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Pilkington AW, Buragamadagu B, Johnston RA. Weighted Breaths: Exploring Biologic and Non-Biologic Therapies for Co-Existing Asthma and Obesity. Curr Allergy Asthma Rep 2024; 24:381-393. [PMID: 38878250 PMCID: PMC11233394 DOI: 10.1007/s11882-024-01153-x] [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] [Accepted: 05/21/2024] [Indexed: 07/10/2024]
Abstract
PURPOSE OF REVIEW To discuss the effectiveness of biologics, some of which comprise the newest class of asthma controller medications, and non-biologics in the treatment of asthma co-existing with obesity. RECENT FINDINGS Our review of recent preliminary and published data from clinical trials revealed that obese asthmatics respond favorably to dupilumab, mepolizumab, omalizumab, and tezepelumab, which are biologics currently indicated as add-on maintenance therapy for severe asthma. Furthermore, clinical trials are ongoing to assess the efficacy of non-biologics in the treatment of obese asthma, including a glucagon-like peptide-1 receptor agonist, a Janus kinase inhibitor, and probiotics. Although many biologics presently indicated as add-on maintenance therapy for severe asthma exhibit efficacy in obese asthmatics, other phenotypes of asthma co-existing with obesity may be refractory to these medications. Thus, to improve quality of life and asthma control, it is imperative to identify therapeutic options for all existing phenotypes of obese asthma.
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Affiliation(s)
- Albert W Pilkington
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, United States Department of Health and Human Services, 1000 Frederick Lane, Morgantown, WV, 26508-5402, USA
| | - Bhanusowmya Buragamadagu
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA
| | - Richard A Johnston
- Health Effects Laboratory Division, National Institute for Occupational Safety and Health, Centers for Disease Control and Prevention, United States Department of Health and Human Services, 1000 Frederick Lane, Morgantown, WV, 26508-5402, USA.
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Medicine, School of Medicine, West Virginia University, Morgantown, WV, USA.
- Department of Physiology, Pharmacology, and Toxicology, School of Medicine, West Virginia University, Morgantown, WV, USA.
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Tashiro H, Kurihara Y, Kuwahara Y, Takahashi K. Impact of obesity in asthma: Possible future therapies. Allergol Int 2024; 73:48-57. [PMID: 37659887 DOI: 10.1016/j.alit.2023.08.007] [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: 05/12/2023] [Revised: 07/10/2023] [Accepted: 07/31/2023] [Indexed: 09/04/2023] Open
Abstract
Obesity is one of the factors associated with the severity of asthma. Obesity is associated with aggravation of the pathophysiology of asthma, including exacerbations, airway inflammation, decreased pulmonary function, and airway hyperresponsiveness. The present review addresses the characteristics of asthma with obesity, focusing especially on the heterogeneity caused by the degree of type 2 inflammation, sex differences, the onset of asthma, and race differences. To understand the severity mechanisms in asthma and obesity, such as corticosteroid resistance, fatty acids, gut microbiome, and cytokines, several basic research studies are evaluated. Finally, possible future therapies, including weight reduction, microbiome-targeted therapies, and other molecular targeted therapies are addressed. We believe that the present review will contribute to better understanding of the severity mechanisms and the establishment of novel treatments for severe asthma patients with obesity.
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Affiliation(s)
- Hiroki Tashiro
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan.
| | - Yuki Kurihara
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Yuki Kuwahara
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Koichiro Takahashi
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
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Yu H, Huang X, Zhu HH, Wang N, Xie C, Zhou YL, Shi HL, Chen MM, Wu YR, Ruan ZH, Lyu YB, Luo QL, Dong JC. Apigenin ameliorates non-eosinophilic inflammation, dysregulated immune homeostasis and mitochondria-mediated airway epithelial cell apoptosis in chronic obese asthma via the ROS-ASK1-MAPK pathway. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 111:154646. [PMID: 36645975 DOI: 10.1016/j.phymed.2023.154646] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 12/21/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
BACKGROUND Obese asthma is one of the important asthma phenotypes that have received wide attention in recent years. Excessive oxidative stress and different inflammatory endotypes may be important reasons for the complex symptoms, frequent aggravation, and resistance to traditional treatments of obese asthma. Apigenin (API), is a flavonoid natural small molecule compound with good anti-inflammatory and antioxidant activity in various diseases and proved to have the potential efficacy to combat obese asthma. METHODS In vivo, this study fed C57BL/6 J mice with high-fat diets(HFD)for 12 weeks and then stimulated them with OVA for 6 weeks to establish a model of chronic obese asthma, while different doses of oral API or dexamethasone were used for therapeutic interventions. In vitro, this study used HDM to stimulate human bronchial cells (HBEs) to establish the model and intervened with API or Selonsertib (SEL). RESULTS This study clarified that OVAinduced a type of mixed granulocytic asthma with elevated neutrophils and eosinophils in obese male mice fed with long-term HFD, which also exhibited mixed TH17/TH1/TH2 inflammation. Apigenin effectively suppressed this complex inflammation and acted as a regulator of immune homeostasis. Meanwhile, apigenin reduced AHR, inflammatory cell infiltration, airway epithelial cell apoptosis, airway collagen deposition, and lung oxidative stress via the ROS-ASK1-MAPK pathway in an obese asthma mouse model. In vitro, this study found that apigenin altered the binding status of TRAF6 to ASK1, inhibited ASK1 phosphorylation, and protected against ubiquitin-dependent degradation of ASK1, suggesting that ROS-activated ASK1 may be an important target for apigenin to exert anti-inflammatory and anti-apoptotic effects. To further verify the intervention mechanism, this study clarified that apigenin improved cell viability and mitochondrial function and inhibited apoptosis by interfering with the ROS-ASK1-MAPK pathway. CONCLUSIONS This study demonstrates for the first time the therapeutic effect of apigenin in chronic obese asthma and further clarifies its potential therapeutic targets. In addition, this study clarifies the specificity of chronic obese asthma and provides new options for its treatment.
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Affiliation(s)
- Hang Yu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Xi Huang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Hua-He Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Na Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Cong Xie
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yao-Long Zhou
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Han-Lin Shi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Meng-Meng Chen
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yue-Ren Wu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Zhen-Hui Ruan
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Yu-Bao Lyu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China
| | - Qing-Li Luo
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China; Shanghai Key Laboratory of Bioactive Small Molecules, Fudan University, Shanghai, China.
| | - Jing-Cheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, Shanghai, China; Institute of Integrative Medicine, Fudan University, Shanghai, China.
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Mank MM, Reed LF, Walton CJ, Barup MLT, Ather JL, Poynter ME. Therapeutic ketosis decreases methacholine hyperresponsiveness in mouse models of inherent obese asthma. Am J Physiol Lung Cell Mol Physiol 2022; 322:L243-L257. [PMID: 34936508 PMCID: PMC8782644 DOI: 10.1152/ajplung.00309.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 12/13/2021] [Accepted: 12/17/2021] [Indexed: 02/03/2023] Open
Abstract
Obese asthmatics tend to have severe, poorly controlled disease and exhibit methacholine hyperresponsiveness manifesting in proximal airway narrowing and distal lung tissue collapsibility. Substantial weight loss in obese asthmatics or in mouse models of the condition decreases methacholine hyperresponsiveness. Ketone bodies are rapidly elevated during weight loss, coinciding with or preceding relief from asthma-related comorbidities. As ketone bodies may exert numerous potentially therapeutic effects, augmenting their systemic concentrations is being targeted for the treatment of several conditions. Circulating ketone body levels can be increased by feeding a ketogenic diet or by providing a ketone ester dietary supplement, which we hypothesized would exert protective effects in mouse models of inherent obese asthma. Weight loss induced by feeding a low-fat diet to mice previously fed a high-fat diet was preceded by increased urine and blood levels of the ketone body β-hydroxybutyrate (BHB). Feeding a ketogenic diet for 3 wk to high-fat diet-fed obese mice or genetically obese db/db mice increased BHB concentrations and decreased methacholine hyperresponsiveness without substantially decreasing body weight. Acute ketone ester administration decreased methacholine responsiveness of normal mice, and dietary ketone ester supplementation of high-fat diet-fed mice decreased methacholine hyperresponsiveness. Ketone ester supplementation also transiently induced an "antiobesogenic" gut microbiome with a decreased Fermicutes/Bacteroidetes ratio. Dietary interventions to increase systemic BHB concentrations could provide symptom relief for obese asthmatics without the need for the substantial weight loss required of patients to elicit benefits to their asthma through bariatric surgery or other diet or lifestyle alterations.
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Affiliation(s)
- Madeleine M Mank
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Leah F Reed
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Camille J Walton
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Madison L T Barup
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Jennifer L Ather
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
| | - Matthew E Poynter
- Division of Pulmonary Disease and Critical Care, Department of Medicine, University of Vermont, Burlington, Vermont
- The Vermont Lung Center, Burlington, Vermont
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Michaeloudes C, Abubakar-Waziri H, Lakhdar R, Raby K, Dixey P, Adcock IM, Mumby S, Bhavsar PK, Chung KF. Molecular mechanisms of oxidative stress in asthma. Mol Aspects Med 2021; 85:101026. [PMID: 34625291 DOI: 10.1016/j.mam.2021.101026] [Citation(s) in RCA: 102] [Impact Index Per Article: 34.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 09/15/2021] [Indexed: 01/18/2023]
Abstract
The lungs are exposed to reactive oxygen species oxygen (ROS) produced as a result of inhalation of oxygen, as well as smoke and other air pollutants. Cell metabolism and the NADPH oxidases (Nox) generate low levels of intracellular ROS that act as signal transduction mediators by inducing oxidative modifications of histones, enzymes and transcription factors. Redox signalling is also regulated by localised production and sensing of ROS in mitochondria, the endoplasmic reticulum (ER) and inside the nucleus. Intracellular ROS are maintained at low levels through the action of a battery of enzymatic and non-enzymatic antioxidants. Asthma is a heterogeneous airway inflammatory disease with different immune endotypes; these include atopic or non-atopic Th2 type immune response associated with eosinophilia, or a non-Th2 response associated with neutrophilia. Airway remodelling and hyperresponsiveness accompany the inflammatory response in asthma. Over-production of ROS resulting from infiltrating immune cells, particularly eosinophils and neutrophils, and a concomitant impairment of antioxidant responses lead to development of oxidative stress in asthma. Oxidative stress is augmented in severe asthma and during exacerbations, as well as by air pollution and obesity, and causes oxidative damage of tissues promoting airway inflammation and hyperresponsiveness. Furthermore, deregulated Nox activity, mitochondrial dysfunction, ER stress and/or oxidative DNA damage, resulting from exposure to irritants, inflammatory mediators or obesity, may lead to redox-dependent changes in cell signalling. ROS play a central role in airway epithelium-mediated sensing, development of innate and adaptive immune responses, and airway remodelling and hyperresponsiveness. Nonetheless, antioxidant compounds have proven clinically ineffective as therapeutic agents for asthma, partly due to issues with stability and in vivo metabolism of these compounds. The compartmentalised nature of ROS production and sensing, and the role of ROS in homeostatic responses and in the action of corticosteroids and β2-adrenergic receptor agonists, adds another layer of complexity to antioxidant therapy development. Nox inhibitors and mitochondrial-targeted antioxidants are in clinical development for a number of diseases but they have not yet been investigated in asthma. A better understanding of the complex role of ROS in the pathogenesis of asthma will highlight new opportunities for more targeted and effective redox therapies.
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Affiliation(s)
- Charalambos Michaeloudes
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom.
| | - Hisham Abubakar-Waziri
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Ramzi Lakhdar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Katie Raby
- National Heart and Lung Institute, Imperial College London, London, United Kingdom
| | - Piers Dixey
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Ian M Adcock
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Sharon Mumby
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Pankaj K Bhavsar
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom
| | - Kian Fan Chung
- National Heart and Lung Institute, Imperial College London, London, United Kingdom; NIHR Imperial Biomedical Research Centre, United Kingdom; Royal Brompton & Harefield NHS Trust, London, UK
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6
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Enweasor C, Flayer CH, Haczku A. Ozone-Induced Oxidative Stress, Neutrophilic Airway Inflammation, and Glucocorticoid Resistance in Asthma. Front Immunol 2021; 12:631092. [PMID: 33717165 PMCID: PMC7952990 DOI: 10.3389/fimmu.2021.631092] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Accepted: 01/18/2021] [Indexed: 12/15/2022] Open
Abstract
Despite recent advances in using biologicals that target Th2 pathways, glucocorticoids form the mainstay of asthma treatment. Asthma morbidity and mortality remain high due to the wide variability of treatment responsiveness and complex clinical phenotypes driven by distinct underlying mechanisms. Emerging evidence suggests that inhalation of the toxic air pollutant, ozone, worsens asthma by impairing glucocorticoid responsiveness. This review discusses the role of oxidative stress in glucocorticoid resistance in asthma. The underlying mechanisms point to a central role of oxidative stress pathways. The primary data source for this review consisted of peer-reviewed publications on the impact of ozone on airway inflammation and glucocorticoid responsiveness indexed in PubMed. Our main search strategy focused on cross-referencing "asthma and glucocorticoid resistance" against "ozone, oxidative stress, alarmins, innate lymphoid, NK and γδ T cells, dendritic cells and alveolar type II epithelial cells, glucocorticoid receptor and transcription factors". Recent work was placed in the context from articles in the last 10 years and older seminal research papers and comprehensive reviews. We excluded papers that did not focus on respiratory injury in the setting of oxidative stress. The pathways discussed here have however wide clinical implications to pathologies associated with inflammation and oxidative stress and in which glucocorticoid treatment is essential.
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Affiliation(s)
- Chioma Enweasor
- UC Davis Lung Center, University of California, Davis, CA, United States
| | - Cameron H. Flayer
- Center for Immunology and Inflammatory Diseases, Division of Rheumatology, Allergy and Immunology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, United States
| | - Angela Haczku
- UC Davis Lung Center, University of California, Davis, CA, United States
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7
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Pal A, Gowdy KM, Oestreich KJ, Beck M, Shaikh SR. Obesity-Driven Deficiencies of Specialized Pro-resolving Mediators May Drive Adverse Outcomes During SARS-CoV-2 Infection. Front Immunol 2020; 11:1997. [PMID: 32983141 PMCID: PMC7438933 DOI: 10.3389/fimmu.2020.01997] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/23/2020] [Indexed: 12/15/2022] Open
Abstract
Obesity is a major independent risk factor for increased morbidity and mortality upon infection with Severe Acute Respiratory Syndrome Coronavirus (SARS-CoV-2), which is responsible for the current coronavirus disease pandemic (COVID-19). Therefore, there is a critical need to identify underlying metabolic factors associated with obesity that could be contributing toward increased susceptibility to SARS-CoV-2 in this vulnerable population. Here, we focus on the critical role of potent endogenous lipid metabolites known as specialized pro-resolving mediators (SPMs) that are synthesized from polyunsaturated fatty acids. SPMs are generated during the transition of inflammation to resolution and have a vital role in directing damaged tissues to homeostasis; furthermore, SPMs display anti-viral activity in the context of influenza infection without being immunosuppressive. We cover evidence from rodent and human studies to show that obesity, and its co-morbidities, induce a signature of SPM deficiency across immunometabolic tissues. We further discuss how the effects of obesity upon SARS-CoV-2 infection are likely exacerbated with environmental exposures that promote chronic pulmonary inflammation and augment SPM deficits. Finally, we highlight potential approaches to overcome the loss of SPMs using dietary and pharmacological interventions. Collectively, this mini-review underscores the need for mechanistic studies on how SPM deficiencies driven by obesity and environmental exposures may exacerbate the response to SARS-CoV-2.
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Affiliation(s)
- Anandita Pal
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Kymberly M. Gowdy
- Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University Wexner Medical Center, Davis Heart and Lung Research Institute, Columbus, OH, United States
| | - Kenneth J. Oestreich
- Department of Microbial Infection and Immunity, The Ohio State University College of Medicine and Wexner Medical Center, Columbus, OH, United States
| | - Melinda Beck
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Saame Raza Shaikh
- Department of Nutrition, Gillings School of Global Public Health and School of Medicine, The University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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Birukova A, Cyphert-Daly J, Cumming RI, Yu YR, Gowdy KM, Que LG, Tighe RM. Sex Modifies Acute Ozone-Mediated Airway Physiologic Responses. Toxicol Sci 2020; 169:499-510. [PMID: 30825310 DOI: 10.1093/toxsci/kfz056] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Sex differences clearly exist in incidence, susceptibility, and severity of airway disease and in pulmonary responses to air pollutants such as ozone (O3). Prior rodent O3 exposure studies demonstrate sex-related differences in the expression of lung inflammatory mediators and signaling. However, whether or not sex modifies O3-induced airway physiologic responses remains less explored. To address this, we exposed 8- to 10-week-old male and female C57BL/6 mice to either 1 or 2 ppm O3 or filtered air (FA) for 3 h. At 12, 24, 48, and 72 h following exposure, we assessed airway hyperresponsiveness to methacholine (MCh), bronchoalveolar lavage fluid cellularity, cytokines and total protein/albumin, serum progesterone, and whole lung immune cells by flow cytometry. Male mice generated consistent airway hyperresponsiveness to MCh at all time points following exposure. Alternatively, females had less consistent airway physiologic responses to MCh, which were more variable between individual experiments and did not correlate with serum progesterone levels. Bronchoalveolar lavage fluid total cells peaked at 12 h and were persistently elevated through 72 h. At 48 h, bronchoalveolar lavage cells were greater in females versus males. Bronchoalveolar lavage fluid cytokines and total protein/albumin increased following O3 exposure without sex differences. Flow cytometry of whole lung tissue identified dynamic O3-induced immune cell changes also independent of sex. Our results indicate sex differences in acute O3-induced airway physiology responses and airspace influx without significant difference in other injury and inflammation measures. This study highlights the importance of considering sex as a biological variable in acute O3-induced airway physiology responses.
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Affiliation(s)
| | | | | | - Yen-Rei Yu
- Department of Medicine, Duke University, Durham, North Carolina 27710
| | - Kymberly M Gowdy
- Department of Pharmacology and Toxicology, East Carolina University, Greenville, North Carolina 27858
| | - Loretta G Que
- Department of Medicine, Duke University, Durham, North Carolina 27710
| | - Robert M Tighe
- Department of Medicine, Duke University, Durham, North Carolina 27710
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Tashiro H, Cho Y, Kasahara DI, Brand JD, Bry L, Yeliseyev V, Abu-Ali G, Huttenhower C, Shore SA. Microbiota Contribute to Obesity-related Increases in the Pulmonary Response to Ozone. Am J Respir Cell Mol Biol 2019; 61:702-712. [PMID: 31144984 PMCID: PMC6890400 DOI: 10.1165/rcmb.2019-0144oc] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 05/28/2019] [Indexed: 12/12/2022] Open
Abstract
Obesity is a risk factor for asthma, especially nonatopic asthma, and attenuates the efficacy of standard asthma therapeutics. Obesity also augments pulmonary responses to ozone, a nonatopic asthma trigger. The purpose of this study was to determine whether obesity-related alterations in gut microbiota contribute to these augmented responses to ozone. Ozone-induced increases in airway responsiveness, a canonical feature of asthma, were greater in obese db/db mice than in lean wild-type control mice. Depletion of gut microbiota with a cocktail of antibiotics attenuated obesity-related increases in the response to ozone, indicating a role for microbiota. Moreover, ozone-induced airway hyperresponsiveness was greater in germ-free mice that had been reconstituted with colonic contents of db/db than in wild-type mice. In addition, compared with dietary supplementation with the nonfermentable fiber cellulose, dietary supplementation with the fermentable fiber pectin attenuated obesity-related increases in the pulmonary response to ozone, likely by reducing ozone-induced release of IL-17A. Our data indicate a role for microbiota in obesity-related increases in the response to an asthma trigger and suggest that microbiome-based therapies such as prebiotics may provide an alternative therapeutic strategy for obese patients with asthma.
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Affiliation(s)
| | | | | | | | - Lynn Bry
- Massachusetts Host Microbiome Center, Brigham and Women’s Hospital, Boston, Massachusetts; and
| | - Vladimir Yeliseyev
- Massachusetts Host Microbiome Center, Brigham and Women’s Hospital, Boston, Massachusetts; and
| | - Galeb Abu-Ali
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
- Broad Institute of MIT and Harvard, Cambridge, Massachusetts
| | - Curtis Huttenhower
- Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
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Michaudel C, Mackowiak C, Maillet I, Fauconnier L, Akdis CA, Sokolowska M, Dreher A, Tan HTT, Quesniaux VF, Ryffel B, Togbe D. Ozone exposure induces respiratory barrier biphasic injury and inflammation controlled by IL-33. J Allergy Clin Immunol 2018; 142:942-958. [DOI: 10.1016/j.jaci.2017.11.044] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Revised: 11/08/2017] [Accepted: 11/14/2017] [Indexed: 12/31/2022]
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11
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Mechanistic Basis for Obesity-related Increases in Ozone-induced Airway Hyperresponsiveness in Mice. Ann Am Thorac Soc 2018; 14:S357-S362. [PMID: 29161088 DOI: 10.1513/annalsats.201702-140aw] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Obesity is a risk factor for asthma, especially nonallergic asthma. Ozone, a common air pollutant, is a nonallergic asthma trigger. Importantly, ozone-induced decrements in lung function are greater in obese and overweight human subjects than in lean individuals. Obese mice also exhibit exaggerated pulmonary responses to ozone. Ozone causes greater increases in pulmonary resistance, in bronchoalveolar lavage neutrophils, and in airway hyperresponsiveness in obese than in lean mice. Our data indicate that IL-33 plays a role in mediating these events. Ozone causes greater release of IL-33 into bronchoalveolar lavage fluid in obese than in lean mice. Furthermore, an antibody blocking the IL-33 receptor, ST2, attenuates ozone-induced airway hyperresponsiveness in obese but not in lean mice. Our data also indicate a complex role for tumor necrosis factor (TNF)-α in obesity-related effects on the response to ozone. In obese mice, genetic deficiency in either TNF-α or TNF-α receptor 2 augments ozone-induced airway hyperresponsiveness, whereas TNF-α receptor 2 deficiency virtually abolishes ozone-induced airway hyperresponsiveness in lean mice. Finally, obesity is known to alter the gut microbiome. In female mice, antibiotics attenuate obesity-related increases in the effect of ozone on airway hyperresponsiveness, possibly by altering microbial production of short-chain fatty acids. Asthma control is often difficult to achieve in obese patients with asthma. Our data suggest that therapeutics directed against IL-33 may ultimately prove effective in these patients. The data also suggest that dietary manipulations and other strategies (prebiotics, probiotics) that alter the microbiome and/or its metabolic products may represent a new frontier for treating asthma in obese individuals.
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12
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Tashiro H, Takahashi K, Sadamatsu H, Kato G, Kurata K, Kimura S, Sueoka-Aragane N. Saturated Fatty Acid Increases Lung Macrophages and Augments House Dust Mite-Induced Airway Inflammation in Mice Fed with High-Fat Diet. Inflammation 2018; 40:1072-1086. [PMID: 28365872 PMCID: PMC5429367 DOI: 10.1007/s10753-017-0550-4] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Obesity is one of the phenotypes of severe asthma, which is considered to be a heterogeneous syndrome; however, its interaction with airway inflammation is not fully understood. The aim of this study was to clarify the role of saturated fatty acids in augmenting airway inflammation induced by house dust mite (HDM) in obesity. Subjects were Balb/c mice fed a high-fat diet (HFD) for 10 weeks, followed by sensitization and exposure to HDM. Subjects were also administered palmitic acid (PA) for 4 weeks with concurrent sensitization and exposure to HDM. Airway inflammation was assessed by quantifying the amount of inflammatory cells in bronchoalveolar lavage (BAL) and airway resistance was measured. In vitro, lipopolysaccharide (LPS)-primed macrophages were stimulated by PA. The amount of monocyte chemoattractant protein-1 (MCP-1), interleukin-1β (IL-1β), and tumor necrosis factor α (TNF-α) was examined in the supernatant. Compared to normal chow mice, HFD mice underwent significant increases in body weight; increases in number of lung macrophages, including circulating monocytes and alveolar macrophages; and increases in bronchoalveolar lavage fluid (BALF) total cell count, including neutrophils but not eosinophils, after HDM sensitization and exposure. In vitro, PA induced MCP-1 and augmented LPS-primed production of IL-1β and TNF-α in macrophages. Among HDM mice that were administered PA, there was an increase BALF total cell count, including neutrophils but not eosinophils, compared to vehicle mice. In conclusion, saturated fatty acid increased the number of lung macrophages and augmented HDM-induced neutrophilic airway inflammation in a HFD mouse model.
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Affiliation(s)
- Hiroki Tashiro
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Koichiro Takahashi
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan.
| | - Hironori Sadamatsu
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Go Kato
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Keigo Kurata
- Institute of Tokyo Environmental Allergy, Tokyo, Japan
| | - Shinya Kimura
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
| | - Naoko Sueoka-Aragane
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, 5-1-1 Nabeshima, Saga, 849-8501, Japan
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13
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Aquino-Junior JCJ, MacKenzie B, Almeida-Oliveira AR, Martins AC, Oliveira-Junior MC, Britto AA, Arantes-Costa FM, Damaceno-Rodrigues NR, Caldini EG, de Oliveira APL, Guadagnini D, Leiria LO, Ricardo DR, Abdalla Saad MJ, Vieira RP. Aerobic exercise inhibits obesity-induced respiratory phenotype. Cytokine 2018; 104:46-52. [PMID: 29454302 DOI: 10.1016/j.cyto.2017.12.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2017] [Revised: 12/09/2017] [Accepted: 12/22/2017] [Indexed: 12/24/2022]
Abstract
PURPOSE Obesity results in decreased lung function and increased inflammation. Moderate aerobic exercise (AE) reduced lung inflammation and remodeling in a variety of respiratory disease models. Therefore, this study investigated whether AE can attenuate a diet-induced obesity respiratory phenotype; including airway hyper-responsiveness (AHR), remodeling and inflammation. METHODS Sixty C57Bl/6 male mice were distributed into four groups: control lean (CL), exercise lean (EL), obese (O) and obese exercise (OE) groups (2 sets of 7 and 8 mice per group; n = 15). A classical model of diet-induced obesity (DIO) over 12 weeks was used. AE was performed 60 min/day, 5 days/week for 5 weeks. Airway hyperresponsiveness (AHR), lung inflammation and remodeling, adipokines and cytokines in bronchoalveolar lavage (BAL) was determined. RESULTS A high fat diet over 18 weeks significantly increased body weight (p < .0001). Five weeks of AE significantly reduced both AHR and pulmonary inflammation. AHR in obese mice that exercised was reduced at the basal level (p < .05), vehicle (PBS) (p < .05), 6.25 MCh mg/mL (p < .05), 12.5 MCh mg/mL (p < .01), 25 MCh mg/mL (p < .01) and 50 MCh mg/mL (p < .05). Collagen (p < .001) and elastic (p < .001) fiber deposition in airway wall and also smooth muscle thickness (p < .001) were reduced. The number of neutrophils (p < .001), macrophages (p < .001) and lymphocytes (p < .01) were reduced in the peribronchial space as well as in the BAL: lymphocytes (p < .01), macrophages (p < .01), neutrophils (p < .001). AE reduced obesity markers leptin (p < .001), IGF-1 (p < .01) and VEGF (p < .001), while increased adiponectin (p < .01) in BAL. AE also reduced pro-inflammatory cytokines in the BAL: IL-1β (p < .001), IL-12p40 (p < .001), IL-13 (p < .01), IL-17 (p < .001, IL-23 (p < .05) and TNF-alpha (p < .05), and increased anti-inflammatory cytokine IL-10 (p < .05). CONCLUSIONS Aerobic exercise reduces high fat diet-induced obese lung phenotype (AHR, pulmonary remodeling and inflammation), involving anti-inflammatory cytokine IL-10 and adiponectin.
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Affiliation(s)
| | - BreAnne MacKenzie
- Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), Rua Pedro Ernesto 240, Sao José dos Campos, SP 12245-520, Brazil
| | | | - Ana Carolina Martins
- Universidade Brasil, Rua Carolina Fonseca, 584 - Itaquera, São Paulo, SP 08230-030, Brazil
| | - Manoel Carneiro Oliveira-Junior
- Nove de Julho University, Rua Vergueiro 235/249, São Paulo, SP 01504-001, Brazil; Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), Rua Pedro Ernesto 240, Sao José dos Campos, SP 12245-520, Brazil
| | | | - Fernanda Magalhaes Arantes-Costa
- Laboratory of Experimental Therapeutics (LIM 20), School of Medicine, University of Sao Paulo (USP), Avenida Doutor Arnaldo 455, Cerqueira Cesar, Sao Paulo, SP 01246-903, Brazil
| | - Nilsa Regina Damaceno-Rodrigues
- Laboratory of Cellular Biology (LIM 59), School of Medicine, University of Sao Paulo (USP), Avenida Doutor Arnaldo 455, Cerqueira Cesar, Sao Paulo, SP 01246-903, Brazil
| | - Elia Garcia Caldini
- Laboratory of Cellular Biology (LIM 59), School of Medicine, University of Sao Paulo (USP), Avenida Doutor Arnaldo 455, Cerqueira Cesar, Sao Paulo, SP 01246-903, Brazil
| | - Ana Paula Ligeiro de Oliveira
- Nove de Julho University, Rua Vergueiro 235/249, São Paulo, SP 01504-001, Brazil; Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), Rua Pedro Ernesto 240, Sao José dos Campos, SP 12245-520, Brazil
| | - Dioze Guadagnini
- Department of Internal Medicine, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo 126, Cidade Universitária, Campinas, SP 13083-887, Brazil
| | - Luiz Osorio Leiria
- Department of Internal Medicine, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo 126, Cidade Universitária, Campinas, SP 13083-887, Brazil
| | - Djalma Rabelo Ricardo
- School of Medical Sciences of Sao Jose dos Campos Humanitas, Avenida Brigadeiro Faria Lima 811, Sao José dos Campos, SP 12227-000, Brazil
| | - Mario Jose Abdalla Saad
- Department of Internal Medicine, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo 126, Cidade Universitária, Campinas, SP 13083-887, Brazil
| | - Rodolfo Paula Vieira
- Brazilian Institute of Teaching and Research in Pulmonary and Exercise Immunology (IBEPIPE), Rua Pedro Ernesto 240, Sao José dos Campos, SP 12245-520, Brazil; School of Medical Sciences of Sao Jose dos Campos Humanitas, Avenida Brigadeiro Faria Lima 811, Sao José dos Campos, SP 12227-000, Brazil; Universidade Brasil, Rua Carolina Fonseca, 584 - Itaquera, São Paulo, SP 08230-030, Brazil.
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14
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Thermoneutral housing temperature regulates T-regulatory cell function and inhibits ovabumin-induced asthma development in mice. Sci Rep 2017; 7:7123. [PMID: 28769099 PMCID: PMC5540912 DOI: 10.1038/s41598-017-07471-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 06/27/2017] [Indexed: 12/12/2022] Open
Abstract
The change in ambient temperature is one of the risk factors for the aggravation of bronchial asthma (BA). Yet, whether the ambient temperature influences the immune functions associated with allergic asthma remains unknown. In this study, we treated asthmatic mice with standard temperature (ST, 20 °C) or thermoneutral temperature (TT, 30 °C). The results showed that the airway inflammatory cell counts in bronchoalveolar lavage fluid (BALF) and airway hyperresponsiveness (AHR) were significantly reduced in the mice treated with TT as compared with the mice treated with ST. The imbalance of Th1/Th2 response in the lung was improved following housing the mice at TT. In addition, the pulmonary Treg cells were increased in asthmatic mice after TT treatment. The temperature stress (29 °C and 41 °C) drove naïve CD4T cells towards Th2 cells. Our data demonstrate that the change of ambient temperature was a risk factor to aggravate experimental asthma.
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15
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Peters U, Suratt BT, Bates JHT, Dixon AE. Beyond BMI: Obesity and Lung Disease. Chest 2017; 153:702-709. [PMID: 28728934 DOI: 10.1016/j.chest.2017.07.010] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Revised: 06/19/2017] [Accepted: 07/06/2017] [Indexed: 12/12/2022] Open
Abstract
The worldwide prevalence of obesity has increased rapidly in the last 3 decades, and this increase has led to important changes in the pathogenesis and clinical presentation of many common diseases. This review article examines the relationship between obesity and lung disease, highlighting some of the major findings that have advanced our understanding of the mechanisms contributing to this relationship. Changes in pulmonary function related to fat mass are important, but obesity is much more than simply a state of mass loading, and BMI is only a very indirect measure of metabolic health. The obese state is associated with changes in the gut microbiome, cellular metabolism, lipid handling, immune function, insulin resistance, and circulating factors produced by adipose tissue. Together, these factors can fundamentally alter the pathogenesis and pathophysiology of lung health and disease.
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16
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Dixon AE, Poynter ME. Mechanisms of Asthma in Obesity. Pleiotropic Aspects of Obesity Produce Distinct Asthma Phenotypes. Am J Respir Cell Mol Biol 2017; 54:601-8. [PMID: 26886277 DOI: 10.1165/rcmb.2016-0017ps] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
The majority of patients with severe or difficult-to-control asthma in the United States are obese. Epidemiological studies have clearly established that obese patients tend to have worse asthma control and increased hospitalizations and do not respond to standard controller therapy as well as lean patients with asthma. Less clear are the mechanistic underpinnings for the striking clinical differences between lean and obese patients with asthma. Because obesity is principally a disorder of metabolism and energy regulation, processes fundamental to the function of every cell and system within the body, it is not surprising that it affects the respiratory system; it is perhaps surprising that it has taken so long to appreciate how dysfunctional metabolism and energy regulation lead to severe airway disease. Although early investigations focused on identifying a common factor in obesity that could promote airway disease, an appreciation has emerged that the asthma of obesity is a manifestation of multiple anomalies related to obesity affecting all the different pathways that cause asthma, and likely also to de novo airway dysfunction. Consequently, all the phenotypes of asthma currently recognized in lean patients (which are profoundly modified by obesity), as well as those unique to one's obesity endotype, likely contribute to obese asthma in a particular individual. This perspective reviews what we have learned from clinical studies and animal models about the phenotypes of asthma in obesity, which show how specific aspects of obesity and altered metabolism might lead to de novo airway disease and profoundly modify existing airway disease.
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Affiliation(s)
- Anne E Dixon
- Department of Medicine, University of Vermont, Burlington, Vermont
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17
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Ubags NDJ, Burg E, Antkowiak M, Wallace AM, Dilli E, Bement J, Wargo MJ, Poynter ME, Wouters EFM, Suratt BT. A Comparative Study of Lung Host Defense in Murine Obesity Models. Insights into Neutrophil Function. Am J Respir Cell Mol Biol 2017; 55:188-200. [PMID: 27128821 DOI: 10.1165/rcmb.2016-0042oc] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
We have shown that obesity-associated attenuation of murine acute lung injury is driven, in part, by blunted neutrophil chemotaxis, yet differences were noted between the two models of obesity studied. We hypothesized that obesity-associated impairment of multiple neutrophil functions contributes to increased risk for respiratory infection but that such impairments may vary between murine models of obesity. We examined the most commonly used murine obesity models (diet-induced obesity, db/db, CPE(fat/fat), and ob/ob) using a Klebsiella pneumoniae pneumonia model and LPS-induced pneumonitis. Marrow-derived neutrophils from uninjured lean and obese mice were examined for in vitro functional responses. All obesity models showed impaired clearance of K. pneumoniae, but in differing temporal patterns. Failure to contain infection in obese mice was seen in the db/db model at both 24 and 48 hours, yet this defect was only evident at 24 hours in CPE(fat/fat) and ob/ob models, and at 48 hours in diet-induced obesity. LPS-induced airspace neutrophilia was decreased in all models, and associated with blood neutropenia in the ob/ob model but with leukocytosis in the others. Obese mouse neutrophils from all models demonstrated impaired chemotaxis, whereas neutrophil granulocyte colony-stimulating factor-mediated survival, LPS-induced cytokine transcription, and mitogen-activated protein kinase and signal transducer and activator of transcription 3 activation in response to LPS and granulocyte colony-stimulating factor, respectively, were variably impaired across the four models. Obesity-associated impairment of host response to lung infection is characterized by defects in neutrophil recruitment and survival. However, critical differences exist between commonly used mouse models of obesity and may reflect variable penetrance of elements of the metabolic syndrome, as well as other factors.
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Affiliation(s)
- Niki D J Ubags
- 1 Department of Respiratory Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, the Netherlands; and.,Departments of 2 Medicine and
| | | | | | | | | | | | - Matthew J Wargo
- 3 Microbiology and Molecular Genetics, University of Vermont College of Medicine, Burlington, Vermont
| | | | - Emiel F M Wouters
- 1 Department of Respiratory Medicine, School of Nutrition and Translational Research in Metabolism, Maastricht University Medical Centre, Maastricht, the Netherlands; and
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18
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Mathews JA, Krishnamoorthy N, Kasahara DI, Cho Y, Wurmbrand AP, Ribeiro L, Smith D, Umetsu D, Levy BD, Shore SA. IL-33 Drives Augmented Responses to Ozone in Obese Mice. ENVIRONMENTAL HEALTH PERSPECTIVES 2017; 125:246-253. [PMID: 27472835 PMCID: PMC5289908 DOI: 10.1289/ehp272] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2015] [Revised: 02/23/2016] [Accepted: 06/07/2016] [Indexed: 05/02/2023]
Abstract
BACKGROUND Ozone increases IL-33 in the lungs, and obesity augments the pulmonary effects of acute ozone exposure. OBJECTIVES We assessed the role of IL-33 in the augmented effects of ozone observed in obese mice. METHODS Lean wildtype and obese db/db mice were pretreated with antibodies blocking the IL-33 receptor, ST2, and then exposed to ozone (2 ppm for 3 hr). Airway responsiveness was assessed, bronchoalveolar lavage (BAL) was performed, and lung cells harvested for flow cytometry 24 hr later. Effects of ozone were also assessed in obese and lean mice deficient in γδ T cells and their wildtype controls. RESULTS AND DISCUSSION Ozone caused greater increases in BAL IL-33, neutrophils, and airway responsiveness in obese than lean mice. Anti-ST2 reduced ozone-induced airway hyperresponsiveness and inflammation in obese mice but had no effect in lean mice. Obesity also augmented ozone-induced increases in BAL CXCL1 and IL-6, and in BAL type 2 cytokines, whereas anti-ST2 treatment reduced these cytokines. In obese mice, ozone increased lung IL-13+ innate lymphoid cells type 2 (ILC2) and IL-13+ γδ T cells. Ozone increased ST2+ γδ T cells, indicating that these cells can be targets of IL-33, and γδ T cell deficiency reduced obesity-related increases in the response to ozone, including increases in type 2 cytokines. CONCLUSIONS Our data indicate that IL-33 contributes to augmented responses to ozone in obese mice. Obesity and ozone also interacted to promote type 2 cytokine production in γδ T cells and ILC2 in the lungs, which may contribute to the observed effects of IL-33. Citation: Mathews JA, Krishnamoorthy N, Kasahara DI, Cho Y, Wurmbrand AP, Ribeiro L, Smith D, Umetsu D, Levy BD, Shore SA. 2017. IL-33 drives augmented responses to ozone in obese mice. Environ Health Perspect 125:246-253; http://dx.doi.org/10.1289/EHP272.
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Affiliation(s)
- Joel A. Mathews
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
- Address correspondence to J.A. Mathews, Molecular and Integrative Physiological Sciences Program, Department of Environmental Health, Harvard School of Public Health, 665 Huntington Ave., Boston, MA 02115-6021 USA. Telephone: (617) 432-0989. E-mail:
| | - Nandini Krishnamoorthy
- Pulmonary and Critical Care Medicine, Harvard Institutes of Medicine Building, Boston, Massachusetts, USA
| | - David Itiro Kasahara
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Youngji Cho
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Allison Patricia Wurmbrand
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Luiza Ribeiro
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
| | - Dirk Smith
- Department of Inflammation Research, Amgen, Seattle, Washington, USA
| | - Dale Umetsu
- Genentech, South San Francisco, California, USA
| | - Bruce D. Levy
- Pulmonary and Critical Care Medicine, Harvard Institutes of Medicine Building, Boston, Massachusetts, USA
| | - Stephanie Ann Shore
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, Massachusetts, USA
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19
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Prakash YS. Emerging concepts in smooth muscle contributions to airway structure and function: implications for health and disease. Am J Physiol Lung Cell Mol Physiol 2016; 311:L1113-L1140. [PMID: 27742732 DOI: 10.1152/ajplung.00370.2016] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Accepted: 10/06/2016] [Indexed: 12/15/2022] Open
Abstract
Airway structure and function are key aspects of normal lung development, growth, and aging, as well as of lung responses to the environment and the pathophysiology of important diseases such as asthma, chronic obstructive pulmonary disease, and fibrosis. In this regard, the contributions of airway smooth muscle (ASM) are both functional, in the context of airway contractility and relaxation, as well as synthetic, involving production and modulation of extracellular components, modulation of the local immune environment, cellular contribution to airway structure, and, finally, interactions with other airway cell types such as epithelium, fibroblasts, and nerves. These ASM contributions are now found to be critical in airway hyperresponsiveness and remodeling that occur in lung diseases. This review emphasizes established and recent discoveries that underline the central role of ASM and sets the stage for future research toward understanding how ASM plays a central role by being both upstream and downstream in the many interactive processes that determine airway structure and function in health and disease.
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Affiliation(s)
- Y S Prakash
- Departments of Anesthesiology, and Physiology & Biomedical Engineering, Mayo Clinic, Rochester, Minnesota
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20
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Umetsu DT. Mechanisms by which obesity impacts upon asthma. Thorax 2016; 72:174-177. [DOI: 10.1136/thoraxjnl-2016-209130] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2016] [Accepted: 08/24/2016] [Indexed: 01/19/2023]
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21
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Garantziotis S, Li Z, Potts EN, Kimata K, Zhuo L, Morgan DL, Savani RC, Noble PW, Foster WM, Schwartz DA, Hollingsworth JW. Hyaluronan mediates ozone-induced airway hyperresponsiveness in mice. J Biol Chem 2016; 291:19257-8. [PMID: 27613954 DOI: 10.1074/jbc.a116.802400] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
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22
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Zychowski KE, Lucas SN, Sanchez B, Herbert G, Campen MJ. Hypoxia-induced pulmonary arterial hypertension augments lung injury and airway reactivity caused by ozone exposure. Toxicol Appl Pharmacol 2016; 305:40-45. [PMID: 27286659 DOI: 10.1016/j.taap.2016.06.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 05/10/2016] [Accepted: 06/03/2016] [Indexed: 11/29/2022]
Abstract
Ozone (O3)-related cardiorespiratory effects are a growing public health concern. Ground level O3 can exacerbate pre-existing respiratory conditions; however, research regarding therapeutic interventions to reduce O3-induced lung injury is limited. In patients with chronic obstructive pulmonary disease, hypoxia-associated pulmonary hypertension (HPH) is a frequent comorbidity that is difficult to treat clinically, yet associated with increased mortality and frequency of exacerbations. In this study, we hypothesized that established HPH would confer vulnerability to acute O3 pulmonary toxicity. Additionally, we tested whether improvement of pulmonary endothelial barrier integrity via rho-kinase inhibition could mitigate pulmonary inflammation and injury. To determine if O3 exacerbated HPH, male C57BL/6 mice were subject to either 3 weeks continuous normoxia (20.9% O2) or hypoxia (10.0% O2), followed by a 4-h exposure to either 1ppm O3 or filtered air (FA). As an additional experimental intervention fasudil (20mg/kg) was administered intraperitoneally prior to and after O3 exposures. As expected, hypoxia significantly increased right ventricular pressure and hypertrophy. O3 exposure in normoxic mice caused lung inflammation but not injury, as indicated by increased cellularity and edema in the lung. However, in hypoxic mice, O3 exposure led to increased inflammation and edema, along with a profound increase in airway hyperresponsiveness to methacholine. Fasudil administration resulted in reduced O3-induced lung injury via the enhancement of pulmonary endothelial barrier integrity. These results indicate that increased pulmonary vascular pressure may enhance lung injury, inflammation and edema when exposed to pollutants, and that enhancement of pulmonary endothelial barrier integrity may alleviate such vulnerability.
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Affiliation(s)
- Katherine E Zychowski
- Department of Pharmaceutical Sciences, University of New Mexico College of Pharmacy, Albuquerque, NM 87131, United States
| | - Selita N Lucas
- Department of Pharmaceutical Sciences, University of New Mexico College of Pharmacy, Albuquerque, NM 87131, United States
| | - Bethany Sanchez
- Department of Pharmaceutical Sciences, University of New Mexico College of Pharmacy, Albuquerque, NM 87131, United States
| | - Guy Herbert
- Department of Pharmaceutical Sciences, University of New Mexico College of Pharmacy, Albuquerque, NM 87131, United States
| | - Matthew J Campen
- Department of Pharmaceutical Sciences, University of New Mexico College of Pharmacy, Albuquerque, NM 87131, United States.
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23
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Nigro E, Matteis M, Roviezzo F, Mattera Iacono V, Scudiero O, Spaziano G, Tartaglione G, Urbanek K, Filosa R, Daniele A, D'Agostino B. Role of adiponectin in sphingosine-1-phosphate induced airway hyperresponsiveness and inflammation. Pharmacol Res 2015; 103:114-22. [PMID: 26462929 DOI: 10.1016/j.phrs.2015.10.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 09/24/2015] [Accepted: 10/05/2015] [Indexed: 12/15/2022]
Abstract
Epidemiological data suggest that obesity represent an important risk factor for asthma, but the link between excess fat and airway hyperresponsiveness (AHR) and inflammation is not fully understood. Recently, a key role in physiopathologic conditions of lungs has been given to adiponectin (Acrp30). Acrp30 is one of the most expressed adipokines produced and secreted by adipose tissue, showing an intriguing relationship with metabolism of sphingolipids. Sphingosine-1-phosphate (S1P) has been proposed as an important inflammatory mediator implicated in the pathogenesis of airway inflammation and asthma. In the present study we analyze the effects of recombinant Acrp30 administration in an experimental model of S1P-induced AHR and inflammation. The results show that S1P is able to reduce endogenous Acrp30 serum levels and that recombinant Acrp30 treatment significantly reduce S1P-induced AHR and inflammation. Moreover, we observed a reduction of Adiponectin receptors (AdipoR1, AdipoR2 and T-cadherin) expression in S1P treated mice. Treatment with recombinant Acrp30 was able to restore Acrp30 serum levels and adiponectin receptors expression. These results could indicate the ability of S1P to modulate the Acrp30 action, by modulating not only the serum levels of the protein, but also its receptors. Taken together, these data suggest that adiponectin could represent a possible biomarker in obesity-associated asthma.
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Affiliation(s)
- Ersilia Nigro
- CEINGE-Advanced Biotechnology s.c.ar.l, Naples, Italy
| | - Maria Matteis
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Fiorentina Roviezzo
- Department of Experimental Pharmacology, University Federico II of Naples, Naples, Italy
| | | | - Olga Scudiero
- CEINGE-Advanced Biotechnology s.c.ar.l, Naples, Italy; Department of Molecular Medicine and Medical Biotechnology, University Federico II of Naples, Naples, Italy
| | - Giuseppe Spaziano
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Gioia Tartaglione
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Konrad Urbanek
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Rosanna Filosa
- Department of Experimental Medicine, Second University of Naples, Naples, Italy
| | - Aurora Daniele
- CEINGE-Advanced Biotechnology s.c.ar.l, Naples, Italy; Department of Environmental Sciences and Technologies Biological and Pharmaceutical, Second University of Naples, Caserta, Italy
| | - Bruno D'Agostino
- Department of Experimental Medicine, Second University of Naples, Naples, Italy.
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