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Muralidharan A, Bauer CD, Katafiasz DM, Strah HM, Siddique A, Reid SP, Bailey KL, Wyatt TA. Synergistic Detrimental Effects of Cigarette Smoke, Alcohol, and SARS-CoV-2 in COPD Bronchial Epithelial Cells. Pathogens 2023; 12:498. [PMID: 36986420 PMCID: PMC10056639 DOI: 10.3390/pathogens12030498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/09/2023] [Accepted: 03/20/2023] [Indexed: 03/30/2023] Open
Abstract
Lung conditions such as COPD, as well as risk factors such as alcohol misuse and cigarette smoking, can exacerbate COVID-19 disease severity. Synergistically, these risk factors can have a significant impact on immunity against pathogens. Here, we studied the effect of a short exposure to alcohol and/or cigarette smoke extract (CSE) in vitro on acute SARS-CoV-2 infection of ciliated human bronchial epithelial cells (HBECs) collected from healthy and COPD donors. We observed an increase in viral titer in CSE- or alcohol-treated COPD HBECs compared to untreated COPD HBECs. Furthermore, we treated healthy HBECs accompanied by enhanced lactate dehydrogenase activity, indicating exacerbated injury. Finally, IL-8 secretion was elevated due to the synergistic damage mediated by alcohol, CSE, and SARS-CoV-2 in COPD HBECs. Together, our data suggest that, with pre-existing COPD, short exposure to alcohol or CSE is sufficient to exacerbate SARS-CoV-2 infection and associated injury, impairing lung defences.
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Affiliation(s)
- Abenaya Muralidharan
- Department of Pathology and Microbiology, College of Medicine, The University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Christopher D. Bauer
- Pulmonary, Critical Care, and Sleep Medicine Division, Department of Internal Medicine, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Dawn M. Katafiasz
- Pulmonary, Critical Care, and Sleep Medicine Division, Department of Internal Medicine, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Heather M. Strah
- Pulmonary, Critical Care, and Sleep Medicine Division, Department of Internal Medicine, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Aleem Siddique
- Department of Surgery, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - St Patrick Reid
- Department of Pathology and Microbiology, College of Medicine, The University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Kristina L. Bailey
- Pulmonary, Critical Care, and Sleep Medicine Division, Department of Internal Medicine, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
| | - Todd A. Wyatt
- Pulmonary, Critical Care, and Sleep Medicine Division, Department of Internal Medicine, College of Medicine, the University of Nebraska Medical Center, Omaha, NE 68198, USA
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA
- Department of Environmental, Agricultural & Occupational Health, College of Public Health, the University of Nebraska Medical Center, Omaha, NE 68198, USA
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Murgia N, Gambelunghe A. Occupational COPD-The most under-recognized occupational lung disease? Respirology 2022; 27:399-410. [PMID: 35513770 PMCID: PMC9321745 DOI: 10.1111/resp.14272] [Citation(s) in RCA: 28] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 03/16/2022] [Accepted: 04/19/2022] [Indexed: 11/29/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is caused by exposure to noxious particles and gases. Smoking is the main risk factor, but other factors are also associated with COPD. Occupational exposure to vapours, gases, dusts and fumes contributes to the development and progression of COPD, accounting for a population attributable fraction of 14%. Workplace pollutants, in particular inorganic dust, can initiate airway damage and inflammation, which are the hallmarks of COPD pathogenesis. Occupational COPD is still underdiagnosed, mainly due to the challenges of assessing the occupational component of the disease in clinical settings, especially if other risk factors are present. There is a need for specific education and training for clinicians, and research with a focus on evaluating the role of occupational exposure in causing COPD. Early diagnosis and identification of occupational causes is very important to prevent further decline in lung function and to reduce the health and socio-economic burden of COPD. Establishing details of the occupational history by general practitioners or respiratory physicians could help to define the occupational burden of COPD for individual patients, providing the first useful interventions (smoking cessation, best therapeutic management, etc.). Once patients are diagnosed with occupational COPD, there is a wide international variation in access to specialist occupational medicine and public health services, along with limitations in workplace and income support. Therefore, a strong collaboration between primary care physicians, respiratory physicians and occupational medicine specialists is desirable to help manage COPD patients' health and social issues.
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Affiliation(s)
- Nicola Murgia
- Section of Occupational Medicine, Respiratory Diseases and Toxicology, University of Perugia, Perugia, Italy
| | - Angela Gambelunghe
- Section of Occupational Medicine, Respiratory Diseases and Toxicology, University of Perugia, Perugia, Italy
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Shen Y, Ma J, Jiang J, Chen Z, Yan W, Wang Y, Wang F, Liu L. Treatment of adhesions after Achilles tendon injury using focused ultrasound with targeted bFGF plasmid-loaded cationic microbubbles. OPEN CHEM 2020. [DOI: 10.1515/chem-2020-0110] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
AbstractNonviral targeting technology has become promising as a form of gene therapy for diseases and injuries, such as Achilles tendon injuries. In this study, we used avidin–biotin bridge and positive–negative charge attractions to load the intercellular adhesion molecule-1 (ICAM-1) antibody and the basic fibroblast growth factor (bFGF) plasmid onto the surface of the microbubbles. The saturated loading capacity for 1.1 × 108 microbubble was 6.55 ± 0.53 µg. We established the ICAM-1 antigen microenvironment using tumor necrosis factor-alpha-stimulated human umbilical vein endothelial cells and found the targeting ability of the prepared microbubbles in vitro. In vivo, we also found that the injected targeted bFGF gene microbubbles expressed the bFGF gene better when compared with that of the control group. Furthermore, we evaluated adhesions after Achilles tendon injuries in rabbits using hematoxylin and eosin and immunohistochemical (IHC) staining methods. The collagen fibers were properly arranged in the tendon, and there was greater cellularity inside the tendon sheath and a clearer boundary between the internal and external tendon sheath than that of the control group. IHC staining showed greater ICAM-1 expression inside the tendon sheath when compared with outside the tendon sheath. In conclusion, targeted microbubbles can be a useful carrier of genes to provide gene therapy for the prevention of adhesions after tendon injury.
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Affiliation(s)
- Yuzhou Shen
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
| | - Jiancheng Ma
- Department of Ultrasound, Huizhou Municipal Central Hospital, Huizhou 516002, China
| | - Junsheng Jiang
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
| | - Zhilin Chen
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
| | - Wenzhu Yan
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
| | - Yue Wang
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
| | - Feng Wang
- Henan Key Laboratory of Medical Tissue Regeneration, School of Basic Medical Sciences, Xinxiang Medical University, 601 Jinsui Road, Henan, Xinxiang 453002, China
| | - Li Liu
- Department of Ultrasound, Peking University Shenzhen Hospital, 1120 Lian-Hua Road, Guangdong, Shenzhen 518036, China
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Bailey KL, Smith LM, Heires AJ, Katafiasz DM, Romberger DJ, LeVan TD. Aging leads to dysfunctional innate immune responses to TLR2 and TLR4 agonists. Aging Clin Exp Res 2019; 31:1185-1193. [PMID: 30402800 PMCID: PMC6504629 DOI: 10.1007/s40520-018-1064-0] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Accepted: 10/24/2018] [Indexed: 01/31/2023]
Abstract
BACKGROUND Sepsis is more common in the elderly. TNF⍺ is recognized as an important mediator in sepsis and Toll-like receptors (TLRs) play an important role in initiating signaling cascades to produce TNF⍺. Little is known about how innate immunity is altered in healthy human aging that predisposes to sepsis. AIMS AND METHODS We tested the hypothesis that aging dysregulates the innate immune response to TLR 2 and 4 ligands. We performed whole blood assays on 554 healthy subjects aged 40-80 years. TNFα production was measured at baseline and after stimulation with the TLR2 agonists: peptidoglycan, lipoteichoic acid, Pam3CysK, Zymosan A and the TLR4 agonist lipopolysaccharide (LPS). In a subset of subjects (n = 250), we measured Toll-like receptor (TLR) 2, 4 and MyD88 expression using real-time PCR. RESULTS AND DISCUSSION We measured a 2.5% increase per year in basal secretion of TNFα with aging (n = 554 p = 0.02). Likewise, TNFα secretion was increased with aging after stimulation with peptidoglycan (1.3% increase/year; p = 0.0005) and zymosan A (1.1% increase/year p = 0.03). We also examined the difference between baseline and stimulated TNFα for each individual. We found that the increase was driven by the elevated baseline levels. In fact, there was a diminished stimulated response to LPS (1.9% decrease/year; p = 0.05), lipoteichoic acid (2.1% decrease/year p = 0.03), and Pam3CysK (2.6% decrease/year p = 0.0007). There were no differences in TLR or MyD88 mRNA expression with aging, however, there was an inverse relationship between TLR expression and stimulated TNFα production. CONCLUSIONS With aging, circulating leukocytes produce high levels of TNFα at baseline and have inadequate responses to TLR2 and TLR4 agonists. These defects likely contribute to the increased susceptibility to sepsis in older adults.
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Affiliation(s)
- Kristina L Bailey
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA.
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA.
| | - Lynette M Smith
- Department of Biostatistics, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Art J Heires
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
| | - Dawn M Katafiasz
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA
| | - Debra J Romberger
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
| | - Tricia D LeVan
- Division of Pulmonary, Critical Care, Sleep and Allergy, Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE, 68198-5910, USA
- VA Nebraska-Western Iowa Health Care System, Omaha, NE, 68105, USA
- Department of Epidemiology, University of Nebraska Medical Center, Omaha, NE, 68198, USA
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Nordgren TM, Heires AJ, Bailey KL, Katafiasz DM, Toews ML, Wichman CS, Romberger DJ. Docosahexaenoic acid enhances amphiregulin-mediated bronchial epithelial cell repair processes following organic dust exposure. Am J Physiol Lung Cell Mol Physiol 2017; 314:L421-L431. [PMID: 29097425 DOI: 10.1152/ajplung.00273.2017] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Injurious dust exposures in the agricultural workplace involve the release of inflammatory mediators and activation of epidermal growth factor receptor (EGFR) in the respiratory epithelium. Amphiregulin (AREG), an EGFR ligand, mediates tissue repair and wound healing in the lung epithelium. Omega-3 fatty acids such as docosahexaenoic acid (DHA) are also known modulators of repair and resolution of inflammatory injury. This study investigated how AREG, DHA, and EGFR modulate lung repair processes following dust-induced injury. Primary human bronchial epithelial (BEC) and BEAS-2B cells were treated with an aqueous extract of swine confinement facility dust (DE) in the presence of DHA and AREG or EGFR inhibitors. Mice were exposed to DE intranasally with or without EGFR inhibition and DHA. Using a decellularized lung scaffolding tissue repair model, BEC recolonization of human lung scaffolds was analyzed in the context of DE, DHA, and AREG treatments. Through these investigations, we identified an important role for AREG in mediating BEC repair processes. DE-induced AREG release from BEC, and DHA treatment following DE exposure, enhanced this release. Both DHA and AREG also enhanced BEC repair capacities and rescued DE-induced recellularization deficits. In vivo, DHA treatment enhanced AREG production following DE exposure, whereas EGFR inhibitor-treated mice exhibited reduced AREG in their lung homogenates. These data indicate a role for AREG in the process of tissue repair after inflammatory lung injury caused by environmental dust exposure and implicate a role for DHA in regulating AREG-mediated repair signaling in BEC.
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Affiliation(s)
- Tara M Nordgren
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska.,Division of Biomedical Sciences, School of Medicine, University of California Riverside , Riverside, California
| | - Art J Heires
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
| | - Kristina L Bailey
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska.,Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
| | - Dawn M Katafiasz
- Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
| | - Myron L Toews
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center , Omaha, Nebraska
| | - Christopher S Wichman
- Department of Biostatistics, University of Nebraska Medical Center , Omaha, Nebraska
| | - Debra J Romberger
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, Nebraska.,Pulmonary, Critical Care, Sleep and Allergy Division, Department of Internal Medicine, University of Nebraska Medical Center , Omaha, Nebraska
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