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Milanović Ž, Jeremić S, Antonijević M, Dimić D, Nakarada Đ, Avdović E, Marković Z. The inhibitory potential of 4,7-dihydroxycoumarin derivatives on ROS-producing enzymes and direct HOO •/o 2• - radical scavenging activity - a comprehensive kinetic DFT study. Free Radic Res 2024:1-16. [PMID: 39264119 DOI: 10.1080/10715762.2024.2400674] [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: 06/08/2024] [Revised: 07/24/2024] [Accepted: 08/27/2024] [Indexed: 09/13/2024]
Abstract
This study examined the antiradical activity of three synthesized coumarin derivatives: (E)-3-(1-((2-hydroxyphenyl)amino)ethylidene)-2,4-dioxochroman-7-yl acetate (A1-OH), (E)-3-(1-((3-hydroxyphenyl)amino)ethylidene)-2,4-dioxochroman-7-yl acetate (A2-OH), and (E)-3-(1-((4-hydroxyphenyl)amino)ethylidene)-2,4-dioxochroman-7-yl acetate (A3-OH) against HOO•/O2•- radical species. The investigation included electron spin resonance (ESR) measurements and a DFT kinetic study. Thermodynamic and kinetic parameters of antiradical mechanisms-Formal Hydrogen Atom Transfer (f-HAT), Radical Adduct Formation (RAF), Sequential Proton Loss followed by Electron Transfer (SPLET), and Single-Electron Transfer followed by Proton Transfer (SET-PT)-were evaluated using the Quantum Mechanics-based test for Overall Free Radical Scavenging Activity (QM-ORSA) under physiological conditions. ESR results indicated antiradical activity decreased in the sequence A1-OH (58.7%) > A2-OH (57.5%) > A3-OH (53.1%). Kinetic analysis revealed the f-HAT mechanism dominated HOO• inactivation. A newly formulated Sequential Proton Loss followed by Radical Adduct Formation (SPL-RAF) mechanism described interactions with O2•-. The activity toward O2•- was A2-OH (1.26 × 106 M-1s-1) > A3-OH (7.71 × 105 M-1s-1) > A1-OH (4.22 × 105 M-1s-1). Molecular docking and dynamics studies tested inhibitory capability against enzymes producing reactive species: Lipoxygenase (LOX), Myeloperoxidase (MPO), NAD(P)H oxidase (NOX), and Xanthine Oxidase (XOD). Affinity to enzymes decreased in the order: XOD > LOX > NOX > MPO.
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Affiliation(s)
- Žiko Milanović
- Institute for Information Technologies, Department of Science, University of Kragujevac, Kragujevac, Serbia
| | - Svetlana Jeremić
- Department of Natural Science and Mathematics, State University of Novi Pazar, Novi Pazar, Serbia
| | - Marko Antonijević
- Institute for Information Technologies, Department of Science, University of Kragujevac, Kragujevac, Serbia
| | - Dušan Dimić
- Faculty of Physical Chemistry, University of Belgrade, Belgrade, Serbia
| | - Đura Nakarada
- Faculty of Physical Chemistry, University of Belgrade, Belgrade, Serbia
| | - Edina Avdović
- Institute for Information Technologies, Department of Science, University of Kragujevac, Kragujevac, Serbia
| | - Zoran Marković
- Institute for Information Technologies, Department of Science, University of Kragujevac, Kragujevac, Serbia
- Department of Natural Science and Mathematics, State University of Novi Pazar, Novi Pazar, Serbia
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Kaur M, Malik J, Naura AS. Guggulsterone protects against cigarette smoke-induced COPD linked lung inflammation. Cell Biochem Biophys 2024; 82:1145-1158. [PMID: 38609738 DOI: 10.1007/s12013-024-01265-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/29/2024] [Indexed: 04/14/2024]
Abstract
Recently, we have shown that guggulsterone is the principal constituent responsible for protective effects of Commiphora wightii against elastase-induced chronic obstructive pulmonary disease (COPD)-linked inflammation/emphysema. Given that cigarette smoke (CS) exposure is a primary risk factor for COPD and beneficial effects of guggulsterone have not been investigated in CS-induced COPD-linked lung inflammation. The present work was designed to validate the potential of guggulsterone in amelioration of COPD-linked lung inflammation by using a CS-based mouse model of the condition. Male BALB/c mice were exposed to 9 cigarettes/day with 1 h interval for 4 days daily. Guggulsterone was administered daily at a dose of 10 mg/kg orally for 4 consecutive days, 1 h before initiation of CS exposure. Mice were subjected to measurement of lung function followed by procurement of bronchoalveolar lavage fluid (BALF)/lung tissue. BALF was analyzed for inflammatory cells and pro-inflammatory cytokines. Lung tissue was subjected to RT-PCR for gene expression analysis. Data showed that CS exposure resulted in a significant increase in total BALF cells, predominantly neutrophils, and macrophages. Interestingly, guggulsterone administration significantly blunted CS-induced inflammation as reflected by reduced neutrophil and macrophage count. Further, the compound inhibited CS-induced gene expression of pro-inflammatory mediators TNF-α/ IL-1β/ G-CSF/and KC in lungs along with the production of pro-inflammatory mediators TNF-α/ IL-1β/ IL-6/ G-CSF/ KC/and MCP-1 in BALF. Further, guggulsterone improved the lung function parameters upon CS exposure. Analysis of mRNA expression of matrix metalloproteinase (MMP)-9 and tissue inhibitor of matrix metalloproteinase (TIMP)-1 suggests that guggulsterone may restore the fine balance between matrix-degrading proteases and its inhibitor in lung tissue upon CS exposure, which may contribute in the development of emphysema at later stages. Overall, our data show that guggulsterone protects against CS-induced COPD-linked lung inflammation by modulating relevant molecular players. Based on the potential effects of guggulsterone in the amelioration of CS-induced lung inflammation, we speculate that guggulsterone might alter chronic CS-induced emphysema.
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Affiliation(s)
- Manpreet Kaur
- Department of Biochemistry, Panjab University, Chandigarh, 160014, India
| | - Jai Malik
- University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, 160014, India
| | - Amarjit S Naura
- Department of Biochemistry, Panjab University, Chandigarh, 160014, India.
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Xu Z, Lei X, Chen C. Antioxidant diet/lifestyle could mitigate the adverse impacts of urinary polycyclic aromatic hydrocarbons on lung function. ENVIRONMENTAL RESEARCH 2024; 246:118099. [PMID: 38184067 DOI: 10.1016/j.envres.2024.118099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 12/15/2023] [Accepted: 01/02/2024] [Indexed: 01/08/2024]
Abstract
BACKGROUND Extant research has demonstrated a correlation between exposure to polycyclic aromatic hydrocarbons (PAHs) and impaired lung function. The maintenance of an antioxidant-rich diet/lifestyle positively benefits pulmonary health. However, the potential ameliorative impact of an antioxidant-based diet/lifestyle on PAH-induced detrimental effects remains unclear. METHODS The study drew upon cross-sectional data encompassing 1615 participants derived from the National Health and Nutrition Examination Survey 2007 to 2012. To gauge the maintenance of an antioxidant-rich diet/lifestyle, we employed Oxidative Balance Score (OBS) that incorporates sixteen nutrients and four lifestyle factors. Lung function was evaluated using percent-predicted Forced Vital Capacity (FVC), Forced Expiratory Volume 1st Second (FEV1), FEV1/FVC, and fractional exhaled nitric oxide (FENO). Our analytical approach entailed the utilization of weighted linear models. RESULTS Our analysis unveiled interaction effects between urinary monohydroxy polycyclic aromatic hydrocarbons (OH-PAHs) and OBS concerning lung function. A one-unit increase in ∑OH-PAH (sum of eight OH-PAHs) was linked to a -0.75% reduction (95% CI: -1.28, -0.22) in FEV1/FVC. Individuals exhibiting low OBS displayed a marked decrease in FEV1/FVC (mean difference = -1.10%; 95% CI: -1.82, -0.39) for each unit increase in ∑OH-PAH, whereas no significant associations were discerned for those with medium or high OBS. Further stratification by gender yielded consistent results. The correlation between ∑OH-PAH and FENO proved statistically significant among participants with low OBS (P = 0.002) and medium OBS (P = 0.001), but non-significant for those with high OBS. Parallel findings emerged when examining percent-predicted FEV1 and FVC. CONCLUSIONS In conclusion, our study underscores the existence of statistically significant interactions between OH-PAHs and the maintenance of an antioxidant-rich diet and lifestyle concerning lung function. These findings underscore the pivotal role of maintaining an antioxidant-based diet and lifestyle in mitigating the adverse impacts of PAH exposure on lung function.
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Affiliation(s)
- Zhixiao Xu
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xiong Lei
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Chengshui Chen
- Department of Pulmonary and Critical Care Medicine, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China; Key Laboratory of Interventional Pulmonology of Zhejiang Province, Wenzhou, China; Zhejiang Province Engineering Research Center for Endoscope Instruments and Technology Development, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People's Hospital, Quzhou, China.
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Pokharel MD, Garcia-Flores A, Marciano D, Franco MC, Fineman JR, Aggarwal S, Wang T, Black SM. Mitochondrial network dynamics in pulmonary disease: Bridging the gap between inflammation, oxidative stress, and bioenergetics. Redox Biol 2024; 70:103049. [PMID: 38295575 PMCID: PMC10844980 DOI: 10.1016/j.redox.2024.103049] [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: 12/08/2023] [Accepted: 01/16/2024] [Indexed: 02/02/2024] Open
Abstract
Once thought of in terms of bioenergetics, mitochondria are now widely accepted as both the orchestrator of cellular health and the gatekeeper of cell death. The pulmonary disease field has performed extensive efforts to explore the role of mitochondria in regulating inflammation, cellular metabolism, apoptosis, and oxidative stress. However, a critical component of these processes needs to be more studied: mitochondrial network dynamics. Mitochondria morphologically change in response to their environment to regulate these processes through fusion, fission, and mitophagy. This allows mitochondria to adapt their function to respond to cellular requirements, a critical component in maintaining cellular homeostasis. For that reason, mitochondrial network dynamics can be considered a bridge that brings multiple cellular processes together, revealing a potential pathway for therapeutic intervention. In this review, we discuss the critical modulators of mitochondrial dynamics and how they are affected in pulmonary diseases, including chronic obstructive pulmonary disease (COPD), idiopathic pulmonary fibrosis (IPF), acute lung injury (ALI), and pulmonary arterial hypertension (PAH). A dysregulated mitochondrial network plays a crucial role in lung disease pathobiology, and aberrant fission/fusion/mitophagy pathways are druggable processes that warrant further exploration. Thus, we also discuss the candidates for lung disease therapeutics that regulate mitochondrial network dynamics.
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Affiliation(s)
- Marissa D Pokharel
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Alejandro Garcia-Flores
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA
| | - David Marciano
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Maria C Franco
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Jeffrey R Fineman
- Department of Pediatrics, UC San Francisco, San Francisco, CA, 94143, USA
| | - Saurabh Aggarwal
- Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA
| | - Ting Wang
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA
| | - Stephen M Black
- Center for Translational Science, Florida International University, 11350 SW Village Parkway, Port St. Lucie, FL, 34987-2352, USA; Department of Molecular & Cellular Medicine, Herbert Wertheim College of Medicine, Florida International University, Miami, FL, 33199, USA; Department of Environmental Health Sciences, Robert Stempel College of Public Health and Social Work, Florida International University, Miami, FL, 33199, USA.
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Zhou L, Jian T, Wan Y, Huang R, Fang H, Wang Y, Liang C, Ding X, Chen J. Luteolin Alleviates Oxidative Stress in Chronic Obstructive Pulmonary Disease Induced by Cigarette Smoke via Modulation of the TRPV1 and CYP2A13/NRF2 Signaling Pathways. Int J Mol Sci 2023; 25:369. [PMID: 38203542 PMCID: PMC10779282 DOI: 10.3390/ijms25010369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 12/15/2023] [Accepted: 12/21/2023] [Indexed: 01/12/2024] Open
Abstract
The current study aims to investigate the therapeutic potential of luteolin (Lut), a naturally occurring flavonoid found in various medicinal plants, for treating chronic obstructive pulmonary disease (COPD) through both in vitro and in vivo studies. The results demonstrated that Lut increased body weight, reduced lung tissue swelling and lung damage indices, mitigated systemic oxidative stress levels, and decreased alveolar fusion in cigarette smoke (CS)- and lipopolysaccharide (LPS)-induced COPD mice. Additionally, Lut was observed to downregulate the expression of the TRPV1 and CYP2A13 proteins while upregulating SIRT6 and NRF2 protein expression in CS + LPS-induced COPD mice and cigarette smoke extract (CSE)-treated A549 cells. The concentrations of total reactive oxygen species (ROS) and mitochondrial ROS in A549 cells induced by CSE significantly increased. Moreover, CSE caused a notable elevation of intracellular Ca2+ levels in A549 cells. Importantly, Lut exhibited inhibitory effects on the inward flow of Ca2+ and attenuated the overproduction of mitochondrial and intracellular ROS in A549 cells treated with CSE. In conclusion, Lut demonstrated a protective role in alleviating oxidative stress and inflammation in CS + LPS-induced COPD mice and CSE-treated A549 cells by regulating TRPV1/SIRT6 and CYP2A13/NRF2 signaling pathways.
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Affiliation(s)
- Lina Zhou
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (L.Z.); (T.J.); (C.L.)
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
| | - Tunyu Jian
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (L.Z.); (T.J.); (C.L.)
| | - Yan Wan
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
| | - Rizhong Huang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
| | - Hailing Fang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
| | - Yiwei Wang
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
| | - Chengyuan Liang
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (L.Z.); (T.J.); (C.L.)
| | - Xiaoqin Ding
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (L.Z.); (T.J.); (C.L.)
| | - Jian Chen
- Jiangsu Key Laboratory for the Research and Utilization of Plant Resources, Institute of Botany, Jiangsu Province and Chinese Academy of Sciences, Nanjing 210014, China; (L.Z.); (T.J.); (C.L.)
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210023, China; (Y.W.); (R.H.); (H.F.); (Y.W.)
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Zhu N, Lin S, Yu H, Huang W, Cao C. Association of Dietary Flavonoid Intake with Serum Cotinine Levels in the General Adult Population. Nutrients 2023; 15:4126. [PMID: 37836410 PMCID: PMC10574452 DOI: 10.3390/nu15194126] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023] Open
Abstract
Cotinine, the primary metabolite of nicotine, can be utilized as a marker for active smoking and as an indicator of exposure to secondhand smoke. However, the direct relationship between dietary flavonoid intake and serum cotinine levels remains a subject of ongoing investigation. In this study, we utilized data from the National Health and Nutrition Examination Survey (NHANES) 2007-2010 and 2017-2018 to assess the association between dietary flavonoid intake and serum cotinine levels in adults through multiple linear regression analysis. A weighted quantile sum (WQS) regression model was used to assess the association of the mixture of six dietary flavonoids with serum cotinine levels in adults, which could represent the overall effect of the mixture of six dietary flavonoids. We also conducted stratified analyses by smoke status to explore multiple linear regression associations between different flavonoid intake and serum cotinine levels. A total of 14,962 adults were included in the study. Compared to the group with the lowest dietary flavonoid intake, total flavonoid intake in the second (β = -0.29 [-0.44, -0.14]), third (β = -0.41 [-0.58, -0.24]), and highest groups (β = -0.32 [-0.49, -0.16]) was inversely related to the levels of serum cotinine after adjusting the full model. An RCS model showed that when the total dietary flavonoid intake was less than 99.61 mg/day, there was a negative linear association between dietary flavonoid intake and the serum cotinine. The WQS regression model also showed that the intake of a mixture of six dietary flavonoids was significantly negatively correlated with serum cotinine levels (β = -0.54 [-0.61, -0.46], p <0.01), with anthocyanins having the greatest effect (weights = 32.30%). Our findings imply a significant correlation between dietary flavonoid intake and serum cotinine levels among adults. The consumption of a combination of six dietary flavonoids was consistently linked to lower serum cotinine levels, with anthocyanins displaying the most pronounced impact.
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Affiliation(s)
- Ning Zhu
- Key Laboratory of Respiratory Disease of Ningbo, Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China; (N.Z.); (W.H.)
| | - Shanhong Lin
- Department of Ultrasound, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China;
| | - Hang Yu
- Key Laboratory of Respiratory Disease of Ningbo, Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China; (N.Z.); (W.H.)
| | - Weina Huang
- Key Laboratory of Respiratory Disease of Ningbo, Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China; (N.Z.); (W.H.)
| | - Chao Cao
- Key Laboratory of Respiratory Disease of Ningbo, Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Ningbo University, Ningbo 315010, China; (N.Z.); (W.H.)
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Faujo Nintewoue GF, Tali Nguefak LD, Ngatcha G, Tagni SM, Talla P, Menzy Moungo‐Ndjole CM, Kouitcheu Mabeku LB. Helicobacter pylori infection-A risk factor for lipid peroxidation and superoxide dismutase over-activity: A cross-sectional study among patients with dyspepsia in Cameroon. JGH Open 2023; 7:618-628. [PMID: 37744703 PMCID: PMC10517442 DOI: 10.1002/jgh3.12958] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 07/23/2023] [Accepted: 08/12/2023] [Indexed: 09/26/2023]
Abstract
Background and Aim There is an intimate relationship between oxidative stress and inflammation. Helicobacter pylori (H. pylori) infection leads to gastritis in almost all the hosts. So, we hypothesize that gastritis in H. pylori infection may be described as the accumulation of continuous oxidative damage. Methods The study was conducted from October 2020 to October 2021 at three reference health facilities in Cameroon. A total of 266 participants (131 males and 135 females) ranging from 15 to 88 years old with 48.28 ± 17.29 years as mean age were enrolled. Each participant gave a written informed consent and ethical committees approved the protocol. Biopsies samples were collected for H. pylori detection using histological examination and rapid urease test. Malondialdehyde (MDA) and glutathione (GSH) content, and catalase (CAT) and superoxide dismutase (SOD) activities were evaluated in serum as biomarkers of oxidative stress. Results Helicobacter pylori was detected in 71.80% of our sample population. Low income level was associated with higher GSH level (P = 0.0249) and having family history of gastric cancer to higher SOD activity (P = 0.0156). A significant higher MDA content (P < 0.0001) and SOD activity (P = 0.0235) was recorded among infected individuals compared with noninfected ones. A significantly higher MDA content and SOD activity was recorded among smokers (P = 0.0461) and participants older than 50 years old (P = 0.0491) with H. pylori positivity. Conclusion Our findings showed that H. pylori infection is associated with overproduction of reactive oxygen species and oxidative stress. The presence of this pathogen in elderly individuals or in smokers increased their risk for oxidative stress.
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Affiliation(s)
| | - Lionel Danny Tali Nguefak
- Microbiology and Pharmacology Laboratory, Department of Biochemistry, Faculty of ScienceUniversity of DschangDschangCameroon
| | | | | | | | | | - Laure Brigitte Kouitcheu Mabeku
- Microbiology and Pharmacology Laboratory, Department of Biochemistry, Faculty of ScienceUniversity of DschangDschangCameroon
- Medical Microbiology Laboratory, Department of Microbiology, Faculty of ScienceUniversity of Yaoundé IYaoundéCameroon
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Biological and Genetic Mechanisms of COPD, Its Diagnosis, Treatment, and Relationship with Lung Cancer. Biomedicines 2023; 11:biomedicines11020448. [PMID: 36830984 PMCID: PMC9953173 DOI: 10.3390/biomedicines11020448] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/26/2023] [Accepted: 01/31/2023] [Indexed: 02/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is one of the most prevalent chronic adult diseases, with significant worldwide morbidity and mortality. Although long-term tobacco smoking is a critical risk factor for this global health problem, its molecular mechanisms remain unclear. Several phenomena are thought to be involved in the evolution of emphysema, including airway inflammation, proteinase/anti-proteinase imbalance, oxidative stress, and genetic/epigenetic modifications. Furthermore, COPD is one main risk for lung cancer (LC), the deadliest form of human tumor; formation and chronic inflammation accompanying COPD can be a potential driver of malignancy maturation (0.8-1.7% of COPD cases develop cancer/per year). Recently, the development of more research based on COPD and lung cancer molecular analysis has provided new light for understanding their pathogenesis, improving the diagnosis and treatments, and elucidating many connections between these diseases. Our review emphasizes the biological factors involved in COPD and lung cancer, the advances in their molecular mechanisms' research, and the state of the art of diagnosis and treatments. This work combines many biological and genetic elements into a single whole and strongly links COPD with lung tumor features.
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Ding K, Jiang W, Zhan W, Xiong C, Chen J, Wang Y, Jia H, Lei M. The therapeutic potential of quercetin for cigarette smoking-induced chronic obstructive pulmonary disease: a narrative review. Ther Adv Respir Dis 2023; 17:17534666231170800. [PMID: 37154390 PMCID: PMC10170608 DOI: 10.1177/17534666231170800] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/10/2023] Open
Abstract
Quercetin is a flavonoid with antioxidant and anti-inflammatory properties. Quercetin has potentially beneficial therapeutic effects for several diseases, including cigarette smoking-induced chronic obstructive pulmonary disease (CS-COPD). Many studies have shown that quercetin's antioxidant and anti-inflammatory properties have positive therapeutic potential for CS-COPD. In addition, quercetin's immunomodulatory, anti-cellular senescence, mitochondrial autophagy-modulating, and gut microbiota-modulating effects may also have therapeutic value for CS-COPD. However, there appears to be no review of the possible mechanisms of quercetin for treating CS-COPD. Moreover, the combination of quercetin with common therapeutic drugs for CS-COPD needs further refinement. Therefore, in this article, after introducing the definition and metabolism of quercetin, and its safety, we comprehensively presented the pathogenesis of CS-COPD related to oxidative stress, inflammation, immunity, cellular senescence, mitochondrial autophagy, and gut microbiota. We then reviewed quercetin's anti-CS-COPD effects, performed by influencing these mechanisms. Finally, we explored the possibility of using quercetin with commonly used drugs for treating CS-COPD, providing a basis for future screening of excellent drug combinations for treating CS-COPD. This review has provided meaningful information on quercetin's mechanisms and clinical use in treating CS-COPD.
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Affiliation(s)
- Kaixi Ding
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wei Jiang
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Wenling Zhan
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Chunping Xiong
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, China
| | - Jieling Chen
- Shehong Hospital of Traditional Chinese Medicine, Shehong, China
| | - Yu Wang
- Jiangsu Provincial Hospital of Traditional Chinese Medicine, Nanjing, China
| | - Huanan Jia
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
| | - Ming Lei
- Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu 610075, China
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Wang Q, Unwalla H, Rahman I. Dysregulation of mitochondrial complexes and dynamics by chronic cigarette smoke exposure Utilizing MitoQC reporter mice. Mitochondrion 2022; 63:43-50. [PMID: 35032706 PMCID: PMC8885972 DOI: 10.1016/j.mito.2022.01.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/06/2022] [Accepted: 01/10/2022] [Indexed: 02/04/2023]
Abstract
Cigarette smoke (CS) is known to cause impaired mitophagy and mitochondrial dysregulation in the pathogenesis of chronic obstructive pulmonary disease (COPD)/emphysema. Mitochondrial complexes and dynamics are affected by acute CS exposure in lung epithelium and mouse lung. We hypothesize that chronic CS exposure (4 months) will induce lung mitochondrial dysregulation and abnormal mitophagy. In this study, we employed the mitoQC reporter mice, a mitochondrial reporter strain, which can reflect the mitophagy based on the fluorescence-tagged mitochondria. Chronic CS exposure induced lung inflammatory cell infiltration, airspace enlargement, and lung cellular senescence. We showed the higher occurrence of mitophagy (GFP/mCherry) in the lung cells by CS exposure, associated with more mitochondrial fluorescence signals (GFP+/mCherry+). After chronic CS exposure, the mitochondrial complexes and function related genes were inhibited, while protein levels of complexes I and III slightly changed. Additionally, chronic CS exposure down-regulated most of the mitochondrial dynamic markers at gene expression level, included mitochondrial fusion/fission and mitochondrial translocate/transfer markers. For the markers related to mitophagy, Pink1 and Parkin, decreased gene and protein levels of Parkin, and decreased gene expression of Pink1, were identified in the CS exposure group. Hence, CS-induced mitophagy is mediated by Pink1-Parkin independent mechanism. Thus, we have shown that the chronic CS epxosure dysregulated mitochondrial complexes and dynamics and induced mitophagy, using the state-of-the art mitoQC reporter mouse model. Our results suggested that dysregulated mitochondrial function and dynamics are associated with CS-induced lung injury and phenotypic development of chronic lung diseases, such as COPD/ emphysema.
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Affiliation(s)
- Qixin Wang
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY, USA
| | - Hoshang Unwalla
- Department of Immunology and Nanomedicine, Herbert Wertheim College of medicine, Florida International University, Miami, FL, USA
| | - Irfan Rahman
- Department of Environmental Medicine, School of Medicine and Dentistry, University of Rochester Medical Center, Rochester, NY, USA.
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11
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Jain S, Durugkar S, Saha P, Gokhale SB, Naidu VGM, Sharma P. Effects of intranasal azithromycin on features of cigarette smoke-induced lung inflammation. Eur J Pharmacol 2022; 915:174467. [PMID: 34478690 DOI: 10.1016/j.ejphar.2021.174467] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/04/2021] [Accepted: 08/30/2021] [Indexed: 11/30/2022]
Abstract
Airflow limitation in chronic obstructive pulmonary disease (COPD) is the result of exaggerated airway fibrosis and obliteration of the small airways due to persistent inflammation, and an impaired anti-oxidant response. EMT has been implicated as an active signalling process in cigarette smoke (CS)-induced lung pathology, and macrolide Azithromycin (AZT) use has gained interest in treating COPD. Here, we tested effectiveness of intra-nasal AZT alone and in combination with dexamethasone (DEX) on CS-induced acute lung inflammation. Human alveolar epithelial cells (A549) were treated with CS extract (CSE) for 48 h, and male Balb/c mice were exposed to CS (3 cigarettes-3 times/day) for 4 days. The effects of AZT alone (0.25 and 1.25 μM, in vitro; 0.5 and 5 mg/kg, in vivo) or in combination with DEX (1 μM, in vitro; 1 mg/kg, in vivo) on CS-induced cellular cytotoxicity, oxidative stress, inflammation, and lung function were assessed. AZT alone and in combination with DEX significantly inhibited the CS (E)-induced expression of mesenchymal protein markers and the regulatory protein β-catenin. Furthermore, AZT by itself or in combination with DEX significantly suppressed CS-induced expression of the proinflammtory cytokines TNFα, IL1β and IL6 and prevented pNFkB. Mechanistically, AZT restored the CS-induced reduction in anti-oxidant transcription factor NRF2 and upregulated HDAC2 levels, thereby repressing inflammatory gene expression. Beneficial effects of AZT functionally translated in improved lung mechanics in vivo. Further preclinical and clinical studies are warranted to fully establish and validate the therapeutic efficacy of AZT as a mono- or combination therapy for the treatment of COPD.
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Affiliation(s)
- Siddhi Jain
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Guwahati, Assam, 781101, India
| | - Sneha Durugkar
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Guwahati, Assam, 781101, India
| | - Pritam Saha
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Guwahati, Assam, 781101, India
| | - Sharad B Gokhale
- Department of Civil Engineering, Indian Institute of Technology Guwahati, North Amingaon, Guwahati, Assam, 781039, India
| | - V G M Naidu
- Department of Pharmacology & Toxicology, National Institute of Pharmaceutical Education and Research Guwahati, Sila Village, Changsari, Guwahati, Assam, 781101, India.
| | - Pawan Sharma
- Center for Translational Medicine, Division of Pulmonary, Allergy and Critical Care Medicine, Jane & Leonard Korman Respiratory Institute, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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12
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Routhier J, Pons S, Freidja ML, Dalstein V, Cutrona J, Jonquet A, Lalun N, Mérol JC, Lathrop M, Stitzel JA, Kervoaze G, Pichavant M, Gosset P, Tournier JM, Birembaut P, Dormoy V, Maskos U. An innate contribution of human nicotinic receptor polymorphisms to COPD-like lesions. Nat Commun 2021; 12:6384. [PMID: 34737286 PMCID: PMC8568944 DOI: 10.1038/s41467-021-26637-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/14/2021] [Indexed: 02/07/2023] Open
Abstract
Chronic Obstructive Pulmonary Disease is a generally smoking-linked major cause of morbidity and mortality. Genome-wide Association Studies identified a locus including a non-synonymous single nucleotide polymorphism in CHRNA5, rs16969968, encoding the nicotinic acetylcholine receptor α5 subunit, predisposing to both smoking and Chronic Obstructive Pulmonary Disease. Here we report that nasal polyps from rs16969968 non-smoking carriers exhibit airway epithelium remodeling and inflammation. These hallmarks of Chronic Obstructive Pulmonary Disease occur spontaneously in mice expressing human rs16969968. They are significantly amplified after exposure to porcine pancreatic elastase, an emphysema model, and to oxidative stress with a polymorphism-dependent alteration of lung function. Targeted rs16969968 expression in epithelial cells leads to airway remodeling in vivo, increased proliferation and production of pro-inflammatory cytokines through decreased calcium entry and increased adenylyl-cyclase activity. We show that rs16969968 directly contributes to Chronic Obstructive Pulmonary Disease-like lesions, sensitizing the lung to the action of oxidative stress and injury, and represents a therapeutic target. Human polymorphisms in nicotinic acetylcholine receptor genes have been linked to both smoking and lung diseases like Chronic Obstructive Pulmonary Disease (COPD) or lung cancer. Here the authors identify a direct role for a human coding polymorphism in COPD-like lesions independent of smoke or nicotine exposure.
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Affiliation(s)
- Julie Routhier
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France
| | - Stéphanie Pons
- Institut Pasteur, Université de Paris, Integrative Neurobiology of Cholinergic Systems, CNRS UMR 3571, Paris, France
| | - Mohamed Lamine Freidja
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France.,Department of Biochemistry and Microbiology, Faculty of Sciences, University of M'sila, M'sila, Algeria
| | - Véronique Dalstein
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France.,Department of Biopathology, CHU of Reims, Reims, France
| | - Jérôme Cutrona
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France
| | - Antoine Jonquet
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France
| | - Nathalie Lalun
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France
| | - Jean-Claude Mérol
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France.,Department of Otorhinolaryngology, CHU of Reims, Reims, France
| | - Mark Lathrop
- McGill University Genome Center, Montréal, QC, Canada
| | - Jerry A Stitzel
- Institute for Behavioral Genetics, University of Colorado, Boulder, CO, USA
| | - Gwenola Kervoaze
- University of Lille, CNRS UMR9017, Inserm U1019, CHU Lille, Institut Pasteur de Lille, CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Muriel Pichavant
- University of Lille, CNRS UMR9017, Inserm U1019, CHU Lille, Institut Pasteur de Lille, CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Philippe Gosset
- University of Lille, CNRS UMR9017, Inserm U1019, CHU Lille, Institut Pasteur de Lille, CIIL - Center for Infection and Immunity of Lille, Lille, France
| | - Jean-Marie Tournier
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France
| | - Philippe Birembaut
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France.,Department of Biopathology, CHU of Reims, Reims, France
| | - Valérian Dormoy
- Université de Reims Champagne-Ardenne, Inserm, P3Cell UMR-S1250, Reims, France.
| | - Uwe Maskos
- Institut Pasteur, Université de Paris, Integrative Neurobiology of Cholinergic Systems, CNRS UMR 3571, Paris, France.
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13
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Gillenwater LA, Helmi S, Stene E, Pratte KA, Zhuang Y, Schuyler RP, Lange L, Castaldi PJ, Hersh CP, Banaei-Kashani F, Bowler RP, Kechris KJ. Multi-omics subtyping pipeline for chronic obstructive pulmonary disease. PLoS One 2021; 16:e0255337. [PMID: 34432807 PMCID: PMC8386883 DOI: 10.1371/journal.pone.0255337] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 07/14/2021] [Indexed: 11/25/2022] Open
Abstract
Chronic Obstructive Pulmonary Disease (COPD) is the third leading cause of mortality in the United States; however, COPD has heterogeneous clinical phenotypes. This is the first large scale attempt which uses transcriptomics, proteomics, and metabolomics (multi-omics) to determine whether there are molecularly defined clusters with distinct clinical phenotypes that may underlie the clinical heterogeneity. Subjects included 3,278 subjects from the COPDGene cohort with at least one of the following profiles: whole blood transcriptomes (2,650 subjects); plasma proteomes (1,013 subjects); and plasma metabolomes (1,136 subjects). 489 subjects had all three contemporaneous -omics profiles. Autoencoder embeddings were performed individually for each -omics dataset. Embeddings underwent subspace clustering using MineClus, either individually by -omics or combined, followed by recursive feature selection based on Support Vector Machines. Clusters were tested for associations with clinical variables. Optimal single -omics clustering typically resulted in two clusters. Although there was overlap for individual -omics cluster membership, each -omics cluster tended to be defined by unique molecular pathways. For example, prominent molecular features of the metabolome-based clustering included sphingomyelin, while key molecular features of the transcriptome-based clusters were related to immune and bacterial responses. We also found that when we integrated the -omics data at a later stage, we identified subtypes that varied based on age, severity of disease, in addition to diffusing capacity of the lungs for carbon monoxide, and precent on atrial fibrillation. In contrast, when we integrated the -omics data at an earlier stage by treating all data sets equally, there were no clinical differences between subtypes. Similar to clinical clustering, which has revealed multiple heterogenous clinical phenotypes, we show that transcriptomics, proteomics, and metabolomics tend to define clusters of COPD patients with different clinical characteristics. Thus, integrating these different -omics data sets affords additional insight into the molecular nature of COPD and its heterogeneity.
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Affiliation(s)
| | - Shahab Helmi
- Department of Computer Science and Engineering, College of Engineering, Design and Computing, University of Colorado Denver, Denver, CO, United States of America
| | - Evan Stene
- Department of Computer Science and Engineering, College of Engineering, Design and Computing, University of Colorado Denver, Denver, CO, United States of America
| | | | - Yonghua Zhuang
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - Ronald P. Schuyler
- Department of Immunology & Microbiology, University of Colorado, Anschutz Medical Campus, Aurora, CO, United States of America
| | - Leslie Lange
- Division of Biomedical Informatics and Personalized Medicine, Department of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
| | - Peter J. Castaldi
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Craig P. Hersh
- Channing Division of Network Medicine, Brigham and Women’s Hospital, Boston, MA, United States of America
| | - Farnoush Banaei-Kashani
- Department of Computer Science and Engineering, College of Engineering, Design and Computing, University of Colorado Denver, Denver, CO, United States of America
| | | | - Katerina J. Kechris
- Department of Biostatistics and Informatics, Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO, United States of America
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14
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Zahra KF, Lefter R, Ali A, Abdellah EC, Trus C, Ciobica A, Timofte D. The Involvement of the Oxidative Stress Status in Cancer Pathology: A Double View on the Role of the Antioxidants. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:9965916. [PMID: 34394838 PMCID: PMC8360750 DOI: 10.1155/2021/9965916] [Citation(s) in RCA: 49] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022]
Abstract
Oxygen-free radicals, reactive oxygen species (ROS) or reactive nitrogen species (RNS), are known by their "double-sided" nature in biological systems. The beneficial effects of ROS involve physiological roles as weapons in the arsenal of the immune system (destroying bacteria within phagocytic cells) and role in programmed cell death (apoptosis). On the other hand, the redox imbalance in favor of the prooxidants results in an overproduction of the ROS/RNS leading to oxidative stress. This imbalance can, therefore, be related to oncogenic stimulation. High levels of ROS disrupt cellular processes by nonspecifically attacking proteins, lipids, and DNA. It appears that DNA damage is the key player in cancer initiation and the formation of 8-OH-G, a potential biomarker for carcinogenesis. The harmful effect of ROS is neutralized by an antioxidant protection treatment as they convert ROS into less reactive species. However, contradictory epidemiological results show that supplementation above physiological doses recommended for antioxidants and taken over a long period can lead to harmful effects and even increase the risk of cancer. Thus, we are describing here some of the latest updates on the involvement of oxidative stress in cancer pathology and a double view on the role of the antioxidants in this context and how this could be relevant in the management and pathology of cancer.
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Affiliation(s)
- Kamal Fatima Zahra
- Faculty of Sciences and Techniques, Laboratory of Physical Chemistry of Processes and Materials/Agri-Food and Health, Hassan First University, B.P. 539, 26000 Settat, Morocco
| | - Radu Lefter
- Center of Biomedical Research, Romanian Academy, 8th Carol I Avenue, 700506 Iasi, Romania
| | - Ahmad Ali
- Department of Life Sciences, University of Mumbai, Vidyanagari, Santacruz (East), Mumbai 400098, India
| | - Ech-Chahad Abdellah
- Faculty of Sciences and Techniques, Laboratory of Physical Chemistry of Processes and Materials, Hassan First University, B.P. 539, 26000 Settat, Morocco
| | - Constantin Trus
- Department of Morphological and Functional Sciences, Faculty of Medicine, Dunarea de Jos University, 800008 Galati, Romania
| | - Alin Ciobica
- Department of Biology, Faculty of Biology, Alexandru Ioan Cuza University, 11th Carol I Avenue, 700506 Iasi, Romania
| | - Daniel Timofte
- Faculty of Medicine, “Grigore T. Popa”, University of Medicine and Pharmacy, Strada Universitatii 16, 700115 Iasi, Romania
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15
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Liu J, Chen X, Qiu X, Zhang H, Lu X, Li H, Chen W, Zhang L, Que C, Zhu T. Association between exposure to polycyclic aromatic hydrocarbons and lipid peroxidation in patients with chronic obstructive pulmonary disease. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 780:146660. [PMID: 34030292 DOI: 10.1016/j.scitotenv.2021.146660] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/14/2021] [Accepted: 03/17/2021] [Indexed: 06/12/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are toxic airborne pollutants and may cause adverse effects at high level of oxidative stress. Here we hypothesized that individuals with impaired lung function are susceptible to PAHs associated oxidative damage. Hence, we carried out a panel study and conducted four follow-up visits on 40 chronic obstructive pulmonary disease (COPD) patients and 75 healthy controls. Hydroxylated PAHs (OH-PAHs) and malonaldehyde (MDA) were measured in urine as exposure and oxidative stress markers, respectively, which showed significant association in all participants. Quantitatively, a 1-fold increase in OH-PAHs was associated with a 4.1-15.1% elevation of MDA. The association between OH-PAHs and MDA levels became stronger in participants with impaired lung function. For 1% decrease of FEV1/FVC, the increase of MDA associated with a 1-fold increase in OH-PAHs was up to 0.49%, suggesting an increased susceptibility to PAH-induced oxidative damage in individuals with worse lung function. This study observed that impaired lung function modified the association between PAH exposure and oxidative damage, which might accelerate the aggravation of COPD, and therefore highlighted the necessity of protection measures to decrease the additional adverse effects of air pollution exposure. CAPSULE: Individuals with worse lung function may be more susceptible to PAH-induced lipid peroxidation.
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Affiliation(s)
- Jinming Liu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Xi Chen
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Xinghua Qiu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China.
| | - Hanxiyue Zhang
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Xinchen Lu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Haonan Li
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Wu Chen
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
| | - Lina Zhang
- Shichahai Community Health Center, Xicheng District, Beijing 100035, PR China
| | - Chengli Que
- Peking University First Hospital, Peking University, Beijing 100034, PR China
| | - Tong Zhu
- State Key Joint Laboratory for Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Center for Environment and Health, Peking University, Beijing 100871, PR China
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16
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Huang Z, Wei P, Gan L, Li W, Zeng T, Qin C, Chen Z, Liu G. Expression of histone deacetylase 2 in tracheal stenosis models and its relationship with tracheal granulation tissue proliferation. Exp Ther Med 2021; 21:444. [PMID: 33747180 PMCID: PMC7967890 DOI: 10.3892/etm.2021.9872] [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: 10/13/2019] [Accepted: 04/24/2020] [Indexed: 11/07/2022] Open
Abstract
The current treatments for benign tracheal stenosis are inefficient. The present study examined the expression of histone deacetylase 2 (HDAC2) in different tracheal stenosis models and explored its association with the proliferation of tracheal granulation tissue and its ability to constitute a potential therapy for tracheal stenosis. Animal tracheal stenosis models were established, as indicated by hematoxylin and eosin (H&E) staining. A total of 24 New Zealand White rabbits were randomly divided into control, erythromycin, budesonide and vorinostat groups. Stenotic tracheal tissues were collected on day 11 after drug administration for 10 days. The degree of tracheal stenosis in each group was calculated, and pathological alterations were observed using H&E staining. The mRNA expression of HDAC2, interleukin-8 (IL-8), transforming growth factor-β1 (TGF-β1) and vascular endothelial growth factor (VEGF) was examined via reverse transcription-quantitative PCR. The protein expression of HDAC2 was examined via immunofluorescence, while the expression of type I and type III collagen was assessed using immunohistochemistry. The results of the present study demonstrated that tracheal epithelial hyperplasia in the erythromycin group was improved, the degree of hyperplasia being the lowest among all groups, and tracheal stenosis was reduced compared with the control group. In the vorinostat group, tracheal epithelial tissue hyperplasia was aggravated and stenosis was increased. The HDAC2 mRNA and protein levels were increased and decreased in the erythromycin and vorinostat groups, respectively. In contrast, the IL-8 mRNA expression levels were decreased and increased in the erythromycin and vorinostat groups, respectively. TGF-β1, VEGF, type I and type III collagen expression was decreased in the erythromycin group, while TGF-β1, VEGF and type III collagen expression was increased in the vorinostat group. Compared with the control, the budesonide group did not exhibit any alterations in all of the indicators examined, including TGF-β1, VEGF, IL-8, HDAC2 and collagen. Erythromycin treatment upregulated the expression of HDAC2, inhibited the inflammatory responses and reduced the proliferation of tracheal granulation tissue. In contrast, vorinostat treatment downregulated HDAC2 expression, promoted the inflammatory responses and increased the proliferation of tracheal granulation tissue. These results suggest that regulating HDAC2 may be used as a potential treatment for benign tracheal stenosis.
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Affiliation(s)
- Zhenjie Huang
- Department of Respiratory Medicine, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530007, P.R. China
| | - Peng Wei
- Department of Respiratory Medicine, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530007, P.R. China
| | - Luoman Gan
- School of Medicine, Qinghai University, Xining, Qinghai 810000, P.R. China
| | - Wentao Li
- Department of Respiratory Medicine, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530007, P.R. China
| | - Tonghua Zeng
- Department of Respiratory Medicine, Beihai People's Hospital, Beihai, Guangxi 536000, P.R. China
| | - Caicheng Qin
- Department of Respiratory Medicine, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530007, P.R. China
| | - Zhiyu Chen
- Department of Respiratory Medicine, Beihai People's Hospital, Beihai, Guangxi 536000, P.R. China
| | - Guangnan Liu
- Department of Respiratory Medicine, Second Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi 530007, P.R. China
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17
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García-Valero J, Olloquequi J, Rodríguez E, Martín-Satué M, Texidó L, Ferrer J. Decreased Expression of EC-SOD and Fibulin-5 in Alveolar Walls of Lungs From COPD Patients. Arch Bronconeumol 2021; 58:S0300-2896(21)00016-8. [PMID: 33640211 DOI: 10.1016/j.arbres.2020.12.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/18/2020] [Accepted: 12/22/2020] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The aim of this study is to analyze the expression of the main oxidant scavenger superoxide dismutase (EC-SOD), its main binding protein Fibulin-5 and several oxidative and nitrosative-derived products in the lung of COPD patients and controls. MATERIALS AND METHODS Lung tissue samples from 19 COPD patients and 20 control subjects were analyzed. The architecture of elastic fibres was assessed by light and electron microscope histochemical techniques, and levels of EC-SOD and fibulin-5 were analyzed by immunohistochemistry and RT-PCR. The impact of oxidative stress on the extracellular matrix was estimated by immunolocalization of 4-hydroxynonenal (4-HNE), malondialdehyde (MDA) and 3-nitrotyrosine (3-NYT) adducts. RESULTS Alveolar walls of COPD patients exhibited abnormal accumulations of collapsing elastic fibres, showing a pierced pattern in the amorphous component. The semiquantitative analysis revealed that COPD patients have a significantly reduced expression of both EC-SOD and fibulin-5 (0.59±0.64 and 0.62±0.61, respectively) in alveolar, bronchiolar and arteriolar walls compared to control subjects (1.39±0.63 and 1.55±0.52, respectively, p<0.05). No significant changes in mRNA levels of these proteins were observed between groups. Among the oxidation markers, malondialdehyde was the best in distinguishing COPD patients. CONCLUSIONS COPD patients show a reduced expression of EC-SOD and fibulin-5 in the lung interstitium. Paralleling the reduction of EC-SOD levels, the decrease of fibulin-5 expression in COPD lungs supports the hypothesis of an impaired pulmonary antioxidant response in COPD patients.
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Affiliation(s)
- José García-Valero
- Department of Cell Biology, Physiology and Immunology, Faculty of Biology, University of Barcelona, Barcelona, Spain
| | - Jordi Olloquequi
- Laboratory of Cellular and Molecular Pathology, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Talca, Chile
| | - Esther Rodríguez
- Department of Pneumology, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona and CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain
| | - Mireia Martín-Satué
- Department of Pathology and Experimental Therapeutics, Faculty of Medicine, University of Barcelona, Barcelona, Spain; Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), Barcelona, Spain
| | - Laura Texidó
- Department of Pathology and Experimental Therapeutics, Faculty of Medicine, University of Barcelona, Barcelona, Spain
| | - Jaume Ferrer
- Department of Pneumology, Vall d'Hebron University Hospital, Universitat Autònoma de Barcelona and CIBER de Enfermedades Respiratorias (CIBERES), Barcelona, Spain.
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18
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Knoblauch R, Harvey A, Ra E, Greenberg KM, Lau J, Hawkins E, Geddes CD. Antimicrobial carbon nanodots: photodynamic inactivation and dark antimicrobial effects on bacteria by brominated carbon nanodots. NANOSCALE 2021; 13:85-99. [PMID: 33211048 PMCID: PMC7796955 DOI: 10.1039/d0nr06842j] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
The evolving threat of antibiotic resistance development in pathogenic bacteria necessitates the continued cultivation of new technologies and agents to mitigate associated negative health impacts globally. It is no surprise that infection prevention and control are cited by the Centers for Disease Control and Prevention (CDC) as two routes for combating this dangerous trend. One technology that has gained great research interest is antimicrobial photodynamic inactivation of bacteria, or APDI. This technique permits controllable activation of antimicrobial effects by combining specific light excitation with the photodynamic properties of a photosensitizer; when activated, the photosensitizer generates reactive oxygen species (ROS) from molecular oxygen via either a type I (electron transfer) or type II (energy transfer) pathway. These species subsequently inflict oxidative damage on nearby bacteria, resulting in suppressed growth and cell death. To date, small molecule photosensitizers have been developed, yet the scalability of these as widespread sterilization agents is limited due to complex and costly synthetic procedures. Herein we report the use of brominated carbon nanodots (BrCND) as new photosensitizers for APDI. These combustion byproducts are easily and inexpensively collected; incorporation of bromine into the nanodot permits photosensitization effects that are not inherent to the carbon nanodot structure alone-a consequence of triplet character gained by the heavy atom effect. BrCND demonstrate both type I and type II photosensitization under UV-A irradiation, and furthermore are shown to have significant antimicrobial effects against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus and Listeria monocytogenes as well. A mechanism of "dark" toxicity is additionally reported; the pH-triggered release of reactive nitrogen species is detected from a carbon nanodot structure for the first time. The results described present the BrCND structure as a competitive new antimicrobial agent for controllable sterilization of bacteria.
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Affiliation(s)
- Rachael Knoblauch
- Institute of Fluorescence and Department of Chemistry and Biochemistry, University of Maryland Baltimore County, 701 East Pratt Street, Baltimore, Maryland 21202, USA.
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19
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Mastej E, Gillenwater L, Zhuang Y, Pratte KA, Bowler RP, Kechris K. Identifying Protein-metabolite Networks Associated with COPD Phenotypes. Metabolites 2020; 10:metabo10040124. [PMID: 32218378 PMCID: PMC7241079 DOI: 10.3390/metabo10040124] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/06/2020] [Accepted: 03/23/2020] [Indexed: 02/02/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a disease in which airflow obstruction in the lung makes it difficult for patients to breathe. Although COPD occurs predominantly in smokers, there are still deficits in our understanding of the additional risk factors in smokers. To gain a deeper understanding of the COPD molecular signatures, we used Sparse Multiple Canonical Correlation Network (SmCCNet), a recently developed tool that uses sparse multiple canonical correlation analysis, to integrate proteomic and metabolomic data from the blood of 1008 participants of the COPDGene study to identify novel protein-metabolite networks associated with lung function and emphysema. Our aim was to integrate -omic data through SmCCNet to build interpretable networks that could assist in the discovery of novel biomarkers that may have been overlooked in alternative biomarker discovery methods. We found a protein-metabolite network consisting of 13 proteins and 7 metabolites which had a -0.34 correlation (p-value = 2.5 × 10-28) to lung function. We also found a network of 13 proteins and 10 metabolites that had a -0.27 correlation (p-value = 2.6 × 10-17) to percent emphysema. Protein-metabolite networks can provide additional information on the progression of COPD that complements single biomarker or single -omic analyses.
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Affiliation(s)
- Emily Mastej
- Computational Bioscience Program, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Correspondence:
| | | | - Yonghua Zhuang
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | | | - Russell P. Bowler
- National Jewish Health, Denver, CO 80206, USA (K.A.P.)
- School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Katerina Kechris
- Colorado School of Public Health, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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20
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Impact of Sea Breeze Dynamics on Atmospheric Pollutants and Their Toxicity in Industrial and Urban Coastal Environments. REMOTE SENSING 2020. [DOI: 10.3390/rs12040648] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Sea breeze (SB) phenomena may strongly influence air quality and lead to important effects on human health. In order to study the impact of SB dynamics on the properties and toxicity of aerosols, an atmospheric mobile unit was deployed during a field campaign performed in an urbanized and industrialized coastal area in Northern France. This unit combines aerosol samplers, two scanning lidars (Doppler and elastic) and an air-liquid interface (ALI, Vitrocell®) in vitro cell exposure device. Our study highlights that after the passage of an SB front, the top of the atmospheric boundary layer collapses as the thermal internal boundary layer (TIBL) develops, which leads to high aerosol extinction coefficient values (>0.4 km−1) and an increase of PM2.5 and NOx concentrations in the SB current. The number-size distribution of particles indicates a high proportion of fine particles (with diameter below 500 nm), while the volume-size distribution shows a major mode of coarse particles centered on 2–3 µm. Individual particle analyses performed by cryo-transmission scanning electron microscopy (cryo-TSEM)-EDX highlights that submicronic particles contained a high fraction of secondary compounds, which may result from nucleation and/or condensation of condensable species (vapors or gaseous species after photo-oxidation). Secondary aerosol (SA) formation can be enhanced in some areas, by the interaction between the SB flow and the upper continental air mass, particularly due to the effect of both turbulence and temperature/humidity gradients between these two contrasting air masses. Potential areas of SA formation are located near the ground, during the SB front passage and in the vicinity of the SB current top. During the sea breeze event, an increase in the oxidative stress and inflammation processes in exposed lung cells, compared to the unexposed cells, can also be seen. In some instances, short singularity periods are observed during SB, corresponding to a double flow structure. It consists of two adjacent SB currents that induce an important increase of the TIBL top, improving the pollutants dispersion. This is associated with a substantial decrease of aerosol mass concentrations.
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21
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Stratev V, Dimitrova V, Petkova D. COPD and Comorbidities: Relating Mechanisms and Treatment. CURRENT RESPIRATORY MEDICINE REVIEWS 2019. [DOI: 10.2174/1573398x14666181018101021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Despite being a disease with the constantly rising social burden and mortality, COPD is
also associated with a number of other conditions known as comorbidities. COPD and other diseases
often share similar risk factors, such as smoking and aging, which leads to increased prevalence of
comorbidities. The key pathogenic mechanisms of COPD are chronic inflammation and oxidative
stress and they also contribute significantly to the development of accompanying diseases. Through
complex interactions, COPD increases the risk for certain comorbidities and they, in turn, have a
negative impact on health status and contribute to mortality in COPD patients. Proper treatment of
comorbidities may have a beneficial effect on COPD natural course and progression. Here we review
the prevalence of the most common comorbidities of COPD; their interrelating mechanism and the
current advances of the treatment in terms of co-existence.
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Affiliation(s)
- Velin Stratev
- Clinic of Pulmonary Diseases, University Hospital “St. Marina”, Varna, Bulgaria
| | - Valentina Dimitrova
- Clinic of Pulmonary Diseases, University Hospital “St. Marina”, Varna, Bulgaria
| | - Diana Petkova
- Clinic of Pulmonary Diseases, University Hospital “St. Marina”, Varna, Bulgaria
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22
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Babanov SA, Strizhakov LA, Lebedeva MV, Fomin VV, Budash DS, Baikova AG. Pneumoconiosises: modern view. TERAPEVT ARKH 2019; 91:107-113. [PMID: 31094468 DOI: 10.26442/00403660.2019.03.000066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The article is devoted to the actual problem - dust diseases of the lungs. The peculiarities of occurrence and course of pulmonary lesions that have a significant place in the overall structure of occupational morbidity are considered. Modern approaches to treatment, diagnostics and prevention issues in pneumoconiosis are discussed.
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Affiliation(s)
- S A Babanov
- Samara Federal State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia
| | - L A Strizhakov
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - M V Lebedeva
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - V V Fomin
- I.M. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation (Sechenov University), Moscow, Russia
| | - D S Budash
- Samara Federal State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia
| | - A G Baikova
- Samara Federal State Medical University of the Ministry of Health of the Russian Federation, Samara, Russia
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23
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Arimilli S, Schmidt E, Damratoski BE, Prasad GL. Role of Oxidative Stress in the Suppression of Immune Responses in Peripheral Blood Mononuclear Cells Exposed to Combustible Tobacco Product Preparation. Inflammation 2018; 40:1622-1630. [PMID: 28577134 PMCID: PMC5587635 DOI: 10.1007/s10753-017-0602-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Cigarette smoking is a major risk factor for several human diseases. Chronic inflammation, resulting from increased oxidative stress, has been suggested as a mechanism that contributes to the increased susceptibility of smokers to cancer and microbial infections. We have previously shown that whole-smoke conditioned medium (WS-CM) and total particulate matter (TPM) prepared from Kentucky 3R4F reference cigarettes [collectively called as combustible tobacco product preparations (TPPs)] potently suppressed agonist-stimulated cytokine secretion and target cell killing in peripheral blood mononuclear cells (PBMCs). Here we have investigated the role of oxidative stress from TPPs, which alters inflammatory responses in vitro. Particularly, we investigated the mechanisms of WS-CM-induced suppression of select cytokine secretions in Toll-like receptor (TLR) agonist-stimulated cells and target cell killing by effector cells in PBMCs. Pretreatment with N-acetyl cysteine (NAC), a precursor of reduced glutathione and an established anti-oxidant, protected against DNA damage and cytotoxicity caused by exposure to WS-CM. Similarly, secretion of tumor necrosis factor (TNF), interleukin (IL)-6, and IL-8 in response to TLR-4 stimulation was restored by pretreatment with NAC. Target cell killing, a functional measure of cytolytic cells in PBMCs, is suppressed by WS-CM. Pretreatment with NAC restored the target cell killing in WS-CM treated PBMCs. This was accompanied by higher perforin levels in the effector cell populations. Collectively, these data suggest that reducing oxidative stress caused by cigarette smoke components restores select immune responses in this ex vivo model.
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Affiliation(s)
- Subhashini Arimilli
- Department of Microbiology & Immunology, Wake Forest University Health Sciences, Room 2N-052, 575 Patterson Avenue, Winston-Salem, NC, 27101, USA.
| | | | - Brad E Damratoski
- Department of Regenerative Medicine, Wake Forest University Health Sciences, Winston-Salem, NC, USA
| | - G L Prasad
- RAI Services Company, Winston-Salem, NC, USA
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24
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Matin S, Nemati A, Ghobadi H, Alipanah-Moghadam R, Rezagholizadeh L. The effect of conjugated linoleic acid on oxidative stress and matrix metalloproteinases 2 and 9 in patients with COPD. Int J Chron Obstruct Pulmon Dis 2018; 13:1449-1454. [PMID: 29765212 PMCID: PMC5939916 DOI: 10.2147/copd.s155985] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Background Natural antioxidants in foods may be used in prevention and treatment of oxidative stress and inflammation in COPD. Therefore, this study aimed to evaluate the effect of conjugated linoleic acid (CLA) supplement as natural antioxidants on oxidative stress levels, and MMP2 and MMP9 serum levels in COPD patients. Materials and methods This clinical trial study was conducted on 90 (supplement group=45 and control group=45) COPD patients in Ardabil city, Iran, in 2015. After obtaining written consent, general information was collected from each patient using a validated and reliable questionnaire. Supplement group received 3.2 g of CLA and those in the control group were given 3.2 g of placebo for 6 weeks on a daily basis. Fasting blood samples were taken from all of the patients for testing of malondialdehyde (MDA), MMP2, and MMP9 levels at the beginning and end of the study. Data were analyzed using Kolmogorov–Smirnov test, independent samples t-test, paired sample t-test, chi-square test, and ANOVA. Results There were no significant differences between the two groups with regard to mean age, smoking status, and serum level of MDA at the beginning of the study. In the supplement group, the serum level of MDA decreased significantly at the end of the 6th week compared to that in the beginning of the study (p=0.0004), while in the placebo group, the difference was found to be insignificant. The serum level of MMP9 decreased significantly in the supplement group, while in the placebo group its level increased significantly as compared to that at the beginning of the study (p<0.05). The serum levels of MMP2 indicated no significant differences between the two groups neither at the beginning nor at the end of the study. Conclusion These findings indicated that CLA supplementation may be helpful for COPD patients through inhibiting the production of oxidative stress and controlling MMP9 serum levels.
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Affiliation(s)
- Somaieh Matin
- Department of Internal Medicine, Emam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Ali Nemati
- Biochemistry and Nutrition Department, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Hassan Ghobadi
- Department of Internal Medicine (Pulmonary Division), Emam Khomeini Hospital, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Reza Alipanah-Moghadam
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
| | - Lotfollah Rezagholizadeh
- Department of Biochemistry, School of Medicine, Ardabil University of Medical Sciences, Ardabil, Iran
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25
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Malinska D, Szymański J, Patalas-Krawczyk P, Michalska B, Wojtala A, Prill M, Partyka M, Drabik K, Walczak J, Sewer A, Johne S, Luettich K, Peitsch MC, Hoeng J, Duszyński J, Szczepanowska J, van der Toorn M, Wieckowski MR. Assessment of mitochondrial function following short- and long-term exposure of human bronchial epithelial cells to total particulate matter from a candidate modified-risk tobacco product and reference cigarettes. Food Chem Toxicol 2018; 115:1-12. [PMID: 29448087 DOI: 10.1016/j.fct.2018.02.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 02/07/2018] [Indexed: 12/25/2022]
Abstract
Mitochondrial dysfunction caused by cigarette smoke is involved in the oxidative stress-induced pathology of airway diseases. Reducing the levels of harmful and potentially harmful constituents by heating rather than combusting tobacco may reduce mitochondrial changes that contribute to oxidative stress and cell damage. We evaluated mitochondrial function and oxidative stress in human bronchial epithelial cells (BEAS 2B) following 1- and 12-week exposures to total particulate matter (TPM) from the aerosol of a candidate modified-risk tobacco product, the Tobacco Heating System 2.2 (THS2.2), in comparison with TPM from the 3R4F reference cigarette. After 1-week exposure, 3R4F TPM had a strong inhibitory effect on mitochondrial basal and maximal oxygen consumption rates compared to TPM from THS2.2. Alterations in oxidative phosphorylation were accompanied by increased mitochondrial superoxide levels and increased levels of oxidatively damaged proteins in cells exposed to 7.5 μg/mL of 3R4F TPM or 150 μg/mL of THS2.2 TPM, while cytosolic levels of reactive oxygen species were not affected. In contrast, the 12-week exposure indicated adaptation of BEAS-2B cells to long-term stress. Together, the findings indicate that 3R4F TPM had a stronger effect on oxidative phosphorylation, gene expression and proteins involved in oxidative stress than TPM from the candidate modified-risk tobacco product THS2.2.
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Affiliation(s)
- Dominika Malinska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Jędrzej Szymański
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Paulina Patalas-Krawczyk
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Bernadeta Michalska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Aleksandra Wojtala
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Monika Prill
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Małgorzata Partyka
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Karolina Drabik
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Jarosław Walczak
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Alain Sewer
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Stephanie Johne
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Karsta Luettich
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Manuel C Peitsch
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Julia Hoeng
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Jerzy Duszyński
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Joanna Szczepanowska
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland
| | - Marco van der Toorn
- PMI R&D, Philip Morris Products S.A., Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland.
| | - Mariusz R Wieckowski
- Nencki Institute of Experimental Biology, Polish Academy of Sciences, 3 Pasteur Street, 02-093 Warsaw, Poland.
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26
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p66Shc Mediates Mitochondrial Dysfunction Dependent on PKC Activation in Airway Epithelial Cells Induced by Cigarette Smoke. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2018; 2018:5837123. [PMID: 29849902 PMCID: PMC5925171 DOI: 10.1155/2018/5837123] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Revised: 02/08/2018] [Accepted: 02/28/2018] [Indexed: 12/02/2022]
Abstract
Airway epithelial mitochondrial injury plays a critical role in the pathogenesis of chronic obstructive pulmonary disease (COPD). The p66Shc adaptor protein is a newly recognized mediator of mitochondrial dysfunction. However, little is known about the effect of p66Shc on airway epithelial damage in the development of COPD. The aim of the present study is to investigate the roles of p66Shc and its upstream regulators in the mitochondrial injury of airway epithelial cells (Beas-2b) induced by cigarette smoke extract (CSE). Our present study revealed that CSE increased p66Shc expression and its mitochondrial translocation in concentration and time-dependent manners in airway epithelial cells. And p66Shc siRNA significantly attenuated mitochondrial dysfunction and cell injury when airway epithelial cells were stimulated with 7.5% CSE. The total and phosphorylated expression of PKCβ and PKCδ was significantly increased associated with mitochondrial dysfunction and cell injury when airway epithelial cells were exposed to 7.5% CSE. The pretreatments with pharmacological inhibitors of PKCβ and PKCδ could notably suppress p66Shc phosphorylation and its mitochondrial translocation and protect the mitochondria and cells against oxidative damage when airway epithelial cells were incubated with 7.5% CSE. These data suggest that a novel PKCβ/δ-p66Shc signaling pathway may be involved in the pathogenesis of COPD and other oxidative stress-associated pulmonary diseases and provide a potential therapeutic target for these diseases.
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27
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Lin TJ, Karmaus WJJ, Chen ML, Hsu JC, Wang IJ. Interactions Between Bisphenol A Exposure and GSTP1 Polymorphisms in Childhood Asthma. ALLERGY, ASTHMA & IMMUNOLOGY RESEARCH 2018; 10:172-179. [PMID: 29411558 PMCID: PMC5809766 DOI: 10.4168/aair.2018.10.2.172] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Revised: 12/20/2017] [Accepted: 12/31/2017] [Indexed: 12/25/2022]
Abstract
Purpose Bisphenol A (BPA) exposure may increase the risk of asthma. Genetic polymorphisms of oxidative stress-related genes, glutathione S-transferases (GSTM1, GSTP1), manganese superoxide dismutase, catalase, myeloperoxidase, and microsomal epoxide hydrolase may be related to BPA exposure. The aim is to evaluate whether oxidative stress genes modulates associations of BPA exposure with asthma. Methods We conducted a case-control study comprised of 126 asthmatic children and 327 controls. Urine Bisphenol A glucuronide (BPAG) levels were measured by ultra-performance liquid chromatography/tandem mass spectrometry, and genetic variants were analyzed by a TaqMan assay. Information on asthma and environmental exposure was collected. Analyses of variance and logistic regressions were performed to determine the association of genotypes and urine BPAG levels with asthma. Results BPAG levels were significantly associated with asthma (adjusted odds ratio [aOR], 1.29 per log unit increase in concentration; 95% confidence interval [CI], 1.081.55). Compared to the GG genotype, children with a GSTP1 AA genotype had higher urine BPAG concentrations (geometric mean [standard error], 12.72 [4.16] vs 11.42 [2.82]; P=0.036). In children with high BPAG, the GSTP1 AA genotype was related to a higher odds of asthma than the GG genotype (aOR, 4.84; 95% CI, 1.0223.06). Conclusions GSTP1 variants are associated with urine BPA metabolite levels. Oxidative stress genes may modulate the effect of BPA exposure on asthma.
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Affiliation(s)
- Tien Jen Lin
- Department of Neurosurgery, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Sports Science, College of Exercise and Health Sciences, National Taiwan Sport University, Taoyuan City, Taiwan.,Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei, Taiwan
| | - Wilfried J J Karmaus
- Division of Epidemiology, Biostatistics, and Environmental Health, School of Public Health, University of Memphis, Memphis, TN, USA
| | - Mei Lien Chen
- Institute of Environmental and Occupational Health Sciences, National Yang Ming University, Taipei, Taiwan
| | - Jiin Chyr Hsu
- Department of Internal Medicine, Taipei Hospital, Ministry of Health and Welfare, Taipei, Taiwan
| | - I Jen Wang
- Department of Pediatrics, Taipei Hospital, Ministry of Health and Welfare, Taipei, Taiwan.,School of Medicine, National Yang Ming University, Taipei, Taiwan.,College of Public Health, China Medical University, Taichung, Taiwan.
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28
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Farsalinos K. Electronic cigarettes: an aid in smoking cessation, or a new health hazard? Ther Adv Respir Dis 2018; 12:1753465817744960. [PMID: 29214890 PMCID: PMC5937152 DOI: 10.1177/1753465817744960] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/07/2017] [Indexed: 12/12/2022] Open
Abstract
The issue of electronic cigarettes is one of the most controversial topics in public health. There is intense debate and dividing opinions about their use patterns, health effects and association with smoking. This is expected since they were only recently introduced to the market and they refer to a harm-reduction approach and strategy that is not universally accepted for smoking and tobacco use in the public health community. Three main factors determine the public health impact of electronic cigarettes: (1) their safety/risk profile, both relative to smoking and in absolute terms; (2) their effectiveness for smoking reduction and cessation; (3) the patterns of use by different population subgroups, especially never-smokers, and adoption of use by youth. This analysis presents a brief overview of currently available evidence and gaps in research covering these three factors.
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Affiliation(s)
- Konstantinos Farsalinos
- Department of Cardiology, Onassis Cardiac
Surgery Center, Sygrou 356, Kallithea 17674, Greece Department of Pharmacy,
University of Patras, Rio-Patras 26500, Greece National School of Public
Health, Athens, Greece
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29
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Jeong JH, Kim J, Kim J, Heo HR, Jeong JS, Ryu YJ, Hong Y, Han SS, Hong SH, Lee SJ, Kim WJ. ACN9 Regulates the Inflammatory Responses in Human Bronchial Epithelial Cells. Tuberc Respir Dis (Seoul) 2017; 80:247-254. [PMID: 28747957 PMCID: PMC5526951 DOI: 10.4046/trd.2017.80.3.247] [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: 01/14/2017] [Revised: 05/02/2017] [Accepted: 05/04/2017] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Airway epithelial cells are the first line of defense, against pathogens and environmental pollutants, in the lungs. Cellular stress by cadmium (Cd), resulting in airway inflammation, is assumed to be directly involved in tissue injury, linked to the development of lung cancer, and chronic obstructive pulmonary disease (COPD). We had earlier shown that ACN9 (chromosome 7q21), is a potential candidate gene for COPD, and identified significant interaction with smoking, based on genetic studies. However, the role of ACN9 in the inflammatory response, in the airway cells, has not yet been reported. METHODS We first checked the anatomical distribution of ACN9 in lung tissues, using mRNA in situ hybridization, and immunohistochemistry. Gene expression profiling in bronchial epithelial cells (BEAS-2B), was performed, after silencing ACN9. We further tested the roles of ACN9, in the intracellular mechanism, leading to Cd-induced production, of proinflammatory cytokines in BEAS-2B. RESULTS ACN9 was localized in lymphoid, and epithelial cells, of human lung tissues. ACN9 silencing, led to differential expression of 216 genes. Pathways of sensory perception to chemical stimuli, and cell surface receptor-linked signal transduction, were significantly enriched. ACN9 silencing, further increased the expression of proinflammatory cytokines, in BEAS-2B after Cd exposure. CONCLUSION Our findings suggest, that ACN9 may have a role, in the inflammatory response in the airway.
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Affiliation(s)
- Jae Hoon Jeong
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Jeeyoung Kim
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Jeongwoon Kim
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Hye-Ryeon Heo
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Jin Seon Jeong
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Young-Joon Ryu
- Department of Pathology, Kangwon National University School of Medicine, Chuncheon, Korea
| | - Yoonki Hong
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Seon-Sook Han
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Seok-Ho Hong
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Seung-Joon Lee
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
| | - Woo Jin Kim
- Department of Internal Medicine, Kangwon National University School of Medicine, Chuncheon, Korea.,Environmental Health Center, Kangwon National University Hospital, Chuncheon, Korea
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30
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Gonçalves Mota MP, Santos Z, Soares J, Pereira A, Fonseca S, Peixoto F, Gaivão I, Oliveira M. Oxidative Stress Function in Women over 40 Years of Age, Considering Their Lifestyle. Front Endocrinol (Lausanne) 2017; 8:48. [PMID: 28360887 PMCID: PMC5352663 DOI: 10.3389/fendo.2017.00048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 02/27/2017] [Indexed: 01/08/2023] Open
Abstract
Aging is dependent on biological processes that determine the aging of the organism at the cellular level. The Oxidative Stress Theory of Aging might explain some of the age-related changes in cell macromolecules. Moreover, exposome and lifestyle may also induce changes in cell damage induced by oxidative stress. The aim of the present study was to analyze the related redox changes in lymphocyte function of healthy women over 40 years old. Three groups: younger (YG: 40-49 years), middle aged (MAG: 50-59 years), and older (OG: ≥60 years) were evaluated on anthropometric variables, blood pressure, cardiovascular fitness, lifestyle habits, perceived stress, DNA damage, malondialdehyde, catalase activity, and total antioxidant capacity. Physical activity and cardiovascular fitness were significantly higher in YG and MAG as compared to the OG. Systolic blood pressure increased significantly with group age. Frequency and total amount of alcohol intake were lower in the OG and higher in the MAG. No significant differences were observed between the three groups in oxidative stress parameters. Only alcohol consumption was associated with the higher DNA FPG-sensitive sites, and only in the YG (p < 0.05). Healthy lifestyle is critical to avoiding major ailments associated with aging. This may be inferred from the lack of significant differences in the various oxidative stress parameters measured in the healthy women over the age of 40 who took part in the study. Conscious lifestyle behaviors (decrease in alcohol and smoking habits) could have impaired the expected age-related oxidative stress increase.
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Affiliation(s)
- Maria Paula Gonçalves Mota
- Research Centre in Sports, Health and Human Development, Vila Real, Portugal
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- *Correspondence: Maria Paula Gonçalves Mota,
| | - Zirlene Santos
- Research Centre in Sports, Health and Human Development, Vila Real, Portugal
- Faculty Metodista Granbery, Juiz de Fora, Brazil
| | - Jorge Soares
- Research Centre in Sports, Health and Human Development, Vila Real, Portugal
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - Ana Pereira
- Research Centre in Sports, Health and Human Development, Vila Real, Portugal
- Department of Sport Science, School of Education, Research Centre in Education, Polytechnic Institute of Setubal, Setubal, Portugal
| | - Sandra Fonseca
- Research Centre in Sports, Health and Human Development, Vila Real, Portugal
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
| | - Francisco Peixoto
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- Centre for Research and Technology of Agro-Environmental and Biological Sciences, Vila Real, Portugal
| | - Isabel Gaivão
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- Animal and Veterinary Research Centre, Vila Real, Portugal
| | - Maria Oliveira
- University of Trás-os-Montes e Alto Douro, Vila Real, Portugal
- Chemistry Research Centre, Vila Real, Portugal
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Wise RA, Holbrook JT, Criner G, Sethi S, Rayapudi S, Sudini KR, Sugar EA, Burke A, Thimmulappa R, Singh A, Talalay P, Fahey JW, Berenson CS, Jacobs MR, Biswal S. Lack of Effect of Oral Sulforaphane Administration on Nrf2 Expression in COPD: A Randomized, Double-Blind, Placebo Controlled Trial. PLoS One 2016; 11:e0163716. [PMID: 27832073 PMCID: PMC5104323 DOI: 10.1371/journal.pone.0163716] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 09/12/2016] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND COPD patients have high pulmonary and systemic oxidative stress that correlates with severity of disease. Sulforaphane has been shown to induce expression of antioxidant genes via activation of a transcription factor, nuclear factor erythroid-2 related factor 2 (Nrf2). METHODS This parallel, placebo-controlled, phase 2, randomized trial was conducted at three US academic medical centers. Patients who met GOLD criteria for COPD and were able to tolerate bronchoscopies were randomly assigned (1:1:1) to receive placebo, 25 μmoles, or 150 μmoles sulforaphane daily by mouth for four weeks. The primary outcomes were changes in Nrf2 target gene expression (NQ01, HO1, AKR1C1 and AKR1C3) in alveolar macrophages and bronchial epithelial cells. Secondary outcomes included measures of oxidative stress and airway inflammation, and pulmonary function tests. RESULTS Between July 2011 and May 2013, 89 patients were enrolled and randomized. Sulforaphane was absorbed in the patients as evident from their plasma metabolite levels. Changes in Nrf2 target gene expression relative to baseline ranged from 0.79 to 1.45 and there was no consistent pattern among the three groups; the changes were not statistically significantly different from baseline. Changes in measures of inflammation and pulmonary function tests were not different among the groups. Sulforaphane was well tolerated at both dose levels. CONCLUSION Sulforaphane administered for four weeks at doses of 25 μmoles and 150 μmoles to patients with COPD did not stimulate the expression of Nrf2 target genes or have an effect on levels of other anti-oxidants or markers of inflammation. TRIAL REGISTRATION Clinicaltrials.gov: NCT01335971.
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Affiliation(s)
- Robert A. Wise
- Johns Hopkins University, School of Medicine, Baltimore, Maryland, United States of America
| | - Janet T. Holbrook
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Gerard Criner
- Temple University, Philadelphia, Pennsylvania, United States of America
| | - Sanjay Sethi
- University at Buffalo, SUNY and VA WNY Healthcare system, Buffalo, New York, United States of America
| | - Sobharani Rayapudi
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Kuladeep R. Sudini
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Elizabeth A. Sugar
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Alyce Burke
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Rajesh Thimmulappa
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Anju Singh
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
| | - Paul Talalay
- Johns Hopkins University, School of Medicine, Baltimore, Maryland, United States of America
| | - Jed W. Fahey
- Johns Hopkins University, School of Medicine, Baltimore, Maryland, United States of America
| | - Charles S. Berenson
- University at Buffalo, SUNY and VA WNY Healthcare system, Buffalo, New York, United States of America
| | - Michael R. Jacobs
- Temple University, Philadelphia, Pennsylvania, United States of America
| | - Shyam Biswal
- Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, United States of America
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Baker JR, Vuppusetty C, Colley T, Papaioannou AI, Fenwick P, Donnelly L, Ito K, Barnes PJ. Oxidative stress dependent microRNA-34a activation via PI3Kα reduces the expression of sirtuin-1 and sirtuin-6 in epithelial cells. Sci Rep 2016; 6:35871. [PMID: 27767101 PMCID: PMC5073335 DOI: 10.1038/srep35871] [Citation(s) in RCA: 118] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2016] [Accepted: 10/07/2016] [Indexed: 12/18/2022] Open
Abstract
Sirtuin-1 (SIRT1) and SIRT6, NAD+-dependent Class III protein deacetylases, are putative anti-aging enzymes, down-regulated in patients with chronic obstructive pulmonary disease (COPD), which is characterized by the accelerated ageing of the lung and associated with increased oxidative stress. Here, we show that oxidative stress (hydrogen peroxide) selectively elevates microRNA-34a (miR-34a) but not the related miR-34b/c, with concomitant reduction of SIRT1/-6 in bronchial epithelial cells (BEAS2B), which was also observed in peripheral lung samples from patients with COPD. Over-expression of a miR-34a mimic caused a significant reduction in both mRNA and protein of SIRT1/-6, whereas inhibition of miR-34a (antagomir) increased these sirtuins. Induction of miR-34a expression with H2O2 was phosphoinositide-3-kinase (PI3K) dependent as it was associated with PI3Kα activation as well as phosphatase and tensin homolog (PTEN) reduction. Importantly, miR-34a antagomirs increased SIRT1/-6 mRNA levels, whilst decreasing markers of cellular senescence in airway epithelial cells from COPD patients, suggesting that this process is reversible. Other sirtuin isoforms were not affected by miR-34a. Our data indicate that miR-34a is induced by oxidative stress via PI3K signaling, and orchestrates ageing responses under oxidative stress, therefore highlighting miR-34a as a new therapeutic target and biomarker in COPD and other oxidative stress-driven aging diseases.
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Affiliation(s)
- J R Baker
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | - C Vuppusetty
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | - T Colley
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | | | - P Fenwick
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | - Louise Donnelly
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | - K Ito
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
| | - P J Barnes
- Airway Disease Section, National Heart and Lung Institute, Imperial College, London SW3 6LY, U.K
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Williams EJ, Baines KJ, Smart JM, Gibson PG, Wood LG. Rosuvastatin, lycopene and omega-3 fatty acids: A potential treatment for systemic inflammation in COPD; a pilot study. JOURNAL OF NUTRITION & INTERMEDIARY METABOLISM 2016. [DOI: 10.1016/j.jnim.2016.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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Husari A, Hashem Y, Bitar H, Dbaibo G, Zaatari G, El Sabban M. Antioxidant activity of pomegranate juice reduces emphysematous changes and injury secondary to cigarette smoke in an animal model and human alveolar cells. Int J Chron Obstruct Pulmon Dis 2016; 11:227-37. [PMID: 26893554 PMCID: PMC4745850 DOI: 10.2147/copd.s97027] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Cigarette smoke (CS) increases oxidative stress (OS) in the lungs. Pomegranate juice (PJ) possesses potent antioxidant activities, attributed to its polyphenols. This study investigates the effects of PJ on the damaging effects of CS in an animal model and on cultured human alveolar cells (A549). METHODS Male C57BL/6J mice were divided into the following groups: Control, CS, CS + PJ, and PJ. Acute CS exposure was for 3 days, while chronic exposure was for 1 and 3 months (5 days of exposure/week). PJ groups received daily 80 μmol/kg via bottle, while other groups received distilled water. At the end of the experiments, different parameters were studied: 1) expression levels of inflammatory markers, 2) apoptosis, 3) OS, and 4) histopathological changes. In vitro, A549 cells were pretreated for 48 hours with either PJ (0.5 μM) or vehicle. Cells were then exposed to increasing concentrations of CS extracted from collected filters. Cell viability was assessed by counting of live and dead cells with trypan blue staining. RESULTS Acutely, a significant increase in interleukin (IL)-1β, IL-6, and tumor necrosis factor (TNF)-α expression, apoptosis, and OS was noted in CS when compared to Control. PJ significantly attenuated the expression of inflammatory mediators, apoptosis, and OS. Chronically (at 1 and 3 months), increased expression of TNF-α was observed, and lung sections demonstrated emphysematous changes when compared to Control. PJ supplementation to CS animals attenuated the increased expression of TNF-α and normalized lung cytoarchitecture. At the cellular level, CS extract reduced cellular proliferation and triggered cellular death. Pretreatment with PJ attenuated the damaging effects of CS extract on cultured human alveolar cells. CONCLUSION The expression of inflammatory mediators associated with CS exposure and the emphysematous changes noted with chronic CS exposure were reduced with PJ supplementation. In vitro, PJ attenuated the damaging effects of CS extract on cultured human alveolar cells.
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Affiliation(s)
- Ahmad Husari
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Yasmine Hashem
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Hala Bitar
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, American University of Beirut, Beirut, Lebanon
| | - Ghassan Dbaibo
- Department of Pediatrics and Adolescent Medicine, Division of Pediatric Infectious Diseases, American University of Beirut, Beirut, Lebanon; Department of Biochemistry and Molecular Genetics, American University of Beirut, Beirut, Lebanon
| | - Ghazi Zaatari
- Department of Pathology and Laboratory Medicine, American University of Beirut, Beirut, Lebanon
| | - Marwan El Sabban
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut, Beirut, Lebanon
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Bhat TA, Panzica L, Kalathil SG, Thanavala Y. Immune Dysfunction in Patients with Chronic Obstructive Pulmonary Disease. Ann Am Thorac Soc 2015; 12 Suppl 2:S169-75. [PMID: 26595735 PMCID: PMC4722840 DOI: 10.1513/annalsats.201503-126aw] [Citation(s) in RCA: 112] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 05/27/2015] [Indexed: 01/09/2023] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a complex chronic disease. Chronic inflammation is the hallmark of COPD, involving the interplay of a wide variety of cells in the lung microenvironment. Cigarette smoke (CS) induces chronic lung inflammation and is considered a key etiological factor in the development and pathogenesis of COPD. Structural and inflammatory cells in the lung respond to CS exposure by releasing proinflammatory mediators that recruit additional inflammatory immune cells, which collectively contribute to the establishment of a chronic inflammatory microenvironment. Chronic inflammation contributes to lung damage, compromises innate and adaptive immune responses, and facilitates the recurrent episodes of respiratory infection that punctuate and further contribute to the pathological manifestations of the stable disease. A number of studies support the conclusion that immune dysfunction leads to exacerbations and disease severity in COPD. Our group has clearly demonstrated that CS exacerbates lung inflammation and compromises immunity to respiratory pathogens in a mouse model of COPD. We have also investigated the phenotype of immune cells in patients with COPD compared with healthy control subjects and found extensive immune dysfunction due to the presence and functional activity of T regulatory cells, CD4(+)PD-1(+) exhausted effector T cells and myeloid-derived suppressor cells. Manipulation of these immunosuppressive networks in COPD could provide a rational strategy to restore functional immune responses, reduce exacerbations, and improve lung function. In this review, we discuss the role of immune dysfunction in COPD that may contribute to recurrent respiratory infections and disease severity.
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Affiliation(s)
- Tariq A Bhat
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
| | - Louis Panzica
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
| | | | - Yasmin Thanavala
- Department of Immunology, Roswell Park Cancer Institute, Buffalo, New York
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Awji EG, Seagrave JC, Tesfaigzi Y. Correlation of Cigarette Smoke-Induced Pulmonary Inflammation and Emphysema in C3H and C57Bl/6 Mice. Toxicol Sci 2015; 147:75-83. [PMID: 26032511 PMCID: PMC4830240 DOI: 10.1093/toxsci/kfv108] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Cigarette smoke (CS)-exposed mice have been used to model airway inflammation and emphesema in humans; however, the impact of exposure duration, sex, and strain differences in susceptibility to progression of airway inflammation and to emphesema are poorly investigated. This study was designed to determine the association between inflammation and emphysema by exposing 2 strains of mice, C3H/HeN (C3H) and C57BL/6 (Bl/6), to filtered air (FA) or CS for 10, 16, or 22 weeks. Both genders and strains of CS-exposed mice developed pulmonary inflammation as characterized by cell counts in the bronchoalveolar lavage fluid (BALF) and the levels of matrix metalloproteinases (MMPs) in the BALF. CS exposure caused persistently higher number of BALF macrophages in C3H compared to BL/6 mice, while more BALF neutrophils and persistently higher MMP-2 and MMP-9 levels were observed in BL/6 mice. The mean linear intercept (Lm) increased progressively by 26%, 33%, and 55% at 10, 16, and 22 weeks, respectively, in CS-exposed C3H mice compared to the matched air controls. In BL/6 mice, although CS exposure also increased the Lm compared to FA controls, no further increase in Lm beyond the levels observed at 16 weeks of exposure was observed by 22 weeks. These findings suggest that extent of inflammation is not associated with severity of emphysema and underscores the importance of carefully selecting the mouse strains and endpoints when exploring effective treatments for emphesema.
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Affiliation(s)
- Elias G Awji
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM 87108
| | - Jean Clare Seagrave
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM 87108
| | - Yohannes Tesfaigzi
- COPD Program, Lovelace Respiratory Research Institute, Albuquerque, NM 87108
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Song HH, Shin IS, Woo SY, Lee SU, Sung MH, Ryu HW, Kim DY, Ahn KS, Lee HK, Lee D, Oh SR. Piscroside C, a novel iridoid glycoside isolated from Pseudolysimachion rotundum var. subinegrum suppresses airway inflammation induced by cigarette smoke. JOURNAL OF ETHNOPHARMACOLOGY 2015; 170:20-27. [PMID: 25937253 DOI: 10.1016/j.jep.2015.04.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/23/2014] [Revised: 03/24/2015] [Accepted: 04/22/2015] [Indexed: 06/04/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Pseudolysimachion rotundum var. subintegrum (Speedwell, Plantaginaceae) is used as a traditional herbal medicine for treating bronchitis, cough and asthma in Korea, China, Russia, and Europe. AIM OF THE STUDY In this study, we investigated the protective effects of the novel iridoid glycoside, piscroside C (compound 1) isolated from the methanolic extract of P. rotundum var. subintegrum against inflammatory responses using a cigarette smoke induced chronic obstructive pulmonary disease (COPD) and TNF-α-stimulated human airway epithelial NCI-H292 cells. MATERIALS AND METHODS The novel iridoid glycoside piscroside C was isolated from the methanolic extract of P. rotundum var. subintegrum. The chemical structure was established by NMR, HRESIMS, and optical rotation. In in vivo experiment, the mice received 1h of cigarette smoke for 3 days. Piscroside C was administered to mice by oral gavage 1h before cigarette smoke exposure for 3 days. In in vitro experiment, we evaluated the effect of piscroside C on proinflammatory mediators in H292 cells stimulated with TNF-α. RESULTS Piscroside C significantly reduced the neutrophil influx, reactive oxygen species production, IL-6, TNF-α, and elastase activity in bronchoalveolar lavage fluid in COPD animals. In addition, piscroside C attenuated NF-κB and IκB phosphorylation, leading to reduced recruitment of inflammatory cells into the lung tissue. Consistent with the results of in vivo experiment, piscroside C significantly inhibited the expression of inflammatory cytokines (IL-6, IL-8 and IL-1β) by inhibiting NF-κB activation, as resulting decrease in the phosphorylation of IKKβ, IκBα and TAK1 in TNF-α-stimulated H292 cells. CONCLUSION These findings indicate that piscroside C effectively inhibits inflammatory responses, which is an important process in the development of COPD through suppression of IKK/NF-κB activation. Our study suggest that piscroside C might represent a useful therapeutic for the treatment of inflammatory airway disease.
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Affiliation(s)
- Hyuk-Hwan Song
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - In-Sik Shin
- College of Veterinary Medicine, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea
| | - So Yeun Woo
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea; Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Su Ui Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Min Hee Sung
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Hyung Won Ryu
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Doo-Young Kim
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Kyung-Seop Ahn
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Hyeong-Kyu Lee
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea
| | - Dongho Lee
- Department of Biosystems and Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 136-713, Republic of Korea
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience & Biotechnology, 30 Yeongudanji-ro, Ochang-eup, Cheong-ju, Chungbuk 363-883, Republic of Korea.
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Molecular mechanisms of the impact of smoke-oxidants. ACTA ACUST UNITED AC 2015; 67:377-82. [DOI: 10.1016/j.etp.2015.04.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2014] [Revised: 04/04/2015] [Accepted: 04/07/2015] [Indexed: 01/01/2023]
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Cho HY, Jedlicka AE, Gladwell W, Marzec J, McCaw ZR, Bienstock RJ, Kleeberger SR. Association of Nrf2 polymorphism haplotypes with acute lung injury phenotypes in inbred strains of mice. Antioxid Redox Signal 2015; 22:325-38. [PMID: 25268541 PMCID: PMC4298158 DOI: 10.1089/ars.2014.5942] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
AIMS Nrf2 is a master transcription factor for antioxidant response element (ARE)-mediated cytoprotective gene induction. A protective role for pulmonary Nrf2 was determined in model oxidative disorders, including hyperoxia-induced acute lung injury (ALI). To obtain additional insights into the function and genetic regulation of Nrf2, we assessed functional single nucleotide polymorphisms (SNPs) of Nrf2 in inbred mouse strains and tested whether sequence variation is associated with hyperoxia susceptibility. RESULTS Nrf2 SNPs were compiled from publicly available databases and by re-sequencing DNA from inbred strains. Hierarchical clustering of Nrf2 SNPs categorized the strains into three major haplotypes. Hyperoxia susceptibility was greater in haplotypes 2 and 3 strains than in haplotype 1 strains. A promoter SNP -103 T/C adding an Sp1 binding site in haplotype 2 diminished promoter activation basally and under hyperoxia. Haplotype 3 mice bearing nonsynonymous coding SNPs located in (1862 A/T, His543Gln) and adjacent to (1417 T/C, Thr395Ile) the Neh1 domain showed suppressed nuclear transactivation of pulmonary Nrf2 relative to other strains, and overexpression of haplotype 3 Nrf2 showed lower ARE responsiveness than overexpression of haplotype 1 Nrf2 in airway cells. Importantly, we found a significant correlation of Nrf2 haplotypes and hyperoxic lung injury phenotypes. INNOVATION AND CONCLUSION The results indicate significant influence of Nrf2 polymorphisms and haplotypes on gene function and hyperoxia susceptibility. Our findings further support Nrf2 as a genetic determinant in ALI pathogenesis and provide useful tools for investigators who use mouse strains classified by Nrf2 haplotypes to elucidate the role for Nrf2 in oxidative disorders.
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Affiliation(s)
- Hye-Youn Cho
- 1 Laboratory of Respiratory Biology, National Institute of Environmental Health Sciences, National Institutes of Health , Research Triangle Park, North Carolina
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Ballweg K, Mutze K, Königshoff M, Eickelberg O, Meiners S. Cigarette smoke extract affects mitochondrial function in alveolar epithelial cells. Am J Physiol Lung Cell Mol Physiol 2014; 307:L895-907. [PMID: 25326581 DOI: 10.1152/ajplung.00180.2014] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Cigarette smoke is the main risk factor for chronic obstructive pulmonary disease (COPD). Exposure of cells to cigarette smoke induces an initial adaptive cellular stress response involving increased oxidative stress and induction of inflammatory signaling pathways. Exposure of mitochondria to cellular stress alters their fusion/fission dynamics. Whereas mild stress induces a prosurvival response termed stress-induced mitochondrial hyperfusion, severe stress results in mitochondrial fragmentation and mitophagy. In the present study, we analyzed the mitochondrial response to mild and nontoxic doses of cigarette smoke extract (CSE) in alveolar epithelial cells. We characterized mitochondrial morphology, expression of mitochondrial fusion and fission genes, markers of mitochondrial proteostasis, as well as mitochondrial functions such as membrane potential and oxygen consumption. Murine lung epithelial (MLE)12 and primary mouse alveolar epithelial cells revealed pronounced mitochondrial hyperfusion upon treatment with CSE, accompanied by increased expression of the mitochondrial fusion protein mitofusin 2 and increased metabolic activity. We did not observe any alterations in mitochondrial proteostasis, i.e., induction of the mitochondrial unfolded protein response or mitophagy. Therefore, our data indicate an adaptive prosurvival response of mitochondria of alveolar epithelial cells to nontoxic concentrations of CSE. A hyperfused mitochondrial network, however, renders the cell more vulnerable to additional stress, such as sustained cigarette smoke exposure. As such, cigarette smoke-induced mitochondrial hyperfusion, although part of a beneficial adaptive stress response in the first place, may contribute to the pathogenesis of COPD.
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Affiliation(s)
- Korbinian Ballweg
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig-Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Kathrin Mutze
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig-Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Melanie Königshoff
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig-Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig-Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
| | - Silke Meiners
- Comprehensive Pneumology Center (CPC), University Hospital Ludwig-Maximilians University, Helmholtz Zentrum München, Munich, Member of the German Center for Lung Research (DZL), Germany
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Hartney JM, Stidham T, Goldstrohm DA, Oberley-Deegan RE, Weaver MR, Valnickova-Hansen Z, Scavenius C, Benninger RKP, Leahy KF, Johnson R, Gally F, Kosmider B, Zimmermann AK, Enghild JJ, Nozik-Grayck E, Bowler RP. A common polymorphism in extracellular superoxide dismutase affects cardiopulmonary disease risk by altering protein distribution. ACTA ACUST UNITED AC 2014; 7:659-66. [PMID: 25085920 DOI: 10.1161/circgenetics.113.000504] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND The enzyme extracellular superoxide dismutase (EC-SOD; SOD3) is a major antioxidant defense in lung and vasculature. A nonsynonomous single-nucleotide polymorphism in EC-SOD (rs1799895) leads to an arginine to glycine amino acid substitution at position 213 (R213G) in the heparin-binding domain. In recent human genetic association studies, this single-nucleotide polymorphism attenuates the risk of lung disease, yet paradoxically increases the risk of cardiovascular disease. METHODS AND RESULTS Capitalizing on the complete sequence homology between human and mouse in the heparin-binding domain, we created an analogous R213G single-nucleotide polymorphism knockin mouse. The R213G single-nucleotide polymorphism did not change enzyme activity, but shifted the distribution of EC-SOD from lung and vascular tissue to extracellular fluid (eg, bronchoalveolar lavage fluid and plasma). This shift reduces susceptibility to lung disease (lipopolysaccharide-induced lung injury) and increases susceptibility to cardiopulmonary disease (chronic hypoxic pulmonary hypertension). CONCLUSIONS We conclude that EC-SOD provides optimal protection when localized to the compartment subjected to extracellular oxidative stress: thus, the redistribution of EC-SOD from the lung and pulmonary circulation to the extracellular fluids is beneficial in alveolar lung disease but detrimental in pulmonary vascular disease. These findings account for the discrepant risk associated with R213G in humans with lung diseases compared with cardiovascular diseases.
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Affiliation(s)
- John M Hartney
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Timothy Stidham
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - David A Goldstrohm
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Rebecca E Oberley-Deegan
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Michael R Weaver
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Zuzana Valnickova-Hansen
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Carsten Scavenius
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Richard K P Benninger
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Katelyn F Leahy
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Richard Johnson
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Fabienne Gally
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Beata Kosmider
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Angela K Zimmermann
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Jan J Enghild
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Eva Nozik-Grayck
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.)
| | - Russell P Bowler
- From the Department of Medicine, National Jewish Health, Denver, CO (J.M.H., D.A.G., R.E.O.-D., M.R.W., K.F.L., F.G., B.K., R.P.B.); Integrated Department of Immunology, University of Colorado, Denver (J.M.H.); Departments of Pediatrics (T.S., R.K.P.B., R.J., E.N.-G.) and Bioengineering (R.K.P.B.), University of Colorado School of Medicine, Aurora; Department of Molecular Biology and Genetics, Aarhus University, Aarhus, Denmark (Z.V.-H., C.S., J.J.E.); and Institut de Biologie du Developpement de Marseille Luminy, Aix-Marseille University, Marseille, France (A.K.Z.).
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Zuo L, He F, Sergakis GG, Koozehchian MS, Stimpfl JN, Rong Y, Diaz PT, Best TM. Interrelated role of cigarette smoking, oxidative stress, and immune response in COPD and corresponding treatments. Am J Physiol Lung Cell Mol Physiol 2014; 307:L205-18. [DOI: 10.1152/ajplung.00330.2013] [Citation(s) in RCA: 163] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Cigarette smoking (CS) can impact the immune system and induce pulmonary disorders such as chronic obstructive pulmonary disease (COPD), which is currently the fourth leading cause of chronic morbidity and mortality worldwide. Accordingly, the most significant risk factor associated with COPD is exposure to cigarette smoke. The purpose of the present study is to provide an updated overview of the literature regarding the effect of CS on the immune system and lungs, the mechanism of CS-induced COPD and oxidative stress, as well as the available and potential treatment options for CS-induced COPD. An extensive literature search was conducted on the PubMed/Medline databases to review current COPD treatment research, available in the English language, dating from 1976 to 2014. Studies have investigated the mechanism by which CS elicits detrimental effects on the immune system and pulmonary function through the use of human and animal subjects. A strong relationship among continued tobacco use, oxidative stress, and exacerbation of COPD symptoms is frequently observed in COPD subjects. In addition, therapeutic approaches emphasizing smoking cessation have been developed, incorporating counseling and nicotine replacement therapy. However, the inability to reverse COPD progression establishes the need for improved preventative and therapeutic strategies, such as a combination of intensive smoking cessation treatment and pharmaceutical therapy, focusing on immune homeostasis and redox balance. CS initiates a complex interplay between oxidative stress and the immune response in COPD. Therefore, multiple approaches such as smoking cessation, counseling, and pharmaceutical therapies targeting inflammation and oxidative stress are recommended for COPD treatment.
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Affiliation(s)
- Li Zuo
- Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Feng He
- Department of Health and Kinesiology, Purdue University, Lafayette, Indiana
| | - Georgianna G. Sergakis
- Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Majid S. Koozehchian
- Exercise and Sport Nutrition Laboratory, Department of Health & Kinesiology, Texas A&M University, College Station, Texas
| | - Julia N. Stimpfl
- Respiratory Therapy Division, School of Health and Rehabilitation Sciences, The Ohio State University College of Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Yi Rong
- Department of Radiation Oncology, James Cancer Hospital, The Ohio State University Wexner Medical Center, Columbus, Ohio; and
| | - Philip T. Diaz
- Division of Pulmonary, Allergy, Critical Care & Sleep Medicine, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Thomas M. Best
- Division of Sports Medicine, Department of Family Medicine, Sports Health & Performance Institute, The Ohio State University Wexner Medical Center, Columbus, Ohio
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Agler AH, Crystal RG, Mezey JG, Fuller J, Gao C, Hansen JG, Cassano PA. Differential expression of vitamin E and selenium-responsive genes by disease severity in chronic obstructive pulmonary disease. COPD 2014; 10:450-8. [PMID: 23875740 DOI: 10.3109/15412555.2012.761958] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Antioxidant nutritional status is hypothesized to influence chronic obstructive pulmonary disease (COPD) susceptibility and progression. Although past studies relate antioxidants to gene expression, there are no data in patients with COPD. This study investigated the hypothesis that antioxidant status is compromised in patients with COPD, and antioxidant-responsive genes differentially express in a similar pattern. Lung tissue samples from patients with COPD were assayed for vitamin E and gene expression. Selenium and vitamin E were assayed in corresponding plasma samples. Discovery based genome-wide expression analysis compared moderate, severe, and very severe COPD (GOLD II-IV) patients to mild and at-risk/normal (GOLD 0-I). Hypotheses-driven analyses assessed differential gene expression by disease severity for vitamin E-responsive and selenium-responsive genes. GOLD II-IV COPD patients had 30% lower lung tissue vitamin E levels compared to GOLD 0-I participants (p = 0.0082). No statistically significant genome-wide differences in expression by disease severity were identified. Hypothesis-driven analyses of 109 genes found 16 genes differentially expressed (padjusted < 0.05) by disease severity including 6 selenium-responsive genes (range in fold-change -1.39 to 2.25), 6 vitamin E-responsive genes (fold-change -2.30 to 1.51), and 4 COPD-associated genes. Lung tissue vitamin E in patients with COPD was associated with disease severity and vitamin E-responsive genes were differentially expressed by disease severity. Although nutritional status is hypothesized to contribute to COPD risk, and is of therapeutic interest, evidence to date is mainly observational. The findings reported herein are novel, and support a role of vitamin E in COPD progression.
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Affiliation(s)
- Anne H Agler
- Division of Nutritional Sciences, Cornell University, Ithaca, NY 14853, USA
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Bowler RP, Bahr TM, Hughes G, Lutz S, Kim YI, Coldren CD, Reisdorph N, Kechris KJ. Integrative omics approach identifies interleukin-16 as a biomarker of emphysema. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2013; 17:619-26. [PMID: 24138069 DOI: 10.1089/omi.2013.0038] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Interleukin-16 (IL-16) is a multifunctional cytokine that has been associated with autoimmune and allergic diseases. To investigate comprehensively whether IL-16 is also associated with chronic obstructive pulmonary disease (COPD) and emphysema, we performed an integrated analysis of multiple "omics" data. Over 500 subjects participating in the COPDGene® study donated blood and were clinically characterized and genetically profiled. IL-16 mRNA levels were measured in peripheral blood mononuclear cells (PBMC), and protein levels were measured in fresh frozen plasma. A multivariate analysis found plasma IL-16 positively associated with age and body mass index, and negatively associated with current smoking and emphysema in the upper lobes. PBMC IL-16 expression was positively associated with gender and a composite score for airflow obstruction, emphysema, and gas trapping. Whole-genome expression quantitative trait locus (eQTL) analysis identified a novel IL-16 missense SNP (rs11556218) associated with lower IL-16 in plasma. In summary, an integrated "omics" analysis in a very large cohort identified an association between decreased IL-16 and emphysema and discovered a novel IL-16 cis-eQTL. Thus IL-16 plasma levels and IL-16 genotyping may be useful in a personalized medicine approach for lung disease.
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Affiliation(s)
- Russell P Bowler
- 1 Department of Medicine, National Jewish Health , Denver, Colorado
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Rach J, Budde J, Möhle N, Aufderheide M. Direct exposure at the air-liquid interface: evaluation of an in vitro approach for simulating inhalation of airborne substances. J Appl Toxicol 2013; 34:506-15. [PMID: 23765558 DOI: 10.1002/jat.2899] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Revised: 04/10/2013] [Accepted: 04/22/2013] [Indexed: 11/08/2022]
Abstract
In toxicology, the strategies for testing the hazardous potential of substances are changing as a result of the ongoing progress in the development of in vitro methods and the demand of the authorities to reduce animal testing. Even in the complex field of inhalation toxicology with its high requirements on the technical implementation and cell culture models, the preconditions for using such methods are fulfilled. We here introduce a sophisticated technique that enables the stable and reproducible exposure of cultivated cells to airborne substances at the air-liquid interface by means of the CULTEX(®) Radial Flow System (RFS) module. The feasibility and suitability of the experimental setup is demonstrated by dose-response investigations of mainstream cigarette smoke and particulate matter of four substances in different lung epithelial cell lines. A dose-dependent cytotoxcity of the test substances was verified by applying different exposure times. The high reproducibility of the results indicate the reliability of the presented method and recommend the integration of such in vitro approaches in the field of inhalation toxicology by advancing their regulatory validation.
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Affiliation(s)
- Jessica Rach
- CULTEX Laboratories GmbH, Feodor-Lynen-Str. 21, 30625, Hannover, Germany
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Durham AL, McLaren A, Hayes BP, Caramori G, Clayton CL, Barnes PJ, Chung KF, Adcock IM. Regulation of Wnt4 in chronic obstructive pulmonary disease. FASEB J 2013; 27:2367-81. [PMID: 23463699 DOI: 10.1096/fj.12-217083] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Chronic obstructive pulmonary disease (COPD) is associated with persistent inflammation and oxidative stress in susceptible individuals. Using microarray analysis of bronchial biopsy samples from patients with COPD and controls, we identified Wnt4 as being up-regulated in COPD. Analysis of bronchial biopsy samples showed a very strong correlation between Wnt4 and IL8 gene expression, suggesting that Wnt4 plays a role in chronic lung inflammation. In vitro, Wnt4 induced proliferation and inflammation in human epithelial cells (BEAS-2B) and normal primary human bronchial epithelial cells in a concentration-dependent manner. This effect was enhanced in the presence of interleukin-1β (IL-1β) as a result of activation of the p38 and c-Jun NH2-terminal kinase mitogen-activated protein kinase pathways. Hydrogen peroxide, but not proinflammatory stimuli, up-regulated Wnt4 expression in epithelial cells. In monocytic THP-1 and primary airway smooth muscle cells, Wnt4 induced inflammation and enhanced the inflammatory response to lipopolysaccharide and IL-1β but did not induce proliferation. In addition, these other cell types did not have enhanced Wnt4 expression in response to hydrogen peroxide. Our results indicate that airway epithelial activation, due to oxidative stress, may lead to Wnt4 induction. Wnt4, in turn, acts through the noncanonical pathway to activate epithelial cell remodeling and IL8 gene expression, leading to neutrophil infiltration and inflammation.
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Affiliation(s)
- Andrew L Durham
- Airways Disease Section, National Heart and Lung Institute, Imperial College London, London, UK.
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Abstract
Carbon monoxide (CO), a low molecular weight gas, is a ubiquitous environmental product of organic combustion, which is also produced endogenously in the body, as the byproduct of heme metabolism. CO binds to hemoglobin, resulting in decreased oxygen delivery to bodily tissues at toxicological concentrations. At physiological concentrations, CO may have endogenous roles as a potential signaling mediator in vascular function and cellular homeostasis. Exhaled CO (eCO), similar to exhaled nitric oxide (eNO), has been evaluated as a candidate breath biomarker of pathophysiological states, including smoking status, and inflammatory diseases of the lung and other organs. eCO values have been evaluated as potential indicators of inflammation in asthma, stable COPD and exacerbations, cystic fibrosis, lung cancer, or during surgery or critical care. The utility of eCO as a marker of inflammation and its potential diagnostic value remain incompletely characterized. Among other candidate 'medicinal gases' with therapeutic potential, (e.g., NO and H2S), CO has been shown to act as an effective anti-inflammatory agent in preclinical animal models of inflammatory disease, acute lung injury, sepsis, ischemia/reperfusion injury and organ graft rejection. Current and future clinical trials will evaluate the clinical applicability of this gas as a biomarker and/or therapeutic in human disease.
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Affiliation(s)
- Stefan W Ryter
- Pulmonary and Critical Care Medicine, Brigham and Women’s Hospital, Harvard Medical School, 75 Francis Street, Boston, MA 02115, USA.
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Abstract
Peroxiredoxins (Prxs) are a family of peroxidases that maintain thiol homeostasis by catalyzing the reduction of organic hydroperoxides, H2O2, and peroxynitrite. Eukaryotic 2-Cys-Prxs, also referred to as typical Prxs, can be inactivated by oxidation of the catalytic cysteine to sulfinic acid, which may regulate the intracellular messenger function of H2O2. A small redox protein, sulfiredoxin (Srx), has been shown to reduce sulfinylated 2-Cys-Prxs and thus to regenerate active 2-Cys-Prxs. We previously reported that cytokine-induced nitric oxide (NO) intervenes in this pathway by decreasing the level of 2-Cys overoxidation and by upregulating Srx through the activation of the transcription factor nuclear factor erythroid 2-related factor (Nrf2). Here, we describe the methods used to monitor the interplay between NO and H2O2 in the regulation of the Prx/Srx system in immunostimulated macrophages, which produce both reactive oxygen species and NO.
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Cho HY, van Houten B, Wang X, Miller-DeGraff L, Fostel J, Gladwell W, Perrow L, Panduri V, Kobzik L, Yamamoto M, Bell DA, Kleeberger SR. Targeted deletion of nrf2 impairs lung development and oxidant injury in neonatal mice. Antioxid Redox Signal 2012; 17:1066-82. [PMID: 22400915 PMCID: PMC3423869 DOI: 10.1089/ars.2011.4288] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
AIMS Nrf2 is an essential transcription factor for protection against oxidant disorders. However, its role in organ development and neonatal disease has received little attention. Therapeutically administered oxygen has been considered to contribute to bronchopulmonary dysplasia (BPD) in prematurity. The current study was performed to determine Nrf2-mediated molecular events during saccular-to-alveolar lung maturation, and the role of Nrf2 in the pathogenesis of hyperoxic lung injury using newborn Nrf2-deficient (Nrf2(-/-)) and wild-type (Nrf2(+/+)) mice. RESULTS Pulmonary basal expression of cell cycle, redox balance, and lipid/carbohydrate metabolism genes was lower while lymphocyte immunity genes were more highly expressed in Nrf2(-/-) neonates than in Nrf2(+/+) neonates. Hyperoxia-induced phenotypes, including mortality, arrest of saccular-to-alveolar transition, and lung edema, and inflammation accompanying DNA damage and tissue oxidation were significantly more severe in Nrf2(-/-) neonates than in Nrf2(+/+) neonates. During lung injury pathogenesis, Nrf2 orchestrated expression of lung genes involved in organ injury and morphology, cellular growth/proliferation, vasculature development, immune response, and cell-cell interaction. Bioinformatic identification of Nrf2 binding motifs and augmented hyperoxia-induced inflammation in genetically deficient neonates supported Gpx2 and Marco as Nrf2 effectors. INNOVATION This investigation used lung transcriptomics and gene targeted mice to identify novel molecular events during saccular-to-alveolar stage transition and to elucidate Nrf2 downstream mechanisms in protection from hyperoxia-induced injury in neonate mouse lungs. CONCLUSION Nrf2 deficiency augmented lung injury and arrest of alveolarization caused by hyperoxia during the newborn period. Results suggest a therapeutic potential of specific Nrf2 activators for oxidative stress-associated neonatal disorders including BPD.
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Affiliation(s)
- Hye-Youn Cho
- Laboratory of Respiratory Biology, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, North Carolina 27709, USA.
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