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Liu X, Ai Y, Xiao M, Wang C, Shu Z, Yin J, Chu Y, Xiao Q, Liu B. PM 2.5 juvenile exposure-induced spermatogenesis dysfunction by triggering testes ferroptosis and antioxidative vitamins intervention in adult male rats. Environ Sci Pollut Res Int 2023; 30:111051-111061. [PMID: 37801247 PMCID: PMC10625507 DOI: 10.1007/s11356-023-30150-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 09/25/2023] [Indexed: 10/07/2023]
Abstract
PM2.5 derived from automobile exhaust can cause reproductive impairment in adult males, but the toxic effects of PM2.5 exposure on reproductive function in juvenile male rats and its relationship with ferroptosis have not been reported. In this paper, 30-day-old juvenile male Sprague-Dawley (SD) rats were divided into four groups (blank control, vitamin control, PM2.5, and PM2.5+Vitamin). The blank control group was fed normally, and the vitamin control group was given intragastric administration of vitamins in addition to normal feeding. PM2.5 was administered via tracheal intubation. When the rats were treated for 4 weeks until reaching the period of sexual maturity. A mating test was performed first, and then their testicular and epididymal tissues were studied. Compared with control rats, juvenile male rats exposed to PM2.5 showed a decreased sperm count and fertility rate, redox imbalance, damaged mitochondria, a metabolic disorder of intracellular iron ions, and a significant rise in ferroptosis during the period of sexual maturity. After antioxidative vitamins intervention, the redox imbalance, metabolic disorder of intracellular iron ions, and ferroptosis were all alleviated, leading to the following conclusions: after being exposed to PM2.5 from automobile exhaust, male juvenile rats during the period of sexual maturity have significantly decreased reproductive function. The reproductive toxicity of PM2.5 is closely related to oxidative stress and ferroptosis. In addition, ferroptosis decreases and reproductive function is recovered to some degree after antioxidative vitamins intervention.
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Affiliation(s)
- Xiang Liu
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Yaya Ai
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Mingchen Xiao
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Cao Wang
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Zhen Shu
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Jia Yin
- Suining Central Hospital, Suining, Sichuan Province, China
| | - Yu Chu
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Qing Xiao
- Department of Pediatric Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou Province, China
- Guizhou Children's Hospital, Zunyi, Guizhou Province, China
| | - Bin Liu
- Department of Pediatric Surgery, Longgang District Maternity & Child Healthcare Hospital of Shenzhen City, Shenzhen, Guangdong Province, 518100, China.
- Department of Pediatric Surgery, Longgang Maternity and Child Institute of Shantou University Medical College, Shenzhen, Guangdong Province, 518100, China.
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Liu X, Liang Y, Guo J. Heavy metal pollution in Nanchang City and its health implication on traffic policemen. Environ Sci Pollut Res Int 2019; 26:17885-17890. [PMID: 28956264 DOI: 10.1007/s11356-017-0289-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Accepted: 09/20/2017] [Indexed: 06/07/2023]
Abstract
The purpose of this study is to evaluate the health effect of heavy metal pollution in air pollutants on traffic policemen. This study will facilitate the scientific evaluation of health status of traffic policemen. PM10 samples were collected from industrial area, congested traffic area and residential area respectively in Nanchang City, and the concentrations of heavy metals were analyzed. The traffic policemen were examined through chest X-rays. The total of 637 urine samples and 142 blood samples have been collected, and the concentrations of Pb in samples were detected. Vehicle flux data of Nanchang City were collected from the Department of Transport's Traffic Management. Statistic analyses were carried out by statistics software of Excel 2003 and SPSS20.0, and the health effect of heavy metal pollution of PM10 on the traffic policemen was evaluated. The discharge of pollutants from enterprises is an important reason for the high content of heavy metals in urban air pollution. With the rapid growth of urban traffic flow, Bayi Bridge becomes an important transportation hinge in Nanchang City, and the bidirectional traffic flow rate through the bridge at peak hours reached 99 vehicles per minute. The latent hazard of occupational harm on the traffic policemen caused by automobile exhaust is increasing. The concentration of Pb in the urine and blood samples from traffic policemen working in Nanchang City was 268.310 ± 177.031 and 22.873 ± 21.137 μg/L, respectively. Both results (2.04% of Pb in urine and 18.31% of Pb in blood) exceeded the highest limit of observed occupationally outdoor workers. This study provides an initial contribution for the assessment of city air pollution, esp. the health effect of heavy metal (Pb) pollution on traffic policemen.
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Affiliation(s)
- Xiaozhen Liu
- Key Laboratory of Poyang Lake Environmental and Resource Utilization, Ministry of Education, School of Resources Environmental and Chemical Engineering, Nanchang University, 330047, Nanchang, People's Republic of China
| | - Yue Liang
- Jiangxi Province Key Laboratory of the Causes and Control of Atmospheric Pollution, State Key Laboratory for Nuclear Resources and Environment, School of Water Resources and Environmental Engineering, East China University of Technology, 330013, Nanchang, People's Republic of China.
| | - Jiangmei Guo
- Department of Clinical Laboratory, Jiangxi Province People's Hospital, Nanchang, 330006, China
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Wang T, Shen D, Xu T, Jiang R. Photocatalytic degradation properties of V-doped TiO 2 to automobile exhaust. Sci Total Environ 2017; 586:347-354. [PMID: 28187941 DOI: 10.1016/j.scitotenv.2017.02.021] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Revised: 01/22/2017] [Accepted: 02/03/2017] [Indexed: 06/06/2023]
Abstract
To improve the photocatalytic degradation properties of titanium dioxide (TiO2) used as raw materials for purifying automobile exhaust (AE), the vanadium (V)-doped TiO2 samples were prepared. The photocatalytic degradation efficiencies of V-doped TiO2 to each component in AE were evaluated under ultraviolet (UV) and visible light irradiation, respectively. Results indicated that the photocatalytic activity of V-doped TiO2 to AE was higher than that of pure TiO2, and the optimal V dopant content of TiO2 was 1.0% under UV light irradiation. The degradation efficiencies of V-doped TiO2 to NOx and HC were higher than those to CO2 and CO in AE because of the reversible reaction between CO2 and CO. In addition, it was found that the photocatalytic degradation efficiencies of V-doped TiO2 to each component in AE were also increased under visible light irradiation. The V-doped TiO2 also showed higher degradation efficiencies to NOx and HC than those to CO2 and CO under visible light irradiation. The V doped TiO2 presented higher photocatalytic activity to CO2 than that to CO, but the reversible reaction between CO and CO2 was not found under visible light irradiation. The photocatalytic reactions of pure and V-doped TiO2 samples to each component in AE followed the first order kinetic pathway under the two light irradiations. It is concluded that the V doping is a feasible method to improve the photocatalytic degradation properties of TiO2 to AE for air purification, developing a sustainable environmental purification technology based on TiO2 materials.
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Affiliation(s)
- Tong Wang
- School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China
| | - Dongya Shen
- School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China
| | - Tao Xu
- School of Civil Engineering, Nanjing Forestry University, 159, Longpan Road, Nanjing 210037, Jiangsu, China.
| | - Ruiling Jiang
- Jiangsu Modern Highway & Bridge Co. Ltd., 2, Xianlin Avenue, Nanjing 210046, Jiangsu, China
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Hasunuma H, Sato T, Iwata T, Kohno Y, Nitta H, Odajima H, Ohara T, Omori T, Ono M, Yamazaki S, Shima M. Association between traffic-related air pollution and asthma in preschool children in a national Japanese nested case-control study. BMJ Open 2016; 6:e010410. [PMID: 26916696 PMCID: PMC4769392 DOI: 10.1136/bmjopen-2015-010410] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES There has been little study on the effect of traffic-related air pollution on the incidence and persistence of asthma in preschool children. We evaluated the association of exposure to traffic-related air pollution with the incidence/persistence of asthma during the first 3 years of life using a population-based study. METHODS A baseline survey was conducted in 1½-year-old children (n=63,266). A follow-up survey at 3 years of age (n=43,343) identified new-onset asthma cases (n=853) and persistence of asthma (n=214). In the prevalence/persistence study, the outdoor concentrations of nitrogen oxides (NOx) and elemental carbon (EC) at home during the first 1½ years of life were estimated by a dispersion model. In the nested case-control study, which regarded incidence of asthma as cases, the personal exposure levels were estimated by dispersion model including time-activity pattern. RESULTS There was no statistically significant association between the incidence of asthma between age 1½ and 3 years and personal exposure levels to NOx nor EC. However, the persistence of asthmatic symptoms (between 1½ and 3 ears) was significantly associated with outdoor concentrations of NOx. ORs for the persistence of asthmatic symptoms were 6.02 (95% CI 1.51 to 23.92) for the comparison between the upper 5th and lower 25th centiles of NOx. CONCLUSIONS While no statistically significant association was observed for the incidence of asthma, the persistence of asthmatic symptoms in preschool children was significantly associated with traffic-related air pollution. This supports its importance as a risk factor in childhood airway disease.
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Affiliation(s)
- Hideki Hasunuma
- Department of Public Health, Hyogo College of Medicine, Nishinomiya, Japan
- Center for Environmental Information Science, Tokyo, Japan
| | - Tosiya Sato
- Department of Biostatistics, Kyoto University School of Public Health, Kyoto, Japan
| | - Tsutomu Iwata
- Department of Education for Childcare, Tokyo Kasei University, Tokyo, Japan
| | - Yoichi Kohno
- Department of Pediatrics, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Hiroshi Nitta
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Hiroshi Odajima
- National Hospital Organization Fukuoka Hospital, Fukuoka, Japan
| | - Toshimasa Ohara
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Takashi Omori
- Center Administration Division, Center for Clinical Research, Kobe University Hospital, Kobe, Japan
| | - Masaji Ono
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Shin Yamazaki
- National Institute for Environmental Studies, Tsukuba, Japan
| | - Masayuki Shima
- Department of Public Health, Hyogo College of Medicine, Nishinomiya, Japan
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Kumar P, Gupta NC. Commuter exposure to inhalable, thoracic and alveolic particles in various transportation modes in Delhi. Sci Total Environ 2016; 541:535-541. [PMID: 26439646 DOI: 10.1016/j.scitotenv.2015.09.076] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 07/30/2015] [Accepted: 09/15/2015] [Indexed: 06/05/2023]
Abstract
A public health concern is to understand the linkages between specific pollution sources and adverse health impacts. Commuting can be viewed as one of the significant-exposure activity in high-vehicle density areas. This paper investigates the commuter exposure to inhalable, thoracic and alveolic particles in various transportation modes in Delhi, India. Air pollution levels are significantly contributed by automobile exhaust and also in-vehicle exposure can be higher sometime than ambient levels. Motorcycle, auto rickshaw, car and bus were selected to study particles concentration along two routes in Delhi between Kashmere Gate and Dwarka. The bus and auto rickshaw were running on compressed natural gas (CNG) while the car and motorcycle were operated on gasoline fuel. Aerosol spectrometer was employed to measure inhalable, thoracic and alveolic particles during morning and evening rush hours for five weekdays. From the study, we observed that the concentration levels of these particles were greatly influenced by transportation modes. Concentrations of inhalable particles were found higher during morning in auto rickshaw (332.81 ± 90.97 μg/m(3)) while the commuter of bus exhibited higher exposure of thoracic particles (292.23 ± 110.45 μg/m(3)) and car commuters were exposed to maximum concentrations of alveolic particles (222.37 ± 26.56 μg/m(3)). We observed that in evening car commuters experienced maximum concentrations of all sizes of particles among the four commuting modes. Interestingly, motorcycle commuters were exposed to lower levels of inhalable and thoracic particles during morning and evening hours as compared to other modes of transport. The mean values were found greater than the median values for all the modes of transport suggesting that positive skewed distributions are characteristics of naturally occurring phenomenon.
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Affiliation(s)
- Pramod Kumar
- University School of Environment Management, Guru Gobind Singh Indraprastha University, Sector -16C, Dwarka, New Delhi 110078, India
| | - N C Gupta
- University School of Environment Management, Guru Gobind Singh Indraprastha University, Sector -16C, Dwarka, New Delhi 110078, India.
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