1
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Kameyama N, Sato T, Arai D, Fujisawa D, Takeuchi M, Nakachi I, Kawada I, Yasuda H, Ikemura S, Terai H, Nukaga S, Nakano Y, Hirano T, Minematsu N, Asakura T, Kamatani T, Tanaka K, Suzuki S, Miyawaki M, Naoki K, Fukunaga K, Soejima K. Most Important Things and Associated Factors With Prioritizing Daily Life in Patients With Advanced Lung Cancer. JCO Oncol Pract 2022; 18:e1977-e1986. [PMID: 36346964 DOI: 10.1200/op.22.00124] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Patients' values and priorities in their lives should be appreciated from an early phase of incurable diseases such as advanced cancer. However, studies examining these characteristics have been lacking. This study attempted to determine what patients with advanced lung cancer valued most, once they had been diagnosed, and any associated factors. METHODS Patients with newly diagnosed advanced lung cancer (N = 248) were enrolled in a questionnaire survey conducted at 16 hospitals in Japan. Their priorities were assessed using a free-text response to the question what is the most important thing to you now? at the time of diagnosis and 3 months after diagnosis. The free-text responses were classified into 10 categories for quantification. The clinical characteristics associated with the category describing daily life were further examined. RESULTS Free-text comments were obtained from 103 (44.0%) and 66 (42.6%) patients at the time of diagnosis and at 3 months, respectively. The most frequent categories were family (at diagnosis: 50.5%; at 3 months: 50.0%) and daily life (at diagnosis: 33.0%; at 3 months: 36.4%), followed by health (at diagnosis: 32.0%; at 3 months: 27.3%) at both time points. The patients mentioning daily life, the issues related to how to spend daily life, showed significantly higher total scores and functional well-being subscale scores on the Functional Assessment of Cancer Therapy-Lung scale at both time points and lower depression scores at diagnosis and lower anxiety scores at 3 months on the Hospital Anxiety and Depression Scale. CONCLUSION Family and daily life were highly valued by patients with advanced lung cancer at diagnosis. A better quality of life and better mood were associated with mentioning daily life, which should be taken into account in care planning to maintain patients' involvement in daily life even with incurable diseases.
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Affiliation(s)
- Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Division of Pulmonary Medicine, Kawasaki Municipal Ida Hospital, Kawasaki, Japan
| | - Takashi Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Respiratory Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Daisuke Arai
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Pulmonary Division, Internal Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Daisuke Fujisawa
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.,Division of Patient Safety, Keio University School of Medicine, Tokyo, Japan
| | - Mari Takeuchi
- Department of Neuropsychiatry, Keio University School of Medicine, Tokyo, Japan.,Palliative Care Center, Keio University Hospital, Tokyo, Japan
| | - Ichiro Nakachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Pulmonary Division, Internal Medicine, Saiseikai Utsunomiya Hospital, Utsunomiya, Japan
| | - Ichiro Kawada
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Yasuda
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shinnosuke Ikemura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hideki Terai
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shigenari Nukaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Yasushi Nakano
- Division of Pulmonary Medicine, Kawasaki Municipal Ida Hospital, Kawasaki, Japan
| | - Toshiyuki Hirano
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Internal Medicine, Sano-Kosei General Hospital, Sano, Japan
| | - Naoto Minematsu
- Department of Internal Medicine, Hino Municipal Hospital, Tokyo, Japan
| | - Takanori Asakura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Pulmonary Medicine, Saitama City Hospital, Saitama, Japan
| | - Takashi Kamatani
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan.,Department of Medical Science Mathematics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kyuto Tanaka
- Division of Pulmonary Medicine, Kawasaki Municipal Kawasaki Hospital, Kawasaki, Japan.,Department of Respiratory Medicine, Nippon Kokan Hospital, Kawasaki, Japan
| | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Pulmonary Medicine, Saitama City Hospital, Saitama, Japan
| | - Masayoshi Miyawaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Department of Pulmonary Medicine, Eiju General Hospital, Tokyo, Japan
| | - Katsuhiko Naoki
- Department of Respiratory Medicine, Kitasato University School of Medicine, Sagamihara, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kenzo Soejima
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan.,Clinical and Translational Research Center, Keio University Hospital, Tokyo, Japan
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2
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Irie H, Ozaki M, Chubachi S, Hegab AE, Tsutsumi A, Kameyama N, Sakurai K, Nakayama S, Kagawa S, Wada S, Ishii M, Betsuyaku T, Fukunaga K. Short-term intermittent cigarette smoke exposure enhances alveolar type 2 cell stemness via fatty acid oxidation. Respir Res 2022; 23:41. [PMID: 35236337 PMCID: PMC8889685 DOI: 10.1186/s12931-022-01948-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 02/07/2022] [Indexed: 11/24/2022] Open
Abstract
Background Cigarette smoke (CS) is associated with chronic obstructive pulmonary disease (COPD) and cancer. However, the underlying pathological mechanisms are not well understood. We recently reported that mice exposed to long-term intermittent CS for 3 months developed more severe emphysema and higher incidence of adenocarcinoma than mice exposed to long-term continuous CS for 3 months and long-term continuous CS exposure activated alveolar stem cell proliferation. However, the influence of variations in the CS exposure pattern in alveolar stem cell in unknown. Here, we exposed mice to 3 weeks of continuous or intermittent CS to identify whether different CS exposure patterns would result in differential effects on stem cells and the mechanisms underlying these potential differences. Methods Female mice expressing GFP in alveolar type 2 (AT2) cells, which are stem cells of the alveolar compartment, were exposed to mainstream CS via nasal inhalation. AT2 cells were collected based on their GFP expression by flow cytometry and co-cultured with fibroblasts in stem cell 3D organoid/colony-forming assays. We compared gene expression profiles of continuous and intermittent CS-exposed AT2 cells using microarray analysis and performed a functional assessment of a differentially expressed gene to confirm its involvement in the process using activator and inhibitor studies. Results AT2 cells sorted from intermittent CS-exposed mice formed significantly more colonies compared to those from continuous CS-exposed mice, and both CS-exposed groups formed significantly more colonies when compared to air-exposed cells. Comparative microarray analysis revealed the upregulation of genes related to fatty acid oxidation (FAO) pathways in AT2 cells from intermittent CS-exposed mice. Treatment of intermittent CS-exposed mice with etomoxir, an inhibitor of the FAO regulator Cpt1a, for 5 weeks resulted in a significant suppression of the efficiency of AT2 cell colony formation. In vitro treatment of naïve AT2 cells with a FAO activator and inhibitor further confirmed the relationship between FAO and AT2 stem cell function. Conclusions Alveolar stem cell function was more strongly activated by intermittent CS exposure than by continuous CS exposure. We provide evidence that AT2 stem cells respond to intermittent CS exposure by activating stem cell proliferation via the activation of FAO. Supplementary Information The online version contains supplementary material available at 10.1186/s12931-022-01948-4.
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Affiliation(s)
- Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Mari Ozaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kaori Sakurai
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shingo Nakayama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shizuko Kagawa
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Sachika Wada
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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3
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Tsutsumi A, Ozaki M, Chubachi S, Irie H, Sato M, Kameyama N, Sasaki M, Ishii M, Hegab AE, Betsuyaku T, Fukunaga K. Exposure to Cigarette Smoke Enhances the Stemness of Alveolar Type 2 Cells. Am J Respir Cell Mol Biol 2020; 63:293-305. [PMID: 32338993 DOI: 10.1165/rcmb.2019-0188oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 04/27/2020] [Indexed: 12/16/2022] Open
Abstract
Chronic exposure to cigarette smoke (CS) causes chronic inflammation, oxidative stress, and apoptosis of epithelial cells, which results in destruction of the lung matrix. However, the mechanism by which the lung fails to repair the CS-induced damage, thereby succumbing to emphysema, remains unclear. Alveolar type 2 (AT2) cells comprise the stem cells of the alveolar compartments and are responsible for repairing and maintaining lung tissues. In this study, we examined the effect of chronic CS on AT2 stem cells. Adult mice expressing GFP in their AT2 cells were exposed to CS for > 3 months. Histological assessment showed that CS not only induced emphysematous changes but also increased the number of AT2 cells compared with that of air-exposed lungs. Assessment of sorted GFP+/AT2 cells via the stem cell three-dimensional organoid/colony-forming assay revealed that the number and size of the colonies formed by the CS-exposed AT2 stem cells were significantly higher than those of air-exposed control AT2 cells. Although CS-exposed lungs had more apoptotic cells, examination of the surviving AT2 stem cells in two-dimensional in vitro culture revealed that they developed a higher ability to resist apoptosis. Microarray analysis of CS-exposed AT2 stem cells revealed the upregulation of genes related to circadian rhythm and inflammatory pathways. In conclusion, we provide evidence that AT2 stem cells respond to chronic CS exposure by activating their stem cell function, thereby proliferating and differentiating faster and becoming more resistant to apoptosis. Disturbances in expression levels of several circadian rhythm-related genes might be involved in these changes.
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Affiliation(s)
- Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mari Ozaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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4
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Kim J, Lee J, Kim H, Kameyama N, Nazarian R, Der E, Cohen S, Putterman C, Krueger J. 158 Single cell analysis of emigrating cells from psoriasis lesion identifies distinct IL-17A and IL-17F producing T-cell populations and other novel disease-associated alterations. J Invest Dermatol 2020. [DOI: 10.1016/j.jid.2020.03.162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Miyata J, Ogawa T, Tagami Y, Sato T, Nagayama M, Hirano T, Kameyama N, Fukunaga K, Kawana A, Inoue T. Serum soluble interleukin-2 receptor level is a predictive marker for EBUS-TBNA-based diagnosis of sarcoidosis. Sarcoidosis Vasc Diffuse Lung Dis 2020; 37:8-16. [PMID: 33093764 PMCID: PMC7569541 DOI: 10.36141/svdld.v37i1.8313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 11/25/2019] [Indexed: 12/19/2022]
Abstract
Background: Endobronchial ultrasound-guided transbronchial needle aspiration (EBUS-TBNA) is a widely available diagnostic tool for suspected stage I/II sarcoidosis. Combination of EBUS-TBNA and transbronchial lung biopsy (TBLB) has been proposed as diagnostic procedure in clinical settings. Objectives: The aim of this study was to assess the diagnostic yield of combined EBUS-TBNA and TBLB and identify the markers correlated with a high diagnostic rate. Methods: We retrospectively analyzed the data of 37 patients with suspected stage I/II sarcoidosis with enlarged hilar or mediastinal lymph nodes on computed tomography (CT) images. These patients had been scheduled to undergo EBUS-TBNA and TBLB. Serum levels of sarcoidosis markers (angiotensin-converting enzyme [ACE], soluble interleukin-2 receptor [sIL-2R], and lysozyme), CT findings, and examination techniques were evaluated as predictive markers for diagnosis. Results: Of the 37 patients, 32 had undergone both EBUS-TBNA and TBLB, while the remaining 5 patients had only undergone EBUS-TBNA. The diagnosis was confirmed by TBLB in 16 of the 32 patients (50.0%), EBUS-TBNA in 31 of the 37 patients (83.8%), and combined TBLB and EBUS-TBNA in all patients (100.0%). The serum level of sIL-2R, but not that of ACE or lysozyme, was correlated with successful diagnosis by EBUS-TBNA. Conclusion: In patients with stage I/II sarcoidosis, the serum level of sIL-2R is a promising and useful marker for predicting the diagnosis by EBUS-TBNA and reducing the burden of additional TBLB and its possible complications. (Sarcoidosis Vasc Diffuse Lung Dis 2020; 37 (1): 8-16)
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Affiliation(s)
- Jun Miyata
- Division of Infectious Diseases and Respiratory Medicine, Department of Internal Medicine, National Defense Medical College, Saitama, Japan.,Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
| | - Takunori Ogawa
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan.,Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yoichi Tagami
- Division of Infectious Diseases and Respiratory Medicine, Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Takashi Sato
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
| | - Mikie Nagayama
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
| | - Toshiyuki Hirano
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
| | - Naofumi Kameyama
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Akihiko Kawana
- Division of Infectious Diseases and Respiratory Medicine, Department of Internal Medicine, National Defense Medical College, Saitama, Japan
| | - Takashi Inoue
- Department of Pulmonary Medicine, Sano Kosei General Hospital, Sano, Tochigi, Japan
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6
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Hegab AE, Ozaki M, Kameyama N, Gao J, Kagawa S, Yasuda H, Soejima K, Yin Y, Guzy RD, Nakamura Y, Ornitz DM, Betsuyaku T. Effect of FGF/FGFR pathway blocking on lung adenocarcinoma and its cancer-associated fibroblasts. J Pathol 2019; 249:193-205. [PMID: 31090071 DOI: 10.1002/path.5290] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 05/09/2019] [Accepted: 05/10/2019] [Indexed: 01/17/2023]
Abstract
Cancer-associated fibroblasts (CAFs) are known to promote tumourigenesis through various mechanisms. Fibroblast growth factor (FGF)/FGF receptor (FGFR)-dependent lung cancers have been described. We have developed a mouse model of lung adenocarcinoma that was constructed through the induction of Fgf9 overexpression in type 2 alveolar cells. The expression of Fgf9 in adult lungs resulted in the rapid development of multiple adenocarcinoma-like tumour nodules. Here, we have characterised the contribution of CAFs and the Fgf/Fgfr signalling pathway in maintaining the lung tumours initiated by Fgf9 overexpression. We found that CAF-secreted Fgf2 contributes to tumour cell growth. CAFs overexpressed Tgfb, Mmp7, Fgf9, and Fgf2; synthesised more collagen, and secreted inflammatory cell-recruiting cytokines. CAFs also enhanced the conversion of tumour-associated macrophages (TAMs) to the tumour-supportive M2 phenotype but did not influence angiogenesis. In vivo inhibition of Fgfrs during early lung tumour development resulted in significantly smaller and fewer tumour nodules, whereas inhibition in established lung tumours caused a significant reduction in tumour size and number. Fgfr inhibition also influenced tumour stromal cells, as it significantly abolished TAM recruitment and reduced tumour vascularity. However, the withdrawal of the inhibitor caused a significant recurrence/regrowth of Fgf/Fgfr-independent lung tumours. These recurrent tumours did not possess a higher proliferative or propagative potential. Our results provide evidence that fibroblasts associated with the Fgf9-induced lung adenocarcinoma provide multiple means of support to the tumour. Although the Fgfr blocker significantly suppressed the tumour and its stromal cells, it was not sufficient to completely eliminate the tumour, probably due to the emergence of alternative (resistance/maintenance) mechanism(s). This model represents an excellent tool to further study the complex interactions between CAFs, their related chemokines, and the progression of lung adenocarcinoma; it also provides further evidence to support the need for a combinatorial strategy to treat lung cancer. © 2019 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mari Ozaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Jingtao Gao
- Beijing Chest Hospital, Capital Medical University, Beijing Tuberculosis and Thoracic Tumor Research Institute, Beijing, PR China
| | - Shizuko Kagawa
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroyuki Yasuda
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Kenzo Soejima
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Yongjun Yin
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Robert D Guzy
- Department of Medicine, Section of Pulmonary and Critical Care Medicine, The University of Chicago, Chicago, IL, USA
| | - Yoshikazu Nakamura
- RIBOMIC Inc., Tokyo, Japan.,Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - David M Ornitz
- Department of Developmental Biology, Washington University School of Medicine, Saint Louis, MO, USA
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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7
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He H, Suryawanshi H, Gay-Mimbrera J, Kameyama N, Kim H, Morozov P, Ruano Ruiz J, Krueger J, Tuschl T, Guttman-Yassky E. 1016 Single-cell RNA-sequencing provides novel cell-specific molecular profiling in skin of atopic dermatitis patients and controls. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.1092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Kameyama N, He H, Kim H, Czarnowicki T, Pavel A, Estrada Y, Gonzalez J, Fiorino A, Kolatch B, Sinha A, Seiffert-Sinha K, Krueger J, Guttman-Yassky E. 040 Th/Tc9 and Th/Tc17 pathways are augmented in moderate-to-extensive bullous pemphigoid patients and suppressed by bertilimumab. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.116] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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9
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Czarnowicki T, He H, Kim H, Kameyama N, Han J, Pavel A, Krueger J, Paller A, Guttman-Yassky E. 074 Evolution of pathologic T-cell subsets in atopic dermatitis from infancy to adulthood. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.03.150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Kameyama N, Chubachi S, Hegab AE, Yasuda H, Kagawa S, Tsutsumi A, Fukunaga K, Shimoda M, Kanai Y, Soejima K, Betsuyaku T. Intermittent Exposure to Cigarette Smoke Increases Lung Tumors and the Severity of Emphysema More than Continuous Exposure. Am J Respir Cell Mol Biol 2019; 59:179-188. [PMID: 29443539 DOI: 10.1165/rcmb.2017-0375oc] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Lung cancer and chronic obstructive pulmonary disease are leading causes of morbidity and mortality worldwide, and cigarette smoking is a main risk factor for both. The presence of emphysema, an irreversible lung disease, further raises the risk of lung cancer in patients with chronic obstructive pulmonary disease. The mechanisms involved in smoke-induced tumorigenesis and emphysema are not fully understood, attributable to a lack of appropriate animal models. Here, we optimized a model of cigarette smoke (CS)-induced lung cancer and emphysema in A/J mice treated with 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone, a potent carcinogen. We investigated whether variations in CS exposure patterns with the same total amount and duration of exposure affect tumorigenesis and/or development of emphysema. Continuous CS exposure for 3 months significantly suppressed 4-(methylnitrosamino)-1-(3-pyridyl)-1-butanone-induced development of adenomas and adenocarcinomas; however, emphysema independently developed during this period. Surprisingly, intermittent CS exposure increased the severity of emphysema and resulted in a higher incidence of adenocarcinomas. Furthermore, intermittent CS exposure elicited a marked increase in M2-polarized macrophages within and near the developed tumors. By employing a CS exposure protocol with repeated cycles of cessation and relapse, we provide evidence that intermittent CS exposure enhances tumorigenesis and emphysema progression more than that of continuous CS exposure.
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Affiliation(s)
| | | | - Ahmed E Hegab
- 1 Division of Pulmonary Medicine, Department of Medicine, and
| | - Hiroyuki Yasuda
- 1 Division of Pulmonary Medicine, Department of Medicine, and
| | - Shizuko Kagawa
- 1 Division of Pulmonary Medicine, Department of Medicine, and
| | | | - Koichi Fukunaga
- 1 Division of Pulmonary Medicine, Department of Medicine, and
| | - Masayuki Shimoda
- 2 Department of Pathology, Keio University, School of Medicine, Tokyo, Japan
| | - Yae Kanai
- 2 Department of Pathology, Keio University, School of Medicine, Tokyo, Japan
| | - Kenzo Soejima
- 1 Division of Pulmonary Medicine, Department of Medicine, and
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11
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Masaki K, Tateno H, Kameyama N, Morino E, Watanabe R, Sekine K, Ono T, Satake K, Suzuki S, Nomura A, Betsuyaku T, Fukunaga K. Impact of a Novel Smartphone App (CureApp Smoking Cessation) on Nicotine Dependence: Prospective Single-Arm Interventional Pilot Study. JMIR Mhealth Uhealth 2019; 7:e12694. [PMID: 30777848 PMCID: PMC6399570 DOI: 10.2196/12694] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 12/30/2018] [Accepted: 01/07/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Mobile apps have been considered to provide active and continuous support for smoking cessation. However, it is yet to be known whether a smoking cessation smartphone app improves long-term abstinence rates in nicotine-dependent patients. OBJECTIVE This study aimed to evaluate the long-term abstinence effect of a novel smartphone app, CureApp Smoking Cessation (CASC), in patients with nicotine dependence. METHODS In this prospective, interventional, multicenter, single-arm study, we provided the CASC app to all the participants, who used it daily for 24 weeks. The CASC app includes features to maximize the therapeutic effect of pharmacological therapies and counseling at outpatient clinics for smoking cessation. The primary endpoint was a continuous abstinence rate (CAR) from weeks 9 to 24, whereas secondary endpoints were CARs from weeks 9 to 12 and 9 to 52. RESULTS Of the 56 adult smokers recruited, 1 did not download the app; therefore, 55 participants constituted the full analysis sample. The CAR from weeks 9 to 24 was 64% (35/55, 95% CI 51%-76%), whereas the CARs from weeks 9 to 12 and 9 to 52 were 76% (42/55, 95% CI 65%-88%) and 58% (32/55, 95% CI 46%-71%), respectively. These CARs were better than the results of the national survey on outpatient clinics with regard to smoking cessation under the National Health Insurance Program and that of the varenicline phase 3 trial in Japan and the United States. There was only 1 participant who dropped out during the 12 weeks of the treatment period. This treatment decreased the scores related to withdrawal and craving symptoms. CONCLUSIONS The addition of CASC to usual smoking cessation therapies resulted in high CARs, high patient retention rates, and improvement of cessation-related symptoms. The smartphone app CASC is a feasible and useful tool to help long-term continuous abstinence that can be combined with a standard smoking cessation treatment program.
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Affiliation(s)
- Katsunori Masaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hiroki Tateno
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
- Department of Internal Medicine, Saitama City Hospital, Saitama, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Eriko Morino
- Department of Respiratory Medicine, Disease Control and Prevention Center, National Center for Global Health and Medicine, Tokyo, Japan
| | - Riri Watanabe
- Department of General Internal Medicine, National Center for Global Health and Medicine, Tokyo, Japan
| | - Kazuma Sekine
- Akao Clinic, Yokohama, Japan
- Department of Respiratory Medicine, Nippon Koukan Hospital, Kawasaki, Japan
| | | | - Kohta Satake
- CureApp Institute, Karuiwaza, Japan
- CureApp Inc, Tokyo, Japan
| | | | - Akihiro Nomura
- CureApp Institute, Karuiwaza, Japan
- Innovative Clinical Research Center, Kanazawa University, Kanazawa, Japan
- Department of Cardiovascular and Internal Medicine, Kanazawa University Graduate School of Medicine, Kanazawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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Kameyama N, Chubachi S, Sasaki M, Tsutsumi A, Irie H, Sakurai K, Sayama K, Nakamura H, Asano K, Betsuyaku T, Fukunaga K. Predictive and modifying factors of bone mineral density decline in patients with COPD. Respir Med 2019; 148:13-23. [PMID: 30827469 DOI: 10.1016/j.rmed.2019.01.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Revised: 01/07/2019] [Accepted: 01/08/2019] [Indexed: 01/31/2023]
Abstract
RATIONALE Various determinants of osteoporosis have been previously identified. However, only a few longitudinal studies have examined related factors. We aimed to investigate factors predicting and modifying rapid decline of bone mineral density in patients with chronic obstructive pulmonary disease. METHODS We analyzed patients with chronic obstructive pulmonary disease whose bone mineral density were measured at least three times over three years (n = 111). We divided annual per cent changes of bone mineral density in different body parts into tertiles. Rapid decliners (n = 33) were defined as those with the largest decline in at least two parts; all other participants were defined as non-rapid decliners (n = 78). RESULTS At enrollment, bone mineral density did not differ between the two groups. However, rapid decliners had a significantly greater rate of new vertebral fractures over 3 years compared with non-rapid decliners. On multivariate logistic regression analysis, age, moderate to severe emphysema, no daily exercise habits, and anemia increased the likelihood of rapid decliners. Furthermore, patients who newly started and continued bisphosphonate exhibited higher annual per cent changes of bone mineral density than did those without bisphosphonate use. CONCLUSIONS A rapid decline in bone mineral density correlates to a higher likelihood of vertebral fracture. We clarified the predictors of bone mineral density decline and demonstrated that bisphosphonate use might modify bone mineral density in patients with chronic obstructive pulmonary disease.
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Affiliation(s)
- Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Kaori Sakurai
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Koichi Sayama
- Division of Pulmonary Medicine, Kawasaki Municipal Hospital, 12-1 Shinkawadori, Kawasaki-ku, Kawasaki-shi, Kanagawa, 210-0013, Japan
| | - Hidetoshi Nakamura
- Division of Pulmonary Medicine, Saitama Medical University Hospital, 38 Morohongo Moroyama-machi, Iruma-gun, Saitama, 350-0495, Japan
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, 143 Shimokasuya, Isehara-shi, Kanagawa, 259-1193, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Koichi Fukunaga
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Irie H, Chubachi S, Sato M, Sasaki M, Kameyama N, Inoue T, Oyamada Y, Nakamura H, Asano K, Betsuyaku T. Impact of cataract on health-related quality of life in a longitudinal Japanese chronic obstructive pulmonary cohort. Chron Respir Dis 2018; 15:329-338. [PMID: 29232989 PMCID: PMC6234576 DOI: 10.1177/1479972317745735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 10/20/2017] [Indexed: 01/19/2023] Open
Abstract
Cigarette smoking increases the risk of developing both cataract and chronic obstructive pulmonary disease (COPD). The prevalence of cataract and the clinical characteristics of COPD patients with cataract were retrospectively investigated in a 2-year observational COPD cohort. We analyzed 395 patients with complete data on ophthalmologic evaluation (319 subjects with COPD and 76 subjects at risk of COPD). There was no difference in the prevalence of cataract between COPD patients and those at risk (47.0% vs. 42.1%, p = 0.44). Age ≥ 75 years, low body mass index, and hypertension were independently associated with cataract as a comorbidity in COPD. The incidence of exacerbation within 2 years was significantly higher in COPD patients with cataract than those without cataract (36.6% vs. 18.3%, p = 0.0019). COPD patients with cataract exhibited significantly higher COPD assessment test score compared to those without cataract (13.7 ± 8.9 vs. 11.5 ± 7.2, p = 0.0240). Overall St George's Respiratory Questionnaire score and each component were significantly worse in COPD patients with cataract compared to those without cataract. COPD patients with cataract exhibited poor health-related quality of life and frequent exacerbations. The association between cataract and exacerbations of COPD deserves further attention.
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Affiliation(s)
- Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
| | - Takashi Inoue
- Department of Internal Medicine, Sano Kousei General Hospital, Sano,
Tochigi, Japan
| | - Yoshitaka Oyamada
- Department of Respiratory Medicine, National Hospital Organization Tokyo
Medical Center, Meguro, Tokyo, Japan
| | - Hidetoshi Nakamura
- Department of Respiratory Medicine, Saitama Medical University, Iruma-gun,
Saitama, Japan
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University
School of Medicine, Isehara-shi, Kanagawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University
School of Medicine, Shinjuku-ku, Tokyo, Japan
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Yoshioka N, Kurata K, Takahashi T, Ariizumi M, Mori T, Fujisawa H, Kameyama N, Okuyama Y. Body odour aldehyde reduction by acetic acid bacterial extract including enzymes: alcohol dehydrogenase and aldehyde dehydrogenase. Int J Cosmet Sci 2018; 40:425-428. [PMID: 29897105 DOI: 10.1111/ics.12473] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 06/11/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The major causes of unpleasant human body odour are aldehydes produced by axillary-resident bacteria. There are many methods of body odour prevention; however, they all carry risks of destroying indigenous dermal bacteria that are necessary for the maintenance of the normal physical function of the skin. Furthermore, some methods cannot directly reduce the concentrations of substances that cause body odour. Therefore, a novel method of reducing body odour more safely and effectively is required. We focused on acetic acid bacterial enzymes, which can convert aldehydes into carboxylic acids, and investigated their effect on aldehydes and body odour. METHODS Subjects with strong body odour were recruited using screening questionnaires. Acetic acid bacterial extract including enzymes was applied to subjects' skin, and their effects were evaluated by trained panellists and by quantitative aldehyde analysis using thermal detector gas chromatography/mass spectrometry. RESULTS Acetic acid bacterial extract including enzymes decreased the ratio of dilution to threshold and the concentration of body odour-producing aldehydes dropped by up to 98.7%. CONCLUSION These results indicate that simply applying acetic acid bacterial enzymes on the skin can reduce the concentration of aldehydes that cause unpleasant body odour by directly converting them into carboxylic acids. Therefore, acetic acid bacterial enzymes can potentially be developed into new products that do not destroy indigenous bacteria and yet can effectively reduce unpleasant body odour.
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Affiliation(s)
- N Yoshioka
- Kewpie Co., 2-5-7 Sengawa-cho, Chofu-shi, Tokyo, 182-0002, Japan
| | - K Kurata
- Kewpie Co., 2-5-7 Sengawa-cho, Chofu-shi, Tokyo, 182-0002, Japan
| | - T Takahashi
- Kewpie Co., 2-5-7 Sengawa-cho, Chofu-shi, Tokyo, 182-0002, Japan
| | - M Ariizumi
- Kewpie Co., 2-5-7 Sengawa-cho, Chofu-shi, Tokyo, 182-0002, Japan
| | - T Mori
- Environmental Control Center Co., Ltd., 3-7-23 Sandamachi, Hachioji-shi, Tokyo, 193-0832, Japan
| | - H Fujisawa
- Environmental Control Center Co., Ltd., 3-7-23 Sandamachi, Hachioji-shi, Tokyo, 193-0832, Japan
| | - N Kameyama
- Environmental Control Center Co., Ltd., 3-7-23 Sandamachi, Hachioji-shi, Tokyo, 193-0832, Japan
| | - Y Okuyama
- Kewpie Co., 2-5-7 Sengawa-cho, Chofu-shi, Tokyo, 182-0002, Japan
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15
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Sakurai K, Chubachi S, Irie H, Tsutsumi A, Kameyama N, Kamatani T, Koh H, Terashima T, Nakamura H, Asano K, Betsuyaku T. Clinical utility of blood neutrophil-lymphocyte ratio in Japanese COPD patients. BMC Pulm Med 2018; 18:65. [PMID: 29720140 PMCID: PMC5932787 DOI: 10.1186/s12890-018-0639-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 04/25/2018] [Indexed: 12/31/2022] Open
Abstract
Background Neutrophil-to-lymphocyte ratio (NLR) is a biomarker of inflammation in chronic obstructive pulmonary disease (COPD) patients. But, a meaningful threshold and the longitudinal changes are unknown. We aimed to investigate the association between NLR and the clinical characteristics of COPD patients and to determine a meaningful threshold and the longitudinal changes for NLR. Methods Keio University and its affiliate hospitals conducted an observational COPD cohort study over 3 years. We performed a blood examination and a pulmonary function test. Blood examination was completed at baseline and annually thereafter, at a time when the disease was stable. Two hundred seventy-four patients who had at least 3 blood examinations over 3 years were included. Results Baseline NLR was correlated with baseline C-reactive protein (CRP) (r = 0.18, p = 0.003) and SAA (r = 0.34, p < 0.001). We defined an NLR score of 2.7 as the arbitrary cut-off value based on upper quartile points. COPD patients with NLR ≥ 2.7 were older (p = 0.037), had a lower BMI (p = 0.005) and a lower %FEV1 (p = 0.0003) compared to patients with NLR < 2.7. Receiver-operating-characteristic (ROC) curves showed the optimal cutoff for the baseline NLR in the predicting moderate/severe exacerbation to be 2.7, which was same as the upper quartile points. Follow-up analysis over 3 years revealed that the differences in the trends of NLR among the three groups based on the categories of exacerbations (moderate or severe, mild, no exacerbation) were significant (p = 0.006). Conclusions NLR is associated with COPD severity and exacerbations. For predicting exacerbations, we estimated the threshold of NLR to be 2.7 at baseline. Trial registration Clinical trial registered with the University Hospital Medication Information Network (UMIN000003470, April 10, 2010). Electronic supplementary material The online version of this article (10.1186/s12890-018-0639-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Kaori Sakurai
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Hidehiro Irie
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takashi Kamatani
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hidefumi Koh
- Department of Medicine, Tachikawa Hospital, Tokyo, Japan
| | - Takeshi Terashima
- Division of Pulmonary Medicine, Department of Internal Medicine, Tokyo Dental College, Chiba, Japan
| | - Hidetoshi Nakamura
- Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
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Sasaki M, Chubachi S, Kameyama N, Sato M, Haraguchi M, Miyazaki M, Takahashi S, Nakano T, Kuroda Y, Betsuyaku T, Matsuo K. Effects of long-term cigarette smoke exposure on bone metabolism, structure, and quality in a mouse model of emphysema. PLoS One 2018; 13:e0191611. [PMID: 29381718 PMCID: PMC5790271 DOI: 10.1371/journal.pone.0191611] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/08/2018] [Indexed: 12/19/2022] Open
Abstract
Smoking is a common risk factor for both chronic obstructive pulmonary disease (COPD) and osteoporosis. In patients with COPD, severe emphysema is a risk factor for vertebral fracture; however, the effects of smoking or emphysema on bone health remain largely unknown. We report bone deterioration in a mouse model of emphysema induced by nose-only cigarette smoke (CS) exposure. Unexpectedly, short-term exposure for 4-weeks decreased bone turnover and increased bone volume in mice. However, prolonged exposure for 20- and 40-weeks reversed the effects from suppression to promotion of bone resorption. This long-term CS exposure increased osteoclast number and impaired bone growth, while it increased bone volume. Strikingly, long-term CS exposure deteriorated bone quality of the lumbar vertebrae as illustrated by disorientation of collagen fibers and the biological apatite c-axis. This animal model may provide a better understanding of the mechanisms underlying the deterioration of bone quality in pulmonary emphysema caused by smoking.
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Affiliation(s)
- Mamoru Sasaki
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Minako Sato
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mizuha Haraguchi
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masaki Miyazaki
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Saeko Takahashi
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Takayoshi Nakano
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Japan
| | - Yukiko Kuroda
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Koichi Matsuo
- Laboratory of Cell and Tissue Biology, Keio University School of Medicine, Tokyo, Japan
- * E-mail:
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Mashimo S, Chubachi S, Tsutsumi A, Kameyama N, Sasaki M, Jinzaki M, Nakamura H, Asano K, Reilly JJ, Betsuyaku T. Relationship between diminution of small pulmonary vessels and emphysema in chronic obstructive pulmonary disease. Clin Imaging 2017; 46:85-90. [DOI: 10.1016/j.clinimag.2017.07.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/12/2017] [Accepted: 07/17/2017] [Indexed: 10/19/2022]
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18
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Chubachi S, Takahashi S, Tsutsumi A, Kameyama N, Sasaki M, Naoki K, Soejima K, Nakamura H, Asano K, Betsuyaku T. Radiologic features of precancerous areas of the lungs in chronic obstructive pulmonary disease. Int J Chron Obstruct Pulmon Dis 2017; 12:1613-1624. [PMID: 28615934 PMCID: PMC5459962 DOI: 10.2147/copd.s132709] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
BACKGROUND Only a few studies have evaluated the radiologic features of pre-existing structural abnormalities where lung cancer may develop. This study aimed to analyze the computed tomography (CT) images of lung areas where new cancer developed in chronic obstructive pulmonary disease (COPD) patients. PATIENTS AND METHODS We conducted a multicenter, longitudinal cohort study, called the Keio COPD Comorbidity Research, to assess the incidence of lung cancer. Emphysema and interstitial abnormalities were evaluated in 240 COPD patients who had baseline CT scans applicable for further digital analyses. For patients who developed lung cancer during the 3-year follow-up period, the local spherical lung density of the precancerous area was individually quantified. RESULTS Lung cancer was newly diagnosed in 21 participants (2.3% per year). The percent-age of low attenuation area in patients who developed lung cancer was higher than that of the other patients (20.0% vs 10.4%, P=0.014). The presence of emphysema (odds ratio [OR] 4.2, 95% confidence interval [CI] 1.0-29.0, P=0.049) or interstitial lung abnormalities (OR 15.6, 95% CI 4.4-65.4, P<0.0001) independently increased the risk for lung cancer. Compared with the density of the entire lung, the local density of the precancerous area was almost the same in patients with heterogeneous emphysema, but it was higher in most patients with interstitial abnormalities. CONCLUSION The presence of emphysema or interstitial abnormalities or a combination of both were independent predictors of lung cancer development in COPD patients. Furthermore, lung cancer most often developed in non-emphysematous areas or in interstitial abnormalities.
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Affiliation(s)
- Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Saeko Takahashi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Katsuhiko Naoki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Kenzo Soejima
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
| | - Hidetoshi Nakamura
- Department of Respiratory Medicine, Saitama Medical University, Irima-gun, Saitama
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, Isehara-shi, Kanagawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Shinjuku-ku, Tokyo
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Lukashenko A, Kameyama N, Kolesnik O, Zvirich V. 617. Preservation of an aberrant hepatic artery arising from the left gastric artery during gastrectomy for gastric cancer. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.337] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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20
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Sato M, Chubachi S, Sasaki M, Haraguchi M, Kameyama N, Tsutsumi A, Takahashi S, Nakamura H, Asano K, Betsuyaku T. Impact of mild exacerbation on COPD symptoms in a Japanese cohort. Int J Chron Obstruct Pulmon Dis 2016; 11:1269-78. [PMID: 27354785 PMCID: PMC4907494 DOI: 10.2147/copd.s105454] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background Patients with COPD might not report mild exacerbation. The frequency, risk factors, and impact of mild exacerbation on COPD status are unknown. Objectives The present study was performed to compare features between mild exacerbation and moderate or severe exacerbation in Japanese patients with COPD. Patients and methods An observational COPD cohort was designed at Keio University and affiliated hospitals to prospectively investigate the management of COPD comorbidities. This study analyzes data only from patients with COPD who had completed annual examinations and questionnaires over a period of 2 years (n=311). Results Among 59 patients with mild exacerbations during the first year, 32.2% also experienced only mild exacerbations in the second year. Among 60 patients with moderate or severe exacerbations during the first year, 40% also had the same severity of exacerbation during the second year. Findings of the COPD assessment test and the symptom component of the St George’s Respiratory Questionnaire at steady state were worse in patients with mild exacerbations than in those who were exacerbation free during the 2-year study period, although the severity of the ratio of predicted forced expiratory volume in 1 second did not differ between them. Severe airflow limitation (the ratio of predicted forced expiratory volume in 1 second <50%) and experience of mild exacerbations independently advanced the likelihood of an elevated COPD assessment test score to ≥2 per year. Conclusion The severity of COPD exacerbation seemed to be temporally stable over 2 years, and even mild exacerbations adversely impacted the health-related quality of life of patients with COPD.
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Affiliation(s)
- Minako Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mizuha Haraguchi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Akihiro Tsutsumi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Saeko Takahashi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Hidetoshi Nakamura
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan; Department of Respiratory Medicine, Saitama Medical University, Saitama, Japan
| | - Koichiro Asano
- Division of Pulmonary Medicine, Department of Medicine, Tokai University School of Medicine, Kanagawa, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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Hegab AE, Kameyama N, Kuroda A, Kagawa S, Yin Y, Ornitz D, Betsuyaku T. Using Micro-computed Tomography for the Assessment of Tumor Development and Follow-up of Response to Treatment in a Mouse Model of Lung Cancer. J Vis Exp 2016. [PMID: 27286135 DOI: 10.3791/53904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Lung cancer is the most lethal cancer in the world. Intensive research is ongoing worldwide to identify new therapies for lung cancer. Several mouse models of lung cancer are being used to study the mechanism of cancer development and to experiment with various therapeutic strategies. However, the absence of a real-time technique to identify the development of tumor nodules in mice lungs and to monitor the changes in their size in response to various experimental and therapeutic interventions hampers the ability to obtain an accurate description of the course of the disease and its timely response to treatments. In this study, a method using a micro-computed tomography (CT) scanner for the detection of the development of lung tumors in a mouse model of lung adenocarcinoma is described. Next, we show that monthly follow-up with micro-CT can identify dynamic changes in the lung tumor, such as the appearance of additional nodules, increase in the size of previously detected nodules, and decrease in the size or complete resolution of nodules in response to treatment. Finally, the accuracy of this real-time assessment method was confirmed with end-point histological quantification. This technique paves the way for planning and conducting more complex experiments on lung cancer animal models, and it enables us to better understand the mechanisms of carcinogenesis and the effects of different treatment modalities while saving time and resources.
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Affiliation(s)
- Ahmed E Hegab
- Division of Pulmonary Medicine, Keio University School of Medicine;
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Keio University School of Medicine
| | - Aoi Kuroda
- Division of Pulmonary Medicine, Keio University School of Medicine
| | - Shizuko Kagawa
- Division of Pulmonary Medicine, Keio University School of Medicine
| | - Yongjun Yin
- Department of Developmental Biology, Washington University School of Medicine
| | - David Ornitz
- Department of Developmental Biology, Washington University School of Medicine
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Keio University School of Medicine
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22
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Asakura T, Kameyama N, Ishii M, Kawada I, Tasaka S, Soejima K, Betsuyaku T. Multiple nodular lesions following
Pneumocystis
pneumonia in a non‐
HIV
immunocompromised patient. Clin Case Rep 2016; 4:528-30. [PMID: 27190623 PMCID: PMC4856253 DOI: 10.1002/ccr3.555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2015] [Revised: 03/03/2016] [Accepted: 03/17/2016] [Indexed: 11/16/2022] Open
Abstract
Cytomegalovirus superinfection is associated with a poor prognosis in non‐HIVPneumocystis pneumonia (PCP) and can cause deterioration of PCP not only simultaneously but also after initiating PCP treatment. Cytomegalovirus pneumonia should be considered in cases with deterioration after initiating PCP treatment; multiple nodular lesions are useful findings for the diagnosis.
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Affiliation(s)
- Takanori Asakura
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Makoto Ishii
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Ichiro Kawada
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Sadatomo Tasaka
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Kenzo Soejima
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine Department of Medicine Keio University School of Medicine 35 Shinanomachi Shinjuku 160‐8582 Tokyo Japan
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23
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Takahashi S, Ishii M, Namkoong H, Hegab AE, Asami T, Yagi K, Sasaki M, Haraguchi M, Sato M, Kameyama N, Asakura T, Suzuki S, Tasaka S, Iwata S, Hasegawa N, Betsuyaku T. Pneumococcal Infection Aggravates Elastase-Induced Emphysema via Matrix Metalloproteinase 12 Overexpression. J Infect Dis 2015; 213:1018-30. [PMID: 26563237 DOI: 10.1093/infdis/jiv527] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 10/27/2015] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Acute exacerbation of chronic obstructive pulmonary disease (COPD)--typically caused by bacterial or viral infection--is associated with poor prognosis and emphysema progression through unknown mechanisms. We aimed to elucidate the mechanisms responsible for the poor prognosis and emphysema progression associated with COPD exacerbation. METHODS We established a mouse model mimicking acute human COPD exacerbation, wherein mice with elastase-induced emphysema were intranasally infected with Streptococcus pneumoniae. RESULTS In mice with elastase-induced emphysema, infection with S. pneumoniae resulted in increased mortality, an increased number of inflammatory cells in bronchoalveolar lavage fluid (BALF), and increased matrix metalloproteinase 12 (MMP-12) production in the lungs, as well as enhanced emphysema progression. The increased MMP-12 production was mostly due to alveolar type II cells, alveolar macrophages, and lymphocytes that aggregated around vessels and bronchioles. Dexamethasone treatment suppressed the mortality rate and number of inflammatory cells in BALF but not emphysema progression, possibly owing to the failure of MMP-12 suppression in the lungs, whereas treatment with the MMP inhibitor ONO-4817 dramatically suppressed both mortality rate and emphysema progression. CONCLUSIONS These results suggest that MMP-12 production during COPD exacerbation results in increased mortality and emphysema progression. Our study identifies MMP-12 as a target to prevent further aggravation of COPD.
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Affiliation(s)
| | - Makoto Ishii
- Division of Pulmonary Medicine, Department of Medicine
| | - Ho Namkoong
- Division of Pulmonary Medicine, Department of Medicine
| | - Ahmed E Hegab
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Kazuma Yagi
- Division of Pulmonary Medicine, Department of Medicine
| | - Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine
| | | | | | - Shoji Suzuki
- Division of Pulmonary Medicine, Department of Medicine
| | | | - Satoshi Iwata
- Department of Infectious Diseases Center for Infectious Disease and Infection Control, Keio University School of Medicine, Tokyo, Japan
| | - Naoki Hasegawa
- Center for Infectious Disease and Infection Control, Keio University School of Medicine, Tokyo, Japan
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24
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Sasaki M, Chubachi S, Kameyama N, Sato M, Haraguchi M, Miyazaki M, Takahashi S, Betsuyaku T. Evaluation of cigarette smoke-induced emphysema in mice using quantitative micro-computed tomography. Am J Physiol Lung Cell Mol Physiol 2015; 308:L1039-45. [PMID: 25820526 DOI: 10.1152/ajplung.00366.2014] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Accepted: 03/25/2015] [Indexed: 11/22/2022] Open
Abstract
Chronic cigarette smoke (CS) exposure provokes variable changes in the lungs, and emphysema is an important feature of chronic obstructive pulmonary disease. The usefulness of micro-computed tomography (CT) to assess emphysema in different mouse models has been investigated, but few studies evaluated the dynamic structural changes in a CS-induced emphysema mouse model. A novel micro-CT technique with respiratory and cardiac gating has resulted in high-quality images that enable processing for further quantitative and qualitative analyses. Adult female C57BL/6J mice were repeatedly exposed to mainstream CS, and micro-CT scans were performed at 0, 4, 12, and 20 wk. Emphysema was also histologically quantified at each time point. Air-exposed mice and mice treated with intratracheal elastase served as controls and comparisons, respectively. End-expiratory lung volume, corresponding to functional residual volume, was defined as the calculated volume at the phase of end-expiration, and it evaluated air trapping. The end-expiratory lung volumes of CS-exposed mice were significantly larger than those of air controls at 12 and 20 wk, which was in line with alveolar enlargement and destruction by histological quantification. However, CS exposure neither increased low attenuation volume nor decreased the average lung CT value at any time point, unlike the elastase-instilled emphysema model. CS-exposed mice had rather higher average lung CT values at 4 and 12 wk. This is the first study characterizing a CS-induced emphysema model on micro-CT over time in mice. Moreover, these findings extend our understanding of the distinct pathophysiology of CS-induced emphysema in mice.
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Affiliation(s)
- Mamoru Sasaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Shotaro Chubachi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Naofumi Kameyama
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Minako Sato
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Mizuha Haraguchi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Masaki Miyazaki
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Saeko Takahashi
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
| | - Tomoko Betsuyaku
- Division of Pulmonary Medicine, Department of Medicine, Keio University School of Medicine, Tokyo, Japan
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25
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Tsumori K, Nakano H, Kisaki M, Ikeda K, Nagaoka K, Osakabe M, Takeiri Y, Kaneko O, Shibuya M, Asano E, Kondo T, Sato M, Komada S, Sekiguchi H, Kameyama N, Fukuyama T, Wada S, Hatayama A. Spatial distribution of the charged particles and potentials during beam extraction in a negative-ion source. Rev Sci Instrum 2012; 83:02B116. [PMID: 22380273 DOI: 10.1063/1.3672116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on the characteristics of the electronegative plasma in a large-scale hydrogen negative ion (H(-)) source. The measurement has been made with a time-resolved Langmuir probe installed in the beam extraction region. The H(-) density is monitored with a cavity ring-down system to identify the electrons in the negative charges. The electron-saturation current decreases rapidly after starting to seed Cs, and ion-ion plasma is observed in the extraction region. The H(-) density steps down during the beam extraction and the electron density jumps up correspondingly. The time integral of the decreasing H(-) charge density agrees well with the electron charge collected with the probe. The agreement of the charges is interpreted to indicate that the H(-) density decreasing at the beam extraction is compensated by the electrons diffusing from the driver region. In the plasmas with very low electron density, the pre-sheath of the extraction field penetrates deeply inside the plasmas. That is because the shielding length in those plasmas is longer than that in the usual electron-ion plasmas, and furthermore the electrons are suppressed to diffuse to the extraction region due to the strong magnetic field.
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Affiliation(s)
- K Tsumori
- National Institute for Fusion Science, 322-1 Oroshi Toki-city, Figu 509-5292, Japan.
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26
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Koga S, Shibata T, Terasaki R, Kameyama N, Hatayama A, Bacal M, Tsumori K. Analysis of H atoms in a negative ion source plasma with the non-equilibrium electron energy distribution function. Rev Sci Instrum 2012; 83:02A717. [PMID: 22380226 DOI: 10.1063/1.3673009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
In negative ion sources for the neutral beam injection, it is important to calculate H atom flux onto the plasma grid (PG) surface for the evaluation of H(-) production on the PG surface. We have developed a neutral (H(2) molecules and H atoms) transport code. In the present study, the neutral transport code is applied to the analysis of the H(2) and H transport in a NIFS-R&D ion source in order to calculate the flux onto the PG surface. Taking into account non-equilibrium feature of the electron energy distribution function (EEDF), i.e., the fast electron component, we have done the neutral transport simulation. The results suggest that the precise evaluation of the EEDF, especially in the energy range 15 eV < E < 30 eV is important for the dissociation rate of H(2) molecules by the electron impact collision and the resultant H atom flux on the PG.
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Affiliation(s)
- S Koga
- Graduate School of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan
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27
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Kameyama N, Fukuyama T, Wada S, Kuppel S, Tsumori K, Nakano H, Hatayama A, Miyamoto K, Fukano A, Bacal M. Analysis of the H- ion emissive surface in the extraction region of negative ion sources. Rev Sci Instrum 2012; 83:02A721. [PMID: 22380230 DOI: 10.1063/1.3673495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
To understand the plasma characteristics in the extraction region of negative H(-) sources is very important for the optimization of H(-) extraction from the sources. The profile of plasma density and electrostatic potential in the extraction region with and without extraction grid voltage are analyzed with a 2D particle in cell modeling of the NIFS-RD H(-) sources. The simulation results make clear the physical process forming a double ion plasma layer (which consists only of positive H(+) and negative H(-) ions) recently observed in the Cs-seeded experiments of the NIFS-R&D source in the vicinity of the extraction hole and the plasma grid. The results also give a useful insight into the formation mechanism of the plasma meniscus and the H(-) extraction process for such double ion plasma.
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Affiliation(s)
- N Kameyama
- Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, 223-8522, Japan
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28
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Islam MS, Lian C, Kameyama N, Wu B, Hogetsu T. Development of microsatellite markers in Rhizophora stylosa using a dual-suppression-polymerase chain reaction technique. ACTA ACUST UNITED AC 2004. [DOI: 10.1046/j.1471-8286.2003.00585.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Nishina T, Okabayashi H, Shimada I, Ohno N, Minatoya K, Kameyama N, Soga Y, Matsubayashi K. [A successful case of emergency CABG using PCPS due to acute myocardial infarction]. Kyobu Geka 1995; 48:773-5. [PMID: 7564041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A successful case of emergency CABG (Coronary Artery bypass Grafting) by using PCPS (Percutaneous Cardio Pulmonary Bypass) for a 60-year-old with shock due to acute myocardial infarction was reported. He developed shock due to acute myocardial infarction before arrival at our hospital. He was resuscitated by PCPS. Coronary angiography revealed that LMT was 99% stenosed and LAD just proximal was totally occluded. Emergency CABG was performed to LAD and CX using saphenous vein grafts. Post-operative course was uneventful and the patient was discharged at hospital two months after the operation. PCPS is useful for bridge until emergency CABG.
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Affiliation(s)
- T Nishina
- Department of Cardiovascular Surgery, Kokura Memorial Hospital, Japan
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30
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Affiliation(s)
- S Yazawa
- Department of Legal Medicine, School of Medicine, Gunma University, Maebashi, Japan
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31
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Shioda Y, Koizumi S, Furuya S, Akira S, Kameyama N, Hamano N, Takahashi W, Tokunaga A, Tanaka N, Onda M. Intussusception caused by a carcinoma of the cecum during pregnancy: report of a case and review of the literature. Surg Today 1993; 23:556-61. [PMID: 8358201 DOI: 10.1007/bf00730635] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A case of intussusception due to a carcinoma of the cecum during pregnancy is reported. A 27-year-old pregnant female was admitted to Shimodate Municipal Hospital because of abdominal pain, nausea and vomiting. Her abdomen was distended, and a relatively hard mass was palpable in the right hypochondrium. Following a diagnosis of intussusception by ultrasonography, a laparotomy was performed. The lesion causing the intussusception was found to be a carcinoma of the cecum, and thus a right hemicolectomy with lymph node dissection was carried out. Histological examination revealed that the tumor was a well-differentiated adenocarcinoma which had invaded the muscularis propria but was superficial to the subserosa. None of the lymph nodes were cancerous. The incidence of colonic cancer above the peritoneal reflection during pregnancy is very low. Only 24 cases have been previously reported; our patient is only the 25th case, as well as being the first case demonstrating Dukes' A. Due to the intussusception, ultrasonography was effective for diagnosis and the patient was able to undergo a curative operation at an earlier stage than other patients.
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Affiliation(s)
- Y Shioda
- Department of Surgery, Shimodate Municipal Hospital, Ibaraki, Japan
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32
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Oguni H, Kameyama N. [Man and nursing. On nursing care. 9. Care as a profession: a discussion]. Kango Tenbo 1989; 14:1156-61. [PMID: 2622192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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33
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Yamada J, Hashimoto Y, Shionoya K, Katoh S, Furukawa Y, Marumo S, Kameyama N, Uchiyama M, Yamamoto T. [Bronchospasm caused by intravenous methylprednisolone administration]. Masui 1986; 35:1574-6. [PMID: 3806948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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34
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Kameyama N. [Studies on perinatal assessment of fetal well-being by vibratory stimuli]. Nihon Ika Daigaku Zasshi 1983; 50:468-79. [PMID: 6630420 DOI: 10.1272/jnms1923.50.468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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35
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Konno Y, Kameyama N, Sasaki I, Miyakawa H. [Measurement of gastric mucosal blood flow with hydrogen clearance technic: a new method for fixation of electrode using gastric fistura]. Nihon Shokakibyo Gakkai Zasshi 1983; 80:237. [PMID: 6865067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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36
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