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Lin H, Yan Y, Deng C, Sun N. Engineered Bimetallic MOF-Crafted Bullet Aids in Penetrating Serum Metabolic Traits of Chronic Obstructive Pulmonary Disease. Anal Chem 2024. [PMID: 39208069 DOI: 10.1021/acs.analchem.4c03681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2024]
Abstract
Metabolomics analysis based on body fluids, combined with high-throughput laser desorption and ionization mass spectrometry (LDI-MS), holds great potential and promising prospects for disease diagnosis and screening. On the other hand, chronic obstructive pulmonary disease (COPD) currently lacks innovative and powerful diagnostic and screening methods. In this work, CoFeNMOF-D, a metal-organic framework (MOF)-derived metal oxide nanomaterial, was synthesized and utilized as a matrix to assist LDI-MS for extracting serum metabolic fingerprints of COPD patients and healthy controls (HC). Through machine learning algorithms, successful discrimination between the COPD and HC was achieved. Furthermore, four potential biomarkers significantly downregulated in COPD were screened out. The disease diagnostic models based on the biomarkers demonstrated excellent diagnostic performance across different algorithms, with area under the curve (AUC) values reaching 0.931 and 0.978 in the training and validation sets, respectively. Finally, the potential metabolic pathways and disease mechanisms associated with the identified markers were explored. This work advances the application of LDI-based molecular diagnostics in clinical settings.
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Affiliation(s)
- Hairu Lin
- Department of Chemistry, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200433, China
| | - Yinghua Yan
- School of Materials Science and Chemical Engineering, Ningbo University, Ningbo 315211, China
| | - Chunhui Deng
- Department of Chemistry, Institutes of Biomedical Sciences, Zhongshan Hospital, Fudan University, Shanghai 200433, China
- School of Chemistry and Chemical Engineering, Nanchang University, Nanchang 330031, China
| | - Nianrong Sun
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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2
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Lian H, Zhu L, Li M, Feng S, Gao F, Zhang X, Zhang F, Xi Y, Xiang X. Emerging threat of marine microplastics: Cigarette butt contamination on Yellow Sea beaches and the potential toxicity risks to rotifer growth and reproduction. JOURNAL OF HAZARDOUS MATERIALS 2024; 478:135534. [PMID: 39151359 DOI: 10.1016/j.jhazmat.2024.135534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2024] [Revised: 08/12/2024] [Accepted: 08/13/2024] [Indexed: 08/19/2024]
Abstract
Cigarette butts have become one of the most common and persistent forms of debris in marine coastal areas, where they pose significant toxicity risks. This study investigated cigarette butt pollution along beaches of the Yellow Sea and used laboratory experiments to assess the toxicity of their leachate and fibers on the euryhaline rotifer Brachionus plicatilis. A pollution index confirmed pollution by this debris across all eight beaches surveyed, where the density of cigarette butts averaged 0.23 butts/m2. In controlled laboratory experiments, both the fibers and leachates from cigarette butts exhibited negative impacts on the development, reproduction, and population growth of rotifers. Unique abnormalities observed under different exposure treatments indicated toxicity specific to certain chemicals and particles. Continuous exposure to cigarette butts initially reduced rotifer fecundity, but this effect diminished over successive generations. However, the exposure induced transgenerational reproductive toxicity in the rotifers. Adaptive responses in rotifers after repeated exposure led to relative reduction in reproductive inhibition in the F3 and F4 generations. Furthermore, rotifers were capable of ingesting and accumulating cigarette butts, and maternal transfer emerged as an alternative pathway for uptake of this material in the offspring. These results increase our understanding of the ecological risks posed by cigarette butts in aquatic environments.
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Affiliation(s)
- Hairong Lian
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Lingyun Zhu
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Meng Li
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Sen Feng
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Fan Gao
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Xin Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Fan Zhang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China
| | - Yilong Xi
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241000, Anhui, China
| | - Xianling Xiang
- School of Ecology and Environment, Anhui Normal University, Wuhu, Anhui Province 241002, China; Collaborative Innovation Center of Recovery and Reconstruction of Degraded Ecosystem in Wanjiang Basin Co-Founded by Anhui Province and Ministry of Education, Wuhu 241000, Anhui, China.
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3
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Kim GD, Lim EY, Shin HS. Macrophage Polarization and Functions in Pathogenesis of Chronic Obstructive Pulmonary Disease. Int J Mol Sci 2024; 25:5631. [PMID: 38891820 PMCID: PMC11172060 DOI: 10.3390/ijms25115631] [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: 04/15/2024] [Revised: 05/15/2024] [Accepted: 05/20/2024] [Indexed: 06/21/2024] Open
Abstract
Chronic obstructive pulmonary disease (COPD), the major leading cause of mortality worldwide, is a progressive and irreversible respiratory condition characterized by peripheral airway and lung parenchymal inflammation, accompanied by fibrosis, emphysema, and airflow limitation, and has multiple etiologies, including genetic variance, air pollution, and repetitive exposure to harmful substances. However, the precise mechanisms underlying the pathogenesis of COPD have not been identified. Recent multiomics-based evidence suggests that the plasticity of alveolar macrophages contributes to the onset and progression of COPD through the coordinated modulation of numerous transcription factors. Therefore, this review focuses on understanding the mechanisms and functions of macrophage polarization that regulate lung homeostasis in COPD. These findings may provide a better insight into the distinct role of macrophages in COPD pathogenesis and perspective for developing novel therapeutic strategies targeting macrophage polarization.
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Affiliation(s)
- Gun-Dong Kim
- Division of Food Functionality Research, Korea Food Research Institute (KFRI), Wanju 55365, Republic of Korea; (G.-D.K.); (E.Y.L.)
| | - Eun Yeong Lim
- Division of Food Functionality Research, Korea Food Research Institute (KFRI), Wanju 55365, Republic of Korea; (G.-D.K.); (E.Y.L.)
| | - Hee Soon Shin
- Division of Food Functionality Research, Korea Food Research Institute (KFRI), Wanju 55365, Republic of Korea; (G.-D.K.); (E.Y.L.)
- Department of Food Biotechnology, Korea University of Science and Technology (UST), Daejeon 34113, Republic of Korea
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4
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Ohashi K, Hayashida A, Nozawa A, Ito S. RNA sequencing analysis of early-stage atherosclerosis in vascular-on-a-chip and its application for comparing combustible cigarettes with heated tobacco products. Curr Res Toxicol 2024; 6:100163. [PMID: 38571525 PMCID: PMC10987886 DOI: 10.1016/j.crtox.2024.100163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/27/2024] [Accepted: 03/19/2024] [Indexed: 04/05/2024] Open
Abstract
Our previous study showed promising results in replicating early-stage atherosclerosis when vascular endothelial cells (VECs) were exposed to cigarette smoke (CS) extract via M0 macrophages. We used an organ-on-a-chip system as an alternative to animal testing to model atherosclerosis, which is a complex disease involving endothelial and immune cell communications. By incorporating macrophages into the vascular-on-a-chip system, we aimed to mimic the indirect effects of inhalable substances, such as CS, on VECs. In the current study, we further examined the suitability of our in vitro system for mimicking early-stage atherosclerosis by transcriptomic analyses of VECs exposed to CS directly or indirectly via macrophages. We also incorporated M1 macrophages to replicate a preexisting inflammatory state. We found a greater number of differentially expressed genes (DEGs) in direct exposure methods than indirect exposure methods. However, a pathway analysis showed that the direct exposure of CS to VECs primarily caused cell death-related pathway alterations, and the "Atherosclerosis Signaling" pathway was predicted to be negatively regulated. Indirect exposure via M0 macrophages similarly showed that the identified DEGs were related to cell death, while the "Atherosclerosis Signaling" pathway was predicted to be activated. In contrast, cell death-related pathway alterations were not observed by indirect exposure of CS to VECs via M1 macrophages, but the pathway perturbations were similar to a pro-inflammatory positive control. In addition, the "Atherosclerosis Signaling" pathway was predicted to be activated in VECs that were indirectly exposed to CS via M1 macrophages. These results suggest that M0 or M1 macrophages contribute to atherogenic transcriptomic changes in VECs, although they affect cell death-related pathways differently. We also used indirect exposure methods to compare the effects of CS and heated tobacco product (HTP) aerosol. Notably, gene expression changes related to atherosclerosis were less pronounced in HTP aerosol-exposed VECs than CS. Our study highlights the utility of the vascular-on-a-chip system with indirect exposure of CS extract via macrophages for replicating atherogenesis and suggests a reduced risk potential of the HTP. This research contributes to advancing alternatives to animal testing for toxicological and disease modeling studies.
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Affiliation(s)
| | | | - Atsuko Nozawa
- Scientific Product Assessment Center, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yokohama, Kanagawa 227-8512, Japan
| | - Shigeaki Ito
- Scientific Product Assessment Center, Japan Tobacco Inc., 6-2, Umegaoka, Aoba-ku, Yokohama, Kanagawa 227-8512, Japan
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5
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Gil A, Hoag GE, Salerno JP, Hornig M, Klimas N, Selin LK. Identification of CD8 T-cell dysfunction associated with symptoms in myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) and Long COVID and treatment with a nebulized antioxidant/anti-pathogen agent in a retrospective case series. Brain Behav Immun Health 2024; 36:100720. [PMID: 38327880 PMCID: PMC10847863 DOI: 10.1016/j.bbih.2023.100720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 11/29/2023] [Accepted: 12/18/2023] [Indexed: 02/09/2024] Open
Abstract
Background Patients with post-acute sequelae of Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection (PASC, i.e., Long COVID) have a symptom complex highly analogous to many features of myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS), suggesting they may share some aspects of pathogenesis in these similar disorders. ME/CFS is a complex disease affecting numerous organ systems and biological processes and is often preceded by an infection-like episode. It is postulated that the chronic manifestations of illness may result from an altered host response to infection or inability to resolve inflammation, as is being reported in Long COVID. The immunopathogenesis of both disorders is still poorly understood. Here, we show data that suggest Long COVID and ME/CFS may be due to an aberrant response to an immunological trigger-like infection, resulting in a dysregulated immune system with CD8 T-cell dysfunction reminiscent of some aspects of T-cell clonal exhaustion, a phenomenon associated with oxidative stress. As there is an urgent need for diagnostic tools and treatment strategies for these two related disabling disorders, here, in a retrospective case series, we have also identified a potential nebulized antioxidant/anti-pathogen treatment that has evidence of a good safety profile. This nebulized agent is comprised of five ingredients previously reported individually to relieve oxidative stress, attenuate NF-κB signaling, and/or to act directly to inhibit pathogens, including viruses. Administration of this treatment by nebulizer results in rapid access of small doses of well-studied antioxidants and agents with anti-pathogen potential to the lungs; components of this nebulized agent are also likely to be distributed systemically, with potential to enter the central nervous system. Methods and Findings: We conducted an analysis of CD8 T-cell function and severity of symptoms by self-report questionnaires in ME/CFS, Long COVID and healthy controls. We developed a CD8 T-cell functional assay, assessing CD8 T-cell dysfunction by intracellular cytokine staining (ICS) in a group of ME/CFS (n = 12) and Long COVID patients (n = 8), comparing to healthy controls (HC) with similar age and sex (n = 10). Magnet-enriched fresh CD8 T-cells in both patient groups had a significantly diminished capacity to produce both cytokines, IFNγ or TNFα, after PMA stimulation when compared to HC. The symptom severity questionnaire showed similar symptom profiles for the two disorders. Fortuitously, through a retrospective case series, we were able to examine the ICS and questionnaire data of 4 ME/CFS and 4 Long COVID patients in conjunction with their treatment (3-15 months). In parallel with the treatment pursued electively by participants in this retrospective case series, there was an increase in CD8 T-cell IFNγ and TNFα production and a decrease in overall self-reported symptom severity score by 54%. No serious treatment-associated side effects or laboratory anomalies were noted in these patients. Conclusions Here, in this small study, we present two observations that appear potentially fundamental to the pathogenesis and treatment of Long COVID and ME/CFS. The first is that both disorders appear to be characterized by dysfunctional CD8 T-cells with severe deficiencies in their abilities to produce IFNγ and TNFα. The second is that in a small retrospective Long COVID and ME/CFS case series, this immune dysfunction and patient health improved in parallel with treatment with an immunomodulatory, antioxidant pharmacological treatment with anticipated anti-pathogen activity. This work provides evidence of the potential utility of a biomarker, CD8 T-cell dysfunction, and suggests the potential for benefit from a new nebulized antioxidant/anti-pathogen treatment. These immune biomarker data may help build capacity for improved diagnosis and tracking of treatment outcomes during clinical trials for both Long COVID and ME/CFS while providing clues to new treatment avenues that suggest potential efficacy for both conditions.
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Affiliation(s)
- Anna Gil
- University of Massachusetts Chan Medical School, Department of Pathology, Worcester, MA, USA
| | | | - John P. Salerno
- Inspiritol, Inc., Fairfield, CT, USA
- The Salerno Center for Complementary Medicine, New York, USA
| | - Mady Hornig
- Columbia University Mailman School of Public Health, New York, USA
| | - Nancy Klimas
- Nova Southeastern University, Fort Lauderdale, Florida, USA
| | - Liisa K. Selin
- University of Massachusetts Chan Medical School, Department of Pathology, Worcester, MA, USA
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Klusackova P, Lischkova L, Kolesnikova V, Navratil T, Vlckova S, Fenclova Z, Schwarz J, Ondracek J, Ondrackova L, Kostejn M, Dvorackova S, Rossnerova A, Pohanka M, Bradna P, Zdimal V, Pelclova D. Elevated glutathione in researchers exposed to engineered nanoparticles due to potential adaptation to oxidative stress. Nanomedicine (Lond) 2024; 19:185-198. [PMID: 38275177 DOI: 10.2217/nnm-2023-0207] [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] [Indexed: 01/27/2024] Open
Abstract
Aim: To find a practical biomonitoring method for researchers exposed to nanoparticles causing oxidative stress. Methods: In a continuation of a study in 2016-2018, biological samples (plasma, urine and exhaled breath condensate [EBC]) were collected in 2019-2020 from 43 researchers (13.8 ± 3.0 years of exposure) and 45 controls. Antioxidant status was assessed using glutathione (GSH) and ferric-reducing antioxidant power, while oxidative stress was measured as thiobarbituric acid reactive substances, all using spectrophotometric methods. Researchers' personal nanoparticle exposure was monitored. Results: Plasma GSH was elevated in researchers both before and after exposure (p < 0.01); postexposure plasma GSH correlated with nanoparticle exposure, and GSH in EBC increased. Conclusion: The results suggest adaptation to chronic exposure to nanoparticles, as monitored by plasma and EBC GSH.
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Affiliation(s)
- Pavlina Klusackova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Lucie Lischkova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Viktoriia Kolesnikova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Tomas Navratil
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
- J. Heyrovský Institute of Physical Chemistry of the Czech Academy of Sciences, Prague, 182 00, Czech Republic
| | - Stepanka Vlckova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Zdenka Fenclova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Jaroslav Schwarz
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, 165 02, Czech Republic
| | - Jakub Ondracek
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, 165 02, Czech Republic
| | - Lucie Ondrackova
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, 165 02, Czech Republic
| | - Martin Kostejn
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, 165 02, Czech Republic
| | - Stepanka Dvorackova
- Faculty of Mechanical Engineering, Department of Machining & Assembly, Department of Engineering Technology, Department of Material Science, Technical University of Liberec, Liberec, 461 17, Czech Republic
| | - Andrea Rossnerova
- Institute of Experimental Medicine of the Czech Academy of Sciences, Department of Nanotoxicology & Molecular Epidemiology, Prague, 142 20, Czech Republic
| | - Miroslav Pohanka
- Faculty of Military Health Sciences, University of Defense, Hradec Kralove, 500 01, Czech Republic
| | - Pavel Bradna
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
| | - Vladimir Zdimal
- Institute of Chemical Process Fundamentals of the Czech Academy of Sciences, Prague, 165 02, Czech Republic
| | - Daniela Pelclova
- Department of Occupational Medicine, First Faculty of Medicine, Charles University in Prague & General University Hospital in Prague, Prague, 128 00, Czech Republic
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7
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Gao Z, Xiu M, Liu J, Wu F, Zhang X. Smoking, Symptoms Improvement, and Total Antioxidant Capacity in Patients with Drug-naive First-episode Schizophrenia: A Prospective Cohort Study. Curr Neuropharmacol 2024; 22:1733-1741. [PMID: 37859307 DOI: 10.2174/1570159x22666231019105328] [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: 02/20/2023] [Revised: 04/08/2023] [Accepted: 04/26/2023] [Indexed: 10/21/2023] Open
Abstract
BACKGROUND It has been hypothesized that smoking is associated with the severity of negative symptoms. Until now, no studies have investigated whether the impact of smoking on negative symptoms is dependent on antioxidants. This study was designed to evaluate the effect of smoking on therapeutic response and total antioxidants capacity (TAOC) in antipsychotic-naïve first-episode (ANFE) patients. METHODS The severity of the patient's symptoms was assessed using the Positive and Negative Syndrome Scale (PANSS). A total of 237 ANFE patients were recruited and treated with risperidone (oral tablets, 4-6 mg/day twice a day) for 12 weeks. PANSS was assessed at baseline and a 12-week follow-up. Plasma TAOC levels were also assayed at baseline and week 12. RESULTS Relative to nonsmokers with ANFE SZ, smokers had higher PANSS negative subscores. There was no significant difference in TAOC changes after 12 weeks of treatment with risperidone between smokers and non-smokers. However, we found greater improvement in negative symptoms in smokers compared to non-smokers. Further analysis in smokers with SZ demonstrated that improvements in negative symptoms were not associated with changes in TAOC. CONCLUSION Our study suggested that smoking affected the severity of baseline negative symptoms and further contributed to their reduction after risperidone treatment. However, improvement in negative symptoms was not dependent on the changes in TAOC.
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Affiliation(s)
- Zhiyong Gao
- The Affiliated Kangning Hospital of Wenzhou Medical University Zhejiang Provincial Clinical Research Center for Mental Disorder, Wenzhou, China
| | - Meihong Xiu
- Peking University Huilongguan Clinical Medical School, Beijing Huilongguan Hospital, Beijing, China
| | - Jiahong Liu
- The Affiliated Kangning Hospital of Wenzhou Medical University Zhejiang Provincial Clinical Research Center for Mental Disorder, Wenzhou, China
| | - Fengchun Wu
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Biomedical Engineering, Guangzhou Medical University, Guangzhou, China
- Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
- Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
| | - Xiangyang Zhang
- Department of Psychiatry, The Affiliated Brain Hospital of Guangzhou Medical University, Guangzhou, China
- Department of Biomedical Engineering, Guangzhou Medical University, Guangzhou, China
- Guangdong Engineering Technology Research Center for Translational Medicine of Mental Disorders, Guangzhou, China
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8
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Miklós Z, Horváth I. The Role of Oxidative Stress and Antioxidants in Cardiovascular Comorbidities in COPD. Antioxidants (Basel) 2023; 12:1196. [PMID: 37371927 DOI: 10.3390/antiox12061196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Oxidative stress driven by several environmental and local airway factors associated with chronic obstructive bronchiolitis, a hallmark feature of COPD, plays a crucial role in disease pathomechanisms. Unbalance between oxidants and antioxidant defense mechanisms amplifies the local inflammatory processes, worsens cardiovascular health, and contributes to COPD-related cardiovascular dysfunctions and mortality. The current review summarizes recent developments in our understanding of different mechanisms contributing to oxidative stress and its countermeasures, with special attention to those that link local and systemic processes. Major regulatory mechanisms orchestrating these pathways are also introduced, with some suggestions for further research in the field.
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Affiliation(s)
- Zsuzsanna Miklós
- National Korányi Institute for Pulmonology, Korányi F. Street 1, H-1121 Budapest, Hungary
| | - Ildikó Horváth
- National Korányi Institute for Pulmonology, Korányi F. Street 1, H-1121 Budapest, Hungary
- Department of Pulmonology, University of Debrecen, Nagyerdei krt 98, H-4032 Debrecen, Hungary
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9
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Tran PT, Tawornchat P, Kleuser B, Lohan SB, Schleusener J, Meinke MC, Darvin ME. Red- and Near-Infrared-Excited Autofluorescence as a Marker for Acute Oxidative Stress in Skin Exposed to Cigarette Smoke Ex Vivo and In Vivo. Antioxidants (Basel) 2023; 12:antiox12051011. [PMID: 37237877 DOI: 10.3390/antiox12051011] [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: 03/23/2023] [Revised: 04/18/2023] [Accepted: 04/25/2023] [Indexed: 05/28/2023] Open
Abstract
Air pollution is increasing worldwide and skin is exposed to high levels of pollution daily, causing oxidative stress and other negative consequences. The methods used to determine oxidative stress in the skin are invasive and non-invasive label-free in vivo methods, which are severely limited. Here, a non-invasive and label-free method to determine the effect of cigarette smoke (CS) exposure on skin ex vivo (porcine) and in vivo (human) was established. The method is based on the measurement of significant CS-exposure-induced enhancement in red- and near-infrared (NIR)-excited autofluorescence (AF) intensities in the skin. To understand the origin of red- and NIR-excited skin AF, the skin was exposed to several doses of CS in a smoking chamber. UVA irradiation was used as a positive control of oxidative stress in the skin. The skin was measured with confocal Raman microspectroscopy before CS exposure, immediately after CS exposure, and after skin cleaning. CS exposure significantly increased the intensity of red- and NIR-excited skin AF in a dose-dependent manner in the epidermis, as confirmed by laser scanning microscopy AF imaging and fluorescence spectroscopy measurements. UVA irradiation enhanced the intensity of AF, but to a lower extent than CS exposure. We concluded that the increase in red- and NIR-excited AF intensities of the skin after CS exposure could clearly be related to the induction of oxidative stress in skin, where skin surface lipids are mainly oxidized.
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Affiliation(s)
- Phuong Thao Tran
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
- Institute of Pharmacy, Department of Pharmacology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Parichat Tawornchat
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
- Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
| | - Burkhard Kleuser
- Institute of Pharmacy, Department of Pharmacology, Freie Universität Berlin, Königin-Luise-Str. 2+4, 14195 Berlin, Germany
| | - Silke B Lohan
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Johannes Schleusener
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Martina C Meinke
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
| | - Maxim E Darvin
- Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Department of Dermatology, Venereology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charitéplatz 1, 10117 Berlin, Germany
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10
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Jiang S, Chen Y. The role of sulfur compounds in chronic obstructive pulmonary disease. Front Mol Biosci 2022; 9:928287. [PMID: 36339716 PMCID: PMC9626809 DOI: 10.3389/fmolb.2022.928287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 10/03/2022] [Indexed: 11/19/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a common respiratory disease that brings about great social and economic burden, with oxidative stress and inflammation affecting the whole disease progress. Sulfur compounds such as hydrogen sulfide (H2S), thiols, and persulfides/polysulfides have intrinsic antioxidant and anti-inflammatory ability, which is engaged in the pathophysiological process of COPD. Hydrogen sulfide mainly exhibits its function by S-sulfidation of the cysteine residue of the targeted proteins. It also interacts with nitric oxide and acts as a potential biomarker for the COPD phenotype. Thiols’ redox buffer such as the glutathione redox couple is a major non-enzymatic redox buffer reflecting the oxidative stress in the organism. The disturbance of redox buffers was often detected in patients with COPD, and redressing the balance could delay COPD exacerbation. Sulfane sulfur refers to a divalent sulfur atom bonded with another sulfur atom. Among them, persulfides and polysulfides have an evolutionarily conserved modification with antiaging effects. Sulfur compounds and their relative signaling pathways are also associated with the development of comorbidities in COPD. Synthetic compounds which can release H2S and persulfides in the organism have gradually been developed. Naturally extracted sulfur compounds with pharmacological effects also aroused great interest. This study discussed the biological functions and mechanisms of sulfur compounds in regulating COPD and its comorbidities.
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11
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Analyzing integrated network of methylation and gene expression profiles in lung squamous cell carcinoma. Sci Rep 2022; 12:15799. [PMID: 36138066 PMCID: PMC9500023 DOI: 10.1038/s41598-022-20232-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 09/09/2022] [Indexed: 11/24/2022] Open
Abstract
Gene expression, DNA methylation, and their organizational relationships are commonly altered in lung squamous cell carcinoma (LUSC). To elucidate these complex interactions, we reconstructed a differentially expressed gene network and a differentially methylated cytosine (DMC) network by partial information decomposition and an inverse correlation algorithm, respectively. Then, we performed graph union to integrate the networks. Community detection and enrichment analysis of the integrated network revealed close interactions between the cell cycle, keratinization, immune system, and xenobiotic metabolism gene sets in LUSC. DMC analysis showed that hypomethylation targeted the gene sets responsible for cell cycle, keratinization, and NRF2 pathways. On the other hand, hypermethylated genes affected circulatory system development, the immune system, extracellular matrix organization, and cilium organization. By centrality measurement, we identified NCAPG2, PSMG3, and FADD as hub genes that were highly connected to other nodes and might play important roles in LUSC gene dysregulation. We also found that the genes with high betweenness centrality are more likely to affect patients’ survival than those with low betweenness centrality. These results showed that the integrated network analysis enabled us to obtain a global view of the interactions and regulations in LUSC.
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12
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Kelly TL, Ward M, Pratt NL, Ramsay E, Gillam M, Roughead EE. The association between exacerbation of chronic obstructive pulmonary disease and timing of paracetamol use: a cohort study in elderly Australians. Respir Res 2022; 23:80. [PMID: 35382818 PMCID: PMC8979782 DOI: 10.1186/s12931-022-02010-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Accepted: 03/29/2022] [Indexed: 12/02/2022] Open
Abstract
Background In elderly populations, paracetamol may be used regularly for conditions such as osteoarthritis. Paracetamol has been associated with respiratory disease through a proposed mechanism of glutathione depletion and oxidative stress. Given that chronic obstructive pulmonary disease (COPD) is frequently co-morbid with osteoarthritis, this study investigated whether the dose and timing of paracetamol exposure may induce COPD exacerbations. Methods The study population was 3523 Australian Government Department of Veterans’ Affairs full entitlement holders who had existing COPD on 1 January 2011, who were dispensed at least one prescription of paracetamol between 1 January 2011 and 30 September 2015, and had no paracetamol dispensed in the 6 months prior to 1 January 2011. The outcome was time to first hospitalisation for COPD exacerbation after initiation of paracetamol. A weighted cumulative exposure approach was used. Results The association between paracetamol exposure and COPD exacerbation was protective or harmful depending on the dose, duration, and recency of exposure. Compared to non-use, current use at the maximum dose of 4 g daily for 7 days was associated with a lower risk (HR = 0.78, 95% CI = 0.67–0.92) and a higher risk after 30 days (HR = 1.27, 95% CI = 1.06–1.52). Risk declined to baseline after 2 months. For past use, there was a short-term increase in risk on discontinuation depending of dose, duration and time since stopping. Conclusions Patients and doctors should be aware of the possible risk of COPD exacerbation with higher dose paracetamol 1 to 6 weeks after initiation or discontinuation, but no increased risk after 2 months. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-02010-z.
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Affiliation(s)
- Thu-Lan Kelly
- Clinical and Health Sciences, Quality Use of Medicines Pharmacy Research Centre, University of South Australia, Adelaide, Australia.
| | - Michael Ward
- Clinical and Health Sciences, University of South Australia, Adelaide, Australia
| | - Nicole L Pratt
- Clinical and Health Sciences, Quality Use of Medicines Pharmacy Research Centre, University of South Australia, Adelaide, Australia
| | - Emmae Ramsay
- Clinical and Health Sciences, Quality Use of Medicines Pharmacy Research Centre, University of South Australia, Adelaide, Australia
| | - Marianne Gillam
- Clinical and Health Sciences, Quality Use of Medicines Pharmacy Research Centre, University of South Australia, Adelaide, Australia
| | - Elizabeth E Roughead
- Clinical and Health Sciences, Quality Use of Medicines Pharmacy Research Centre, University of South Australia, Adelaide, Australia
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Prieux R, Ferrara F, Cervellati F, Guiotto A, Benedusi M, Valacchi G. Inflammasome involvement in CS-induced damage in HaCaT keratinocytes. In Vitro Cell Dev Biol Anim 2022; 58:335-348. [PMID: 35428946 PMCID: PMC9076721 DOI: 10.1007/s11626-022-00658-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2021] [Accepted: 01/20/2022] [Indexed: 12/14/2022]
Abstract
Cigarette smoke (CS) alters cutaneous biological processes such as redox homeostasis and inflammation response that might be involved in promoting skin inflammatory conditions. Exposure to CS has also been linked to a destabilization of the NLRP3 inflammasome in pollution target tissues such as the lung epithelium, resulting in a more vulnerable immunological response to several exogenous and endogenous stimuli related to oxidative stress. Thus, CS has an adverse effect on host defense, increasing the susceptibility to develop lung infections and pathologies. In the skin, another direct target of pollution, inflammasome disorders have been linked to an increasing number of diseases such as melanoma, psoriasis, vitiligo, atopic dermatitis, and acne, all conditions that have been connected directly or indirectly to pollution exposure. The inflammasome machinery is an important innate immune sensor in human keratinocytes. However, the role of CS in the NLRP1 and NLRP3 inflammasome in the cutaneous barrier has still not been investigated. In the present study, we were able to determine in keratinocytes exposed to CS an increased oxidative damage evaluated by 4-HNE protein adduct and carbonyl formation. Of note is that, while CS inhibited NLRP3 activation, it was able to activate NLRP1, leading to an increased secretion of the proinflammatory cytokines IL-1β and IL-18. This study highlights the importance of the inflammasome machinery in CS that more in general, in pollution, affects cutaneous tissues and the important cross-talk between different members of the NLRP inflammasome family.
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Affiliation(s)
- Roxane Prieux
- Department of Neurosciences and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Francesca Ferrara
- Department of Neurosciences and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Franco Cervellati
- Department of Neurosciences and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Anna Guiotto
- Department of Neurosciences and Rehabilitation, University of Ferrara, Ferrara, Italy
| | - Mascia Benedusi
- Department of Neurosciences and Rehabilitation, University of Ferrara, Ferrara, Italy.
| | - Giuseppe Valacchi
- Department of Environment and Prevention, University of Ferrara, Ferrara, Italy.
- Plants for Human Health Institute, North Carolina State University, Kannapolis, NC, USA.
- Department of Food and Nutrition, Kyung Hee University, Seoul, 02447, South Korea.
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14
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Arancini L, Mohebbi M, Berk M, Dean OM, Bortolasci CC, Spolding B, Zazula R, Dodd S. A placebo-controlled, randomised pilot trial of N-acetylcysteine or placebo for cessation of tobacco smoking. Eur Neuropsychopharmacol 2021; 53:120-126. [PMID: 34757312 DOI: 10.1016/j.euroneuro.2021.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 11/18/2022]
Abstract
Smoking represents a significant health threat to the population, however there remains a core group of consistent smokers that are largely unable to break the addiction. Novel therapies are required to assist this group with cessation. N-acetylcysteine (NAC) is a nutraceutical supplement that has shown efficacy compared to placebo in previous pilot studies for assisting smokers to quit or reduce their consumption of cigarettes. A double-blind, randomised trial with a treatment period of 16 weeks and a final follow-up at 42 weeks was conducted comparing 1.8g of effervescent NAC per day (n=47) with placebo (n=47) as an aide to smoking cessation. Both study arms received adjunctive online support through the QuitCoach program. Participants reported smoking at each timepoint (baseline and weeks 8, 16 & 42), which was confirmed through salivary cotinine and exhaled carbon monoxide testing. Primary and secondary analyses were undertaken using a modified intent-to-treat basis, including all participants with at least one valid post baseline outcome, regardless of treatment received or their withdrawal from the study. There was no significant difference in smoking outcomes between intervention groups among the 24 participants that competed follow-up. There were no significant differences in age, gender, or body mass index (BMI) between the groups lost to follow-up or recorded at follow-up. This study found no evidence to support NAC as a therapy for smoking cessation. The negative outcome could be the result of lack of treatment efficacy, or alternatively, small sample size, participant retention difficulties, dose, or duration of follow-up. Trial Registration: Australian New Zealand Clinical Trials registry (ANZCTR), ACTRN12617001478303. Registered on 19 October 2017.
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Affiliation(s)
- Lauren Arancini
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia.
| | - Mohammadreza Mohebbi
- Deakin University, Faculty of Health, Biostatistics Unit, Geelong, VIC, Australia.
| | - Michael Berk
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia; University Hospital Geelong, Barwon Health, Geelong, VIC, Australia; Department of Psychiatry, the University of Melbourne, Parkville, VIC, Australia; Orygen, the National Centre for Excellence in Youth Mental Health, Parkville, VIC, Australia; Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia.
| | - Olivia M Dean
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia; University Hospital Geelong, Barwon Health, Geelong, VIC, Australia; Department of Psychiatry, the University of Melbourne, Parkville, VIC, Australia; Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia.
| | - Chiara C Bortolasci
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia.
| | - Briana Spolding
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia
| | - Robson Zazula
- Federal University for Latin American Integration, Foz do Iguacu, Brazil
| | - Seetal Dodd
- Deakin University, IMPACT, the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Barwon Health, Geelong, VIC, Australia; University Hospital Geelong, Barwon Health, Geelong, VIC, Australia; Department of Psychiatry, the University of Melbourne, Parkville, VIC, Australia; Orygen, the National Centre for Excellence in Youth Mental Health, Parkville, VIC, Australia.
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Chełchowska M, Gajewska J, Ambroszkiewicz J, Mazur J, Ołtarzewski M, Maciejewski TM. Influence of Oxidative Stress Generated by Smoking during Pregnancy on Glutathione Status in Mother-Newborn Pairs. Antioxidants (Basel) 2021; 10:antiox10121866. [PMID: 34942969 PMCID: PMC8698311 DOI: 10.3390/antiox10121866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/15/2021] [Accepted: 11/21/2021] [Indexed: 11/16/2022] Open
Abstract
Glutathione plays a key role in maintaining a physiological balance between prooxidants and antioxidants in the human body. Therefore, we examined the influence of maternal smoking as a source of oxidative stress measured by total oxidant capacity (TOC) on reduced glutathione (GSH), oxidized glutathione (GSSG), glutathione peroxidase (GPx-3), and reductase (GR) amount in maternal and umbilical cord blood in 110 (45 smoking and 65 non-smoking) mother-newborn pairs. Concentrations of glutathione status markers and TOC were evaluated by competitive inhibition enzyme immunoassay technique. Plasma TOC levels were significantly higher and the GSH/GSSG ratio, which is considered an index of the cell’s redox status, were significantly lower in smoking women and their offspring than in non-smoking pairs. Decreased GR levels were found in smoking mothers and their newborns compared with similar non-smoking groups. Although plasma GPx-3 concentrations were similar in both maternal groups, in the cord blood of newborns exposed to tobacco smoke in utero they were reduced compared with the levels observed in children of tobacco abstinent mothers. Oxidative stress generated by tobacco smoke impairs glutathione homeostasis in both the mother and the newborn. The severity of oxidative processes in the mother co-existing with the reduced potential of antioxidant systems may have a negative effect on the oxidative-antioxidant balance in the newborn.
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Affiliation(s)
- Magdalena Chełchowska
- Department of Screening Tests and Metabolic Diagnostics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland; (J.G.); (J.A.); (M.O.)
- Correspondence: ; Tel./Fax: +48-2-2327-7260
| | - Joanna Gajewska
- Department of Screening Tests and Metabolic Diagnostics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland; (J.G.); (J.A.); (M.O.)
| | - Jadwiga Ambroszkiewicz
- Department of Screening Tests and Metabolic Diagnostics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland; (J.G.); (J.A.); (M.O.)
| | - Joanna Mazur
- Department of Humanization in Medicine and Sexology, Collegium Medicum University of Zielona Góra, 65-729 Zielona Góra, Poland;
| | - Mariusz Ołtarzewski
- Department of Screening Tests and Metabolic Diagnostics, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland; (J.G.); (J.A.); (M.O.)
| | - Tomasz M. Maciejewski
- Clinic of Obstetrics and Gynaecology, Institute of Mother and Child, Kasprzaka 17a, 01-211 Warsaw, Poland;
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16
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Gunda V, Chhonker YS, Natesh NS, Raut P, Muniyan S, Wyatt TA, Murry DJ, Batra SK, Rachagani S. Nuclear factor kappa-B contributes to cigarette smoke tolerance in pancreatic ductal adenocarcinoma through cysteine metabolism. Biomed Pharmacother 2021; 144:112312. [PMID: 34678726 DOI: 10.1016/j.biopha.2021.112312] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/23/2021] [Accepted: 10/05/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND Retrospective studies revealed that cigarette smoking enhances risk of incidence and worsens prognosis in pancreatic cancer (PC) patients. Poor prognosis in smoker cohort of PC patients indicates prevalence of cigarette smoke stimulated survival mechanisms yet to be explored in PC. In this study, cigarette smoke induced metabolic pathways were explored and targeted in PC. METHODS Human pancreatic ductal adenocarcinoma cell (PDAC) lines, genetically engineered mice models (GEMMs), mass spectrometry based heavy isotope-based metabolite analysis, cytotoxicity assays and Nuclear factor kappa-B (NF-kB) targeting were utilized in this study. Cigarette smoke extract (CSE) was prepared fresh each day by bubbling cell culture media with the smoke emitted from 85 mm, filtered, Code 1R6F reference cigarettes and used for in vitro procedures. High dose cigarette smoke exposure of GEMMs was achieved by daily exposure of animals to similar cigarettes, 6 h/day for a total period of 180 days. FINDINGS We observed that PDAC cells upregulate glutathione anabolism through cysteine uptake and glutamate cysteine ligase (GCLM), supporting survival, upon CSE exposure. In vivo, cigarette smoke exposure leads to concomitant upregulation of GCLM and activated NF-kB in the PDAC consistent with in vitro, in CSE-exposed PDAC. Finally, either inhibition of NF-kB or depletion of cysteine impaired PDAC cell survival in cigarette smoke exposed conditions through suppression of glutathione and ROS enhancement, reverted by glutathione supplementation. INTERPRETATION Our findings demonstrate scope for targeting smoke induced, NF-kB mediated, cysteine and glutathione metabolism for improving the survival of smoke addicted PDAC.
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Affiliation(s)
- Venugopal Gunda
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Yashpal S Chhonker
- Department of Pharmacy Practice and Science, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Nagabhishek Sirpu Natesh
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Pratima Raut
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Sakthivel Muniyan
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Todd A Wyatt
- Veterans Affairs Nebraska-Western Iowa Health Care System, Omaha, NE 68105, USA; Department of Environmental, Agricultural and Occupational Health, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Internal Medicine, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Daryl J Murry
- Department of Pharmacy Practice and Science, University of Nebraska Medical Center, Omaha, NE 68198, USA; Fred & Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA; Fred & Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center, Omaha, NE 68198, USA
| | - Satyanarayana Rachagani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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17
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Prakova GR, Gidikova PL, Sandeva GN, Haracherova KH, Tacheva TT, Vlaykova TI. Effects of Occupational Inorganic Dust Exposure on Plasma Glutathione. IRANIAN JOURNAL OF PUBLIC HEALTH 2021; 50:1495-1496. [PMID: 34568193 PMCID: PMC8426792 DOI: 10.18502/ijph.v50i7.6646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Accepted: 11/27/2019] [Indexed: 11/24/2022]
Affiliation(s)
- Gospodinka R Prakova
- Department of Internal Medicine, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
| | - Pavlina L Gidikova
- Department of Hygiene, Epidemiology, and Infectious Diseases, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
| | - Gergana N Sandeva
- Department of Hygiene, Epidemiology, and Infectious Diseases, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
| | | | - Tanya T Tacheva
- Department of Chemistry and Biochemistry, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
| | - Tatyana I Vlaykova
- Department of Chemistry and Biochemistry, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
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Wispriyono B, Jalaludin J, Kusnoputranto H, Pakpahan S, Aryati GP, Pratama S, Librianty N, Rozaliyani A, Taufik FF, Novirsa R. Glutathione (GSH) and superoxide dismutase (SOD) levels among junior high school students induced by indoor particulate matter 2.5 (PM2.5) and nitrogen dioxide (NO2) exposure. J Public Health Res 2021; 10. [PMID: 34351097 PMCID: PMC8764553 DOI: 10.4081/jphr.2021.2372] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/06/2021] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Indoor air pollution has globally known as the risk factor of acute respiratory infection in young children. The exposure to indoor particulate matter 2.5 (PM2.5) and nitrogen dioxide (NO2) at house or school can be a potential risk to children's health. This study aimed to examine the association between indoor PM2.5 and NO2 with oxidative stress markers in junior high school students. DESIGN AND METHOD This study was conducted using a cross sectional study with 75 students collected randomly from four junior high schools in Jakarta. PM2.5 and NO2 were measured in classrooms and school yards. The schools were categorized based on the exposure level of PM2.5 and NO2 in classrooms. Superoxide dismutase (SOD) and reduced glutathione (GSH) were examined from the blood sample. All students were interviewed with questionnaires to determine upper respiratory tract infection, smoking family members, mosquito repellent usage, and dietary supplement consumption. RESULTS Mean concentration of indoor PM2.5 and NO2 were 0.125±0.036 mg m-3 and 36.37±22.33 µg m-3, respectively. The schools which located near to highway showed lower PM2.5 and higher NO2 level indicated the emission of traffic activity. Mean activity of SOD was 96.36±50.94 U mL-1 and mean concentration of GSH was of 0.62±0.09 µg mL-1. Most of the students reported upper respiratory tract infection history, smoking family member, use mosquito repellent at home, and do not consume dietary supplement. CONCLUSION The level of oxidative stress markers and the exposure categories of classroom PM2.5 and NO2 was not significantly different, however there were significant correlation with cigarette smoke and mosquito repellent at home. Nevertheless, the exposure of indoor PM2.5 and NO2 increased the risk of the exposure to cigarette smoke and mosquito repellent at home. Further study on the air pollution at school and home is needed to affirm association towards student's health and to design strategic control efforts.
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Affiliation(s)
- Bambang Wispriyono
- Department of Environmental Health, Faculty of Public Health, Universitas Indonesia, Depok.
| | - Juliana Jalaludin
- Department of Environmental and Occupational Health, Faculty of Medicine and Health Sciences, Universiti Putra Malaysia, Serdang, Selangor .
| | - Haryoto Kusnoputranto
- Department of Environmental Health, Faculty of Public Health, Universitas Indonesia, Depok.
| | - Sasnila Pakpahan
- Center for Industrial and Environmental Health Studies Faculty of Public Health, Universitas Indonesia, Depok.
| | - Gita Permata Aryati
- Center for Industrial and Environmental Health Studies Faculty of Public Health, Universitas Indonesia, Depok.
| | - Satria Pratama
- Center for Industrial and Environmental Health Studies Faculty of Public Health, Universitas Indonesia, Depok.
| | - Nurfanida Librianty
- Department of Environmental Health, Faculty of Public Health, Universitas Indonesia, Depok.
| | - Anna Rozaliyani
- Department of Parasitology, Faculty of Medicine, Universitas Indonesia, Jakarta.
| | - Feni Fitriani Taufik
- Department of Pulmonology and Respiratory Medicine, Faculty of Medicine, Universitas Indonesia, Jakarta.
| | - Randy Novirsa
- Department of Environmental Health, Faculty of Public Health, Universitas Indonesia, Depok.
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19
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Xiong R, Wu Y, Wu Q, Muskhelishvili L, Davis K, Tripathi P, Chen Y, Chen T, Bryant M, Rosenfeldt H, Healy SM, Cao X. Integration of transcriptome analysis with pathophysiological endpoints to evaluate cigarette smoke toxicity in an in vitro human airway tissue model. Arch Toxicol 2021; 95:1739-1761. [PMID: 33660061 PMCID: PMC8113308 DOI: 10.1007/s00204-021-03008-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 02/16/2021] [Indexed: 01/04/2023]
Abstract
Exposure to cigarette smoke (CS) is a known risk factor in the pathogenesis of smoking-caused diseases, such as chronic obstructive pulmonary diseases (COPD) and lung cancer. To assess the effects of CS on the function and phenotype of airway epithelial cells, we developed a novel repeated treatment protocol and comprehensively evaluated the progression of key molecular, functional, and structural abnormalities induced by CS in a human in vitro air-liquid-interface (ALI) airway tissue model. Cultures were exposed to CS (diluted with 0.5 L/min, 1.0 L/min, and 4.0 L/min clean air) generated from smoking five 3R4F University of Kentucky reference cigarettes under the International Organization for Standardization (ISO) machine smoking regimen, every other day for 4 weeks (3 days per week, 40 min/day). By integrating the transcriptomics-based approach with the in vitro pathophysiological measurements, we demonstrated CS-mediated effects on oxidative stress, pro-inflammatory cytokines and matrix metalloproteinases (MMPs), ciliary function, expression and secretion of mucins, and squamous cell differentiation that are highly consistent with abnormalities observed in airways of smokers. Enrichment analysis on the transcriptomic profiles of the ALI cultures revealed key molecular pathways, such as xenobiotic metabolism, oxidative stress, and inflammatory responses that were perturbed in response to CS exposure. These responses, in turn, may trigger aberrant tissue remodeling, eventually leading to the onset of respiratory diseases. Furthermore, changes of a panel of genes known to be disturbed in smokers with COPD were successfully reproduced in the ALI cultures exposed to CS. In summary, findings from this study suggest that such an integrative approach may be a useful tool for identifying genes and adverse cellular events caused by inhaled toxicants, like CS.
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Affiliation(s)
- Rui Xiong
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Yue Wu
- Division of Bioinformatics and Biostatistics, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Qiangen Wu
- Division of Biochemical Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | | | - Kelly Davis
- Toxicologic Pathology Associates, Jefferson, AR, 72079, USA
| | - Priya Tripathi
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Ying Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Tao Chen
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Matthew Bryant
- Office of Scientific Coordination, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA
| | - Hans Rosenfeldt
- Division of Nonclinical Science, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Sheila M Healy
- Division of Nonclinical Science, Center for Tobacco Products, US Food and Drug Administration, Silver Spring, Maryland, 20993, USA
| | - Xuefei Cao
- Division of Genetic and Molecular Toxicology, National Center for Toxicological Research, US Food and Drug Administration, Jefferson, AR, 72079, USA.
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Abstract
Cigarette smoke (CS) is likely the most common preventable cause of human morbidity and mortality worldwide. Consequently, inexpensive interventional strategies for preventing CS-related diseases would positively impact health systems. Inhaled CS is a powerful inflammatory stimulus and produces a shift in the normal balance between antioxidants and oxidants, inducing oxidative stress in both the respiratory system and throughout the body. This enduring and systemic pro-oxidative state within the body is reflected by increased levels of oxidative stress and inflammation biomarkers seen in smokers. Smokers might benefit from consuming antioxidant supplements, or a diet rich in fruit and vegetables, which can reduce the CS-related oxidative stress. This review provides an overview of the plasma profile of antioxidants observable in smokers and examines the heterogeneous literature to elucidate and discuss the effectiveness of interventional strategies based on antioxidant supplements or an antioxidant-rich diet to improve the health of smokers. An antioxidant-rich diet can provide an easy-to-implement and cost-effective preventative strategy to reduce the risk of CS-related diseases, thus being one of the simplest ways for smokers to stay in good health for as long as possible. The health benefits attributable to the intake of antioxidants have been observed predominantly when these have been consumed within their natural food matrices in an optimal antioxidant-rich diet, while these preventive effects are rarely achieved with the intake of individual antioxidants, even at high doses.
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21
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Sotgia S, Fois AG, Paliogiannis P, Carru C, Mangoni AA, Zinellu A. Methodological Fallacies in the Determination of Serum/Plasma Glutathione Limit Its Translational Potential in Chronic Obstructive Pulmonary Disease. Molecules 2021; 26:molecules26061572. [PMID: 33809301 PMCID: PMC8000559 DOI: 10.3390/molecules26061572] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/07/2021] [Accepted: 03/10/2021] [Indexed: 11/16/2022] Open
Abstract
This study aimed to review and critically appraise the current methodological issues undermining the suitability of the measurement of serum/plasma glutathione, both in the total and reduced form, as a measure of systemic oxidative stress in chronic obstructive pulmonary disease (COPD). Fourteen relevant articles published between 2001 and 2020, in 2003 subjects, 1111 COPD patients, and 892 controls, were reviewed. Nine studies, in 902 COPD patients and 660 controls, measured glutathione (GSH) in the reduced form (rGSH), while the remaining five, in 209 COPD patients and 232 controls, measured total GSH (tGSH). In the control group, tGSH ranged between 5.7 and 7.5 µmol/L, whilst in COPD patients, it ranged between 4.5 and 7.4 µmol/L. The mean tGSH was 6.6 ± 0.9 µmol/L in controls and 5.9 ± 1.4 µmol/L in patients. The concentrations of rGSH in the control group showed a wide range, between 0.47 and 415 µmol/L, and a mean value of 71.9 ± 143.1 µmol/L. Similarly, the concentrations of rGSH in COPD patients ranged between 0.49 and 279 µmol/L, with a mean value of 49.9 ± 95.9 µmol/L. Pooled tGSH concentrations were not significantly different between patients and controls (standard mean difference (SMD) = -1.92, 95% CI -1582 to 0.0219; p = 0.057). Depending on whether the mean concentrations of rGSH in controls were within the accepted normal range of 0.5-5.0 µmol/L, pooled rGSH concentrations showed either a significant (SMD = -3.8, 95% CI -2.266 to -0.709; p < 0.0001) or nonsignificant (SMD = -0.712, 95% CI -0.627 to 0.293; p = 0.48) difference. These results illustrate the existing and largely unaddressed methodological issues in the interpretation of the serum/plasma concentrations of tGSH and rGSH in COPD.
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Affiliation(s)
- Salvatore Sotgia
- Department of Biomedical Sciences, School of Medicine, University of Sassari, 07100 Sassari, Italy; (P.P.); (C.C.); (A.Z.)
- Correspondence: ; Tel.: +39-079-229775; Fax: +39-079-228120
| | - Alessandro G. Fois
- Department of Clinical and Experimental Medicine, School of Medicine, University of Sassari, 07100 Sassari, Italy;
- Department of Respiratory Diseases, University Hospital Sassari (AOU-SS), 07100 Sassari, Italy
| | - Panagiotis Paliogiannis
- Department of Biomedical Sciences, School of Medicine, University of Sassari, 07100 Sassari, Italy; (P.P.); (C.C.); (A.Z.)
| | - Ciriaco Carru
- Department of Biomedical Sciences, School of Medicine, University of Sassari, 07100 Sassari, Italy; (P.P.); (C.C.); (A.Z.)
| | - Arduino A. Mangoni
- Discipline of Clinical Pharmacology, College of Medicine and Public Health, Flinders University and Flinders Medical Centre, Adelaide, SA 5042, Australia;
| | - Angelo Zinellu
- Department of Biomedical Sciences, School of Medicine, University of Sassari, 07100 Sassari, Italy; (P.P.); (C.C.); (A.Z.)
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22
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Checa J, Aran JM. Airway Redox Homeostasis and Inflammation Gone Awry: From Molecular Pathogenesis to Emerging Therapeutics in Respiratory Pathology. Int J Mol Sci 2020; 21:E9317. [PMID: 33297418 PMCID: PMC7731288 DOI: 10.3390/ijms21239317] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Accepted: 12/05/2020] [Indexed: 02/06/2023] Open
Abstract
As aerobic organisms, we are continuously and throughout our lifetime subjected to an oxidizing atmosphere and, most often, to environmental threats. The lung is the internal organ most highly exposed to this milieu. Therefore, it has evolved to confront both oxidative stress induced by reactive oxygen species (ROS) and a variety of pollutants, pathogens, and allergens that promote inflammation and can harm the airways to different degrees. Indeed, an excess of ROS, generated intrinsically or from external sources, can imprint direct damage to key structural cell components (nucleic acids, sugars, lipids, and proteins) and indirectly perturb ROS-mediated signaling in lung epithelia, impairing its homeostasis. These early events complemented with efficient recognition of pathogen- or damage-associated recognition patterns by the airway resident cells alert the immune system, which mounts an inflammatory response to remove the hazards, including collateral dead cells and cellular debris, in an attempt to return to homeostatic conditions. Thus, any major or chronic dysregulation of the redox balance, the air-liquid interface, or defects in epithelial proteins impairing mucociliary clearance or other defense systems may lead to airway damage. Here, we review our understanding of the key role of oxidative stress and inflammation in respiratory pathology, and extensively report current and future trends in antioxidant and anti-inflammatory treatments focusing on the following major acute and chronic lung diseases: acute lung injury/respiratory distress syndrome, asthma, chronic obstructive pulmonary disease, pulmonary fibrosis, and cystic fibrosis.
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Affiliation(s)
| | - Josep M. Aran
- Immune-Inflammatory Processes and Gene Therapeutics Group, IDIBELL, L’Hospitalet de Llobregat, 08908 Barcelona, Spain;
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23
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Systematic Review and Meta-Analysis of the Blood Glutathione Redox State in Chronic Obstructive Pulmonary Disease. Antioxidants (Basel) 2020; 9:antiox9111146. [PMID: 33218130 PMCID: PMC7698942 DOI: 10.3390/antiox9111146] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Revised: 11/10/2020] [Accepted: 11/17/2020] [Indexed: 12/18/2022] Open
Abstract
The aim of this systematic review and meta-analysis was to assess the blood concentrations of the total and reduced forms of the low-molecular-weight antioxidant thiol glutathione (GSH) in chronic obstructive pulmonary disease (COPD) patients in comparison to healthy individuals. A literature search was conducted in the PubMed and Web of Science databases from inception until June 2020. In the 18 studies identified (involving a total of 974 COPD patients and 631 healthy controls), the pooled reduced GSH concentrations were significantly lower in patients with COPD than controls (SMD = -3.04, 95% CI = -4.42 to -1.67; p < 0.001). By contrast, the pooled total GSH concentrations were significantly higher in patients with COPD than controls (SMD = 0.42, 95% CI = 0.11 to 0.73; p = 0.009). Our meta-analysis showed that the blood concentrations of reduced GSH, even in the presence of higher total GSH concentrations, were significantly lower in patients with COPD when compared to healthy controls. This suggests that an impaired antioxidant defense system plays an important role in the pathogenesis of COPD.
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24
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Chen P, Xiao Z, Wu H, Wang Y, Su W, Li P. The Effects of Naringin on Cigarette Smoke-Induced Dynamic Changes in Oxidation/Antioxidant System in Lung of Mice. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20947233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Naringin possesses strong antioxidative activity and can protect against some respiratory diseases. Oxidative stress is thought to be a major factor in the development of many tobacco-caused diseases. The nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathway plays a critical role in the regulation of oxidative stress. The dynamic changes in the antioxidant system in the lung that are induced by cigarette smoke (CS) are not well investigated, and how naringin affects these changes remains unknown. This study aimed to investigate the dynamic changes between the oxidation and antioxidant systems resulting from CS exposure and the effects of naringin on these changes in mice. Mice were chronically exposed to CS for 30 days. The levels of malondialdehyde (MDA), glutathione (GSH), interleukin (IL)-6, and tumor necrosis factor-alpha (TNF-α); the activities of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px); and the expressions of Nrf2, heme oxygenase-1 (HO-1), and nicotinamide adenine dinucleotide phosphate quinone dehydrogenase 1 (NQO1) in lung tissue were measured on days 2, 7, and 30. The levels of MDA, GSH, IL-6, and TNF-α in the lung were found to increase throughout the exposure. SOD and GSH-Px activities showed an increase on day 2 and a decrease on days 7 and 30. The messenger ribonucleic acid expressions of Nrf2, HO-1, and NQO1 were elevated on day 2 and decreased on day 7; Nrf2 and HO-1 expressions were continually decreased, but NQO1 expression was increased again, on day 30. Naringin restored the levels of these biochemical indices to normal throughout the experiment, suggesting that naringin protected against the CS-induced oxidative damage by suppressing the increase of antioxidants resulting from the early stage of CS exposure, as well as inhibiting the depletion of antioxidants due to long-term oxidative stress. Naringin also suppressed lung inflammation by inhibiting IL-6 and TNF-α. These results indicate that naringin possesses a powerful ability to maintain the balance of the oxidation/antioxidant system in the lung when subjected to CS exposure, probably by regulating the Nrf2 signaling pathway.
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Affiliation(s)
- Pan Chen
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Ziting Xiao
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Hao Wu
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yonggang Wang
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Weiwei Su
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Peibo Li
- Guangdong Engineering and Technology Research Center for Quality and Efficacy Re-evaluation of Post-marketed TCM, Guangdong Key Laboratory of Plant Resources, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
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25
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Dalle-Donne I, Garavaglia ML, Colombo G, Astori E, Lionetti MC, La Porta CAM, Santucci A, Rossi R, Giustarini D, Milzani A. Cigarette smoke and glutathione: Focus on in vitro cell models. Toxicol In Vitro 2020; 65:104818. [PMID: 32135238 DOI: 10.1016/j.tiv.2020.104818] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 02/05/2020] [Accepted: 02/28/2020] [Indexed: 01/20/2023]
Abstract
Cigarette smoke (CS) is one of the most important preventable risk factors for the development of respiratory diseases, cardiovascular diseases, stroke, and various types of cancer. Due to its high intracellular concentration and central role in maintaining the cellular redox state, glutathione (GSH) is one of the key players in several enzymatic and non-enzymatic reactions necessary for protecting cells against CS-induced oxidative stress. A plethora of in vitro cell models have been used over the years to assess the effects of CS on intracellular GSH and its disulphide forms, i.e. glutathione disulphide (GSSG) and S-glutathionylated proteins. In this review, we described the effects of cell exposure to CS on cellular GSH and formation of its oxidized forms and adducts (GSH-conjugates). We also discussed the limitations and relevance of in vitro cell models of exposure to CS and critically assessed the congruence between smokers and in vitro cell models. What emerges clearly is that results obtained in vitro should be interpreted with extreme caution, bearing in mind the limitations of the specific cell model used. Despite this, in vitro cell models remain important tools in the assessment of CS-induced oxidative damage.
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Affiliation(s)
- Isabella Dalle-Donne
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy.
| | - Maria L Garavaglia
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Graziano Colombo
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Emanuela Astori
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
| | - Maria C Lionetti
- Center for Complexity and Biosystems, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy
| | - Caterina A M La Porta
- Center for Complexity and Biosystems, Department of Environmental Science and Policy, Università degli Studi di Milano, via Celoria 26, 20133 Milano, Italy
| | - Annalisa Santucci
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Ranieri Rossi
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Daniela Giustarini
- Department of Biotechnology, Chemistry and Pharmacy (Department of Excellence 2018-2022), University of Siena, Via A. Moro 2, 53100 Siena, Italy
| | - Aldo Milzani
- Department of Biosciences (Department of Excellence 2018-2022), Università degli Studi di Milano, via Celoria, 26, 20133 Milano, Italy
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26
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Zhang XF, Ding MJ, Cheng C, Zhang Y, Xiang SY, Lu J, Liu ZB. Andrographolide attenuates oxidative stress injury in cigarette smoke extract exposed macrophages through inhibiting SIRT1/ERK signaling. Int Immunopharmacol 2020; 81:106230. [PMID: 32032850 DOI: 10.1016/j.intimp.2020.106230] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2019] [Revised: 01/03/2020] [Accepted: 01/19/2020] [Indexed: 10/25/2022]
Abstract
Andrographolide (AG), an ingredient extracted from traditional Chinese herbal medicine Andrographis paniculata, has been demonstrated to have potent anti-inflammatory and anti-oxidative stress properties. The purpose of this study was to investigate whether and how AG attenuated CSE-induced mitochondrial dysfunction, inflammation and oxidative stress in RAW 264.7 cells (a mouse macrophages line). The results showed that AG significantly reduced CSE-induced upregulation of pro-inflammatory cytokines (i.e., TNF-α and IL-1β) in the RAW 264.7 cells. AG inhibited CSE-induced production of reactive oxygen species (ROS) and prevented the reduction of superoxide dismutase (SOD) and glutathione/oxidized glutathione (GSH/GSSG) ratio, indicating the anti-oxidative stress effects of AG in macrophages. AG also improved mitochondrial function and mitochondrial membrane potential. In addition, AG inhibited CSE-induced increase of heme oxygenase (HO)-1, matrix metalloproteinase (MMP)-9 and MMP-12. Moreover, AG increased SIRT1 transcription and expression, suggesting AG inhibits mitochondrial dysfunction, inflammation and oxidative stress via a SIRT1 dependent signaling. We also demonstrated that AG inhibited CSE-induced ERK phosphorylation, and treatment with PD980589, a ERK inhibitor, reversed CSE-induced inflammation and oxidative stress. These results indicated that AG may prevent COPD via the inhibition of SIRT1/ERK signaling pathway, and subsequently inhibition of mitochondrial dysfunction, inflammation, and oxidative stress in macrophages.
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Affiliation(s)
- Xin-Fang Zhang
- Physiology Department, College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Ming-Jing Ding
- Department of Pulmonary and Critical Care Medicine, Chifeng Municipal Hospital, Chifeng Clinical Medical School of Inner Mongolia Medical University, Inner Mongolia 204000, China
| | - Chen Cheng
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; College of Acupuncture and Tuina, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Yi Zhang
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; College of Acupuncture and Tuina, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Shui-Ying Xiang
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; College of Acupuncture and Tuina, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Jing Lu
- Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China
| | - Zi-Bing Liu
- Physiology Department, College of Integrated Chinese and Western Medicine, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; Key Laboratory of Xin'an Medicine, Ministry of Education, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China; College of Acupuncture and Tuina, Anhui University of Chinese Medicine, Hefei, Anhui 230038, China.
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27
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Sun X, Shang J, Wu A, Xia J, Xu F. Identification of dynamic signatures associated with smoking-related squamous cell lung cancer and chronic obstructive pulmonary disease. J Cell Mol Med 2019; 24:1614-1625. [PMID: 31829519 PMCID: PMC6991676 DOI: 10.1111/jcmm.14852] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2019] [Revised: 08/27/2019] [Accepted: 09/05/2019] [Indexed: 01/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a risk factor for the development of lung cancer. The aim of this study was to identify early diagnosis biomarkers for lung squamous cell carcinoma (SQCC) in COPD patients and to determine the potential pathogenetic mechanisms. The GSE12472 data set was downloaded from the Gene Expression Omnibus database. Differentially co‐expressed links (DLs) and differentially expressed genes (DEGs) in both COPD and normal tissues, or in both SQCC + COPD and COPD samples were used to construct a dynamic network associated with high‐risk genes for the SQCC pathogenetic process. Enrichment analysis was performed based on Gene Ontology annotations and Kyoto Encyclopedia of Genes and Genomes pathway analysis. We used the gene expression data and the clinical information to identify the co‐expression modules based on weighted gene co‐expression network analysis (WGCNA). In total, 205 dynamic DEGs, 5034 DLs and one pathway including CDKN1A, TP53, RB1 and MYC were found to have correlations with the pathogenetic progress. The pathogenetic mechanisms shared by both SQCC and COPD are closely related to oxidative stress, the immune response and infection. WGCNA identified 11 co‐expression modules, where magenta and black were correlated with the “time to distant metastasis.” And the “surgery due to” was closely related to the brown and blue modules. In conclusion, a pathway that includes TP53, CDKN1A, RB1 and MYC may play a vital role in driving COPD towards SQCC. Inflammatory processes and the immune response participate in COPD‐related carcinogenesis.
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Affiliation(s)
- Xiaoru Sun
- Department of Infectious Diseases, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jingzhe Shang
- Center of Systems Medicine, Chinese Academy of Medical Science (CAMS), Suzhou Institute of System Medicine, Suzhou, China
| | - Aiping Wu
- Center of Systems Medicine, Chinese Academy of Medical Science (CAMS), Suzhou Institute of System Medicine, Suzhou, China
| | - Jingyan Xia
- Department of Radiation Oncology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Feng Xu
- Department of Infectious Diseases, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
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28
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Chia SB, Elko EA, Aboushousha R, Manuel AM, van de Wetering C, Druso JE, van der Velden J, Seward DJ, Anathy V, Irvin CG, Lam YW, van der Vliet A, Janssen-Heininger YMW. Dysregulation of the glutaredoxin/ S-glutathionylation redox axis in lung diseases. Am J Physiol Cell Physiol 2019; 318:C304-C327. [PMID: 31693398 DOI: 10.1152/ajpcell.00410.2019] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Glutathione is a major redox buffer, reaching millimolar concentrations within cells and high micromolar concentrations in airways. While glutathione has been traditionally known as an antioxidant defense mechanism that protects the lung tissue from oxidative stress, glutathione more recently has become recognized for its ability to become covalently conjugated to reactive cysteines within proteins, a modification known as S-glutathionylation (or S-glutathiolation or protein mixed disulfide). S-glutathionylation has the potential to change the structure and function of the target protein, owing to its size (the addition of three amino acids) and charge (glutamic acid). S-glutathionylation also protects proteins from irreversible oxidation, allowing them to be enzymatically regenerated. Numerous enzymes have been identified to catalyze the glutathionylation/deglutathionylation reactions, including glutathione S-transferases and glutaredoxins. Although protein S-glutathionylation has been implicated in numerous biological processes, S-glutathionylated proteomes have largely remained unknown. In this paper, we focus on the pathways that regulate GSH homeostasis, S-glutathionylated proteins, and glutaredoxins, and we review methods required toward identification of glutathionylated proteomes. Finally, we present the latest findings on the role of glutathionylation/glutaredoxins in various lung diseases: idiopathic pulmonary fibrosis, asthma, and chronic obstructive pulmonary disease.
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Affiliation(s)
- Shi B Chia
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Evan A Elko
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Reem Aboushousha
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Allison M Manuel
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Cheryl van de Wetering
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Joseph E Druso
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Jos van der Velden
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - David J Seward
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Vikas Anathy
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
| | - Charles G Irvin
- Department of Medicine, University of Vermont, Burlington, Vermont
| | - Ying-Wai Lam
- Department of Biology, University of Vermont, Burlington, Vermont
| | - Albert van der Vliet
- Department of Pathology and Laboratory Medicine, University of Vermont, Burlington, Vermont
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29
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Prange R, Thiedmann M, Bhandari A, Mishra N, Sinha A, Häsler R, Rosenstiel P, Uliczka K, Wagner C, Yildirim AÖ, Fink C, Roeder T. A Drosophila model of cigarette smoke induced COPD identifies Nrf2 signaling as an expedient target for intervention. Aging (Albany NY) 2019; 10:2122-2135. [PMID: 30153653 PMCID: PMC6128429 DOI: 10.18632/aging.101536] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 08/21/2018] [Indexed: 01/06/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is among the most important causes of death. Signaling systems that are relevant for tissue repair and detoxification of reactive oxygen species or xenobiotics are thought to be impaired in lungs of patients suffering from this disease. Here, we developed a simple cigarette smoke induced Drosophila model of COPD based on chronic cigarette smoke exposure that recapitulates major pathological hallmarks of the disease and thus can be used to investigate new therapeutic strategies. Chronic cigarette smoke exposure led to premature death of the animals and induced a set of phenotypes reminiscent of those seen in COPD patients, including reduced physical activity, reduced body fat, increased metabolic rate and a substantial reduction of the respiratory surface. A detailed transcriptomic analysis revealed that especially the TGF-β, Nrf2 and the JAK/STAT signaling pathways are altered by chronic cigarette smoke exposure. Based on these results, we focused on Nrf2 signaling. A pharmacological intervention study performed with oltipraz, an activator of Nrf2 signaling, increased survival of cigarette smoke exposed animals significantly. Thus, the Drosophila COPD model recapitulates many major hallmarks of COPD and it is highly useful to evaluate the potential of alternative therapeutic strategies.
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Affiliation(s)
- Ruben Prange
- Kiel University, Zoology, Department of Molecular Physiology, Kiel, Germany
| | - Marcus Thiedmann
- Kiel University, Zoology, Department of Molecular Physiology, Kiel, Germany
| | - Anita Bhandari
- Kiel University, Zoology, Department of Molecular Physiology, Kiel, Germany.,University zu Lübeck, Institute for Cardiogenetics, Lübeck, Germany
| | | | | | | | | | - Karin Uliczka
- Research Center Borstel, Invertebrate Models, Borstel, Germany
| | | | - Ali Önder Yildirim
- Comprehensive Pneumology Center, Institute of Lung Biology and Disease, Helmholtz Center Munich, German Research Center for Environmental Health, Munich, Germany.,CPC-M, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Christine Fink
- Kiel University, Zoology, Department of Molecular Physiology, Kiel, Germany.,Airway Research Center North, Member of the German Center for Lung Research (DZL), Grosshansdorf, Germany
| | - Thomas Roeder
- Kiel University, Zoology, Department of Molecular Physiology, Kiel, Germany.,Airway Research Center North, Member of the German Center for Lung Research (DZL), Grosshansdorf, Germany
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30
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Arancini L, Bortolasci CC, Dodd S, Dean OM, Berk M. N-acetylcysteine for cessation of tobacco smoking: rationale and study protocol for a randomised controlled trial. Trials 2019; 20:555. [PMID: 31500670 PMCID: PMC6734392 DOI: 10.1186/s13063-019-3628-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/31/2019] [Indexed: 11/19/2022] Open
Abstract
Background Tobacco smoking is a highly prevalent, addictive behaviour and a key public health priority. However available cessation therapies have low quit and high relapse rates, indicating an urgent need for more effective treatments. Predicated on promising preclinical and pilot clinical data, this paper presents a rationale and protocol for the trial of N-acetylcysteine (NAC) as a novel anti-craving smoking cessation aid. Methods Current smokers (n = 120) of at least 10 cigarettes a day are recruited through online advertisements, print publications and dissemination of flyers. Participants are randomised on a 1:1 ratio to receive either 16-week treatment of 1.8 g/day of NAC or placebo with all participants receiving quit support from the online QuitCoach tool. Participants are attending visits at baseline, 8 and 16 weeks with a 42-week post-discontinuation follow-up. The primary outcome measure is sustained abstinence at six months after treatment based on self-reported rating scales and confirmed by exhaled carbon monoxide and salivary cotinine levels. Secondary outcomes are timing of the first lapse and relapse, between-group cigarette consumption, withdrawal symptoms, general wellbeing and mood/anxiety symptoms. Between-group differences in adverse events and subgroup analyses for variables including gender and Diagnostic Statistics Manual 5 diagnostics will also be investigated. Discussion The planned trial addresses an issue of major importance to human health and, if an effect is shown, may result in substantial changes to the management of smoking and nicotine addiction with overt public health implications. Trial registration Australian New Zealand Clinical Trials registry (ANZCTR), ACTRN12617001478303. Registered on 19 October 2017. Electronic supplementary material The online version of this article (10.1186/s13063-019-3628-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Lauren Arancini
- IMPACT Strategic Resource Centre, School of Medicine, Deakin University, P.O. Box 281, Geelong, VIC, 3220, Australia.
| | - Chiara C Bortolasci
- Centre for Molecular and Medical Research, School of Medicine, Deakin University, Geelong, VIC, Australia
| | - Seetal Dodd
- IMPACT Strategic Resource Centre, School of Medicine, Deakin University, P.O. Box 281, Geelong, VIC, 3220, Australia.,Barwon Health, University Hospital Geelong, Geelong, VIC, Australia.,Department of Psychiatry, The University of Melbourne, Parkville, VIC, Australia.,Orygen, the National Centre for Excellence in Youth Mental Health, Parkville, VIC, Australia
| | - Olivia M Dean
- IMPACT Strategic Resource Centre, School of Medicine, Deakin University, P.O. Box 281, Geelong, VIC, 3220, Australia.,Barwon Health, University Hospital Geelong, Geelong, VIC, Australia.,Department of Psychiatry, The University of Melbourne, Parkville, VIC, Australia.,Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
| | - Michael Berk
- IMPACT Strategic Resource Centre, School of Medicine, Deakin University, P.O. Box 281, Geelong, VIC, 3220, Australia.,Barwon Health, University Hospital Geelong, Geelong, VIC, Australia.,Department of Psychiatry, The University of Melbourne, Parkville, VIC, Australia.,Orygen, the National Centre for Excellence in Youth Mental Health, Parkville, VIC, Australia.,Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia
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Corbett SE, Nitzberg M, Moses E, Kleerup E, Wang T, Perdomo C, Perdomo C, Liu G, Xiao X, Liu H, Elashoff DA, Brooks DR, O'Connor GT, Dubinett SM, Spira A, Lenburg ME. Gene Expression Alterations in the Bronchial Epithelium of e-Cigarette Users. Chest 2019; 156:764-773. [PMID: 31233743 DOI: 10.1016/j.chest.2019.05.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2018] [Revised: 05/13/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND Although e-cigarette (ECIG) use has increased in the United States, their potential health effects remain uncertain. Understanding the effects of tobacco cigarette (TCIG) smoke on bronchial airway epithelial gene expression have previously provided insights into tobacco-related disease pathogenesis. Identifying the impact of ECIGs on airway gene expression could provide insights into their potential long-term health effects. We sought to compare the bronchial airway gene-expression profiles of former TCIG smokers now using ECIGs with the profiles of former and current TCIG smokers. METHODS We performed gene-expression profiling of bronchial epithelial cells collected from current TCIG smokers (n = 9), current ECIG users who are former TCIG smokers (n = 15), and former TCIG smokers (n = 21). We then compared our findings with previous studies of the effects of TCIG use on bronchial epithelium, as well an in vitro model of ECIG exposure. RESULTS Among 3,165 genes whose expression varied between the three study groups (q < 0.05), we identified 468 genes altered in ECIG users relative to former smokers (P < .05). Seventy-nine of these genes were up- or down-regulated concordantly among ECIG and TCIG users. We did not detect ECIG-associated gene-expression changes in known pathways associated with TCIG usage. Genes downregulated in ECIG users are enriched among the genes most downregulated by exposure of airway epithelium to ECIG vapor in vitro. CONCLUSIONS ECIGs induce both distinct and shared patterns of gene expression relative to TCIGs in the bronchial airway epithelium. The concordance of the genes altered in ECIG users and in the in vitro study suggests that genes altered in ECIG users are likely to be changed as the direct effect of ECIG exposure.
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Affiliation(s)
- Sean E Corbett
- Bioinformatics Program, Boston University, Boston, MA; Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Matthew Nitzberg
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA; Pulmonary Center, Boston University School of Medicine, Boston, MA
| | - Elizabeth Moses
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Eric Kleerup
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Teresa Wang
- Bioinformatics Program, Boston University, Boston, MA; Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Catalina Perdomo
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Claudia Perdomo
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Gang Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Xiaohui Xiao
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - Hanqiao Liu
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
| | - David A Elashoff
- Department of Biostatistics, University of California, Los Angeles, CA
| | - Daniel R Brooks
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA; Department of Epidemiology, Boston University School of Public Health, Boston, MA
| | - George T O'Connor
- Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA; Pulmonary Center, Boston University School of Medicine, Boston, MA
| | - Steven M Dubinett
- Division of Pulmonary and Critical Care Medicine, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA
| | - Avrum Spira
- Bioinformatics Program, Boston University, Boston, MA; Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA; Pulmonary Center, Boston University School of Medicine, Boston, MA; Johnson & Johnson, Cambridge, MA.
| | - Marc E Lenburg
- Bioinformatics Program, Boston University, Boston, MA; Section of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, Boston, MA
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Zhao J, Zhang Y, Sisler JD, Shaffer J, Leonard SS, Morris AM, Qian Y, Bello D, Demokritou P. Assessment of reactive oxygen species generated by electronic cigarettes using acellular and cellular approaches. JOURNAL OF HAZARDOUS MATERIALS 2018; 344:549-557. [PMID: 29102637 PMCID: PMC5848214 DOI: 10.1016/j.jhazmat.2017.10.057] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 10/11/2017] [Accepted: 10/27/2017] [Indexed: 05/11/2023]
Abstract
Electronic cigarettes (e-cigs) have fast increased in popularity but the physico-chemical properties and toxicity of the generated emission remain unclear. Reactive oxygen species (ROS) are likely present in e-cig emission and can play an important role in e-cig toxicity. However, e-cig ROS generation is poorly documented. Here, we generated e-cig exposures using a recently developed versatile exposure platform and performed systematic ROS characterization on e-cig emissions using complementary acellular and cellular techniques: 1) a novel acellular Trolox-based mass spectrometry method for total ROS and hydrogen peroxide (H2O2) detection, 2) electron spin resonance (ESR) for hydroxyl radical detection in an acellular and cellular systems and 3) in vitro ROS detection in small airway epithelial cells (SAEC) using the dihydroethidium (DHE) assay. Findings confirm ROS generation in cellular and acellular systems and is highly dependent on the e-cig brand, flavor, puffing pattern and voltage. Trolox method detected a total of 1.2-8.9nmol H2O2eq./puff; H2O2 accounted for 12-68% of total ROS. SAEC cells exposed to e-cig emissions generated up to eight times more ROS compared to control. The dependency of e-cig emission profile on e-cig features and operational parameters should be taken into consideration in toxicological studies.
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Affiliation(s)
- Jiayuan Zhao
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Boston, MA 02115, USA
| | - Yipei Zhang
- Department of Public Health, University of Massachusetts Lowell, MA 01854, USA
| | - Jennifer D Sisler
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA
| | - Justine Shaffer
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA
| | - Stephen S Leonard
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA
| | - Anna M Morris
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA
| | - Yong Qian
- Pathology and Physiology Research Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health (NIOSH), Morgantown, WV 26505, USA
| | - Dhimiter Bello
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Boston, MA 02115, USA; Department of Public Health, University of Massachusetts Lowell, MA 01854, USA.
| | - Philip Demokritou
- Department of Environmental Health, Center for Nanotechnology and Nanotoxicology, Harvard School of Public Health, Boston, MA 02115, USA.
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Muthumalage T, Pritsos K, Hunter K, Pritsos C. Commonly used air filters fail to eliminate secondhand smoke induced oxidative stress and inflammatory responses. Toxicol Mech Methods 2017; 27:458-466. [DOI: 10.1080/15376516.2017.1320694] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Thivanka Muthumalage
- Department of Agriculture, Nutrition and Veterinary Sciences, University of Nevada, Reno, NV, USA
- Environmental Sciences Program, University of Nevada, Reno, NV, USA
| | - Karen Pritsos
- Department of Agriculture, Nutrition and Veterinary Sciences, University of Nevada, Reno, NV, USA
| | - Kenneth Hunter
- Microbiology and Immunology, University of Nevada, Reno, NV, USA
| | - Chris Pritsos
- Department of Agriculture, Nutrition and Veterinary Sciences, University of Nevada, Reno, NV, USA
- Environmental Sciences Program, University of Nevada, Reno, NV, USA
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Burnham EL, McNally A, Gaydos J, Brown LAS. The Relationship Between Airway Antioxidant Levels, Alcohol Use Disorders, and Cigarette Smoking. Alcohol Clin Exp Res 2016; 40:2147-2160. [PMID: 27627733 DOI: 10.1111/acer.13201] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 07/27/2016] [Indexed: 02/06/2023]
Abstract
BACKGROUND Alcohol use disorders (AUDs) and cigarette smoking are associated with pulmonary oxidative stress, likely related to antioxidant depletion. Pulmonary oxidative stress may adversely affect innate immunity, leading to increased pneumonia susceptibility and severity, including development of the acute respiratory distress syndrome. In people with AUDs, most of whom smoke, antioxidant therapy can potentially restore immune cell function and attenuate pneumonia development. Challenges to human investigations of antioxidant therapies include an inability to identify pulmonary oxidative stress noninvasively and the optimal route to deliver pulmonary antioxidants. We sought to determine whether bronchoalveolar lavage (BAL) measures of thiol antioxidants from a 50-ml upper airway aliquot approximated those in the alveolar space and to determine whether AUDs and/or smoking affected these relationships. METHODS Healthy human subjects with and without AUDs, including smokers and nonsmokers, underwent BAL. Samples obtained after the first 50-ml normal saline aliquot were analyzed as representing bronchial airways; subsequent 50-ml aliquots were analyzed as representative of the alveolar space. Reduced and oxidized (GSSG) glutathione, cysteine (Cys), and its oxidized species, cystine, along with mixed disulfides (MDs) were quantified using high-performance liquid chromatography. The percent of total thiols present in their oxidized forms, and thiol redox potentials, were calculated. RESULTS Positive correlations between upper and lower BAL fluid thiol species were observed that were most robust for GSSG (ρ = 0.85), Cys (ρ = 0.83), and MDs (ρ = 0.69), but poor for thiol redox potential measures. In contrast to nonsmokers (either with or without AUDs), in subjects with AUDs who smoked, upper BAL fluid %GSSG, Cys, and MD measures were relatively increased compared to lower. CONCLUSIONS A small volume BAL procedure may be suitable to assess intrapulmonary oxidative stress related to thiol depletion. Factors including AUDs and smoking may disproportionately increase upper airways oxidative stress that could be relevant for therapeutic interventions.
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Affiliation(s)
- Ellen L Burnham
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado.
| | - Alicia McNally
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Jeanette Gaydos
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado School of Medicine, Aurora, Colorado
| | - Lou Ann S Brown
- Department of Pediatrics, Emory University School of Medicine, Atlanta, Georgia
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Taylor M, Carr T, Oke O, Jaunky T, Breheny D, Lowe F, Gaça M. E-cigarette aerosols induce lower oxidative stress in vitro when compared to tobacco smoke. Toxicol Mech Methods 2016; 26:465-476. [PMID: 27690198 DOI: 10.1080/15376516.2016.1222473] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 08/05/2016] [Accepted: 08/05/2016] [Indexed: 01/07/2023]
Abstract
Tobacco smoking is a risk factor for various diseases. The underlying cellular mechanisms are not fully characterized, but include oxidative stress, apoptosis, and necrosis. Electronic-cigarettes (e-cigarettes) have emerged as an alternative to and a possible means to reduce harm from tobacco smoking. E-cigarette vapor contains significantly lower levels of toxicants than cigarette smoke, but standardized methods to assess cellular responses to exposure are not well established. We investigated whether an in vitro model of the airway epithelium (human bronchial epithelial cells) and commercially available assays could differentiate cellular stress responses to aqueous aerosol extracts (AqE) generated from cigarette smoke and e-cigarette aerosols. After exposure to AqE concentrations of 0.063-0.500 puffs/mL, we measured the intracellular glutathione ratio (GSH:GSSG), intracellular generation of oxidant species, and activation of the nuclear factor erythroid-related factor 2 (Nrf2)-controlled antioxidant response elements (ARE) to characterize oxidative stress. Apoptotic and necrotic responses were characterized by increases in caspase 3/7 activity and reductions in viable cell protease activities. Concentration-dependent responses indicative of oxidative stress were obtained for all endpoints following exposure to cigarette smoke AqE: intracellular generation of oxidant species increased by up to 83%, GSH:GSSG reduced by 98.6% and transcriptional activation of ARE increased by up to 335%. Caspase 3/7 activity was increased by up to 37% and the viable cell population declined by up to 76%. No cellular stress responses were detected following exposure to e-cigarette AqE. The methods used were suitably sensitive to be employed for comparative studies of tobacco and nicotine products.
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Affiliation(s)
- Mark Taylor
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Tony Carr
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Oluwatobiloba Oke
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Tomasz Jaunky
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Damien Breheny
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Frazer Lowe
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
| | - Marianna Gaça
- a Research and Development Center, British American Tobacco Plc , Southampton , UK
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Bacterial Metabolism in the Host Environment: Pathogen Growth and Nutrient Assimilation in the Mammalian Upper Respiratory Tract. Microbiol Spectr 2016; 3. [PMID: 26185081 DOI: 10.1128/microbiolspec.mbp-0007-2014] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Pathogens evolve in specific host niches and microenvironments that provide the physical and nutritional requirements conducive to their growth. In addition to using the host as a source of food, bacterial pathogens must avoid the immune response to their presence. The mammalian upper respiratory tract is a site that is exposed to the external environment, and is readily colonized by bacteria that live as resident flora or as pathogens. These bacteria can remain localized, descend to the lower respiratory tract, or traverse the epithelium to disseminate throughout the body. By virtue of their successful colonization of the respiratory epithelium, these bacteria obtain the nutrients needed for growth, either directly from host resources or from other microbes. This chapter describes the upper respiratory tract environment, including its tissue and mucosal structure, prokaryotic biota, and biochemical composition that would support microbial life. Neisseria meningitidis and the Bordetella species are discussed as examples of bacteria that have no known external reservoirs but have evolved to obligately colonize the mammalian upper respiratory tract.
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An ERp57-mediated disulphide exchange promotes the interaction between Burkholderia cenocepacia and epithelial respiratory cells. Sci Rep 2016; 6:21140. [PMID: 26879174 PMCID: PMC4754759 DOI: 10.1038/srep21140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 01/19/2016] [Indexed: 01/29/2023] Open
Abstract
Previous studies have demonstrated that extracellular glutathione reduces the ability of the Cystic Fibrosis pathogen Burkholderia cenocepacia to infect primary or immortalized epithelial respiratory cells. We report here that the adhesion and invasion ability of B. cenocepacia is limited also by thiol-oxidizing and disulphide-reducing agents and by protein disulfide isomerase (PDI) inhibitors. PDI inhibitors also reduce the proinflammatory response elicited by cells in response to Burkholderia. These findings indicate that a membrane-associated PDI catalyzes thiol/disulphide exchange reactions which favor bacterial infection. The combined use of selective PDI inhibitors, RNA silencing and specific antibodies identified ERp57 as a major PDI involved in the interaction between B. cenocepacia and epithelial cells. This study contributes to the elucidation of the Burkholderia pathogenic mechanisms by showing that this microorganism exploits a membrane-associated host protein to infect epithelial cells and identifies ERp57 as a putative pharmacological target for the treatment of Burkholderia lung infections.
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38
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Mons U, Muscat JE, Modesto J, Richie JP, Brenner H. Effect of smoking reduction and cessation on the plasma levels of the oxidative stress biomarker glutathione--Post-hoc analysis of data from a smoking cessation trial. Free Radic Biol Med 2016; 91:172-7. [PMID: 26708755 PMCID: PMC4761461 DOI: 10.1016/j.freeradbiomed.2015.12.018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 12/15/2015] [Accepted: 12/17/2015] [Indexed: 11/22/2022]
Abstract
Cigarette smoke contains high concentrations of free radical components that induce oxidative stress. Smoking-induced oxidative stress is thought to contribute to chronic obstructive pulmonary disease, cardiovascular disease and lung cancer through degenerative processes in the lung and other tissues. It is uncertain however whether smoking cessation lowers the burden of oxidative stress. We used data from a randomized controlled cessation trial of 434 current smokers for a post-hoc examination of the effects of smoking cessation on blood plasma levels of total glutathione (tGSH), the most abundant endogenous antioxidant in cells, and total cysteine (tCys), an amino acid and constituent of glutathione. Smoking status was validated based on serum cotinine levels. Multivariate linear mixed models were fitted to examine the association of smoking cessation and change in cigarette consumption with tGSH and tCys. After 12 months follow-up, quitters (n=55) had significantly increased levels of tGSH compared to subjects who continued to smoke (P<0.01). No significant change in tGSH was found for subjects who continued to smoke but reduced their intensity of smoking. No significant effect of smoking cessation or reduction was observed on levels of tCys. These results suggest that smoking cessation but not smoking reduction reduces levels of oxidative stress.
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Affiliation(s)
- Ute Mons
- German Cancer Research Center (DKFZ), Division of Clinical Epidemiology and Aging Research, Heidelberg, Germany.
| | - Joshua E Muscat
- Pennsylvania State University College of Medicine, Department of Public Health Sciences, Hershey, PA, USA
| | - Jennifer Modesto
- Pennsylvania State University College of Medicine, Department of Public Health Sciences, Hershey, PA, USA
| | - John P Richie
- Pennsylvania State University College of Medicine, Department of Public Health Sciences, Hershey, PA, USA
| | - Hermann Brenner
- German Cancer Research Center (DKFZ), Division of Clinical Epidemiology and Aging Research, Heidelberg, Germany; Division of Preventive Oncology, German Cancer Research Center (DKFZ) and National Center for Tumor Diseases (NCT), Heidelberg, Germany; German Cancer Consortium (DKTK), German Cancer Research Center (DKFZ), Heidelberg, Germany
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Lico A Enhances Nrf2-Mediated Defense Mechanisms against t-BHP-Induced Oxidative Stress and Cell Death via Akt and ERK Activation in RAW 264.7 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:709845. [PMID: 26576227 PMCID: PMC4630662 DOI: 10.1155/2015/709845] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 01/28/2015] [Accepted: 02/07/2015] [Indexed: 01/22/2023]
Abstract
Licochalcone A (Lico A) exhibits various biological properties, including anti-inflammatory and antioxidant activities. In this study, we investigated the antioxidative potential and mechanisms of Lico A against tert-butyl hydroperoxide- (t-BHP-) induced oxidative damage in RAW 264.7 cells. Our results indicated that Lico A significantly inhibited t-BHP-induced cytotoxicity, apoptosis, and reactive oxygen species (ROS) generation and reduced glutathione (GSH) depletion but increased the glutamate-cysteine ligase modifier (GCLM) subunit and the glutamate-cysteine ligase catalytic (GCLC) subunit genes expression. Additionally, Lico A dramatically upregulated the antioxidant enzyme heme oxygenase 1 (HO-1) and nuclear factor erythroid 2-related factor 2 (Nrf2), which were associated with inducing Nrf2 nuclear translocation, decreasing Keap1 protein expression and increasing antioxidant response element (ARE) promoter activity. Lico A also obviously induced the activation of serine/threonine kinase (Akt) and extracellular signal-regulated kinase (ERK), but PI3K/Akt and ERK inhibitors treatment displayed clearly decreased levels of LicoA-induced Nrf2 nuclear translocation and HO-1 expression, respectively. Furthermore, Lico A treatment markedly attenuated t-BHP-induced oxidative damage, which was reduced by treatment with PI3K/Akt, ERK, and HO-1 inhibitors. Therefore, Lico A might have a protective role against t-BHP-induced cytotoxicity by modulating HO-1 and by scavenging ROS via the activation of the PI3K/Akt and ERK/Nrf2 signaling pathways.
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Application of CE-MS to a metabonomics study of human urine from cigarette smokers and non-smokers. Bioanalysis 2015; 6:2733-49. [PMID: 25413705 DOI: 10.4155/bio.14.136] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Novel biomarkers of exposure and early adverse effects are needed for comparative studies of combustible and non-combustible tobacco products for regulatory authority evaluation. Metabolic biomarkers reflect both gene and environmental effects. RESULTS CE-MS has been applied to human urine samples from non-smokers and smokers of cigarettes at two tar levels. Validated chemometric models were able to separate smokers from non-smokers, with discrimination mainly based on the presence of nicotine metabolites. With these removed, it still proved possible to discriminate smokers from non-smokers with models now based on endogenous metabolites. The biochemical relevance of these biomarkers is discussed. CONCLUSION This proof-of-principle metabonomics study illustrates the potential of CE-MS to discover novel biomarkers in urine from tobacco users.
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Gould NS, Min E, Huang J, Chu HW, Good J, Martin RJ, Day BJ. Glutathione Depletion Accelerates Cigarette Smoke-Induced Inflammation and Airspace Enlargement. Toxicol Sci 2015; 147:466-74. [PMID: 26149495 DOI: 10.1093/toxsci/kfv143] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The study objective was to assess age-related changes in glutathione (GSH) adaptive response to cigarette smoke (CS) exposure. Older cigarette smokers show a decline (67%) in lung epithelial lining fluid (ELF) GSH and a 1.8-fold decreased GSH adaptive response to cigarette smoking with a concomitant elevation (47%) of exhaled nitric oxide compared with younger smokers. In order to isolate the changes in tissue GSH from other age-related effects, pharmacological inhibition of the rate limiting step in GSH synthesis was employed to examine the lung's response to CS exposure in young mice. The γ-glutamylcysteine ligase inhibitor L-buthionine-sulfoximine (BSO) was administered in the drinking water (20 mM) to decrease by half the in vivo GSH levels to those found in aged mice and humans. Mice were then exposed to CS (3 h/day) for 5 or 15 days. Biochemical analysis of the ELF and lung tissue revealed an inhibition of the CS-induced GSH adaptive response by BSO with a concurrent increase in mixed protein-GSH disulfides indicating increased cysteine oxidation. The prevention of the GSH adaptive response led to an increase in pro-inflammatory cytokines present in the lung. Airspace enlargement is a hallmark of lung emphysema and was observed in mice treated with BSO and exposed to CS for as little as 15 days, whereas these types of changes normally take up to 6 months in this model. BSO treatment potentiated both lung elastase and matrix metalloproteinase activity in the CS group. These data suggest that age-related decline in the GSH adaptive response can markedly accelerate many of the factors thought to drive CS-induced emphysema.
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Affiliation(s)
- Neal S Gould
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206; Departments of Pharmaceutical Sciences
| | - Elysia Min
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206
| | - Jie Huang
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206
| | - Hong Wei Chu
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206; Medicine and Immunology, University of Colorado at Denver, Aurora, Colorado 80045
| | - Jim Good
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206
| | - Richard J Martin
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206; Medicine and
| | - Brian J Day
- *Department of Medicine, National Jewish Health, Denver, Colorado 80206; Departments of Pharmaceutical Sciences, Medicine and Immunology, University of Colorado at Denver, Aurora, Colorado 80045
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Prado E, Maes M, Piccoli LG, Baracat M, Barbosa DS, Franco O, Dodd S, Berk M, Vargas Nunes SO. N-acetylcysteine for therapy-resistant tobacco use disorder: a pilot study. Redox Rep 2015; 20:215-22. [PMID: 25729878 DOI: 10.1179/1351000215y.0000000004] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022] Open
Abstract
INTRODUCTION N-Acetylcysteine (NAC) may have efficacy in treating tobacco use disorder (TUD) by reducing craving and smoking reward. This study examines whether treatment with NAC may have a clinical efficacy in the treatment of TUD. METHODS A 12-week double blind randomized controlled trial was conducted to compare the clinical efficacy of NAC 3 g/day versus placebo. We recruited 34 outpatients with therapy resistant TUD concurrently treated with smoking-focused group behavioral therapy. Participants had assessments of daily cigarette use (primary outcome), exhaled carbon monoxide (CO(EXH)) (secondary outcome), and quit rates as defined by CO(EXH) < 6 ppm. Depression was measured with the Hamilton Depression Rating Scale (HDRS). Data were analyzed using conventional and modified intention-to-treat endpoint analyses. RESULTS NAC treatment significantly reduced the daily number of cigarettes used (Δ mean ± SD = -10.9 ± 7.9 in the NAC-treated versus -3.2 ± 6.1 in the placebo group) and CO(EXH) (Δ mean ± SD = -10.4 ± 8.6 ppm in the NAC-treated versus -1.5 ± 4.5 ppm in the placebo group); 47.1% of those treated with NAC versus 21.4% of placebo-treated patients were able to quit smoking as defined by CO(EXH) < 6 ppm. NAC treatment significantly reduced the HDRS score in patients with tobacco use disorder. CONCLUSIONS These data show that treatment with NAC may have a clinical efficacy in TUD. NAC combined with appropriate psychotherapy appears to be an efficient treatment option for TUD.
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Itoh M, Tsuji T, Nakamura H, Yamaguchi K, Fuchikami JI, Takahashi M, Morozumi Y, Aoshiba K. Systemic effects of acute cigarette smoke exposure in mice. Inhal Toxicol 2014; 26:464-73. [PMID: 24932561 DOI: 10.3109/08958378.2014.917346] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
CONTEXT Cigarette smoke (CS) causes both pulmonary and extrapulmonary disorders. OBJECTIVE To determine the pulmonary and extrapulmonary effects of acute CS exposure in regard to inflammation, oxidative stress and DNA damage. MATERIALS AND METHODS Mice were exposed to CS for 10 days and then their lungs, heart, liver, pancreas, kidneys, gastrocnemius muscle and subcutaneous (inguinal and flank) and visceral (retroperitoneum and periuterus) adipose tissues were excised. Bronchoalveolar lavage fluid samples were obtained for differential cell analysis. Inflammatory cell infiltration of the tissues was assessed by immunohistochemistry for Mac-3(+) cells, F4/80(+) cells and CD45(+) cells. Oxidative stress was determined by immunohistochemistry for thymidine glycol (a marker of DNA peroxidation) and 4-hydroxy hexenal (a marker of lipid peroxidation), by enzyme-linked immunosorbent assay for protein carbonyls (a marker of protein peroxidation) and by measurements of enzyme activities of glutathione peroxidase, superoxide dismutase and catalase. DNA double-strand breaks were assessed by immunohistochemistry for γH2AX. RESULTS CS exposure-induced inflammatory cell infiltration, oxidative stress and DNA damage in the lung. Neither inflammatory cell infiltration nor DNA damage was observed in any extrapulmonary organs. However, oxidative stress was increased in the heart and inguinal adipose tissue. DISCUSSIONS Induction of inflammatory cell infiltration and DNA damage by acute CS exposure was confined to the lung. However, an increased oxidative burden occurred in the heart and some adipose tissue, as well as in the lung. CONCLUSIONS Although extrapulmonary effects of CS are relatively modest compared with the pulmonary effects, some extrapulmonary organs are vulnerable to CS-induced oxidative stress.
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Affiliation(s)
- Masayuki Itoh
- Department of Respiratory Medicine, Tokyo Medical University Ibaraki Medical Center , Ibaraki , Japan
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Ben Moussa S, Sfaxi I, Tabka Z, Ben Saad H, Rouatbi S. Oxidative stress and lung function profiles of male smokers free from COPD compared to those with COPD: a case-control study. Libyan J Med 2014; 9:23873. [PMID: 24929061 PMCID: PMC4057786 DOI: 10.3402/ljm.v9.23873] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Revised: 05/14/2014] [Accepted: 05/15/2014] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND The mechanisms of smoking tobacco leading to chronic obstructive pulmonary disease (COPD) are beginning to be understood. However, conclusions about the role of blood or lung oxidative stress markers were disparate. AIMS To investigate the oxidative stress in blood or lung associated with tobacco smoke and to evaluate its effect on pulmonary function data and its relation with physical activity. METHODS It is a case-control study. Fifty-four male-smokers of more than five pack-years (PY) and aged 40-60 years were included (29 Non-COPD, 16 COPD). Physical activity score was determined. Blood sample levels of malondialdehyde (MDA), protein-cys-SH (PSH), and Glutathione (GSH) were measured. Fractional exhaled nitric oxide (FeNO) and plethysmographic measurements were performed. Correlation coefficients (r) evaluated the association between oxidative stress markers and independent variables (plethysmographic data and physical activity score). RESULTS Non-COPD (48 ± 6 years) and COPD (49 ± 5 years) groups had similar tobacco consumption patterns, that is, 27 ± 14 PY versus 30 ± 19 PY, respectively. Compared to the Non-COPD group, the COPD group had significantly lower levels of GSH and PSH, that is, mean ± SE were 40 ± 6 versus 25 ± 5 µg/mL and 54 ± 10 versus 26 ± 5 µg/g of hemoglobin, respectively. However, MDA level and FeNO values were similar. In the COPD group, none of the oxidative stress markers was significantly correlated with plethysmographic data or physical activity score. In the Non-COPD group, GSH was significantly correlated with physical activity score (r = 0.47) and PSH was significantly correlated with total lung capacity (TLC) (r = -0.50), residual volume (r = 0.41), and physical activity score (r = 0.62). FeNO was significantly correlated with TLC of the COPD group (r = -0.48). CONCLUSION Compared to the Non-COPD group, the COPD group had a marked decrease in blood antioxidant markers (GSH and PSH) but similar blood oxidant (MDA) or lung (FeNO) burden.
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Affiliation(s)
- Syrine Ben Moussa
- Service of Physiology and Functional Explorations, Farhat HACHED Hospital, Sousse, Tunisia;
| | - Ines Sfaxi
- Service of Physiology and Functional Explorations, Farhat HACHED Hospital, Sousse, Tunisia
| | - Zouhair Tabka
- Service of Physiology and Functional Explorations, Farhat HACHED Hospital, Sousse, Tunisia; Laboratory of Physiology, Faculty of Medicine of Sousse, University of Sousse, Sousse, Tunisia
| | - Helmi Ben Saad
- Service of Physiology and Functional Explorations, Farhat HACHED Hospital, Sousse, Tunisia; Laboratory of Physiology, Faculty of Medicine of Sousse, University of Sousse, Sousse, Tunisia; Research Unit: Secondary Prevention after Myocardial Infarction, Faculty of Medicine of Sousse, Sousse, Tunisia
| | - Sonia Rouatbi
- Service of Physiology and Functional Explorations, Farhat HACHED Hospital, Sousse, Tunisia; Laboratory of Physiology, Faculty of Medicine of Sousse, University of Sousse, Sousse, Tunisia
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Sapkota M, Hottor TK, DeVasure JM, Wyatt TA, McCaskill ML. Protective role of CYP2E1 inhibitor diallyl disulfide (DADS) on alcohol-induced malondialdehyde-deoxyguanosine (M1dG) adduct formation. Alcohol Clin Exp Res 2014; 38:1550-8. [PMID: 24891074 DOI: 10.1111/acer.12439] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/17/2014] [Indexed: 11/29/2022]
Abstract
BACKGROUND Alcohol use disorders are often associated with lung disease. Alcohol exposure leads to the production of reactive oxygen species, lipid peroxidation, and formation of malondialdehyde (MDA) as well as to induce the expression of cytochrome p450 2E1 (CYP2E1). Likewise, cigarette smoking can lead to lung lipid peroxidation and formation of MDA. MDA can bind to DNA forming MDA-deoxyguanosine (M1dG) adducts, which have been implicated in alcohol-related cancers and cardiovascular disease. Because CYP2E1 regulates MDA production, and our previous studies have shown that alcohol and cigarette smoke can lead to MDA formation, we hypothesized that CYP2E1 would modulate M1dG adduct formation and single-strand DNA damage in alcohol- and cigarette smoke-exposed lung cells and tissue. METHODS Normal human bronchial epithelial cells (HBECs) were pretreated with 10 μM diallyl disulfide (DADS) for 1 hour and treated with 80 mM ethanol (EtOH) ± 5% cigarette smoke extract (CSE) for 3 hours for comet assay and 6 hours for CYP2E1, MDA, and M1dG adduct assays. C57BL/6 mice were administered 20% EtOH ad libitum in drinking water for 8 weeks and exposed to whole-body cigarette smoke for 5 weeks. Mice were also fed a CYP2E1 inhibitor, DADS, at 1 μM/g of feed in their daily diet for 7 weeks. Whole lung tissue homogenate was used for CYP2E1, MDA, and M1dG adduct assays. RESULTS EtOH exposure significantly increased HBEC olive tail moment. DADS pretreatment of HBECs attenuated this EtOH effect. EtOH also induced MDA and M1dG adduct formation, which was also significantly reduced by DADS treatment. CSE ± EtOH did not enhance these effects. In lung tissue homogenate of 8-week alcohol-fed mice, MDA and M1dG adduct levels were significantly elevated in comparison with control mice and mice fed DADS while consuming alcohol. No increase in MDA and M1dG adduct formation was observed in 5-week cigarette smoke-exposed mice. CONCLUSIONS These findings suggest that CYP2E1 plays a pivotal role in alcohol-induced M1dG adducts, and the use of DADS as dietary supplement can reverse the effects of alcohol on M1dG formation.
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Affiliation(s)
- Muna Sapkota
- Department of Environmental, Agricultural and Occupational Health , College of Public Health, Omaha, Nebraska
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Yao H, Sundar IK, Ahmad T, Lerner C, Gerloff J, Friedman AE, Phipps RP, Sime PJ, McBurney MW, Guarente L, Rahman I. SIRT1 protects against cigarette smoke-induced lung oxidative stress via a FOXO3-dependent mechanism. Am J Physiol Lung Cell Mol Physiol 2014; 306:L816-28. [PMID: 24633890 DOI: 10.1152/ajplung.00323.2013] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Oxidative and carbonyl stress is increased in lungs of smokers and patients with chronic obstructive pulmonary disease (COPD), as well as in cigarette smoke (CS)-exposed rodent lungs. We previously showed that sirtuin1 (SIRT1), an antiaging protein, is reduced in lungs of CS-exposed mice and patients with COPD and that SIRT1 attenuates CS-induced lung inflammation and injury. It is not clear whether SIRT1 protects against CS-induced lung oxidative stress. Therefore, we determined the effect of SIRT1 on lung oxidative stress and antioxidants in response to CS exposure using loss- and gain-of-function approaches, as well as a pharmacological SIRT1 activation by SRT1720. We found that CS exposure increased protein oxidation and lipid peroxidation in lungs of wild-type (WT) mice, which was further augmented in SIRT1-deficient mice. Furthermore, both SIRT1 genetic overexpression and SRT1720 treatment significantly decreased oxidative stress induced by CS exposure. FOXO3 deletion augmented lipid peroxidation products but reduced antioxidants in response to CS exposure, which was not affected by SRT1720. Interestingly, SRT1720 treatment exhibited a similar effect on lipid peroxidation and antioxidants (i.e., manganese superoxide dismutase, heme oxygenase-1, and NADPH quinone oxidoreductase-1) in WT and nuclear factor (erythroid-derived 2)-like 2 (Nrf2)-deficient mice in response to CS exposure. This indicates that SIRT1 protects against CS-induced oxidative stress, which is mediated by FOXO3, but is independent of Nrf2. Overall, these findings reveal a novel function of SIRT1, which is to reduce CS-induced oxidative stress, and this may contribute to its protective effects against lung inflammation and subsequent development of COPD.
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Affiliation(s)
- Hongwei Yao
- Dept. of Environmental Medicine, Univ. of Rochester Medical Center, Box 850, 601 Elmwood Ave., Rochester, NY 14642.
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Messier EM, Day BJ, Bahmed K, Kleeberger SR, Tuder RM, Bowler RP, Chu HW, Mason RJ, Kosmider B. N-acetylcysteine protects murine alveolar type II cells from cigarette smoke injury in a nuclear erythroid 2-related factor-2-independent manner. Am J Respir Cell Mol Biol 2013; 48:559-67. [PMID: 23492188 PMCID: PMC3707381 DOI: 10.1165/rcmb.2012-0295oc] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2012] [Accepted: 11/30/2012] [Indexed: 11/24/2022] Open
Abstract
Emphysema is caused by the cigarette smoke (CS)-induced destruction of alveolar wall septa, and CS is the main risk factor for chronic obstructive pulmonary disease (COPD). To study the mechanisms of response to this insult, we focused on oxidant-induced lung injury and the potential role of nuclear erythroid 2-related factor-2 (Nrf2), which is a key regulator of the antioxidant defense system. We studied the protective role of N-acetylcysteine (NAC) against the injury of alveolar type II (ATII) cells induced by CS in vivo and in vitro. ATII cells were isolated and purified using magnetic MicroBeads (Miltenyi Biotec, Auburn, CA) from Nrf2(-/-) mice and wild-type mice. We analyzed pulmonary injury, inflammation, glutathione (GSH) concentrations, the expression of glutathione cysteine ligase catalytic subunit mRNA, glutathione cysteine ligase modifier subunit mRNA, and glutathione reductase mRNA, and Nrf2, heme oxygenase-1, and nicotinamide adenine dinucleotide phosphate-reduced:quinone oxireductase levels by Western blotting, TUNEL assay, and immunocytofluorescence for 4-hydroxynonenal as a marker of oxidative stress. We found that CS induced greater injury in ATII cells obtained from Nrf2(-/-) mice than from wild-type mice. Furthermore, NAC attenuated the injuries by CS in ATII cells obtained from wild-type mice both in vivo and in vitro. Moreover, NAC decreased the injury of ATII cells obtained from Nrf2(-/-) mice. Our results suggest that Nrf2-GSH signaling is important for the protective activity of NAC. In addition, in ATII cells deficient in Nrf2, this compound can provide partial protection through its reactive oxygen species-scavenging activities. Targeting the antioxidant system regulated by Nrf2 may provide an effective strategy against lung injury in COPD.
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Affiliation(s)
- Elise M Messier
- Department of Medicine, National Jewish Health, Denver, CO 80206, USA.
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Ballesteros A, Jiang P, Summerfelt A, Du X, Chiappelli J, O’Donnell P, Kochunov P, Hong LE. No evidence of exogenous origin for the abnormal glutathione redox state in schizophrenia. Schizophr Res 2013; 146:184-9. [PMID: 23466187 PMCID: PMC3622807 DOI: 10.1016/j.schres.2013.02.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2013] [Accepted: 02/04/2013] [Indexed: 11/29/2022]
Abstract
Schizophrenia has been associated with low glutathione (GSH), one of the most important substrates for natural defense against oxidative stress. This abnormality is often attributed to genetic or other pathological causes. However, low GSH in schizophrenia could also be due to insufficient antioxidant consumption or other exogenous factors. We evaluated GSH in relation to diet, smoking, and medication status in schizophrenia patients. We recruited 54 participants (29 schizophrenia patients and 25 normal controls). The Antioxidant Dietary Source Questions was used to estimate the total antioxidant capacity (TAC) from participants' diet. GSH and the oxidized form of glutathione (GSSG) were assayed. We found that GSH was significantly lower (p<0.001) while %GSSG was 2 to 5 fold higher (p = 0.023) in patients compared with controls. No evidence for lower TAC dietary intake was found in schizophrenia patients compared with controls; rather nominally higher TAC level was found in the patients diet (p = 0.02). Analysis of consumption of individual food categories also failed to find evidence of reduced dietary antioxidant intake in schizophrenia patients. Smoking and medications did not significantly predict the GSH deficit either. However, there was a significant smoking by diagnosis interaction on GSH (p = 0.026) such that smoking was associated with higher GSH level in controls while smoking in patients was not associated with this effect. Schizophrenia patients may have an impaired upregulation of GSH synthesis that normally occurs due to smoking-induced antioxidative response. Lower GSH was independently present in patients on clozapine (p = 0.005) and patients on other antipsychotics (p<0.001) compared with controls. In conclusion, none of the exogenous sources played a major role in explaining abnormalities in the glutathione pathway in patients. The state of abnormal glutathione redox may therefore be a part of schizophrenia pathophysiology.
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Affiliation(s)
- Alejandro Ballesteros
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA,Hospital Clínico de Salamanca, Department of Psychiatry. Calle de San Vicente, 182. 37007, Salamanca, Spain
| | - Pan Jiang
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA
| | - Ann Summerfelt
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA
| | - Xiaoming Du
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA
| | - Joshua Chiappelli
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA
| | - Patricio O’Donnell
- Department of Anatomy & Neurobiology and Psychiatry, University of Maryland School of Medicine. 685 West Baltimore Street, 21201, Baltimore, MD, USA
| | - Peter Kochunov
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA
| | - L. Elliot Hong
- Maryland Psychiatric Research Center, Department of Psychiatry, University of Maryland School of Medicine. 55 Wade Avenue, 21228, Catonsville, MD, USA,Address reprint requests to Dr. Hong, Maryland Psychiatric Research Center, P.O. Box 21247, Baltimore, MD 21228. Tel: 410 402 6828. Fax: 410 402 6023.
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Guan SP, Tee W, Ng DSW, Chan TK, Peh HY, Ho WE, Cheng C, Mak JC, Wong WSF. Andrographolide protects against cigarette smoke-induced oxidative lung injury via augmentation of Nrf2 activity. Br J Pharmacol 2013; 168:1707-18. [PMID: 23146110 PMCID: PMC3605877 DOI: 10.1111/bph.12054] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 10/30/2012] [Accepted: 11/01/2012] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Cigarette smoke is a major cause for chronic obstructive pulmonary disease (COPD). Andrographolide is an active biomolecule isolated from the plant Andrographis paniculata. Andrographolide has been shown to activate nuclear factor erythroid-2-related factor 2 (Nrf2), a redox-sensitive antioxidant transcription factor. As Nrf2 activity is reduced in COPD, we hypothesize that andrographolide may have therapeutic value for COPD. EXPERIMENTAL APPROACH Andrographolide was given i.p. to BALB/c mice daily 2h before 4% cigarette smoke exposure for 1h over five consecutive days. Bronchoalveolar lavage fluid and lungs were collected for analyses of cytokines, oxidative damage markers and antioxidant activities. BEAS-2B bronchial epithelial cells were exposed to cigarette smoke extract (CSE) and used to study the antioxidant mechanism of action of andrographolide. KEY RESULTS Andrographolide suppressed cigarette smoke-induced increases in lavage fluid cell counts; levels of IL-1β, MCP-1, IP-10 and KC; and levels of oxidative biomarkers 8-isoprostane, 8-OHdG and 3-nitrotyrosine in a dose-dependent manner. Andrographolide promoted inductions of glutathione peroxidase (GPx) and glutathione reductase (GR) activities in lungs from cigarette smoke-exposed mice. In BEAS-2B cells, andrographolide markedly increased nuclear Nrf2 accumulation, promoted binding to antioxidant response element (ARE) and total cellular glutathione level in response to CSE. Andrographolide up-regulated ARE-regulated gene targets including glutamate-cysteine ligase catalytic (GCLC) subunit, GCL modifier (GCLM) subunit, GPx, GR and heme oxygenase-1 in BEAS-2B cells in response to CSE. CONCLUSIONS Andrographolide possesses antioxidative properties against cigarette smoke-induced lung injury probably via augmentation of Nrf2 activity and may have therapeutic potential for treating COPD.
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Affiliation(s)
- S P Guan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University Health System, Singapore
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Takahashi Y, Horiyama S, Honda C, Suwa K, Nakamura K, Kunitomo M, Shimma S, Toyoda M, Sato H, Shizuma M, Takayama M. A chemical approach to searching for bioactive ingredients in cigarette smoke. Chem Pharm Bull (Tokyo) 2013; 61:85-9. [PMID: 23302590 DOI: 10.1248/cpb.c12-00539] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
Cigarette smoke, a collection of many toxic chemicals, contributes to the pathogenesis of smoking-related diseases such as chronic obstructive pulmonary disease and cancer. Much work has been done on the chemical analysis of ingredients in cigarette smoke, but there are few reports on the active ingredients that can modify biomolecules. We used a sensitive liquid chromatography-mass spectrometry (LC/MS) and LC/MS/MS method to show that L-tyrosine (Tyr), an amino acid with a highly reactive hydroxyl group, readily reacts with cigarette smoke extract (CSE) at body temperature (37°C) to form various Tyr derivatives. Among these derivatives were N-(3-oxobutyl)-Tyr and two acetylated compounds, N-acetyl-Tyr and O-acetyl-Tyr, which were synthesized by reaction of Tyr with methyl vinyl ketone and acetic anhydride, respectively, at 37°C. The presence of methyl vinyl ketone and acetic anhydride in CSE was confirmed by gas chromatography-mass spectrometry (GC/MS). These results indicate that Tyr can easily react with active ingredients in CSE. The present analytical methods should aid the search for active ingredients in cigarette smoke.
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Affiliation(s)
- Yuta Takahashi
- School of Pharmacy and Pharmaceutical Sciences, Mukogawa Women's University, 1-68 Koshien-Kyuban-cho, Nishinomiya, Hyogo 663-8179, Japan
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