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Johnston RA, Pilkington AW, Atkins CL, Boots TE, Brown PL, Jackson WT, Spencer CY, Siddiqui SR, Haque IU. Inconsequential role for chemerin-like receptor 1 in the manifestation of ozone-induced lung pathophysiology in male mice. Physiol Rep 2024; 12:e16008. [PMID: 38631890 PMCID: PMC11023814 DOI: 10.14814/phy2.16008] [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: 02/22/2024] [Revised: 03/27/2024] [Accepted: 03/28/2024] [Indexed: 04/19/2024] Open
Abstract
We executed this study to determine if chemerin-like receptor 1 (CMKLR1), a Gi/o protein-coupled receptor expressed by leukocytes and non-leukocytes, contributes to the development of phenotypic features of non-atopic asthma, including airway hyperresponsiveness (AHR) to acetyl-β-methylcholine chloride, lung hyperpermeability, airway epithelial cell desquamation, and lung inflammation. Accordingly, we quantified sequelae of non-atopic asthma in wild-type mice and mice incapable of expressing CMKLR1 (CMKLR1-deficient mice) following cessation of acute inhalation exposure to either filtered room air (air) or ozone (O3), a criteria pollutant and non-atopic asthma stimulus. Following exposure to air, lung elastic recoil and airway responsiveness were greater while the quantity of adiponectin, a multi-functional adipocytokine, in bronchoalveolar lavage (BAL) fluid was lower in CMKLR1-deficient as compared to wild-type mice. Regardless of genotype, exposure to O3 caused AHR, lung hyperpermeability, airway epithelial cell desquamation, and lung inflammation. Nevertheless, except for minimal genotype-related effects on lung hyperpermeability and BAL adiponectin, we observed no other genotype-related differences following O3 exposure. In summary, we demonstrate that CMKLR1 limits the severity of innate airway responsiveness and lung elastic recoil but has a nominal effect on lung pathophysiology induced by acute exposure to O3.
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Affiliation(s)
- Richard A. Johnston
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and PreventionUnited States Department of Health and Human ServicesMorgantownWest VirginiaUSA
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of MedicineWest Virginia UniversityMorgantownWest VirginiaUSA
- Division of Critical Care Medicine, Department of PediatricsMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
- Department of Integrative Biology and PharmacologyMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Albert W. Pilkington
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and PreventionUnited States Department of Health and Human ServicesMorgantownWest VirginiaUSA
| | - Constance L. Atkins
- Division of Pulmonary Medicine, Department of PediatricsMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Theresa E. Boots
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and PreventionUnited States Department of Health and Human ServicesMorgantownWest VirginiaUSA
| | - Philip L. Brown
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and PreventionUnited States Department of Health and Human ServicesMorgantownWest VirginiaUSA
| | - William T. Jackson
- Division of Critical Care Medicine, Department of PediatricsMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Chantal Y. Spencer
- Section of Pediatric Pulmonology, Department of PediatricsBaylor College of MedicineHoustonTexasUSA
| | - Saad R. Siddiqui
- Division of Critical Care Medicine, Department of PediatricsMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
| | - Ikram U. Haque
- Division of Critical Care Medicine, Department of PediatricsMcGovern Medical School at the University of Texas Health Science Center at HoustonHoustonTexasUSA
- Division of Critical Care, Department of PediatricsSidra MedicineDohaQatar
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2
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Xu F, Wu Q, Yang Y, Zhang L, Yan Z, Li H, Li J, An Z, Wu H, Song J, Wu W. High temperature exacerbates ozone-induced airway inflammation: Implication of airway microbiota and metabolites. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 903:166795. [PMID: 37666337 DOI: 10.1016/j.scitotenv.2023.166795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 09/01/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
Short-term exposure to ozone (O3) has been associated with airway inflammation. Given that high temperature (HT) accelerates O3 production, it is of significance to determine whether co-exposure to HT exacerbates O3-induced airway inflammation. The aim of this study was to examine the possible promotive effect of HT on O3-induced airway inflammation and underlying mechanisms. Forty-eight C57BL/6 N male mice were randomly divided into four groups: filtered air (control), O3, HT, and HT + O3 (co-exposure) groups. Mice in control and O3 groups were exposed to filtered air or 1 ppm O3 at 24 °C, respectively, while mice in HT and co-exposure groups were exposed to filtered air or 1 ppm O3 at 36 °C, respectively. The exposure scenario for four groups was 4 h/d for 5 consecutive days. Bronchoalveolar lavage fluids (BALF) were collected 24 h after the last exposure and subjected to examinations of oxidative stress and inflammation biomarkers, 16S rRNA sequencing, and metabolic profiling. Lung tissues were processed for H&E histological staining. The results showed that O3 inhalation triggered oxidative stress and inflammation in the airways, which was worsen by co-exposure to HT. Further studies revealed that co-exposure to HT strengthened O3-induced decline in Firmicutes and Allobaculum in airways. Moreover, co-exposure to HT promoted O3-induced airway metabolic disorder. Spearman correlation analysis revealed correlations among microbiota dysbiosis, metabolic disorder, oxidative stress and inflammation induced by co-exposure to HT and O3. Taken together, HT exposure aggravates O3-induced airway oxidative stress and inflammation, possibly through modulation of microbiota and metabolism of the airways.
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Affiliation(s)
- Fei Xu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Qiong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Yishu Yang
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Ling Zhang
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Zhen Yan
- International School of Public Health and One Health, Hainan Medical University, Haikou, China
| | - Huijun Li
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Juan Li
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Zhen An
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Hui Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Jie Song
- School of Public Health, Xinxiang Medical University, Xinxiang, China
| | - Weidong Wu
- School of Public Health, Xinxiang Medical University, Xinxiang, China.
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3
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Singh S A, Suresh S, Vellapandian C. Ozone-induced neurotoxicity: In vitro and in vivo evidence. Ageing Res Rev 2023; 91:102045. [PMID: 37652313 DOI: 10.1016/j.arr.2023.102045] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Accepted: 08/27/2023] [Indexed: 09/02/2023]
Abstract
Together with cities in higher-income nations, it is anticipated that the real global ozone is rising in densely populated areas of Asia and Africa. This review aims to discuss the possible neurotoxic pollutants and ozone-induced neurotoxicity: in vitro and in vivo, along with possible biomarkers to assess ozone-related oxidative stress. As a methodical and scientific strategy for hazard identification and risk characterization of human chemical exposures, toxicological risk assessment is increasingly being implemented. While traditional methods are followed by in vitro toxicology, cell culture techniques are being investigated in modern toxicology. In both human and rodent models, aging makes the olfactory circuitry vulnerable to spreading immunological responses from the periphery to the brain because it lacks the blood-brain barrier. The ozone toxicity is elusive as it shows ventral and dorsal root injury cases even in the milder dose. Its potential toxicity should be disclosed to understand further the clear mechanism insights of how it acts in cellular aspects. Human epidemiological research has confirmed the conclusions that prenatal and postnatal exposure to high levels of air pollution are linked to behavioral alterations in offspring. O3 also enhances blood circulation. It has antibacterial action, which may have an impact on the gut microbiota. It also activates immunological, anti-inflammatory, proteasome, and growth factor signaling Prolonged O3 exposure causes oxidative damage to plasma proteins and lipids and damages the structural and functional integrity of the mitochondria. Finally, various studies need to be conducted to identify the potential biomarkers associated with ozone and the brain.
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Affiliation(s)
- Ankul Singh S
- Department of Pharmacology, SRM College of Pharmacy, SRMIST, Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - Swathi Suresh
- Department of Pharmacology, SRM College of Pharmacy, SRMIST, Kattankulathur, Kancheepuram, Tamil Nadu, India
| | - Chitra Vellapandian
- Department of Pharmacology, SRM College of Pharmacy, SRMIST, Kattankulathur, Kancheepuram, Tamil Nadu, India.
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4
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Li M, Xue Y, Miao X, Ma P, Kong X, Jin Y, Li Y, Wang W, Zhang Q, Deng Q, Feng F. NLRP12 attenuates ozone-induced pulmonary inflammation by regulating canonical NF-κB Pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 262:115275. [PMID: 37531929 DOI: 10.1016/j.ecoenv.2023.115275] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 07/04/2023] [Accepted: 07/17/2023] [Indexed: 08/04/2023]
Abstract
Ozone (O3) is an important urban air pollutant having strong correlations with respiratory diseases. Several lines of evidence suggest that O3 exposure causes airway hyperresponsiveness (AHR) and pulmonary inflammation. Inhibitory innate immune receptors, such as NLRP12, have been demonstrated to alleviate inflammation, but the functional role for NLRP12 in O3-induced lung inflammatory inflammation remains to be reported. Here, we determined whether NLRP12 took a protective role in O3-induced AHR and pulmonary inflammation via the suppression of canonical NF-κB. C57BL/6 J mice were exposed to filtered air (FA) or 0.25, 0.50 and 1.00 ppm (3 h/day for 5 consecutive days) followed by detection of airway resistance, white blood cells, total proteins, and cytokines. Meanwhile, NLRP12 in lung tissue were detected by real time PCR. Moreover, we also examined protein expression of NLRP12 and key biomarkers of NF-κB pathway. It was shown that 24 h post O3 exposure, AHR as wells as total cells, proteins, and cytokines contents in BALF of mice were increased compare to those of FA controls in a dose-dependent manner. Notably, O3-induced AHR and lung inflammation were associated with significant decrease in pulmonary NLRP12 and upregulation of phosphorylated IRAK1, p65 and IκBα in canonical NF-κB pathway. Intratracheal administration of NLRP12-overexpresing adenovirus 4 days prior to O3 exposure alleviated AHR and lung inflammation, and inhibited canonical NF-κB pathway activation. The findings from this study indicate that NLRP12 attenuates O3-induced AHR and pulmonary inflammation, possibly through regulating canonical NF-κB pathway. This provides a novel target for the prevention and treatment of lung diseases induced by O3 exposure.
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Affiliation(s)
- Mengyuan Li
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yuan Xue
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Xinyi Miao
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Pengwei Ma
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Xiangbing Kong
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yuefei Jin
- Department of epidemiology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Yan Li
- Synergetic Innovation Center of Kinesis and Health, School of Physical Education (Main Campus), Zhengzhou University, Zhengzhou, Henan, China
| | - Wei Wang
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Qiao Zhang
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China
| | - Qihong Deng
- Department of Occupational and Environmental Health, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China.
| | - Feifei Feng
- Department of Toxicology, College of Public Health, Zhengzhou University, Zhengzhou, Henan Province, China.
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5
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Barczyk I, Masłyk D, Walczuk N, Kijak K, Skomro P, Gronwald H, Pawlak M, Rusińska A, Sadowska N, Gronwald B, Garstka AA, Lietz-Kijak D. Potential Clinical Applications of Ozone Therapy in Dental Specialties-A Literature Review, Supported by Own Observations. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2023; 20:ijerph20032048. [PMID: 36767415 PMCID: PMC9915530 DOI: 10.3390/ijerph20032048] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2022] [Revised: 01/15/2023] [Accepted: 01/17/2023] [Indexed: 05/31/2023]
Abstract
Apart from conventional treatment, dentists are increasingly relying on physical therapy modalities in their clinical practice. The aim of this literature review is to analyze the clinical relevance and potential uses of ozone in modern dentistry. The research question is geared towards detailing the multiple potential applications of ozone therapy in a range of dental specialties. Based on the available literature, accessed via the PubMed, Google Scholar, Scopus, and EBSCO databases, a detailed search of the electronic literature was performed for 2001-2022. Eligible studies were chosen according to inclusion and exclusion criteria, using keywords: ozone, ozone therapy, therapeutic applications, oxidants, dental disinfectants, oral medicine, physical therapy in dentistry. Out of 834 manuscripts, 273 studies were curated. A total of 70 publications were used in the final consideration. After assessing their quality, they were analyzed to determine the relevance and potential use of ozone in the various aspects of modern dentistry. Ozone therapy is used mainly as an adjunct to the primary clinical or pharmacological treatment. In some cases of oral mucosal disease, it has proven effective as a primary therapy. During the literature analysis, it was noted that ozone therapy in dentistry is a subject of ongoing research, and the results are not always consistent. The multitude of studies in the literature on the applications of ozone in dentistry reflects the search for its undiscovered physical therapeutic potential.
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Affiliation(s)
- Izabela Barczyk
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Diana Masłyk
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Natalia Walczuk
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Karina Kijak
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Piotr Skomro
- Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Helena Gronwald
- Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Maria Pawlak
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Angelika Rusińska
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Natalia Sadowska
- Student Scientific Society at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Barbara Gronwald
- Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
- Doctoral Studies at the Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Adam Andrzej Garstka
- Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
| | - Danuta Lietz-Kijak
- Department of Propaedeutic, Physical Diagnostics and Dental Physiotherapy, Faculty of Medicine and Dentistry, Pomeranian Medical University, 70-204 Szczecin, Poland
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6
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Milillo C, Falcone L, Di Carlo P, Aruffo E, Del Boccio P, Cufaro MC, Patruno A, Pesce M, Ballerini P. Ozone effect on the inflammatory and proteomic profile of human macrophages and airway epithelial cells. Respir Physiol Neurobiol 2023; 307:103979. [PMID: 36243292 DOI: 10.1016/j.resp.2022.103979] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 10/04/2022] [Accepted: 10/09/2022] [Indexed: 11/15/2022]
Abstract
Ozone (O3) is one of the most harmful urban pollutants, but its biological mechanisms have not been fully elucidated yet. Human bronchial epithelial cells (HBEpC) and human macrophage cells (differentiated human monocytic cell line) were exposed to O3 at the concentration of 240 μg/m3 (120 ppb), corresponding to the European Union alert threshold. Cell viability, reactive oxygen species (ROS) production, and pro-inflammatory cytokines release (IL-8 and TNF-α) were evaluated. Results indicated that O3 exposure increases ROS production in both cell types and enhances cytokines release in macrophages. O3 stimulated IL-8 and TNF-α in HBEpC when the cells were pretreated with Lipopolysaccharide, used to mimic a pre-existing inflammatory condition. Proteomics analysis revealed that, in HBEpC, O3 caused the up-regulation of aldo-keto reductase family 1 member B10, a recognized critical protein in lung carcinogenesis. In conclusion, our results show that 120 ppb O3 can lead to potential damage to human health suggesting the need for a revision of the actual alert levels.
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Affiliation(s)
- C Milillo
- Department of Innovative Technologies in Medicine & Dentistry, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - L Falcone
- Department of Innovative Technologies in Medicine & Dentistry, University G. d'Annunzio, 66100 Chieti, Italy
| | - P Di Carlo
- Department of Innovative Technologies in Medicine & Dentistry, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - E Aruffo
- Department of Innovative Technologies in Medicine & Dentistry, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - P Del Boccio
- Department of Pharmacy, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - M C Cufaro
- Department of Pharmacy, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
| | - A Patruno
- Department of Medicine and Aging Sciences, University G. d'Annunzio, 66100 Chieti, Italy
| | - M Pesce
- Department of Medicine and Aging Sciences, University G. d'Annunzio, 66100 Chieti, Italy.
| | - P Ballerini
- Department of Innovative Technologies in Medicine & Dentistry, University G. d'Annunzio, 66100 Chieti, Italy; Center for Advanced Studies and Technology (CAST), "G. d'Annunzio" University of Chieti-Pescara, Chieti, Italy
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7
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Taylor S, Murray A, Francis M, Abramova E, Guo C, Laskin DL, Gow AJ. Regulation of macrophage activation by S-Nitrosothiols following ozone-induced lung injury. Toxicol Appl Pharmacol 2022; 457:116281. [PMID: 36244437 PMCID: PMC10250783 DOI: 10.1016/j.taap.2022.116281] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 10/01/2022] [Accepted: 10/10/2022] [Indexed: 11/07/2022]
Abstract
Acute exposure to ozone causes oxidative stress, characterized by increases in nitric oxide (NO) and other reactive nitrogen species in the lung. NO has been shown to modify thiols generating S-nitrosothiols (SNOs); this results in altered protein function. In macrophages this can lead to changes in inflammatory activity which impact the resolution of inflammation. As SNO formation is dependent on the redox state of both the NO donor and the recipient thiol, the local microenvironment plays a key role in its regulation. This dictates not only the chemical feasibility of SNO formation but also mechanisms by which they may form. In these studies, we compared the ability of the SNO donors, ethyl nitrite (ENO), which targets both hydrophobic and hydrophilic thiols, SNO-propanamide (SNOPPM) which targets hydrophobic thiols, and S-nitroso-N-acetylcysteine. (SNAC) which targets hydrophilic thiols. to modify macrophage activation following ozone exposure. Mice were treated with air or ozone (0.8 ppm, 3 h) followed 1 h later by intranasal administration of ENO, SNOPPM or SNAC (1-500 μM) or appropriate controls. Mice were euthanized 48 h later. Each of the SNO donors reduced ozone-induced inflammation and modified the phenotype of macrophages both within the lung lining fluid and the tissue. ENO and SNOPPM were more effective than SNAC. These findings suggest that the hydrophobic SNO thiol pool targeted by SNOPPM and ENO plays a major role in regulating macrophage phenotype following ozone induced injury.
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Affiliation(s)
- Sheryse Taylor
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Alexa Murray
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Mary Francis
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Elena Abramova
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Changjiang Guo
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Debra L Laskin
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America
| | - Andrew J Gow
- Department of Pharmacology and Toxicology, Ernest Mario School of Pharmacy, Rutgers University, 160 Frelinghuysen Road, Piscataway, NJ 08854, United States of America.
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8
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Kim S, Hollinger H, Radke EG. 'Omics in environmental epidemiological studies of chemical exposures: A systematic evidence map. ENVIRONMENT INTERNATIONAL 2022; 164:107243. [PMID: 35551006 DOI: 10.1016/j.envint.2022.107243] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 03/25/2022] [Accepted: 04/10/2022] [Indexed: 06/15/2023]
Abstract
BACKGROUND Systematic evidence maps are increasingly used to develop chemical risk assessments. These maps can provide an overview of available studies and relevant study information to be used for various research objectives and applications. Environmental epidemiological studies that examine the impact of chemical exposures on various 'omic profiles in human populations provide relevant mechanistic information and can be used for benchmark dose modeling to derive potential human health reference values. OBJECTIVES To create a systematic evidence map of environmental epidemiological studies examining environmental contaminant exposures with 'omics in order to characterize the extent of available studies for future research needs. METHODS Systematic review methods were used to search and screen the literature and included the use of machine learning methods to facilitate screening studies. The Populations, Exposures, Comparators and Outcomes (PECO) criteria were developed to identify and screen relevant studies. Studies that met the PECO criteria after full-text review were summarized with information such as study population, study design, sample size, exposure measurement, and 'omics analysis. RESULTS Over 10,000 studies were identified from scientific databases. Screening processes were used to identify 84 studies considered PECO-relevant after full-text review. Various contaminants (e.g. phthalate, benzene, arsenic, etc.) were investigated in epidemiological studies that used one or more of the four 'omics of interest: epigenomics, transcriptomics, proteomics, and metabolomics . The epidemiological study designs that were used to explore single or integrated 'omic research questions with contaminant exposures were cohort studies, controlled trials, cross-sectional, and case-control studies. An interactive web-based systematic evidence map was created to display more study-related information. CONCLUSIONS This systematic evidence map is a novel tool to visually characterize the available environmental epidemiological studies investigating contaminants and biological effects using 'omics technology and serves as a resource for investigators and allows for a range of applications in chemical research and risk assessment needs.
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Affiliation(s)
- Stephanie Kim
- Superfund and Emergency Management Division, Region 2, U.S. Environmental Protection Agency, NY, USA.
| | - Hillary Hollinger
- Office of Pollution Prevention and Toxics, U.S. Environmental Protection Agency, NC, USA.
| | - Elizabeth G Radke
- Center for Public Health and Environmental Assessment, U.S. Environmental Protection Agency, D.C, USA.
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9
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Turck D, Castenmiller J, De Henauw S, Hirsch‐Ernst KI, Kearney J, Maciuk A, Mangelsdorf I, McArdle HJ, Naska A, Pelaez C, Pentieva K, Siani A, Thies F, Tsabouri S, Vinceti M, Cubadda F, Frenzel T, Heinonen M, Maradona MP, Marchelli R, Neuhäuser‐Berthold M, Poulsen M, Schlatter JR, van Loveren H, Gelbmann W, Knutsen HK. Safety of bovine milk osteopontin as a Novel food pursuant to Regulation (EU) 2015/2283. EFSA J 2022; 20:e07137. [PMID: 35572202 PMCID: PMC9074041 DOI: 10.2903/j.efsa.2022.7137] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
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10
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Colakerol A, Temiz MZ, Tavukcu HH, Aykan S, Ozsoy S, Sahan A, Kandirali E, Semercioz A. Effects of ozone treatment on penile erection capacity and nitric oxide synthase levels in diabetic rats. Int J Impot Res 2021; 33:1-8. [PMID: 32393847 DOI: 10.1038/s41443-020-0301-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 04/11/2020] [Accepted: 04/28/2020] [Indexed: 02/07/2023]
Abstract
We aimed to determine the effects of ozone treatment on functional and biochemical changes in corpus cavernosum of diabetic rats. A total of 18 rats were included in the study. The rats were divided into the three groups as control, diabetes mellitus, and diabetes mellitus + ozone therapy groups. In the latter, ozone gas mixture was administered intraperitoneally for 2 weeks after the induction of experimental diabetes model. Erectile response was evaluated by determining mean intracavernosal pressure. Tissue neuronal, inducible and endothelial nitric oxide synthase levels were evaluated with commercial ELISA kits. Immunohistochemical evaluation was also performed to determine the expression levels of nitric oxide synthases semiquantatively. Mean intracavernosal pressure and intracavernosal pressure/systemic arterial blood pressure ratio were significantly higher in the diabetes mellitus + ozone therapy group than those of diabetes mellitus group (24.57 ± 6.36 mmHg vs. 5.98 ± 2.04 mmHg, p = 0.005 and 0.81 ± 0.16 vs. 0.26 ± 0.11, p = 0.0001, respectively). The level of penile tissue endothelial nitric oxide synthase was significantly higher in diabetes mellitus + ozone therapy group compared with others (19.28 ± 3.40 ng/mL vs. 13.47 ± 2.06 ng/mL and 13.28 ± 1.48 ng/mL, P = 0.01). Endothelial nitric oxide synthase expression increased significantly with ozone therapy. Our results suggest that ozone therapy may be beneficial in reducing the negative effects of diabetes on erectile dysfunction as a result of enhanced enzymatic activity in endothelial nitric oxide synthase levels.
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Affiliation(s)
- Aykut Colakerol
- Department of Urology, University of Health Sciences Bagcilar Training and Research Hospital, Istanbul, Turkey.
| | - Mustafa Zafer Temiz
- Department of Urology, University of Health Sciences Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Hasan Huseyin Tavukcu
- Department of Urology, University of Health Sciences Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
| | - Serdar Aykan
- Department of Urology, University of Health Sciences Haydarpasa Numune Training and Research Hospital, Istanbul, Turkey
| | - Sule Ozsoy
- Department of Urology, University of Health Sciences Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Ahmet Sahan
- Department of Urology, University of Health Sciences Dr. Lutfi Kirdar Kartal Training and Research Hospital, Istanbul, Turkey
| | - Engin Kandirali
- Department of Urology, University of Health Sciences Bagcilar Training and Research Hospital, Istanbul, Turkey
| | - Atilla Semercioz
- Department of Urology, University of Health Sciences Bagcilar Training and Research Hospital, Istanbul, Turkey
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11
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Davis KU, Sheats MK. Differential gene expression and Ingenuity Pathway Analysis of bronchoalveolar lavage cells from horses with mild/moderate neutrophilic or mastocytic inflammation on BAL cytology. Vet Immunol Immunopathol 2021; 234:110195. [PMID: 33588285 DOI: 10.1016/j.vetimm.2021.110195] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 11/18/2020] [Accepted: 01/21/2021] [Indexed: 01/21/2023]
Abstract
Mild to moderate equine asthma syndrome (mEAS) affects horses of all ages and breeds. To date, the etiology and pathophysiology of mEAS are active areas of research, and it remains incompletely understood whether mEAS horses with different immune cell 'signatures' on BAL cytology represent different phenotypes, distinct pathobiological mechanisms (endotypes), varied environmental conditions, disease severity, genetic predispositions, or all of the above. In this descriptive study, we compared gene expression data from BAL cells isolated from horses with normal BALF cytology (n = 5), to those isolated from horses with mild/moderate neutrophilic inflammation (n = 5), or mild/moderate mastocytic inflammation (n = 5). BAL cell protein lysates were analyzed for cytokine/chemokine levels using Multiplex Bead Immunoassay, and for select proteins using immunoblot. The transcriptome, determined by RNA-seq and analyzed with DEseq2, contained 20, 63, and 102 significantly differentially expressed genes in horses with normal vs. neutrophilic, normal vs. mastocytic, and neutrophilic vs. mastocytic BALF cytology, respectively. Pathway analyses revealed that BAL-isolated cells from horses with neutrophilic vs. normal cytology showed enrichment in inflammation pathways, and horses with mastocytic vs. normal cytology showed enrichment in pathways involved in fibrosis and allergic reaction. BAL cells from horses with mastocytic mEAS, compared to neutrophilic mEAS, showed enrichment in pathways involved in alteration of tissue structures. Cytokine analysis determined that IL-1β was significantly different in the lysates from horses with neutrophilic inflammation compared to those with normal or mastocytic BAL cytology. Immunoblot revealed significant difference in the relative level of MMP2 in horses with neutrophilic vs. mastocytic mEAS. Upregulation of mRNA transcripts involved in the IL-1 family cytokine signaling axis (IL1a, IL1b, and IL1R2) in neutrophilic mEAS, as well as KIT mRNA in mastocytic mEAS, are novel, potentially clinically relevant, findings of this study. These findings further inform our understanding of inflammatory cell subtypes in mEAS.
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Affiliation(s)
- Kaori Uchiumi Davis
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Dr, Raleigh, NC, 27607, United States; Center for Comparative Medicine and Translational Research, North Carolina State University, 1060 William Moore Dr, Raleigh, NC, 27607, United States
| | - M Katie Sheats
- Department of Clinical Sciences, College of Veterinary Medicine, North Carolina State University, 1060 William Moore Dr, Raleigh, NC, 27607, United States; Center for Comparative Medicine and Translational Research, North Carolina State University, 1060 William Moore Dr, Raleigh, NC, 27607, United States.
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12
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Bind MAC, Rubin DB, Cardenas A, Dhingra R, Ward-Caviness C, Liu Z, Mirowsky J, Schwartz JD, Diaz-Sanchez D, Devlin RB. Heterogeneous ozone effects on the DNA methylome of bronchial cells observed in a crossover study. Sci Rep 2020; 10:15739. [PMID: 32978449 PMCID: PMC7519112 DOI: 10.1038/s41598-020-72068-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 08/18/2020] [Indexed: 01/08/2023] Open
Abstract
We used a randomized crossover experiment to estimate the effects of ozone (vs. clean air) exposure on genome-wide DNA methylation of target bronchial epithelial cells, using 17 volunteers, each randomly exposed on two separated occasions to clean air or 0.3-ppm ozone for two hours. Twenty-four hours after exposure, participants underwent bronchoscopy to collect epithelial cells whose DNA methylation was measured using the Illumina 450 K platform. We performed global and regional tests examining the ozone versus clean air effect on the DNA methylome and calculated Fisher-exact p-values for a series of univariate tests. We found little evidence of an overall effect of ozone on the DNA methylome but some suggestive changes in PLSCR1, HCAR1, and LINC00336 DNA methylation after ozone exposure relative to clean air. We observed some participant-to-participant heterogeneity in ozone responses.
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Affiliation(s)
- M-A C Bind
- Department of Statistics, Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA.
| | - D B Rubin
- Yau Center for Mathematical Sciences, Tsinghua University, Beijing, China.,Department of Statistical Science, Fox School of Business, Temple University, Philadelphia, PA, USA
| | - A Cardenas
- Department of Environmental Health Sciences, UC Berkeley School of Public Health, Berkeley, CA, USA
| | - R Dhingra
- Department of Environmental Sciences and Engineering, UNC Gillings School of Global Public Health, Chapel Hill, NC, USA
| | - C Ward-Caviness
- Environmental Public Health Division, NHEERL, US Environmental Protection Agency, Research Triangle Park, NC, USA
| | - Z Liu
- Department of Statistics and Actuarial Sciences, University of Hong Kong, Pok Fu Lam, Hong Kong
| | - J Mirowsky
- Department of Chemistry, SUNY College of Environmental Science and Forestry, Syracuse, NY, USA
| | - J D Schwartz
- Department of Environmental Health, Harvard School of Public Health, Boston, MA, USA
| | - D Diaz-Sanchez
- Environmental Public Health Division, NHEERL, US Environmental Protection Agency, Research Triangle Park, NC, USA
| | - R B Devlin
- Environmental Public Health Division, NHEERL, US Environmental Protection Agency, Research Triangle Park, NC, USA
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13
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Tovar A, Smith GJ, Thomas JM, Crouse WL, Harkema JR, Kelada SNP. Transcriptional Profiling of the Murine Airway Response to Acute Ozone Exposure. Toxicol Sci 2020; 173:114-130. [PMID: 31626304 PMCID: PMC6944221 DOI: 10.1093/toxsci/kfz219] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
Ambient ozone (O3) exposure has serious consequences on respiratory health, including airway inflammation and injury. Decades of research have yielded thorough descriptions of these outcomes; however, less is known about the molecular processes that drive them. The aim of this study was to further describe the cellular and molecular responses to O3 exposure in murine airways, with a particular focus on transcriptional responses in 2 critical pulmonary tissue compartments: conducting airways (CA) and airway macrophages (AM). After exposing adult, female C57BL/6J mice to filtered air, 1 or 2 ppm O3, we assessed hallmark responses including airway inflammation (cell counts and cytokine secretion) and injury (epithelial permeability), followed by gene expression profiling of CA and AM by RNA-seq. As expected, we observed concentration-dependent increases in airway inflammation and injury. Conducting airways and AM both exhibited changes in gene expression to both 1 and 2 ppm O3 that were largely compartment-specific. In CA, genes associated with epithelial barrier function, detoxification processes, and cellular proliferation were altered, while O3 affected genes involved in innate immune signaling, cytokine production, and extracellular matrix remodeling in AM. Further, CA and AM also exhibited notable differences in concentration-response expression patterns for large numbers of genes. Overall, our study has described transcriptional responses to acute O3 exposure, revealing both shared and unique gene expression patterns across multiple concentrations of O3 and in 2 important O3-responsive tissues. These profiles provide broad mechanistic insight into pulmonary O3 toxicity, and reveal a variety of targets for focused follow-up studies.
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Affiliation(s)
- Adelaide Tovar
- Department of Genetics
- Curriculum in Genetics & Molecular Biology
| | - Gregory J Smith
- Department of Genetics
- Curriculum in Toxicology & Environmental Medicine
| | | | - Wesley L Crouse
- Department of Genetics
- Curriculum in Bioinformatics & Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Jack R Harkema
- Department of Pathology & Diagnostic Investigation and Institute for Integrated Toxicology, Michigan State University, East Lansing, Michigan 48824
| | - Samir N P Kelada
- Department of Genetics
- Curriculum in Genetics & Molecular Biology
- Curriculum in Toxicology & Environmental Medicine
- Curriculum in Bioinformatics & Computational Biology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
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14
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Mumby S, Chung KF, Adcock IM. Transcriptional Effects of Ozone and Impact on Airway Inflammation. Front Immunol 2019; 10:1610. [PMID: 31354743 PMCID: PMC6635463 DOI: 10.3389/fimmu.2019.01610] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 06/27/2019] [Indexed: 12/24/2022] Open
Abstract
Epidemiological and challenge studies in healthy subjects and in individuals with asthma highlight the health impact of environmental ozone even at levels considered safe. Acute ozone exposure in man results in sputum neutrophilia in 30% of subjects particularly young children, females, and those with ongoing cardiopulmonary disease. This may be associated with systemic inflammation although not in all cases. Chronic exposure amplifies these effects and can result in the formation of asthma-like symptoms and immunopathology. Asthmatic patients who respond to ozone (responders) induce a greater number of genes in bronchoalveolar (BAL) macrophages than healthy responders with up-regulation of inflammatory and immune pathways under the control of cytokines and chemokines and the enhanced expression of remodeling and repair programmes including those associated with protease imbalances and cell-cell adhesion. These pathways are under the control of several key transcription regulatory factors including nuclear factor (NF)-κB, anti-oxidant factors such as nuclear factor (erythroid-derived 2)-like 2 NRF2, the p38 mitogen activated protein kinase (MAPK), and priming of the immune system by up-regulating toll-like receptor (TLR) expression. Murine and cellular models of acute and chronic ozone exposure recapitulate the inflammatory effects seen in humans and enable the elucidation of key transcriptional pathways. These studies emphasize the importance of distinct transcriptional networks in driving the detrimental effects of ozone. Studies indicate the critical role of mediators including IL-1, IL-17, and IL-33 in driving ozone effects on airway inflammation, remodeling and hyperresponsiveness. Transcription analysis and proof of mechanisms studies will enable the development of drugs to ameliorate the effects of ozone exposure in susceptible individuals.
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Affiliation(s)
- Sharon Mumby
- Respiratory Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Kian Fan Chung
- Respiratory Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Ian M Adcock
- Respiratory Section, National Heart and Lung Institute, Imperial College London, London, United Kingdom
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15
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The Biochemical and Pharmacological Properties of Ozone: The Smell of Protection in Acute and Chronic Diseases. Int J Mol Sci 2019; 20:ijms20030634. [PMID: 30717203 PMCID: PMC6387239 DOI: 10.3390/ijms20030634] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/22/2019] [Accepted: 01/25/2019] [Indexed: 01/10/2023] Open
Abstract
Ozone therapy has been widely used in everyday clinical practice over the last few years, leading to significant clinical results in the treatment of herniated discs and pain management. Nevertheless, further studies have demonstrated its potential efficacy and safety under other clinical and experimental conditions. However, some of these studies showed controversial results regarding the safety and efficacy of ozone therapy, thus mining its potential use in an everyday clinical practice. To this regard, it should be considered that extensive literature review reported the use of ozone in a significant different dose range and with different delivery systems. The aim of the present review is to describe the various pharmacological effects of ozone in different organs and clinical conditions and to provide possible biochemical and molecular insights for ozone biological properties, thus providing a possible explanation for various controversial clinical outcomes described in the scientific literature.
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16
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Cheng W, Duncan KE, Ghio AJ, Ward-Caviness C, Karoly ED, Diaz-Sanchez D, Conolly RB, Devlin RB. Changes in Metabolites Present in Lung-Lining Fluid Following Exposure of Humans to Ozone. Toxicol Sci 2018; 163:430-439. [PMID: 29471466 PMCID: PMC6348881 DOI: 10.1093/toxsci/kfy043] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Controlled human exposure to the oxidant air pollutant ozone causes decrements in lung function and increased inflammation as evidenced by neutrophil influx into the lung and increased levels of proinflammatory cytokines in the airways. Here we describe a targeted metabolomics evaluation of human bronchoalveolar lavage fluid (BALF) following controlled in vivo exposure to ozone to gain greater insight into its pulmonary effects. In a 2-arm cross-over study, each healthy adult human volunteer was randomly exposed to filtered air (FA) and to 0.3 ppm ozone for 2 h while undergoing intermittent exercise with a minimum of 4 weeks between exposures. Bronchoscopy was performed and BALF obtained at 1 (n = 9) or 24 (n = 23) h postexposure. Metabolites were detected using ultrahigh performance liquid chromatography-tandem mass spectroscopy. At 1-h postexposure, a total of 28 metabolites were differentially expressed (DE) (p < .05) following ozone exposure compared with FA-exposure. These changes were associated with increased glycolysis and antioxidant responses, suggesting rapid increased energy utilization as part of the cellular response to oxidative stress. At 24-h postexposure, 41 metabolites were DE. Many of the changes were in amino acids and linked with enhanced proteolysis. Changes associated with increased lipid membrane turnover were also observed. These later-stage changes were consistent with ongoing repair of airway tissues. There were 1.37 times as many metabolites were differentially expressed at 24 h compared with 1-h postexposure. The changes at 1 h reflect responses to oxidative stress while the changes at 24 h indicate a broader set of responses consistent with tissue repair. These results illustrate the ability of metabolomic analysis to identify mechanistic features of ozone toxicity and aspects of the subsequent tissue response.
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Affiliation(s)
- WanYun Cheng
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
| | - Kelly E Duncan
- School of Medicine, University of North Carolina-Chapel Hill, Chapel Hill, North Carolina 27599
| | - Andrew J Ghio
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
| | - Cavin Ward-Caviness
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
| | | | - David Diaz-Sanchez
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
| | - Rory B Conolly
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
| | - Robert B Devlin
- National Health and Environmental Effects Research Laboratory, U.S. Environmental Protection Agency, Research Triangle Park, North Carolina 2799
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17
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Wang Y, Tan M, Ouyang H, Deng L. Effects of ozone stimulation of bronchial epithelial cells on proliferation and collagen synthesis of co-cultured lung fibroblasts. Exp Ther Med 2018; 15:5314-5322. [PMID: 29896220 PMCID: PMC5994781 DOI: 10.3892/etm.2018.6122] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2017] [Accepted: 03/01/2018] [Indexed: 12/22/2022] Open
Abstract
Ozone (O3) as a major air pollutant is widely recognized for causing pathological changes of the airway system. However, it is not clear whether O3 exposure of bronchial epithelial cells (BECs) influences the proliferation and collagen synthesis of submucosal fibroblasts and contributes to the pathogenesis of airway remodeling in diseases, including asthma. In the present study, a co-culture method was applied to culture human lung fibroblasts (HLFs) with human bronchial epithelial cells (HBECs) that were pre-stimulated with O3. Following co-culture for up to 24 h, the proliferation of HLFs was measured using MTT colorimetry. Furthermore, the collagen synthesis capacity of HLFs was determined by the level of hydroxyproline. In addition, the protein expression levels of cytokines, including transforming growth factor (TGF)-β1, tumor necrosis factor (TNF)-α and prostaglandin E2 (PGE2) were assessed. Results indicated that the proliferation of HLFs co-cultured with HBECs was significantly inhibited when compared with HLFs cultured alone (P<0.05). By contrast, co-culture with O3-stimulated HBECs significantly promoted the proliferation of HLFs compared with the HLFs cultured alone or those cultured with HBECs but no O3 stimulation, respectively (P<0.05 and P<0.01). Furthermore, similar effects were observed regarding the collagen synthesis capacity of HLFs co-cultured with HBECs for 24. In the supernatant, TGF-β1 concentration was continuously increased over 24 h, whereas the concentration of PGE2 increased and plateaued between 12 to 24 h and TNF-α concentration was not significantly altered during the assessed time period. To conclude, the present results suggest that O3 pre-exposure of HBECs may promote the transformation of HLFs from the typical inhibitory state into a promoting state with respect to proliferation and collagen synthesis, which may likely occur through a mechanism that influences the balance between pro- and anti-inflammatory factors, including TGF-β1 and PGE2. The present findings may improve the understanding of the mechanism involved in O3-induced airway remodeling from a novel perspective of maintenance/loss of steady-state function of the airway epithelium.
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Affiliation(s)
- Yue Wang
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu 213164, P.R. China.,Department of Nursing, School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu 213164, P.R. China
| | - Meiling Tan
- Department of Physiology, School of Basic Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Haiping Ouyang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, Guangdong 510000, P.R. China
| | - Linhong Deng
- Changzhou Key Laboratory of Respiratory Medical Engineering, Institute of Biomedical Engineering and Health Sciences, Changzhou University, Changzhou, Jiangsu 213164, P.R. China.,Department of Nursing, School of Pharmaceutical Engineering and Life Science, Changzhou University, Changzhou, Jiangsu 213164, P.R. China
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18
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Spann K, Snape N, Baturcam E, Fantino E. The Impact of Early-Life Exposure to Air-borne Environmental Insults on the Function of the Airway Epithelium in Asthma. Ann Glob Health 2018; 82:28-40. [PMID: 27325066 DOI: 10.1016/j.aogh.2016.01.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The airway epithelium is both a physical barrier protecting the airways from environmental insults and a significant component of the innate immune response. There is growing evidence that exposure of the airway epithelium to environmental insults in early life may lead to permanent changes in structure and function that underlie the development of asthma. Here we review the current published evidence concerning the link between asthma and epithelial damage within the airways and identify gaps in knowledge for future studies.
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Affiliation(s)
- Kirsten Spann
- School of Biomedical Sciences, Queensland University of Technology, Queensland, Australia.
| | - Natale Snape
- Children's Health Research Centre, University of Queensland, Queensland, Australia
| | - Engin Baturcam
- Children's Health Research Centre, University of Queensland, Queensland, Australia
| | - Emmanuelle Fantino
- Children's Health Research Centre, University of Queensland, Queensland, Australia
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19
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Poma A, Colafarina S, Aruffo E, Zarivi O, Bonfigli A, Di Bucchianico S, Di Carlo P. Effects of ozone exposure on human epithelial adenocarcinoma and normal fibroblasts cells. PLoS One 2017; 12:e0184519. [PMID: 28886142 PMCID: PMC5590931 DOI: 10.1371/journal.pone.0184519] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 08/27/2017] [Indexed: 12/03/2022] Open
Abstract
Previous studies show variable ozone cytotoxicity and genotoxicity in cell cultures, laboratory animals and humans directly exposed to tropospheric ozone. The aim of this study was therefore to investigate and compare the cyto and genotoxic effects of ozone using adenocarcinoma human alveolar basal epithelial cells A549 and normal human fibroblasts Hs27. A cell culture chamber with controlled atmosphere (a simulation reactor) was built to inject a flow of 120 ppb of ozone, which is two times the threshold value for the protection of human health, fixed by the EU legislation. Cell proliferation was evaluated by a luminescent cell viability assay while we assessed the genotoxic potential of ozone by the induction of micronuclei as well as evaluating DNA strand breaks by the induction of micronuclei evaluated by means of the cytokinesis-block micronucleus (CBMN) assay as well as evaluating DNA strand breaks by Alkaline Comet Assay (CA) or Comet Assay. A549 cells viability decreases significantly at 24 hours treatment with 120 ppb of O3 while at 48 hours and 72 hours O3 treated cells viability doesn’t differ in respect to the control. However a significative decrease of A549 viability is shown at 72 hours vs. 48 hours in both treated and not-treated cells. The viability trend in the Hs27 cells did not show any significant changes in treated samples compared to the control in all conditions. The two genotoxicity biomarkers, the micronucleus and the comet tests, showed in both the cell types exposed to ozone, a significant increase in the number of micronuclei and in the tail DNA % in respect to the control even if at different times/cell type. Moreover, we found that O3 provokes genotoxic effects more evident in A549 cancer cells than in normal fibroblasts Hs27 ones. We applied a cell growth simulation model referred to ozone treated or not cell lines to confirm that the ozone exposure causes a slackening in the cells replication.
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Affiliation(s)
- Anna Poma
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
- * E-mail:
| | - Sabrina Colafarina
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Eleonora Aruffo
- Department of Psychological, Health and Territorial Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
- Centre of Excellence CETEMPS, University of L'Aquila, L'Aquila, Italy
| | - Osvaldo Zarivi
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | - Antonella Bonfigli
- Department of Life, Health and Environmental Sciences, University of L'Aquila, L'Aquila, Italy
| | | | - Piero Di Carlo
- Department of Psychological, Health and Territorial Sciences, University "G. d'Annunzio" of Chieti-Pescara, Chieti, Italy
- Centre of Excellence CETEMPS, University of L'Aquila, L'Aquila, Italy
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20
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Sweeney TE, Lofgren S, Khatri P, Rogers AJ. Gene Expression Analysis to Assess the Relevance of Rodent Models to Human Lung Injury. Am J Respir Cell Mol Biol 2017; 57:184-192. [PMID: 28324666 DOI: 10.1165/rcmb.2016-0395oc] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The relevance of animal models to human diseases is an area of intense scientific debate. The degree to which mouse models of lung injury recapitulate human lung injury has never been assessed. Integrating data from both human and animal expression studies allows for increased statistical power and identification of conserved differential gene expression across organisms and conditions. We sought comprehensive integration of gene expression data in experimental acute lung injury (ALI) in rodents compared with humans. We performed two separate gene expression multicohort analyses to determine differential gene expression in experimental animal and human lung injury. We used correlational and pathway analyses combined with external in vitro gene expression data to identify both potential drivers of underlying inflammation and therapeutic drug candidates. We identified 21 animal lung tissue datasets and three human lung injury bronchoalveolar lavage datasets. We show that the metasignatures of animal and human experimental ALI are significantly correlated despite these widely varying experimental conditions. The gene expression changes among mice and rats across diverse injury models (ozone, ventilator-induced lung injury, LPS) are significantly correlated with human models of lung injury (Pearson r = 0.33-0.45, P < 1E-16). Neutrophil signatures are enriched in both animal and human lung injury. Predicted therapeutic targets, peptide ligand signatures, and pathway analyses are also all highly overlapping. Gene expression changes are similar in animal and human experimental ALI, and provide several physiologic and therapeutic insights to the disease.
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Affiliation(s)
- Timothy E Sweeney
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Shane Lofgren
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Purvesh Khatri
- 1 Stanford Institute for Immunity, Transplantation and Infection.,2 Biomedical Informatics Research, and
| | - Angela J Rogers
- 3 Department of Medicine, Division of Pulmonary and Critical Care Medicine, Stanford University School of Medicine, Stanford, California
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21
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Duan L, Li J, Ma P, Yang X, Xu S. Vitamin E antagonizes ozone-induced asthma exacerbation in Balb/c mice through the Nrf2 pathway. Food Chem Toxicol 2017. [PMID: 28624471 DOI: 10.1016/j.fct.2017.06.025] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Millions of people are regularly exposed to ozone, a gas known to contribute significantly to worsening the symptoms of patients with asthma. However, the mechanisms underlying these ozone exacerbation effects are not fully understood. In this study, we examined the exacerbation effect of ozone in OVA-induced asthma mice and tried to demonstrate the protective mechanism of vitamin E (VE). An asthma mouse model was established, and used to identify the exacerbating effects of ozone by assessing cytokine and serum immunoglobulin concentrations, airway leukocyte infiltration, histopathological changes in lung tissues, and airway hyper-responsiveness. We then determined the amount of reactive oxygen species (ROS) accumulated, the extent to which VE induced ROS elimination, and examined the antagonistic effects of VE on the ozone-induced exacerbating effects. This study showed that 1-ppm ozone exposure could exacerbate OVA-induced asthma in mice. More importantly we found that ozone induced oxidative stress in asthmatic airways may lead to the inhibition of Nuclear factor-erythroid 2-related factor 2 (Nrf2), and may subsequently induce even more exaggerated oxidative stress associated with asthma exacerbation. Through VE induced Nrf2 activation and the subsequent increase in Nrf2 target protein expression, this study suggests a novel mechanism for alleviating ozone exacerbated asthma symptoms.
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Affiliation(s)
- Liju Duan
- Key Laboratory of Environment and Health (Huazhong University of Science and Technology), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China; College of Public Health, Zhengzhou University, Zhengzhou 450001, China
| | - Jinquan Li
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Ping Ma
- Research Center of Basic Medical Sciences, School of Basic Medical Sciences, Hubei University of Science and Technology, Xianning 437100, China
| | - Xu Yang
- Section of Environmental Biomedicine, Hubei Key Laboratory of Genetic Regulation and Integrative Biology, College of Life Sciences, Central China Normal University, Wuhan 430079, China
| | - Shunqing Xu
- Key Laboratory of Environment and Health (Huazhong University of Science and Technology), Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (Incubation), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Zhu LY, Ni ZH, Luo XM, Wang XB. Advance of antioxidants in asthma treatment. World J Respirol 2017; 7:17-28. [DOI: 10.5320/wjr.v7.i1.17] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 11/23/2016] [Accepted: 01/14/2017] [Indexed: 02/07/2023] Open
Abstract
Asthma is an allergic disease, characterized as a recurrent airflow limitation, airway hyperreactivity, and chronic inflammation, involving a variety of cells and cytokines. Reactive oxygen species have been proven to play an important role in asthma. The pathogenesis of oxidative stress in asthma involves an imbalance between oxidant and antioxidant systems that is caused by environment pollutants or endogenous reactive oxygen species from inflammation cells. There is growing evidence that antioxidant treatments that include vitamins and food supplements have been shown to ameliorate this oxidative stress while improving the symptoms and decreasing the severity of asthma. In this review, we summarize recent studies that are related to the mechanisms and biomarkers of oxidative stress, antioxidant treatments in asthma.
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Wicher SA, Jacoby DB, Fryer AD. Newly divided eosinophils limit ozone-induced airway hyperreactivity in nonsensitized guinea pigs. Am J Physiol Lung Cell Mol Physiol 2017; 312:L969-L982. [PMID: 28258108 PMCID: PMC5495948 DOI: 10.1152/ajplung.00530.2016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Revised: 02/27/2017] [Accepted: 02/27/2017] [Indexed: 01/21/2023] Open
Abstract
Ozone causes vagally mediated airway hyperreactivity and recruits inflammatory cells, including eosinophils, to lungs, where they mediate ozone-induced hyperreactivity 1 day after exposure but are paradoxically protective 3 days later. We aimed to test the role of newly divided eosinophils in ozone-induced airway hyperreactivity in sensitized and nonsensitized guinea pigs. Nonsensitized and sensitized guinea pigs were treated with 5-bromo-2-deoxyuridine (BrdU) to label newly divided cells and were exposed to air or ozone for 4 h. Later (1 or 3 days later), vagally induced bronchoconstriction was measured, and inflammatory cells were harvested from bone marrow, blood, and bronchoalveolar lavage. Ozone induced eosinophil hematopoiesis. One day after ozone, mature eosinophils dominate the inflammatory response and potentiate vagally induced bronchoconstriction. However, by 3 days, newly divided eosinophils have reached the lungs, where they inhibit ozone-induced airway hyperreactivity because depleting them with antibody to IL-5 or a TNF-α antagonist worsened vagally induced bronchoconstriction. In sensitized guinea pigs, both ozone-induced eosinophil hematopoiesis and subsequent recruitment of newly divided eosinophils to lungs 3 days later failed to occur. Thus mature eosinophils dominated the ozone-induced inflammatory response in sensitized guinea pigs. Depleting these mature eosinophils prevented ozone-induced airway hyperreactivity in sensitized animals. Ozone induces eosinophil hematopoiesis and recruitment to lungs, where 3 days later, newly divided eosinophils attenuate vagally mediated hyperreactivity. Ozone-induced hematopoiesis of beneficial eosinophils is blocked by a TNF-α antagonist or by prior sensitization. In these animals, mature eosinophils are associated with hyperreactivity. Thus interventions targeting eosinophils, although beneficial in atopic individuals, may delay resolution of airway hyperreactivity in nonatopic individuals.
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Affiliation(s)
- Sarah A Wicher
- Department of Physiology and Pharmacology, Oregon Health and Science University, Portland, Oregon; and
| | - David B Jacoby
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Oregon Health and Science University, Portland, Oregon
| | - Allison D Fryer
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Oregon Health and Science University, Portland, Oregon
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Tham A, Lullo D, Dalton S, Zeng S, van Koeverden I, Arjomandi M. Modeling vascular inflammation and atherogenicity after inhalation of ambient levels of ozone: exploratory lessons from transcriptomics. Inhal Toxicol 2017; 29:96-105. [PMID: 28412860 PMCID: PMC7456636 DOI: 10.1080/08958378.2017.1310333] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Revised: 03/09/2017] [Accepted: 03/17/2017] [Indexed: 12/14/2022]
Abstract
BACKGROUND Epidemiologic studies have linked inhalation of air pollutants such as ozone to cardiovascular mortality. Human exposure studies have shown that inhalation of ambient levels of ozone causes airway and systemic inflammation and an imbalance in sympathetic/parasympathetic tone. METHODS To explore molecular mechanisms through which ozone inhalation contributes to cardiovascular mortality, we compared transcriptomics data previously obtained from bronchoalveolar lavage (BAL) cells obtained from healthy subjects after inhalational exposure to ozone (200 ppb for 4 h) to those of various cell samples from 11 published studies of patients with atherosclerotic disease using the Nextbio genomic data platform. Overlapping gene ontologies that may be involved in the transition from pulmonary to systemic vascular inflammation after ozone inhalation were explored. Local and systemic enzymatic activity of an overlapping upregulated gene, matrix metalloproteinase-9 (MMP-9), was measured by zymography after ozone exposure. RESULTS A set of differentially expressed genes involved in response to stimulus, stress, and wounding were in common between the ozone and most of the atherosclerosis studies. Many of these genes contribute to biological processes such as cholesterol metabolism dysfunction, increased monocyte adherence, endothelial cell lesions, and matrix remodeling, and to diseases such as heart failure, ischemia, and atherosclerotic occlusive disease. Inhalation of ozone increased MMP-9 enzymatic activity in both BAL fluid and serum. CONCLUSIONS Comparison of transcriptomics between BAL cells after ozone exposure and various cell types from patients with atherosclerotic disease reveals commonly regulated processes and potential mechanisms by which ozone inhalation may contribute to progression of pre-existent atherosclerotic lesions.
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Affiliation(s)
- Andrea Tham
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Dominic Lullo
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
- Chicago Medical School, Rosalind Franklin University, North Chicago, Illinois, USA
| | - Sarah Dalton
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
- Human Exposure Laboratory, Division of Occupational and Environmental Medicine, University of California, San Francisco, California, USA
| | - Siyang Zeng
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
- Human Exposure Laboratory, Division of Occupational and Environmental Medicine, University of California, San Francisco, California, USA
| | - Ian van Koeverden
- Laboratory of Experimental Cardiology, University Medical Center Utrecht, Utrecht, the Netherlands
| | - Mehrdad Arjomandi
- San Francisco Veterans Affairs Medical Center, San Francisco, California, USA
- Human Exposure Laboratory, Division of Occupational and Environmental Medicine, University of California, San Francisco, California, USA
- Division of Pulmonary, Critical Care, Allergy and Immunology, and Sleep Medicine, University of California, San Francisco, California, USA
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