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Doi M, Maruyama Y, Kaneda A, Minamizaki M, Fukada M, Kanoya Y. Comprehensive end-of-life care practices for older patients with heart failure provided by specialized nurses: a qualitative study. BMC Geriatr 2023; 23:350. [PMID: 37277709 PMCID: PMC10240706 DOI: 10.1186/s12877-023-04050-6] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2023] [Accepted: 05/18/2023] [Indexed: 06/07/2023] Open
Abstract
BACKGROUND The context of end-of-life care for older heart failure patients with a complex clinical course provided by certified nurse specialists in gerontology (GCNSs) and Certified nurses in chronic heart failure (CNCHFs) is unclear; therefore, this study aims to describe comprehensive nursing practice for older patients with heart failure at their end of life. METHODS This study adopts a qualitative descriptive design using content analysis. Five GCNSs, and five CNCHFs were interviewed using a web app from January to March 2022. RESULTS Thirteen categories of nursing practices for older patients with heart failure were generated: (1) Provide thorough acute care by a multidisciplinary team to alleviate dyspnea, (2) Assess psychiatric symptoms and use a suitable environment to perform treatment, (3) Explain the progression of heart failure with the doctor, (4) Build a trusting relationship with the patient and family and implement advance care planning (ACP) early during the patient's recovery, (5) Involve multiple professions to help patients to achieve their desired life, (6) Perform ACP always in collaboration with multiple professionals, (7) Provide lifestyle guidance according to patients' feelings so that they can continue living at home after discharge from the hospital, (8) Provide palliative and acute care in parallel with multiple professions, (9) Achieve end-of-life care at home through multidisciplinary cooperation, (10) Provide basic nursing care to the patient and family until the moment of death, (11) Provide concurrent acute and palliative care as well as psychological support to alleviate physical and mental symptoms, (12) Share the patient's prognosis and future wishes with multiple professionals, and (13) Engage in ACP from early stages, through several conversations with patients and their families. CONCLUSIONS Specialized nurses provide acute care, palliative care, and psychological support to alleviate physical and mental symptoms throughout the different stages of chronic heart failure. In addition to nursing care by specialized nurses at each stage shown in this study, it is important to initiate ACP early in the end-of-life stage and to provide care for patients with multiple professionals.
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Affiliation(s)
- Mana Doi
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan.
- Tokyo Healthcare University, Chiba Faculty of Nursing, 1-1042-2 Kaijincho-Nishi, Funabashi, Chiba, 273-8710, Japan.
| | - Yukie Maruyama
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Akiko Kaneda
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Maya Minamizaki
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Masami Fukada
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan
| | - Yuka Kanoya
- Department of Gerontological Nursing, Nursing Course, School of Medicine, Yokohama City University, 3-9 Fukuura Kanazawa-Ku, Yokohama, Kanagawa, 236-0004, Japan
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Keith LM, Sugiyama LS, Brill E, Adams BL, Fukada M, Hoffman KM, Ocenar J, Kawabata A, Kong AT, McKemy JM, Olmedo-Velarde A, Melzer MJ. First Report of Coffee Leaf Rust Caused by Hemileia vastatrix on Coffee ( Coffea arabica) in Hawaii. Plant Dis 2022; 106:761. [PMID: 34433320 DOI: 10.1094/pdis-05-21-1072-pdn] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Affiliation(s)
- L M Keith
- USDA Agricultural Research Service, Tropical Plant Genetic Resources and Disease Research Unit, Hilo, HI 96720
| | - L S Sugiyama
- USDA Agricultural Research Service, Tropical Plant Genetic Resources and Disease Research Unit, Hilo, HI 96720
| | - E Brill
- USDA Agricultural Research Service, Tropical Plant Genetic Resources and Disease Research Unit, Hilo, HI 96720
- Tropical Plant and Soil Sciences, University of Hawaii at Manoa, Hilo, HI 96720
| | - B L Adams
- Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI 96822
| | - M Fukada
- Plant Industry Division, Hawaii Department of Agriculture, Honolulu, HI 96814
| | - K M Hoffman
- Plant Industry Division, Hawaii Department of Agriculture, Honolulu, HI 96814
| | - J Ocenar
- Plant Industry Division, Hawaii Department of Agriculture, Honolulu, HI 96814
| | - A Kawabata
- Tropical Plant and Soil Sciences, University of Hawaii at Manoa, Kealakekua, HI 96750
| | - A T Kong
- Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI 96822
| | - J M McKemy
- USDA-APHIS-PPQ National Identification Services, Beltsville, MD 20705
| | - A Olmedo-Velarde
- Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI 96822
| | - M J Melzer
- Plant and Environmental Protection Sciences, University of Hawaii at Manoa, Honolulu, HI 96822
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Nagatsu K, Suzuki H, Fukada M, Ito T, Ichinose J, Honda Y, Minegishi K, Higashi T, Zhang MR. Cyclotron production of 225Ac from an electroplated 226Ra target. Eur J Nucl Med Mol Imaging 2021; 49:279-289. [PMID: 34196752 PMCID: PMC8712309 DOI: 10.1007/s00259-021-05460-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 02/24/2021] [Accepted: 06/09/2021] [Indexed: 11/25/2022]
Abstract
Purpose We demonstrate cyclotron production of high-quality 225Ac using an electroplated 226Ra target. Methods 226Ra was extracted from legacy Ra sources using a chelating resin. Subsequent ion-exchange purification gave pure 226Ra with a certain amount of carrier Ba. The radium target was prepared by electroplating. We successfully deposited about 37 MBq of 226Ra on a target box. Maximum activation was achieved using 15.6 MeV protons on the target at 20 µA for 5 h. Two functional resins with various concentrations of nitric acid purified 225Ac and recovered 226Ra. Cooling the intermediate 225Ac for 2–3 weeks decayed the major byproduct of 226Ac and increased the radionuclidic purity of 225Ac. Repeating the same separation protocol provided high-quality 225Ac. Results We obtained 225Ac at a yield of about 2.4 MBq at the end of bombardment (EOB), and the subsequent initial purification gave 1.7 MBq of 225Ac with 226Ac/225Ac ratio of < 3% at 4 days from EOB. Additional cooling time coupled with the separation procedure (secondary purification) effectively increased the 225Ac (4n + 1 series) radionuclidic purity up to 99 + %. The recovered 225Ac had a similar identification to commercially available 225Ac originating from a 229Th/225Ac generator. Conclusion This procedure, which involves the 226Ra(p,2n)225Ac reaction and the appropriate purification, has the potential to be a major alternative pathway for 225Ac production because it can be performed in any facility with a compact cyclotron to address the increasing demand for 225Ac. Supplementary Information The online version contains supplementary material available at 10.1007/s00259-021-05460-7.
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Affiliation(s)
- Kotaro Nagatsu
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan.
| | - Hisashi Suzuki
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan
| | - Masami Fukada
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan
| | - Taku Ito
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan.,Theranostics Research Center, Nihon Medi-Physics, Co., Ltd., Chiba, Japan
| | - Jun Ichinose
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan.,Theranostics Research Center, Nihon Medi-Physics, Co., Ltd., Chiba, Japan
| | - Yoshio Honda
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan.,Theranostics Research Center, Nihon Medi-Physics, Co., Ltd., Chiba, Japan
| | - Katsuyuki Minegishi
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan
| | - Tatsuya Higashi
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum and Radiological Science and Technology, Chiba, Japan
| | - Ming-Rong Zhang
- Department of Advanced Nuclear Medicine Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage-Ku, Chiba, 263-8555, Japan
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Nagatsu K, Suzuki H, Matsumoto M, Fukada M, Minegishi K, Tsuji A, Higashi T, Zhang MR. A Production Challenge of Ac-225 from RaCO3 Target Activated by Vertical Beam. J Med Imaging Radiat Sci 2019. [DOI: 10.1016/j.jmir.2019.11.050] [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: 10/25/2022]
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Ohya T, Minegishi K, Suzuki H, Nagatsu K, Fukada M, Hanyu M, Zhang MR. Development of a remote purification apparatus with disposable evaporator for the routine production of high-quality 64Cu for clinical use. Appl Radiat Isot 2019; 146:127-132. [DOI: 10.1016/j.apradiso.2019.01.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/25/2019] [Accepted: 01/26/2019] [Indexed: 10/27/2022]
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Nagatsu K, Suzuki H, Matsumoto M, Fukada M, Minegishi K, Tsuji A, Higashi T, Zhang MR. A Production Challenge of Ac-225 from RaCO3 Target Activated by Vertical Beam. J Med Imaging Radiat Sci 2019. [DOI: 10.1016/j.jmir.2019.03.045] [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: 10/27/2022]
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Ohya T, Nagatsu K, Suzuki H, Fukada M, Minegishi K, Hanyu M, Zhang MR. Small-scale production of 67 Cu for a preclinical study via the 64 Ni(α, p) 67 Cu channel. Nucl Med Biol 2018; 59:56-60. [DOI: 10.1016/j.nucmedbio.2018.01.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 01/23/2018] [Accepted: 01/23/2018] [Indexed: 10/18/2022]
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Cui C, Hanyu M, Hatori A, Zhang Y, Xie L, Ohya T, Fukada M, Suzuki H, Nagatsu K, Jiang C, Luo R, Shao G, Zhang M, Wang F. Synthesis and evaluation of [ 64Cu]PSMA-617 targeted for prostate-specific membrane antigen in prostate cancer. Am J Nucl Med Mol Imaging 2017; 7:40-52. [PMID: 28533936 PMCID: PMC5435610] [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] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Accepted: 01/05/2017] [Indexed: 06/07/2023]
Abstract
We radiolabeled a ligand, PSMA-617, of prostate-specific membrane antigen (PSMA) with copper-64 (64Cu), to evaluate the metabolism, biodistribution, and potential of [64Cu]PSMA-617 for PET imaging of prostate cancer. [64Cu]PSMA-617 was synthesized by heating PSMA-617 with [64Cu]CuCl2 in buffer solution at 90°C for 5 min. In vitro uptake was determined in two cell lines of prostate cancer. In vivo regional distributions were determined in normal and tumor-bearing mice. High radiolabeling efficiency of 64Cu for PSMA-617 yielded [64Cu]PSMA-617 with >99% radiochemical purity. In vitro cellular uptake experiments demonstrated the specificity of [64Cu]PSMA-617 for PSMA-positive LNCaP cells. Biodistribution observations of normal mice revealed high uptake of radioactivity in the kidney and liver. PET with [64Cu]PSMA-617 visualized tumor areas implanted by PSMA-positive LNCaP cells in the mice. Two hours after the injection of [64Cu]PSMA-617 into mice, a radiolabeled metabolite was observed in the blood, liver, urine, and LNCaP tumor tissues. [64Cu]PSMA-617 was easily synthesized, and exhibited a favorable biodistribution in PSMA-positive tumors. Although this radioligand shows slow clearance for kidney and high liver uptake, change of its chelator moiety and easy radiolabeling may enable development of new 64Cu or 67Cu-labeled PSMA ligands for imaging and radiotherapy.
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Affiliation(s)
- Can Cui
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Masayuki Hanyu
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Akiko Hatori
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Yiding Zhang
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Lin Xie
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Tomoya Ohya
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Masami Fukada
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Hisashi Suzuki
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Kotaro Nagatsu
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Cuiping Jiang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Rui Luo
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Guoqiang Shao
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
| | - Mingrong Zhang
- Department of Radiopharmaceutics Development, National Institute of Radiological Sciences, National Institutes for Quantum and Radiological Science and TechnologyChiba, Japan
| | - Feng Wang
- Department of Nuclear Medicine, Nanjing First Hospital, Nanjing Medical UniversityNanjing, China
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Ohya T, Nagatsu K, Suzuki H, Fukada M, Minegishi K, Hanyu M, Fukumura T, Zhang MR. Efficient preparation of high-quality 64 Cu for routine use. Nucl Med Biol 2016; 43:685-691. [DOI: 10.1016/j.nucmedbio.2016.07.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2016] [Accepted: 07/27/2016] [Indexed: 11/16/2022]
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Minegishi K, Nagatsu K, Fukada M, Suzuki H, Ohya T, Zhang MR. Production of scandium-43 and -47 from a powdery calcium oxide target via the (nat/44)Ca(α,x)-channel. Appl Radiat Isot 2016; 116:8-12. [PMID: 27472825 DOI: 10.1016/j.apradiso.2016.07.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [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: 05/13/2016] [Revised: 07/12/2016] [Accepted: 07/19/2016] [Indexed: 11/29/2022]
Abstract
We produced (43)Sc and (47)Sc via the (nat/44)Ca(α,x)-channel using a vertical beam coupled with a ceramic target box. After activation, the powdery CaO target material was dissolved in HCl in the target box in situ and remotely recovered as a radio-Sc solution. The respective yields of (43)Sc and (47)Sc following isolation via a precipitation method with a typical 0.22µm sterile filter were 54.8MBq/µAh (1.48mCi/µAh) and 780kBq/µAh (21.1µCi/µAh) at the end of separation (approximately 1.5h from the EOB). In addition, we discuss the recycling of target Ca.
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Affiliation(s)
- Katsuyuki Minegishi
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan; Neos-Tech, Co., Ltd., Japan
| | - Kotaro Nagatsu
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan.
| | - Masami Fukada
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan
| | - Hisashi Suzuki
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan
| | - Tomoyuki Ohya
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan
| | - Ming-Rong Zhang
- Department of Radiopharmaceuticals Development, National Institutes for Quantum and Radiological Science and Technology (NIRS-QST), Japan
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Nagatsu K, Suzuki H, Fukada M, Minegishi K, Tsuji A, Fukumura T. An alumina ceramic target vessel for the remote production of metallic radionuclides by in situ target dissolution. Nucl Med Biol 2012; 39:1281-5. [PMID: 22727820 DOI: 10.1016/j.nucmedbio.2012.05.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2012] [Revised: 05/10/2012] [Accepted: 05/19/2012] [Indexed: 11/26/2022]
Abstract
INTRODUCTION As the use of metallic radionuclides increases, so does the demand for a simple production method. In this study, we demonstrated an in situ target processing concept for automated metallic radionuclide production without the use of any robotic device. METHODS An alumina ceramic vessel for a vertical irradiation system was designed and developed. The ceramic vessel was evaluated by the production of Zr-89 using an yttrium powder target. The irradiated Y was dissolved remotely in HCl in the ceramic vessel and transferred as a solution to a hotcell through a Teflon tube. The crude Zr-89 was then purified by an automated apparatus. The Zr-89 was eluted with 100 μL of oxalic acid (solution) as the final product. RESULTS The ceramic vessel gave a sufficient yield of Zr-89 (57±11MBq/μAh), showed good operability, and could be reused up to 10 times. With nominal irradiation (10μA×2h) in ~90 μL, the product (~940MBq) was obtained with >99.9% radionuclidic purity. CONCLUSION The combination of the ceramic vessel and vertical irradiation has great potential for the remote production of various metallic radionuclides.
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Affiliation(s)
- Kotaro Nagatsu
- Molecular Imaging Center, National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan.
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Fukada M, Saito T, Kume H, Wada T. Fabrication of lead-free piezoelectric (Na(0.5)K(0.5))NbO(3) ceramics by a modified solid-state reaction method. IEEE Trans Ultrason Ferroelectr Freq Control 2008; 55:988-993. [PMID: 18519200 DOI: 10.1109/tuffc.2008.744] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Sodium potassium niobate, (Na(0.5)K(0.5))NbO(3), fine powder has been successfully synthesized at the low temperature of 550 degrees C through a modified solid-state reaction method, in which urea [CO(NH(2))(2)] plays an important role. High-density (Na(0.5)K(0.5))NbO(3) ceramics could be obtained by conventional sintering of the synthesized (Na(0.5)K(0.5))NbO(3) fine powder with the addition of 0.03 mol% Co(3)O(4) as a sintering additive. The crystal structure, microstructure, and dielectric and piezoelectric properties were characterized. The (Na(0.5)K(0.5))NbO(3) ceramic showed a comparatively saturated P-E hysteresis loop. The (Na(0.5)K(0.5))NbO(3) ceramic also displayed piezoelectricity with a piezoelectric constant d(33) of 126 pC/N and a planar electromechanical coupling factor k(p) of 33%.
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Affiliation(s)
- M Fukada
- Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194, Japan
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Ukita M, Shi X, Higuchi T, Arkin Y, Fukada M. Study on the potential of farmland soils as non-point sources of nitrogen and phosphorus in Japan. Water Sci Technol 2006; 53:119-30. [PMID: 16594330 DOI: 10.2166/wst.2006.045] [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] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The amounts of N and P accumulated in farmland soils of 50 cm depth were equivalent to the amount of chemical fertilizer supplied for 50-70 years. The values of N/P of surface soils in farmlands were 1.0-4.3, lower than expected. The median diameter of soil particles in run-off waters was generally less than 10 microm. The mean values of particulate fractions over 1 microm and over 0.22 microm were 19% for N, 27% for P, and 39% for N, 64% for P respectively. Fine particles of soil containing concentrated phosphorus should be carefully monitored as potential sources related to eutrophication.
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Affiliation(s)
- M Ukita
- Department of Civil and Environmental Engineering, Faculty of Engineering, Yamaguchi University, Tokiwadai, Ube 755-8611, Japan.
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Takai T, Takahashi K, Akagawa-Chihara M, Fukada M, Yuuki T, Shibuya I, Okumura K, Ra C, Yokota T, Okumura Y. Production of humanized antibody against human high-affinity IgE receptor in a serum-free culture of CHO cells, and purification of the Fab fragments. Biosci Biotechnol Biochem 2001; 65:1082-9. [PMID: 11440121 DOI: 10.1271/bbb.65.1082] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [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: 11/08/2022]
Abstract
We describe the preparation of Fab fragments of a humanized anti-human high-affinity IgE receptor (Fc epsilonRIalpha) antibody potentially useful for treatment of IgE-mediated allergic diseases. IgE-binding capacities of sixteen combinations of light and heavy chains of four recombinant anti-Fc epsilonRIalpha antibodies, chimeric CRA2, humanized CRA2, chimeric CRA4, and humanized CRA4, were compared. A combination in which both chains were of humanized CRA2 had the highest activity. Stable transfectant clones of four kinds of host cells expressing recombinant antibodies were established. CHO-K1 cells were the most productive. Serum-free media suitable for culture of the stable CHO-transfectant clones were screened. The concentration of the humanized CRA2, which the most productive clone secreted into the chosen serum-free medium, was approximately 100 microg/ml. A procedure for the purification of the antibody, papain-digestion, and purification of Fab fragments was established. The highly purified humanized Fab fragments are suitable for use to examine their in vivo activity and immunogenicity in primates.
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Affiliation(s)
- T Takai
- Bioscience Research & Development Laboratory, Asahi Breweries, Ltd., Kitasoma-gun, Ibaraki, Japan
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Konishi T, Fukada M, Takeda M, Matsuzaki K, Furukawa H. [Partial sternotomy for off-pump coronary artery bypass grafting]. Kyobu Geka 2001; 54:279-82. [PMID: 11296417] [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: 02/19/2023]
Abstract
We performed off-pump coronary artery bypass grafting through a partial sternotomy. The sternum was spit like C-shape configuration from the second intercostal space down to the xiphoid junction. The left internal mammary arteries were mobilized and anastomosed to the left anterior descending arteries. Saphenous veins were grafted between the ascending aorta and the right coronary arteries or diagonal branches. After the surgery, excellent stability of the thorax with minimized incisions enhanced the early recovery. We believe that partial sternotomy approach may be useful in some cases of off-pump CABG.
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Affiliation(s)
- T Konishi
- Department of Cardiovascular Surgery, Yokohama Rosai Hospital, Yokohama, Japan
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Fukada M, Watakabe I, Yuasa-Kawada J, Kawachi H, Kuroiwa A, Matsuda Y, Noda M. Molecular characterization of CRMP5, a novel member of the collapsin response mediator protein family. J Biol Chem 2000; 275:37957-65. [PMID: 10956643 DOI: 10.1074/jbc.m003277200] [Citation(s) in RCA: 106] [Impact Index Per Article: 4.4] [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: 02/04/2023] Open
Abstract
The CRMP (collapsin response mediator protein) family is thought to play key roles in growth cone guidance during neural development. The four members (CRMP1-4) identified to date have been demonstrated to form hetero-multimeric structures through mutual associations. In this study, we cloned a novel member of this family, which we call CRMP5, by the yeast two-hybrid method. This protein shares relatively low amino acid identity with the other CRMP members (49-50%) and also with dihydropyrimidinase (51%), whereas CRMP1-4 exhibit higher identity with each other (68-75%), suggesting that CRMP5 might be categorized into a third subfamily. The mouse CRMP5 gene was located at chromosome 5 B1. Northern blot and in situ hybridization analyses indicated that CRMP5 is expressed throughout the nervous system similarly to the other members (especially CRMP1 and CRMP4) with the expression peak in the first postnatal week. Association experiments using the yeast two-hybrid method and co-immunoprecipitation showed that CRMP5 interacts with dihydropyrimidinase and all the CRMPs including itself, except for CRMP1, although the expression profile almost overlaps with that of CRMP1 during development. These results suggest that CRMP complexes in the developing nervous system are classifiable into two populations that contain either CRMP1 or CRMP5. This indicates that different complexes may have distinct functions in shaping the neural networks.
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Affiliation(s)
- M Fukada
- Division of Molecular Neurobiology, National Institute for Basic Biology, and Department of Molecular Biomechanics, Graduate University for Advanced Studies, Okazaki 444-8585, Japan
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17
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Nakaya-Onishi M, Suzuki A, Okamoto N, Fukada M. Observations on time course changes of the cherry red spot in a patient with Tay-Sachs disease. Br J Ophthalmol 2000; 84:1320-1. [PMID: 11203170 PMCID: PMC1723317 DOI: 10.1136/bjo.84.11.1318c] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [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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18
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Chakravortty D, Kato Y, Koide N, Sugiyama T, Kawai M, Fukada M, Yoshida T, Yokochi T. Extracellular matrix components prevent lipopolysaccharide-induced bovine arterial endothelial cell injury by inhibiting p38 mitogen-activated protein kinase. Thromb Res 2000; 98:187-93. [PMID: 10713320 DOI: 10.1016/s0049-3848(99)00226-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [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
The effect of extracellular matrix components on lipopolysaccharide-induced vascular endothelial cell injury was studied by using lipopolysaccharide-susceptible bovine aortic endothelial cells. For evaluation of lipopolysaccharide-induced injury, we estimated DNA synthesis and cell detachment of bovine aortic endothelial cells in cultures using extracellular matrix components-coated plastic dishes. Among extracellular matrix components, matrigel almost completely inhibited the reduction in DNA synthesis and the enhancement in cell detachment of bovine aortic endothelial cells in cultures with lipopolysaccharide. The lipopolysaccharide-induced injury was also inhibited by coating with type IV collagen, gelatin, fibronectin, laminin, vitronectin, and heparin sulphate proteoglycan. Extracellular matrix components capable of preventing lipopolysaccharide-induced bovine aortic endothelial cells injury coincidentally inhibited the phosphorylation of p38 mitogen-activated protein kinase in lipopolysaccharide-treated bovine aortic endothelial cells. SB203580, a specific inhibitor of p38 mitogen-activated protein kinase, also prevented the reduction in DNA synthesis and the enhancement in cell detachment of bovine aortic endothelial cells in cultures with lipopolysaccharide. It was therefore suggested that extracellular matrix components might protect bovine aortic endothelial cells from lipopolysaccharide-induced injury through inhibiting the activation of p38 mitogen-activated protein kinase.
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Affiliation(s)
- D Chakravortty
- Department of Microbiology and Immunology, and Division of Bacterial Toxin, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Aichi, Japan
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19
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Chakravortty D, Koide N, Kato Y, Sugiyama T, Kawai M, Fukada M, Yoshida T, Yokochi T. Cytoskeletal alterations in lipopolysaccharide-induced bovine vascular endothelial cell injury and its prevention by sodium arsenite. Clin Diagn Lab Immunol 2000; 7:218-25. [PMID: 10702496 PMCID: PMC95852 DOI: 10.1128/cdli.7.2.218-225.2000] [Citation(s) in RCA: 20] [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] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Morphological changes, especially cytoskeletal alterations, in lipopolysaccharide (LPS)-induced vascular endothelial cell injury were studied by using LPS-susceptible bovine aortic endothelial cells (BAEC). BAEC in cultures with LPS showed cell rounding, shrinking, and intercellular gap formation. In those cells, LPS caused the disorganization of actin, tubulin, and vimentin. LPS also induced a reduction in the F-actin pool and an elevation in the G-actin pool. Cytoskeletal disorganization affected transendothelial permeability across the endothelial monolayer. Pretreatment of BAEC with sodium arsenite (SA) prevented alterations in LPS-induced BAEC injury. However, posttreatment with SA had no protective effect on them. SA upregulated the expression of heat shock protein in the presence of LPS. The role of SA in prevention of LPS-induced BAEC injury is discussed.
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Affiliation(s)
- D Chakravortty
- Department of Microbiology and Immunology and Division of Bacterial Toxin, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Aichi 480-1195, Japan
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20
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Abstract
Photic Feedback treatment of a patient diagnosed with Miller Fisher syndrome has resulted in the rapid and permanent remission of symptoms. During Photic Feedback treatment, the CD20 appeared to be slightly increased. This may have been associated with changes in humoral immunity. The present clinical observation of a single patient suggests that Photic Feedback treatment should be investigated as a possible adjunct therapy for patients who suffer from polyneuropathies, such as Miller Fisher syndrome, within a carefully controlled clinical trial.
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Affiliation(s)
- T Kamei
- Shimane Institute of Health Science, Izumo, Japan.
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21
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Yokochi T, Narita K, Morikawa A, Takahashi K, Kato Y, Sugiyama T, Koide N, Kawai M, Fukada M, Yoshida T. Morphological change in Pseudomonas aeruginosa following antibiotic treatment of experimental infection in mice and its relation to susceptibility to phagocytosis and to release of endotoxin. Antimicrob Agents Chemother 2000; 44:205-6. [PMID: 10602751 PMCID: PMC89656 DOI: 10.1128/aac.44.1.205-206.2000] [Citation(s) in RCA: 11] [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] [Indexed: 11/20/2022] Open
Abstract
The relationship between morphological changes in Pseudomonas aeruginosa following antibiotic treatment of experimental infection in mice, susceptibility to phagocytosis, and release of endotoxin was studied. The intraperitoneal administration of P. aeruginosa with imipenem or ceftazidime into mice induced morphological changes in the cells 2 h after injection. Round P. aeruginosa cells with imipenem treatment became susceptible to phagocytosis by peritoneal cells, whereas long filamentous cells with ceftazidime treatment were hardly phagocytized by peritoneal cells. The morphological changes also affected the plasma endotoxin level in the circulation.
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Affiliation(s)
- T Yokochi
- Department of Microbiology and Immunology and Division of Bacterial Toxin, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Aichi 480-1195, Japan.
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22
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Yoshida T, Fukada M, Koide N, Ikeda H, Sugiyama T, Kato Y, Ishikawa N, Yokochi T. Primary cultures of human endothelial cells are susceptible to low doses of Shiga toxins and undergo apoptosis. J Infect Dis 1999; 180:2048-52. [PMID: 10558968 DOI: 10.1086/315116] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.1] [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: 11/03/2022] Open
Abstract
Various endothelial cells, with the exception of those from human microvasculatures, have been known to resist Shiga toxins (Stxs) in vitro. However, freshly prepared primary cultures of human endothelial cells from the umbilical vein and artery and the saphenous vein were shown to be killed by a very low dose of Stxs. This cytotoxicity of Stxs involves apoptosis, which seems to be caused by a mechanism distinct from the well-known action of Stxs to inhibit protein synthesis, since the blockade of protein synthesis by cycloheximide could not induce apoptosis or enhance the effect of Stxs. Passaged human endothelial cells have been found to be highly resistant to Stxs, which is consistent with previous reports, and not to show any evidence of apoptosis even when they are killed by a high dose of Stxs.
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Affiliation(s)
- T Yoshida
- Department of Microbiology, Research Center for Infectious Diseases, Aichi Medical University, Yazako, Nagakute, Japan.
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23
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Shimizu N, Imamura A, Daimaru O, Mihara H, Kato Y, Kato R, Oguri T, Fukada M, Yokochi T, Yoshikawa K, Komatsu H, Ueda R, Nitta M. Distribution of JC virus DNA in peripheral blood lymphocytes of hematological disease cases. Intern Med 1999; 38:932-7. [PMID: 10628929 DOI: 10.2169/internalmedicine.38.932] [Citation(s) in RCA: 7] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE The distribution of JC virus DNA in peripheral blood was surveyed by the polymerase chain reaction using the late genes as markers. RESULTS Six out of 52 cases of hematological diseases and one systemic lupus erythematosus case out of 17 cases were positive for JCV DNA. After separation into B and T lymphocytes by a cell sorter, JCV DNA was found in both cell types prepared from adult T cell leukemia and PML patients. CONCLUSION Only 1 or 2 copies of JCV genome were calculated to exist in a cell based on the time course analysis of PCR. Only B lymphocytes and glial brain cells are known to produce nuclear factors which support the growth of the virus. The result that B lymphocytes contained a copy number of JCV genome similar to T lymphocytes suggests that there is some barrier to viral growth in susceptible B lymphocytes, and that the growth of JCV is different from that of other virulent viruses.
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Affiliation(s)
- N Shimizu
- Second Department of Internal Medicine, Aichi Medical University, Nagakute, Aichi-gun
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24
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Takahashi K, Kato Y, Sugiyama T, Koide N, Kawai M, Fukada M, Yoshida T, Yokochi T. Production of murine collagen-induced arthritis using Klebsiella pneumoniae O3 lipopolysaccharide as a potent immunological adjuvant. Microbiol Immunol 1999; 43:795-801. [PMID: 10524798 DOI: 10.1111/j.1348-0421.1999.tb02472.x] [Citation(s) in RCA: 10] [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: 11/28/2022]
Abstract
Collagen-induced arthritis (CIA) was produced in mice with non H-2q and H-2r haplotypes by repeated immunization of porcine type-II collagen (CII) together with Klebsiella O3 lipopolysaccharide (KO3 LPS) as an immunological adjuvant. Histological changes that appeared in joints of repeatedly immunized mice were characterized by destruction of normal joint structure, synovial hyperplasia with proliferation of synovial cells, and infiltration of inflammatory cells. No such lesions were produced in mice receiving repeated injections of CII alone or KO3 LPS alone. Development of the humoral antibody and the delayed-type hypersensitivity to CII was exclusively found in mice immunized with the mixture of CII and KO3 LPS. It was therefore suggested that arthritis lesions induced by repeated immunization with the mixture of CII and KO3 LPS might be caused by an autoimmune mechanism, and that the experimental model might be useful for characterization of human rheumatoid arthritis (RA).
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MESH Headings
- Adjuvants, Immunologic
- Animals
- Arthritis, Experimental/chemically induced
- Arthritis, Experimental/immunology
- Arthritis, Experimental/pathology
- Arthritis, Rheumatoid/chemically induced
- Arthritis, Rheumatoid/immunology
- Arthritis, Rheumatoid/pathology
- Collagen
- Humans
- Hypersensitivity, Delayed
- Joints/pathology
- Klebsiella pneumoniae/immunology
- Lipopolysaccharides/immunology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C3H
- Mice, Inbred C57BL
- Swine
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Affiliation(s)
- K Takahashi
- Department of Microbiology and Immunology, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Japan
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25
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Chakravortty D, Kato Y, Koide N, Sugiyama T, Kawai M, Fukada M, Yoshida T, Yokochi T. Production of tissue factor in CD14-expressing human umbilical vein endothelial cells by lipopolysaccharide. FEMS Microbiol Lett 1999; 178:235-9. [PMID: 10499273 DOI: 10.1111/j.1574-6968.1999.tb08682.x] [Citation(s) in RCA: 8] [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: 11/27/2022] Open
Abstract
Production of tissue factor (TF) in response to lipopolysaccharide (LPS) was examined in human umbilical vein endothelial cells (HUVECs) transfected with human CD14 DNA. The expression of CD14 on HUVECs dramatically enhanced the production of TF at a low concentration of LPS in the absence of fetal calf serum (FCS). On the other hand, mock-transfected HUVECs did not respond to even a high concentration of LPS. TF production in CD14-expressing HUVECs was significantly inhibited by anti-CD14 monoclonal antibody. Addition of FCS to the culture of CD14-expressing HUVECs markedly augmented the LPS-induced TF production, whereas only a marginal effect was observed in mock-transfected HUVECs. The findings suggested that the integration of membrane CD14 rendered HUVECs highly sensitive to LPS in the production of TF irrespective of the presence of FCS.
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Affiliation(s)
- D Chakravortty
- Department of Microbiology and Immunology, Aichi Medical University, Japan
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26
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Chakravortty D, Kato Y, Koide N, Sugiyama T, Kawai M, Fukada M, Yoshida T, Yokochi T. Production of tissue factor in CD14-expressing human umbilical vein endothelial cells by lipopolysaccharide. FEMS Microbiol Lett 1999; 178:235-239. [PMID: 10499273 DOI: 10.1016/s0378-1097(99)00362-6] [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] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/19/2023] Open
Abstract
Production of tissue factor (TF) in response to lipopolysaccharide (LPS) was examined in human umbilical vein endothelial cells (HUVECs) transfected with human CD14 DNA. The expression of CD14 on HUVECs dramatically enhanced the production of TF at a low concentration of LPS in the absence of fetal calf serum (FCS). On the other hand, mock-transfected HUVECs did not respond to even a high concentration of LPS. TF production in CD14-expressing HUVECs was significantly inhibited by anti-CD14 monoclonal antibody. Addition of FCS to the culture of CD14-expressing HUVECs markedly augmented the LPS-induced TF production, whereas only a marginal effect was observed in mock-transfected HUVECs. The findings suggested that the integration of membrane CD14 rendered HUVECs highly sensitive to LPS in the production of TF irrespective of the presence of FCS.
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Affiliation(s)
- D Chakravortty
- Department of Microbiology and Immunology, Aichi Medical University, Japan
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27
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Nishiyama C, Hatanaka H, Ichikawa S, Fukada M, Akagawa-Chihara M, Yuuki T, Yokota T, Inagaki F, Okumura Y. Analysis of human IgE epitope of Der f 2 with anti-Der f 2 mouse monoclonal antibodies. Mol Immunol 1999; 36:53-60. [PMID: 10369420 DOI: 10.1016/s0161-5890(98)00112-6] [Citation(s) in RCA: 10] [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: 11/19/2022]
Abstract
Der f 2 is one of the major mite allergens recognized by human IgE antibodies of allergic patients. Using five anti-Der f 2 mouse monoclonal antibodies, human IgE epitopes of Der f 2 were analyzed. Among them, two monoclonal antibodies 15E11 and 13A4 inhibited the binding between Der f 2 and human IgE antibodies. To determine major IgE epitopes of Der f 2, epitopes for the monoclonal IgG antibodies were analyzed using 43 single site Der f 2 mutants constructed by site-directed mutagenesis. Binding ability of 13A4 and 15E11 was decreased by the amino acid replacement around the C-terminus, and around 73rd, respectively. These results suggest that the C-terminal portion and the central portion around 73rd of Der f 2 were recognized by human IgE antibodies as major epitopes. The location of the putative IgE epitopes on 3-D structure of Der f 2 is also discussed.
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Affiliation(s)
- C Nishiyama
- Bioscience Research and Development Laboratory, Asahi Breweries Ltd, Ibaraki, Japan.
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28
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Jiang GZ, Kato Y, Sugiyama T, Koide N, Chakravortty D, Kawai M, Fukada M, Yoshida T, Yokochi T. Role of CD86 (B7-2) in triggering of antigen-specific IgE antibody response by lipopolysaccharide. FEMS Immunol Med Microbiol 1998; 21:303-311. [PMID: 9753003 DOI: 10.1016/s0928-8244(98)00085-6] [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] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
The role of CD86 in triggering of ascaris extract-specific IgE antibody response by lipopolysaccharide was studied. The simultaneous administration of anti-CD86 antibody with ascaris extract and lipopolysaccharide prevented the production of IgE antibody response to ascaris extract. CD86+ cells were detected in peritoneal cavities and spleens of mice injected intraperitoneally with lipopolysaccharide. CD86+ cells appeared in peritoneal cavities and spleens eight hours after lipopolysaccharide injection, and they were detectable for a week. CD86+ cells in peritoneal cavities and spleens were mainly surface Ig-positive B-cells and some Ig-negative cells. It was suggested that lipopolysaccharide induced the expression of CD86 mainly on B-cells, and that CD86+ cells induced by lipopolysaccharide injection might play an important role as antigen-presenting cells on triggering of ascaris extract-specific IgE antibody response by lipopolysaccharide.
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Affiliation(s)
- G Z Jiang
- Department of Microbiology and Immunology, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Japan
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29
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Jiang GZ, Kato Y, Sugiyama T, Koide N, Chakravortty D, Kawai M, Fukada M, Yoshida T, Yokochi T. Role of CD86 (B7-2) in triggering of antigen-specific IgE antibody response by lipopolysaccharide. FEMS Immunol Med Microbiol 1998; 21:303-11. [PMID: 9753003 DOI: 10.1111/j.1574-695x.1998.tb01178.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The role of CD86 in triggering of ascaris extract-specific IgE antibody response by lipopolysaccharide was studied. The simultaneous administration of anti-CD86 antibody with ascaris extract and lipopolysaccharide prevented the production of IgE antibody response to ascaris extract. CD86+ cells were detected in peritoneal cavities and spleens of mice injected intraperitoneally with lipopolysaccharide. CD86+ cells appeared in peritoneal cavities and spleens eight hours after lipopolysaccharide injection, and they were detectable for a week. CD86+ cells in peritoneal cavities and spleens were mainly surface Ig-positive B-cells and some Ig-negative cells. It was suggested that lipopolysaccharide induced the expression of CD86 mainly on B-cells, and that CD86+ cells induced by lipopolysaccharide injection might play an important role as antigen-presenting cells on triggering of ascaris extract-specific IgE antibody response by lipopolysaccharide.
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Affiliation(s)
- G Z Jiang
- Department of Microbiology and Immunology, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Japan
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30
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Yasue M, Yokota T, Fukada M, Takai T, Suko M, Okudaira H, Okumura Y. Hyposensitization to allergic reaction in rDer f 2-sensitized mice by the intranasal administration of a mutant of rDer f 2, C8/119S. Clin Exp Immunol 1998; 113:1-9. [PMID: 9697976 PMCID: PMC1905018 DOI: 10.1046/j.1365-2249.1998.00616.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.8] [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] [Indexed: 11/20/2022] Open
Abstract
C8/119S is a mutant of recombinant Der f 2 (rDer f 2), and lacks a disulphide bond possessed by wild-type rDer f 2. In humans and mice, C8/119S has a very weak IgE-binding capacity compared with the wild-type, but possesses a T cell reactivity comparable to that of the wild-type. C8/119S may thus be a safe immunotherapeutic agent for house dust mite allergy. The aim of the present study was to evaluate whether the intranasal administration of C8/119S could suppress an immediate allergic reaction in mice sensitized with wild-type rDer f 2, possessing an allergic activity comparable to native counterparts purified from mite extract. Seven-week-old male A/J mice were immunized with wild-type rDer f 2 four times, and then intranasally administered 0.2-2 microg of wild-type, 0.2-20 microg of C8/119S, or PBS alone, three times a week for 4 weeks. Seven days after the last administration, the mice were examined for an immediate allergic reaction. The animals administered 2 microg of C8/119S (C2.0 group) showed significantly reduced immediate bronchoconstriction provoked by the i.v. injection of 1 and 10 microg of wild-type rDer f 2, compared with the PBS-treated mice. Similar results were obtained when we examined mice 10 weeks after the last administration. The reactions in the other groups given wild-type or C8/119S also tended to decrease in severity in comparison with the animals of the PBS group. The allergic phenotypes of the T cells, B cells, and basophils in the C2.0 group were shifted to that of naive mice without immunization. We conclude that C8/119S has hyposensitizing activities in mice sensitized with wild-type rDer f 2. C8/119S may be useful for immunotherapy of house dust mite allergy.
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Affiliation(s)
- M Yasue
- Bioscience Research and Development Laboratory, Asahi Breweries Ltd, Ibaraki, Japan
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31
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Morikawa A, Kato Y, Sugiyama T, Koide N, Kawai M, Fukada M, Yoshida T, Yokochi T. Altered expression of constitutive type and inducible type heat shock proteins in response of D-galactosamine-sensitized mice to lipopolysaccharide as an experimental endotoxic shock model. FEMS Immunol Med Microbiol 1998; 21:37-45. [PMID: 9657319 DOI: 10.1111/j.1574-695x.1998.tb01147.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The expression of heat shock proteins (HSPs) as stress-induced proteins was studied in mice injected with D-galactosamine (D-GalN) and lipopolysaccharide (LPS) as an experimental endotoxic shock model. The expression of constitutive type heat shock protein 70 (HSC70) was significantly reduced in livers of mice injected with D-galactosamine and lipopolysaccharide, while its expression was unaffected in livers of mice injected with D-galactosamine or lipopolysaccharide alone. The expression of other constitutive type heat shock proteins, namely HSP60, HSP32 and HSP25 was also reduced in mice injected with D-galactosamine and lipopolysaccharide. On the other hand, inducible type HSP70 was detected in livers from mice injected with D-galactosamine and lipopolysaccharide, but not in livers from mice injected with D-galactosamine or lipopolysaccharide alone. Simultaneous injection of anti-tumor necrosis factor (TNF)-alpha antibody prevented the liver from reduced expression of constitutive type HSC70, and lead to marked expression of inducible type HSP70 in the liver. Reduced expression of constitutive type HSC70 was also found when D-galactosamine and recombinant TNF-alpha was injected. Therefore, TNF-alpha was suggested to play a critical role on altered expression of constitutive HSC70 and inducible type HSP70 in response of D-galactosamine-sensitized mice to lipopolysaccharide.
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Affiliation(s)
- A Morikawa
- Department of Microbiology and Immunology, Research Center for Infectious Disease, Aichi Medical University, Nagakute, Japan
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32
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Kawamura T, Toyabe S, Moroda T, Iiai T, Takahashi-Iwanaga H, Fukada M, Watanabe H, Sekikawa H, Seki S, Abo T. Neonatal granulocytosis is a postpartum event which is seen in the liver as well as in the blood. Hepatology 1997; 26:1567-72. [PMID: 9397999 DOI: 10.1053/jhep.1997.v26.pm0009397999] [Citation(s) in RCA: 10] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In a recent series of studies, we demonstrated that stress in humans and animals, with resultant sympathetic nerve strain, induces severe granulocytosis, because granulocytes carry adrenergic receptors on the surface. Because activated granulocytes produce free radicals and superoxides, they sometimes induce tissue damage if the stress is too strong or continuous. Human neonates are also known to show high levels of granulocytes in the peripheral blood. In this study, we investigated whether such neonatal granulocytosis are a stress-associated response at birth. Both human and mouse materials, before and after birth, were used. The number of leukocytes in the blood, as well as some other factors in the serum, were measured. Although levels of granulocytes were found to be low in fetal humans and mice, they increased sharply after birth. In parallel with this postpartal granulocytosis, transaminases in sera increased transiently. In reference to results of a transient elevation in the levels of catecholamines at birth in mice, all these phenomena resemble stress-associated responses. Indeed, fatty liver and hematopoietic destruction in the liver were also observed in mice and humans. At this time, the production of inducible nitric oxide synthase (iNOS) by granulocytes in the liver was evident. These results suggest that neonatal granulocytosis is a postpartum event which results from various stresses (e.g., oxygen stress) at birth. This event may be responsible for such well-known neonatal phenomena as the termination of fetal hematopoiesis in the liver and as neonatal jaundice.
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Affiliation(s)
- T Kawamura
- Department of Immunology, Niigata University School of Medicine, Japan
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33
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Yokochi T, Kato Y, Sugiyama T, Koide N, Morikawa A, Jiang GZ, Kawai M, Yoshida T, Fukada M, Takahashi K. Lipopolysaccharide induces apoptotic cell death of B memory cells and regulates B cell memory in antigen-nonspecific manner. FEMS Immunol Med Microbiol 1996; 15:1-8. [PMID: 8871109 DOI: 10.1111/j.1574-695x.1996.tb00351.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Lipopolysaccharide (LPS) was administered into sheep red blood cells (SRBC)-primed mice, and the effect of LPS on SRBC-specific memory cells was investigated. Spleen cells from SRBC-primed mice which were injected with LPS exhibited much lower in vitro secondary plaque-forming cells (PFC) responses to SRBC than those from untreated SRBC-primed mice. The in vitro anti-SRBC response of the spleen cells to LPS was also reduced. The combination experiments of B cells and T cells from SRBC-primed mice which were injected with or without LPS demonstrated that the reduction of immune responses to SRBC after administration of LPS was caused by the defect of SRBC-specific B memory cells, but not T memory cells. B cell type rosette-forming cells (RFC) for SRBC markedly decreased after injection of LPS, while PFC as antibody-forming cells did not increase subsequently. Therefore, the reduction of RFC was not due to their differentiation into PFC. The lymphoid follicles in the spleens from mice injected with LPS were stained positively by in situ nick end labeling specific for fragmented DNA. A large percentage of Ig+ spleen cells from SRBC-primed mice which were injected with LPS was also stained positively. The injection of glucocorticoids into SRBC-primed mice induced similar reduction of B memory cells. It was suggested that LPS might induce apoptosis of B memory cells and regulate B cell memory in antigen-nonspecific manner.
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Affiliation(s)
- T Yokochi
- Department of Microbiology and Immunology, Aichi Medical University, Japan.
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34
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Nishiyama C, Fukada M, Usui Y, Iwamoto N, Yuuki T, Okumura Y, Okudaira H. Analysis of the IgE-epitope of Der f 2, a major mite allergen, by in vitro mutagenesis. Mol Immunol 1995; 32:1021-9. [PMID: 8544851 DOI: 10.1016/0161-5890(95)00091-7] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.4] [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: 01/31/2023]
Abstract
Der f 2 is a major mite allergen composed of 129 amino acid residues. To determine the major epitopes on Der f 2 recognized by human IgE antibodies, artificial mutations were introduced to Der f 2 protein. The IgE-binding activity of Der f 2 was significantly decreased by deletion of 10 amino acids at the N-terminus or nine amino acids at the C-terminus. Site-directed mutagenesis with a single amino acid replacement by Ala or Leu in both N- and C-terminal regions as well as a central portion was performed to generate 42 single-site mutations. Amino acid replacement around a disulfide bond of Cys8-Cys119 caused a marked decrease in IgE-binding activity. Furthermore, a distinct decrease in IgE-binding was also caused by Ala-substitution close to a disulfide bond of Cys73-Cys78 and by mutations of a few charged residues. From these results, it was concluded that the two disulfide-forming regions of Der f 2 and several charged residues are important for forming major epitope structures recognized by human IgE antibodies.
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Affiliation(s)
- C Nishiyama
- Central Research Laboratories, Asahi Breweries Ltd, Tokyo, Japan
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35
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Ishiguro K, Yanagihara M, Ueda K, Miyoshi N, Fukada M. 041 Effect of pH and O2-gas bubbling for generation of active oxygen in photodynamic therapy with pheophorbide derivative. J Dermatol Sci 1995. [DOI: 10.1016/0923-1811(95)93755-p] [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: 11/15/2022]
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36
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Yokochi T, Inoue Y, Kato Y, Sugiyama T, Jiang GZ, Kawai M, Fukada M, Takahashi K. Strong adjuvant action of Klebsiella O3 lipopolysaccharide and its inhibition of systemic anaphylaxis. FEMS Immunol Med Microbiol 1995; 10:181-4. [PMID: 7773234 DOI: 10.1111/j.1574-695x.1995.tb00031.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Immunization with lipopolysaccharide from Klebsiella O3 as an immunological adjuvant did not cause the death of mice in systemic anaphylaxis to bovine serum albumin. On the other hand, most mice immunized with lipopolysaccharide from Escherichia coli O111, Klebsiella O4 and Salmonella minnesota did die. Klebsiella O3 lipopolysaccharide enhanced IgM and IgG antibody response to BSA more markedly than Escherichia coli O111 lipopolysaccharide, while it affected the production of IgE antibody only slightly. therefore, it is suggested that the inhibition of systemic anaphylaxis by Klebsiella O3 lipopolysaccharide adjuvant might be related to its strong adjuvant action on IgM and IgG class antibody production, and that high levels of circulating IgM and IgG antibodies might act as blocking antibodies in the development of IgE-mediated systemic anaphylaxis.
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Affiliation(s)
- T Yokochi
- Department of Microbiology, Aichi Medical University, Japan
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37
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Yokochi T, Inoue Y, Jiang GZ, Kato Y, Sugiyama T, Kawai M, Fukada M, Takahashi K. Increased phosphodiesters in lipopolysaccharide prepared from the polymyxin B-resistant isolate of Klebsiella pneumoniae. Microbiol Immunol 1994; 38:901-3. [PMID: 7898390 DOI: 10.1111/j.1348-0421.1994.tb02144.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 01/27/2023]
Abstract
A polymyxin B (PXB)-resistant mutant of Klebsiella pneumoniae O3 was isolated. Lipopolysaccharide (LPS) extracted from the PXB-resistant isolate bound little PXB, although LPS from the parental strain did. The 31P nuclear magnetic resonance (NMR) spectrum of PXB-resistant type LPS showed that it contained much less of the phosphomonoesters and the pyrophosphate esters, and an increased amount of the phosphodiesters, compared to the parental type LPS. The decrease in the binding of PXB might be due to altered phosphate groups on the PXB-resistant type LPS, suggesting that it might explain the PXB-resistance of the mutant.
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Affiliation(s)
- T Yokochi
- Department of Microbiology, Aichi Medical University, Japan
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38
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Zhang YH, Takahashi K, Jiang GZ, Zhang XM, Kawai M, Fukada M, Yokochi T. In vivo production of heat shock protein in mouse peritoneal macrophages by administration of lipopolysaccharide. Infect Immun 1994; 62:4140-4. [PMID: 7927668 PMCID: PMC303088 DOI: 10.1128/iai.62.10.4140-4144.1994] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.2] [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: 01/27/2023] Open
Abstract
The in vivo production of heat shock protein was studied by administration of bacterial lipopolysaccharide (LPS) into mice. Heat shock protein 70 was detected in the extract of adherent peritoneal cells from mice injected intraperitoneally with LPS by using the immunoblotting method. The expression of heat shock protein 70 was found 2 days after injection of LPS and reached its peak 4 days after injection. The intraperitoneal injection of LPS induced the expression of heat shock protein 70, whereas its subcutaneous injection did not. The in vivo production of heat shock protein 70 was inhibited by administration of LPS together with quercetin, an inhibitor of accumulation of heat shock protein 70 mRNA. Tumor necrosis factor alpha enhanced LPS-induced heat shock protein production in vivo. There was a decrease of gamma delta T cells in the peritoneal cavity of mice injected intraperitoneally with LPS. It was suggested that bacterial LPS is a stressful agent which induces the in vivo heat shock protein response, and its administration leads to the production of heat shock protein 70 in peritoneal macrophages.
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Affiliation(s)
- Y H Zhang
- Department of Microbiology, Aichi Medical University, Japan
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39
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Zhang XM, Morikawa A, Takahashi K, Jiang GZ, Kato Y, Sugiyama T, Kawai M, Fukada M, Yokochi T. Localization of apoptosis (programmed cell death) in mice by administration of lipopolysaccharide. Microbiol Immunol 1994; 38:669-71. [PMID: 7799841 DOI: 10.1111/j.1348-0421.1994.tb01838.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.1] [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: 01/27/2023]
Abstract
Localization of apoptotic cells by administration of lipopolysaccharide into mice was studied by using the in situ specific labeling of fragmented DNA. This method clearly stained the nuclei of thymocytes at the cortex of the thymus. The nuclei of cells in the bone marrow and in the spleen were also positively stained. It was suggested that the cortex in the thymus is where the LPS-induced programmed cell death occurs.
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Affiliation(s)
- X M Zhang
- Department of Microbiology, Aichi Medical University, Japan
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40
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Isoe K, Watanabe Y, Tanaka H, Saito J, Fukada M. [A case of pontine supranuclear facial palsy]. Rinsho Shinkeigaku 1994; 34:848-50. [PMID: 7994997] [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: 01/28/2023]
Abstract
A 56-year-old hypertensive man suddenly developed difficulty in speaking and numbness in the right hand. On admission, he showed moderate right supranuclear facial palsy and right clumsy hand. Three weeks later, he was discharged with only right supranuclear facial palsy. MRI revealed a small infarction in the middle pons. The lesion was situated in the paramedian borderzone between the base and tegmentum. These findings suggest that supranuclear fibers to the facial nucleus descend as a separate bundle from the main pyramidal tract at the mid-pontine level.
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Affiliation(s)
- K Isoe
- Department of Neurology, Shimane Prefectual Central Hospital
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41
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Tanaka H, Isoe K, Watanabe Y, Saito J, Fukada M. [A case of cerebral pedunclar infarction presenting with pure motor hemiparesis]. Rinsho Shinkeigaku 1994; 34:180-2. [PMID: 8194275] [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: 01/29/2023]
Abstract
Left pure motor hemiparesis occurred in a 42-year-old woman with a history of hypertension and diabetes mellitus. The left hemiparesis affected the arm and leg equally. The face was almost spared, with only a very slight facial asymmetry. Brain CT and MRI showed a small infarction located in the external 2/3 of the right cerebral peduncle. Cerebral angiography did not reveal significant abnormalities.
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Affiliation(s)
- H Tanaka
- Department of Neurology, Shimane Prefectural Central Hospital
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42
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Zhang YH, Takahashi K, Jiang GZ, Kawai M, Fukada M, Yokochi T. In vivo induction of apoptosis (programmed cell death) in mouse thymus by administration of lipopolysaccharide. Infect Immun 1993; 61:5044-8. [PMID: 8225580 PMCID: PMC281281 DOI: 10.1128/iai.61.12.5044-5048.1993] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.4] [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: 01/29/2023] Open
Abstract
In vivo administration of bacterial lipopolysaccharide to mice induced DNA fragmentation in the thymus. Fragmented DNA was confirmed by agarose gel electrophoresis and laser flow cytometry. DNA fragmentation was predominantly detected in the thymus of young mice, while it was undetectable in the spleen, bone marrow, and lymph nodes. DNA fragmentation in the thymus was roughly dependent on the dose of lipopolysaccharide injected and reached the peak about 18 h after the injection. The addition of lipopolysaccharide to in vitro cultures of thymocytes did not cause DNA fragmentation, suggesting that lipopolysaccharide was unable to induce apoptosis of thymocytes directly. The injection of lipopolysaccharide induced no significant DNA fragmentation in adrenalectomized mice. The injection of anti-tumor necrosis factor alpha antibody together with lipopolysaccharide partially inhibited the appearance of DNA fragmentation in the thymus. On the basis of the fact that DNA fragmentation is one of the characteristics typical in apoptotic cell death, it was suggested that lipopolysaccharide could induce apoptosis in the mouse thymus in vivo. This apoptosis in the thymus might be mediated mainly by the adrenal hormones, but it is likely that tumor necrosis factor alpha might also participate in it.
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Affiliation(s)
- Y H Zhang
- Department of Microbiology, Aichi Medical University, Japan
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43
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Yokochi T, Fukada M, Kawai M, Zhang YH, Jiang GZ, Takahashi K. Novel adjuvant action of lipopolysaccharides that possess mannose homopolysaccharides as O-specific polysaccharides on immune responses to nonimmunogenic autoantigens in mice. Infect Immun 1992; 60:4953-6. [PMID: 1383160 PMCID: PMC258254 DOI: 10.1128/iai.60.11.4953-4956.1992] [Citation(s) in RCA: 15] [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] [Indexed: 12/26/2022] Open
Abstract
The adjuvant action of various lipopolysaccharides on immune responses to syngeneic tissue extract in mice was examined. Only lipopolysaccharides possessing the linear mannose homopolysaccharides as O-specific polysaccharides exhibited definite adjuvant action on immune responses to the autoantigens. The intensity of this adjuvant activity of lipopolysaccharide from Klebsiella O3 seemed to be the strongest.
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Affiliation(s)
- T Yokochi
- Department of Microbiology, Aichi Medical University School of Medicine, Japan
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44
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Takahashi K, Fukada M, Kawai M, Yokochi T. Detection of lipopolysaccharide (LPS) and identification of its serotype by an enzyme-linked immunosorbent assay (ELISA) using poly-L-lysine. J Immunol Methods 1992; 153:67-71. [PMID: 1517602 DOI: 10.1016/0022-1759(92)90306-e] [Citation(s) in RCA: 26] [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: 12/27/2022]
Abstract
A new solid-phase enzyme-linked immunosorbent assay (ELISA) was developed for detection of LPS and identification of its serotype with antisera. Since LPS binds poorly to polystyrene microplates, precoating with poly-L-lysine was used before coating LPS on the surface of microplates. The small amount of LPS in complex mixtures (i.e., less than 1 microgram/ml) could be detectable in ELISA. Use of poly-L-lysine with high molecular weight (MW) provided a higher sensitivity than poly-L-lysine with low MW. Precoating with polymyxin B, or poly-L-histidine was less effective in the sensitivity than precoating with poly-L-lysine, but it was still better than no precoating. The newly developed ELISA technique could be also applied for detection of anti-LPS antibodies in sera or for screening of monoclonal anti-LPS antibody.
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Affiliation(s)
- K Takahashi
- Department of Microbiology, Aichi Medical University School of Medicine, Japan
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45
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Abstract
Two new cell surface antigens expressed on mouse alveolar macrophages were defined by rat monoclonal antibodies. One marker, AVM-1, was detected on mouse alveolar macrophages, but it was undetectable on resident peritoneal cells, thioglycollate medium-induced peritoneal cells, and splenic macrophages. Splenic lymphocytes, thymocytes and bone marrow cells were also AVM-1 negative. Anti-AVM-1 monoclonal antibody immunoprecipitated a single polypeptide with a molecular weight of 200,000. Of particular interest was the finding that the anti-AVM-1 antibody could inhibit the formation of EA and EAC rosette on macrophage line cells. A second antigen (AVM-2) was also present on alveolar macrophages, and its molecular weight was 38,000.
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Affiliation(s)
- K Yoshikawa
- Department of Microbiology, Aichi Medical University School of Medicine, Japan
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46
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Yokochi T, Inoue Y, Fukada M, Kawai M, Yoshikawa K, Suzuki Y, Kato N. Histological and functional changes in the thyroid glands of mice implanted with hybridomas secreting monoclonal autoantibody against mouse thyroglobulin. Autoimmunity 1991; 10:125-31. [PMID: 1782326 DOI: 10.3109/08916939109004816] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [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: 12/28/2022]
Abstract
Mouse hybridoma cells secreting monoclonal antibody (mAb) against mouse thyroglobulin were established. The implantation of the hybridomas succeeded to induce high titers of circulating mAb against thyroglobulin in sera of mice. By using the implantation of the hybridomas in mice, the effect of autoantibody on the thyroid glands was studied histologically and functionally. In these mice the thyroid follicles were significantly swollen and warped, whereas there was no infiltration of inflammatory cells. The 125I-uptake in their thyroid glands was markedly decreased. There were no functional changes in control mice implanted with non-secreting P3U1 partner cells. Therefore, it was suggested that high titers of anti-thyroglobulin autoantibody could definitely cause the histological and functional damages in the thyroid glands.
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Affiliation(s)
- T Yokochi
- Department of Microbiology, Aichi Medical University School of Medicine, Japan
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47
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Araga S, Fukada M, Kagimoto H, Inagawa T, Takahashi K. Transient global amnesia and falcotentorial meningioma--a case report. Jpn J Psychiatry Neurol 1989; 43:201-3. [PMID: 2796031] [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: 01/02/2023]
Abstract
A 59-year-old woman suffered from a single episode of transient global amnesia (TGA). A computerized tomographic scan and angiographic examinations revealed a falcotentorial meningioma, supplied by the posterior cerebral arteries. We suggest that TGA can be attributed to the vascular insufficiency in this case.
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Affiliation(s)
- S Araga
- Division of Neurology, Tottori University School of Medicine, Yonago, Japan
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48
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Abstract
A method to recover and identify DNA fragments that were specifically bound by a monoclonal anti-DNA antibody has been developed. A mixture of DNA fragments digested by restriction enzymes was first incubated with a murine monoclonal anti-DNA antibody and then reacted with anti-murine immunoglobulin-conjugated Sepharose 4B. The resulting complex was washed to remove unbound DNA by low-speed centrifugation. The bound DNA fragment was released from antibody by alkaline dimethyl sulfoxide solution or extracted by phenol treatment. The recovered DNA was analyzed by electrophoresis on a polyacrylamide gel.
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Affiliation(s)
- M Fukada
- Department of Microbiology, Aichi Medical University, Japan
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49
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Urakami K, Fukada M, Igo M, Mikamo K, Takahashi K. [Five year follow-up study on dementia in the aged population]. Rinsho Shinkeigaku 1988; 28:21-3. [PMID: 3383510] [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: 01/05/2023]
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50
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Abstract
Two cases of pure sensory stroke due to pontine haemorrhage are reported. Haematomas were located in the dorsolateral tegmentum of the pons, detected by computed tomographic scan. One showed the cheiro-oral syndrome on the left side. The other showed sensory dysaesthesia on the right side of the body, followed by dysaesthesia of cheiro-oral distribution. These cases indicate that the pons can also be one of the lesion sites of pure sensory stroke.
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Affiliation(s)
- S Araga
- Division of Neurology, Tottori University School of Medicine, Yonago, Japan
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