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Wijesinghe AI, Kobayashi N, Kitazawa S, Maki N, Yanagihara T, Saeki Y, Kikuchi S, Goto Y, Ichimura H, Sato Y. Sex-specific emphysematous changes evaluated by a three-dimensional computed tomography volumetric analysis among patients with smoking histories who underwent resection for lung cancer. Surg Today 2024; 54:113-121. [PMID: 37271799 DOI: 10.1007/s00595-023-02707-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 05/02/2023] [Indexed: 06/06/2023]
Abstract
PURPOSE The present study evaluated the sex-specific susceptibility to the development of emphysema in patients with smoking histories who underwent lung cancer surgeries. METHODS Lung cancer patients with smoking histories who underwent lung resection at the University of Tsukuba Hospital, Japan, were enrolled. Radiologic emphysematous changes were analyzed using three-dimensional computed tomography (3D-CT). The volume proportion of emphysematous lung per unit of smoking and the relationship between emphysematous change and clinicopathologic factors were evaluated. RESULTS Radiologic emphysematous changes analyzed using 3D-CT per pack-year smoked, defined as the Smoking-Emphysema Index (SEI), were greater in females than males. The difference was more profound in adenocarcinoma patients than in non-adenocarcinoma patients (0.70 ± 2.30 vs. 0.21 ± 0.28, P = 0.037). CONCLUSION Female lung cancer patients are more susceptible to smoking-induced emphysema than males. The SEI may be an effective indicator for evaluating smoking-induced emphysema.
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Affiliation(s)
- Ashoka Indranatha Wijesinghe
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Naohiro Kobayashi
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Shinsuke Kitazawa
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Naoki Maki
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Takahiro Yanagihara
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Yusuke Saeki
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Shinji Kikuchi
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Yukinobu Goto
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Hideo Ichimura
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan
| | - Yukio Sato
- Department of Thoracic Surgery, Faculty of Medicine, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8577, Japan.
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Shakeel I, Ashraf A, Afzal M, Sohal SS, Islam A, Kazim SN, Hassan MI. The Molecular Blueprint for Chronic Obstructive Pulmonary Disease (COPD): A New Paradigm for Diagnosis and Therapeutics. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:2297559. [PMID: 38155869 PMCID: PMC10754640 DOI: 10.1155/2023/2297559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 10/28/2023] [Accepted: 11/30/2023] [Indexed: 12/30/2023]
Abstract
The global prevalence of chronic obstructive pulmonary disease (COPD) has increased over the last decade and has emerged as the third leading cause of death worldwide. It is characterized by emphysema with prolonged airflow limitation. COPD patients are more susceptible to COVID-19 and increase the disease severity about four times. The most used drugs to treat it show numerous side effects, including immune suppression and infection. This review discusses a narrative opinion and critical review of COPD. We present different aspects of the disease, from cellular and inflammatory responses to cigarette smoking in COPD and signaling pathways. In addition, we highlighted various risk factors for developing COPD apart from smoking, like occupational exposure, pollutants, genetic factors, gender, etc. After the recent elucidation of the underlying inflammatory signaling pathways in COPD, new molecular targeted drug candidates for COPD are signal-transmitting substances. We further summarize recent developments in biomarker discovery for COPD and its implications for disease diagnosis. In addition, we discuss novel drug targets for COPD that could be explored for drug development and subsequent clinical management of cardiovascular disease and COVID-19, commonly associated with COPD. Our extensive analysis of COPD cause, etiology, diagnosis, and therapeutic will provide a better understanding of the disease and the development of effective therapeutic options. In-depth knowledge of the underlying mechanism will offer deeper insights into identifying novel molecular targets for developing potent therapeutics and biomarkers of disease diagnosis.
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Affiliation(s)
- Ilma Shakeel
- Department of Zoology, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Anam Ashraf
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Mohammad Afzal
- Department of Zoology, Aligarh Muslim University, Aligarh, Uttar Pradesh 202002, India
| | - Sukhwinder Singh Sohal
- Respiratory Translational Research Group, Department of Laboratory Medicine, School of Health Sciences, College of Health and Medicine, University of Tasmania, Launceston, Tasmania 7248, Australia
| | - Asimul Islam
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Syed Naqui Kazim
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
| | - Md. Imtaiyaz Hassan
- Centre for Interdisciplinary Research in Basic Sciences, Jamia Millia Islamia, Jamia Nagar, New Delhi 110025, India
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Park B, An J, Kim W, Kang HY, Koh SB, Oh B, Jung KJ, Jee SH, Kim WJ, Cho MH, Silverman EK, Park T, Won S. Effect of 6p21 region on lung function is modified by smoking: a genome-wide interaction study. Sci Rep 2020; 10:13075. [PMID: 32753590 PMCID: PMC7403370 DOI: 10.1038/s41598-020-70092-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Accepted: 07/15/2020] [Indexed: 11/10/2022] Open
Abstract
Smoking is a major risk factor for chronic obstructive pulmonary disease (COPD); however, more than 25% of COPD patients are non-smokers, and gene-by-smoking interactions are expected to affect COPD onset. We aimed to identify the common genetic variants interacting with pack-years of smoking on FEV1/FVC ratios in individuals with normal lung function. A genome-wide interaction study (GWIS) on FEV1/FVC was performed for individuals with FEV1/FVC ratio ≥ 70 in the Korea Associated Resource cohort data, and significant SNPs were validated using data from two other Korean cohorts. The GWIS revealed that rs10947231 and rs8192575 met genome-wide significant levels; For \documentclass[12pt]{minimal}
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\begin{document}$${\text{H}}_{0} :\beta_{SNP} = \beta_{SNP*pack - years} = 0{\text{ vs H}}_{1} : not {\text{H}}_{0} ,$$\end{document}H0:βSNP=βSNP∗pack-years=0vs H1:notH0, the likelihood ratio (LR) test was conducted, and its P values, PLR, for rs10947231 and rs8192575 were 2.23 × 10–12 and 1.18 × 10–8, respectively. Interaction between rs8192575 and smoking is significantly replicated with two additional data (PINT = 0.0454, 0.0131). Expression quantitative trait loci, topologically associated domains, and PrediXcan analyses revealed that rs8192575 is significantly associated with AGER expression. SNPs on the 6p21 region are associated with FEV1/FVC, and the effect of smoking on FEV1/FVC differs among the associated genotypes.
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Affiliation(s)
- Boram Park
- Department of Public Health Sciences, Seoul National University, Seoul, South Korea
| | - Jaehoon An
- Department of Public Health Sciences, Seoul National University, Seoul, South Korea
| | - Wonji Kim
- Interdisciplinary Program of Bioinformatics, Seoul National University, Seoul, South Korea
| | - Hae Yeon Kang
- Department of Internal Medicine, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, South Korea
| | - Sang Baek Koh
- Department of Preventive Medicine, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Bermseok Oh
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul, South Korea
| | - Keum Ji Jung
- Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, South Korea
| | - Sun Ha Jee
- Institute for Health Promotion, Graduate School of Public Health, Yonsei University, Seoul, South Korea
| | - Woo Jin Kim
- Department of Internal Medicine and Environmental Health Center, Kangwon National University Hospital, School of Medicine, Kangwon University, Chuncheon, South Korea
| | - Michael H Cho
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Edwin K Silverman
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA.,Division of Pulmonary and Critical Care Medicine, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Taesung Park
- Interdisciplinary Program of Bioinformatics, Seoul National University, Seoul, South Korea. .,Department of Statistics, Seoul National University, Seoul, South Korea.
| | - Sungho Won
- Department of Public Health Sciences, Seoul National University, Seoul, South Korea. .,Interdisciplinary Program of Bioinformatics, Seoul National University, Seoul, South Korea. .,Institute of Health and Environment, Seoul National University, Seoul, South Korea.
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Genome-wide assessment of gene-by-smoking interactions in COPD. Sci Rep 2018; 8:9319. [PMID: 29915320 PMCID: PMC6006158 DOI: 10.1038/s41598-018-27463-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Accepted: 05/30/2018] [Indexed: 12/14/2022] Open
Abstract
Cigarette smoke exposure is a major risk factor in chronic obstructive pulmonary disease (COPD) and its interactions with genetic variants could affect lung function. However, few gene-smoking interactions have been reported. In this report, we evaluated the effects of gene-smoking interactions on lung function using Korea Associated Resource (KARE) data with the spirometric variables—forced expiratory volume in 1 s (FEV1). We found that variations in FEV1 were different among smoking status. Thus, we considered a linear mixed model for association analysis under heteroscedasticity according to smoking status. We found a previously identified locus near SOX9 on chromosome 17 to be the most significant based on a joint test of the main and interaction effects of smoking. Smoking interactions were replicated with Gene-Environment of Interaction and phenotype (GENIE), Multi-Ethnic Study of Atherosclerosis-Lung (MESA-Lung), and COPDGene studies. We found that individuals with minor alleles, rs17765644, rs17178251, rs11870732, and rs4793541, tended to have lower FEV1 values, and lung function decreased much faster with age for smokers. There have been very few reports to replicate a common variant gene-smoking interaction, and our results revealed that statistical models for gene-smoking interaction analyses should be carefully selected.
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Guo S, Sun Z, Liu E, Feng J, Fu M, Li Y, Wu Q. Effect of Bufei granule on stable chronic obstructive pulmonary disease: a randomized, double blinded, placebo-controlled, and multicenter clinical study. J TRADIT CHIN MED 2014; 34:437-44. [DOI: 10.1016/s0254-6272(15)30043-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Mahgoub L, Aziz K, Davies D, Leonard N. Miller-dieker syndrome associated with congenital lobar emphysema. AJP Rep 2014; 4:13-6. [PMID: 25032053 PMCID: PMC4078132 DOI: 10.1055/s-0033-1364192] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2013] [Accepted: 11/27/2013] [Indexed: 12/30/2022] Open
Abstract
Miller-Dieker syndrome (MDS) is a rare genetic syndrome associated with lissencephaly, developmental delay, and high mortality. We describe a patient who was diagnosed postnatally with both MDS and congenital lobar emphysema. We believe that this is the first reported case of the two conditions presenting in the same patient.
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Affiliation(s)
- Linda Mahgoub
- Department of Pediatrics, The Stollery Children's Hospital, Edmonton, Alberta, Canada
| | - Khalid Aziz
- Department of Pediatrics, University of Alberta, NICU Royal Alexandra Hospital, Kingsway, Edmonton, Alberta, Canada
| | - Dawn Davies
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | - Norma Leonard
- Department of Medical Genetics, University of Alberta Campus, Edmonton, Alberta, Canada
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7
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Arja C, Ravuri RR, Pulamaghatta VN, Surapaneni KM, Raya P, Adimoolam C, Kanala KR. Genetic determinants of chronic obstructive pulmonary disease in South Indian male smokers. PLoS One 2014; 9:e89957. [PMID: 24587150 PMCID: PMC3933698 DOI: 10.1371/journal.pone.0089957] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 01/25/2014] [Indexed: 11/18/2022] Open
Abstract
The development of chronic obstructive pulmonary disease, upon exposure to tobacco smoke, is the cumulative effect of defects in several genes. With the aim of understanding the genetic structure that is characteristic of our patient population, we selected forty two single nucleotide polymorphisms of twenty genes based on previous studies and genotyped a total of 382 samples, which included 236 patients and 146 controls using Sequenom MassARRAY system. Allele frequencies of rs2276109 (MMP12) and rs1800925 (IL13) differed significantly between patients and controls (p = 0.013 and 0.044 respectively). Genotype analysis showed association of rs2276109 (MMP12) under additive and dominant models (p = 0.017, p = 0.012 respectively), rs1800925 (IL13) under additive model (p = 0.047) and under recessive model, rs1695 (GSTP1; p = 0.034), rs729631, rs975278, rs7583463 (SERPINE2; p = 0.024, 0.024 and 0.012 respectively), rs2568494, rs10851906 (IREB2; p = 0.026 and 0.041 respectively) and rs7671167 (FAM13A; p = 0.029). The minor alleles of rs1695 (G), rs7671167 (T), rs729631 (G), rs975278 (A) and rs7583463 (A) showed significant negative association whereas those of rs2276109 (G), rs2568494 (A), rs10851906 (G) and rs1800469 (T; TGF-β) showed significant positive association with lung function under different genetic models. Haplotypes carrying A allele of rs2276109, G allele of rs1695 showed negative correlation with lung function. Haplotypes carrying major alleles of rs7671167 (C) of FAM13A and rs729631 (C), rs975278 (G), rs7583463 (C) of SERPINE2 had protective effect on lung function. Haplotypes of IREB2 carrying major alleles of rs2568494 (G), rs2656069 (A), rs10851906 (A), rs965604 (C) and minor alleles of rs1964678 (T), rs12593229 (T) showed negative correlation with lung function. In conclusion, our study replicated the results of most of the previous studies. However, the positive correlation between the minor alleles of rs2568494 (A) and rs10851906 (G) of IREB2 and lung function needs further investigation.
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Affiliation(s)
- Cholendra Arja
- Department Of Anthropology, Division Of Human Genetics, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
| | | | | | - Krishna Mohan Surapaneni
- Department Of Biochemistry, Saveetha Medical College & Hospital, Faculty Of Medicine, Saveetha University, Chennai, Tamil Nadu, India
| | - Premanand Raya
- Premananda Allergy And Chest Hospital, Tirupati, Andhra Pradesh, India
| | | | - Kodanda Reddy Kanala
- Department Of Anthropology, Division Of Human Genetics, Sri Venkateswara University, Tirupati, Andhra Pradesh, India
- * E-mail:
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Abstract
Oxidants play an important role in homeostatic function, but excessive oxidant generation has an adverse effect on health. The manipulation of Reactive Oxygen Species (ROS) can have a beneficial effect on various lung pathologies. However indiscriminate uses of anti-oxidant strategies have not demonstrated any consistent benefit and may be harmful. Here we propose that nuanced strategies are needed to modulate the oxidant system to obtain a beneficial result in the lung diseases such as Acute Lung Injury (ALI) and Chronic Obstructive Pulmonary Disease (COPD). We identify novel areas of lung oxidant responses that may yield fruitful therapies in the future.
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Affiliation(s)
- Praveen Mannam
- Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Anup Srivastava
- Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | | | - Patty J Lee
- Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
| | - Maor Sauler
- Pulmonary, Critical Care and Sleep Medicine, Yale University School of Medicine, New Haven, CT, USA
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Stoll P, Wuertemberger U, Bratke K, Zingler C, Virchow JC, Lommatzsch M. Stage-dependent association of BDNF and TGF-β1 with lung function in stable COPD. Respir Res 2012; 13:116. [PMID: 23245944 PMCID: PMC3561140 DOI: 10.1186/1465-9921-13-116] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Accepted: 12/06/2012] [Indexed: 01/11/2023] Open
Abstract
Background Chronic Obstructive Pulmonary Disease (COPD) is characterised by complex inflammatory, neuronal and fibrotic changes. Brain-derived Neurotrophic Factor (BDNF) is a key regulator of neuronal plasticity, whereas Transforming Growth Factor-β1 (TGF-β1) plays a crucial role in tissue repair and emphysema pathogenesis. Both mediators are stored in platelets and released from platelets in inflammatory conditions and during serum preparation. In patients with asthma, it was previously shown that elevated serum BDNF concentrations correlate with disease severity, whereas TGF-β1 concentrations were normal. Methods In the present study, 63 patients with stable COPD (spirometric GOLD stages 2–4) and 17 age- and comorbidity-matched controls were studied. Lung function, smoking history, medication, platelet concentrations in peripheral blood and serum concentrations of BDNF, TGF-β1 and Serotonin (5-HT) were assessed in all participants. Results Serum levels of both BDNF and TGF-β1 (but not concentrations of platelets in peripheral blood) were significantly elevated in all stages of COPD as compared to controls. Highest BDNF concentrations were found in spirometric GOLD stage 3, whereas highest TGF-β1 serum levels were found in spirometric GOLD stage 4. There were specific, stage-dependent correlations of these mediators with lung function parameters of the patients. Conclusions Taken together, we show that, in contrast to asthma, COPD is characterised by elevated concentrations of both BDNF and TGF-β1 in serum. The stage-dependent association with lung function supports the hypothesis that these platelet mediators may play a role in the pathogenesis of COPD.
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Affiliation(s)
- Paul Stoll
- Department of Pneumology and Critical Care Medicine, University of Rostock, Ernst Heydemann Strasse 6, 18057, Rostock, Germany.
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Gao C, Maeno T, Ota F, Ueno M, Korekane H, Takamatsu S, Shirato K, Matsumoto A, Kobayashi S, Yoshida K, Kitazume S, Ohtsubo K, Betsuyaku T, Taniguchi N. Sensitivity of heterozygous α1,6-fucosyltransferase knock-out mice to cigarette smoke-induced emphysema: implication of aberrant transforming growth factor-β signaling and matrix metalloproteinase gene expression. J Biol Chem 2012; 287:16699-708. [PMID: 22433854 DOI: 10.1074/jbc.m111.315333] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
We previously demonstrated that a deficiency in core fucosylation caused by the genetic disruption of α1,6-fucosyltransferase (Fut8) leads to lethal abnormalities and the development of emphysematous lesions in the lung by attenuation of TGF-β1 receptor signaling. Herein, we investigated the physiological relevance of core fucosylation in the pathogenesis of emphysema using viable heterozygous knock-out mice (Fut8(+/-)) that were exposed to cigarette smoke (CS). The Fut8(+/-) mice exhibited a marked decrease in FUT8 activity, and matrix metalloproteinase (MMP)-9 activities were elevated in the lung at an early stage of exposure. Emphysema developed after a 3-month CS exposure, accompanied by the recruitment of large numbers of macrophages to the lung. CS exposure substantially and persistently elevated the expression level of Smad7, resulting in a significant reduction of Smad2 phosphorylation (which controls MMP-9 expression) in Fut8(+/-) mice and Fut8-deficient embryonic fibroblast cells. These in vivo and in vitro studies show that impaired core fucosylation enhances the susceptibility to CS and constitutes at least part of the disease process of emphysema, in which TGF-β-Smad signaling is impaired and the MMP-mediated destruction of lung parenchyma is up-regulated.
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Affiliation(s)
- Congxiao Gao
- RIKEN Alliance Laboratory, The Institute of Scientific and Industrial Research, Osaka University, Osaka 567-0047, Japan
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Chen CZ, Wang RH, Lee CH, Lin CC, Chang HY, Hsiue TR. Polymorphism of microsomal epoxide hydrolase is associated with chronic obstructive pulmonary disease and bronchodilator response. J Formos Med Assoc 2011; 110:685-9. [DOI: 10.1016/j.jfma.2011.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2009] [Revised: 05/14/2010] [Accepted: 08/03/2010] [Indexed: 10/16/2022] Open
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12
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Penyige A, Poliska S, Csanky E, Scholtz B, Dezso B, Schmelczer I, Kilty I, Takacs L, Nagy L. Analyses of association between PPAR gamma and EPHX1 polymorphisms and susceptibility to COPD in a Hungarian cohort, a case-control study. BMC MEDICAL GENETICS 2010; 11:152. [PMID: 21044285 PMCID: PMC2988760 DOI: 10.1186/1471-2350-11-152] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Accepted: 11/02/2010] [Indexed: 01/26/2023]
Abstract
Background In addition to smoking, genetic predisposition is believed to play a major role in the pathogenesis of chronic obstructive pulmonary disease (COPD). Genetic association studies of new candidate genes in COPD may lead to improved understanding of the pathogenesis of the disease. Methods Two proposed casual single nucleotide polymorphisms (SNP) (rs1051740, rs2234922) in microsomal epoxide hydrolase (EPHX1) and three SNPs (rs1801282, rs1800571, rs3856806) in peroxisome proliferator-activated receptor gamma (PPARG), a new candidate gene, were genotyped in a case-control study (272 COPD patients and 301 controls subjects) in Hungary. Allele frequencies and genotype distributions were compared between the two cohorts and trend test was also used to evaluate association between SNPs and COPD. To estimate the strength of association, odds ratios (OR) (with 95% CI) were calculated and potential confounding variables were tested in logistic regression analysis. Association between haplotypes and COPD outcome was also assessed. Results The distribution of imputed EPHX1 phenotypes was significantly different between the COPD and the control group (P = 0.041), OR for the slow activity phenotype was 1.639 (95% CI = 1.08- 2.49; P = 0.021) in our study. In logistic regression analysis adjusted for both variants, also age and pack-year, the rare allele of His447His of PPARG showed significant association with COPD outcome (OR = 1.853, 95% CI = 1.09-3.14, P = 0.0218). In haplotype analysis the GC haplotype of PPARG (OR = 0.512, 95% CI = 0.27-0.96, P = 0.035) conferred reduced risk for COPD. Conclusions The "slow" activity-associated genotypes of EPHX1 were associated with increased risk of COPD. The minor His447His allele of PPARG significantly increased; and the haplotype containing the minor Pro12Ala and the major His447His polymorphisms of PPARG decreased the risk of COPD.
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Affiliation(s)
- Andras Penyige
- Department of Human Genetics, University of Debrecen, Debrecen, Hungary.
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Alam S, Li Z, Janciauskiene S, Mahadeva R. Oxidation of Z α1-antitrypsin by cigarette smoke induces polymerization: a novel mechanism of early-onset emphysema. Am J Respir Cell Mol Biol 2010; 45:261-9. [PMID: 20971880 DOI: 10.1165/rcmb.2010-0328oc] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The acceleration of chronic obstructive pulmonary disease (COPD) by cigarette smoke (CS) in individuals with severe genetic deficiency of α(1)-antitrypsin (Z-AT [Glu342Lys]) exemplifies the critical importance of gene-environmental interactions to the development of COPD. We investigated the molecular basis for the interaction between Z-AT and CS. Female mice (8-10 wk old) transgenic for normal (M-AT) or Z-AT on CBA background were exposed to four 1R3F cigarettes daily for 5 days. Age and sex matched littermates not exposed to CS were used as controls. Bronchoalveolar lavage fluid and lung homogenates were assessed for inflammatory cells, neutrophil elastase, and AT conformers. Z-AT was purified from plasma, exposed to CS extract, and assessed for the development and temporal relationship between AT conformers. Mice transgenic for Z-AT developed a significant increase in pulmonary polymers after acute CS exposure (P = 0.001). There were also increased neutrophils in CS-Z lungs versus controls (P < 0.001), which were tightly correlated with polymer concentrations (r(2) = 0.93). Oxidation of human plasma Z-AT by CS or N-chlorosuccinimide greatly accelerated polymerization (P = 0.004), which could be abrogated by antioxidants (P = 0.359 versus Z control). Our data show that CS accelerates polymerization of Z-AT by oxidative modification, which, in so doing, further reduces pulmonary defense and increases neutrophil influx into the lungs. These novel findings provide a molecular explanation for the striking observation of premature emphysema in ZZ homozygotes who smoke. Further work is required to assess whether antioxidant therapy may be beneficial in Z-AT-related COPD.
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Affiliation(s)
- Sam Alam
- Department of Medicine, University of Cambridge, Addenbrookes Hospital, UK.
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Shan M, Cheng HF, Song LZ, Roberts L, Green L, Hacken-Bitar J, Huh J, Bakaeen F, Coxson HO, Storness-Bliss C, Ramchandani M, Lee SH, Corry DB, Kheradmand F. Lung myeloid dendritic cells coordinately induce TH1 and TH17 responses in human emphysema. Sci Transl Med 2010; 1:4ra10. [PMID: 20368170 DOI: 10.1126/scitranlsmed.3000154] [Citation(s) in RCA: 111] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Exposure to tobacco smoke activates innate and adaptive immune responses that in long-term smokers have been linked to diseases of the lungs, cardiovascular system, joints, and other organs. The destruction of lung tissue that underlies smoking-induced emphysema has been associated with T helper 1 cells that recognize the matrix protein elastin. Factors that result in the development of such autoreactive T cells in smokers remain unknown but are crucial for further understanding the pathogenesis of systemic inflammatory diseases in smokers. Here, we show that lung myeloid dendritic cells were sufficient to induce T helper 1 and T helper 17 responses in CD4 T cells. T helper 1 and 17 cells are invariably present in lungs from patients with emphysema but not in lungs from normal individuals. Interleukin-17A, a canonical T helper 17 cytokine, enhanced secretion of CCL20, a chemoattractant for dendritic cells, and matrix metalloproteinase 12, a potent elastolytic proteinase, from lung macrophages. Thus, although diverse lung factors potentially contribute to T helper effector differentiation in vivo, lung myeloid dendritic cells direct the generation of pathogenic T cells and support a feedback mechanism that sustains both inflammatory cell recruitment and lung destruction. This mechanism may underlie disease in other elastin-rich organs and tissues.
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Affiliation(s)
- Ming Shan
- Department of Medicine, Section of Pulmonary and Critical Care, Baylor College of Medicine, Houston, TX 77030, USA
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15
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Somatic DNA alterations in lung epithelial barrier cells in COPD patients. Pulm Pharmacol Ther 2010; 23:208-14. [DOI: 10.1016/j.pupt.2009.12.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 10/22/2009] [Accepted: 12/05/2009] [Indexed: 11/21/2022]
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16
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York TP, van den Oord EJCG, Langston TB, Edmiston JS, McKinney W, Webb BT, Murrelle EL, Zedler BK, Flora JW. High-resolution mass spectrometry proteomics for the identification of candidate plasma protein biomarkers for chronic obstructive pulmonary disease. Biomarkers 2010; 15:367-77. [DOI: 10.3109/13547501003789901] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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17
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Comandini A, Rogliani P, Nunziata A, Cazzola M, Curradi G, Saltini C. Biomarkers of lung damage associated with tobacco smoke in induced sputum. Respir Med 2009; 103:1592-613. [DOI: 10.1016/j.rmed.2009.06.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2008] [Revised: 05/23/2009] [Accepted: 06/01/2009] [Indexed: 11/25/2022]
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18
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Abstract
Tobacco smoking is the dominant risk factor for chronic obstructive pulmonary disease (COPD), but viral and bacterial infections are the major causes of exacerbations in later stages of disease. Reactive oxygen species (ROS), pathogen-associated molecular patterns (PAMPs), and damage-associated molecular patterns (DAMPs) activate families of pattern recognition receptors (PRRs) that include the toll-like receptors (TLRs). This understanding has led to the hypothesis that COPD is an archetypal disease of innate immunity. COPD is characterised by abnormal response to injury, with altered barrier function of the respiratory tract, an acute phase reaction, and excessive activation of macrophages, neutrophils, and fibroblasts in the lung. The activated non-specific immune system then mediates the processes of inflammation and repair, fibrosis, and proteolysis. COPD is also associated with corticosteroid resistance, abnormal macrophage and T-cell populations in the airway, autoinflammation and autoimmunity, aberrant fibrosis, accelerated ageing, systemic and concomitant disease, and defective regeneration. Such concepts have been used to generate a range of molecular targets, and clinical trials are taking place to identify effective drugs for the prevention and treatment of COPD exacerbations.
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Affiliation(s)
- Trevor T Hansel
- National Heart and Lung Institute, Imperial College, London, UK.
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19
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Bossé Y. Genetics of chronic obstructive pulmonary disease: a succinct review, future avenues and prospective clinical applications. Pharmacogenomics 2009; 10:655-67. [PMID: 19374520 DOI: 10.2217/pgs.09.10] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is influenced by genetic and environmental factors. A large number of candidate gene-association studies and genome-wide linkage scans have been conducted to elucidate the genetic architecture underlying this disease. The compilation of these studies clearly revealed the complex genetic nature of COPD. Multiple genes acting on specific environmental backgrounds are likely to be the tenet of this multifactorial disorder. Encouragingly, reproducible susceptibility genes, such as SERPINE2, were recently identified. Advances in genomic research offer unprecedented capabilities to interrogate the human genome and are likely to accelerate the discovery of new genes. A comprehensive catalogue of genes implicated in the pathogenesis of COPD has great potential to lead to the development of new therapies and explain interindividual response to treatment.
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Affiliation(s)
- Yohan Bossé
- Institut universitaire de cardiologie et de pneumologie de Québec, Pavillon Margeritte-d'Youville, Y4190, 2725, Chemin Sainte-Foy, Quebec City, Quebec, G1V 4G5, Canada.
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Kolb MRJ, Yang I. Respirology year-in-review 2008: basic science. Respirology 2009; 14:318-26. [PMID: 19353767 DOI: 10.1111/j.1440-1843.2009.01491.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Affiliation(s)
- Martin R J Kolb
- Department of Medicine, McMaster University, Hamilton, Ontario, Canada.
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21
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22
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[Pathogenesis of chronic obstructive pulmonary disease]. Presse Med 2009; 38:406-12. [PMID: 19135847 DOI: 10.1016/j.lpm.2008.12.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2008] [Accepted: 12/15/2008] [Indexed: 11/21/2022] Open
Abstract
Chronic obstructive pulmonary disease (COPD) is a respiratory disease characterized by permanent and progressive airway obstruction. Cigarette smoking is the main cause responsible for COPD although only 15 to 25 % of smokers develop COPD. Mechanisms underlying COPD pathogenesis are not fully understood. Structural abnormalities in small airways (bronchioles < 2mm in diameter) are the main determinants of airway obstruction; obstruction of these bronchioles is related to increase in airway wall thickness (associated with peribronchiolar fibrosis) and to plugging by mucus exudates. Alveolar wall destruction (emphysema) also contributes to airway obstruction and to gas exchange abnormalities. Current knowledge related to molecular and cellular mechanisms responsible for these structural modifications are reviewed.
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Abstract
Chronic obstructive pulmonary disease (COPD) is characterized physiologically by expiratory flow limitation and pathologically by alveolar destruction and enlargement and small and large airway inflammation and remodeling. An imbalance between protease and antiprotease activity in the lung is proposed as the major mechanism resulting in emphysema. The imbalance is mostly due to an increase in the numbers of alveolar macrophages and neutrophils. Emphysema can also develop from increased alveolar wall cell death and/or failure in alveolar wall maintenance. Chronic inflammation and increased oxidative stress contribute to increased destruction and/or impaired lung maintenance and repair. Genetic factors may play an important role in disease susceptibility because only a minority of smokers develops emphysema. Recent literature implicates surfactant instability, malnutrition, and alveolar cell apoptosis as possible etiologies. Identification of cellular and molecular mechanisms of COPD pathogenesis is an area of active, ongoing research that may help to determine therapeutic targets for emphysema.
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