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Zhang D, Chen K, Shan LS. Meta-analysis and transcriptomic analysis reveal that NKRF and ZBTB17 regulate the NF-κB signaling pathway, contributing to the shared molecular mechanisms of Alzheimer's disease and atherosclerosis. CNS Neurosci Ther 2024; 30:e14683. [PMID: 38738952 PMCID: PMC11090078 DOI: 10.1111/cns.14683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/26/2023] [Accepted: 01/15/2024] [Indexed: 05/14/2024] Open
Abstract
INTRODUCTION Alzheimer's disease (AD) and atherosclerosis (AS) are widespread diseases predominantly observed in the elderly population. Despite their prevalence, the underlying molecular interconnections between these two conditions are not well understood. METHODS Utilizing meta-analysis, bioinformatics methodologies, and the GEO database, we systematically analyzed transcriptome data to pinpoint key genes concurrently differentially expressed in AD and AS. Our experimental validations in mouse models highlighted the prominence of two genes, NKRF (NF-κB-repressing factor) and ZBTB17 (MYC-interacting zinc-finger protein 1). RESULTS These genes appear to influence the progression of both AD and AS by modulating the NF-κB signaling pathway, as confirmed through subsequent in vitro and in vivo studies. CONCLUSIONS This research uncovers a novel shared molecular pathway between AD and AS, underscoring the significant roles of NKRF and ZBTB17 in the pathogenesis of these disorders.
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Affiliation(s)
- Di Zhang
- Department of CardiologyShengjing Hospital of China Medical UniversityShenyangLiaoningChina
| | - Keyan Chen
- Laboratory Animal Science of China Medical UniversityShenyangLiaoningChina
| | - Li Shen Shan
- Department of PediatricsShengjing Hospital of China Medical UniversityShenyangLiaoningChina
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Xie X, Zhang X, Li S, Du W. Involvement of Fgf2-mediated tau protein phosphorylation in cognitive deficits induced by sevoflurane in aged rats. Mol Med 2024; 30:39. [PMID: 38493090 PMCID: PMC10943822 DOI: 10.1186/s10020-024-00784-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Accepted: 01/11/2024] [Indexed: 03/18/2024] Open
Abstract
OBJECTIVE Anesthetics have been linked to cognitive alterations, particularly in the elderly. The current research delineates how Fibroblast Growth Factor 2 (Fgf2) modulates tau protein phosphorylation, contributing to cognitive impairments in aged rats upon sevoflurane administration. METHODS Rats aged 3, 12, and 18 months were subjected to a 2.5% sevoflurane exposure to form a neurotoxicity model. Cognitive performance was gauged, and the GEO database was employed to identify differentially expressed genes (DEGs) in the 18-month-old cohort post sevoflurane exposure. Bioinformatics tools, inclusive of STRING and GeneCards, facilitated detailed analysis. Experimental validations, both in vivo and in vitro, examined Fgf2's effect on tau phosphorylation. RESULTS Sevoflurane notably altered cognitive behavior in older rats. Out of 128 DEGs discerned, Fgf2 stood out as instrumental in regulating tau protein phosphorylation. Sevoflurane exposure spiked Fgf2 expression in cortical neurons, intensifying tau phosphorylation via the PI3K/AKT/Gsk3b trajectory. Diminishing Fgf2 expression correspondingly curtailed tau phosphorylation, neurofibrillary tangles, and enhanced cognitive capacities in aged rats. CONCLUSION Sevoflurane elicits a surge in Fgf2 expression in aging rats, directing tau protein phosphorylation through the PI3K/AKT/Gsk3b route, instigating cognitive aberrations.
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Affiliation(s)
- Xin Xie
- Department of Anesthesiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dandong District, Liaoning Province, Shenyang, 110042, P. R. China
| | - Xiaomin Zhang
- Department of Anesthesiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dandong District, Liaoning Province, Shenyang, 110042, P. R. China
| | - Songze Li
- Department of Anesthesiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dandong District, Liaoning Province, Shenyang, 110042, P. R. China
| | - Wei Du
- Department of Anesthesiology, Cancer Hospital of China Medical University, Liaoning Cancer Hospital & Institute, No. 44, Xiaoheyan Road, Dandong District, Liaoning Province, Shenyang, 110042, P. R. China.
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Wang Q, He Z, Zhu J, Hu M, Yang L, Yang H. Polyphyllin B inhibited STAT3/NCOA4 pathway and restored gut microbiota to ameliorate lung tissue injury in cigarette smoke-induced mice. BMC Biotechnol 2024; 24:13. [PMID: 38459479 PMCID: PMC10921762 DOI: 10.1186/s12896-024-00837-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 02/15/2024] [Indexed: 03/10/2024] Open
Abstract
OBJECTIVE Smoking was a major risk factor for chronic obstructive pulmonary disease (COPD). This study plan to explore the mechanism of Polyphyllin B in lung injury induced by cigarette smoke (CSE) in COPD. METHODS Network pharmacology and molecular docking were applied to analyze the potential binding targets for Polyphyllin B and COPD. Commercial unfiltered CSE and LPS were used to construct BEAS-2B cell injury in vitro and COPD mouse models in vivo, respectively, which were treated with Polyphyllin B or fecal microbiota transplantation (FMT). CCK8, LDH and calcein-AM were used to detect the cell proliferation, LDH level and labile iron pool. Lung histopathology, Fe3+ deposition and mitochondrial morphology were observed by hematoxylin-eosin, Prussian blue staining and transmission electron microscope, respectively. ELISA was used to measure inflammation and oxidative stress levels in cells and lung tissues. Immunohistochemistry and immunofluorescence were applied to analyze the 4-HNE, LC3 and Ferritin expression. RT-qPCR was used to detect the expression of FcRn, pIgR, STAT3 and NCOA4. Western blot was used to detect the expression of Ferritin, p-STAT3/STAT3, NCOA4, GPX4, TLR2, TLR4 and P65 proteins. 16S rRNA gene sequencing was applied to detect the gut microbiota. RESULTS Polyphyllin B had a good binding affinity with STAT3 protein, which as a target gene in COPD. Polyphyllin B inhibited CS-induced oxidative stress, inflammation, mitochondrial damage, and ferritinophagy in COPD mice. 16S rRNA sequencing and FMT confirmed that Akkermansia and Escherichia_Shigella might be the potential microbiota for Polyphyllin B and FMT to improve CSE and LPS-induced COPD, which were exhausted by the antibiotics in C + L and C + L + P mice. CSE and LPS induced the decrease of cell viability and the ferritin and LC3 expression, and the increase of NCOA4 and p-STAT3 expression in BEAS-2B cells, which were inhibited by Polyphyllin B. Polyphyllin B promoted ferritin and LC3II/I expression, and inhibited p-STAT3 and NCOA4 expression in CSE + LPS-induced BEAS-2B cells. CONCLUSION Polyphyllin B improved gut microbiota disorder and inhibited STAT3/NCOA4 pathway to ameliorate lung tissue injury in CSE and LPS-induced mice.
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Affiliation(s)
- Qing Wang
- The Affiliated Changsha Central Hospital, Department of Respiratory and Critical Care Medicine, Hengyang Medical School, University of South China, Changsha, Hunan, 410004, China
| | - Zhiyi He
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Guangxi Medical University, Nanning, 530021, Guangxi, China
| | - Jinqi Zhu
- The Affiliated Changsha Central Hospital, Department of Respiratory and Critical Care Medicine, Hengyang Medical School, University of South China, Changsha, Hunan, 410004, China
| | - Mengyun Hu
- The Affiliated Changsha Central Hospital, Department of Respiratory and Critical Care Medicine, Hengyang Medical School, University of South China, Changsha, Hunan, 410004, China
| | - Liu Yang
- The Affiliated Changsha Central Hospital, Department of Respiratory and Critical Care Medicine, Hengyang Medical School, University of South China, Changsha, Hunan, 410004, China
| | - Hongzhong Yang
- The Affiliated Changsha Central Hospital, Department of Respiratory and Critical Care Medicine, Hengyang Medical School, University of South China, Changsha, Hunan, 410004, China.
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Lv H, Chen K, Zhang D. Exploring the diagnostic value of blood circular RNA in atherosclerotic cardiovascular diseases by integrating bioinformatics and evidence-based medicine meta-analysis. Int J Biol Macromol 2024; 261:129386. [PMID: 38218302 DOI: 10.1016/j.ijbiomac.2024.129386] [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: 08/23/2023] [Revised: 12/21/2023] [Accepted: 12/29/2023] [Indexed: 01/15/2024]
Abstract
This meta-analysis aimed to investigate the diagnostic value of blood circular RNA (circRNA) in atherosclerotic cardiovascular diseases (AS). Using bioinformatics and evidence-based medicine, we identified circ_0001900 as a potential biomarker for diagnosing AS-related cardiovascular diseases. Bioinformatics analysis indicated that circ_0001900 may participate in AS progression by regulating lipid and atherosclerosis-related genes on the MAPK1/3, SRC, TRAF6, and STAT3 signaling pathways. In vivo results showed that circ_0001900 was significantly up-regulated in AS mouse and AS patients' peripheral blood (PB), serum, serum serum extracellular vesicles (EVs), and peripheral blood mononuclear cells (PBMCs), with good diagnostic efficacy as evaluated by ROC curve analysis. Circ_0001900 knockout inhibited AS progression, which may be related to the regulation of these signaling pathways. These findings suggest that circ_0001900 may serve as a potential diagnostic and therapeutic target for AS-related cardiovascular diseases.
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Affiliation(s)
- Huina Lv
- Department of Ultrasound, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - Keyan Chen
- Laboratory Animal Science of China Medical University, Shenyang, Liaoning 110122, China.
| | - Di Zhang
- Department of Cardiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning 110004, China.
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Jia Q, Wang H, Wang Y, Xue W, Jiang Q, Wang J, Ning F, Zhu Z, Tian L. Investigation of the mechanism of silica-induced pulmonary fibrosis: The role of lung microbiota dysbiosis and the LPS/TLR4 signaling pathway. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 912:168948. [PMID: 38048996 DOI: 10.1016/j.scitotenv.2023.168948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/15/2023] [Revised: 11/25/2023] [Accepted: 11/25/2023] [Indexed: 12/06/2023]
Abstract
The widespread manufacture of silica and its extensive use, and potential release of silica into the environment pose a serious human health hazard. Silicosis, a severe global public health issue, is caused by exposure to silica, leading to persistent inflammation and fibrosis of the lungs. The underlying pathogenic mechanisms of silicosis remain elusive. Lung microbiota dysbiosis is associated with the development of inflammation and fibrosis. However, limited information is currently available regarding the role of lung microbiota in silicosis. The study therefore is designed to conduct a comprehensive analysis of the role of lung microbiota dysbiosis and establish a basis for future investigations into the potential mechanisms underlying silicosis. Here, the pathological and biochemical parameters were used to systematically assessed the degree of inflammation and fibrosis following silica exposure and treatment with combined antibiotics. The underlying mechanisms were studied via integrative multi-omics analyses of the transcriptome and microbiome. Analysis of 16S ribosomal DNA revealed dysbiosis of the microbial community in silicosis, characterized by a predominance of gram-negative bacteria. Exposure to silica has been shown to trigger lung inflammation and fibrosis, leading to an increased concentration of lipopolysaccharides in the bronchoalveolar lavage fluid. Furthermore, Toll-like receptor 4 was identified as a key molecule in the lung microbiota dysbiosis associated with silica-induced lung fibrosis. All of these outcomes can be partially controlled through combined antibiotic administration. The study findings demonstrate that the dysbiosis of lung microbiota enhances silica-induced fibrosis associated with the lipopolysaccharides/Toll-like receptor 4 pathway and provided a promising target for therapeutic intervention of silicosis.
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Affiliation(s)
- Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Hongwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Wenming Xue
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jiaxin Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Fuao Ning
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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Yang W, Xi C, Yao H, Yuan Q, Zhang J, Chen Q, Wu G, Hu J. Oral administration of lysozyme protects against injury of ileum via modulating gut microbiota dysbiosis after severe traumatic brain injury. Front Cell Infect Microbiol 2024; 14:1304218. [PMID: 38352055 PMCID: PMC10861676 DOI: 10.3389/fcimb.2024.1304218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 01/16/2024] [Indexed: 02/16/2024] Open
Abstract
Objective The current study sought to clarify the role of lysozyme-regulated gut microbiota and explored the potential therapeutic effects of lysozyme on ileum injury induced by severe traumatic brain injury (sTBI) and bacterial pneumonia in vivo and in vitro experiments. Methods Male 6-8-week-old specific pathogen-free (SPF) C57BL/6 mice were randomly divided into Normal group (N), Sham group (S), sTBI group (T), sTBI + or Lysozyme-treated group (L), Normal + Lysozyme group (NL) and Sham group + Lysozyme group (SL). At the day 7 after establishment of the model, mice were anesthetized and the samples were collected. The microbiota in lungs and fresh contents of the ileocecum were analyzed. Lungs and distal ileum were used to detect the degree of injury. The number of Paneth cells and the expression level of lysozyme were assessed. The bacterial translocation was determined. Intestinal organoids culture and co-coculture system was used to test whether lysozyme remodels the intestinal barrier through the gut microbiota. Results After oral administration of lysozyme, the intestinal microbiota is rebalanced, the composition of lung microbiota is restored, and translocation of intestinal bacteria is mitigated. Lysozyme administration reinstates lysozyme expression in Paneth cells, thereby reducing intestinal permeability, pathological score, apoptosis rate, and inflammation levels. The gut microbiota, including Oscillospira, Ruminococcus, Alistipes, Butyricicoccus, and Lactobacillus, play a crucial role in regulating and improving intestinal barrier damage and modulating Paneth cells in lysozyme-treated mice. A co-culture system comprising intestinal organoids and brain-derived proteins (BP), which demonstrated that the BP effectively downregulated the expression of lysozyme in intestinal organoids. However, supplementation of lysozyme to this co-culture system failed to restore its expression in intestinal organoids. Conclusion The present study unveiled a virtuous cycle whereby oral administration of lysozyme restores Paneth cell's function, mitigates intestinal injury and bacterial translocation through the remodeling of gut microbiota.
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Affiliation(s)
- Weijian Yang
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
| | - Caihua Xi
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Haijun Yao
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qiang Yuan
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
| | - Jun Zhang
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
| | - Qifang Chen
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Department of Neurosurgery and Neurocritical Care, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
| | - Gang Wu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
| | - Jin Hu
- Department of Neurosurgery, Huashan Hospital, Shanghai Medical College, Fudan University, Shanghai, China
- National Center for Neurological Disorders, Shanghai, China
- Shanghai Key Laboratory of Brain Function Restoration and Neural Regeneration, Shanghai, China
- Neurosurgical Institute of Fudan University, Shanghai, China
- Shanghai Clinical Medical Center of Neurosurgery, Shanghai, China
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Bagon BB, Lee J, Matienzo ME, Lee SJ, Pak SW, Kim K, Lee J, Lee CM, Shin IS, Moon C, Park MJ, Kim DI. Cold-induced adaptive thermogenesis is impaired by exposure of Asian sand dust in mice. J Therm Biol 2023; 116:103675. [PMID: 37517326 DOI: 10.1016/j.jtherbio.2023.103675] [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: 01/11/2023] [Revised: 07/11/2023] [Accepted: 07/11/2023] [Indexed: 08/01/2023]
Abstract
Desertification and desert sandstorms caused by the worsening global warming pose increasing risks to human health. In particular, Asian sand dust (ASD) exposure has been related to an increase in mortality and hospital admissions for respiratory diseases. In this study, we investigated the effects of ASD on metabolic tissues in comparison to diesel particulate matter (DPM) that is known to cause adverse health effects. We found that larger lipid droplets were accumulated in the brown adipose tissues (BAT) of ASD-administered but not DPM-administered mice. Thermogenic gene expression was decreased in these mice as well. When ASD-administered mice were exposed to the cold, they failed to maintain their body temperature, suggesting that the ASD administration had led to impairments in cold-induced adaptive thermogenesis. However, impaired thermogenesis was not observed in DPM-administered mice. Furthermore, mice fed a high-fat diet that were chronically administered ASD demonstrated unexplained weight loss, indicating that chronic administration of ASD could be lethal in obese mice. We further identified that ASD-induced lung inflammation was not exacerbated in uncoupling protein 1 knockout mice, whose thermogenic capacity is impaired. Collectively, ASD exposure can impair cold-induced adaptive thermogenic responses in mice and increase the risk of mortality in obese mice.
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Affiliation(s)
- Bernadette B Bagon
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Junhyeong Lee
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea
| | - Merc Emil Matienzo
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea
| | - Se-Jin Lee
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Pharmacology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - So-Won Pak
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Pharmacology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Keon Kim
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Jeongmin Lee
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Chang-Min Lee
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Internal Medicine, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - In-Sik Shin
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Pharmacology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Changjong Moon
- College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea; Department of Veterinary Anatomy and Animal Behavior, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea
| | - Min-Jung Park
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea.
| | - Dong-Il Kim
- Department of Veterinary Physiology, College of Veterinary Medicine, Chonnam National University, Gwangju, 61186, South Korea; College of Veterinary Medicine and BK21 FOUR Program, Chonnam National University, Gwangju, 61186, South Korea.
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Walsh A, Russell AG, Weaver AM, Moyer J, Wyatt L, Ward-Caviness CK. Associations between source-apportioned PM 2.5 and 30-day readmissions in heart failure patients. ENVIRONMENTAL RESEARCH 2023; 228:115839. [PMID: 37024035 PMCID: PMC10273144 DOI: 10.1016/j.envres.2023.115839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 05/16/2023]
Abstract
BACKGROUND Air pollution exposure is a significant risk factor for morbidity and mortality, especially for those with pre-existing chronic disease. Previous studies highlighted the risks that long-term particulate matter exposure has for readmissions. However, few studies have evaluated source and component specific associations particularly among vulnerable patient populations. OBJECTIVES Use electronic health records from 5556 heart failure (HF) patients diagnosed between July 5, 2004 and December 31, 2010 that were part of the EPA CARES resource in conjunction with modeled source-specific fine particulate matter (PM2.5) to estimate the association between exposure to source and component apportioned PM2.5 at the time of HF diagnosis and 30-day readmissions. METHODS We used zero-inflated mixed effects Poisson models with a random intercept for zip code to model associations while adjusting for age at diagnosis, year of diagnosis, race, sex, smoking status, and neighborhood socioeconomic status. We undertook several sensitivity analyses to explore the impact of geocoding precision and other factors on associations and expressed associations per interquartile range increase in exposures. RESULTS We observed associations between 30-day readmissions and an interquartile range increase in gasoline- (16.9% increase; 95% confidence interval = 4.8%, 30.4%) and diesel-derived PM2.5 (9.9% increase; 95% confidence interval = 1.7%, 18.7%), and the secondary organic carbon component of PM2.5 (SOC; 20.4% increase; 95% confidence interval = 8.3%, 33.9%). Associations were stable in sensitivity analyses, and most consistently observed among Black study participants, those in lower income areas, and those diagnosed with HF at an earlier age. Concentration-response curves indicated a linear association for diesel and SOC. While there was some non-linearity in the gasoline concentration-response curve, only the linear component was associated with 30-day readmissions. DISCUSSION There appear to be source specific associations between PM2.5 and 30-day readmissions particularly for traffic-related sources, potentially indicating unique toxicity of some sources for readmission risks that should be further explored.
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Affiliation(s)
- Aleah Walsh
- Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, NC, USA; Oak Ridge Associated Universities, Oak Ridge, TN, USA
| | - Armistead G Russell
- School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Anne M Weaver
- Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, NC, USA
| | - Joshua Moyer
- Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, NC, USA
| | - Lauren Wyatt
- Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, NC, USA
| | - Cavin K Ward-Caviness
- Center for Public Health and Environmental Assessment, US Environmental Protection Agency, Chapel Hill, NC, USA.
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Klimkaite L, Liveikis T, Kaspute G, Armalyte J, Aldonyte R. Air pollution-associated shifts in the human airway microbiome and exposure-associated molecular events. Future Microbiol 2023; 18:607-623. [PMID: 37477532 DOI: 10.2217/fmb-2022-0258] [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: 07/22/2023] Open
Abstract
Publications addressing air pollution-induced human respiratory microbiome shifts are reviewed in this article. The healthy respiratory microbiota is characterized by a low density of bacteria, fungi and viruses with high diversity, and usually consists of Bacteroidetes, Firmicutes, Proteobacteria, Actinobacteria, Fusobacteria, viruses and fungi. The air's microbiome is highly dependent on air pollution levels and is directly reflected within the human respiratory microbiome. In addition, pollutants indirectly modify the local environment in human respiratory organs by reducing antioxidant capacity, misbalancing proteolysis and modulating inflammation, all of which regulate local microbiomes. Improving air quality leads to more diverse and healthy microbiomes of the local air and, subsequently, residents' airways.
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Affiliation(s)
| | | | - Greta Kaspute
- State Research Institute Center for Innovative Medicine, Vilnius, Lithuania
| | | | - Ruta Aldonyte
- State Research Institute Center for Innovative Medicine, Vilnius, Lithuania
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Mazumder MHH, Gandhi J, Majumder N, Wang L, Cumming RI, Stradtman S, Velayutham M, Hathaway QA, Shannahan J, Hu G, Nurkiewicz TR, Tighe RM, Kelley EE, Hussain S. Lung-gut axis of microbiome alterations following co-exposure to ultrafine carbon black and ozone. Part Fibre Toxicol 2023; 20:15. [PMID: 37085867 PMCID: PMC10122302 DOI: 10.1186/s12989-023-00528-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 04/17/2023] [Indexed: 04/23/2023] Open
Abstract
BACKGROUND Microbial dysbiosis is a potential mediator of air pollution-induced adverse outcomes. However, a systemic comparison of the lung and gut microbiome alterations and lung-gut axis following air pollution exposure is scant. In this study, we exposed male C57BL/6J mice to inhaled air, CB (10 mg/m3), O3 (2 ppm) or CB + O3 mixture for 3 h/day for either one day or four consecutive days and were euthanized 24 h post last exposure. The lung and gut microbiome were quantified by 16 s sequencing. RESULTS Multiple CB + O3 exposures induced an increase in the lung inflammatory cells (neutrophils, eosinophils and B lymphocytes), reduced absolute bacterial load in the lungs and increased load in the gut. CB + O3 exposure was more potent as it decreased lung microbiome alpha diversity just after a single exposure. CB + O3 co-exposure uniquely increased Clostridiaceae and Prevotellaceae in the lungs. Serum short chain fatty acids (SCFA) (acetate and propionate) were increased significantly only after CB + O3 co-exposure. A significant increase in SCFA producing bacterial families (Ruminococcaceae, Lachnospiraceae, and Eubacterium) were also observed in the gut after multiple exposures. Co-exposure induced significant alterations in the gut derived metabolite receptors/mediator (Gcg, Glp-1r, Cck) mRNA expression. Oxidative stress related mRNA expression in lungs, and oxidant levels in the BALF, serum and gut significantly increased after CB + O3 exposures. CONCLUSION Our study confirms distinct gut and lung microbiome alterations after CB + O3 inhalation co-exposure and indicate a potential homeostatic shift in the gut microbiome to counter deleterious impacts of environmental exposures on metabolic system.
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Affiliation(s)
- Md Habibul Hasan Mazumder
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Jasleen Gandhi
- Department of Microbiology, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Nairrita Majumder
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Lei Wang
- Department of Microbiology, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Robert Ian Cumming
- Department of Medicine, Duke University Medical Center, Durham, NC, 2927, USA
| | - Sydney Stradtman
- School of Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Murugesan Velayutham
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Department of Biochemistry and Molecular Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Quincy A Hathaway
- Heart and Vascular Institute, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Jonathan Shannahan
- School of Health Sciences, Purdue University, West Lafayette, IN, 47907, USA
| | - Gangqing Hu
- Department of Microbiology, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Timothy R Nurkiewicz
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Robert M Tighe
- Department of Medicine, Duke University Medical Center, Durham, NC, 2927, USA
| | - Eric E Kelley
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA
| | - Salik Hussain
- Department of Physiology, Pharmacology, and Toxicology, Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA.
- Center for Inhalation Toxicology (iTOX), School of Medicine, West Virginia University, Morgantown, WV, 26506, USA.
- Department of Microbiology, School of Medicine, West Virginia University, Morgantown, WV, 26506, USA.
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11
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Chen S, Li M, Zhang R, Ye L, Jiang Y, Jiang X, Peng H, Wang Z, Guo Z, Chen L, Zhang R, Niu Y, Aschner M, Li D, Chen W. Type 1 diabetes and diet-induced obesity predispose C57BL/6J mice to PM 2.5-induced lung injury: a comparative study. Part Fibre Toxicol 2023; 20:10. [PMID: 37069663 PMCID: PMC10108512 DOI: 10.1186/s12989-023-00526-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 04/11/2023] [Indexed: 04/19/2023] Open
Abstract
BACKGROUND Pre-existing metabolic diseases may predispose individuals to particulate matter (PM)-induced adverse health effects. However, the differences in susceptibility of various metabolic diseases to PM-induced lung injury and their underlying mechanisms have yet to be fully elucidated. RESULTS Type 1 diabetes (T1D) murine models were constructed by streptozotocin injection, while diet-induced obesity (DIO) models were generated by feeding 45% high-fat diet 6 weeks prior to and throughout the experiment. Mice were subjected to real-ambient PM exposure in Shijiazhuang City, China for 4 weeks at a mean PM2.5 concentration of 95.77 µg/m3. Lung and systemic injury were assessed, and the underlying mechanisms were explored through transcriptomics analysis. Compared with normal diet (ND)-fed mice, T1D mice exhibited severe hyperglycemia with a blood glucose of 350 mg/dL, while DIO mice displayed moderate obesity and marked dyslipidemia with a slightly elevated blood glucose of 180 mg/dL. T1D and DIO mice were susceptible to PM-induced lung injury, manifested by inflammatory changes such as interstitial neutrophil infiltration and alveolar septal thickening. Notably, the acute lung injury scores of T1D and DIO mice were higher by 79.57% and 48.47%, respectively, than that of ND-fed mice. Lung transcriptome analysis revealed that increased susceptibility to PM exposure was associated with perturbations in multiple pathways including glucose and lipid metabolism, inflammatory responses, oxidative stress, cellular senescence, and tissue remodeling. Functional experiments confirmed that changes in biomarkers of macrophage (F4/80), lipid peroxidation (4-HNE), cellular senescence (SA-β-gal), and airway repair (CCSP) were most pronounced in the lungs of PM-exposed T1D mice. Furthermore, pathways associated with xenobiotic metabolism showed metabolic state- and tissue-specific perturbation patterns. Upon PM exposure, activation of nuclear receptor (NR) pathways and inhibition of the glutathione (GSH)-mediated detoxification pathway were evident in the lungs of T1D mice, and a significant upregulation of NR pathways was present in the livers of T1D mice. CONCLUSIONS These differences might contribute to differential susceptibility to PM exposure between T1D and DIO mice. These findings provide new insights into the health risk assessment of PM exposure in populations with metabolic diseases.
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Affiliation(s)
- Shen Chen
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Miao Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Rui Zhang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Lizhu Ye
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Yue Jiang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Xinhang Jiang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Hui Peng
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Ziwei Wang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Zhanyu Guo
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Liping Chen
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Rong Zhang
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Yujie Niu
- Department of Toxicology, School of Public Health, Hebei Medical University, Shijiazhuang, 050017, China
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, Forchheimer 209, 1300 Morris Park Avenue, Bronx, NY, 10461, USA
| | - Daochuan Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China
| | - Wen Chen
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Toxicology, School of Public Health, Sun Yat-sen University, Guangzhou, 510080, China.
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12
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Panumasvivat J, Pratchayasakul W, Sapbamrer R, Chattipakorn N, Chattipakorn SC. The possible role of particulate matter on the respiratory microbiome: evidence from in vivo to clinical studies. Arch Toxicol 2023; 97:913-930. [PMID: 36781433 DOI: 10.1007/s00204-023-03452-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 02/02/2023] [Indexed: 02/15/2023]
Abstract
Environmental pollution, which contains ambient particulate matter, has been shown to have a significant impact on human health and longevity over the past 30 years. Recent studies clearly showed that exposure to particulate matter directly caused adverse effects on the respiratory system via various mechanisms including the accumulation of free radical peroxidation, the imbalance of intercellular calcium regulation, and inflammation, resulting in respiratory diseases. Recent evidence showed the importance of the role of the respiratory microbiome on lung immunity and lung development. In addition, previous studies have confirmed that several chronic respiratory diseases were associated with an alteration in the respiratory microbiome. However, there is still a lack of knowledge with regard to the changes in the respiratory microbiome with regard to the role of particulate matter exposure in respiratory diseases. Therefore, this review aims to summarize and discuss all the in vivo to clinical evidence which investigated the effect of particulate matter exposure on the respiratory microbiome and respiratory diseases. Any contradictory findings are incorporated and discussed. A summary of all these pieces of evidence may offer an insight into a therapeutic approach for the respiratory diseases related to particulate matter exposure and respiratory microbiome.
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Affiliation(s)
- Jinjuta Panumasvivat
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Wasana Pratchayasakul
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Ratana Sapbamrer
- Department of Community Medicine, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Nipon Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand
- Cardiac Electrophysiology Unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand
| | - Siriporn C Chattipakorn
- Neurophysiology Unit, Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.
- Center of Excellence in Cardiac Electrophysiology, Chiang Mai University, Chiang Mai, 50200, Thailand.
- Department of Oral Biology and Diagnostic Sciences, Faculty of Dentistry, Chiang Mai University, Chiang Mai, 50200, Thailand.
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13
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Thyagarajan A, Rapp CM, Schneider L, Lund A, Travers JB, Sahu RP. Exposure to diesel exhaust particulates and desert sand dust generates microvesicle particles and platelet-activating factor agonists. Skin Res Technol 2023; 29:e13312. [PMID: 37113092 PMCID: PMC10234165 DOI: 10.1111/srt.13312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 03/13/2023] [Indexed: 04/29/2023]
Affiliation(s)
- Anita Thyagarajan
- Department of Pharmacology and ToxicologyBoonshoft School of Medicine Wright State UniversityDaytonOhioUSA
| | - Christine M. Rapp
- Department of Pharmacology and ToxicologyBoonshoft School of Medicine Wright State UniversityDaytonOhioUSA
| | | | - Amie Lund
- Department of Biological Sciences Environmental ToxicologyUniversity of North TexasDentonTexasUSA
| | - Jeffrey B. Travers
- Department of Pharmacology and ToxicologyBoonshoft School of Medicine Wright State UniversityDaytonOhioUSA
- Department of DermatologyBoonshoft School of Medicine Wright State UniversityDaytonOhioUSA
- Department of MedicineDayton Veterans Administration Medical CenterDaytonOhioUSA
| | - Ravi P. Sahu
- Department of Pharmacology and ToxicologyBoonshoft School of Medicine Wright State UniversityDaytonOhioUSA
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14
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Bosch AJT, Rohm TV, AlAsfoor S, Low AJY, Keller L, Baumann Z, Parayil N, Stawiski M, Rachid L, Dervos T, Mitrovic S, Meier DT, Cavelti-Weder C. Lung versus gut exposure to air pollution particles differentially affect metabolic health in mice. Part Fibre Toxicol 2023; 20:7. [PMID: 36895000 PMCID: PMC9996885 DOI: 10.1186/s12989-023-00518-w] [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: 01/05/2023] [Accepted: 02/14/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Air pollution has emerged as an unexpected risk factor for diabetes. However, the mechanism behind remains ill-defined. So far, the lung has been considered as the main target organ of air pollution. In contrast, the gut has received little scientific attention. Since air pollution particles can reach the gut after mucociliary clearance from the lungs and through contaminated food, our aim was to assess whether exposure deposition of air pollution particles in the lung or the gut drive metabolic dysfunction in mice. METHODS To study the effects of gut versus lung exposure, we exposed mice on standard diet to diesel exhaust particles (DEP; NIST 1650b), particulate matter (PM; NIST 1649b) or phosphate-buffered saline by either intratracheal instillation (30 µg 2 days/week) or gavage (12 µg 5 days/week) over at least 3 months (total dose of 60 µg/week for both administration routes, equivalent to a daily inhalation exposure in humans of 160 µg/m3 PM2.5) and monitored metabolic parameters and tissue changes. Additionally, we tested the impact of the exposure route in a "prestressed" condition (high-fat diet (HFD) and streptozotocin (STZ)). RESULTS Mice on standard diet exposed to particulate air pollutants by intratracheal instillation developed lung inflammation. While both lung and gut exposure resulted in increased liver lipids, glucose intolerance and impaired insulin secretion was only observed in mice exposed to particles by gavage. Gavage with DEP created an inflammatory milieu in the gut as shown by up-regulated gene expression of pro-inflammatory cytokines and monocyte/macrophage markers. In contrast, liver and adipose inflammation markers were not increased. Beta-cell secretory capacity was impaired on a functional level, most likely induced by the inflammatory milieu in the gut, and not due to beta-cell loss. The differential metabolic effects of lung and gut exposures were confirmed in a "prestressed" HFD/STZ model. CONCLUSIONS We conclude that separate lung and gut exposures to air pollution particles lead to distinct metabolic outcomes in mice. Both exposure routes elevate liver lipids, while gut exposure to particulate air pollutants specifically impairs beta-cell secretory capacity, potentially instigated by an inflammatory milieu in the gut.
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Affiliation(s)
- Angela J T Bosch
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Theresa V Rohm
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Shefaa AlAsfoor
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Andy J Y Low
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Lena Keller
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Zora Baumann
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Neena Parayil
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Marc Stawiski
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Leila Rachid
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Thomas Dervos
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Sandra Mitrovic
- Department of Laboratory Medicine, University Hospital Basel, 4031, Basel, Switzerland
| | - Daniel T Meier
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland
| | - Claudia Cavelti-Weder
- Department of Biomedicine, University of Basel, 4031, Basel, Switzerland. .,Clinic of Endocrinology, Diabetes and Metabolism, University Hospital Basel, 4031, Basel, Switzerland. .,Department of Endocrinology, Diabetology and Clinical Nutrition, University Hospital Zurich (USZ) and University of Zurich (UZH), Rämistrasse 100, 8009, Zurich, Switzerland.
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15
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Wang Q, Liu S. The Effects and Pathogenesis of PM2.5 and Its Components on Chronic Obstructive Pulmonary Disease. Int J Chron Obstruct Pulmon Dis 2023; 18:493-506. [PMID: 37056681 PMCID: PMC10086390 DOI: 10.2147/copd.s402122] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/27/2023] [Indexed: 04/15/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD), a heterogeneous disease, is the leading cause of death worldwide. In recent years, air pollution, especially particulate matter (PM), has been widely studied as a contributing factor to COPD. As an essential component of PM, PM2.5 is associated with COPD prevalence, morbidity, and acute exacerbations. However, the specific pathogenic mechanisms were still unclear and deserve further research. The diversity and complexity of PM2.5 components make it challenging to get its accurate effects and mechanisms for COPD. It has been determined that the most toxic PM2.5 components are metals, polycyclic aromatic hydrocarbons (PAHs), carbonaceous particles (CPs), and other organic compounds. PM2.5-induced cytokine release and oxidative stress are the main mechanisms reported leading to COPD. Nonnegligibly, the microorganism in PM 2.5 may directly cause mononuclear inflammation or break the microorganism balance contributing to the development and exacerbation of COPD. This review focuses on the pathophysiology and consequences of PM2.5 and its components on COPD.
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Affiliation(s)
- Qi Wang
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, People’s Republic of China
| | - Sha Liu
- Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, Hengyang, Hunan, People’s Republic of China
- Correspondence: Sha Liu, Department of Pulmonary and Critical Care Medicine, The Second Affiliated Hospital, Hengyang Medical School, University of South China, 35 Jiefang Avenue, Zhengxiang District, Hengyang, Hunan, 421001, People’s Republic of China, Email
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16
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Translocation and Dissemination of Gut Bacteria after Severe Traumatic Brain Injury. Microorganisms 2022; 10:microorganisms10102082. [PMID: 36296362 PMCID: PMC9611479 DOI: 10.3390/microorganisms10102082] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 10/10/2022] [Accepted: 10/18/2022] [Indexed: 12/04/2022] Open
Abstract
Enterobacteriaceae are often found in the lungs of patients with severe Traumatic Brain Injury (sTBI). However, it is unknown whether these bacteria come from the gut microbiota. To investigate this hypothesis, the mice model of sTBI was used in this study. After sTBI, Chao1 and Simpson index peaking at 7 d in the lungs (p < 0.05). The relative abundance of Acinetobacter in the lungs increased to 16.26% at 7 d after sTBI. The chao1 index of gut microbiota increased after sTBI and peaked at 7 d (p < 0.05). Three hours after sTBI, the conditional pathogens such as Lachnoclostridium, Acinetobacter, Bacteroides and Streptococcus grew significantly. At 7 d and 14 d, the histology scores in the sTBI group were significantly higher than the control group (p < 0.05). The myeloperoxidase (MPO) activity increased at all-time points after sTBI and peaked at 7 d (p < 0.05). The LBP and sCD14 peaking 7 d after sTBI (p < 0.05). The Zonulin increased significantly at 3 d after sTBI and maintained the high level (p < 0.05). SourceTracker identified that the lung tissue microbiota reflects 49.69% gut source at 7 d after sTBI. In the small intestine, sTBI induced gastrointestinal dysfunction with increased apoptosis and decreasing antimicrobial peptides. There was a negative correlation between gut conditional pathogens and the expression level of antimicrobial peptides in Paneth cells. Our data indicate that gut bacteria translocated to the lungs after sTBI, and Paneth cells may regulate gut microbiota stability and translocation.
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17
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Wang S, Zhou Q, Tian Y, Hu X. The Lung Microbiota Affects Pulmonary Inflammation and Oxidative Stress Induced by PM 2.5 Exposure. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:12368-12379. [PMID: 35984995 DOI: 10.1021/acs.est.1c08888] [Citation(s) in RCA: 25] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Fine particulate matter (PM2.5) exposure causes respiratory diseases by inducing inflammation and oxidative stress. However, the correlation between the pulmonary microbiota and the progression of pulmonary inflammation and oxidative stress caused by PM2.5 is poorly understood. This study tested the hypothesis that the lung microbiota affects pulmonary inflammation and oxidative stress induced by PM2.5 exposure. Mice were exposed to PM2.5 intranasally for 12 days. Then, pulmonary microbiota transfer and antibiotic intervention were performed. Histological examinations, biomarker index detection, and transcriptome analyses were conducted. Characterization of the pulmonary microbiota using 16S rRNA gene sequencing showed that its diversity decreased by 75.2% in PM2.5-exposed mice, with increased abundance of Proteobacteria and decreased abundance of Bacteroidota. The altered composition of the microbiota was significantly correlated with pulmonary inflammation and oxidative stress-related indicators. Intranasal transfer of the pulmonary microbiota from PM2.5-exposed mice affected pulmonary inflammation and oxidative stress caused by PM2.5, as shown by increased proinflammatory cytokine levels and dysregulated oxidative damage-related biomarkers. Antibiotic intervention during PM2.5 exposure alleviated pulmonary inflammation and oxidative damage in mice. The pulmonary microbiota also showed substantial changes after antibiotic treatment, as reflected by the increased microbiota diversity, decreased abundance of Proteobacteria and increased abundance of Bacteroidota. These results suggest that pulmonary microbial dysbiosis can promote and affect pulmonary inflammation and oxidative stress during PM2.5 exposure.
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Affiliation(s)
- Simin Wang
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Qixing Zhou
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Yingze Tian
- State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
| | - Xiangang Hu
- Key Laboratory of Pollution Processes and Environmental Criteria (Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300350, China
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18
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Jia Q, Li Q, Wang Y, Zhao J, Jiang Q, Wang H, Xue W, Zhu Z, Tian L. Lung microbiome and transcriptome reveal mechanisms underlying PM 2.5 induced pulmonary fibrosis. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 831:154974. [PMID: 35378184 DOI: 10.1016/j.scitotenv.2022.154974] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 03/21/2022] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Airborne fine particulate matter (PM2.5) is considered to be a risk factor for lung fibrosis, and therefore, it has attracted public attention due to its various physicochemical features and its adverse effects on health. However, little remains to be known regarding the mechanism of PM2.5-induced pulmonary fibrosis. The lung microbiota may be a potential factor involved in the adverse outcomes of pulmonary fibrosis. Meanwhile, miRNAs are thought to be key regulators that participate in the complex interplay between the host and the microbiota. Hence, to investigate the potential mechanisms of pulmonary fibrosis, and to explore the impact of PM2.5-induced alterations in miRNAs and the lung microbiota and possible interaction patterns in mice models, we took advantage of 16S rDNA gene sequencing, miRNAs sequencing (miRNAs-Seq), and mining of public databases profiling. The results of 16S rDNA analysis showed that PM2.5 interfered with the microbial community composition, resulting in Proteobacteria becoming an additional dominant phylum. In addition, differentially expressed miRNAs were enriched in HIF-1 signaling, the IL-17 signaling, as well as Th17 cell differentiation pathways, which are closely related to microbial functional pathways. Significantly, a target miRNA, miR-149-5p, may be a key factor triggering the MAPK signal pathway related to pulmonary fibrosis and disturbing the homeostasis of lung bacterial flora. These results indicate that PM2.5 may lead to interaction between lung microbiota dysbiosis and an imbalance of miRNA levels to form a vicious cycle that promotes lung fibrogenesis. The current study provides new insights into the progression of pulmonary fibrosis.
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Affiliation(s)
- Qiyue Jia
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiuyue Li
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Yan Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Jing Zhao
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Qiyue Jiang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Hongwei Wang
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Wenming Xue
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China
| | - Zhonghui Zhu
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
| | - Lin Tian
- Department of Occupational and Environmental Health, School of Public Health, Capital Medical University, Beijing 100069, China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing 100069, China.
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19
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Chen C, Yang T, Wang C. The Dietary Inflammatory Index and Early COPD: Results from the National Health and Nutrition Examination Survey. Nutrients 2022; 14:2841. [PMID: 35889798 PMCID: PMC9320619 DOI: 10.3390/nu14142841] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 07/04/2022] [Accepted: 07/05/2022] [Indexed: 12/13/2022] Open
Abstract
We examined 3962 people aged 20 to 49 years who had information on spirometry testing and underwent a 24 h dietary recall interview from the 2007-2012 National Health and Nutrition Examination Survey (NHANES) and used multivariable logistic regression to evaluate associations between Dietary Inflammatory Index (DII, a pro-inflammatory diet) and early COPD and lung function. The overall prevalence of early COPD was 5.05%. Higher DII was associated with increased odds of early COPD (quartile 4 vs. 1, the OR = 1.657, 95% CI = 1.100-2.496, p = 0.0156). In a full-adjusted model, each unit of increase in DII score was associated with a 90.3% increase in the risk of early COPD. Higher DII is significantly associated with lower FEV1 and FVC among individuals with early COPD, each unit increment in the DII was significantly associated with 0.43 L-0.58 L decrements in FEV1 (β = -0.43, 95% CI = -0.74, -0.12) and FVC (β = -0.58, 95% CI = -1.01, -0.16). These findings demonstrate that higher consumption of a pro-inflammatory diet may contribute to an increased risk of early COPD and lower lung function, and further support dietary interventions as part of a healthy lifestyle in order to preserve lung function and prevent or improve COPD.
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Affiliation(s)
- Chen Chen
- Beijing University of Chinese Medicine, Beijing 100029, China;
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Ting Yang
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
| | - Chen Wang
- Department of Pulmonary and Critical Care Medicine, Center of Respiratory Medicine, China-Japan Friendship Hospital, Beijing 100029, China
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20
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Olumegbon LT, Lawal AO, Oluyede DM, Adebimpe MO, Elekofehinti OO, I Umar H. Hesperetin protects against diesel exhaust particles-induced cardiovascular oxidative stress and inflammation in Wistar rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:52574-52589. [PMID: 35262885 DOI: 10.1007/s11356-022-19494-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
Air particulate matter exposure has been linked to cardiovascular and atherosclerosis as a result of increase oxidative stress and inflammatory response. This study aims to determine the effect of the use of hesperetin (HESP) as a therapeutic agent to mitigate the cardiovascular oxidative and pro-inflammatory effects of diesel exhaust particles in Wistar rats. DEP was collected from an Iveco cargo engine truck, and n-hexane fraction (hDEP) was obtained. Forty Wistar strains of male albino rats (6 weeks) were divided into 8 groups: control group received DMSO and CMC-Na; other groups received either n-hexane extract of DEP (0.064 or 0.640 mg/kg hDEP) or Standard Reference Material 2975 (0.064 mg/kg hSRM) in the presence or absence of 200 mg/kg HESP. Extracts were administered orally. Serum lipids, lipid peroxidation (LPO), conjugated dienes (CDs), and GSH levels were determined. Also, inflammatory cytokines, PCSK-9, LDL-receptor, and antioxidant genes expression were assessed by RT-PCR in both the heart and aorta. The molecular interaction of targeted proteins with HESP was assessed by the in silico approach. Extracts of DEP caused a significant (p < 0.001) increase in serum lipids but significantly decreased HDL-CHOL. It also increased CDs and MDA levels but decreased GSH levels. In addition, the particulate extracts caused a significant (p < 0.001) increase in pro-inflammatory genes expression in the heart and aorta but significantly decreased IL-10 and LDL-R gene expressions. Pre-treatment with hesperetin significantly reversed all these effects. This study shows that hesperetin has the ability to protect against DEP-induced oxidative stress and inflammation in the cardiovascular system.
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Affiliation(s)
- Lateefat T Olumegbon
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria.
| | - Akeem O Lawal
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria
| | - Dare M Oluyede
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria
| | - Monsurat O Adebimpe
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria
| | - Olusola O Elekofehinti
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria
| | - Haruna I Umar
- Bioinformatics and Molecular Biology Unit, Department of Biochemistry, School of Sciences, Federal University of Technology, Akure, P.M.B. 704, Akure, Ondo-State, Nigeria
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21
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Jia Y, He T, Wu D, Tong J, Zhu J, Li Z, Dong J. The treatment of Qibai Pingfei Capsule on chronic obstructive pulmonary disease may be mediated by Th17/Treg balance and gut-lung axis microbiota. Lab Invest 2022; 20:281. [PMID: 35729584 PMCID: PMC9210581 DOI: 10.1186/s12967-022-03481-w] [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: 03/15/2022] [Accepted: 06/11/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND Chronic obstructive pulmonary disease (COPD), a prevalent, progressive respiratory disease, has become the third leading cause of death globally. Increasing evidence suggests that intestinal and pulmonary microbiota dysbiosis is associated with COPD. Researchers have shown that T helper (Th) 17/regulatory T (Treg) imbalance is involved in COPD. Qibai Pingfei Capsule (QBPF) is a traditional Chinese medicine used to treat COPD clinically in China. However, the effects of QBPF intervention on the Th17/Treg balance and microbiota in the gut and lung are still poorly understood. METHODS This study divided the rats into three groups (n = 8): control, model, and QBPF group. After establishing the model of COPD for four weeks and administering of QBPF for two weeks, Th17 cells, Treg cells, their associated cytokines, transcription factors, and intestinal and pulmonary microbiota of rats were analyzed. Furthermore, the correlations between intestinal and pulmonary microbiota and between bacterial genera and pulmonary function and immune function were measured. RESULTS The results revealed that QBPF could improve pulmonary function and contribute to the new balance of Th17/Treg in COPD rats. Meanwhile, QBPF treatment could regulate the composition of intestinal and pulmonary microbiota and improve community structure in COPD rats, suppressing the relative abundance of Coprococcus_2, Prevotella_9, and Blautia in the gut and Mycoplasma in the lung, but accumulating the relative abundance of Prevotellaceae_UCG_003 in the gut and Rikenellaceae_RC9_gut_group in the lung. Additionally, gut-lung axis was confirmed by the significant correlations between the intestinal and pulmonary microbiota. Functional analysis of microbiota showed amino acid metabolism was altered in COPD rats in the gut and lung. Spearman correlation analysis further enriched the relationship between the microbiota in the gut and lung and pulmonary function and immune function in COPD model rats. CONCLUSIONS Our study indicated that the therapeutic effects of QBPF may be achieved by maintaining the immune cell balance and regulating the gut-lung axis microbiota, providing references to explore the potential biomarkers of COPD and the possible mechanism of QBPF to treat COPD.
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Affiliation(s)
- Yu Jia
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No.1, Qianjiang Road, Hefei, Anhui, China
| | - Tiantian He
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No.1, Qianjiang Road, Hefei, Anhui, China
| | - Di Wu
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei, Anhui, China
| | - Jiabing Tong
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei, Anhui, China.,Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Meishan Road, Hefei, Anhui, China
| | - Jie Zhu
- College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, No.1, Qianjiang Road, Hefei, Anhui, China. .,Institutes of Integrative Medicine, Fudan University, Shanghai, China. .,Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei, Anhui, China.
| | - Zegeng Li
- Institute of Traditional Chinese Medicine Prevention and Control on Respiratory Disease, Anhui Academy of Chinese Medicine, No. 117, Meishan Road, Hefei, Anhui, China. .,Department of Respiratory Medicine, First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Meishan Road, Hefei, Anhui, China.
| | - Jingcheng Dong
- Institutes of Integrative Medicine, Fudan University, Shanghai, China.
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22
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Particulate matter in COPD pathogenesis: an overview. Inflamm Res 2022; 71:797-815. [PMID: 35710643 DOI: 10.1007/s00011-022-01594-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Revised: 05/23/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a progressive lung disorder with substantial patient burden and leading cause of death globally. Cigarette smoke remains to be the most recognised causative factor behind COPD pathogenesis. Given the alarming increase in prevalence of COPD amongst non-smokers in recent past, a potential role of air pollution particularly particulate matter (PM) in COPD development has gained much attention of the scientists. Indeed, several epidemiological studies indicate strong correlation between airborne PM and COPD incidence/exacerbations. PM-induced oxidative stress seems to be the major player in orchestrating COPD inflammatory cycle but the exact molecular mechanism(s) behind such a process are still poorly understood. This may be due to the complexity of multiple molecular pathways involved. Oxidative stress-linked mitochondrial dysfunction and autophagy have also gained importance and have been the focus of recent studies regarding COPD pathogenesis. Accordingly, the present review is aimed at understanding the key molecular players behind PM-mediated COPD pathogenesis through analysis of various experimental studies supported by epidemiological data to identify relevant preventive/therapeutic targets in the area.
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23
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Phillippi DT, Daniel S, Nguyen KN, Penaredondo BA, Lund AK. Probiotics Function as Immunomodulators in the Intestine in C57Bl/6 Male Mice Exposed to Inhaled Diesel Exhaust Particles on a High-Fat Diet. Cells 2022; 11:cells11091445. [PMID: 35563751 PMCID: PMC9101602 DOI: 10.3390/cells11091445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/10/2022] [Accepted: 04/20/2022] [Indexed: 12/04/2022] Open
Abstract
Epidemiological studies reveal a correlation between air pollution exposure and gastrointestinal (GI) diseases, yet few studies have investigated the role of inhaled particulate matter on intestinal integrity in conjunction with a high-fat (HF) diet. Additionally, there is currently limited information on probiotics in mitigating air-pollutant responses in the intestines. Thus, we investigated the hypothesis that exposure to inhaled diesel exhaust particles (DEP) and a HF diet can alter intestinal integrity and inflammation, which can be attenuated with probiotics. 4-6-w-old male C57Bl/6 mice on a HF diet (45% kcal fat) were randomly assigned to be exposed via oropharyngeal aspiration to 35 µg of DEP suspended in 35 µL of 0.9% sterile saline or sterile saline (CON) only twice a week for 4 w. A subset of mice was treated with 0.3 g/day of Winclove Ecologic® barrier probiotics (PRO) in drinking water throughout the duration of the study. Our results show that DEP exposure ± probiotics resulted in increased goblet cells and mucin (MUC)-2 expression, as determined by AB/PAS staining. Immunofluorescent quantification and/or RT-qPCR showed that DEP exposure increases claudin-3, occludin, zona occludens (ZO)-1, matrix metalloproteinase (MMP)-9, and toll-like receptor (TLR)-4, and decreases tumor necrosis factor (TNF)-α and interleukin (IL)-10 expression compared to CON. DEP exposure + probiotics increases expression of claudin-3, occludin, ZO-1, TNF-α, and IL-10 and decreases MMP-9 and TLR-4 compared to CON + PRO in the small intestine. Collectively, these results show that DEP exposure alters intestinal integrity and inflammation in conjunction with a HF diet. Probiotics proved fundamental in understanding the role of the microbiome in protecting and altering inflammatory responses in the intestines following exposure to inhaled DEP.
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Affiliation(s)
| | | | | | | | - Amie K. Lund
- Correspondence: ; Tel.: +1-(940)-369-8946; Fax: +1-(940)-565-4297
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24
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Lenssen ES, Pieters RHH, Nijmeijer SM, Oldenwening M, Meliefste K, Hoek G. Short-term associations between barbecue fumes and respiratory health in young adults. ENVIRONMENTAL RESEARCH 2022; 204:111868. [PMID: 34453901 DOI: 10.1016/j.envres.2021.111868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Revised: 08/05/2021] [Accepted: 08/07/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Epidemiological studies have associated biomass combustion with (respiratory) morbidity and mortality, primarily in indoor settings. Barbecuing results in high outdoor air pollution exposures, but the health effects are unknown. OBJECTIVE The objective was to investigate short-term changes in respiratory health in healthy adults, associated with exposure to barbecue fumes. METHODS 16 healthy, adult volunteers were exposed to barbecue smoke in outdoor air in rest during 1.5 h, using a repeated-measures design. Major air pollutants were monitored on-site, including particulate matter <2.5 μm (PM2.5), particle number concentrations (PNC) and black- and brown carbon. At the same place and time-of-day, subjects participated in a control session, during which they were not exposed to barbecue smoke. Before and immediately after all sessions lung function was measured. Before, immediately after, 4- and 18 h post-sessions nasal expression levels of interleukin (IL)-8, IL6 and Tumor Necrosis Factor alpha (TNFα) were determined in nasal swabs, using quantitative polymerase chain reaction. Associations between major air pollutants, lung function and inflammatory markers were assessed using mixed linear regression models. RESULTS High PM2.5 levels and PNCs were observed during barbecue sessions, with averages ranging from 553 to 1062 μg/m3 and 109,000-463,000 pt/cm3, respectively. Average black- and brown carbon levels ranged between 4.1-13.0 and 5.0-16.2 μg/m3. A 1000 μg/m3 increase in PM2.5 was associated with 2.37 (0.97, 4.67) and 2.21 (0.98, 5.00) times higher expression of IL8, immediately- and 18 h after exposure. No associations were found between air pollutants and lung function, or the expression of IL6 or TNFα. DISCUSSION Short-term exposure to air pollutants emitted from barbecuing was associated with a mild respiratory response in healthy young adults, including prolonged increase in nasal IL8 without a change in lung function and other measured inflammatory markers. The results might indicate prolonged respiratory inflammation, due to short-term exposure to barbecue fumes.
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Affiliation(s)
- Esther S Lenssen
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
| | - Raymond H H Pieters
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
| | - Sandra M Nijmeijer
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
| | - Marieke Oldenwening
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
| | - Kees Meliefste
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
| | - Gerard Hoek
- Institute for Risk Assessment Sciences (IRAS), Utrecht University, Utrecht, the Netherlands.
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25
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Phillippi DT, Daniel S, Pusadkar V, Youngblood VL, Nguyen KN, Azad RK, McFarlin BK, Lund AK. Inhaled diesel exhaust particles result in microbiome-related systemic inflammation and altered cardiovascular disease biomarkers in C57Bl/6 male mice. Part Fibre Toxicol 2022; 19:10. [PMID: 35135577 PMCID: PMC8827295 DOI: 10.1186/s12989-022-00452-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 01/31/2022] [Indexed: 12/13/2022] Open
Abstract
Background The gut microbiota plays a vital role in host homeostasis and is associated with inflammation and cardiovascular disease (CVD) risk. Exposure to particulate matter (PM) is a known mediator of inflammation and CVD and is reported to promote dysbiosis and decreased intestinal integrity. However, the role of inhaled traffic-generated PM on the gut microbiome and its corresponding systemic effects are not well-characterized. Thus, we investigated the hypothesis that exposure to inhaled diesel exhaust particles (DEP) alters the gut microbiome and promotes microbial-related inflammation and CVD biomarkers. 4–6-week-old male C57Bl/6 mice on either a low-fat (LF, 10% fat) or high-fat (HF, 45% fat) diet were exposed via oropharyngeal aspiration to 35 μg DEP suspended in 35 μl saline or saline only (CON) 2x/week for 30 days. To determine whether probiotics could prevent diet or DEP exposure mediated alterations in the gut microbiome or systemic outcomes, a subset of animals on the HF diet were treated orally with 0.3 g/day (~ 7.5 × 108 CFU/day) of Winclove Ecologic® Barrier probiotics throughout the study. Results Our results show that inhaled DEP exposure alters gut microbial profiles, including reducing Actinobacteria and expanding Verrucomicrobia and Proteobacteria. We observed increased circulating LPS, altered circulating cytokines (IL-1α, IL-3, IL-13, IL-15, G-CSF, LIF, MIP-2, and TNF-α), and CVD biomarkers (siCAM, PAI-1, sP-Selectin, thrombomodulin, and PECAM) in DEP-exposed and/or HF diet mice. Furthermore, probiotics attenuated the observed reduction of Actinobacteria and expansion of Proteobacteria in DEP-exposed and HF-diet mice. Probiotics mitigated circulating cytokines (IL-3, IL-13, G-CSF, RANTES, and TNF- α) and CVD biomarkers (siCAM, PAI-1, sP-Selectin, thrombomodulin, and PECAM) in respect to DEP-exposure and/or HF diet. Conclusion Key findings of this study are that inhaled DEP exposure alters small intestinal microbial profiles that play a role in systemic inflammation and early CVD biomarkers. Probiotic treatment in this study was fundamental in understanding the role of inhaled DEP on the microbiome and related systemic inflammatory and CVD biomarkers. Supplementary Information The online version contains supplementary material available at 10.1186/s12989-022-00452-3.
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Affiliation(s)
- Danielle T Phillippi
- Department of Biological Sciences, Advanced Environmental Research Institute, University of North Texas, EESAT - 215, 1704 W. Mulberry, Denton, TX, 76203, USA
| | - Sarah Daniel
- Department of Biological Sciences, Advanced Environmental Research Institute, University of North Texas, EESAT - 215, 1704 W. Mulberry, Denton, TX, 76203, USA
| | - Vaidehi Pusadkar
- BioDiscovery Institute, Department of Biological Sciences, University of North Texas, Denton, TX, 76203, USA
| | - Victoria L Youngblood
- Department of Biological Sciences, Advanced Environmental Research Institute, University of North Texas, EESAT - 215, 1704 W. Mulberry, Denton, TX, 76203, USA
| | - Kayla N Nguyen
- Department of Biological Sciences, Advanced Environmental Research Institute, University of North Texas, EESAT - 215, 1704 W. Mulberry, Denton, TX, 76203, USA
| | - Rajeev K Azad
- BioDiscovery Institute, Department of Biological Sciences, University of North Texas, Denton, TX, 76203, USA.,Department of Mathematics, University of North Texas, Denton, TX, 76203, USA
| | - Brian K McFarlin
- Department of Biological Sciences, University of North Texas, Denton, TX, 76203, USA.,UNT Applied Physiology Laboratory, University of North Texas, Denton, TX, 76203, USA
| | - Amie K Lund
- Department of Biological Sciences, Advanced Environmental Research Institute, University of North Texas, EESAT - 215, 1704 W. Mulberry, Denton, TX, 76203, USA.
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26
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Ding K, Chen J, Zhan W, Zhang S, Chen Y, Long S, Lei M. Microbiome Links Cigarette Smoke-Induced Chronic Obstructive Pulmonary Disease and Dietary Fiber via the Gut-Lung Axis: A Narrative Review. COPD 2021; 19:10-17. [PMID: 34963421 DOI: 10.1080/15412555.2021.2019208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Existing comprehensive management strategies for COPD effectively relieve the symptoms of patients, delay the deterioration of lung function, and prevent the progression of COPD through various means and multidisciplinary interventions. However, there has been limited progress in therapies that address the underlying causes of COPD pathogenesis. Recent studies have identified specific changes in the gut and pulmonary microbiota in response to exposure to smoke that can cause or exacerbate CS-COPD by regulating the inflammatory immune response in the lungs through the gut-lung axis. As a convenient and controllable intervention, modifying the diet to include more dietary fiber can effectively improve the prognosis of CS-COPD. Gut microbiota ferment dietary fiber to produce short-chain fatty acids, which connect the microbial communities in the lung and gut mucosa across the gut-lung axis, playing an anti-inflammatory and immunosuppressive role in the lungs. Given that the effect of dietary fiber on gut microbiota was highly similar to that of quitting smoking on gut microbiota, we assume that microbiota might be a potential therapeutic target for dietary fiber to alleviate and prevent CS-COPD. This study examines the similarities between pulmonary and gut microbiota changes in the presence of smoking and dietary fiber. It also highlights the mechanism by which SCFAs link pulmonary and gut microbiota in CS-COPD and analyzes the anti-inflammatory and immunomodulatory effects of short-chain fatty acids on CS-COPD via the gut-lung axis.
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Affiliation(s)
- Kaixi Ding
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jieling Chen
- Department of Respiration, Shehong Hospital of Traditional Chinese Medicine, Shehong, China
| | - Wenling Zhan
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Shipeng Zhang
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Yi Chen
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Sipei Long
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Ming Lei
- Department of Geriatrics, Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
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27
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Gene expression profiles of two testicular somatic cell lines respond differently to 4-nitrophenol mediating vary reproductive toxicity. Toxicology 2021; 463:152991. [PMID: 34673133 DOI: 10.1016/j.tox.2021.152991] [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: 04/30/2021] [Revised: 10/04/2021] [Accepted: 10/13/2021] [Indexed: 11/20/2022]
Abstract
4-Nitrophenol (PNP) has been extensively used in manufacturing for several decades. Its toxic effects on the male reproductive system have been reported, but the underlying mechanisms remain unclear. In this study, we utilized two testicular somatic cell lines (TM3 and TM4 cells) to explore the possible toxic effects of PNP on the male reproductive system. The activity of the cells after exposure to different doses of PNP (0.01, 0.1, 1, 10 and 100 μM) was evaluated. PNP treatment at 10 μM significantly inhibited cell viability, and 10 μM PNP was thus selected for subsequent experiments. Although PNP (10 μM) inhibited cell proliferation, promoted cell apoptosis, and changed the cell cycle distribution and ultrastructure in both types of cells, these effects were more significant in the TM4 cells. In addition, an Agilent mouse mRNA array was used to identify the gene expression differences between the control and PNP (10 μM) exposed TM3 and TM4 cells. The microarray analysis identified 67 and 1372 differentially expressed genes mainly concentrated in endothelial cell morphogenesis and anatomical structure development in TM3 cells and associated with cardiovascular system development and circulatory system development in TM4 cells. Moreover, a pathway analysis revealed that PNP not only predominately affected meiotic recombination and meiosis in TM3 cells, but also influenced axon guidance and developmental biology in TM4 cells. These results suggest that TM3 and TM4 cells exhibit different responses to PNP, which might mediate different toxic mechanisms.
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28
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Li HY, Zhou DD, Gan RY, Huang SY, Zhao CN, Shang A, Xu XY, Li HB. Effects and Mechanisms of Probiotics, Prebiotics, Synbiotics, and Postbiotics on Metabolic Diseases Targeting Gut Microbiota: A Narrative Review. Nutrients 2021; 13:nu13093211. [PMID: 34579087 PMCID: PMC8470858 DOI: 10.3390/nu13093211] [Citation(s) in RCA: 100] [Impact Index Per Article: 33.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 08/30/2021] [Accepted: 09/10/2021] [Indexed: 12/11/2022] Open
Abstract
Metabolic diseases are serious threats to public health and related to gut microbiota. Probiotics, prebiotics, synbiotics, and postbiotics (PPSP) are powerful regulators of gut microbiota, thus possessing prospects for preventing metabolic diseases. Therefore, the effects and mechanisms of PPSP on metabolic diseases targeting gut microbiota are worth discussing and clarifying. Generally, PPSP benefit metabolic diseases management, especially obesity and type 2 diabetes mellitus. The underlying gut microbial-related mechanisms are mainly the modulation of gut microbiota composition, regulation of gut microbial metabolites, and improvement of intestinal barrier function. Moreover, clinical trials showed the benefits of PPSP on patients with metabolic diseases, while the clinical strategies for gestational diabetes mellitus, optimal formula of synbiotics and health benefits of postbiotics need further study. This review fully summarizes the relationship between probiotics, prebiotics, synbiotics, postbiotics, and metabolic diseases, presents promising results and the one in dispute, and especially attention is paid to illustrates potential mechanisms and clinical effects, which could contribute to the next research and development of PPSP.
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Affiliation(s)
- Hang-Yu Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
| | - Dan-Dan Zhou
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
| | - Ren-You Gan
- Research Center for Plants and Human Health, Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu 610213, China;
- Key Laboratory of Coarse Cereal Processing (Ministry of Agriculture and Rural Affairs), School of Food and Biological Engineering, Chengdu University, Chengdu 610106, China
| | - Si-Yu Huang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
| | - Cai-Ning Zhao
- Department of Clinical Oncology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong 999077, China;
| | - Ao Shang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong 999077, China
| | - Xiao-Yu Xu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
- School of Chinese Medicine, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong 999077, China
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, Department of Nutrition, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; (H.-Y.L.); (D.-D.Z.); (S.-Y.H.); (A.S.); (X.-Y.X.)
- Correspondence: ; Tel.: +86-20-8733-2391
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Abstract
Since the industrial revolution, air pollution has become a major problem causing several health problems involving the airways as well as the cardiovascular, reproductive, or neurological system. According to the WHO, about 3.6 million deaths every year are related to inhalation of polluted air, specifically due to pulmonary diseases. Polluted air first encounters the airways, which are a major human defense mechanism to reduce the risk of this aggressor. Air pollution consists of a mixture of potentially harmful compounds such as particulate matter, ozone, carbon monoxide, volatile organic compounds, and heavy metals, each having its own effects on the human body. In the last decades, a lot of research investigating the underlying risks and effects of air pollution and/or its specific compounds on the airways, has been performed, involving both in vivo and in vitro experiments. The goal of this review is to give an overview of the recent data on the effects of air pollution on healthy and diseased airways or models of airway disease, such as asthma or chronic obstructive pulmonary disease. Therefore, we focused on studies involving pollution and airway symptoms and/or damage both in mice and humans.
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