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Abbasi RU, Allen MG, Arimura R, Belz JW, Bergman DR, Blake SA, Shin BK, Buckland IJ, Cheon BG, Fujii T, Fujisue K, Fujita K, Fukushima M, Furlich GD, Gerber ZR, Globus N, Hibino K, Higuchi R, Honda K, Ikeda D, Ito H, Iwasaki A, Jeong S, Jeong HM, Jui CH, Kadota K, Kakimoto F, Kalashev OE, Kasahara K, Kawata K, Kharuk I, Kido E, Kim SW, Kim HB, Kim JH, Kim JH, Komae I, Kubota Y, Kuznetsov MY, Lee KH, Lubsandorzhiev BK, Lundquist JP, Matthews JN, Nagataki S, Nakamura T, Nakazawa A, Nonaka T, Ogio S, Ono M, Oshima H, Park IH, Potts M, Pshirkov S, Remington JR, Rodriguez DC, Rott C, Rubtsov GI, Ryu D, Sagawa H, Sakaki N, Sako T, Sakurai N, Shin H, Smith JD, Sokolsky P, Stokes BT, Stroman TS, Takahashi K, Takeda M, Taketa A, Tameda Y, Thomas S, Thomson GB, Tinyakov PG, Tkachev I, Tomida T, Troitsky SV, Tsunesada Y, Udo S, Urban FR, Wong T, Yamazaki K, Yuma Y, Zhezher YV, Zundel Z. An extremely energetic cosmic ray observed by a surface detector array. Science 2023; 382:903-907. [PMID: 37995237 DOI: 10.1126/science.abo5095] [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] [Received: 02/08/2022] [Accepted: 10/19/2023] [Indexed: 11/25/2023]
Abstract
Cosmic rays are energetic charged particles from extraterrestrial sources, with the highest-energy events thought to come from extragalactic sources. Their arrival is infrequent, so detection requires instruments with large collecting areas. In this work, we report the detection of an extremely energetic particle recorded by the surface detector array of the Telescope Array experiment. We calculate the particle's energy as [Formula: see text] (~40 joules). Its arrival direction points back to a void in the large-scale structure of the Universe. Possible explanations include a large deflection by the foreground magnetic field, an unidentified source in the local extragalactic neighborhood, or an incomplete knowledge of particle physics.
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Affiliation(s)
- R U Abbasi
- Physics Department, Loyola University Chicago, Chicago, IL, USA
| | - M G Allen
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - R Arimura
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - J W Belz
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - D R Bergman
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S A Blake
- Stellar Science, Albuquerque, NM, USA
| | - B K Shin
- Department of Physics, Ulsan National Institute of Science and Technology, 44919, Ulsan, Korea
| | - I J Buckland
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - B G Cheon
- Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul, Korea
| | - T Fujii
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
- Hakubi Center for Advanced Research and Graduate School of Science, Kyoto University, Sakyo, Kyoto, 606-8502, Japan
- Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - K Fujisue
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - K Fujita
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Fukushima
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - G D Furlich
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - Z R Gerber
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - N Globus
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - K Hibino
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - R Higuchi
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - K Honda
- University of Yamanashi, Kofu, 400-8510, Japan
| | - D Ikeda
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - H Ito
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - A Iwasaki
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - S Jeong
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - H M Jeong
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - C H Jui
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Kadota
- Department of Natural Sciences, Tokyo City University, Setagaya-ku, Tokyo 158-8557, Japan
| | - F Kakimoto
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - O E Kalashev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - K Kasahara
- Shibauta Institute of Technology and Sicence, Fukasaku 307, Minuma-ku, Saitama, Japan
| | - K Kawata
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - I Kharuk
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - E Kido
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - S W Kim
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - H B Kim
- Department of Physics and The Research Institute of Natural Science, Hanyang University, Seongdong-gu, Seoul, Korea
| | - J H Kim
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - J H Kim
- Physics Division, Argonne National Laboratory, Lemont, IL, USA
| | - I Komae
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - Y Kubota
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - M Y Kuznetsov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - K H Lee
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - B K Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - J P Lundquist
- Center for Astrophysics and Cosmology, University of Nova Gorica, Nova Gorica, Slovenia
| | - J N Matthews
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S Nagataki
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - T Nakamura
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - A Nakazawa
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - T Nonaka
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - S Ogio
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Ono
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
- Institute of Astronomy and Astrophysics, Academia Sinica, Taipei 10617, Taiwan
| | - H Oshima
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - I H Park
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - M Potts
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - S Pshirkov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - J R Remington
- NASA Marshall Space Flight Center, Martin Road, Huntsville, AL, USA
| | - D C Rodriguez
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
- Integrated Support Center for Nuclear Nonproliferation and Nuclear Security, Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1195, Japan
| | - C Rott
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
- Department of Physics, SungKyunKwan University, Jang-an-gu, Suwon 16419, Korea
| | - G I Rubtsov
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - D Ryu
- Department of Physics, Ulsan National Institute of Science and Technology, 44919, Ulsan, Korea
| | - H Sagawa
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - N Sakaki
- Institute of Physical and Chemical Research, 2-1 Hirosawa, Wako, Saitama, 351-0198 Japan
| | - T Sako
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - N Sakurai
- Faculty of Design Technology, 3-1-1 Nakagaito, Daito City, Osaka, Japan
| | - H Shin
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - J D Smith
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - P Sokolsky
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - B T Stokes
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - T S Stroman
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Takahashi
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - M Takeda
- Institute for Cosmic Ray Research, University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa-shi, Chiba, 277-8582, Japan
| | - A Taketa
- Earthquake Research Institute, University of Tokyo, Bunkyo-ku, Tokyo, 113-0032, Japan
| | - Y Tameda
- Department of Engineering Science, Faculty of Engineering, Osaka Electro-Communication University, Neyagawa-shi, Osaka 572-8530, Japan
| | - S Thomas
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - G B Thomson
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - P G Tinyakov
- Universite Libre de Bruxelles, bvd du Triomphe CP225, Brussels, Belgium
| | - I Tkachev
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - T Tomida
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - S V Troitsky
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - Y Tsunesada
- Graduate School of Science, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
- Nambu Yoichiro Institute of Theoretical and Experimental Physics, Osaka Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi, Osaka, 558-8585, Japan
| | - S Udo
- Faculty of Engineering, Kanagawa University, 3-27-1 Rokkakubashi, Kanagawa-ku, Yokohama 221-8686, Japan
| | - F R Urban
- The Central European Institute for Cosmology and Fundamental Physics, Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 21 Prague, Czech Republic
| | - T Wong
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
| | - K Yamazaki
- College of Engineering, Chubu University, 1200 Matsumoto, Kasugai, Aichi 487-8501, Japan
| | - Y Yuma
- Academic Assembly School of Science and Technology Institute of Engineering, Shinshu University, Nagano, Nagano, 380-8553, Japan
| | - Y V Zhezher
- Institute for Nuclear Research of the Russian Academy of Sciences, prospekt 60-letiya Oktyabrya 7a, Moscow 117312, Russia
| | - Z Zundel
- High Energy Astrophysics Institute and Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, USA
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Bellone S, Roque DM, Siegel ER, Buza N, Hui P, Bonazzoli E, Guglielmi A, Zammataro L, Nagarkatti N, Zaidi S, Lee J, Silasi DA, Huang GS, Andikyan V, Damast S, Clark M, Azodi M, Schwartz PE, Tymon-Rosario J, Harold J, Mauricio D, Zeybek B, Menderes G, Altwerger G, Ratner E, Alexandrov LB, Iwasaki A, Kong Y, Song E, Dong W, Elvin J, Choi J, Santin AD. A phase II evaluation of pembrolizumab in recurrent microsatellite instability-high (MSI-H) endometrial cancer patients with Lynch-like versus MLH-1 methylated characteristics (NCT02899793). Ann Oncol 2021; 32:1045-1046. [PMID: 33932502 DOI: 10.1016/j.annonc.2021.04.013] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/21/2021] [Accepted: 04/22/2021] [Indexed: 01/21/2023] Open
Affiliation(s)
- S Bellone
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - D M Roque
- Greenebaum Comprehensive Cancer Center, University of Maryland School of Medicine, Baltimore, USA
| | - E R Siegel
- Department of Biostatistics, University of Arkansas for Medical Sciences, Little Rock, USA
| | - N Buza
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - P Hui
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - E Bonazzoli
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - A Guglielmi
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - L Zammataro
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - N Nagarkatti
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - S Zaidi
- Human Oncology and Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, USA
| | - J Lee
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
| | - D-A Silasi
- Division of Gynecologic Oncology, Mercy Clinic, St. Louis, USA
| | - G S Huang
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - V Andikyan
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - S Damast
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - M Clark
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - M Azodi
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - P E Schwartz
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - J Tymon-Rosario
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - J Harold
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - D Mauricio
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - B Zeybek
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - G Menderes
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - G Altwerger
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - E Ratner
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - L B Alexandrov
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, USA
| | - A Iwasaki
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - Y Kong
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - E Song
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA
| | - W Dong
- Laboratory of Human Genetics and Genomics, The Rockefeller University, New York, USA
| | - J Elvin
- Cancer Genomics Research, Foundation Medicine, Cambridge, USA
| | - J Choi
- Department of Biomedical Sciences, Korea University College of Medicine, Seoul, South Korea
| | - A D Santin
- Smilow Comprehensive Cancer Center, Yale University School of Medicine, New Haven, USA.
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Iwasaki A, Kokubun N, Funakoshi K, Hirata K, Suzuki K. Hydrocephalus due to marked enlargement of spinal roots in a patient with chronic inflammatory demyelinating polyradiculoneuropathy. Eur J Neurol 2020; 27:2385-2388. [DOI: 10.1111/ene.14492] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 08/19/2020] [Indexed: 11/28/2022]
Affiliation(s)
- A. Iwasaki
- Department of Neurology Dokkyo Medical University Tochigi Japan
| | - N. Kokubun
- Department of Neurology Dokkyo Medical University Tochigi Japan
| | - K. Funakoshi
- Department of Neurology Dokkyo Medical University Tochigi Japan
| | - K. Hirata
- Department of Neurology Dokkyo Medical University Tochigi Japan
| | - K. Suzuki
- Department of Neurology Dokkyo Medical University Tochigi Japan
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Obuchi T, Makimoto Y, Iwasaki A. HICCUPS ALWAYS CEASE WHEN EXPOSED TO ACUTE HYPERCAPNIA. Chest 2020. [DOI: 10.1016/j.chest.2020.05.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Ohbayashi Y, Iwasaki A, Nakai F, Mashiba T, Miyake M. A comparative effectiveness pilot study of teriparatide for medication-related osteonecrosis of the jaw: daily versus weekly administration. Osteoporos Int 2020; 31:577-585. [PMID: 31768589 DOI: 10.1007/s00198-019-05199-w] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Accepted: 10/16/2019] [Indexed: 01/08/2023]
Abstract
UNLABELLED We studied the effectiveness of teriparatide (TPTD) for treating medication-related osteonecrosis of the jaw (MRONJ) in patients with osteoporosis and examined differences in the clinical outcomes following daily versus weekly TPTD. The outcomes were significantly improved in the entire patient series and the daily group. PURPOSE Teriparatide (TPTD) treatment for Stage II-III medication-related osteonecrosis of the jaw (MRONJ) in osteoporotic patients has yielded promising results in uncontrolled studies. The daily administration and the weekly administration of TPTD have been reported to improve outcomes in MRONJ. Herein, we sought to identify differences in the clinical outcomes of MRONJ patients treated with daily TPTD versus weekly TPTD. METHODS We enrolled 13 patients and randomly assigned them to receive either of two treatments: 1×/week 56.5-μg TPTD injection for 6 months (weekly group; n = 6 patients after 1 dropout), or 20-μg TPTD injection daily for 6 months (daily group; n = 6 patients). Patients in both groups received conventional therapy plus intensive antibiotic therapy as necessary. We compared the changes in the patients' clinical stage of MRONJ, bone metabolism, percentage of bone formation, and bone turnover markers between the weekly and daily groups. RESULTS TPTD treatment with MRONJ led to partial remission or complete remission in 5 daily-group patients and 3 weekly-group patients. The MRONJ stage was significantly improved from baseline to 6 months of treatment in the entire series of 12 patients (p = 0.008); the weekly group did not show significant improvement, but the daily group did (p = 0.01). CONCLUSIONS This study provides the first comparison of clinical outcomes between MRONJ patients who received daily or weekly TPTD injections. Six months of treatment with TPTD realized a significant improvement of MRONJ stage in both the entire patient series and the daily group.
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Affiliation(s)
- Y Ohbayashi
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita-gun, Kagawa, Miki-cho, 761-0793, Japan.
| | - A Iwasaki
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita-gun, Kagawa, Miki-cho, 761-0793, Japan
| | - F Nakai
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita-gun, Kagawa, Miki-cho, 761-0793, Japan
| | - T Mashiba
- Department of Orthopedic Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita-gun, Kagawa, Miki-cho, 761-0793, Japan
| | - M Miyake
- Department of Oral and Maxillofacial Surgery, Faculty of Medicine, Kagawa University, 1750-1 Ikenobe, Kita-gun, Kagawa, Miki-cho, 761-0793, Japan
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Inomata Y, Ohizumi T, Saito T, Morohashi M, Yamashita N, Takahashi M, Sase H, Takahashi K, Kaneyasu N, Fujihara M, Iwasaki A, Nakagomi K, Shiroma T, Yamaguchi T. Estimating transboundary transported anthropogenic sulfate deposition in Japan using the sulfur isotopic ratio. Sci Total Environ 2019; 691:779-788. [PMID: 31326801 DOI: 10.1016/j.scitotenv.2019.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Revised: 06/30/2019] [Accepted: 07/01/2019] [Indexed: 06/10/2023]
Abstract
High emissions of air pollutants from Northeast Asia are strongly influenced by air quality as well as by ecosystems. This study investigated the spatiotemporal variations in the sulfur isotopic ratio (δ34S) in atmospheric deposition at eleven monitoring stations in Japan from 2011 to 2016 and estimated the amount of transboundary transported anthropogenic sulfate (TRB) deposition using mass balance calculations. The δ34S of sulfate in precipitation ranged from -0.42 to +22.7‰. Sea salt (SS), TRB, and domestic anthropogenic sources (DOM) were the dominant sources of sulfate deposition in Japan. TRB sulfate deposition was largest on the Sea of Japan side, with an annual average value of 1.5 ± 0.3-6.9 ± 0.5 mg m-2 d-1 (36-44%), followed by Mt. Happo (4.5 ± 0.1 mg m-2 d-1; 88%), the Pacific Ocean side (1.5 ± 0.8, 4.3 ± 0.9 mg m-2 d-1; 24-50%), and the remote islands in the North Pacific Ocean (1.1 ± 0.2, 2.0 ± 0.8 mg m-2 d-1; 19-32%). TRB sulfate deposition on the Sea of Japan side was 2-12 times higher in winter and 1-2 times higher in summer than that of DOM. In contrast, TRB sulfate deposition on the Pacific Ocean side was 1.5-3 times higher in summer than in winter due to high precipitation levels. In Tokyo, the annual contribution from DOM sulfate deposition is approximately three times higher than that from TRB. Annual TRB sulfate deposition is lowest at Ogasawara at 1.1 ± 0.2 mg m-2 d-1, and the annual oceanic DMS contribution to sulfate deposition is high, accounting for 1.3 mg m-2 d-1 (20 ± 6%). The contribution of Asian dust was estimated to be 1-5.2 mg m-2 d-1(3-6%), which occurred in a single Asian dust event on the Sea of Japan side.
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Affiliation(s)
- Y Inomata
- Kanazawa University, Kakuma, Kanazawa, Ishikawa 920-1156, Japan; Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan.
| | - T Ohizumi
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan
| | - T Saito
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan; Niigata Prefectural Institute of Public Health and Environmental Sciences, 314-1, Sowa, Niigata, Niigata 950-2144, Japan
| | - M Morohashi
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan
| | - N Yamashita
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan; Forestry and Forest Products Research Institute, 1 Matsunosato, Tsukuba, Ibaraki 305-8687, Japan
| | - M Takahashi
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan
| | - H Sase
- Asia Center for Air Pollution Research, 1182, Sowa, Niigata, Niigata 950-2144, Japan
| | - K Takahashi
- Japan Environmental Sanitation Center, 10-6 Yotsuyakami-cho, Kawasaki-ku, Kawasaki City, Kanagawa Prefecture 210-0828, Japan
| | - N Kaneyasu
- National Institute of Advanced Industrial Science and Technology, 16-1 Onogawa, Tsukuba 305-8569, Japan
| | - M Fujihara
- Shimane Prefectural Institute of Public Health and Environmental Sciences, 1-582, Nishimasasada cho, Matsue, Shimane 690-0122, Japan
| | - A Iwasaki
- Okinawa Prefectural Institute of Health and Environment, 1-17, Kanekadann, Uruma, Okinawa 904-2241, Japan
| | - K Nakagomi
- Nagano Environmental Conservation Research Institute, 1978 Komemura Amori Nagano, Nagano 380-0944, Japan
| | - T Shiroma
- Okinawa Prefectural Institute of Health and Environment, 1-17, Kanekadann, Uruma, Okinawa 904-2241, Japan
| | - T Yamaguchi
- Hokkaido Research Organization, 12-19, Nishi, Kitaku, Sapporo, Hokkaido 060-0819, Japan
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Waseda R, Miyahara N, Moroga T, Wakahara J, Mei H, Yamamoto L, Imamura N, Miyahara S, Shiraishi T, Iwasaki A. P2.03-52 Correlation Between Inflammatory Markers and Oncological Outcomes in Surgically Resected Non-Small Cell Lung Cancer. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.1499] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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8
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Shiraishi T, Sato T, Yamashita S, Iwasaki A. EP1.01-101 Transposition of the Pulmonary Veins for Mobilization of Rt-Middle and Lower Lobes for Safe Reconstruction After Carinal Rt-Upper Lobectomy. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Kono Y, Iwasaki A, Fujita T. Effect of surface charge, particle size, and modification by polyethylene glycol of liposomes on their association with Caco-2 cells across an unstirred water layer. Pharmazie 2018; 73:3-8. [PMID: 29441943 DOI: 10.1691/ph.2018.7110] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 09/29/2022]
Abstract
For the development of orally available liposomes, understanding the interaction of liposomes with the intestinal mucosa is important. An unstirred water layer (UWL) on the intestinal epithelium surface is a considerable permeability barrier for lipophilic drugs. Therefore, the effects of an UWL on liposome transport across intestinal epithelial cells must be elucidated. We evaluated the effects of the surface charge, particle size, and polyethylene glycol (PEG) modification of liposomes on their association with Caco-2 cells across an UWL. When the association of cationic liposomes with Caco-2 cells was evaluated under a reduction in UWL thickness by shaking, the uptake and/or amount of surface-bound cationic liposomes in cells was increased significantly in a shaking rate-dependent manner. The uptake and/or amount of surface-bound neutral liposomes were increased only at the highest shaking rate. No significant differences in the cellular association of anionic liposomes and PEG-modified liposomes were observed with or without shaking. The association of large liposomes with Caco-2 cells was affected considerably by an UWL compared with that of small liposomes. These results suggest that an UWL affects the surface binding and subsequent uptake of liposomes in Caco-2 cells according to their particle size, surface charge, and PEG modification.
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Han P, Hanlon D, Filler R, Robinson E, Zhang K, Fan R, Iwasaki A, Fahmy T, Edelson R. 111 Role of platelets in the differentiation of monocytes into dendritic cell-like antigen presenting cells. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.115] [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: 10/17/2022]
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11
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Waseda R, Yamashita S, Shiraishi T, Iwasaki A. P3.16-044 Feasible Outcome of Radical Extended Surgery in T4 Locally Advanced NSCLC; 23-Year Japanese Single Center Experience. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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12
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Moroga T, Hamatake D, Iwasaki A, Maekawa T. P2.16-020 Surgical Strategy for Synchronous Multiple Lung Cancer with Ground Glass Opacity. J Thorac Oncol 2017. [DOI: 10.1016/j.jtho.2017.09.1429] [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: 10/18/2022]
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13
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Iizuka K, Nishihira T, Takekawa H, Suzuki K, Igarashi H, Tsukahara Y, Suzuki A, Okamura M, Iwasaki A, Hirata K. Usefulness of acceleration time for assessment of stenosis in the internal carotid artery. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3674] [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: 11/25/2022]
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14
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Igarashi H, Okamura M, Okabe R, Takekawa H, Suzuki K, Iizuka K, Tsukahara Y, Suzuki A, Iwasaki A, Hirata K. Influence of pulsed wave doppler angle on diagnosis of internal carotid artery stenosis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3673] [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: 10/18/2022]
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15
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Harada K, Iwasaki A, Kato Y, Fujii N, Saito M, Tsuboi R. Cytomegalovirus oral ulcers in a patient with bullous pemphigoid. Clin Exp Dermatol 2016; 41:685-7. [PMID: 27335089 DOI: 10.1111/ced.12862] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/26/2015] [Indexed: 11/30/2022]
Affiliation(s)
- K Harada
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan.
| | - A Iwasaki
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - Y Kato
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - N Fujii
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - M Saito
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
| | - R Tsuboi
- Department of Dermatology, Tokyo Medical University, Shinjuku-ku, Tokyo, Japan
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Takayama T, Iwasaki A. OPTIMAL WAVELENGTH SELECTION ON HYPERSPECTRAL DATA WITH FUSED LASSO FOR BIOMASS ESTIMATION OF TROPICAL RAIN FOREST. ACTA ACUST UNITED AC 2016. [DOI: 10.5194/isprsannals-iii-8-101-2016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Above-ground biomass prediction of tropical rain forest using remote sensing data is of paramount importance to continuous large-area forest monitoring. Hyperspectral data can provide rich spectral information for the biomass prediction; however, the prediction accuracy is affected by a small-sample-size problem, which widely exists as overfitting in using high dimensional data where the number of training samples is smaller than the dimensionality of the samples due to limitation of require time, cost, and human resources for field surveys. A common approach to addressing this problem is reducing the dimensionality of dataset. Also, acquired hyperspectral data usually have low signal-to-noise ratio due to a narrow bandwidth and local or global shifts of peaks due to instrumental instability or small differences in considering practical measurement conditions. In this work, we propose a methodology based on fused lasso regression that select optimal bands for the biomass prediction model with encouraging sparsity and grouping, which solves the small-sample-size problem by the dimensionality reduction from the sparsity and the noise and peak shift problem by the grouping. The prediction model provided higher accuracy with root-mean-square error (RMSE) of 66.16 t/ha in the cross-validation than other methods; multiple linear analysis, partial least squares regression, and lasso regression. Furthermore, fusion of spectral and spatial information derived from texture index increased the prediction accuracy with RMSE of 62.62 t/ha. This analysis proves efficiency of fused lasso and image texture in biomass estimation of tropical forests.
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Motoyama H, Sato T, Iwasaki A, Takei Y, Kume T, Egawa S, Hiraguri K, Hashizume H, Yamanouchi K, Mimura H. Development of high-order harmonic focusing system based on ellipsoidal mirror. Rev Sci Instrum 2016; 87:051803. [PMID: 27250370 DOI: 10.1063/1.4950735] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2015] [Accepted: 03/11/2016] [Indexed: 06/05/2023]
Abstract
We have developed a focusing system for extreme ultraviolet light produced by high-order harmonic generation. An ellipsoidal mirror with a precise surface shape was fabricated and installed into the focusing system. A rigid mirror manipulator and a beam profiler were employed to perform precise and stable mirror alignment. As a demonstration of the focusing performance, high-order harmonics in the wavelength range of 13.5-19.5 nm were successfully focused into a 2.4 × 2.3 μm(2) spot.
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Affiliation(s)
- H Motoyama
- Department of Precision Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkuyo-ku, Tokyo 113-8656, Japan
| | - T Sato
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - A Iwasaki
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Y Takei
- Department of Precision Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkuyo-ku, Tokyo 113-8656, Japan
| | - T Kume
- Department of Precision Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkuyo-ku, Tokyo 113-8656, Japan
| | - S Egawa
- Department of Precision Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkuyo-ku, Tokyo 113-8656, Japan
| | - K Hiraguri
- Natsume Optical Corp., 3461 Kamichaya, Kanae, Iida, Nagano 395-0808, Japan
| | - H Hashizume
- Natsume Optical Corp., 3461 Kamichaya, Kanae, Iida, Nagano 395-0808, Japan
| | - K Yamanouchi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Mimura
- Department of Precision Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkuyo-ku, Tokyo 113-8656, Japan
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Shook B, Iwasaki A, Horsley V. 741 Identification of a specific subset of monocytes/macrophages that coordinates skin wound healing. J Invest Dermatol 2016. [DOI: 10.1016/j.jid.2016.02.784] [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: 10/21/2022]
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Ohbayashi Y, Nakai F, Iwasaki A, Nakai Y, Httori Y, Yamamoto, Nishiyama Y, Miyake M. The predictability of bisphosphonate-related osteonecrosis of the jaw using a quantitative analysis of bone scintigraphy. Int J Oral Maxillofac Surg 2015. [DOI: 10.1016/j.ijom.2015.08.264] [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: 11/24/2022]
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20
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Sawai F, Miki T, Iwasaki A, Ohbayashi Y, Miyake M, Matsui Y. Development of a training system using virtual reality for partial glossectomy. J Oral Maxillofac Surg 2014. [DOI: 10.1016/j.joms.2014.06.366] [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: 10/24/2022]
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21
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Togashi T, Takahashi E, Midorikawa K, Aoyama M, Yamakawa K, Sato T, Iwasaki A, Owada S, Yamanouchi K, Hara T, Matsubara S, Ohshima T, Otake Y, Tamasaku K, Tanaka H, Tanaka T, Tomizawa H, Watanabe T, Yabashi M, Ishikawa T. Extreme ultraviolet free electron laser seeded by high-order harmonic. Radiat Phys Chem Oxf Engl 1993 2013. [DOI: 10.1016/j.radphyschem.2013.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Iwasaki A, Sato T, Owada S, Togashi T, Takahashi E, Midorikawa K, Aoyama M, Yamakawa K, Matsubara S, Okayasu Y, Tomizawa H, Watanabe T, Nagasono M, Yabashi M, Ishikawa T, Yamanouchi K. Synchronization of FEL and high-order harmonics of ultrashort-pulsed laser for generating intense full-coherent EUV light pulses. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134101018] [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: 11/14/2022] Open
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23
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Roither S, Xie X, Schöffer M, Kartashov D, Zhang L, Iwasaki A, Xu H, Bubin S, Atkinson M, Varga K, Yamanouchi K, Baltuška A, Kitzler M. Highly Efficient Molecular Ionization Probed by Few-cycle Laser Pulses. EPJ Web of Conferences 2013. [DOI: 10.1051/epjconf/20134102005] [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] Open
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24
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Iwasaki A, Tashiro K, Kuwahara M, Matsuzoe D, Okabayashi K, Shiraishi T, Kawahara K, Shirakusa T. Expression of variant CD44, exon 6 in patients with metastatic pulmonary tumor. Oncol Rep 2012; 4:815-8. [PMID: 21590147 DOI: 10.3892/or.4.4.815] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
High expression ratios of CD44 variant 6 (CD44 V6) in patients with metastatic pulmonary tumor were found in those with primary lesions of cancer of the colon, uterus, larynx, liver and osteosarcoma. It was clarified that patients showing expression of CD44 variant 6 likely revealed pulmonary metastasis at earlier time following operations of primary cancer (p<0.05). CD44 V6, an adhesion molecule, was a factor to participate in pulmonary metastases from various organ cancers. No significant correlation was observed in survival between patients with CD44 V6 positive versus negative tumors, except laryngeal tumor after resection of primary or metastatic lung tumor. CD44 V6 related to its invasive and further metastatic functions in metastatic lung tumor. We suggest that cancer cells expressing the CD44 molecule especially V6 may adhere to vascular endothelium and hyaluronic acid in the lung. And cancer cells without this molecule liberated from the primary focuses hardly adhere to the pulmonary tissues supposedly resulting in delayed metastases and proliferations in the pulmonary tissues.
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Watanabe K, Mori T, Iwasaki A, Kimura C, Wakatsuki A. PP075. Endothelial dysfunction may be impaired by increased oxidative stress in preeclamptic women. Pregnancy Hypertens 2012; 2:281. [PMID: 26105396 DOI: 10.1016/j.preghy.2012.04.186] [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: 10/28/2022]
Abstract
INTRODUCTION The essential pathogenesis in preeclampsia is vasospasm induced by endothelial cell injury. The vascular endothelium regulates vascular smooth muscle tone by producing vasoconstrictors and vasodilators, such as nitric oxide (NO). Recently, it has been reported that the levels of oxidative stress are increased and they may impair endothelial NO production and induce endothelial dysfunction in preeclampsia. OBJECTIVES To determine whether maternal release of oxygen free radical and antioxidants are associated with maternal vascular endothelial cell injury, we measured serum parameters of oxidative stress and endothelial function during pregnancy in women with or without preeclampsia. METHODS We evaluated 20 participants with uncomplicated pregnancies, 15 with mild preeclampsia, and 18 with severe preeclampsia. Plasma concentrations were measured for derivatives of reactive oxygen metabolites (d-ROMs) and biological antioxidant potential (BAP) as markers of oxygen free radicals and antioxidants, respectively. Flow-mediated vasodilation (FMD) was also assessed as a marker of endothelial function. RESULTS D-ROMs were increased in the maternal blood of the severe preeclamptic group compared with the control group (681.0±239.0 vs 478.6±101.4 CARR U, P<0.001), but not in the mild preeclamptic group (562.0±106.5 CARR U). Plasma BAP levels did not change significant in all three groups. The proportion of d-ROMs to BAP was higher in the severe preeclamptic group than in controls (0.28±0.11 vs 0.21±0.05, P<0.01), but not in the mild preeclamptic group (0.24±0.08). FMD was significantly decreased in both preeclamptic groups (severe, 4.3±3.3%, P<0.001; mild, 6.5±3.6%, P<0.001) compared with controls (10.5±2.3%), but FMD in the severe preeclamptic group was significantly greater than in the mild preeclamptic group. A negative correlation between FMD and d-ROM concentrations was observed in all participants (r=-0.376, P<0.05), and the ratio of serum d-ROMsto BAP correlated negatively with FMD (r=-0.413, P<0.05) in all participants. CONCLUSION We found that the production of oxygen free radicals increased, but not the production of antioxidants which decreased, as a result, an imbalance between reactive oxygen species formation and antioxidant defence mechanisms may have impaired endothelial function in preeclamptic women.
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Affiliation(s)
- K Watanabe
- Aichi Medical University School of Medicine, Nagakute, Japan
| | - T Mori
- Aichi Medical University School of Medicine, Nagakute, Japan
| | - A Iwasaki
- Aichi Medical University School of Medicine, Nagakute, Japan
| | - C Kimura
- Aichi Medical University School of Medicine, Nagakute, Japan
| | - A Wakatsuki
- Aichi Medical University School of Medicine, Nagakute, Japan
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Obuchi T, Imakiire T, Hamatake D, Nakashima H, Hamanaka W, Yanagisawa J, Shiraishi T, Iwasaki A. Video-assisted thoracic surgery for lung cancer in hemodialysis patients. Asian J Endosc Surg 2011; 4:157-60. [PMID: 22776299 DOI: 10.1111/j.1758-5910.2011.00099.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
INTRODUCTION In recent years, the number of hemodialysis patients has been continuously increasing. At the same time, the use of video-assisted thoracic surgery (VATS) for lung cancer has also increased. However, reports of the outcome of VATS in hemodialysis patients are still quite rare. METHODS From 1995 to 2011, 14 patients with non-small cell lung cancer who were also receiving hemodialysis underwent lung resection by open thoracotomy or VATS at our institution. These patients were divided into two groups as follows: open (five men and four women, mean age: 68.7 years) and (2) VATS (three men and two women, mean age: 64.0 years). We compared the clinical outcomes of these two groups. RESULTS Lobectomy was performed in eight patients in the open group, including one patient who also underwent a pneumonectomy, and in four patients in the VATS group, including one who also underwent a wedge resection. There were no significant difference between the groups' operation times, intraoperative blood loss, length of postoperative chest drainage, and length of postoperative hospitalization. There were no hospital deaths in either group. The 5-year survival rate was 42.9% in the open group and 37.5% in the VATS group. This difference was not significant (P=0.73). CONCLUSION VATS lung resection for lung cancer patients on hemodialysis is considered an acceptable treatment modality, though the long-term survival rate of such patients is relatively low, which can be attributed to the diseases underlying the need for hemodialysis.
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Affiliation(s)
- T Obuchi
- Department of Thoracic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka, Japan.
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Obuchi T, Miyahara S, Higuchi T, Hamatake D, Imakiire T, Ueno T, Yoshinaga Y, Shiraishi T, Shirakusa T, Iwasaki A. Prognosis of patients after pulmonary artery plasty for non-small cell lung cancer. Thorac Cardiovasc Surg 2010; 57:484-8. [PMID: 20013624 DOI: 10.1055/s-0029-1185850] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
OBJECTIVE We evaluated the clinical outcomes of patients after lung resection with pulmonary artery (PA) plasty for non-small cell lung cancer (NSCLC). METHODS From 1995 to 2006, 36 patients (26 males and 10 females) with NSCLC underwent lobectomy or segmentectomy with PA plasty at our institution. The mean age of the patients was 65.9 years old (range 45-87 years old). There were 17 left upper lobectomies, 10 right upper lobectomies, five left lower lobectomies, two right upper-and-middle bilobectomies, one right lower lobectomy, and one left upper division segmentectomy. Both bronchoplasty and PA plasty were performed in 15 patients. Six patients received preoperative chemotherapy, and one had preoperative radiotherapy. RESULTS The postoperative morbidity rate was 27.8 % (10/36), and the mortality rate (30 days) was 2.8 % (1/36). One patient underwent completion pneumonectomy on postoperative day 13. Macroscopic residual cancer was identified in two patients at the thoracic wall and aorta, respectively; microscopic residual cancers were identified in two patients at the stumps of the pulmonary artery and in one patient at the bronchial stump. Postoperative radiation therapy was additionally given to those four patients, except one. The 5-year survival rate for all patients was 51.8 %. There was no significant difference in the 5-year survival rate between clinical N (cN) 0-1 patients and cN2 patients. However, in pathological N (pN) 0-1 patients, the 5-year survival rate was significantly better than that of pN2 patients (71.9 % versus 0.0 %; P < 0.001). CONCLUSIONS PA plasty for NSCLC is acceptable and highly recommended for pN0-1 patients. Strict patient selection should be considered so as to avoid surgical operations in patients with pN2 staging.
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Affiliation(s)
- T Obuchi
- Thoracic Surgery, Fukuoka University, Fukuoka, Japan.
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Kitamura H, Terunuma N, Kurosaki S, Hata K, Ide R, Kuga H, Kakiuchi N, Masuda M, Totsuzaki T, Osato A, Uchino B, Kitahara K, Iwasaki A, Yoshizumi K, Morimoto Y, Kasai H, Murase T, Higashi T. Cross-sectional study on respiratory effect of toner-exposed work in manufacturing plants, Japan: pulmonary function, blood cells, and biochemical markers. Hum Exp Toxicol 2009; 28:331-8. [PMID: 19755444 DOI: 10.1177/0960327109105152] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The aim of the study is to examine the relationship between toner-exposed work and health indices related to respiratory disorders and to confirm the baseline of a cohort study to clarify the effect of toner exposure in manufacturing plants. Subjects were 1614 male workers (809 toner-exposed workers and 805 referents) who were engaged in toner manufacturing plants in Japan (Fuji Xerox Co., Ltd). The age of subjects was from 19 to 59 years, and the average age was 40.2 years(median 40 years, SD 7.67). We conducted a pulmonary function test (PEFR, VC, FVC, FEV(1.0)%, V25/Ht) and a blood cell test (RBC, Hb, Hct, Plt, WBC, cell contents of WBC) and measured biochemical indices in blood (ALT, AST, gamma-GTP, CRP, IgE) and 8-hydroxy-2'-deoxyguanosine (8-OHdG) in urine. Student t-test and logistic regression analysis were applied to compare between the toner-exposed workers and the referents and to analyze the relationship among indices of effects and independent factors. There was no significant difference between the two groups in blood cell count and biochemical indices. Inflammation- and allergy-related markers such as 8OHdG and IgE also showed no significant difference between toner-exposed workers and the referents. The influence of smoking on pulmonary function indices was observed, but there was no relationship between the pulmonary function and toner-exposed work. In this article, we report a preliminary cross-sectional analysis in the subjects of a cohort study. No difference in pulmonary function indices was observed between the toner-exposed workers and the referents, and there was no consistent relationship between the exposure status and examined indices; however, the prevalence of subjective respiratory symptoms was higher in the exposed workers as presented in another report. Further analysis is important in the ongoing cohort study to clarify the effect of toner exposure on respiratory systems.
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Affiliation(s)
- H Kitamura
- Institute of industrial and Ecological Sciences, University of occupational and Environmental Health, Japan, Kitakyusyu, Japan.
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Obuchi T, Iwasaki A. [Thoracic drainage]. Kyobu Geka 2009; 62:744-748. [PMID: 20715703] [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: 05/29/2023]
Abstract
The thoracic drainage system is a sophisticated and useful technology, especially in thoracic surgery. therefore, lung resections are able to be performed safely in spite of air leaks which are a common problem after pulmonary resection. The thoracic drainage system is called the 3 bottles system, which are consisted of a drainage-bottle, an underwater-seal-bottle, and a continuous low-pressure-suction devise. Based on this basic structure, a lot of convenient thoracic drainage products such as a small thoracic drainage kit for pneumothorax have been developed. Some chest tubes which changed tubal form for efficient drainage are developed as well. However, each product has both advantages and disadvantages, then, we should understand characteristics of those new products and know the physiology of respiratory, when we use them.
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Affiliation(s)
- Toshiro Obuchi
- Department of Thoracic, Breast, Endocrine, and Pediatric Surgery, Fukuoka University, Fukuoka, Japan
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Abstract
Dendritic cells (DCs) and macrophages are antigen-presenting cells (APCs) that are important in innate immune defense as well as in the generation and regulation of adaptive immunity against a wide array of pathogens. The genitourinary (GU) tract, which serves an important reproductive function, is constantly exposed to numerous agents of sexually transmitted infections (STIs). To combat these STIs, several subsets of DCs and macrophages are strategically localized within the GU tract. In the female genital mucosa, recruitment and function of these APCs are uniquely governed by sex hormones. This review summarizes the latest advances in our understanding of DCs and macrophages in the GU tract with respect to their subsets, lineage, and function. In addition, we discuss the divergent roles of these cells in immune defense against STIs as well as in maternal tolerance to the fetus.
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Affiliation(s)
- N Iijima
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - JM Thompson
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
| | - A Iwasaki
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, USA
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Shiraishi T, Iwasaki A. [Sleeve lobectomy for primary lung cancer]. Kyobu Geka 2008; 61:957-961. [PMID: 18939432] [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: 05/26/2023]
Abstract
We reviewed Fukuoka University Hospital thoracic surgery data base of 60 sleeve lobectomy (SL) and 40 pneumonectomy (PN) [for T1-3 disease] for primary lung cancer during 1993-2006. Morbidity rates were 20.0% and 37.5% in SL and PN group, respectively (p = 0.054). Three and 1 patient from PN and SL group, respectively, presented with bronchial anastomotic complications. Multivariate analysis showed that adjuvant chemotherapy and preoperative concomitant respiratory disease, but not the surgical procedures SL or PN, were risk factors for surgical morbidity. SL requires special consideration on its surgical technique either bronchial anastomosis or associated angioplastic procedure, however, it is safe and valuable less invasive surgical option especially for elderly patients.
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Affiliation(s)
- T Shiraishi
- Department of Thoracic Surgery, Fukuoka University, Fukuoka, Japan
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Fadiel A, Lee HH, Demir N, Richman S, Iwasaki A, Connell K, Naftolin F. Ezrin is a key element in the human vagina. Maturitas 2008; 60:31-41. [PMID: 18486367 DOI: 10.1016/j.maturitas.2008.03.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2007] [Revised: 03/14/2008] [Accepted: 03/17/2008] [Indexed: 12/01/2022]
Abstract
OBJECTIVE The vagina is a complex tubular structure that has reproductive, support and barrier functions. These depend on the cytoarchitecture of the vaginal cells, which is controlled by key proteins. Cytoskeletal proteins determine cell polarity and membrane specializations by integrating the actin cytoskeleton with cell membranes. This integration is the domain of cytoskeletal proteins including the MERM protein family (moesin-ezrin-radixin-Merlin). Nothing is known about the cyto-localization of the MERM's in the vaginal epithelium or how it influences the cytoarchitecture of the vaginal epithelium and stroma. DESIGN Full-thickness human vaginal fornix samples were obtained from 20 normal human specimens obtained at surgery for pelvic relaxation. Light- and electron microscopical immunohistochemistry (IHC) were used to identify and study activation and cellular localization of immuno-reactive-ezrin (ir-ezrin), a prototypical MERM. RESULTS Ir-ezrin was identified in the stratified squamous vaginal epithelium and connective tissue (fibroblasts, blood vessels and leucocytes). "H" scoring indicated that ir-ezrin staining is denser in the vaginal epithelium than in other layers, that the ir-ezrin staining was associated with increased keratinization and with the size of the tight junctions (p<0.01). Both the amounts and localization of ir-ezrin were associated with high levels of estrogen, identified by the menstrual history and keratinization of the superficial vaginal epithelium. The density of stromal ir-ezrin was increased in the presence of dense epithelial keratinization. Immuno-reactive-ezrin staining was most pronounced near the cell membranes of both keratinized and non-keratinized epithelium, indicating that ezrin activation (unfolding and movement to the membrane) had occurred. Ultra-structural examination of the epithelium showed intra-cellular ir-ezrin to be localized to junctional complexes that have been associated with decreased mucosal penetration by microorganisms. Ir-ezrin was widely distributed throughout stromal fibro-muscular cell, vessels and immunocytes. CONCLUSIONS MERM's, represented by ezrin, are widely present in the vaginal wall. This has implications for the strength and resilience of this tubular structure and may be the case in other internal genital tissues. Ezrin's localization and association with cell specializations indicate that in the vagina, as in other tissues, ezrin likely modulates vaginal cell-cell interactions including the changing vaginal cellular interface with the external environment, the regulation of the elasticity of the vagina, and the regulation of microbial and chemical traffic that determine the pH and microbial environment of the vagina. In other work we have shown that ezrin expression is induced by estradiol. The increase of ir-ezrin staining during the appearance of keratinization and maturation of the vaginal cytology indicates that estrogen may regulate vaginal ezrin and thereby the properties of the vaginal wall and epithelium.
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Affiliation(s)
- A Fadiel
- Department of Obstetrics and Gynecology, New York University, 550 First Avenue, TH528, New York, NY 10016, United States
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Abstract
BACKGROUND Only a few simulators are available which offer training in video-assisted thoracic surgery (VATS). We have developed a VATS training model for surgeons. METHODS The simulator consists of a training module housing three disposable components: the lung (made of polyurethane), the bronchus, and the artificial circulatory pulmonary vessels (made of polyvinyl chloride), connected to a pump. VATS procedures were videotaped and evaluated using a checklist assessment method. RESULTS This unique module has been tested at several VATS seminars in Japan. In the questionnaire, training participants strongly agreed that the trainer was helpful and prepared them well for VATS lobectomy prior to performing actual surgery. Evaluation of the dexterity score for thoracoscopic surgery with our simulator correlated with the surgeons' experience with actual surgery. Technical factors were well taught using this model. CONCLUSIONS Our unique trainer may enhance the skill of VATS surgeons at a national level.
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Affiliation(s)
- A Iwasaki
- Department of Thoracic Surgery, School of Medicine, Fukuoka University, Fukuoka, Japan.
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Shiraishi T, Hiratsuka M, Yoshinaga Y, Yamamoto S, Iwasaki A, Shirakusa T. Thoracoscopic Lobectomy with Systemic Lymph Node Dissection for Lymph Node Positive Non-Small Cell Lung Cancer - Is Thoracoscopic Lymph Node Dissection Feasible? Thorac Cardiovasc Surg 2008; 56:162-6. [DOI: 10.1055/s-2007-989368] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Iwasaki A, Hamatake D, Hamanaka W, Hamada T, Shirakusa T, Yamamoto S, Shiraishi T. Is Systemic Node Dissection for Accuracy Staging in Clinical Stage I Non-Small Cell Lung Cancer Worthwhile in the Elderly? Thorac Cardiovasc Surg 2008; 56:37-41. [DOI: 10.1055/s-2007-965057] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Iwasaki A, Hamanaka W, Hamada T, Hiratsuka M, Yamamoto S, Shiraishi T, Shirakusa T. Comparison between a Case-Matched Analysis of Left Upper Lobe Trisegmentectomy and Left Upper Lobectomy for Small Size Lung Cancer Located in the Upper Division. Thorac Cardiovasc Surg 2007; 55:454-7. [PMID: 17902069 DOI: 10.1055/s-2007-965406] [Citation(s) in RCA: 19] [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: 10/22/2022]
Abstract
BACKGROUND Although an increasing number of approaches for pulmonary segmentectomy to treat early lung cancer are being used, there have been few reports on left upper lobe trisegmentectomy, which is midway between single segmentectomy and lobectomy, for lung cancer. METHODS We retrospectively reviewed the medical charts of 86 clinical stage I case-matched patients with a tumor size of less than 2.0 cm in diameter located in the left upper division who underwent resection between June 1998 and December 2005. The patients were divided into two groups as follows: LTS (31), left upper lobe trisegmentectomy; LUL (55), left upper lobectomy. We evaluated these groups with respect to several factors. RESULTS The characteristics of the two groups (LTS vs. LUL) demonstrated no significant differences with respect to gender, histological type, tumor size, or upstaging of pathological node, or the mode of video-assisted thoracic surgery (VATS). Patients with LTS had a significantly lower pulmonary function compared to the LUL group. There were no significant differences between the two groups with respect to factors such as blood loss and duration of chest tube drainage. Morbidity and recurrence rates did not differ between the two groups, and there was no mortality in our series. The overall survival rate at 5 years was 69.7 % in the LTS and 72.5 % in the LUL group. There was no significant difference in survival rates between the LTS and the LUL group after resection. CONCLUSION LTS may be suitable as a standard treatment if the tumor is small and the suspected margins are well away from the lingula.
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Affiliation(s)
- A Iwasaki
- Department of Thoracic Surgery, School of Medicine, Fukuoka University, Fukuoka, Japan.
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Maki K, Yamamoto S, Ishii H, Munakata M, Hiratsuka M, Yoshinaga Y, Shiraishi T, Iwasaki A, Shirakusa T. [Successful treatment for descending necrotizing mediastinitis; report of a case]. Kyobu Geka 2007; 60:165-7. [PMID: 17305086] [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: 05/14/2023]
Abstract
A case of a 55-year-old man with descending necrotizing mediastinitis (DNM) after a tooth removal was reported. Chest computed tomography (CT) showed a fluid collection in the right thorax, in the cervical region and in the mediastinum. The patient underwent cervical drainage and thoracoscopic pleural dissective drainage. The cervical and right anterior thoracic drain was removed on the 6th day and posterior drain was removed on the 8th day after the operation. The patient was discharged on the postoperative day 13, and showed no recurrence.
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Affiliation(s)
- K Maki
- Department of Second Surgery, School of Medicine, Fukuoka University, Fukuoka, Japan
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Yamasaki S, Makihata S, Hiratsuka M, Hamatake D, Yamamoto S, Shiraishi T, Iwasaki A, Masuzaki T, Tanaka K, Shirakusa T. [Clinical features of thoracic injury; special reference to diaphragmatic injury]. Kyobu Geka 2006; 59:1027-31. [PMID: 17058667] [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: 05/12/2023]
Abstract
UNLABELLED We investigated the clinical feature of thoracic injury patients, mainly with diaphragmatic injury. From 1993 to 2005, 739 patients with thoracic injury were treated at our life-saving emergency center. There were more blunt trauma patients than penetrating injury patients (693 cases vs 46 cases). Regarding the thoracic injury patients, the causes of trauma were traffic injury in 462 (62.5%), unexpected accident including work place accident in 153 (20.7%), suicide in 90 (12.2%), and assault in 34 (4.6%). As the numbers of injured organs increased, the mortality rate increased. Among 156 patients with cardiopulmonary arrest on admission, 155 patients died. This result suggested that saving the life of patients presenting with cardiopulmonary arrest on admission is extremely difficult. Thirty-eight cases (5.1%) required surgical treatment, and surgery to repair diaphragmatic injury was performed in 14 cases. In 6 cases of diaphragmatic injury, thoracoscopy was performed during the examination and/or surgery. CONCLUSION Urgently transporting thoracic injury patients to hospital before the onset of cardiopulmonary arrest is therefore essential in order to reduce the mortality rate of these patients. In addition, thoracoscopy is very useful for both examining and treating traumatic diaphragmatic injury patients.
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Affiliation(s)
- Shigemichi Yamasaki
- Emergency and Critical Care Center, Fukuoka University Hospital, Fukuoka, Japan
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Iwasaki A, Shirakusa T, Miyoshi T, Hamada T, Enatsu S, Maekawa S, Hiratsuka M. Prognostic significance of subcarinal station in non-small cell lung cancer with T1-3 N2 disease. Thorac Cardiovasc Surg 2006; 54:42-6. [PMID: 16485188 DOI: 10.1055/s-2005-865828] [Citation(s) in RCA: 8] [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: 10/25/2022]
Abstract
BACKGROUND Surgical resection may continue to offer the best chance of long-term survival for patients with non-small cell lung cancer (NSCLC). Generally, patients with N2 NSCLC have a poor prognosis. However, the surgical treatment of patients with N2 remains controversial as in these patients, some N2 subgroups have better prognoses than others. The objective of the current study was to evaluate the factors associated with N2, and to determine whether such factors are reliable predictors of survival. METHODS We retrospectively reviewed 142 non-small cell lung cancer patients with T1-3 N2 in whom a curative approach had been attempted between January 1994 and December 2003. The patients were consequently divided into four groups (NS-1, no subcarinal involvement and without N1; NS-2, no subcarinal involvement and with N1; SI-1, subcarinal involvement and without upper mediastinal site; SI-2, subcarinal involvement and with upper mediastinal site). We also evaluated two groups for N2 stations (single-station N2 versus multiple-station N2). Multivariate analysis by Cox's proportional hazards regression model was performed to identify the prognosis. RESULTS Lobectomy was carried out in 105 of the patients; bilobectomy in 10, and pneumonectomy in 27. The patients with T1-3 N2 disease showed survival rates of 34.1 % at 3 years and 24.1 % at 5 years. The overall survival rates at 3 years and 5 years were as follows: NS-1, 56.3 % and 43.2 %; NS-2, 35.4 % and 29.5 %; SI-1, 16.7 % and 0 %; SI-2, 15.4 % and 0 %, respectively. The NS-1 group had better prognoses than the other groups. There was a significant difference in survival rates within each group ( p = 0.0005). In univariate analysis, the type of surgery, type of subcarinal involvement, and multiple-station N2 were significantly associated with prognosis. Multivariate analysis showed that NS-1 was only found to be an independent prognostic factor in cases of T1-3 N2 disease ( p = 0.0018). NS-2 was not an independent factor but tended toward significance ( p = 0.0681). But multiple-station N2 was not an independent factor ( p = 0.1549). CONCLUSIONS Surgery for patients with T1-3 N2 NSCLC might be acceptable if subcarinal lymph node metastasis is predicted to be absent.
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Affiliation(s)
- A Iwasaki
- Second Department of Surgery, School of Medicine, Fukuoka University, Japan.
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Abstract
BACKGROUND Patients with second primary lung cancer (SPLC) have a heterogeneous background. The optimum modality of treatment for SPLC patients has not yet been determined. The objective of this study was to attempt to identify the value of less vigorous therapies such as segmentectomy or video-assisted thoracic surgery (VATS) in SPLC. METHODS We retrospectively reviewed the medical records of 46 patients who underwent resection for SPLC in Fukuoka University Hospital between January 1994 and April 2005. Patients were separated into two groups (LVT: less vigorous therapy including segmentectomy or VATS lobectomy; LCT: lobectomy with conventional thoracotomy). The characteristics of each group were evaluated and survival rates were analyzed at 5 years after surgery. RESULTS The mean amount of blood loss was found to be significantly different ( P = 0.0062) with 59.44 +/- 14.00 ml for LVT cases and 254.48 +/- 63.62 ml for LCT. None of the LVT patients experienced postoperative complications. The 5-year survival rate was 62.7 % for LVT and 57.7 % for LCT. There was no significant difference in survival rates between these groups. CONCLUSIONS Although differences were seen in the characteristics, less invasive surgery such as VATS or segmentectomy may be a feasible treatment for SPLC.
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Affiliation(s)
- A Iwasaki
- Second Department of Surgery, School of Medicine, Fukuoka University, 45-1, 7-chome Nanakuma, Jonan-ku, Fukuoka 814-0180, Japan.
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Shiraishi T, Shirakusa T, Miyoshi T, Hiratsuka M, Yamamoto S, Iwasaki A. A Completely Thoracoscopic Lobectomy/Segmentectomy for Primary Lung Cancer - Technique, Feasibility, and Advantages. Thorac Cardiovasc Surg 2006; 54:202-7. [PMID: 16639684 DOI: 10.1055/s-2005-872997] [Citation(s) in RCA: 20] [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: 10/24/2022]
Abstract
INTRODUCTION A completely thoracoscopic lobectomy/segmentectomy for primary lung cancer was designed to maximize the benefits of this type of minimally invasive surgery. The technique, feasibility, and advantages of this surgical modality over the conventional procedure were investigated. MATERIALS AND METHODS Between January 2003 and December 2004, 38 patients underwent a lobectomy (n = 30) or segmentectomy (n = 8) for clinical stage IA primary lung cancer. A resection using a standard thoracotomy (Thoracotomy Group) was performed in 19 patients, and a completely thoracoscopic resection was performed in 10 cases (CTR Group). Conventional video-assisted thoracic surgery with a mini-thoracotomy was performed in 9 cases. RESULTS All CTR lobectomies or segmentectomies were carried out safely without any major complications. The number of resected mediastinal lymph nodes was similar in both groups. There was a tendency for the hospital stay to be somewhat shorter in the CTR Group. With respect to postoperative pain as evaluated by a visual analogue scale (VAS), the CTR Group showed a significantly lower level of pain in comparison to the Thoracotomy Group ( P = 0.024 on day 2). CONCLUSIONS We concluded that a complete thoracoscopic lung resection is a safe and technically feasible surgical procedure which enables us to make thoracoscopic lung resections less invasive.
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Affiliation(s)
- T Shiraishi
- Department of Surgery II, Fukuoka University School of Medicine, Fukuoka, Japan.
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Iwasaki A, Shirakusa T, Enatsu S, Maekawa S, Hamada T, Hamasaki M. The value of tumor volume in surgically resected non-small cell lung cancer. Thorac Cardiovasc Surg 2006; 54:112-6. [PMID: 16541352 DOI: 10.1055/s-2005-865877] [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: 10/24/2022]
Abstract
BACKGROUND The aim of this study was to evaluate whether or not tumor volume (TV) has an impact on survival in non-small cell lung cancer. METHODS In a retrospective analysis of 385 cases with NSCLC who underwent curative surgery between 1994 and 2003, we calculated the tumor volume by using an ellipsoidal formula. The patients were grouped according to TV as determined by histograms. Gender, age, histology, nodal involvement, size, and TV were analyzed. Multivariate analysis by Cox's proportional hazards regression model was performed to identify the prognosis. RESULTS Cases of N0 showed a significantly lower TV than cases with other N statuses (p < 0.05). A significant difference was also observed between TV and histology or gender. The 189 patients belonging to the small volume group (SVG) (range, 0.105 to 9.265 cm3) had a significantly better overall survival rate than the other 196 patients in the large volume group (LVG) (9.266-366.522 cm3). With univariate analysis, gender, age, nodal involvement, size, and TV were significantly associated with prognosis. Multivariate analysis showed that only gender (p = 0.0184) and nodal involvement (p = 0.0001) were significantly independent prognostic factors. The size factor was not significant (p = 0.5285). However, TV was not an independent factor, but trending toward significance (p = 0.0801). CONCLUSIONS Although TV provides no independent prognostic information with multivariate analysis, TV in NSCLC should be considered using volumetric measurement with a three-dimensional CT approach prior to surgery or treatment planning.
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Affiliation(s)
- A Iwasaki
- Second Department of Surgery, School of Medicine, Fukuoka University, Jonan-ku, Fukuoka, Japan.
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Abstract
This article describes an EPR spectrometer specifically designed and constructed for EPR spectroscopy in humans. The spectrometer is based on a permanent magnet, suitable for measurements at 1200 MHz. The magnet has a full 50 cm gap between the poles, which facilitates accurate and comfortable placement of the subject for the EPR measurement at any location on the human body. The bridge includes features to facilitate clinical operations, including an indicator for phasing of the reference arm and a 2 level RF amplifier. Resonators with holders for each type and site of measurement have been developed that comfortably position the resonator and the patient and prevent artifacts due to motion. The initial applications for which the spectrometer has been designed are for oximetry using loops on the surface, oximetry using implanted resonators for measuring deep sites, and measurements in the teeth for determination of exposures to clinically significant doses of ionizing radiation.
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Affiliation(s)
- I Salikhov
- EPR Center for the Study of Viable Systems, Department of Diagnostic Radiology, Dartmouth Medical School, Hanover, New Hampshire 03755, USA
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Yoshinaga Y, Enatsu S, Iwasaki A, Shirakusa T. [Surgical treatment for primary non-small cell lung cancer with synchronous brain metastases]. Kyobu Geka 2006; 59:41-5. [PMID: 16440684] [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: 05/06/2023]
Abstract
The brain is one of the most common sites of metastasis from lung cancer. The strategies of treatment for non-small cell lung cancer patient with synchronous brain metastases (stage IV) is controversial. We evaluate retrospectively the effectiveness of surgical treatment for these patients. Forty patients were divided into 3 groups on the basis of surgical treatment, group A of patients received both lung and brain resection, group B of patients received lung resection plus gamma knife therapy, group C of patients received brain resection. Median survival from the date of diagnosis of brain metastasis was as follows: group A 331 days, group B 151 days and group C 92 days. Univariate analysis revealed that adenocarcinoma histology and serum LDH significantly affected survival. Multivariate analysis found that only adeocarcinoma histology also affected the survival. It is concluded that surgical treatment may acceptable in selected group of non-small cell lung cancer patients with synchronous brain metastases.
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Affiliation(s)
- Y Yoshinaga
- Department of Thoracic Surgery, St. Mary's Hospital, Kerume, Japan
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Iwasaki A, Yamamoto S, Yoshinaga Y, Shirakusa T. [Review of the surgical treatment in superior sulcus tumor]. Kyobu Geka 2006; 59:53-60. [PMID: 16440686] [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: 05/06/2023]
Abstract
The rarity of the superior sulcus tumor has led to varying treatment techniques. Generally, radiation therapy followed by surgery has been used. En bloc resection combined with lobectomy and nodal dissection remains standard therapy. The unique location of this tumor, surgical approach thought to be important. Involvement of the anterior areas such as subclavian vessels can be resected by anterior transcervical approach, and vertebral body or brachial plexus through the classic Shaw Paulson approach. Preoperative computed tomography (CT) or magnetic resonance imaging (MRI) is beneficial to the evaluation of the vessels, nerves, and surgical planning. Recent studies showed that induction concurrent chemoradiation therapy improved the resectability and curability. This article reviews the treatment of superior sulcus tumor.
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Affiliation(s)
- A Iwasaki
- Department of Second Surgery, School of Medicine, Fukuoka University, Fukuoka, Japan
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Iwasaki A, Shirakusa T, Yamashita Y, Noritomi T, Maekawa T, Hamada T. Characteristic Differences between Patients Who Have Undergone Surgical Treatment for Lung Metastasis or Hepatic Metastasis From Colorectal Cancer. Thorac Cardiovasc Surg 2005; 53:358-64. [PMID: 16311973 DOI: 10.1055/s-2005-865758] [Citation(s) in RCA: 11] [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] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
OBJECTIVE The characteristic differences between patients with lung or liver metastases from colorectal carcinoma (CRC) have not yet been clarified. A small group of these patients demonstrate a better prognosis, and the selection criteria for resection of liver and/or lung metastasis are not well defined. It is important to compare and analyze the most common metastatic sites, which include liver metastases and lung metastases. The objective of this study was to compare the characteristics of the two groups in order to identify patients who benefitted from surgical resection of CRC. METHODS We retrospectively reviewed the medical charts of 80 patients who had undergone resection for liver or lung metastasis from CRC in Fukuoka University Hospital between June 1991 and December 2004. These patients were grouped according to surgical therapy received for the metastases, and separated into two groups, as follows: LUM, lung metastases resection; LIM, liver metastases resection. We evaluated these groups for a set of several factors. RESULTS The characteristic factors between the two groups (LUM vs. LIM) demonstrated significant differences according to histological differentiation, venous invasion, and lymphatic permeation. There was a statistical difference in the disease-free interval (DFI) between the two groups (947.06 +/- 840.39 days in LUM vs. 246.03 +/- 229.26 days in LIM). Although serum CEA levels at resection of metastasis showed significant differences between the groups (LUM, 13.25 +/- 31.55 ng/ml; LIM, 55.21 +/- 99.52 ng/ml), the primary serum CEA levels were not significantly different. Overall survival rates at 5 years were 37.0 % for LUM and 42.8 % for LIM. There was no significant difference in the survival rate of the LUM vs. the LIM group after resection of metastasis. The Cox proportional hazards regression model was used to determine serum CEA status at the time of the metastases and showed a significant difference indicating poor prognosis for patients with LUM, but the results were not significant for LIM cases. CONCLUSIONS Candidates for surgical treatment for lung or liver metastases from CRC may be an acceptable for the same valuable approach, even if characteristic differences were observed in each group.
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Affiliation(s)
- A Iwasaki
- Second Department of Surgery, School of Medicine, Fukuoka University, Japan.
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Shiraishi T, Shirakusa T, Miyoshi T, Yamamoto S, Hiratsuka M, Iwasaki A, Kawahara K. Extended Resection of T4 Lung Cancer with Invasion of the Aorta: Is It Justified? Thorac Cardiovasc Surg 2005; 53:375-9. [PMID: 16311976 DOI: 10.1055/s-2005-865678] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [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: 10/25/2022]
Abstract
BACKGROUND We report our 10-year experience of performing surgical resection of T4 lung cancer invading the thoracic aorta. PATIENTS AND METHODS From 1994 to 2004, sixteen patients with T4 primary lung cancer with local invasion of the thoracic aorta underwent tumor resection. Surgical resection included 8 pneumonectomies and 8 lobectomies. The histologic type was squamous cell carcinoma in 7 patients, adenocarcinoma in 7, large cell carcinoma in 1, and small cell carcinoma in 1. Complete resection of the tumor with mediastinal lymph node dissection was achieved in 8 patients (50 %), while the resection was incomplete in the other 8 cases. RESULTS The overall cumulative survival of the 16 patients at 3 and 5 years was 34.7 % and 17.4 %, respectively. The survival of the patients in the complete resection group was found to be 36.5 % at 5 years, with 2 patients surviving more than 5 years without a recurrence, which was significantly better than that of the incomplete resection group ( p = 0.005). CONCLUSIONS Extended aortic resection with primary lung cancer is complex and possibly high risk, but can achieve long-term survival in selected patients. Surgical resection should be considered as a treatment option for T4 lung cancer for this T4 subcategory.
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Affiliation(s)
- T Shiraishi
- Department of Surgery II, Fukuoka University School of Medicine, Fukuoka-city, Fukuoka, Japan.
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Shiraishi T, Shirakusa T, Ninomiya H, Hiratsuka M, Yamamoto S, Iwasaki A, Tashiro T. Penetration to the aortic wall by a metallic airway stent. A successfully treated case with left pneumonectomy and aortic repair. J Cardiovasc Surg (Torino) 2005; 46:473-5. [PMID: 16278637] [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: 05/05/2023]
Abstract
Metallic airway stents were used widely at the beginning of airway stent use, but an accumulation of cases has revealed complications due to their use. A patient who received a Gianturco Z stent for bronchial tuberculosis suffered massive haemoptysis due to stent migration into the aortic wall. Left pneumonectomy with aortic repair was successfully performed. We suggest that metallic stents should not be used for benign airway palliation, as they may later cause life-threatening complications.
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Affiliation(s)
- T Shiraishi
- Department of Surgery II, Fukuoka University School of Medicine, Fukuoka, Japan.
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Hiratsuka M, Miyoshi T, Yamamoto S, Shiraishi T, Iwasaki A, Shirakusa T. [Treatment strategy for patients, with locally advanced non-small cell lung cancer]. Kyobu Geka 2005; 58:944-8. [PMID: 16235840] [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: 05/04/2023]
Abstract
A total of 89 patients with locally advanced lung cancer (pT3-4N0-1) underwent pulmonary resection from April 1994 to April 2003 at our institutions. The overall 5-year survival rate of the 89 patients was 35.5%. No significant difference in the 5-year survival rate was found according to the following variables: histologic type, type of operation, number of resected organs, performance of adjuvant therapy and pulmonary function. In patients with pN1 disease, when patients with nodal metastasis were divided into patients with hilar (# 10) or lobar (# 11 approximately 13) metastasis, the survival rate of lobar metastasis group was superior to those of hilar metastasis group, but not significantly. In patients with pN1 disease, 5 patients were survived for more than 1,000 days. The histology was squamous cell carcinoma in 4 cases. According to the characteristics of pN1 involvement, all cases was involved only a single station.
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Affiliation(s)
- M Hiratsuka
- Department of Second Surgery, School of Medicine, Fukuoka University, Fukuoka, Japan
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Abstract
The mucosal immune system maintains a delicate balance between providing robust defense against infectious pathogens and, at the same time, regulating responses toward innocuous environmental and food antigens and commensal microbes. The Peyer's patch (PP) has been studied in detail as a major inductive site for mucosal immunity within the small intestine. While the mechanisms responsible for the induction of mucosal immunity versus tolerance are not yet fully understood, recent studies have highlighted mucosal dendritic cells (DCs) as regulators of the immune responses to orally administered antigens. Here we discuss recent studies that describe the role of PP DCs in immune induction and speculate on the mechanism by which the resident DCs regulate T cell and immunoglobulin A (IgA) responses in the gastrointestinal mucosa.
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Affiliation(s)
- A Sato
- Section of Immunobiology, Yale University School of Medicine, New Haven, Connecticut 06520, USA
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