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Hong SN, Yang SK, Kim SG, Han SA, Park JA, Cha H, Kim JK, Yoon SY, Eun KM, Kim DW. Endotype and Phenotype Related Postoperative Effects of Bacterial Lysate in Chronic Rhinosinusitis. Ann Otol Rhinol Laryngol 2024; 133:805-813. [PMID: 39044388 DOI: 10.1177/00034894241264459] [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] [Indexed: 07/25/2024]
Abstract
OBJECTIVES Chronic rhinosinusitis (CRS) endotypes have demonstrated clinical value in guiding treatment decisions. Bacterial lysates are immunomodulators that have shown beneficial effects in various respiratory inflammatory diseases. This study aimed to evaluate the effect of postoperative bacterial lysate therapy on different CRS endotypes. METHODS Patients diagnosed with CRS who underwent endoscopic sinus surgery were recruited. Bacterial lysates were administered postoperatively for 10 days per month for 3 months to the experimental group comprising patients with a history of frequent upper respiratory infections without adverse reactions. The remaining participants were allocated to the control group. The results of the postoperative 3-, 6-, and 12-month assessments, including the modified Lund-Kennedy (mLK) endoscopic and Sinonasal Outcome Test (SNOT) 22 scores, for the groups were compared. The tissue samples obtained from the participants were evaluated to detect the presence of relevant inflammatory mediators. RESULTS Among the 92 participants, 47 started bacterial lysate therapy 2 weeks after the surgery. The tissue cytokine profiles and clinical parameters, such as the disease severity and blood eosinophil percentage, of the bacterial lysate and control groups were comparable before treatment. The mLK endoscopic and SNOT-22 scores did not differ after 3, 6, and 12 months of follow-up. The subgroup analysis revealed that the bacterial lysate group had significantly lower mLK endoscopic scores than the control group for CRS without nasal polyps, while there was a tendency toward significance for the interleukin (IL)-5 negative group after 6 months. CONCLUSION Postoperative bacterial lysate therapy has some beneficial effects on the endoscopic findings of patients with CRS without nasal polyps or those who are negative for IL-5.
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Affiliation(s)
- Seung-No Hong
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Seung Koo Yang
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Su Geun Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Sun A Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Hallym University College of Medicine, Dongtan Sacred Heart Hospital, Hwaseong, Gyeonggi, Republic of Korea
| | - Jin-A Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Hyunkyung Cha
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Soonchunhyang University Cheonan Hospital, Soonchunhyang University College of Medicine, Cheonan, Chungcheongnam-do, Republic of Korea
| | - Joon Kon Kim
- Department of Otolaryngology-Head and Neck Surgery, Daejeon Eulji Medical Center, Eulji University, Daejeon, Republic of Korea
| | - So Yeon Yoon
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
- Department of Otorhinolaryngology-Head and Neck Surgery, Catholic Kwandong University College of Medicine, Gangneung, Gangwon-do, Republic of Korea
| | - Kyoung Mi Eun
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
| | - Dae Woo Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University College of Medicine, Seoul National University Boramae Medical Center, Seoul, Republic of Korea
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Wang Y, Zhu H, Zhang S, Yang K, Liu Y, Lai B, Yu F. Disruption and recovery of outdoor bioaerosols before, during, and after the COVID-19 outbreak at a campus in Central China: pathogen composition, particle size distribution, influencing factors, and exposure risk. ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2024; 26:421-435. [PMID: 38258910 DOI: 10.1039/d3em00496a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
Before (2019), during (2020), and after (2021) the COVID-19 outbreak, different response methods and measures were taken on campuses to control the spread of COVID-19 within schools. These response methods may have changed the outdoor bioaerosol characteristics, which may affect staff and student health. Therefore, we analyzed the bacterial concentrations, particle size distribution, microbial populations, exposure risks, and environmental influences of bioaerosols at a campus before, during, and after the COVID-19 outbreak. This study used eight-stage Andersen samplers to collect and analyze culturable bacteria in bioaerosols from various locations, high-throughput sequencing to analyze microbial species, principal component analysis to compare differences in samples, RDA to investigate the effects of environmental factors on bioaerosols, and hazard quotient (HQ) and BugBase to evaluate human health risks. The study findings revealed that average bacterial concentrations before, during, and after COVID-19 were 75 CFU m-3, 136 CFU m-3, and 78 CFU m-3, respectively. Moreover, the average percentage of bacteria attached to PM2.5 was 49.2%, 42.7%, and 29.9%, respectively. High-throughput sequencing revealed that species composition changed significantly during the three years of COVID-19. The proportion of Pantoea and Bacillus increased with the development of COVID-19 and these became the dominant strains after COVID-19, whereas Pseudomonas had the maximum proportion during COVID-19. Both risk assessment and BugBase phenotype prediction results indicated that the potential pathogenic risk was the highest in the outdoor environment of the campus during COVID-19 and that bioaerosol contamination was the most severe compared to the outdoor bioaerosol characteristics of the campus recovered after COVID-19.
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Affiliation(s)
- Yanjie Wang
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Haoran Zhu
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Song Zhang
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Kai Yang
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Yang Liu
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Bisheng Lai
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
| | - Fangfang Yu
- School of Public Health, Zhengzhou University, Zhengzhou 450001, P. R. China.
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Zaręba Ł, Piszczatowska K, Dżaman K, Soroczynska K, Motamedi P, Szczepański MJ, Ludwig N. The Relationship between Fine Particle Matter (PM2.5) Exposure and Upper Respiratory Tract Diseases. J Pers Med 2024; 14:98. [PMID: 38248800 PMCID: PMC10817350 DOI: 10.3390/jpm14010098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2023] [Revised: 01/13/2024] [Accepted: 01/13/2024] [Indexed: 01/23/2024] Open
Abstract
PM2.5 is one of the most harmful components of airborne pollution and includes particles with diameters of less than 2.5 μm. Almost 90% of the world's population lives in areas with poor air quality exceeding the norms established by the WHO. PM2.5 exposure affects various organs and systems of the human body including the upper respiratory tract which is one of the most prone to its adverse effects. PM2.5 can disrupt nasal epithelial cell metabolism, decrease the integrity of the epithelial barrier, affect mucociliary clearance, and alter the inflammatory process in the nasal mucosa. Those effects may increase the chance of developing upper respiratory tract diseases in areas with high PM2.5 pollution. PM2.5's contribution to allergic rhinitis (AR) and rhinosinusitis was recently thoroughly investigated. Numerous studies demonstrated various mechanisms that occur when subjects with AR or rhinosinusitis are exposed to PM2.5. Various immunological changes and alterations in the nasal and sinonasal epithelia were reported. These changes may contribute to the observations that exposure to higher PM2.5 concentrations may increase AR and rhinosinusitis symptoms in patients and the number of clinical visits. Thus, studying novel strategies against PM2.5 has recently become the focus of researchers' attention. In this review, we summarize the current knowledge on the effects of PM2.5 on healthy upper respiratory tract mucosa and PM2.5's contribution to AR and rhinosinusitis. Finally, we summarize the current advances in developing strategies against PM2.5 particles' effects on the upper respiratory tract.
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Affiliation(s)
- Łukasz Zaręba
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (Ł.Z.); (K.P.); (K.S.); (P.M.)
| | - Katarzyna Piszczatowska
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (Ł.Z.); (K.P.); (K.S.); (P.M.)
| | - Karolina Dżaman
- Department of Otolaryngology, The Medical Centre of Postgraduate Education, 03-242 Warsaw, Poland;
| | - Karolina Soroczynska
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (Ł.Z.); (K.P.); (K.S.); (P.M.)
| | - Parham Motamedi
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (Ł.Z.); (K.P.); (K.S.); (P.M.)
| | - Mirosław J. Szczepański
- Department of Biochemistry, Medical University of Warsaw, 02-097 Warsaw, Poland; (Ł.Z.); (K.P.); (K.S.); (P.M.)
| | - Nils Ludwig
- Department of Oral and Maxillofacial Surgery, University Hospital Regensburg, 93053 Regensburg, Germany
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Liu Y, Lin X, Hao Z, Yu M, Tang Y, Teng X, Sun W, Kang L. Cadmium exposure caused cardiotoxicity in common carps (Cyprinus carpio L.): miR-9-5p, oxidative stress, energetic impairment, mitochondrial division/fusion imbalance, inflammation, and autophagy. FISH & SHELLFISH IMMUNOLOGY 2023; 138:108853. [PMID: 37245677 DOI: 10.1016/j.fsi.2023.108853] [Citation(s) in RCA: 28] [Impact Index Per Article: 28.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 05/30/2023]
Abstract
Cadmium (Cd), a toxic heavy metal pollutant, is a threat to human and eatable fish health. Common carps are widely cultivated and eaten by humans. However, there are no reports about Cd-damaged common carp hearts. Our experiment attempted to investigate the cardiotoxicity of Cd to common carps by establishing a common carp Cd exposure model. Our results showed that Cd injured hearts. Moreover, Cd treatment induced autophagy via miR-9-5p/Sirt1/mTOR/ULK1 pathway. Cd exposure caused oxidant/antioxidant imbalance and oxidative stress; and led to energetic impairment. Energetic impairment partook in oxidative stress-mediated autophagy through AMPK/mTOR/ULK1 pathway. Furthermore, Cd caused mitochondrial division/fusion imbalance and resulted in inflammatory injury via NF-κB-COX-2-PTGEs and NF-κB-COX-2-TNF-α pathways. Oxidative stress mediated mitochondrial division/fusion imbalance, further induced inflammation and autophagy via OPA1/NF-κB-COX-2-TNF-α-Beclin1 and OPA1/NF-κB-COX-2-TNF-α/P62 pathways under Cd treatment. Taken together, miR-9-5p, oxidative stress, energetic impairment, mitochondrial division/fusion imbalance, inflammation, and autophagy participated in the mechanism of Cd-cardiotoxicity to common carps. Our study revealed harmful effect of Cd on hearts, and provided new information for researches of environmental pollutant toxicity.
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Affiliation(s)
- Yuhao Liu
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China
| | - Xu Lin
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China
| | - Zhiyu Hao
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China
| | - Meijing Yu
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China
| | - You Tang
- Electrical and Information Engineering College, JiLin Agricultural Science and Technology University, Jilin, 132101, PR China
| | - Xiaohua Teng
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China.
| | - Wei Sun
- College of Animal Science and Technology, Northeast Agricultural University, NO. 600 Chang Jiang Road, Xiang Fang District, Harbin, 150030, PR China.
| | - Lu Kang
- Institute of Agricultural Quality Standards and Testing Technology, Xinjiang Academy of Agricultural Sciences, Urumqi, 830091, PR China.
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5
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Meng X, Wang Y, Wang T, Jiao B, Shao H, Jia Q, Duan H. Particulate Matter and Its Components Induce Alteration on the T-Cell Response: A Population Biomarker Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:375-384. [PMID: 36537917 DOI: 10.1021/acs.est.2c04347] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Compared with the T-cell potential of particulate matter (PM) in animal studies, comprehensive evaluation on the impairments of T-cell response and exposure-response from PM and its components in human population is limited. There were 768 participants in this study. We measured environmental PM and its polycyclic aromatic hydrocarbons (PAHs) and metals and urinary metabolite levels of PAHs and metals among population. T lymphocyte and its subpopulation (CD4+ T cells and CD8+ T cells) and the expressions of T-bet, GATA3, RORγt, and FoxP3 were measured. We explored the exposure-response of PM compositions by principal component analysis and mode of action by mediation analysis. There was a significant decreasing trend for T lymphocytes and the levels of T-bet and GATA3 with increased PM levels. Generally, there was a negative correlation between PM, urinary 1-hydroxypyrene, urinary metals, and the levels of T-bet and GATA3 expression. Additionally, CD4+ T lymphocytes were found to mediate the associations of PM2.5 with T-bet expression. PM and its bound PAHs and metals could induce immune impairments by altering the T lymphocytes and genes of T-bet and GATA3.
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Affiliation(s)
- Xiangjing Meng
- Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine, Jinan, Shandong 250062, China
| | - Yanhua Wang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Ting Wang
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Bo Jiao
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
| | - Hua Shao
- Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine, Jinan, Shandong 250062, China
| | - Qiang Jia
- Shandong First Medical University & Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine, Jinan, Shandong 250062, China
| | - Huawei Duan
- National Institute for Occupational Health and Poison Control, Chinese Center for Disease Control and Prevention, Beijing 100050, China
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6
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Liu H, Nie H, Lai W, Shi Y, Liu X, Li K, Tian L, Xi Z, Lin B. Different exposure modes of PM 2.5 induces bronchial asthma and fibrosis in male rats through macrophage activation and immune imbalance induced by TIPE2 methylation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 247:114200. [PMID: 36274320 DOI: 10.1016/j.ecoenv.2022.114200] [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] [Received: 05/18/2022] [Revised: 10/02/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
Exposure to PM2.5 can aggravate the occurrence and development of bronchial asthma and fibrosis. Here, we investigated the differences in bronchial injury caused by different exposure modes of PM2.5 (high concentration intermittent exposure and low concentration continuous exposure), and the mechanism of macrophage activation and respiratory immune imbalance induced by PM2.5, leading to bronchial asthma and airway fibrosis using animal and cell models. A "PM2.5 real-time online concentrated animal whole-body exposure system" was used to conduct PM2.5 respiratory exposure of Wistar rats for 12 weeks, which can enhance oxidative stress in rat bronchus, activate epithelial cells and macrophages, release chemokines, recruit inflammatory cells, release inflammatory factors and extracellular matrix, promote bronchial mucus hypersecretion, inhibit the expression of epithelial cytoskeletal proteins, destroy airway barrier, and induce asthma. Furthermore, PM2.5 induced M2 polarization in lung bronchial macrophages through JAK/STAT and PI3K/Akt signaling pathways, and compared with low concentration continuous exposure, high concentration intermittent exposure of PM2.5 could regulate significantly higher expression of TIPE2 protein through promoter methylation of TIPE2 DNA, thereby activating PI3K/Akt signaling pathway and more effectively inducing M2 polarization of macrophages. Additionally, activated macrophages release IL-23, and activated epithelial cells and macrophages released TGF-β1, which promoted the differentiation of Th17 cells, triggered the Th17 dominant immune response, and activated the TGF-β1/Smad2 signaling pathway, finally causing bronchial fibrosis. Moreover, when the total amount of PM2.5 exposure was equal, high concentration-intermittent exposure was more serious than low concentration-continuous exposure. In vitro experiments, the co-culture models of PM2.5 with BEAS-2B, WL-38 and rat primary alveolar macrophages further confirmed that PM2.5 could induce the macrophage activation through oxidative stress and TIPE2 DNA methylation, and activate the TGF-β1/Smad2 signaling pathway, leading to the occurrence of bronchial fibrosis.
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Affiliation(s)
- Huanliang Liu
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Huipeng Nie
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Wenqing Lai
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Yue Shi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Xuan Liu
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Kang Li
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Lei Tian
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China
| | - Zhuge Xi
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China.
| | - Bencheng Lin
- Tianjin Institute of Environmental and Operational Medicine, Tianjin 300050, China; Tianjin Key Laboratory of Risk Assessment and Control Technology for Environment & Food Safety, Tianjin 300050, China.
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Han B, Liu Q, Su X, Zhou L, Zhang B, Kang H, Ning J, Li C, Zhao B, Niu Y, Chen W, Chen L, Zhang R. The role of PP2A /NLRP3 signaling pathway in ambient particulate matter 2.5 induced lung injury. CHEMOSPHERE 2022; 307:135794. [PMID: 35926746 DOI: 10.1016/j.chemosphere.2022.135794] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 07/09/2022] [Accepted: 07/19/2022] [Indexed: 06/15/2023]
Abstract
Ambient particulate matter 2.5 (PM2.5) exposure has been linked to pulmonary fibrosis. However, the key signaling pathways remained unclear. In the present study, we applied a mouse model with myeloid-specific deletion of Ppp2r1a gene (encoding protein phosphatase 2 A (PP2A) A subunit) to identify the key signaling pathways involved in PM2.5-induced pulmonary fibrosis. PP2A Aα-/- homozygote mice and matched wild-type (WT) littermates were exposed to filtered air (FA), unfiltered air (UA), and concentrated PM2.5 (CA) in a real-ambient PM exposure system for 8 weeks and 16 weeks, respectively. The mice exposed to PM2.5 displayed a progressive inflammation and pulmonary fibrosis. Moreover, the expressions of NLRP3, pro-caspase-1, caspase-1, ASC and IL-1β were increased in mice lung following PM2.5 exposure, indicating PM2.5 exposure caused pulmonary inflammation by the NLRP3 pathways activation. Furthermore, the effects of PM exposure on pulmonary inflammation, pulmonary fibrosis, oxidative stress, and pulmonary function damage were significantly enhanced in PP2A-/- mice compared to WT mice, indicating the role of PP2A in the regulation of pulmonary injury induced by PM exposure. In vitro study confirmed that PP2A was involved in the PM2.5-induced inflammation response and NLRP3 inflammasome activation. Importantly, we identified PP2A regulated the activation of NLRP3 pathways by direct dephosphorylating IRE1α in response to PM2.5 exposure. Taken together, our results demonstrated that PP2A-IRE1α-NLRP3 signaling pathway played a crucial role in regulating the inflammation response, triggering the lung fibrogenesis upon PM2.5 exposure. Our findings provide new insights into regulatory role of PP2A in human diseases upon the PM exposure.
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Affiliation(s)
- Bin Han
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Qingping Liu
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Xuan Su
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Lixiao Zhou
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Boyuan Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Hui Kang
- Occupational Health and Environmental Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Jie Ning
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Chen Li
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Bo Zhao
- Department of Laboratory Diagnosis, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Yujie Niu
- Occupational Health and Environmental Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
| | - Wen Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Liping Chen
- Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
| | - Rong Zhang
- Department of Toxicology, Hebei Medical University, Shijiazhuang, 050017, Hebei, China; Hebei Key Laboratory of Environment and Human Health, Hebei Medical University, Shijiazhuang, 050017, Hebei, China.
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8
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Nauwelaerts SJD, Van Goethem N, Ureña BT, De Cremer K, Bernard A, Saenen ND, Nawrot TS, Roosens NHC, De Keersmaecker SCJ. Urinary CC16, a potential indicator of lung integrity and inflammation, increases in children after short-term exposure to PM 2.5/PM 10 and is driven by the CC16 38GG genotype. ENVIRONMENTAL RESEARCH 2022; 212:113272. [PMID: 35439460 DOI: 10.1016/j.envres.2022.113272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 04/04/2022] [Accepted: 04/06/2022] [Indexed: 06/14/2023]
Abstract
Particular matter (PM) exposure is a big hazard for public health, especially for children. Serum CC16 is a well-known biomarker of respiratory health. Urinary CC16 (U-CC16) can be a noninvasive alternative, albeit requiring adequate adjustment for renal handling. Moreover, the SNP CC16 G38A influences CC16 levels. This study aimed to monitor the effect of short-term PM exposure on CC16 levels, measured noninvasively in schoolchildren, using an integrative approach. We used a selection of urine and buccal DNA samples from 86 children stored in an existing biobank. Using a multiple reaction monitoring method, we measured U-CC16, as well as RBP4 (retinol binding protein 4) and β2M (beta-2-microglobulin), required for adjustment. Buccal DNA samples were used for CC16 G38A genotyping. Linear mixed-effects models were used to find relevant associations between U-CC16 and previously obtained data from recent daily PM ≤ 2.5 or 10 μm exposure (PM2.5, PM10) modeled at the child's residence. Our study showed that exposure to low PM at the child's residence (median levels 18.9 μg/m³ (PM2.5) and 23.6 μg/m³ (PM10)) one day before sampling had an effect on the covariates-adjusted U-CC16 levels. This effect was dependent on the CC16 G38A genotype, due to its strong interaction with the association between PM levels and covariates-adjusted U-CC16 (P = 0.024 (PM2.5); P = 0.061 (PM10)). Only children carrying the 38GG genotype showed an increase of covariates-adjusted U-CC16, measured 24h after exposure, with increasing PM2.5 and PM10 (β = 0.332; 95% CI: 0.110 to 0.554 and β = 0.372; 95% CI: 0.101 to 0.643, respectively). To the best of our knowledge, this is the first study using an integrative approach to investigate short-term PM exposure of children, using urine to detect early signs of pulmonary damage, and taking into account important determinants such as the genetic background and adequate adjustment of the measured biomarker in urine.
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Affiliation(s)
- Sarah J D Nauwelaerts
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium; Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nina Van Goethem
- Department of Epidemiology and Public Health, Sciensano, Brussels, Belgium; Department of Epidemiology and Biostatistics, Institut de Recherche Expérimentale et Clinique, Faculty of Public Health, Université catholique de Louvain, Belgium
| | - Berta Tenas Ureña
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
| | - Koen De Cremer
- Platform Chromatography and Mass Spectrometry, Sciensano, Brussels, Belgium
| | - Alfred Bernard
- Centre for Toxicology and Applied Pharmacology, University Catholique de Louvain, Woluwe, Brussels, Belgium
| | - Nelly D Saenen
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium
| | - Tim S Nawrot
- Centre for Environmental Sciences, Hasselt University, Diepenbeek, Belgium; Department of Public Health and Primary Care, KU Leuven, Leuven, Belgium
| | - Nancy H C Roosens
- Transversal Activities in Applied Genomics, Sciensano, Brussels, Belgium
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Jung SH, Bae CH, Kim JH, Park SD, Shim JJ, Lee JL. Lactobacillus casei HY2782 and Pueraria lobata Root Extract Complex Ameliorates Particulate Matter-Induced Airway Inflammation in Mice by Inhibiting Th2 and Th17 Immune Responses. Prev Nutr Food Sci 2022; 27:188-197. [PMID: 35919572 PMCID: PMC9309071 DOI: 10.3746/pnf.2022.27.2.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 04/11/2022] [Accepted: 04/20/2022] [Indexed: 12/03/2022] Open
Abstract
This study aimed to investigate the effects of Lactobacillus casei HY2782 and Pueraria lobata root extract complex (HY2782 complex) in mitigating airway inflammation resulting from exposure to particulate matter ≤2.5 μm in diameter (PM2.5) in an animal model. Chronic inflammatory airway disease is associated with Th2-related cytokines interleukin (IL)-4, IL-5, and IL-13 and Th17-related cytokine IL-17A, which are the major contributors to allergy and asthma. Results indicated that PM2.5 elevates allergen-related airway inflammation and respiratory hyperresponsiveness in C57BL/6 mice. The HY2782 complex significantly reduced Th2/Th17-derived cytokines IL-4, IL5, IL-13, and IL-17A; immunoglobulin E; and leukotriene C4 in bronchoalveolar lavage fluid (BALF) and serum. Furthermore, the HY2782 complex was associated with the modulation of oxidative stress-related genes. Administration of the HY2782 complex resulted in a markedly reduced number of neutrophils and eosinophil infiltration in BALF. Histopathological observation of lung tissue also showed reduced inflammatory cell infiltration into airways and surrounding tissue. The HY2782 complex may be a promising candidate for the preventive therapy of allergic diseases and airway inflammation caused by PM2.5 inhalation.
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Affiliation(s)
| | - Chu Hyun Bae
- R&BD Center, hy Co., Ltd., Gyeonggi 17086, Korea
| | - Ji Hyun Kim
- R&BD Center, hy Co., Ltd., Gyeonggi 17086, Korea
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10
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Cheliotis KS, Jewell CP, Solórzano C, Urban B, Collins AM, Mitsi E, Pojar S, Nikolaou E, German EL, Reiné J, Gordon SB, Jochems SP, Rylance J, Ferreira DM. Influence of sex, season and environmental air quality on experimental human pneumococcal carriage acquisition: a retrospective cohort analysis. ERJ Open Res 2022; 8:00586-2021. [PMID: 35415189 PMCID: PMC8995542 DOI: 10.1183/23120541.00586-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 03/04/2022] [Indexed: 11/17/2022] Open
Abstract
Streptococcus pneumoniae (pneumococcus) is the most commonly identified bacterial cause of pneumonia and the leading infectious cause of death in children under 5 years of age worldwide. Pneumococcal disease follows a seasonal pattern with increased incidence during winter. Pneumonia burden is also associated with poor air quality. Nasopharyngeal carriage of the bacterium is a pre-requisite of invasive disease. We aimed to determine if susceptibility to nasopharyngeal pneumococcal carriage varied by season and which environmental factors might explain such variation. We also evaluated the influence of sex on susceptibility of carriage. We collated data from five studies in which human volunteers underwent intranasal pneumococcal challenge. Generalised linear mixed-effects models were used to identify factors associated with altered risk of carriage acquisition, specifically climate and air-quality data. During 2011-2017, 374 healthy adults were challenged with type 6B pneumococcus. Odds of carriage were significantly lower in males (OR, 0.61; 95% CI, 0.40-0.92; p=0.02), and higher with cooler temperatures (OR, 0.79; 95% CI, 0.63-0.99; p=0.04). Likelihood of carriage was also associated with lower concentrations of local fine particulate matter concentrations (PM2.5) and increased local rainfall. In contrast to epidemiological series, experimental challenge allowed us to test propensity to acquisition during controlled exposures; immunological explanations for sex and climatic differences should be sought.
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Affiliation(s)
| | | | - Carla Solórzano
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Britta Urban
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Andrea M. Collins
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Elena Mitsi
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Sherin Pojar
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Elissavet Nikolaou
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Esther L. German
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Jesús Reiné
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Stephen B. Gordon
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
- Malawi-Liverpool-Wellcome Trust Clinical Research Programme, Blantyre, Malawi
| | - Simon P. Jochems
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Jamie Rylance
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
| | - Daniela M. Ferreira
- Dept of Clinical Sciences, Liverpool School of Tropical Medicine, Liverpool, UK
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11
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Kawakami T, Kasakura K, Kawakami Y, Ando T. Immunoglobulin E-Dependent Activation of Immune Cells in Rhinovirus-Induced Asthma Exacerbation. FRONTIERS IN ALLERGY 2022; 3:835748. [PMID: 35386658 PMCID: PMC8974681 DOI: 10.3389/falgy.2022.835748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 01/24/2022] [Indexed: 11/26/2022] Open
Abstract
Acute exacerbation is the major cause of asthma morbidity, mortality, and health-care costs. Respiratory viral infections, particularly rhinovirus (RV) infections, are associated with the majority of asthma exacerbations. The risk for bronchoconstriction with RV is associated with allergic sensitization and type 2 airway inflammation. The efficacy of the humanized anti-IgE monoclonal antibody omalizumab in treating asthma and reducing the frequency and severity of RV-induced asthma exacerbation is well-known. Despite these clinical data, mechanistic details of omalizumab's effects on RV-induced asthma exacerbation have not been well-defined for years due to the lack of appropriate animal models. In this Perspective, we discuss potential IgE-dependent roles of mast cells and dendritic cells in asthma exacerbations.
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Affiliation(s)
- Toshiaki Kawakami
- Laboratory of Allergic Diseases, Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, CA, United States
- Department of Dermatology, School of Medicine, University of California, San Diego, La Jolla, CA, United States
- *Correspondence: Toshiaki Kawakami
| | - Kazumi Kasakura
- Laboratory of Allergic Diseases, Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, CA, United States
| | - Yu Kawakami
- Laboratory of Allergic Diseases, Center for Autoimmunity and Inflammation, La Jolla Institute for Immunology, La Jolla, CA, United States
| | - Tomoaki Ando
- Atopy (Allergy) Research Center, Juntendo University Graduate School of Medicine, Tokyo, Japan
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12
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PM 2.5 Exacerbates Oxidative Stress and Inflammatory Response through the Nrf2/NF-κB Signaling Pathway in OVA-Induced Allergic Rhinitis Mouse Model. Int J Mol Sci 2021; 22:ijms22158173. [PMID: 34360939 PMCID: PMC8348225 DOI: 10.3390/ijms22158173] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 12/11/2022] Open
Abstract
Air pollution-related particulate matter (PM) exposure reportedly enhances allergic airway inflammation. Some studies have shown an association between PM exposure and a risk for allergic rhinitis (AR). However, the effect of PM for AR is not fully understood. An AR mouse model was developed by intranasal administration of 100 μg/mouse PM with a less than or equal to 2.5 μm in aerodynamic diameter (PM2.5) solution, and then by intraperitoneal injection of ovalbumin (OVA) with alum and intranasal challenging with 10 mg/mL OVA. The effects of PM2.5 on oxidative stress and inflammatory response via the Nrf2/NF-κB signaling pathway in mice with or without AR indicating by histological, serum, and protein analyses were examined. PM2.5 administration enhanced allergic inflammatory cell expression in the nasal mucosa through increasing the expression of inflammatory cytokine and reducing the release of Treg cytokine in OVA-induced AR mice, although PM2.5 exposure itself induced neither allergic responses nor damage to nasal and lung tissues. Notably, repeated OVA-immunization markedly impaired the nasal mucosa in the septum region. Moreover, AR with PM2.5 exposure reinforced this impairment in OVA-induced AR mice. Long-term PM2.5 exposure strengthened allergic reactions by inducing the oxidative through malondialdehyde production. The present study also provided evidence, for the first time, that activity of the Nrf2 signaling pathway is inhibited in PM2.5 exposed AR mice. Furthermore, PM2.5 exposure increased the histopathological changes of nasal and lung tissues and related the inflammatory cytokine, and clearly enhanced PM2.5 phagocytosis by alveolar macrophages via activating the NF-κB signaling pathway. These obtained results suggest that AR patients may experience exacerbation of allergic responses in areas with prolonged PM2.5 exposure.
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Martins Costa Gomes G, Karmaus W, Murphy VE, Gibson PG, Percival E, Hansbro PM, Starkey MR, Mattes J, Collison AM. Environmental Air Pollutants Inhaled during Pregnancy Are Associated with Altered Cord Blood Immune Cell Profiles. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18147431. [PMID: 34299892 PMCID: PMC8303567 DOI: 10.3390/ijerph18147431] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 07/02/2021] [Accepted: 07/07/2021] [Indexed: 12/11/2022]
Abstract
Air pollution exposure during pregnancy may be a risk factor for altered immune maturation in the offspring. We investigated the association between ambient air pollutants during pregnancy and cell populations in cord blood from babies born to mothers with asthma enrolled in the Breathing for Life Trial. For each patient (n = 91), daily mean ambient air pollutant levels were extracted during their entire pregnancy for sulfur dioxide (SO2), nitric oxide, nitrogen dioxide, carbon monoxide, ozone, particulate matter <10 μm (PM10) or <2.5 μm (PM2.5), humidity, and temperature. Ninety-one cord blood samples were collected, stained, and assessed using fluorescence-activated cell sorting (FACS). Principal Component (PC) analyses of both air pollutants and cell types with linear regression were employed to define associations. Considering risk factors and correlations between PCs, only one PC from air pollutants and two from cell types were statistically significant. PCs from air pollutants were characterized by higher PM2.5 and lower SO2 levels. PCs from cell types were characterized by high numbers of CD8 T cells, low numbers of CD4 T cells, and by high numbers of plasmacytoid dendritic cells (pDC) and low numbers of myeloid DCs (mDCs). PM2.5 levels during pregnancy were significantly associated with high numbers of pDCs (p = 0.006), and SO2 with high numbers of CD8 T cells (p = 0.002) and low numbers of CD4 T cells (p = 0.011) and mDCs (p = 4.43 × 10−6) in cord blood. These data suggest that ambient SO2 and PM2.5 exposure are associated with shifts in cord blood cell types that are known to play significant roles in inflammatory respiratory disease in childhood.
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Affiliation(s)
- Gabriela Martins Costa Gomes
- Priority Research Centre GrowUpWell®, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW 2308, Australia; (G.M.C.G.); (V.E.M.); (E.P.); (J.M.)
| | - Wilfried Karmaus
- School of Public Health, University of Memphis, Memphis, TN 38152, USA;
| | - Vanessa E. Murphy
- Priority Research Centre GrowUpWell®, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW 2308, Australia; (G.M.C.G.); (V.E.M.); (E.P.); (J.M.)
| | - Peter G. Gibson
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Newcastle, NSW 2308, Australia; (P.G.G.); (P.M.H.)
- Sleep Medicine Department, John Hunter Hospital, Newcastle, NSW 2305, Australia
| | - Elizabeth Percival
- Priority Research Centre GrowUpWell®, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW 2308, Australia; (G.M.C.G.); (V.E.M.); (E.P.); (J.M.)
| | - Philip M. Hansbro
- Priority Research Centre for Healthy Lungs, Hunter Medical Research Institute, University of Newcastle, Newcastle, NSW 2308, Australia; (P.G.G.); (P.M.H.)
- Centre for Inflammation, Centenary Institute and University of Technology Sydney, School of Life Sciences, Faculty of Science, Sydney, NSW 2007, Australia
| | - Malcolm R. Starkey
- Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC 3800, Australia;
| | - Joerg Mattes
- Priority Research Centre GrowUpWell®, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW 2308, Australia; (G.M.C.G.); (V.E.M.); (E.P.); (J.M.)
- Paediatric Respiratory & Sleep Medicine Department, John Hunter Children’s Hospital, Newcastle, NSW 2305, Australia
| | - Adam M. Collison
- Priority Research Centre GrowUpWell®, Hunter Medical Research Institute, The University of Newcastle, Newcastle, NSW 2308, Australia; (G.M.C.G.); (V.E.M.); (E.P.); (J.M.)
- Correspondence: ; Tel.: +61-2-4042-0219
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Liu M, Shi Z, Yin Y, Wang Y, Mu N, Li C, Ma H, Wang Q. Particulate matter 2.5 triggers airway inflammation and bronchial hyperresponsiveness in mice by activating the SIRT2-p65 pathway. Front Med 2021; 15:750-766. [PMID: 34181194 DOI: 10.1007/s11684-021-0839-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 11/24/2020] [Indexed: 12/14/2022]
Abstract
Exposure to particulate matter 2.5 (PM2.5) potentially triggers airway inflammation by activating nuclear factor-κB (NF-κB). Sirtuin 2 (SIRT2) is a key modulator in inflammation. However, the function and specific mechanisms of SIRT2 in PM2.5-induced airway inflammation are largely understudied. Therefore, this work investigated the mechanisms of SIRT2 in regulating the phosphorylation and acetylation of p65 influenced by PM2.5-induced airway inflammation and bronchial hyperresponsiveness. Results revealed that PM2.5 exposure lowered the expression and activity of SIRT2 in bronchial tissues. Subsequently, SIRT2 impairment promoted the phosphorylation and acetylation of p65 and activated the NF-κB signaling pathway. The activation of p65 triggered airway inflammation, increment of mucus secretion by goblet cells, and acceleration of tracheal stenosis. Meanwhile, p65 phosphorylation and acetylation, airway inflammation, and bronchial hyperresponsiveness were deteriorated in SIRT2 knockout mice exposed to PM2.5. Triptolide (a specific p65 inhibitor) reversed p65 activation and ameliorated PM2.5-induced airway inflammation and bronchial hyperresponsiveness. Our findings provide novel insights into the molecular mechanisms underlying the toxicity of PM2.5 exposure. Triptolide inhibition of p65 phosphorylation and acetylation could be an effective therapeutic approach in averting PM2.5-induced airway inflammation and bronchial hyperresponsiveness.
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Affiliation(s)
- Manling Liu
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China
| | - Zhaoling Shi
- Department of Pediatrics, Second Affiliated Hospital of Shaanxi University of Chinese Medicine, Xianyang, 712046, China
| | - Yue Yin
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China
| | - Yishi Wang
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China
| | - Nan Mu
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China
| | - Chen Li
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China.
| | - Heng Ma
- Department of Physiology and Pathophysiology, Fourth Military Medical University, Xi'an, 710032, China.
| | - Qiong Wang
- Department of Cardiovascular Medicine, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, China.
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15
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Pang L, Yu P, Liu X, Fan Y, Shi Y, Zou S. Fine particulate matter induces airway inflammation by disturbing the balance between Th1/Th2 and regulation of GATA3 and Runx3 expression in BALB/c mice. Mol Med Rep 2021; 23:378. [PMID: 33760131 PMCID: PMC7986036 DOI: 10.3892/mmr.2021.12017] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Accepted: 01/27/2021] [Indexed: 12/24/2022] Open
Abstract
The present study aimed to examine the effects of 2.5 µm particulate matter (PM2.5) on airway inflammation and to investigate the possible underlying mechanism. Specifically, the focus was on the imbalance of T helper (Th)1/Th2 cells and the dysregulated expression of transcription factors, including trans-acting T cell-specific transcription factor 3 (GATA3), runt-related transcription factor 3 (Runx3) and T-box transcription factor TBX21 (T-bet). In this study, ambient PM2.5 was collected and analyzed, male BALB/c mice were sensitized and treated with PBS, ovalbumin (OVA), PM2.5 or OVA + PM2.5. The effects of PM2.5 alone or PM2.5 + OVA on immunopathological changes, the expression of transcription factors GATA3, Runx3 and T-bet, and the imbalance of Th1/Th2 were investigated. It was found that PM2.5 + OVA co-exposure significantly enhanced inflammatory cell infiltration, increased higher tracheal secretions in lung tissue and upregulated respiratory resistance response to acetylcholine compared with PM2.5 or OVA single exposure and control groups. In addition, higher protein and mRNA expression levels of Th2 inflammatory mediators interleukin (IL)-4, IL-5 and IL-13 in bronchoalveolar lavage fluid were observed in PM2.5 + OVA treated mice, whereas the expression levels of GATA3 and STAT6 were exhibited in mice exposed to OVA + PM2.5 compared with the OVA and PM2.5 groups. By contrast, PM2.5 exposure decreased the protein and mRNA expression levels of Th1 cytokine interferon-γ and transcription factors Runx3 and T-bet, especially among asthmatic mice, different from OVA group, PM2.5 exposure only failed to influence the expression of T-bet. To conclude, PM2.5 exposure evoked the allergic airway inflammation response, especially in the asthmatic mouse model and led to Th1/Th2 imbalance. These effects worked mainly by upregulating GATA3 and downregulating Runx3. These data suggested that Runx3 may play an important role in PM2.5-aggravated asthma in BALB/c mice.
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Affiliation(s)
- Lingling Pang
- Shandong University, Jinan, Shandong 250100, P.R. China
| | - Pengfei Yu
- Shandong University, Jinan, Shandong 250100, P.R. China
| | - Xueping Liu
- Department of Respiratory Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Yingqi Fan
- Department of Respiratory Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
| | - Ying Shi
- Department of Respiratory Medicine, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu 210006, P.R. China
| | - Shenchun Zou
- Department of Respiratory Medicine, Yantai Yuhuangding Hospital, Yantai, Shandong 264000, P.R. China
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das Neves J, Sverdlov Arzi R, Sosnik A. Molecular and cellular cues governing nanomaterial-mucosae interactions: from nanomedicine to nanotoxicology. Chem Soc Rev 2021; 49:5058-5100. [PMID: 32538405 DOI: 10.1039/c8cs00948a] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mucosal tissues constitute the largest interface between the body and the surrounding environment and they regulate the access of molecules, supramolecular structures, particulate matter, and pathogens into it. All mucosae are characterized by an outer mucus layer that protects the underlying cells from physicochemical, biological and mechanical insults, a mono-layered or stratified epithelium that forms tight junctions and controls the selective transport of solutes across it and associated lymphoid tissues that play a sentinel role. Mucus is a gel-like material comprised mainly of the glycoprotein mucin and water and it displays both hydrophilic and hydrophobic domains, a net negative charge, and high porosity and pore interconnectivity, providing an efficient barrier for the absorption of therapeutic agents. To prolong the residence time, absorption and bioavailability of a broad spectrum of active compounds upon mucosal administration, mucus-penetrating and mucoadhesive particles have been designed by tuning the chemical composition, the size, the density, and the surface properties. The benefits of utilizing nanomaterials that interact intimately with mucosae by different mechanisms in the nanomedicine field have been extensively reported. To ensure the safety of these nanosystems, their compatibility is evaluated in vitro and in vivo in preclinical and clinical trials. Conversely, there is a growing concern about the toxicity of nanomaterials dispersed in air and water effluents that unintentionally come into contact with the airways and the gastrointestinal tract. Thus, deep understanding of the key nanomaterial properties that govern the interplay with mucus and tissues is crucial for the rational design of more efficient drug delivery nanosystems (nanomedicine) and to anticipate the fate and side-effects of nanoparticulate matter upon acute or chronic exposure (nanotoxicology). This review initially overviews the complex structural features of mucosal tissues, including the structure of mucus, the epithelial barrier, the mucosal-associated lymphatic tissues and microbiota. Then, the most relevant investigations attempting to identify and validate the key particle features that govern nanomaterial-mucosa interactions and that are relevant in both nanomedicine and nanotoxicology are discussed in a holistic manner. Finally, the most popular experimental techniques and the incipient use of mathematical and computational models to characterize these interactions are described.
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Affiliation(s)
- José das Neves
- i3S - Instituto de Investigação e Inovação em Saúde & INEB - Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Roni Sverdlov Arzi
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, De-Jur Building, Office 607, Haifa, 3200003, Israel.
| | - Alejandro Sosnik
- Laboratory of Pharmaceutical Nanomaterials Science, Department of Materials Science and Engineering, Technion-Israel Institute of Technology, De-Jur Building, Office 607, Haifa, 3200003, Israel.
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Unraveling the blood transcriptome after real-life exposure of Wistar-rats to PM2.5, PM1 and water-soluble metals in the ambient air. Toxicol Rep 2020; 7:1469-1479. [PMID: 33194559 PMCID: PMC7645421 DOI: 10.1016/j.toxrep.2020.10.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Revised: 10/15/2020] [Accepted: 10/16/2020] [Indexed: 12/24/2022] Open
Abstract
Development of a “real-life” exposure system to ambient PM1 and PM2.5 particles for Wistar rats. Blood transcriptome analysis identified differentially expressed genes as candidate biomarkers in PM1 and PM2.5 groups. Pathway analysis revealed differentially regulated gene expression in inflammation signaling. Identification of candidate metals for possible correlation with the identified candidate genes leading to the development of AOPs.
Exposure to particulate matter (PM) is one of the most important environmental issues in Europe with major health impact. Various sizes of PM are suspended in the atmosphere and contributes to ambient air pollution. The current study aimed to explore the differential gene expression in blood, and the effect on the respective biological signaling pathways in Wistar rats, after exposure to PM2.5 and PM1 ambient air particles for an eight-week period. A control group was included with animals breathing non-filtered atmospheric air. In parallel, filtered PM2.5 and PM1 was collected in separate samplers. The results after whole genome microarray analysis showed 23 differentially expressed genes (DEGs) between control and PM2.5 group. In addition, pairwise comparison between control and PM1 group displayed 5635 DEGs linked to 69 biological pathways involved in inflammatory response, cell cycle and carcinogenicity. The smaller the size of the inhaled particles, the more gene alterations are triggered compared to non-filtered air group. More specifically, in inflammation signaling procedures differentially regulated gene expression was shown for interleukin-4 (IL-4), IL-7, IL-1, IL-5, IL-9, IL-6 and IL-2. We have identified that RASGFR1, TRIM65, TRIM33, PLEKHB1, CAR4, S100A8, S100A9, ALPL, NP4 and the PROK2 genes are potential targets for the development of adverse outcome pathways (AOPs) due to “real-life” exposure of Wistar rats. Particle measurements during the exposure period showed elevated concentrations of Fe, Mn and Zn in both PM1 and PM2.5 filter fractions, and of Cu in PM2.5. In addition, water-soluble concentration of metals showed significant differences between PM1 and PM2.5 fractions for V, Zn, As, Pb and Mn. In summary, in this study specific gene biomarkers of exposure to ambient air have been identified and heavy metals that are possibly linked to their altered regulation have been found. The results of this research will pave the way for the development of novel AOPs concerning the health effects of the environmental pollution.
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18
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Cong L, Li T, Wang H, Wu Y, Wang S, Zhao Y, Zhang G, Duan J. IL-17A-producing T cells exacerbate fine particulate matter-induced lung inflammation and fibrosis by inhibiting PI3K/Akt/mTOR-mediated autophagy. J Cell Mol Med 2020; 24:8532-8544. [PMID: 32643865 PMCID: PMC7412687 DOI: 10.1111/jcmm.15475] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 02/24/2020] [Accepted: 05/24/2020] [Indexed: 12/13/2022] Open
Abstract
Fine particulate matter (PM2.5) is the primary air pollutant that is able to induce airway injury. Compelling evidence has shown the involvement of IL-17A in lung injury, while its contribution to PM2.5-induced lung injury remains largely unknown. Here, we probed into the possible role of IL-17A in mouse models of PM2.5-induced lung injury. Mice were instilled with PM2.5 to construct a lung injury model. Flow cytometry was carried out to isolate γδT and Th17 cells. ELISA was adopted to detect the expression of inflammatory factors in the supernatant of lavage fluid. Primary bronchial epithelial cells (mBECs) were extracted, and the expression of TGF signalling pathway-, autophagy- and PI3K/Akt/mTOR signalling pathway-related proteins in mBECs was detected by immunofluorescence assay and Western blot analysis. The mitochondrial function was also evaluated. PM2.5 aggravated the inflammatory response through enhancing the secretion of IL-17A by γδT/Th17 cells. Meanwhile, PM2.5 activated the TGF signalling pathway and induced EMT progression in bronchial epithelial cells, thereby contributing to pulmonary fibrosis. Besides, PM2.5 suppressed autophagy of bronchial epithelial cells by up-regulating IL-17A, which in turn activated the PI3K/Akt/mTOR signalling pathway. Furthermore, IL-17A impaired the energy metabolism of airway epithelial cells in the PM2.5-induced models. This study suggested that PM2.5 could inhibit autophagy of bronchial epithelial cells and promote pulmonary inflammation and fibrosis by inducing the secretion of IL-17A in γδT and Th17 cells and regulating the PI3K/Akt/mTOR signalling pathway.
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Affiliation(s)
- Lu‐Hong Cong
- Department of EmergencyChina‐Japan Friendship HospitalBeijingChina
| | - Tao Li
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
| | - Hui Wang
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
| | - Yi‐Na Wu
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
| | - Shu‐Peng Wang
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
| | - Yu‐Yue Zhao
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
| | - Guo‐Qiang Zhang
- Department of EmergencyChina‐Japan Friendship HospitalBeijingChina
| | - Jun Duan
- Surgical Intensive Care UnitChina‐Japan Friendship HospitalBeijingChina
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19
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Li Y, Sun B, Shi Y, Jiang J, Du Z, Chen R, Duan J, Sun Z. Subacute exposure of PM 2.5 induces airway inflammation through inflammatory cell infiltration and cytokine expression in rats. CHEMOSPHERE 2020; 251:126423. [PMID: 32171134 DOI: 10.1016/j.chemosphere.2020.126423] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/08/2020] [Accepted: 03/03/2020] [Indexed: 06/10/2023]
Abstract
Accumulating evidences support that exposure to fine particulate matter (PM2.5) could cause inflammation of the airway, but its underlying mechanisms are less known. Our study aimed to explore the potential effect of non-canonical NF-κB signaling pathway in airway inflammation, which caused by PM2.5, and the possible regulatory relationship between miR-6747-5p and NF-κB2. The histological analysis from in vivo study manifested that PM2.5 could induce the exudation and infiltration of polymorphonuclear leukocytes (PMNs). Immunohistochemistry results of lung tissues showed that PM2.5 increased ICAM-1, 6Ckine, SDF-1 and BAFF positive staining with a dose-dependent manner. In addition, PM2.5 could induce the p52 nuclear translocation to trigger non-canonical NF-κB signaling pathway in lung tissues and BEAS-2B cells. Targetscan reporter gene assay showed that there was a target regulatory relationship between miR-6747-5p and NF-κB2. Besides, the chemical mimics of miR-6747-5p weakened the activation of non-canonical NF-κB signaling pathway induced by PM2.5. In summary, exposure to PM2.5 could trigger airway inflammation by activating the non-canonical NF-κB signaling pathway, which may be related to the negative feedback regulation mechanism of miR-6747-5p. Our findings will give new ideas into the toxic effects of airway inflammation triggered by PM2.5.
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Affiliation(s)
- Yang Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Baiyang Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Yanfeng Shi
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Jinjin Jiang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Zhou Du
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Rui Chen
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
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20
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Zhao J, Mi X, Zhao L, Midgley AC, Tang H, Tian M, Yan H, Wang K, Wang R, Wan Y, Kong D, Mao H, Wang T. Validation of PM 2.5 model particle through physicochemical evaluation and atherosclerotic plaque formation in ApoE -/- mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 192:110308. [PMID: 32058168 DOI: 10.1016/j.ecoenv.2020.110308] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Revised: 01/14/2020] [Accepted: 02/05/2020] [Indexed: 06/10/2023]
Abstract
PM2.5 particles are regarded as prominent risk factors that contribute to the development of atherosclerosis. However, the composition of PM2.5 is rather complicated. This study aimed to provide a model particle that simulates the behavior of actual PM2.5, for subsequent use in exploring mechanisms and major complications arising from PM2.5. To establish model particles of PM2.5, a series of monodisperse SiO2 microspheres with different average grain diameters were mixed according to the size distribution of actual PM2.5. The organic carbon (OC) was removed from PM2.5 and coated onto the SiO2 model particle, to formulate simulant PM2.5. Results showed that the size distribution of the model particle was highly approximate to that of the PM2.5 core. The polycyclic aromatic hydrocarbon (PAHs) composition profile of the simulated PM2.5 were approximate to PM2.5, and loading efficiency was approximately 80%-120%. Furthermore, compared to the control, SiO2-only model particle had negligible cytotoxicity on cell viability and oxidative stress of HUVECs, and marginal effect on the lipid metabolism and atherosclerotic plaque formation in ApoE-/- mice. In contrast, simulated PM2.5 exhibited similar cytotoxic and detrimental effects on lipid metabolism and atherosclerotic plaque formation with actual PM2.5. Traffic-related PM2.5 had negative effects on endothelial function and led to the formation of atherosclerosis via oxidative stress. The simulated PM2.5 simulated the outcomes of actual PM2.5 exposure. Here, we show that SiO2 particle model cores coated with OC could significantly assist in the evaluation of the effects of specific organic compositions bound on PM2.5, specifically in the context of environmental health and safety.
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Affiliation(s)
- Jingbo Zhao
- Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Xingyan Mi
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Lili Zhao
- Department of Hepatology, Tianjin Second People's Hospital, Tianjin Institute of Hepatology, Tianjin, 300192, China
| | - Adam C Midgley
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Haoyu Tang
- Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Mengya Tian
- Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China
| | - Hongyu Yan
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Kai Wang
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Rui Wang
- College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Yajuan Wan
- College of Life Sciences, Nankai University, Tianjin, 300071, China
| | - Deling Kong
- Key Laboratory of Bioactive Materials, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071, China.
| | - Hongjun Mao
- Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
| | - Ting Wang
- Center for Urban Transport Emission Research, State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin, 300071, China.
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21
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Li P, Wang J, Guo F, Zheng B, Zhang X. A novel inhibitory role of microRNA-224 in particulate matter 2.5-induced asthmatic mice by inhibiting TLR2. J Cell Mol Med 2020; 24:3040-3052. [PMID: 31978265 PMCID: PMC7077591 DOI: 10.1111/jcmm.14940] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 09/19/2019] [Accepted: 12/16/2019] [Indexed: 01/12/2023] Open
Abstract
Epidemiological studies have shown that elevated concentrations of particulate matter 2.5 (PM2.5) correlate with increased incidence of asthma. Studies have highlighted the implication of microRNAs (miRNAs) in asthmatic response. Here, the objective of this study is to explore the effect of miR-224 on PM2.5-induced asthmatic mice. Ovalbumin (OVA) was utilized to establish asthmatic mouse models, which were then exposed to PM2.5, followed by miR-224 expression detection. Next, lesions and collagen deposition area in lung tissue, ratio Treg/Th17, the expression of TLR4 and MYD88, inflammation, eosinophils (EOS) and airway remodelling were evaluated in OVA mice after injection with miR-224 agomir. Following isolation of mouse primary bronchial epithelial cells, miR-224 mimic and TLR2/TLR4 inhibitor were introduced to assess inflammation and the expression of TGF-β, MMP9, TIMP-1, Foxp3, RORγt, TLR2, TLR4 and MYD88. After exposure to PM2.5, lesions and collagen deposition were promoted in lung tissues, inflammation and EOS were increased in bronchoalveolar lavage fluid (BALF), and airway remodelling was enhanced in OVA mice. miR-224 was down-regulated, whereas TLR2/TLR4/MYD88 was up-regulated in OVA mice after treatment with PM2.5, accompanied by Treg/Th17 immune imbalance. Of note, bioinformatic prediction and dual luciferase reporter gene assay confirmed that TLR2 was a target gene of miR-224. Overexpressed miR-224 reduced expression of TGF-β, MMP9, TIMP-1 and RORγt and inflammation but increased Foxp3 expression in bronchial epithelial cells through down-regulating TLR2. In summary, overexpressed miR-224 suppressed airway epithelial cell inflammation and airway remodelling in PM2.5-induced asthmatic mice through decreasing TLR2 expression.
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Affiliation(s)
- Ping Li
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Jinpeng Wang
- Department of Cardiology, The Second Hospital of Jilin University, Changchun, China
| | - Fengjun Guo
- Department of Gynaecology and Obstetrics, The Second Hospital of Jilin University, Changchun, China
| | - Baihong Zheng
- Department of Pediatrics, The Second Hospital of Jilin University, Changchun, China
| | - Xuelei Zhang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun, China
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22
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Zhang S, Zhang W, Zeng X, Zhao W, Wang Z, Dong X, Jia Y, Shen J, Chen R, Lin X. Inhibition of Rac1 activity alleviates PM2.5-induced pulmonary inflammation via the AKT signaling pathway. Toxicol Lett 2019; 310:61-69. [DOI: 10.1016/j.toxlet.2019.04.017] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Revised: 03/05/2019] [Accepted: 04/11/2019] [Indexed: 01/09/2023]
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