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Sekizawa K, Nakagawa K, Ichikawa Y, Suwa H, Ozawa M, Momiyama M, Ishibe A, Watanabe J, Ota M, Kato I, Endo I. Relationship between stromal regulatory T cells and the response to neoadjuvant chemotherapy for locally advanced rectal cancer. Surg Today 2021; 52:198-206. [PMID: 34081199 DOI: 10.1007/s00595-021-02311-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Accepted: 04/25/2021] [Indexed: 11/30/2022]
Abstract
BACKGROUND In addition to the direct power of anticancer drugs, the effectiveness of anticancer therapy depends on the host immune function. The present study investigated whether or not the reduction rate and histological response of preoperative chemotherapy were related to the immune microenvironment surrounding a primary tumor of the rectum. METHODS Sixty-five patients received preoperative chemotherapy followed by resection from 2012 to 2014; all of these patients were retrospectively analyzed. CD3, CD8, and FoxP3 were immunohistochemically examined as markers for T lymphocytes, cytotoxic T lymphocytes, and regulatory T lymphocytes (Treg), respectively. The correlation between the tumor-infiltrating lymphocyte composition and the tumor reduction rate and histological response to neoadjuvant chemotherapy was investigated. RESULTS The average tumor reduction rate was 41.5% ± 18.8%. According to RECIST, 47 patients (72.3%) achieved a partial response (PR), and 1 patient (1.5%) achieved a complete response (CR). Eight patients (12.3%) showed a grade 2 histological response, and 2 (3.1%) showed a grade 3 response. A multivariate analysis demonstrated that a low Treg infiltration in stromal cell areas was significantly associated with the achievement of a PR or CR [odds ratio (OR) 7.69; 95% confidence interval (CI) 1.96-33.33; p < 0.01] and a histological grade 2 or 3 response (OR 11.11; 95% CI 1.37-98.04; p = 0.02). CONCLUSION A low Treg infiltration in the stromal cell areas may be a marker of a good response to neoadjuvant chemotherapy in patients with locally advanced rectal cancer.
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Affiliation(s)
- Kentaro Sekizawa
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Kazuya Nakagawa
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Yasushi Ichikawa
- Department of Oncology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hirokazu Suwa
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Mayumi Ozawa
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Masashi Momiyama
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Atsushi Ishibe
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Jun Watanabe
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Mitsuyoshi Ota
- Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama, Japan
| | - Ikuma Kato
- Department of Molecular Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Itaru Endo
- Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
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Williams E, Sekizawa K, Hinde DJ, Simenel C, Dasgupta M, Carter IP, Cook KJ, Jeung DY, McNeil SD, Palshetkar CS, Rafferty DC, Ramachandran K, Wakhle A. Exploring Zeptosecond Quantum Equilibration Dynamics: From Deep-Inelastic to Fusion-Fission Outcomes in ^{58}Ni+^{60}Ni Reactions. Phys Rev Lett 2018; 120:022501. [PMID: 29376683 DOI: 10.1103/physrevlett.120.022501] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 10/27/2017] [Indexed: 06/07/2023]
Abstract
Energy dissipative processes play a key role in how quantum many-body systems dynamically evolve toward equilibrium. In closed quantum systems, such processes are attributed to the transfer of energy from collective motion to single-particle degrees of freedom; however, the quantum many-body dynamics of this evolutionary process is poorly understood. To explore energy dissipative phenomena and equilibration dynamics in one such system, an experimental investigation of deep-inelastic and fusion-fission outcomes in the ^{58}Ni+^{60}Ni reaction has been carried out. Experimental outcomes have been compared to theoretical predictions using time dependent Hartree-Fock and time dependent random phase approximation approaches, which, respectively, incorporate one-body energy dissipation and fluctuations. Excellent quantitative agreement has been found between experiment and calculations, indicating that microscopic models incorporating one-body dissipation and fluctuations provide a potential tool for exploring dissipation in low-energy heavy ion collisions.
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Affiliation(s)
- E Williams
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - K Sekizawa
- Faculty of Physics, Warsaw University of Technology, ulica Koszykowa 75, 00-662 Warsaw, Poland
| | - D J Hinde
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - C Simenel
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - M Dasgupta
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - I P Carter
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - K J Cook
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - D Y Jeung
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - S D McNeil
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - C S Palshetkar
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - D C Rafferty
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - K Ramachandran
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
| | - A Wakhle
- Department of Nuclear Physics, Research School of Physical Sciences and Engineering, The Australian National University, Canberra, ACT 2601, Australia
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Sekizawa K, Ichikawa Y, Ishibe A, Suwa H, Momiyama M, Kato I, Ota M, Endo I. Abstract 4894: Relationship of characterization of the immunological microenvironment and pathological response in advanced rectal cancer after oxaliplatin-based neoadjuvant chemotherapy. Cancer Res 2016. [DOI: 10.1158/1538-7445.am2016-4894] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
Characterization of the immunological microenvironment has been demonstrated to be associated with prognosis and the effect of chemotherapy of various cancers. Then it has been shown by their role several studies in 5-FU-based neoadjuvant chemoradiotherapy for rectal cancer. However, their role in neoadjuvant chemotherapy (NAC) for rectal cancer remains unknown. The objective of this study was to examine the relationship between immune reactions and the pathological response to induction oxaliplatin-based NAC in patients with advanced rectal cancer.
Methods:
A total of 65 patients with advanced rectal cancer who underwent induction oxaliplatin-based NAC followed by surgical resection were enrolled. The resected tumor specimens were counted positive cell of tumor infiltrating lymphocytes (TILs) and macrophages by using immunohistochemical staining for CD3, CD8, Foxp3, CD86, CD206. We analyzed for the relationship between the numbers of TILs or macrophages at the stroma in resected specimens and the pathological response to induction oxaliplatin-based NAC.
Results:
The numbers of Foxp3+ TILs in resected specimens were strongly correlated with pathological response. Patients with higher number of Foxp3+ TILs showed poor pathological response (p<0.001). There were no statistically significant differences between the number of CD3+, CD8+ TILs and pathological response, but patients with higher ratio of CD8+/FOXP3+ TILs was associated with good pathological response (p = 0.023). No associations were observed between the numbers of CD86+, CD206+ macrophages and pathological response.
Conclusions:
In rectal cancer patients, T lymphocyte-mediated immune reactions significantly correlated with pathological response of oxaliplatin-based NAC for advanced rectal cancer. These were similar to the T lymphocyte-mediated immune responses in the neoadjuvant radiation therapy for rectal cancer.
Citation Format: Kentaro Sekizawa, Yasushi Ichikawa, Atsushi Ishibe, Hirokazu Suwa, Masashi Momiyama, Ikuma Kato, Mitsuyoshi Ota, Itaru Endo. Relationship of characterization of the immunological microenvironment and pathological response in advanced rectal cancer after oxaliplatin-based neoadjuvant chemotherapy. [abstract]. In: Proceedings of the 107th Annual Meeting of the American Association for Cancer Research; 2016 Apr 16-20; New Orleans, LA. Philadelphia (PA): AACR; Cancer Res 2016;76(14 Suppl):Abstract nr 4894.
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Affiliation(s)
- Kentaro Sekizawa
- 1Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
| | - Yasushi Ichikawa
- 2Department of Oncology, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
| | - Atsushi Ishibe
- 1Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
| | - Hirokazu Suwa
- 3Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama-city Kanagawa-ken, Japan
| | - Masashi Momiyama
- 1Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
| | - Ikuma Kato
- 4Department of Pathology, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
| | - Mitsuyoshi Ota
- 3Department of Surgery, Gastroenterological Center, Yokohama City University Medical Center, Yokohama-city Kanagawa-ken, Japan
| | - Itaru Endo
- 1Department of Gastroenterological Surgery, Yokohama City University Graduate School of Medicine, Yokohama-city Kanagawa-ken, Japan
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Yamamoto S, Rafique T, Fukui K, Sekizawa K, Niino T. V-cryo-plate procedure as an effective protocol for cryobanks: case study of mint cryopreservation. Cryo Letters 2012; 33:12-23. [PMID: 22434118] [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: 05/31/2023]
Abstract
A vitrification procedure using aluminium cryo-plates (V-Cryo-plate procedure) was successfully developed and adjusted for in vitro-grown mint (Mentha spp.) shoot tips. Shoots were cultured at 25°C on MS medium containing 0.088 M sucrose for 7 to 14 days after the last subculture. Shoot tips with a basal part (1-1.5 mm × 1 mm) were dissected from the shoots and precultured at 25°C for 1 day on the same medium. Precultured shoot tips were placed on aluminium cryo-plates with 10 wells and embedded in alginate gel. Osmoprotection was performed by immersing the cryo-plates for 30 min at 25 degree C in 25 ml pipetting reservoirs filled with loading solution (2 M glycerol + 0.8 M sucrose). For dehydration, the cryo-plates were transferred and immersed in 25 ml pipetting reservoirs filled with PVS2 for 20 min at 25 degree C. Then the cryo-plates were transferred in uncapped 2 ml cryotubes and directly plunged into liquid nitrogen. For rewarming, shoot tips attached to the cryo-plates were immersed in cryotubes containing 2 ml 1 M sucrose solution at room temperature. Using this procedure, regrowth of cryopreserved shoot tips of line 'Fukuyamajisei' reached over 90 percent. This protocol was successfully applied to 16 additional Mentha lines, with regrowth ranging from 73 percent to 100 percent. This V-Cryo-plate method will facilitate the cryostorage of mint germplasm in our genebank.
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Affiliation(s)
- S Yamamoto
- Genebank, National Institute of Agrobiological Sciences (NIAS), Tsukuba, Japan
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Haraguchi N, Satoh H, Ogawa R, Hashimoto Y, Sekizawa K. Chemotherapy in a Patient with Small-cell Lung Cancer Undergoing Haemodialysis. Clin Oncol (R Coll Radiol) 2005; 17:663. [PMID: 16372496 DOI: 10.1016/j.clon.2005.05.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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7
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Sumi M, Satoh H, Sekizawa K. Use of hypnotics in patients with chronic obstructive pulmonary disease. Chron Respir Dis 2005; 1:62. [PMID: 16281670 DOI: 10.1191/1479972304cd003xx] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
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8
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Hegab AE, Sakamoto T, Sekizawa K. Assessing the validity of genetic association studies. Thorax 2005; 60:882-3; author reply 883. [PMID: 16192369 PMCID: PMC1747198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
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Abstract
A segmental collapse due to mucous plug in the bronchus tree may mimic malignant pathological conditions. We present a case of 58-year-old asthmatic patient with an obstruction of right medial basal bronchus due to mucous plug, which was simulating mediastinal mass. To the best knowledge, a similar case is not reported in the English medical literature.
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Affiliation(s)
- A Naito
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki, Japan
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Hegab AE, Sakamoto T, Uchida Y, Nomura A, Ishii Y, Morishima Y, Mochizuki M, Kimura T, Saitoh W, Kiwamoto T, Iizuka T, Massoud HH, Massoud HM, Hassanein KM, Sekizawa K. Association analysis of tissue inhibitor of metalloproteinase2 gene polymorphisms with COPD in Egyptians. Respir Med 2005; 99:107-10. [PMID: 15672858 DOI: 10.1016/j.rmed.2004.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Proteinase/antiproteinase imbalance is recognized to play an important role in the pathogenesis of chronic obstructive pulmonary disease (COPD). A relative increase in the activities of matrix metalloproteinases might be caused by mutations of tissue inhibitor of metalloproteinase2 (TIMP2). Recently, two polymorphisms of the TIMP2 gene, +853 G/A and -418 G/C (+551 and -720 from the translation initiation site), have been shown to be associated with the development of COPD in the Japanese population. In this study, a case-control association analysis for these polymorphisms was conducted in the Egyptian population using 106 COPD patients and 72 healthy controls. The genotype frequency of +853 G/A was significantly different between the patient and the control groups (P = 0.029), although no significant difference was detected in the allele frequency between the two groups. These results suggest that the +853 G/A polymorphism of the TIMP2 gene might be associated with COPD across ethnicities. In contrast, neither the distributions of genotype nor allele frequencies of -418 G/C were significantly different between the two groups, raising the possibility that a combination of different genetic factors contributes to the development of COPD in different ethnic groups.
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Affiliation(s)
- A E Hegab
- Department of Pulmonary Medicine, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennoudai, Tsukuba, Ibaraki 305-8575, Japan
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki 305-8575, Japan.
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Arai T, Sekizawa K, Ohrui T, Fujiwara H, Yoshimi N, Matsuoka H, Sasaki H. ACE inhibitors and protection against pneumonia in elderly patients with stroke. Neurology 2005; 64:573-4. [PMID: 15699404 DOI: 10.1212/01.wnl.0000150897.14961.0f] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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14
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Homma S, Satoh H, Kagohashi K, Fujiwara M, Kamma H, Sekizawa K. Production of CA125 by human lung cancer cell lines. Clin Exp Med 2004; 4:139-41. [PMID: 15599662 DOI: 10.1007/s10238-004-0047-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2003] [Revised: 10/16/2004] [Indexed: 11/24/2022]
Abstract
CA125, which until recently was considered an ovary specific tumor marker, is elevated in the serum of patients with many pathological conditions, including lung cancer. In order to investigate the production of CA125 by human lung cancer cell lines, cell culture and immunochemical staining were performed in three cell lines. Our results showed the cell surface expression of CA125 in both adenocarcinoma and large cell carcinoma cell lines and the production of CA125 in culture medium. This is considered as evidence for in vitro production of CA125 by human lung cancer, and suggests that CA125 elevation is not only the result of ovarian cancer but may be due to other pathological conditions, including lung cancer.
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Affiliation(s)
- S Homma
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki, 305-8575, Japan
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Hegab AE, Sakamoto T, Uchida Y, Nomura A, Ishii Y, Morishima Y, Mochizuki M, Kimura T, Saitoh W, Massoud HH, Massoud HM, Hassanein KM, Sekizawa K. CLCA1 gene polymorphisms in chronic obstructive pulmonary disease. J Med Genet 2004; 41:e27. [PMID: 14985398 PMCID: PMC1735703 DOI: 10.1136/jmg.2003.012484] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Abstract
Endostatin is an angiogenesis inhibitor that is an endogenously produced proteolytic fragment of type XVIII collagen. Although serum levels of endostatin have extensively been studied in patients with malignant diseases, endostatin in pleural effusion has not been fully evaluated. In order to determine whether endostatin is present in pleural effusion, and to determine whether endostatin levels vary in pleural effusion of different etiology, we measured levels of endostatin in 38 malignant pleural effusion due to lung cancer patients and 29 patients with non-malignant disease using an ELISA kit. Free form of endostatin was measurable (> 11.2 pg/ml) in 26 of 38 malignant and 13 of 29 non-malignant pleural effusion. Endostatin levels in the 38 malignant pleural effusion were significantly higher than those in patients with the 29 patients with non-malignant diseases ( p = 0.0131). However, there was not statistically significant difference between the patients with pleuropneumonia and those with tuberculous pleurisy ( p = 0.2194). In malignant pleural effusion due to lung cancer, the pleural effusion endostatin levels did not differ when the histological types of lung cancer were considered ( p = 0.0674). Endostatin was present in both malignant and non-malignant pleural effusion, and elevated levels of endostatin were observed in malignant pleural effusion. Although the mechanisms are unclear, elevated levels of endostatin in pleural effusion may represent the local productions of endostatin in pleural space.
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Affiliation(s)
- M Sumi
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-City, Ibaraki 305-8575, Japan
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Abstract
The overexpression of heterogeneous nuclear ribonucleoprotein (hnRNP) A2/B1, especially of B1, had been reported to detect preclinical lung cancer for early detection. In order to examine whether the expression of the protein is specific for lung cancer, we investigated the expression of the protein in human nonmalignant alveolar cells. Human airway cells obtained by bronchoalveolar lavage (BAL) were analyzed by immunostaining and Western blotting using monoclonal antibodies 4G8 (specifically reacts to A2) and 2B2 (specific to B1). In alveolar cells obtained by BAL, hnRNP A2/B1 proteins were localized primarily in the nucleus, excluding the nucleolus, although the expression of A2 protein was weaker than that of B1 protein. Staining pattern of these cells was similar to those observed in cancer cells. Western blotting with 4G8 and 2B2 demonstrated expression of A2 and B1 proteins in the airway cells. HnRNP A2/B1 proteins were apparently expressed in nonmalignant alveolar cells as well as cancer cells, although the expression in alveolar cells was weaker than that of cancer cells. More quantitative determination of A2/B1 is required to elucidate their significance in early lung cancer detection.
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba City, Ibaraki, Japan.
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Akazawa Y, Satoh H, Takeda YY, Takiguchi K, Ishikawa H, Ohtsuka M, Sekizawa K. Significantly lower rate of smoking in female compared to male patients with lung adenocarcinoma. Eur J Cancer Care (Engl) 2003; 12:283-5. [PMID: 12919308 DOI: 10.1046/j.1365-2354.2003.00411.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/20/2022]
Abstract
To examine the relationship between smoking and lung adenocarcinoma in female patients, we performed a retrospective chart review for 470 patients with lung adenocarcinoma at our hospital. The proportions of non-smokers were higher in female patients than those of male patients. A significant difference in smoking history was found between female and male patients. Not only active smoking but also passive smoking may influence the development of female lung adenocarcinoma, which reinforces the need for effective programmes aimed refraining from smoking and cessation among men as well as women.
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Affiliation(s)
- Y Akazawa
- Department of Nursing, University of Tsukuba Hospital, Tsukuba-city, Ibaraki 305-8575, Japan
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Kikuchi N, Nomura A, Ishii Y, Sekizawa K, Harada H, Ishii K, Wada T. Progressive encephalomyelitis with rigidity as refractory asthma. Thorax 2003; 58:645. [PMID: 12832689 PMCID: PMC1746724 DOI: 10.1136/thorax.58.7.645-a] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Kagohashi K, Satoh H, Ishikawa H, Ohtsuka M, Sekizawa K. Bone metastasis as the first manifestation of lung cancer. Int J Clin Pract 2003; 57:184-6. [PMID: 12723721] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/02/2023] Open
Abstract
Bone metastasis usually occurs late in the course of the disease, but in some patients it is the first manifestation of lung cancer. To evaluate the characteristics of patients with bone metastasis as a first manifestation of lung cancer, the medical records of 1063 patients with lung cancer between 1976 and 2001 were reviewed retrospectively. Twenty-four (2.3%) lung cancer patients presented symptoms of bone metastasis as a first manifestation; 11 patients had bone metastasis as the only site of spread in lung cancer; 16 had adenocarcinoma; five had a primary lesion <30 mm, and nine had N0-1 disease. Patients with sole bone metastasis did not have a more favourable survival rate than patients with bone and other systemic metastases (p=0.2938). Whether metastasis is the first manifestation of lung cancer or not, the occurrence of bone metastasis generally means a poor prognosis.
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Affiliation(s)
- K Kagohashi
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
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Nomura A, Fujisawa H, Sekizawa K. Treatment of bullous pemphigoid with a leukotriene receptor antagonist. Allergy 2003; 58:162-3. [PMID: 12622754 DOI: 10.1034/j.1398-9995.2003.00056_6.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- A Nomura
- Department of Respiratory Medicine Institute of Clinical Medicine, University of Tsukuba, Tennoudai 1-1-1, Tsukuba, Ibaraki 305-8575, Japan
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Affiliation(s)
- H Ishikawa
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsuskuba-City, Ibaraki, Japan
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Nomura A, Uchida Y, Sakamoto T, Ishii Y, Masuyama K, Morishima Y, Hirano K, Sekizawa K. Increases in collagen type I synthesis in asthma: the role of eosinophils and transforming growth factor-beta. Clin Exp Allergy 2002; 32:860-5. [PMID: 12047432 DOI: 10.1046/j.1365-2745.2002.01404.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.8] [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: 11/20/2022]
Abstract
BACKGROUND Collagen type I is one of the major deposits in thickening of the reticular basement membrane of asthma. OBJECTIVE AND METHODS In this study, we assessed turnover of collagen type I in asthma by measuring procollagen type I C-terminal peptide (PICP) and collagen type I C-terminal telopeptide (ICTP) in induced sputum. RESULTS PICP but not ICTP was found to be significantly higher in asthma subjects than in normal volunteers (P < 0.05). In asthma, PICP was inversely correlated with %FEV(1.0) (r = -0.539), and its levels significantly increased upon exacerbation (P < 0.05), indicating that collagen synthesis increases during asthma exacerbation. Additionally, PICP was found to significantly correlate with eosinophil counts in sputum (r = 0.539), indicating that eosinophils stimulate collagen turnover. Because eosinophils can produce TGF-beta, a potent stimulator of collagen synthesis, we immunocytochemically examined TGF-beta-positive cells in sputum. TGF-beta-positive cells significantly correlated with eosinophil counts (r = 0.811) and PICP (r = 0.569), suggesting that TGF-beta released from eosinophils is involved in collagen synthesis. CONCLUSIONS The results of the present study suggest that collagen synthesis is stimulated in asthmatic airways by eosinophils through TGF-beta, while collagen degradation is not, and that PICP in sputum can act as a new marker for airway inflammation in asthma.
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Affiliation(s)
- A Nomura
- Department of Pulmonary Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Ibaraki, Japan
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Abstract
BACKGROUND Sialyl Lewis X-i antigen has been used as a diagnostic tool for lung adenocarcinoma. However, serum levels of the antigen are also raised in some patients with idiopathic pulmonary fibrosis (IPF) without coexistent malignancy. Expression of the antigen in serum samples of patients with lung adenocarcinoma was evaluated and compared with that of patients with IPF by Western blotting in order to establish a specific laboratory test to differentiate lung adenocarcinoma from IPF. METHODS The pattern of antigen expression in serum samples from 23 patients with either lung adenocarcinoma or non-malignant lung disease in whom serum levels of sialyl Lewis X-i antigen (>50 U/ml) were significantly increased was studied by Western blotting. RESULTS Thirteen of the 14 serum samples from patients with lung adenocarcinoma had a molecular weight band at 120 or 130 kD, while five of the six patients with IPF had two or three bands at <97.4 kD. The pattern of antigen expression was apparently different between the two diseases. The sensitivity, specificity, positive likelihood ratio, and negative likelihood ratio of this test in 20 patients with lung adenocarcinoma and IPF were 92.9%, 83.3%, 5.57, and 0.09, respectively. CONCLUSIONS Western blotting analysis of serum samples from patients with raised levels of sialyl Lewis X-i antigen provides some clinical information for a differential diagnosis between lung adenocarcinoma and IPF.
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Japan.
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Matsuno Y, Watanabe K, Satoh H, Yamashita YT, Sekizawa K. Thenar metastasis from lung cancer. Eur J Cancer Care (Engl) 2002; 11:61-2. [PMID: 11966836] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Abstract
We report an unusual occurrence of skin metastasis to the thenar eminence. Skin metastasis reflects the progression of the primary malignancy. Biopsy should be performed from the skin lesions, even those located at uncommon sites, for patients who have a history of uncontrolled lung cancer.
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Affiliation(s)
- Y Matsuno
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki 305-8575, Japan
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29
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Sakamoto T, Hirano K, Morishima Y, Masuyama K, Ishii Y, Nomura A, Uchida Y, Ohtsuka M, Sekizawa K. Maintenance of the differentiated type II cell characteristics by culture on an acellular human amnion membrane. In Vitro Cell Dev Biol Anim 2002. [PMID: 11669280 DOI: 10.1290/1071-2690(2001)037<0471: motdti>2.0.co; 2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
We have developed a Culture system for guinea pig alveolar type II cells using an epithelium-denuded human amnion membrane as a substratum. The differentiated morphology was maintained for 3 wk by both air-interface feeding and immersion feeding when type II cells were cultured on the basement membrane side of the amnion with fibroblasts on the opposite side (coculture). Functionally high levels of surfactant protein B (SP-B) and C (SP-C) messenger ribonucleic acids (mRNAs) were expressed even after the 3-wk cultivation and surfactant protein A mRNA was detected on day 10 of the culture. The differentiation was also maintained when fibroblasts were cultured on lower chambers of the culture plates (separate culture). In contrast, culture of type II cells without fibroblasts (monoculture) could not preserve the mature morphology. When the monoculture was supplemented with keratinocyte growth factor or hepatocyte growth factor, a monolayer of rather cuboidal type II cells with apical microvilli was maintained. However, the percent area of lamellar bodies in these cells was significantly less than that in freshly isolated type II cells, and mRNA expressions of SP-B and SP-C were also considerably suppressed. These findings suggest that other growth factors or combinations of these factors are necessary for the maintenance of the differentiated phenotype. As substratum, a permeable collagen membrane or a thin gel layer of Engelbreth-Holm-Swarm mouse sarcoma extracts did not preserve the mature characteristics. This culture system using an acellular human amnion membrane may provide novel models for research in type II cells.
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Affiliation(s)
- T Sakamoto
- Department of Pulmonary Medicine, Institute of Clinical Medicine, University of Tsukuba, Ibarakii, Japan.
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30
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Li JQ, Jia YX, Yamaya M, Arai H, Ohrui T, Sekizawa K, Sasaki H. Neurochemical regulation of cough response to capsaicin in guinea-pigs. Auton Autacoid Pharmacol 2002; 22:57-63. [PMID: 12423427 DOI: 10.1046/j.1474-8673.2002.00242.x] [Citation(s) in RCA: 9] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
1. Although monumental efforts have been made to define the action sites of cough, the importance of neurotransmitter systems in the cough reflex has received limited attention. We studied the roles for four major neurotransmitters [acetylcholine, histamine, serotonin (5-hydroxytryptamine, 5-HT) and dopamine] in the modulation of the cough reflex. 2. Atropine (muscarinic cholinergic blocking agent), pyrilamine maleate (PM, histamine H1 blocker), cimetidine (histamine H2 blocker), 8-hydroxy-2-(di-n-propylamino)-tetralin (8-OH-DPAT, specific 5-HT1A receptor agonist) and SCH-23390 (selective dopamine D1 receptor antagonist) were examined on the cough response to inhaled capsaicin in conscious guinea-pigs. 3. All the drugs significantly decreased the number of capsaicin-induced coughs in a dose-dependent manner. To compare the sensitivity of these drugs on cough response, we calculated the effective doses for 50% inhibition of cough (ED50) when the animals were exposed to 3 x 10-4 m capsaicin. The ED50 values were 0.03 microm kg-1 for atropine, 0.2 microm kg-1 for 8-OH-DPAT, 6.2 microm kg-1 for SCH-23390, 8.5 microm kg-1 for PM and 13.9 microm kg-1 for cimetidine. 4. These findings indicated that all these four neurotransmitters may be involved in the regulation of the cough reflex. Multiple changes of these neurotransmitters in disorders of the central nervous system might synergically affect the cough reflex.
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Affiliation(s)
- J Q Li
- Department of Geriatric and Respiratory Medicine, Tohoku University School of Medicine, Sendai 980-8574, Japan
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31
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Sekizawa K. [Pathophysiology of bronchial asthma--special reference to the role of airway epithelial cells]. Masui 2001; 50 Suppl:S40-4. [PMID: 11871102] [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: 02/23/2023]
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32
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Hashimoto K, Ishii Y, Uchida Y, Kimura T, Masuyama K, Morishima Y, Hirano K, Nomura A, Sakamoto T, Takano H, Sagai M, Sekizawa K. Exposure to diesel exhaust exacerbates allergen-induced airway responses in guinea pigs. Am J Respir Crit Care Med 2001; 164:1957-63. [PMID: 11734452 DOI: 10.1164/ajrccm.164.10.2011070] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.3] [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: 11/16/2022] Open
Abstract
Diesel exhaust (DE) is a major air pollutant in urban areas. To clarify the effects of DE on the exacerbation of asthma, guinea pigs were exposed 12 h daily to 3 mg/m(3) DE or air for 8 wk with or without sensitization to ovalbumin (OVA). In the DE-exposed sensitized animals, both immediate (IAR) and late (LAR) airway responses were enhanced after the inhalation challenge by OVA, compared with the DE-unexposed sensitized animals. Mucus was greatly accumulated in the airways of DE-exposed sensitized animals during IAR. The number of eosinophils and level of sialic acid concentration in bronchial lavage fluids were also significantly higher in the DE-exposed sensitized animals than in the DE-unexposed control animals. During LAR, intercellular spaces of the bronchial epithelium became enlarged in the DE-exposed sensitized animals, showing infiltration by numerous eosinophils. Albumin concentration was significantly higher in the bronchial lavage fluids from the DE-exposed sensitized animals than in those from the DE-unexposed control animals. These results suggest that exposure to DE enhances mucus hypersecretion and eosinophilic inflammation during IAR. DE exposure also increases airway permeability and airway inflammation during LAR. Thus, DE exposure exacerbates allergen-induced airway responses in guinea pigs.
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Affiliation(s)
- K Hashimoto
- Department of Respiratory Medicine, University of Tsukuba, Ibaraki, Japan
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33
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Abstract
Cardio- and cerebrovascular diseases (CCVD) and cancer are the leading causes of death for humans. The aim of this study was to demonstrate clinicopathological features of lung cancer patients with CCVD. Nine hundred and sixty-six patients with lung cancer were consecutively admitted to our division over a 24-year period. Among them, 254 (26.3%) patients were diagnosed as having CCVD based on medical records. One hundred and ninety-one were men and 143 were 70 years of age or older. There was a difference in smoking habit (p=0.0029) and 30 pack year or more history of smoking (p<0.0001) between lung cancer patients with or without CCVD. Among the 254 patients, 97 patients had stage IA-IIIA disease, however, 27 patients received chest irradiation or supportive care because of coexistence of CCVD. In 157 patients with locally advanced or metastatic disease, 58 patients had less intensive therapy. In multivariate analysis, existence of CCVD in patients with non-small cell lung cancer (NSCLC) was proven to be a prognostic factor (p=0.0466). Our results imply that existing CCVD do adversely affect the outcome of NSCLC. When we decide whether or not to offer an intensive therapy which may increase treatment-related mortality, patients' medical condition including CCVD should be taken into consideration.
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Affiliation(s)
- K Kurishima
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
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Morishima H, Sekizawa K. [Physiopathology and management of the aged--chronic coughs of aged patients]. Nihon Jibiinkoka Gakkai Kaiho 2001; 104:1104-7. [PMID: 11852860] [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: 02/23/2023]
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35
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Abstract
Metastatic involvement of the peritoneum is not a very rare autopsy finding. Clinically, however, peritonitis carcinomatosis from a lung cancer is infrequently encountered and the pattern of the metastasis has not been studied. A total of 1041 patients with lung cancer who were admitted to our division over a 26-year period were retrospectively analyzed. Twelve (1.2%) of the 1041 patients with advanced lung cancer developed peritoneal carcinomatosis in their clinical courses. The incidence of peritoneal carcinomatosis was high in patients with large cell carcinoma and adenocarcinoma. Six and 9 of the 12 patients had metastases in intra-abdominal sites and pleural seeding, respectively. The median survival time from the diagnosis of peritoneal carcinomatosis was 2 months. Ascites accompanying metastasis to abdominal organs and pleural seeding in a patient with a known lung cancer would be regarded as a metastasis.
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki 305-8575, Japan.
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36
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Abstract
Splenic metastasis from a lung cancer is infrequently noted, however, the pattern of the metastasis has not been studied, thus we conducted a retrospective study. Twelve of the consecutive 997 patients with lung cancer, who were admitted to our division, developed splenic metastasis. The pattern of splenic metastasis involved solitary nodule in 7 patients (58.3%); multiple nodules in 4, and microscopic metastasis in 1. All of the 12 patients had other abdominal organ metastasis. Splenic mass accompanying metastasis to other abdominal organs in a patient with a known lung cancer should be regarded as a metastasis.
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki, 305-8575, Japan.
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Hirano K, Sakamoto T, Uchida Y, Morishima Y, Masuyama K, Ishii Y, Nomura A, Ohtsuka M, Sekizawa K. Tissue inhibitor of metalloproteinases-2 gene polymorphisms in chronic obstructive pulmonary disease. Eur Respir J 2001; 18:748-52. [PMID: 11757622 DOI: 10.1183/09031936.01.00102101] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.9] [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: 12/30/2022]
Abstract
Proteinase/antiproteinase imbalance is the most widely accepted theory for development of chronic obstructive pulmonary disease (COPD). Mutations of tissue inhibitor of metalloproteinases-2 (TIMP-2) that downregulate its activity may increase the activities of matrix metalloproteinases and result in the degradation of the lung matrix. Polymorphisms of the TIMP-2 gene were investigated in 88 COPD patients and 40 control subjects. The variations were examined by single-strand conformational polymorphism analysis followed by sequencing. Two polymorphisms were identified, +853 GIA and -418 G/C nucleotide substitutions. There was a significant deviation in the genotypic frequencies at +853 and the allele frequencies for G were significantly higher in the COPD patient group than in the control group. For locus -418, the allele frequencies for C in the COPD patient group also tended to be higher than those in the control group. The +853 G/A nucleotide substitution was a silent variant. The -418 G/C substitution was located in the consensus sequence for the Sp1 binding site. These polymorphisms may be associated with the development of chronic obstructive pulmonary disease, decreasing the transcription and stability of the messenger ribonucleic acid, and available as genetic markers of susceptibility to the disease.
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Affiliation(s)
- K Hirano
- Dept of Pulmonary Medicine, Institute of Clinical Medicine, University of Tsukuba, Ibaraki, Japan
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38
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Satoh H, Sekizawa K. Chemotherapy for non-small-cell lung cancer. Lancet 2001; 358:1270-1; author reply 1271-2. [PMID: 11675089 DOI: 10.1016/s0140-6736(01)06362-0] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Abstract
STUDY OBJECTIVES To investigate whether erythromycin therapy lowers the frequency of the common cold and subsequent exacerbation in patients with COPD. DESIGN Prospective, randomized, controlled, but not blinded, trial. PATIENTS One hundred nine patients with COPD were enrolled into the study. Patients were randomly assigned to erythromycin therapy or to no active treatment in September 1997. Patients then were observed for 12 months, starting in October, during which time the risk and frequency of catching common colds and COPD exacerbations were investigated. Fifty-five patients received erythromycin at study entry (erythromycin group). The remaining 54 patients received no active treatment (control group). MEASUREMENTS AND RESULTS The mean (+/- SE) number of common colds for 12 months was significantly lower in the erythromycin group than in the control group (1.24 +/- 0.07 vs 4.54 +/- 0.02, respectively, per person; p = 0.0002). Forty-one patients (76%) in the control group experienced common colds more than once, compared to 7 patients (13%) in the erythromycin group. The relative risk of developing two or more common colds in the control group compared with that in the erythromycin group was 9.26 (95% confidence interval [CI], 3.92 to 31.74; p = 0.0001). Thirty patients (56%) in the control group and 6 patients (11%) in the erythromycin group had one or more exacerbations. The relative risk of experiencing an exacerbation in the control group compared with that in the erythromycin group was 4.71 (95% CI, 1.53 to 14.5; p = 0.007). Significantly more patients were hospitalized due to exacerbations in the control group than in the erythromycin group (p = 0.0007). CONCLUSION Erythromycin therapy has beneficial effects on the prevention of exacerbations in COPD patients.
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Affiliation(s)
- T Suzuki
- Department of Geriatric and Respiratory Medicine, Tohoku University School of Medicine, Sendai, Japan
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40
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Sakamoto T, Hirano K, Morishima Y, Masuyama K, Ishii Y, Nomura A, Uchida Y, Ohtsuka M, Sekizawa K. Maintenance of the differentiated type II cell characteristics by culture on an acellular human amnion membrane. In Vitro Cell Dev Biol Anim 2001; 37:471-9. [PMID: 11669280 DOI: 10.1290/1071-2690(2001)037<0471:motdti>2.0.co;2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [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: 01/02/2023]
Abstract
We have developed a Culture system for guinea pig alveolar type II cells using an epithelium-denuded human amnion membrane as a substratum. The differentiated morphology was maintained for 3 wk by both air-interface feeding and immersion feeding when type II cells were cultured on the basement membrane side of the amnion with fibroblasts on the opposite side (coculture). Functionally high levels of surfactant protein B (SP-B) and C (SP-C) messenger ribonucleic acids (mRNAs) were expressed even after the 3-wk cultivation and surfactant protein A mRNA was detected on day 10 of the culture. The differentiation was also maintained when fibroblasts were cultured on lower chambers of the culture plates (separate culture). In contrast, culture of type II cells without fibroblasts (monoculture) could not preserve the mature morphology. When the monoculture was supplemented with keratinocyte growth factor or hepatocyte growth factor, a monolayer of rather cuboidal type II cells with apical microvilli was maintained. However, the percent area of lamellar bodies in these cells was significantly less than that in freshly isolated type II cells, and mRNA expressions of SP-B and SP-C were also considerably suppressed. These findings suggest that other growth factors or combinations of these factors are necessary for the maintenance of the differentiated phenotype. As substratum, a permeable collagen membrane or a thin gel layer of Engelbreth-Holm-Swarm mouse sarcoma extracts did not preserve the mature characteristics. This culture system using an acellular human amnion membrane may provide novel models for research in type II cells.
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Affiliation(s)
- T Sakamoto
- Department of Pulmonary Medicine, Institute of Clinical Medicine, University of Tsukuba, Ibarakii, Japan.
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Sumi M, Satoh H, Yamashita YT, Ohtsuka M, Sekizawa K. Improving the quality of discharge summaries. CMAJ 2001; 165:16. [PMID: 11468948 PMCID: PMC81236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023] Open
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45
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Abstract
Clinicopathological features of middle-aged lung cancer patients were investigated in 1016 consecutive patients. Among them, 22.8% of patients were in their forties and fifties. The preponderance of adenocarcinomas and the higher female/male ratio in middle-aged groups compared with the older group were findings similar to those observed in younger patients. Smoking habit increased according to the age groups. Middle-aged patients had a propensity for advanced stage, however, survival was not inferior to younger patients. Middle-aged patients consisted of two different groups of patients, whose characteristics were similar to those observed in either younger or elderly patients.
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Affiliation(s)
- K Kurishima
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki, 305-8575, Japan
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Satoh H, Ishikawa H, Yamashita YT, Kurishima K, Ohtsuka M, Sekizawa K. Patterns of brain metastasis in lung cancer. Oncol Rep 2001; 8:781-3. [PMID: 11410783 DOI: 10.3892/or.8.4.781] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Brain metastasis as the only site of spread in lung cancer was studied. Ninety-two (13.1%) of 701 lung cancer patients had brain metastasis at the time of diagnosis. Eighteen and 16 patients had small primary lesion and were N0-1 disease, respectively. Thirty-two patients had sole brain metastasis. Patients with sole brain metastasis had more favorable survival than patients with other metastatic sites (p=0.0165). Brain metastasis may occur even with small primary lesion and/or without regional lymph node involvement. Well-planned surgery or stereotactic radiosurgery will result in enhanced survival.
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Affiliation(s)
- H Satoh
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-city, Ibaraki 305-8575, Japan.
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47
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Suzuki T, Yamaya M, Sekizawa K, Hosoda M, Yamada N, Ishizuka S, Nakayama K, Yanai M, Numazaki Y, Sasaki H. Bafilomycin A(1) inhibits rhinovirus infection in human airway epithelium: effects on endosome and ICAM-1. Am J Physiol Lung Cell Mol Physiol 2001; 280:L1115-27. [PMID: 11350790 DOI: 10.1152/ajprenal.2001.280.6.f1115] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [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: 11/22/2022] Open
Abstract
To examine the effects of bafilomycin A(1), a blocker of vacuolar H(+)-ATPase, on rhinovirus (RV) infection in the airway epithelium, primary cultures of human tracheal epithelial cells were infected with RV14. Viral infection was confirmed by showing that viral RNA in the infected cells and the viral titers in the supernatants of infected cells increased with time. RV14 infection upregulated the production of cytokines and mRNA of intercellular adhesion molecule (ICAM)-1 in epithelial cells. Bafilomycin A(1) reduced the viral titers of RV14 and inhibited the production of cytokines and ICAM-1 before and after RV14 infection. Bafilomycin A(1) reduced susceptibility of epithelial cells to RV14 infection. RV14 increased activated nuclear factor-kappaB in the cells, and bafilomycin A(1) reduced the activated nuclear factor-kappaB. Bafilomycin A(1) decreased the number of acidic endosomes in the epithelial cells. These results suggest that bafilomycin A(1) may inhibit infection by RV14 by not only blocking RV RNA entry into the endosomes but also reducing ICAM-1 expression in the epithelial cells. Bafilomycin A(1) may therefore modulate airway inflammation after RV infection.
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Affiliation(s)
- T Suzuki
- Department of Geriatric and Respiratory Medicine, Tohoku University School of Medicine, Sendai 980-8574, Japan
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48
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Affiliation(s)
- T Ueno
- Division of Respiratory Medicine, Institute of Clinical Medicine, University of Tsukuba, Tsukuba-City, Japan
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49
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Satoh H, Yamashita YT, Ohtsuka M, Sekizawa K. Post-irradiation erythroderma. Clin Oncol (R Coll Radiol) 2001; 12:336. [PMID: 11315724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
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50
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