterol biosynthesis in mouse liver. Methods and results Our data demonstrated intratracheally instilled with a single dose of 3, 6, and 12 μg/animal ZnONPs could induce histopathological deterioration in mouse liver in a dose-related manner at 3 days, but remission was observed at 7 days after treatment. Moreover, ZnONPs caused the disturbance of cholesterol biosynthesis by increasing both 3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase and sterol regulatory element-binding protein 2 (SREBP2) protein expressions. To further reveal the underlying toxic mechanisms, we detected the biomarkers of autophagy and found that pulmonary ZnONPs exposure led to the elevation of LC3B-II and Beclin 1, suggesting ZnONPs might trigger autophagy in liver tissues. By using both beclin 1+/+ and beclin 1+/- mice, we demonstrated that inhibition of autophagy by heterozygous disruption of beclin 1 attenuated the disturbance of cholesterol biosynthesis induced by ZnONPs in liver. Conclusion Pulmonary exposure of ZnONPs would induce the cholesterol biosynthesis disturbance in mouse liver through Beclin-1-dependent autophagy activation, suggesting that inhibition of autophagy may contribute to preventing the cholesterol biosynthesis disturbance and its associated pathologies induced by ZnONPs in liver.
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Affiliation(s)
- Xuemei Liu
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Bin Wang
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Jun Zhang
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Qianghu Tang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Yujia Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, People's Republic of China.,Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing 400016, People's Republic of China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, People's Republic of China.,Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing 400016, People's Republic of China
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19
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Zhang S, Cheng S, Jiang X, Zhang J, Bai L, Qin X, Zou Z, Chen C. Gut-brain communication in hyperfunction of 5-hydroxytryptamine induced by oral zinc oxide nanoparticles exposure in young mice. Food Chem Toxicol 2019; 135:110906. [PMID: 31669603 DOI: 10.1016/j.fct.2019.110906] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 10/16/2019] [Accepted: 10/22/2019] [Indexed: 12/18/2022]
Abstract
Zinc oxide nanoparticles (ZnONPs) have been widely used in food storage containers and food additives in daily life. However, the impact of oral intake of ZnONPs on nervous system is extremely limited, especially on children and adolescents. In this study, four weeks old mice were treated with either vehicle or ZnONPs suspension solution at 26 mg/kg by intragastric administration for 30 days. Our results demonstrated that oral ZnONPs exposure could induce pathological changes in gut and abnormal excitement of enteric neurons. Interestingly, we found that ZnONPs caused enhancement of 5-hydroxytryptamine (5-HT) in gut by activation of its biosynthesis, transport and receptors, and subsequently resulting in increased level of 5-HT in brain via gut-brain communication by blood. Our data also showed that there were no apparent changes on the expressions of interleukin (Il)-6, Il-1β, C-C motif chemokine ligand 2 (Ccl2), tumor necrosis factor (Tnf) in gut and zinc chelator Mt2 in gut and cortex. Meanwhile, no significant changes were observed on the expressions of tryptophan hydroxylase type 1, 5-HT receptor 3A (Htr3a) and Htr4 in hippocampus and cortex. Our study indicate that oral ZnONPs exposure causes hyperfunction of 5-HT in gut in young mice which may further spread to brain via gut-brain communication.
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Affiliation(s)
- Shanshan Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Jun Zhang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Lulu Bai
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, People's Republic of China; Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing, 400016, People's Republic of China; Dongsheng Lung-Brain Diseases Joint Lab, Chongqing Medical University, Chongqing, 400016, People's Republic of China.
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20
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Liu X, Tu B, Jiang X, Xu G, Bai L, Zhang L, Meng P, Qin X, Chen C, Zou Z. Lysosomal dysfunction is associated with persistent lung injury in dams caused by pregnancy exposure to carbon black nanoparticles. Life Sci 2019; 233:116741. [PMID: 31398419 DOI: 10.1016/j.lfs.2019.116741] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Revised: 07/31/2019] [Accepted: 08/06/2019] [Indexed: 02/06/2023]
Abstract
AIMS Carbon black nanoparticles (CBNPs) are widely used in industrial field. Sensitive stages such as pregnancy are assumed to be more susceptible to stimulus, however whether pregnancy exposure to CBNPs (PrE-to-CBNPs) would cause long-term toxic effects in dams and the underlying mechanisms remain poorly addressed. The present study is aimed to determine the long-term toxic effects of PrE-to-CBNPs in dams. MATERIALS AND METHODS The pregnant mice were randomly divided into control group, low (21 μg/animal), medium (103 μg/animal) and high (515 μg/animal) CBNPs-treated groups. From gestational day (GD) 9 to GD18, the pregnant mice were intranasal exposed. At 49 days after parturition, lung tissues and bronchoalveolar lavage fluid (BALF) were obtained. Weight change, lung histopathology, lung ultrastructural pathology, cell count in BALF, oxidative stress/inflammatory maker and autophagy/lysosome-related protein expression were determined. KEY FINDINGS PrE-to-CBNPs caused a dose-dependent persistent lung injury in mice even 49 days after parturition, including the deteriorative lung histopathological changes, elevation of oxidative stress marker Nrf-2, HO-1 and CHOP, infiltration of macrophage and increased mRNA expression of inflammatory cytokines in the lung tissues and elevation of cells in BALF. However, PrE-to-CBNPs did not induce significant neutrophil infiltration and fibrosis. Moreover, we found that CBNPs could deposit in the lysosomes and decrease cathepsin D (an important hydrolase in lysosome), which might be associated with the dysfunction of lysosome and autophagy. SIGNIFICANCE Our study demonstrated that PrE-to-CBNPs could result in long-term lung injury in dams, and lysosomal dysfunction was probably linked to this process.
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Affiliation(s)
- Xuemei Liu
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Baijie Tu
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing 400016, PR China
| | - Ge Xu
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, PR China
| | - Lulu Bai
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Longbin Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Pan Meng
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, PR China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Chongqing Medical University, Chongqing 400016, PR China; Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing 400016, PR China.
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing 400016, PR China; Dongsheng Lung-Brain Disease Joint Lab, Chongqing Medical University, Chongqing 400016, PR China.
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Zhang L, Cheng S, Jiang X, Zhang J, Meng P, Tang Q, Qin X, Wang B, Chen C, Zou Z. Pregnancy exposure to carbon black nanoparticles exacerbates bleomycin-induced lung fibrosis in offspring via disrupting LKB1-AMPK-ULK1 axis-mediated autophagy. Toxicology 2019; 425:152244. [PMID: 31302203 DOI: 10.1016/j.tox.2019.152244] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Revised: 06/21/2019] [Accepted: 07/10/2019] [Indexed: 12/13/2022]
Abstract
Accumulating evidence shows that carbon black nanoparticles (CBNPs) (one of the most used nanoparticles) can induce toxicity via induction of inflammation, oxidative stress and genotoxicity in vitro and in vivo, and epidemiological studies have indicated that the possible correlation between maternal immune activation and risk of developing neuropsychiatric disorder in the offspring. However, whether pregnancy exposure of CBNPs (Pr-CBNPs) enhances the susceptibility to bleomycin (BLM)-induced lung fibrosis in offspring is unknown. Herein, we demonstrated that Pr-CBNPs during gestational day 9-18 via intranasal administration could confer enhanced susceptibility to BLM-induced fibrotic response in offspring, including deteriorative lung pathologic changes and more collagen deposition. Intriguingly, we found that Pr-CBNPs repressed the activation of autophagy (an anti-fibrotic mechanism), which was moderately activated in offspring from mock group. Moreover, Pr-CBNPs was likely to disrupt the LKB1-AMPK-ULK1 axis (a key regulatory pathway for autophagy induction). In summary, this study provides the first evidence that pregnancy exposure to CBNPs can exacerbate BLM-induced lung fibrotic response in offspring probably through disruption of LKB1-AMPK-ULK1 axis-mediated autophagy.
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Affiliation(s)
- Longbin Zhang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, 400016, PR China
| | - Shuqun Cheng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, 400016, PR China
| | - Xuejun Jiang
- Center of Experimental Teaching for Public Health, Experimental Teaching and Management Center, Chongqing Medical University, Chongqing, 400016, PR China
| | - Jun Zhang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, PR China
| | - Pan Meng
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, 400016, PR China
| | - Qianghu Tang
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, 400016, PR China
| | - Xia Qin
- Department of Pharmacy, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, PR China
| | - Bin Wang
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, PR China
| | - Chengzhi Chen
- Department of Occupational and Environmental Health, School of Public Health and Management, Research Center for Medicine and Social Development, Innovation Center for Social Risk Governance in Health, Chongqing Medical University, Chongqing, 400016, PR China.
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, Chongqing, 400016, PR China.
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