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Kilin V, Mas C, Constant S, Wolf JP, Bonacina L. Health state dependent multiphoton induced autofluorescence in human 3D in vitro lung cancer model. Sci Rep 2017; 7:16233. [PMID: 29176571 PMCID: PMC5701152 DOI: 10.1038/s41598-017-16628-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 11/15/2017] [Indexed: 12/18/2022] Open
Abstract
Lung diseases pose the highest risk of death and lung cancer is a top killer among cancers with a mortality rate up to 70% within 1 year after diagnosis. Such a fast escalation of this cancer development makes early diagnosis and treatment a highly challenging task, and currently there are no effective tools to diagnose the disease at an early stage. The ability to discriminate between healthy and tumorous tissue has made autofluorescence bronchoscopy a promising tool for detection of lung cancer; however, specificity of this method remains insufficiently low. Here, we perform autofluorescence imaging of human lung cancer invading a human functional airway using an in vitro model of Non Small Cell Lung Cancer which combines a reconstituted human airway epithelium, human lung fibroblasts and lung adenocarcinoma cell lines, OncoCilAir™. By using two-photon laser induced autofluorescence microscopy combined with spectrally resolved imaging, we found that OncoCilAir™ provides tissue's health dependent autofluorescence similar as observed in lung tissue in patients. Moreover, we found spectral and intensity heterogeneity of autofluorescence at the edges of tumors. This metabolic related heterogeneity demonstrates ability of tumor to influence its microenvironment. Together, our result shows that OncoCilAir™ is a promising model for lung cancer research.
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Affiliation(s)
- Vasyl Kilin
- GAP, University of Geneva, 22 chemin de Pinchat, CH-1211, Geneva 4, Switzerland.
| | - Christophe Mas
- OncoTheis Sàrl, 18 chemin des aulx, CH-1228, Plan-les-Ouates, Geneva, Switzerland
| | - Samuel Constant
- OncoTheis Sàrl, 18 chemin des aulx, CH-1228, Plan-les-Ouates, Geneva, Switzerland
- Epithelix SAS, 219 Rue Laszlo Biro, 74160, Archamps, France
| | - Jean-Pierre Wolf
- GAP, University of Geneva, 22 chemin de Pinchat, CH-1211, Geneva 4, Switzerland
| | - Luigi Bonacina
- GAP, University of Geneva, 22 chemin de Pinchat, CH-1211, Geneva 4, Switzerland
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Blandin Knight S, Crosbie PA, Balata H, Chudziak J, Hussell T, Dive C. Progress and prospects of early detection in lung cancer. Open Biol 2017; 7:170070. [PMID: 28878044 PMCID: PMC5627048 DOI: 10.1098/rsob.170070] [Citation(s) in RCA: 473] [Impact Index Per Article: 67.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 07/27/2017] [Indexed: 12/14/2022] Open
Abstract
Lung cancer is the leading cause of cancer-related death in the world. It is broadly divided into small cell (SCLC, approx. 15% cases) and non-small cell lung cancer (NSCLC, approx. 85% cases). The main histological subtypes of NSCLC are adenocarcinoma and squamous cell carcinoma, with the presence of specific DNA mutations allowing further molecular stratification. If identified at an early stage, surgical resection of NSCLC offers a favourable prognosis, with published case series reporting 5-year survival rates of up to 70% for small, localized tumours (stage I). However, most patients (approx. 75%) have advanced disease at the time of diagnosis (stage III/IV) and despite significant developments in the oncological management of late stage lung cancer over recent years, survival remains poor. In 2014, the UK Office for National Statistics reported that patients diagnosed with distant metastatic disease (stage IV) had a 1-year survival rate of just 15-19% compared with 81-85% for stage I.
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MESH Headings
- Adenocarcinoma/diagnostic imaging
- Adenocarcinoma/genetics
- Adenocarcinoma/mortality
- Adenocarcinoma/surgery
- Adenocarcinoma of Lung
- Biomarkers, Tumor/blood
- Biomarkers, Tumor/genetics
- Bronchoscopy/methods
- Carcinoma, Non-Small-Cell Lung/diagnostic imaging
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/mortality
- Carcinoma, Non-Small-Cell Lung/surgery
- Carcinoma, Squamous Cell/diagnostic imaging
- Carcinoma, Squamous Cell/genetics
- Carcinoma, Squamous Cell/mortality
- Carcinoma, Squamous Cell/surgery
- Circulating Tumor DNA/blood
- Circulating Tumor DNA/genetics
- Early Detection of Cancer/methods
- Humans
- Liquid Biopsy/methods
- Lung Neoplasms/diagnostic imaging
- Lung Neoplasms/genetics
- Lung Neoplasms/mortality
- Lung Neoplasms/surgery
- Neoplasm Staging
- Neoplastic Cells, Circulating/metabolism
- Neoplastic Cells, Circulating/pathology
- Prognosis
- Radiography
- Small Cell Lung Carcinoma/diagnostic imaging
- Small Cell Lung Carcinoma/genetics
- Small Cell Lung Carcinoma/mortality
- Small Cell Lung Carcinoma/surgery
- Survival Analysis
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Affiliation(s)
- Sean Blandin Knight
- North West Lung Centre, University Hospital South Manchester, Manchester, UK
| | - Phil A Crosbie
- North West Lung Centre, University Hospital South Manchester, Manchester, UK
- Cancer Research UK Lung Cancer Centre of Excellence at Manchester and University College London, UK
| | - Haval Balata
- North West Lung Centre, University Hospital South Manchester, Manchester, UK
| | - Jakub Chudziak
- Clinical and Experimental Pharmacology Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester, UK
| | - Tracy Hussell
- Manchester Collaborative Centre for Inflammation Research, University of Manchester, Manchester, UK
| | - Caroline Dive
- Cancer Research UK Lung Cancer Centre of Excellence at Manchester and University College London, UK
- Clinical and Experimental Pharmacology Group, Cancer Research UK Manchester Institute, University of Manchester, Manchester, UK
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3
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Zhu J, Li W, Zhou J, Chen Y, Zhao C, Zhang T, Peng W, Wang X. The diagnostic value of narrow-band imaging for early and invasive lung cancer: a meta-analysis. Clinics (Sao Paulo) 2017; 72:438-448. [PMID: 28793005 PMCID: PMC5525163 DOI: 10.6061/clinics/2017(07)09] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 02/14/2017] [Indexed: 01/15/2023] Open
Abstract
This study aimed to compare the ability of narrow-band imaging to detect early and invasive lung cancer with that of conventional pathological analysis and white-light bronchoscopy. We searched the PubMed, EMBASE, Sinomed, and China National Knowledge Infrastructure databases for relevant studies. Meta-disc software was used to perform data analysis, meta-regression analysis, sensitivity analysis, and heterogeneity testing, and STATA software was used to determine if publication bias was present, as well as to calculate the relative risks for the sensitivity and specificity of narrow-band imaging vs those of white-light bronchoscopy for the detection of early and invasive lung cancer. A random-effects model was used to assess the diagnostic efficacy of the above modalities in cases in which a high degree of between-study heterogeneity was noted with respect to their diagnostic efficacies. The database search identified six studies including 578 patients. The pooled sensitivity and specificity of narrow-band imaging were 86% (95% confidence interval: 83-88%) and 81% (95% confidence interval: 77-84%), respectively, and the pooled sensitivity and specificity of white-light bronchoscopy were 70% (95% confidence interval: 66-74%) and 66% (95% confidence interval: 62-70%), respectively. The pooled relative risks for the sensitivity and specificity of narrow-band imaging vs the sensitivity and specificity of white-light bronchoscopy for the detection of early and invasive lung cancer were 1.33 (95% confidence interval: 1.07-1.67) and 1.09 (95% confidence interval: 0.84-1.42), respectively, and sensitivity analysis showed that narrow-band imaging exhibited good diagnostic efficacy with respect to detecting early and invasive lung cancer and that the results of the study were stable. Narrow-band imaging was superior to white light bronchoscopy with respect to detecting early and invasive lung cancer; however, the specificities of the two modalities did not differ significantly.
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Affiliation(s)
- Juanjuan Zhu
- Department of Respiratory Disease, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
- Provincial Key Laboratory of Respiratory Disease in Anhui, Bengbu 233004, China
- *Corresponding author. E-mail:
| | - Wei Li
- Department of Respiratory Disease, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
- Provincial Key Laboratory of Respiratory Disease in Anhui, Bengbu 233004, China
- *Corresponding author. E-mail:
| | - Jihong Zhou
- Department of Biochemistry and Molecular Biology, Bengbu Medical College, Bengbu 233004, China
| | - Yuqing Chen
- Department of Respiratory Disease, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
- Provincial Key Laboratory of Respiratory Disease in Anhui, Bengbu 233004, China
| | - Chenling Zhao
- Department of Respiratory Disease, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
- Provincial Key Laboratory of Respiratory Disease in Anhui, Bengbu 233004, China
| | - Ting Zhang
- Department of Respiratory Disease, No.2 People’s Hospital of Fuyang City, Fuyang 236015, China
| | - Wenjia Peng
- Department of Epidemiology and Health Statistics, Bengbu Medical College, Bengbu 233030, China
| | - Xiaojing Wang
- Department of Respiratory Disease, the First Affiliated Hospital of Bengbu Medical College, Bengbu 233004, China
- Provincial Key Laboratory of Respiratory Disease in Anhui, Bengbu 233004, China
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Andolfi M, Potenza R, Capozzi R, Liparulo V, Puma F, Yasufuku K. The role of bronchoscopy in the diagnosis of early lung cancer: a review. J Thorac Dis 2016; 8:3329-3337. [PMID: 28066614 PMCID: PMC5179455 DOI: 10.21037/jtd.2016.11.81] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 10/20/2016] [Indexed: 12/25/2022]
Abstract
Lung cancer is the leading cause of cancer-related deaths worldwide with an overall 5-year survival rate of 17% after diagnoses. Indeed many patients tend to have a very poor prognosis, due to being diagnosed at an advanced stage. Conversely patients who are diagnosed at an early stage have a 5-year survival >70%, indicating that early detection of lung cancer is crucial to improve survival. Although flexible bronchoscopy is a relatively non-invasive procedure for patients suspected of having lung cancer, only 29% of carcinoma in situ (CIS) and 69% of microinvasive tumors were detectable using white light bronchoscopy (WLB) alone. As a result, in the past two decades, new bronchoscopic techniques have been developed to increase the yield and diagnostic accuracy, such as autofluorescence bronchoscopy (AFB), narrow band imaging (NBI) and high magnification bronchovideoscopy (HMB). However, due to the low specificity and the limitation to detect only proximal bronchial tree, new probe-based technologies have been introduced: radial endobronchial ultrasound (R-EBUS), optical coherence tomography (OCT), confocal laser endomicroscopy (CLE) and laser Raman spectroscopy (LRS). To date, although tissue biopsy remains the gold standard for diagnosing malignant/premalignant airway disease and some techniques are still investigational, bronchoscopic technologies can be considered the safest and most accurate tools to evaluate both central and distal airway mucosa.
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Affiliation(s)
- Marco Andolfi
- Division of Thoracic Surgery, S. Maria della Misericordia Hospital, University of Perugia Medical School, Perugia, Italy
| | - Rossella Potenza
- Division of Thoracic Surgery, S. Maria della Misericordia Hospital, University of Perugia Medical School, Perugia, Italy
| | - Rosanna Capozzi
- Division of Thoracic Surgery, S. Maria della Misericordia Hospital, University of Perugia Medical School, Perugia, Italy
| | - Valeria Liparulo
- Division of Thoracic Surgery, S. Maria della Misericordia Hospital, University of Perugia Medical School, Perugia, Italy
| | - Francesco Puma
- Division of Thoracic Surgery, S. Maria della Misericordia Hospital, University of Perugia Medical School, Perugia, Italy
| | - Kazuhiro Yasufuku
- Division of Thoracic Surgery, Toronto General Hospital, University Health Network, Toronto, ON, Canada
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Zhang J, Wu J, Yang Y, Liao H, Xu Z, Hamblin LT, Jiang L, Depypere L, Ang KL, He J, Liang Z, Huang J, Li J, He Q, Liang W, He J. White light, autofluorescence and narrow-band imaging bronchoscopy for diagnosing airway pre-cancerous and early cancer lesions: a systematic review and meta-analysis. J Thorac Dis 2016; 8:3205-3216. [PMID: 28066600 DOI: 10.21037/jtd.2016.11.61] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND We aimed to summarize the diagnostic accuracy of white light bronchoscopy (WLB) and advanced techniques for airway pre-cancerous lesions and early cancer, such as autofluorescence bronchoscopy (AFB), AFB combined with WLB (AFB + WLB) and narrow-band imaging (NBI) bronchoscopy. METHODS We searched for eligible studies in seven electronic databases from their date of inception to Mar 20, 2015. In eligible studies, detected lesions should be confirmed by histopathology. We extracted and calculated the 2×2 data based on the pathological criteria of lung tumor, including high-grade lesions from moderate dysplasia (MOD) to invasive carcinoma (INV). Random-effect model was used to pool sensitivity, specificity, diagnostic odds ratio (DOR) and the area under the receiver-operating characteristic curve (AUC). RESULTS In 53 eligible studies (39 WLB, 39 AFB, 17 AFB + WLB, 6 NBI), diagnostic performance for high-grade lesions was analyzed based on twelve studies (10 WLB, 7 AFB, 7 AFB + WLB, 1 NBI), involving with totally 2,880 patients and 8,830 biopsy specimens. The sensitivity, specificity, DOR and AUC of WLB were 51% (95% CI, 34-68%), 86% (95% CI, 73-84%), 6 (95% CI, 3-13) and 77% (95% CI, 73-81%). Those of AFB and AFB + WLB were 93% (95% CI, 77-98%) and 86% (95% CI, 75-97%), 52% (95% CI, 37-67%) and 71% (95% CI, 56-87%), 15 (95% CI, 4-57) and 16 (95% CI, 6-41), and 76% (95% CI, 72-79%) and 82% (95% CI, 78-85%), respectively. NBI presented 100% sensitivity and 43% specificity. CONCLUSIONS With higher sensitivity, advanced bronchoscopy could be valuable to avoid missed diagnosis. Combining strategy of AFB and WLB may contribute preferable diagnosis rather than their alone use for high-grade lesions. Studies of NBI warrants further investigation for precancerous lesions.
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Affiliation(s)
- Jianrong Zhang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China;; Graduate School, Guangzhou Medical University, Guangzhou 510120, China
| | - Jieyu Wu
- Graduate School, Guangzhou Medical University, Guangzhou 510120, China;; Department of Pathology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Yujing Yang
- Department of Clinical Laboratory, Guangdong Academy of Medical Sciences and General Hospital, Guangzhou 510120, China
| | - Hua Liao
- Department of Respiratory Medicine, the Fifth Affiliated Hospital of Southern Medical University, Guangzhou 510120, China
| | - Zhiheng Xu
- China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China;; Graduate School, Guangzhou Medical University, Guangzhou 510120, China;; Department of Critical Care Medicine, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Lindsey Tristine Hamblin
- Institute of International Education, Guangdong University of Foreign Studies, Guangzhou 510120, China
| | - Long Jiang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China;; Graduate School, Guangzhou Medical University, Guangzhou 510120, China
| | - Lieven Depypere
- Department of Thoracic Surgery, University Hospitals Leuven, Leuven, Belgium
| | - Keng Leong Ang
- Department of Thoracic Surgery, Glenfield Hospital, Leicester, LE3 9QP, UK
| | - Jiaxi He
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China;; Graduate School, Guangzhou Medical University, Guangzhou 510120, China
| | - Ziyan Liang
- Department of Neonatology, the Third Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China
| | - Jun Huang
- Medical Equipment Section, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510120, China
| | - Jingpei Li
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China
| | - Qihua He
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China;; Graduate School, Guangzhou Medical University, Guangzhou 510120, China
| | - Wenhua Liang
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China
| | - Jianxing He
- Department of Thoracic Surgery and Oncology, the First Affiliated Hospital of Guangzhou Medical University, Guangzhou 510120, China;; China State Key Laboratory of Respiratory Disease, Guangzhou Institute of Respiratory Disease, Guangzhou 510120, China;; National Clinical Research Centre of Respiratory Disease, Guangzhou 510120, China
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Rong B, Cai X, Liu H, Fu T, Gao W, Zhao C, Lin Y. Increased level of Hsp90-beta in bronchoalveolar lavage fluid correlates with lymphatic invasion and advanced stage of lung cancer patients. Am J Transl Res 2016; 8:4147-4159. [PMID: 27829999 PMCID: PMC5095308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Accepted: 05/20/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND The purpose of this work is to explore the correlation between Hsp90-beta level in broncheoalveolar lavage fluid (BALF) and lung cancer. METHODS Hsp90-beta level was measured by immunohistochemistry and enzyme-linked immunosorbent assay. Sensitivity and specificity of Hsp90-beta were calculated by receiver operator characteristic curve. RESULTS BALF in patients with lung cancer showed a higher expression of Hsp90-beta than those with benign lung disease (P<0.05). Elevated Hsp90-beta was closely related to lymphatic invasion and advanced stage of patients with lung cancer (P<0.05). The sensitivity of BALF Hsp90-beta for discerning lung cancer from patients with benign disease was 82.56% and specificity was 97.56%. CONCLUSION Increased BALF Hsp90-beta correlates with lymphatic invasion and advanced stage of patients with lung cancer, suggesting it could be a diagnostic indicator for patients with lung cancer.
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Affiliation(s)
- Biaoxue Rong
- Department of Respiratory Medicine, First Affiliated Hospital, Xi’an Medical UniversityXi’an, China
| | - Xiguang Cai
- Department of Respiratory Medicine, Gansu Provincial HospitalLanzhou, China
| | - Hua Liu
- Department of Respiratory Medicine, Gansu Provincial HospitalLanzhou, China
| | - Tian Fu
- Department of Respiratory Medicine, Affiliated Hospital of Jining Medical UniversityJining, China
| | - Wenlong Gao
- Department of Statistics and Epidemiology, Medical College, Lanzhou UniversityLanzhou, China
| | - Chongchong Zhao
- Department of Cancer Care, Lanzhou University Second HospitalLanzhou, China
| | - Yurong Lin
- Department of Respiratory Medicine, Xi’an North HospitalXian, China
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Ihara H, Tajima K, Yoshikawa H, Tajima M, Harada N, Takahashi F, Uekusa T, Nagaoka T, Takahashi K. Autofluorescence imaging bronchoscopy as a novel approach to the management of tracheobronchopathia osteochondroplastica: a case report. J Thorac Dis 2016; 8:E1195-E1198. [PMID: 27867586 DOI: 10.21037/jtd.2016.10.48] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Tracheobronchopathia osteochondroplastica (TO) is not only rare but also presents highly varied and unpredictable clinical manifestations. Consequently, the management and treatment strategies remain unclear. An accurate evaluation tool is important for the management of individual patients in the absence of standard guidelines. Although bronchoscopy is the gold standard for diagnosis, it cannot satisfactorily detect the treatment response and disease progression because subtle mucosal changes can go undetected. Therefore, improved techniques that can detect subtle mucosal changes associated with TO are desirable. Autofluorescence imaging bronchoscopy (AFI) is a recently introduced advanced endoscopic technology that can detect subtle mucosal changes with the aid of different colors. Here we report the first case, to the best of our knowledge, involving a 42-year-old man with TO in whom tracheal involvement was evaluated by AFI and detected as the appearance of a magenta color.
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Affiliation(s)
- Hiroaki Ihara
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Ken Tajima
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Hitomi Yoshikawa
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Manabu Tajima
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Norihiro Harada
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Fumiyuki Takahashi
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Toshimasa Uekusa
- Department of Pathology, Labor Health and Welfare Organization Kanto Rosai Hospital, Kawasaki, Japan
| | - Tetsutaro Nagaoka
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
| | - Kazuhisa Takahashi
- Department of Respiratory Medicine, Juntendo University, Faculty of Medicine, Tokyo, Japan;; Research Institute for Diseases of Old Ages, Juntendo University, Faculty of Medicine, Tokyo, Japan
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