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Monteagudo B, Marqués FM, Gibelin J, Orr NA, Corsi A, Kubota Y, Casal J, Gómez-Camacho J, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Rousse JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Uesaka T, Yang ZH, Yasuda J, Yoneda K, Zenihiro J. Mass, Spectroscopy, and Two-Neutron Decay of ^{16}Be. Phys Rev Lett 2024; 132:082501. [PMID: 38457706 DOI: 10.1103/physrevlett.132.082501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 12/18/2023] [Accepted: 01/29/2024] [Indexed: 03/10/2024]
Abstract
The structure and decay of the most neutron-rich beryllium isotope, ^{16}Be, has been investigated following proton knockout from a high-energy ^{17}B beam. Two relatively narrow resonances were observed for the first time, with energies of 0.84(3) and 2.15(5) MeV above the two-neutron decay threshold and widths of 0.32(8) and 0.95(15) MeV, respectively. These were assigned to be the ground (J^{π}=0^{+}) and first excited (2^{+}) state, with E_{x}=1.31(6) MeV. The mass excess of ^{16}Be was thus deduced to be 56.93(13) MeV, some 0.5 MeV more bound than the only previous measurement. Both states were observed to decay by direct two-neutron emission. Calculations incorporating the evolution of the wave function during the decay as a genuine three-body process reproduced the principal characteristics of the neutron-neutron energy spectra for both levels, indicating that the ground state exhibits a strong spatially compact dineutron component, while the 2^{+} level presents a far more diffuse neutron-neutron distribution.
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Affiliation(s)
- B Monteagudo
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
- FRIB, Michigan State University, East Lansing, Michigan 48824, USA
| | - F M Marqués
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - J Gibelin
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - N A Orr
- LPC Caen, ENSICAEN, CNRS/IN2P3, Université de Caen, Normandie Université, 14050 Caen, France
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - J Casal
- Dipartimento di Fisica e Astronomia "G. Galilei" and INFN-Sezione di Padova, Via Marzolo 8, 35131 Padova, Italy
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - J Gómez-Camacho
- Departamento de Física Atómica, Molecular y Nuclear, Facultad de Física, Universidad de Sevilla, Apartado 1065, E-41080 Sevilla, Spain
| | - G Authelet
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Delbart
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics, Peking University, Beijing 100871, China
| | - F Flavigny
- Institut de Physique Nucléaire, IN2P3-CNRS, Université Paris-Sud, Université Paris-Saclay, 91406 Orsay Cedex, France
| | - J-M Gheller
- Département des Accélérateurs, de Cryogénie et de Magnétisme, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Giganon
- Département d'électronique des Détecteurs et d'Informatique pour la Physique, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Department of Physics, Ewha Womans University, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Koyama
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - S Reichert
- Department of Physics, Technische Universität Munchen, 85748 Garching bei München, Germany
| | - J-Y Rousse
- Département d'Ingénierie des Systèmes, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Sumikama
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, 91191 Gif-sur-Yvette, France
- Department of Physics, Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Z H Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0367, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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Egawa-Takata T, Ueda Y, Ito K, Hori K, Shoji T, Nagasawa T, Nishio S, Ushijima K, Nishino K, Enomoto T, Kikuchi A, Honma S, Oishi T, Shimada M, Takei Y, Fujiwara H, Tanabe H, Okamoto A, Nishio Y, Yamada T, Kimura T. The ACE trial: A randomized phase II study for advanced endometrial carcinoma. Cancer Sci 2022; 113:1693-1701. [PMID: 35218673 PMCID: PMC9128191 DOI: 10.1111/cas.15310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 02/09/2022] [Accepted: 02/13/2022] [Indexed: 11/26/2022] Open
Abstract
This study evaluated the feasibility and efficacy of three postoperative adjuvant chemotherapy regimens for endometrial cancer. Endometrioid cancer patients with intermediate-risk stage I and II or high-risk stage III and IV disease were randomly assigned to receive six cycles of either Paclitaxel-Epirubicin-Carboplatin (TEC), Paclitaxel-Anthracycline (Doxorubicin)-Carboplatin (TAC), or dose-dense paclitaxel-carboplatin (ddTC). The primary endpoint was the completion rate (CRate) of six cycles of treatment. The secondary endpoints were progression-free survival (PFS) and overall survival (OS). One hundred and one patients were treated as follows: 33 received TEC, 33 TAC, and 35 ddTC. The CRates for TEC, TAC and ddTC were 94%, 64% and 69%, respectively (p=0.005). The TEC CRate was significantly higher than for the other two groups. However, the PFS and OS outcomes were not statistically different between the three groups. The two-year survival rates were 94%, 97%, and 97% for TEC, TAC, and ddTC, respectively. When compared to the current standard treatments for endometrial cancer, TEC is a promising candidate for a phase III trial based on its significantly superior CRate and equivalent PFS and OS. This study is registered with UMIN Clinical Trials Registry (UMIN000008911).
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Affiliation(s)
- Tomomi Egawa-Takata
- Dept. Obstetrics and Gynecology, Kansai Rosai Hospital, 3-1-69 Inabasou, Amagasaki, Hyogo, 660-8511, Japan.,Dept. Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka, 543-0035, Japan
| | - Yutaka Ueda
- Dept. Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
| | - Kimihiko Ito
- Dept. Obstetrics and Gynecology, Kansai Rosai Hospital, 3-1-69 Inabasou, Amagasaki, Hyogo, 660-8511, Japan
| | - Kensuke Hori
- Dept. Obstetrics and Gynecology, Kansai Rosai Hospital, 3-1-69 Inabasou, Amagasaki, Hyogo, 660-8511, Japan
| | - Tadahiro Shoji
- Dept. Obstetrics and Gynecology, Iwate Medical University, 2-1-1 Nishitokuta, Yanaba-cho, Shiwa, Iwate, 028-3694, Japan
| | - Takayuki Nagasawa
- Dept. Obstetrics and Gynecology, Iwate Medical University, 2-1-1 Nishitokuta, Yanaba-cho, Shiwa, Iwate, 028-3694, Japan
| | - Shin Nishio
- Dept. Obstetrics and Gynecology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Kimio Ushijima
- Dept. Obstetrics and Gynecology, Kurume University School of Medicine, 67 Asahi-machi, Kurume, Fukuoka, 830-0011, Japan
| | - Koji Nishino
- Dept. Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Takayuki Enomoto
- Dept. Obstetrics and Gynecology, Niigata University Graduate School of Medical and Dental Sciences, 1-757 Asahimachi-dori, Chuo-ku, Niigata, 951-8510, Japan
| | - Akira Kikuchi
- Dept. Obstetrics and Gynecology, Niigata Cancer Center 2-15-3 Kawagishi-chou, Chuou-ku, Niigata, 951-8566, Japan
| | - Shigeru Honma
- Dept. Obstetrics and Gynecology, Niigata Cancer Center 2-15-3 Kawagishi-chou, Chuou-ku, Niigata, 951-8566, Japan.,Niigata Association of Occupational Health, Nishi-ku, Japan
| | - Tetsuro Oishi
- Dept. Obstetrics and Gynecology, Tottori University School of Medicine, 36-1 Nishicho, Yonago, Tottori, 683-8504, Japan
| | - Muneaki Shimada
- Dept. Obstetrics and Gynecology, Tottori University School of Medicine, 36-1 Nishicho, Yonago, Tottori, 683-8504, Japan.,Dept. Obstetrics and Gynecology, Tohoku University Graduate School of Medicine, 2-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8575, Japan
| | - Yuji Takei
- Dept. Obstetrics and Gynecology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Hiroyuki Fujiwara
- Dept. Obstetrics and Gynecology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Hiroshi Tanabe
- Dept. Obstetrics and Gynecology, The Jikei University School of Medicine, 3-19-18 Nishishinbashi, Minato-ku, Tokyo, Japan.,Dept. Obstetrics and Gynecology, The Jikei University Kashiwa Hospital, 163-1, Kashiwashita, Kashiwa, Chiba, Japan.,Dept. Gynecology, National Cancer Center Hospital East, 6-5-1 Kashiwanoha, Kashiwa, Chiba, Japan
| | - Aikou Okamoto
- Dept. Obstetrics and Gynecology, The Jikei University School of Medicine, 3-19-18 Nishishinbashi, Minato-ku, Tokyo, Japan
| | - Yukihiro Nishio
- Dept. Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka, 543-0035, Japan
| | - Tomomi Yamada
- Dept. Medical Innovation Data Coordinating Center, Osaka University Hospital, Yamadaoka, Suita, Osaka, 543-0035, Japan
| | - Tadashi Kimura
- Dept. Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2, Yamadaoka, Suita, Osaka, 565-0871, Japan
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Komura N, Mabuchi S, Sawada K, Nishio Y, Kimura T, Komura H. Subsequent menstrual disorder after spontaneous menarche in Turner syndrome. Clin Endocrinol (Oxf) 2021; 95:163-168. [PMID: 33617655 DOI: 10.1111/cen.14449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 01/15/2023]
Abstract
OBJECTIVE Turner syndrome (TS) is a congenital disease characterized by delayed puberty, ovarian dysgenesis and short stature. Although most patients are diagnosed with primary amenorrhea, approximately 15-20% of patients with TS are reported to have spontaneous menarche. However, little is known about their menstruation status after spontaneous menarche. In the current study, we investigated the menstrual abnormalities after spontaneous menarche in TS patients. DESIGN Retrospective study. PATIENTS This study included TS patients with spontaneous menarche at Osaka Police Hospital or Komura Women's Clinic between April 2015 and December 2019. MEASUREMENTS Data regarding the age of menarche, menstruation status and chromosomal karyotype were collected and retrospectively analyzed. RESULTS Of 172 TS patients, 32 with spontaneous menarche were identified. The median age of menarche was 12 years old. Premature ovarian insufficiency (POI) after menarche was observed in 12 patients (37.5%) and the median age at menopause was 20 years old. The average period from spontaneous menarche to menopause in these patients was 5.1 years. Five patients (15.6%) had irregular menstruation and 15 (46.9%) had regular menstruation. When examined according to the structural abnormality of the X chromosome, all patients with structural abnormality of the X chromosome were diagnosed with POI after spontaneous menarche, and none with mosaic without structural abnormality were diagnosed with POI. CONCLUSION Approximately one-third of TS patients with spontaneous menarche were diagnosed with POI after menarche for an average of 5.1 years. Counseling is required for TS patients and their parents, including information about menstrual abnormalities or fertility preservation.
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Affiliation(s)
- Naoko Komura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
- Komura Women's Clinic, Osaka, Japan
| | - Seiji Mabuchi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
- Department of Obstetrics and Gynecology, Nara Medical University, Kashihara, Japan
| | - Kenjiro Sawada
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Yukihiro Nishio
- Department of Obstetrics and Gynecology, Osaka Police Hospital, Osaka, Japan
| | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Osaka, Japan
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Yang ZH, Kubota Y, Corsi A, Yoshida K, Sun XX, Li JG, Kimura M, Michel N, Ogata K, Yuan CX, Yuan Q, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Gibelin J, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Marqués FM, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ohkura A, Orr NA, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Roussé JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Xu FR, Yasuda J, Yoneda K, Zenihiro J, Zhou SG, Zuo W, Uesaka T. Quasifree Neutron Knockout Reaction Reveals a Small s-Orbital Component in the Borromean Nucleus ^{17}B. Phys Rev Lett 2021; 126:082501. [PMID: 33709737 DOI: 10.1103/physrevlett.126.082501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 12/07/2020] [Accepted: 01/27/2021] [Indexed: 06/12/2023]
Abstract
A kinematically complete quasifree (p,pn) experiment in inverse kinematics was performed to study the structure of the Borromean nucleus ^{17}B, which had long been considered to have a neutron halo. By analyzing the momentum distributions and exclusive cross sections, we obtained the spectroscopic factors for 1s_{1/2} and 0d_{5/2} orbitals, and a surprisingly small percentage of 9(2)% was determined for 1s_{1/2}. Our finding of such a small 1s_{1/2} component and the halo features reported in prior experiments can be explained by the deformed relativistic Hartree-Bogoliubov theory in continuum, revealing a definite but not dominant neutron halo in ^{17}B. The present work gives the smallest s- or p-orbital component among known nuclei exhibiting halo features and implies that the dominant occupation of s or p orbitals is not a prerequisite for the occurrence of a neutron halo.
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Affiliation(s)
- Z H Yang
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Yoshida
- Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
| | - X-X Sun
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J G Li
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - M Kimura
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Hokkaido University, Sapporo 060-0810, Japan
- Nuclear Reaction Data Centre, Hokkaido University, Sapporo 060-0810, Japan
| | - N Michel
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - K Ogata
- Research Center for Nuclear Physics (RCNP), Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - C X Yuan
- Sino-French Institute of Nuclear Engineering and Technology, Sun Yat-Sen University, Zhuhai, 519082, Guangdong, China
| | - Q Yuan
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - G Authelet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - F Flavigny
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - J-M Gheller
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - A Giganon
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - Y Kiyokawa
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
- Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), P.O. Box 51, H-4001 Debrecen, Hungary
| | - S Koyama
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - S Ota
- Center for Nuclear Study, The University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Reichert
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - J-Y Roussé
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science, Daejeon 34126, Republic of Korea
| | - T Sumikama
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
- Department of Physics, Rikkyo University, 3-34-1, Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - F R Xu
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S-G Zhou
- CAS Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - W Zuo
- Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- School of Nuclear Science and Technology, University of Chinese Academy of Sciences, Beijing 100049, China
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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5
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Kubota Y, Corsi A, Authelet G, Baba H, Caesar C, Calvet D, Delbart A, Dozono M, Feng J, Flavigny F, Gheller JM, Gibelin J, Giganon A, Gillibert A, Hasegawa K, Isobe T, Kanaya Y, Kawakami S, Kim D, Kikuchi Y, Kiyokawa Y, Kobayashi M, Kobayashi N, Kobayashi T, Kondo Y, Korkulu Z, Koyama S, Lapoux V, Maeda Y, Marqués FM, Motobayashi T, Miyazaki T, Nakamura T, Nakatsuka N, Nishio Y, Obertelli A, Ogata K, Ohkura A, Orr NA, Ota S, Otsu H, Ozaki T, Panin V, Paschalis S, Pollacco EC, Reichert S, Roussé JY, Saito AT, Sakaguchi S, Sako M, Santamaria C, Sasano M, Sato H, Shikata M, Shimizu Y, Shindo Y, Stuhl L, Sumikama T, Sun YL, Tabata M, Togano Y, Tsubota J, Yang ZH, Yasuda J, Yoneda K, Zenihiro J, Uesaka T. Surface Localization of the Dineutron in ^{11}Li. Phys Rev Lett 2020; 125:252501. [PMID: 33416401 DOI: 10.1103/physrevlett.125.252501] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/28/2020] [Accepted: 10/08/2020] [Indexed: 06/12/2023]
Abstract
The formation of a dineutron in the ^{11}Li nucleus is found to be localized to the surface region. The experiment measured the intrinsic momentum of the struck neutron in ^{11}Li via the (p,pn) knockout reaction at 246 MeV/nucleon. The correlation angle between the two neutrons is, for the first time, measured as a function of the intrinsic neutron momentum. A comparison with reaction calculations reveals the localization of the dineutron at r∼3.6 fm. The results also support the density dependence of dineutron formation as deduced from Hartree-Fock-Bogoliubov calculations for nuclear matter.
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Affiliation(s)
- Y Kubota
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - A Corsi
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - G Authelet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - H Baba
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Caesar
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - D Calvet
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Delbart
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Dozono
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - J Feng
- School of Physics and State Key Laboratory of Nuclear Physics and Technology, Peking University, Beijing 100871, China
| | - F Flavigny
- IPN Orsay, Université Paris Sud, IN2P3-CNRS, F-91406 Orsay Cedex, France
| | - J-M Gheller
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - J Gibelin
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - A Giganon
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A Gillibert
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Hasegawa
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - T Isobe
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Kanaya
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - S Kawakami
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - D Kim
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - Y Kikuchi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Tokuyama College, National Institute of Technology, Yamaguchi 745-8585, Japan
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
| | - Y Kiyokawa
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - M Kobayashi
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - N Kobayashi
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Kobayashi
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y Kondo
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z Korkulu
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
- Institute for Nuclear Research, Hungarian Academy of Sciences (MTA Atomki), P.O. Box 51, H-4001 Debrecen, Hungary
| | - S Koyama
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - V Lapoux
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - Y Maeda
- Department of Applied Physics, University of Miyazaki, Gakuen-Kibanadai-Nishi 1-1, Miyazaki 889-2192, Japan
| | - F M Marqués
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - T Motobayashi
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Miyazaki
- Department of Physics, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - N Nakatsuka
- Department of Physics, Kyoto University, Kitashirakawa, Sakyo, Kyoto 606-8502, Japan
| | - Y Nishio
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - A Obertelli
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - K Ogata
- Department of Physics, Osaka City University, Osaka 558-8585, Japan
- Research Center for Nuclear Physics, Osaka University, 10-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan
| | - A Ohkura
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - N A Orr
- LPC Caen, ENSICAEN, Université de Caen Normandie, CNRS/IN2P3, F-14050 Caen Cedex, France
| | - S Ota
- Center for Nuclear Study, University of Tokyo, Hongo 7-3-1, Bunkyo, Tokyo 113-0033, Japan
| | - H Otsu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Ozaki
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - V Panin
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - S Paschalis
- Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany
| | - E C Pollacco
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - S Reichert
- Physik Department, Technische Universität München, D-85748 Garching, Germany
| | - J-Y Roussé
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - A T Saito
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - S Sakaguchi
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - M Sako
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - C Santamaria
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Sasano
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - M Shikata
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Y Shimizu
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - Y Shindo
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - L Stuhl
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Center for Exotic Nuclear Studies, Institute for Basic Science (IBS), Daejeon 34126, Korea
| | - T Sumikama
- Department of Physics, Tohoku University, Aramaki Aza-Aoba 6-3, Aoba, Sendai, Miyagi 980-8578, Japan
| | - Y L Sun
- Département de Physique Nucléaire, IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France
| | - M Tabata
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - Y Togano
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - J Tsubota
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - Z H Yang
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Yasuda
- Department of Physics, Kyushu University, Nishi, Fukuoka 819-0395, Japan
| | - K Yoneda
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - J Zenihiro
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
| | - T Uesaka
- RIKEN Nishina Center, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
- Cluster for Pioneering Research, RIKEN, Hirosawa 2-1, Wako, Saitama 351-0198, Japan
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6
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Nakagawa M, Egawa-Takata T, Kamino Y, Otoshi A, Fukuda Y, Tokugawa Y, Tsukahara C, Miyatake T, Nishio Y. A case in which laparoscopic right salpingo-oophorectomy was performed in a patient with a lumboperitoneal shunt. Int J Surg Case Rep 2020; 72:156-159. [PMID: 32535532 PMCID: PMC7299902 DOI: 10.1016/j.ijscr.2020.05.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 05/22/2020] [Indexed: 11/27/2022] Open
Abstract
There are few reports about laparoscopic surgery involving patients with LP shunts. This is the first report about laparoscopic gynecological surgery with an LP shunt. In gynecological operations, the head of the shunt tube can be an obstacle. The head of the shunt tube might need to be moved for gynecological operations.
Introduction Ventriculoperitoneal (VP shunts) and lumboperitoneal shunts (LP shunts) are used to treat hydrocephalus. The effectiveness of LP shunts has recently been demonstrated. Due to population aging, the number of patients with LP shunts is expected to increase. Presentation of case A 51-year-old female, in whom an LP shunt had been inserted to treat hydrocephalus after a subarachnoid hemorrhage, underwent laparoscopic right salpingo-oophorectomy for a right endometriotic cyst. We consulted a neurosurgeon and confirmed the route of the shunt. We started a normal laparoscopic procedure. The head of the shunt tube was located in Douglas’ pouch and was an obstacle to the procedure. We moved the head of the shunt tube to the vesicouterine pouch and successfully conducted the standard operation. We report the case together with a literature review. Discussion There have been several reports about gynecological laparoscopic surgery being performed in patients with VP shunts. On the other hand, we did not find any English literature about gynecological laparoscopic surgery being conducted in patients with LP shunts during a PubMed search. Conclusion This is the first report about gynecological laparoscopic surgery being performed in a patient with an LP shunt.
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Affiliation(s)
- Mio Nakagawa
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Tomomi Egawa-Takata
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan.
| | - Yuri Kamino
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Ayuko Otoshi
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Yayoi Fukuda
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Yoshimi Tokugawa
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Chikako Tsukahara
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Takashi Miyatake
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
| | - Yukihiro Nishio
- Department of Obstetrics and Gynecology, Osaka Police Hospital, 10-31 Kitayama-cho Tennoji-ku, Osaka 543-0035, Japan
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7
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Nitta N, Tajima Y, Katashkina J, Yamamoto Y, Onuki A, Rachi H, Kazieva E, Nishio Y. Application of inorganic phosphate limitation to efficient isoprene production in
Pantoea ananatis. J Appl Microbiol 2019; 128:763-774. [DOI: 10.1111/jam.14521] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2019] [Revised: 11/08/2019] [Accepted: 11/15/2019] [Indexed: 01/11/2023]
Affiliation(s)
- N. Nitta
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - Y. Tajima
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | | | - Y. Yamamoto
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - A. Onuki
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - H. Rachi
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
| | - E. Kazieva
- Ajinomoto‐Genetika Research Institute Moscow Russia
| | - Y. Nishio
- Institute for Innovation Ajinomoto Co., Inc. Kawasaki Japan
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8
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Uwate Y, Nishio Y. Competitive networks using chaotic circuits with hierarchical structure. Chaos 2019; 29:083115. [PMID: 31472511 DOI: 10.1063/1.5093331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 07/16/2019] [Indexed: 06/10/2023]
Abstract
Coupled oscillatory systems are good models that are able to describe a variety of higher dimensional nonlinear phenomena. Coupled chaotic circuits produce many kinds of interesting synchronization phenomena. In recent years, research studies on complex networks related to the synchronization of coupled oscillators have attracted much attention. In the real world, there are a variety of different network structures. We focus on the competitive interaction network that includes conflict between two networks. Here, we propose a new paradigm for this competitive interaction network using coupled chaotic circuits.
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Affiliation(s)
- Y Uwate
- Department of Electrical and Electronics Engineering, Tokushima University, 2-1 Minami Josanjima, Tokushima 770-8506, Japan
| | - Y Nishio
- Department of Electrical and Electronics Engineering, Tokushima University, 2-1 Minami Josanjima, Tokushima 770-8506, Japan
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9
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Yokosaka S, Izawa A, Sakai C, Sakurada E, Morita Y, Nishio Y. Synthesis and evaluation of novel dolastatin 10 derivatives for versatile conjugations. Bioorg Med Chem 2018; 26:1643-1652. [PMID: 29454703 DOI: 10.1016/j.bmc.2018.02.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 02/09/2018] [Accepted: 02/10/2018] [Indexed: 11/15/2022]
Abstract
Dolastatin 10 (1) is a highly potent cytotoxic microtubule inhibitor (cytotoxicity IC50 < 5.0 nM) and several of its analogs have recently been used as payloads in antibody drug conjugates. Herein, we describe the design and synthesis of a series of novel dolastatin 10 analogs useful as payloads for conjugated drugs. We explored analogs containing functional groups at the thiazole moiety at the C-terminal of dolastatin 10. The functional groups included amines, alcohols, and thiols, which are representative structures used in known conjugated drugs. These novel analogs showed excellent potency in a tumor cell proliferation assay, and thus this series of dolastatin 10 analogs is suitable as versatile payloads in conjugated drugs. Insights into the structure-activity relationships of the analogs are also discussed.
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Affiliation(s)
- Shinya Yokosaka
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan
| | - Akiko Izawa
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan
| | - Chizuka Sakai
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan
| | - Eri Sakurada
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan
| | - Yasuhiro Morita
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan
| | - Yukihiro Nishio
- Toray Industries Inc., Pharmaceutical Research Laboratories, 6-10-1 Tebiro, Kamakura, Kanagawa 248-8555, Japan.
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10
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Itabashi R, Nishio Y, Kataoka Y, Saito T, Shigehatake Y, Fukuma K, Endo K, Yazawa Y, Mori E. Cognitive impairment in acute stroke patients with isolated infarcts in the territory of lenticulostriate arteries. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.566] [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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11
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Sasaki S, Hashimoto K, Kobayashi R, Itoh K, Iguchi S, Nishio Y, Ikemoto Y, Moriwaki T, Yoneyama N, Watanabe M, Ueda A, Mori H, Kobayashi K, Kumai R, Murakami Y, Müller J, Sasaki T. Crystallization and vitrification of electrons in a glass-forming charge liquid. Science 2017; 357:1381-1385. [PMID: 28963251 DOI: 10.1126/science.aal3120] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 08/23/2017] [Indexed: 11/03/2022]
Abstract
Charge ordering (CO) is a phenomenon in which electrons in solids crystallize into a periodic pattern of charge-rich and charge-poor sites owing to strong electron correlations. This usually results in long-range order. In geometrically frustrated systems, however, a glassy electronic state without long-range CO has been observed. We found that a charge-ordered organic material with an isosceles triangular lattice shows charge dynamics associated with crystallization and vitrification of electrons, which can be understood in the context of an energy landscape arising from the degeneracy of various CO patterns. The dynamics suggest that the same nucleation and growth processes that characterize conventional glass-forming liquids guide the crystallization of electrons. These similarities may provide insight into our understanding of the liquid-glass transition.
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Affiliation(s)
- S Sasaki
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
| | - K Hashimoto
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
| | - R Kobayashi
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
| | - K Itoh
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
| | - S Iguchi
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
| | - Y Nishio
- Department of Physics, Faculty of Science, Toho University, Funabashi, Chiba 274-8510, Japan.
| | - Y Ikemoto
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan.
| | - T Moriwaki
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan.
| | - N Yoneyama
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan
| | - M Watanabe
- Department of Physics, Faculty of Science, Toho University, Funabashi, Chiba 274-8510, Japan
| | - A Ueda
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan
| | - H Mori
- Japan Synchrotron Radiation Research Institute, SPring-8, Sayo, Hyogo 679-5198, Japan
| | - K Kobayashi
- CMRC and Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - R Kumai
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, Kohu, Yamanashi 400-8511, Japan
| | - Y Murakami
- Graduate Faculty of Interdisciplinary Research, University of Yamanashi, Kohu, Yamanashi 400-8511, Japan
| | - J Müller
- Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
| | - T Sasaki
- Institute for Materials Research, Tohoku University, Aoba-ku, Sendai 980-8577, Japan.
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12
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Narita W, Nishio Y, Baba T, Iizuka O, Ishihara T, Matsuda M, Iwasaki M, Tominaga T, Mori E. High-Convexity Tightness Predicts the Shunt Response in Idiopathic Normal Pressure Hydrocephalus. AJNR Am J Neuroradiol 2016; 37:1831-1837. [PMID: 27365329 DOI: 10.3174/ajnr.a4838] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 04/18/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although neuroimaging plays an important role in the diagnosis of idiopathic normal pressure hydrocephalus, its predictive value for response to shunt surgery has not been established. The purpose of the current study was to identify neuroimaging markers that predict the shunt response of idiopathic normal pressure hydrocephalus. MATERIALS AND METHODS Sixty patients with idiopathic normal pressure hydrocephalus underwent presurgical brain MR imaging and clinical evaluation before and 1 year after shunt surgery. The assessed MR imaging features included the Evans index, high-convexity tightness, Sylvian fissure dilation, callosal angle, focal enlargement of the cortical sulci, bumps in the lateral ventricular roof, and deep white matter and periventricular hyperintensities. The idiopathic normal pressure hydrocephalus grading scale total score was used as a primary clinical outcome measure. We used measures for individual symptoms (ie, the idiopathic normal pressure hydrocephalus grading scale subdomain scores, such as gait, cognitive, and urinary scores), the Timed Up and Go test, and the Mini-Mental State Examination as secondary clinical outcome measures. The relationships between presurgical neuroimaging features and postoperative clinical changes were investigated by using simple linear regression analysis. To identify the set of presurgical MR imaging features that best predict surgical outcomes, we performed multiple linear regression analysis by using a bidirectional stepwise method. RESULTS Simple linear regression analyses demonstrated that presurgical high-convexity tightness, callosal angle, and Sylvian fissure dilation were significantly associated with the 1-year changes in the clinical symptoms. A multiple linear regression analysis demonstrated that presurgical high-convexity tightness alone predicted the improvement of the clinical symptoms 1 year after surgery. CONCLUSIONS High-convexity tightness is a neuroimaging feature predictive of shunt response in idiopathic normal pressure hydrocephalus.
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Affiliation(s)
- W Narita
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - Y Nishio
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - T Baba
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - O Iizuka
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - T Ishihara
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - M Matsuda
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
| | - M Iwasaki
- Neurosurgery (M.I., T.T.), Tohoku University School of Medicine, Sendai, Japan
| | - T Tominaga
- Neurosurgery (M.I., T.T.), Tohoku University School of Medicine, Sendai, Japan
| | - E Mori
- From the Departments of Behavioral Neurology and Cognitive Neuroscience (W.N., Y.N., T.B., O.I., T.I., M.M., E.M.)
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13
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Endou H, Tamura K, Saka S, Nishio Y, Takemoto F, Takahashi T. Intranephron ammoniagenesis and its regulation by PGE2 in rats and mice. Contrib Nephrol 2015; 63:86-90. [PMID: 3191719 DOI: 10.1159/000415703] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- H Endou
- Department of Pharmacology, Faculty of Medicine, University of Tokyo, Japan
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14
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Koreeda Y, Obata S, Nishio Y, Miura S, Kobayashi Y, Kawamura K, Souzaki R, Ieiri S, Hashizume M, Fujie MG. Development and testing of an endoscopic pseudo-viewpoint alternating system. Int J Comput Assist Radiol Surg 2014; 10:619-28. [PMID: 24950746 PMCID: PMC4411650 DOI: 10.1007/s11548-014-1083-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Accepted: 05/27/2014] [Indexed: 11/28/2022]
Abstract
Purpose An endoscopic system is needed that presents informative images irrespective of the surgical situation and the number of degrees of freedom in endoscopic manipulation. This goal may be achieved with a virtual reality view for a region of interest from an arbitrary viewpoint. An endoscopic pseudo-viewpoint alternation system for this purpose was developed and tested. Method Surgical experts and trainees from an endoscopic surgery training course at the minimally invasive surgery training center of Kyushu University were enrolled in a trial of a virtual reality system. The initial viewpoint was positioned to approximate the horizontal view often seen in laparoscopic surgery, with \documentclass[12pt]{minimal}
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\begin{document}$$20^{\circ }$$\end{document}20∘ between the optical axis of the endoscope and the task surface. A right-to-left suturing task with right hand, based on a task from the endoscopic surgery training course, was selected for testing. We compared task outcomes with and without use of a new virtual reality-viewing system. Result There was a 0.37 mm reduction in total error (\documentclass[12pt]{minimal}
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\begin{document}$$p = 0.02$$\end{document}p=0.02) with use of the proposed system. Error reduction was composed of 0.1 mm reduction on the y-axis and 0.27 mm reduction on the x-axis. Experts benefited more than novices from use of the proposed system. Most subjects worked at a pseudo-viewpoint of around 34\documentclass[12pt]{minimal}
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\begin{document}$$^\circ $$\end{document}∘. Discussion Suturing performance improved with the new virtual reality endoscopic display system. Viewpoint alternation resulted in an overview that improved depth perception and allowed subjects to better aim the marker. This suggests the proposed method offers users better visualization and control in endoscopic surgery.
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Affiliation(s)
- Y Koreeda
- Graduate School of Science and Engineering, Waseda University, 59-309, 3-4-1, Okubo, Shinjuku Ward, Tokyo, Japan,
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15
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Nakamura K, Sawada K, Sugiyama M, Mabuchi S, Hisamatsu T, Nishio Y, Ito K, Morishige KI, Kimura T, Kamiura S. The effect of raloxifene hydrochloride for the prevention of health care problems of patients who underwent surgeries for endometrial cancer: A multicenter clinical trial. J Clin Oncol 2014. [DOI: 10.1200/jco.2014.32.15_suppl.5602] [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] [Indexed: 11/20/2022] Open
Affiliation(s)
- Koji Nakamura
- Department of Obstetrics and Gynecology, Osaka University Faculty of Medicine, Suita, Japan
| | - Kenjiro Sawada
- Department of Obstetrics and Gynecology, Osaka University Faculty of Medicine, Suita, Japan
| | - Michiyo Sugiyama
- Gifu University Graduate School of Medicine, and the Section of Gynecologic Oncology, GIfu-shi, Japan
| | - Seiji Mabuchi
- Department of Obstetrics and Gynecology, Osaka University Faculty of Medicine, Suita, Japan
| | - Takeshi Hisamatsu
- Osaka University Graduate School of Medicine, Suita-shi Osaka, Japan
| | | | | | - Ken-ichirou Morishige
- Gifu University Graduate School of Medicine, and the Section of Gynecologic Oncology, GIfu-shi, Japan
| | | | - Shoji Kamiura
- Osaka Medical Center for Cancer and Cardiovascular Diseases, Osaka, Japan
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16
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Maenaka T, Egawa-Takata T, Hisamoto K, Kunishige I, Nishio Y, Tsujimoto M. Case of uterine papillary serous carcinoma following tamoxifen treatment that could not be diagnosed during screening. J Obstet Gynaecol Res 2014; 40:1450-4. [PMID: 24606575 DOI: 10.1111/jog.12317] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 10/05/2013] [Indexed: 11/30/2022]
Abstract
This case involved a 69-year-old woman who had been taking tamoxifen for 5 years after breast cancer surgery. She was referred to our clinic for endometrial cancer screening when tamoxifen was first prescribed. Subsequently, transvaginal ultrasonography and endometrial cytology were performed every 6 months. Despite these regular examinations, stage IVb papillary serous carcinoma was detected 8 months after the end of tamoxifen administration. Total abdominal hysterectomy was performed, but only a small polyp was seen upon macroscopic examination of the uterus. However, papillary serous carcinoma was found microscopically in almost all lymphovascular spaces in the uterus from the endometrium to the serosa. On the surface of the polyp, only endometrial intraepithelial carcinoma with positive immunostaining for p53 was detected. Chemotherapy, including a platinum compound, was administrated, but unfortunately it was ineffective and the patient died of her disease 14 months after the operation.
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Affiliation(s)
- Takahide Maenaka
- Department of Obstetrics and Gynecology, Osaka Police Hospital, Osaka, Japan
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17
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Maenaka T, Iwata N, Egawa-Takata T, Fukuda Y, Tsukahara C, Kashihara H, Hisamoto K, Kunishige I, Nishio Y, Tsujimoto M. [A case of poorly differentiated adenocarcinoma of the uterine cervix treated with paclitaxel and carboplatin after positive PAX 8 immunostaining]. Gan To Kagaku Ryoho 2013; 40:1413-1417. [PMID: 24196083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
PAX 8 is a paired-box gene that plays an important role in the embryogenesis of the thyroid gland, Müllerian ducts, and renal/upper urinary tract. PAX 8 expression is observed in carcinomas from each of these sites. Accordingly, PAX 8 immunostaining has been reported to be useful for the diagnosis of these carcinomas. Here, we report a case in which PAX 8 was useful for the diagnosis of a patient with cervical adenocarcinoma and multiple metastases. A 55-year-old female patient complained of cough and genital bleeding. Examination revealed a uterine cervical mass, masses in both breasts, and enlargement of the lymph nodes and subcutaneous nodules. Histology of the uterine cervical mass biopsy revealed a poorly differentiated adenocarcinoma. Cytology of the aspiration biopsy specimens of the breast masses indicated scirrhous cancer. PAX 8 immunostaining of the uterine cervical mass and breast mass biopsies was positive. We determined that the breast masses were metastases of the cervical adenocarcinoma and decided to treat the patient with chemotherapy consisting of paclitaxel and carboplatin. A partial response was observed. A hysterectomy was performed 5 months after chemotherapy because corpus cancer was newly diagnosed. The cervical adenocarcinoma was undetectable in the surgical specimen. Fifteen months have passed since the completion of chemotherapy and the metastases has been under control.
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18
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Ueda Y, Miyatake T, Nagamatsu M, Yamasaki M, Nishio Y, Yoshino K, Fujita M, Tsutsui T, Enomoto T, Kimura T. A phase II study of combination chemotherapy using docetaxel and irinotecan for TC-refractory or TC-resistant ovarian carcinomas (GOGO-OV2 study) and for primary clear or mucinous ovarian carcinomas (GOGO-OV3 Study). Eur J Obstet Gynecol Reprod Biol 2013; 170:259-63. [DOI: 10.1016/j.ejogrb.2013.06.035] [Citation(s) in RCA: 10] [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] [Received: 09/12/2012] [Revised: 05/08/2013] [Accepted: 06/27/2013] [Indexed: 12/01/2022]
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19
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Noda-Seino H, Sawada K, Hayakawa J, Ohyagi-Hara C, Mabuchi S, Takahashi K, Nishio Y, Sakata M, Kurachi H, Kimura T. Estradiol and raloxifene induce the proliferation of osteoblasts through G-protein-coupled receptor GPR30. J Endocrinol Invest 2013; 36:21-7. [PMID: 22453024 DOI: 10.3275/8301] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Although G-protein-coupled receptor, GPR30, has been considered as a G-protein-coupled estrogen receptor, conflicting results have been reported and the function of GPR30 in bone remains unresolved. The aim of this study was to clarify the functional role of GPR30 in osteoblasts using its derived cell line. METHODS AND RESULTS Immunohistochemical study revealed that GPR30 is expressed in human osteoblasts. Human fetal osteoblast cell lines, hFOB cells, which express GPR30 but lack estrogen receptor, were used for the in vitro experiments. Estradiol or raloxifene induced the proliferation of hFOB cells, which was accompanied by the activation of mitogen-activated protein (MAP) kinase. Those proliferative effects were completely abrogated by the transfection of GPR30 small interfering RNA, while the transfection alone did not affect the cell viability. CONCLUSION GPR30 is required for the proliferation of hFOB cells induced by estradiol or raloxifene. This proliferative effect was at least partly mediated via MAP kinase activation. These findings revealed a novel function of GPR30 in osteoblasts and might lead to a better understanding of how estrogen and selective estrogen receptor modulators show their osteoprotective effects.
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MESH Headings
- Blotting, Western
- Cell Proliferation/drug effects
- Cells, Cultured
- Estradiol/pharmacology
- Estrogens/pharmacology
- Fetus/cytology
- Fetus/drug effects
- Fetus/metabolism
- Humans
- Immunoenzyme Techniques
- Mitogen-Activated Protein Kinase 1/genetics
- Mitogen-Activated Protein Kinase 1/metabolism
- Mitogen-Activated Protein Kinase 3/genetics
- Mitogen-Activated Protein Kinase 3/metabolism
- Osteoblasts/cytology
- Osteoblasts/drug effects
- Osteoblasts/metabolism
- Proto-Oncogene Proteins c-myc/genetics
- Proto-Oncogene Proteins c-myc/metabolism
- RNA, Messenger/genetics
- RNA, Small Interfering/genetics
- Raloxifene Hydrochloride/pharmacology
- Real-Time Polymerase Chain Reaction
- Receptors, Estrogen/antagonists & inhibitors
- Receptors, Estrogen/genetics
- Receptors, Estrogen/metabolism
- Receptors, G-Protein-Coupled/antagonists & inhibitors
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Reverse Transcriptase Polymerase Chain Reaction
- Selective Estrogen Receptor Modulators/pharmacology
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Affiliation(s)
- H Noda-Seino
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, Suita, Osaka, Japan
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20
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Kanno S, Saito M, Hayashi A, Uchiyama M, Hiraoka K, Nishio Y, Hisanaga K, Mori E. Counting-backward test for executive function in idiopathic normal pressure hydrocephalus. Acta Neurol Scand 2012; 126:279-86. [PMID: 22288385 DOI: 10.1111/j.1600-0404.2012.01644.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2012] [Indexed: 11/29/2022]
Abstract
OBJECTIVES The aim of this study was to develop and validate a bedside test for executive function in patients with idiopathic normal pressure hydrocephalus (INPH). MATERIALS AND METHODS Twenty consecutive patients with INPH and 20 patients with Alzheimer's disease (AD) were enrolled in this study. We developed the counting-backward test for evaluating executive function in patients with INPH. Two indices that are considered to be reflective of the attention deficits and response suppression underlying executive dysfunction in INPH were calculated: the first-error score and the reverse-effect index. Performance on both the counting-backward test and standard neuropsychological tests for executive function was assessed in INPH and AD patients. RESULTS The first-error score, reverse-effect index and the scores from the standard neuropsychological tests for executive function were significantly lower for individuals in the INPH group than in the AD group. The two indices for the counting-backward test in the INPH group were strongly correlated with the total scores for Frontal Assessment Battery and Phonemic Verbal Fluency. The first-error score was also significantly correlated with the error rate of the Stroop colour-word test and the score of the go/no-go test. In addition, we found that the first-error score highly distinguished patients with INPH from those with AD using these tests. CONCLUSION The counting-backward test is useful for evaluating executive dysfunction in INPH and for differentiating between INPH and AD patients. In particular, the first-error score may reflect deficits in the response suppression related to executive dysfunction in INPH.
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Affiliation(s)
- S. Kanno
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - M. Saito
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - A. Hayashi
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - M. Uchiyama
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - K. Hiraoka
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - Y. Nishio
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
| | - K. Hisanaga
- Department of Neurology; Miyagi National Hospital; Watari; Miyagi; Japan
| | - E. Mori
- Department of Behavioural Neurology and Cognitive Neuroscience; Tohoku University Graduate School of Medicine; Sendai; Japan
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Abstract
Patients with Turner syndrome (TS) almost develop osteoporosis, resulting from chromosomal deficiency and estrogen deficiency by gonadal dysgenesis. The aim of this study was to assess bone mineral density (BMD) during continuous estrogen therapy in young TS patients by measuring lumbar spine BMD of 67 TS patients using dual-energy X-ray absorptiometry. Twenty-seven patients who were treated with adult-doses of estrogen prior to the first evaluation, exhibited a significantly higher initial BMD than 30 patients treated with low-dose estrogen therapy and 10 patients without estrogen therapy (0.808 g/cm², 0.714 g/cm², and 0.664 g/cm², respectively). During continuous adult-dose estrogen therapy, BMD significantly increased in each group (maximum BMD during the study, 0.842 g/cm², 0.790 g/cm², and 0.724 g/cm², respectively). Initial and maximum BMD showed significant negative correlation with the age at which adult-dose estrogen therapy was initiated (r = -0.57 and -0.45, respectively). Among the patients not treated with adult-dose estrogen therapy prior to the first evaluation, the annual increase in the rate and amount of BMD was significantly higher when adult-dose estrogen therapy was initiated before age 18 (rate, 4.4 % before age 18 vs. 3.1 % after age 18; amount, 0.03 g/cm² before age 18 vs. 0.02 g/cm² after age 18). In summary, estrogen therapy increased BMD in young TS patients and might be more effective if initiated by age 18.
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Affiliation(s)
- Michiko Kodama
- Department of Obstetrics and Gynecology, Nissay Hospital, Osaka, Japan.
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22
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Nishio Y, Kimura H, Sawada N, Sugaru E, Horiguchi M, Ono M, Furuta Y, Sakai M, Masui Y, Otani M, Hashizuka T, Honda Y, Deguchi J, Nakagawa T, Nakahira H. 2-({6-[(3R)-3-amino-3-methylpiperidine-1-yl]-1,3-dimethyl-2,4-dioxo-1,2,3,4-tetrahydro-5H-pyrrolo[3,2-d]pyrimidine-5-yl}methyl)-4-fluorobenzonitrile (DSR-12727): A potent, orally active dipeptidyl peptidase IV inhibitor without mechanism-based inactivation of CYP3A. Bioorg Med Chem 2011; 19:5490-9. [DOI: 10.1016/j.bmc.2011.07.042] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2011] [Revised: 07/22/2011] [Accepted: 07/22/2011] [Indexed: 02/04/2023]
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Nishio Y, Uchiyama K, Kito M, Nakahira H. Convenient synthesis of 4-tert-butyl 2-ethyl 3-amino-1-benzyl-5-dialkylamino-1H-pyrrole-2,4-dicarboxylate derivatives. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.02.071] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [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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25
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Nishio Y, Kimura H, Tosaki S, Sugaru E, Sakai M, Horiguchi M, Masui Y, Ono M, Nakagawa T, Nakahira H. Discovery of new chemotype dipeptidyl peptidase IV inhibitors having (R)-3-amino-3-methyl piperidine as a pharmacophore. Bioorg Med Chem Lett 2010; 20:7246-9. [DOI: 10.1016/j.bmcl.2010.10.101] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 10/01/2010] [Accepted: 10/20/2010] [Indexed: 01/31/2023]
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26
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Inoue Y, Saito T, Ogawa K, Nishio Y, Kosugi S, Suzuki Y, Shibuya Y, Kato M, Takahashi M, Miura I. Pharmacokinetics of cyclosporine A at a high-peak concentration of twice-daily infusion and oral administration in allogeneic haematopoietic stem cell transplantation. J Clin Pharm Ther 2010; 36:518-24. [DOI: 10.1111/j.1365-2710.2010.01199.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [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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Mabuchi S, Kawase C, Altomare DA, Morishige K, Hayashi M, Sawada K, Ito K, Terai Y, Nishio Y, Klein-Szanto AJ, Burger RA, Ohmichi M, Testa JR, Kimura T. Vascular endothelial growth factor is a promising therapeutic target for the treatment of clear cell carcinoma of the ovary. Mol Cancer Ther 2010; 9:2411-22. [PMID: 20663925 DOI: 10.1158/1535-7163.mct-10-0169] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
This study examines the role of vascular endothelial growth factor (VEGF) as a therapeutic target in clear cell carcinoma (CCC) of the ovary, which has been regarded as a chemoresistant histologic subtype. Immunohistochemical analysis using tissue microarrays of 98 primary ovarian cancers revealed that VEGF was strongly expressed both in early-stage and advanced-stage CCC of the ovary. In early-stage CCCs, patients who had tumors with high levels of VEGF had significantly shorter survival than those with low levels of VEGF. In vitro experiments revealed that VEGF expression was significantly higher in cisplatin-refractory human CCC cells (RMG1-CR and KOC7C-CR), compared with the respective parental cells (RMG1 and KOC7C) in the presence of cisplatin. In vivo treatment with bevacizumab markedly inhibited the growth of both parental CCC cell-derived (RMG1 and KOC7C) and cisplatin-refractory CCC cell-derived (RMG1-CR and KOC7C-CR) tumors as a result of inhibition of tumor angiogenesis. The results of the current study indicate that VEGF is frequently expressed and can be a promising therapeutic target in the management of CCC. Bevacizumab may be efficacious not only as a first-line treatment but also as a second-line treatment of recurrent disease in patients previously treated with cisplatin.
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Affiliation(s)
- Seiji Mabuchi
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan.
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Nishio Y, Hirayama K, Takeda A, Hosokai Y, Ishioka T, Suzuki K, Itoyama Y, Takahashi S, Mori E. Corticolimbic gray matter loss in Parkinson’s disease without dementia. Eur J Neurol 2010; 17:1090-7. [DOI: 10.1111/j.1468-1331.2010.02980.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [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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Ugi S, Shi K, Nishio Y, Shimizu S, Guo B, Sekine O, Ikeda K, Egawa K, Yoshizaki T, Nagai Y, Koya D, Takada T, Torii R, Kimura H, Kashiwagi A, Maegawa H. Membrane Localization of Protein-Tyrosine Phosphatase 1B is Essential for its Activation of Sterol Regulatory Element-Binding Protein-1 Gene Expression and Consequent Hypertriglyceridaemia. J Biochem 2009; 146:541-7. [DOI: 10.1093/jb/mvp104] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Muraji M, Mabuchi S, Hisamoto K, Muranishi M, Kanagawa T, Nishio Y, Kimura T. Cesarean scar pregnancies successfully treated with methotrexate. Acta Obstet Gynecol Scand 2009; 88:720-3. [DOI: 10.1080/00016340902883141] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Sawada K, Morishige KI, Nishio Y, Hayakawa J, Mabuchi S, Isobe A, Ogata S, Sakata M, Ohmichi M, Kimura T. Peripheral quantitative computed tomography is useful to monitor response to alendronate therapy in postmenopausal women. J Bone Miner Metab 2009; 27:175-81. [PMID: 19152069 DOI: 10.1007/s00774-008-0025-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2007] [Accepted: 06/05/2008] [Indexed: 10/21/2022]
Abstract
A forearm fracture (Colles' fracture) is often the first sign of osteoporosis and may suggest underlying skeletal fragility. Therefore, establishment of a more accurate and reliable method for the measurement of bone mineral density (BMD) at the distal radius would be beneficial for patients who suffer from osteoporosis. The objective of this study was to evaluate the usefulness of peripheral quantitative computed tomography (pQCT) to monitor the response to alendronate therapy at the distal radius in early postmenopausal Japanese women. Thirty-two early postmenopausal women who were diagnosed with osteoporosis or osteopenia were randomized to either alendronate or control treatment. We analyzed the BMD of the distal radius by pQCT, lumbar spine by dual-energy X-ray absorptiometry (DXA) and the biochemical markers of bone turnover (deoxypyridinoline) at baseline, 3, 6 and 12 months. The control group showed a significant decrease from baseline in the trabecular BMD of the radius at 12 months (3.5 +/- 3.7%; p < 0.01), whereas the alendronate group showed a significant increase (4.3 +/- 8.1%). The changes in the trabecular BMD of the radius between the alendronate and control groups were statistically different at 6 and 12 months (p < 0.01). However, in the total BMD at the diaphysis of the radius, no significant differences were seen in the changes in bone densities between the alendronate and control groups after 1 year of treatment. pQCT detected significant differences in BMD of the radius in early postmenopausal women after 1 year of treatment with alendronate. Collectively, our preliminary clinical trial showed that pQCT might be useful to monitor response to alendronate therapy, especially at the radius, and it might explain why alendronate prevents Colles' fracture.
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Affiliation(s)
- Kenjiro Sawada
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Akira S, Isshiki H, Nakajima T, Kinoshita S, Nishio Y, Natsuka S, Kishimoto T. Regulation of expression of the interleukin 6 gene: structure and function of the transcription factor NF-IL6. Ciba Found Symp 2007; 167:47-62; discussion 62-7. [PMID: 1385054 DOI: 10.1002/9780470514269.ch4] [Citation(s) in RCA: 18] [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] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The interleukin 6 (IL-6) promoter is rapidly and transiently activated by other cytokines, including IL-1 and tumour necrosis factor (TNF), as well as by phorbol esters and cyclic AMP agonists. Studies using promoter mutants suggested that an IL-1-responsive element mapped within the -180 to -123 region of the IL-6 promoter. A nuclear factor (NF-IL6) that recognized a unique sequence containing an inverted repeat, ACATTGCACAATCT, was identified within the region. Direct cloning of the human NF-IL6 revealed its similarity to C/EBP, a liver- and adipose tissue-specific transcription factor. C/EBP and NF-IL6 recognize the same nucleotide sequence, but exhibit distinct patterns of expression. NF-IL6 is expressed at a low level in normal tissues, but is rapidly and drastically induced by bacterial lipopolysaccharide (LPS) or inflammatory cytokines such as IL-1, TNF and IL-6. Recently, NF-IL6 has been shown to be identical to IL-6DBP, the DNA-binding protein which is responsible for IL-6-mediated induction of several acute-phase proteins. Evidence that NF-IL6 DNA-binding activity is increased after IL-6 stimulation without increased NF-IL6 protein synthesis demonstrates the importance of post-translational modification. There are some results indicating that phosphorylation is involved in transcriptional and binding activities of NF-IL6. Taken together, these findings indicate that NF-IL6 may be an important transcription factor on the signal transduction pathways of IL-1 and IL-6.
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Affiliation(s)
- S Akira
- Institute for Molecular and Cellular Biology, Osaka University, Japan
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Shi K, Ugi S, Shimizu S, Sekine O, Ikeda K, Egawa K, Yoshizaki T, Nagai Y, Nishio Y, Takada T, Torii R, Kimura H, Kashiwagi A, Maegawa H. Membrane localization of protein-tyrosine phosphatase 1B is essential for its activation of sterol regulatory element-binding protein-1 gene expression. Biochem Biophys Res Commun 2007; 363:626-32. [PMID: 17897622 DOI: 10.1016/j.bbrc.2007.09.015] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2007] [Accepted: 09/10/2007] [Indexed: 01/23/2023]
Abstract
Sterol regulatory element-binding protein-1 (SREBP-1) is a key transcription factor in stimulating lipogenesis in the liver. Protein-tyrosine phosphatase 1B (PTP1B) induces SREBP-1 gene expression via protein phosphatase 2A (PP2A) activation. PTP1B is reported to be anchored on the endoplasmic reticulum (ER) via its C-terminal tail, and change in intracellular localization of PTP1B by C-terminal-truncation did not alter its inhibitory effects on insulin signaling. In this study, we investigated whether the change in intracellular localization of PTP1B could influence SREBP-1 gene expression. Overexpression of C-terminal truncated PTP1B (PTP1BdeltaCT) in rat Fao cells did not induce SREBP-1 gene expression. Furthermore, PTP1BdeltaCT failed to bind PP2A, resulting in impaired PP2A activation, whereas overexpression of wild-type PTP1B (PTP1BWT) associated with PP2A. Moreover, a membrane-targeted PTP1BDeltaCT activated PP2A with restored PP2A binding, despite the absence of its C-terminal region. Finally, overexpression of PTP1BdeltaCT into mouse primary cultured hepatocytes failed to enhance SREBP-1c mRNA, whereas membrane-targeted PTP1BdeltaCT led to enhanced SREBP-1c mRNA in hepatocytes as well as PTP1BWT. In conclusion, membrane localization of PTP1B is essential for PP2A activation, which is crucial for its enhancement of SREBP-1 gene expression.
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Affiliation(s)
- K Shi
- Department of Medicine, Shiga University of Medical Science, Otsu, Shiga 520-2192, Japan
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Iwai S, Yamamoto K, Kashiwazaki A, Hiramatsu F, Nakaya H, Kawakami Y, Yakushi K, Okamoto H, Mori H, Nishio Y. Photoinduced melting of a stripe-type charge-order and metallic domain formation in a layered BEDT-TTF-based organic salt. Phys Rev Lett 2007; 98:097402. [PMID: 17359195 DOI: 10.1103/physrevlett.98.097402] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2006] [Indexed: 05/14/2023]
Abstract
Photoinduced melting of charge-order (CO) in [bis(ethylenedithiolo)]-tetrathiafulvalene (BEDT-TTF) salts was investigated by femotosecond spectroscopy. Comparative studies on two polytypes exhibiting large [theta-(BEDT-TTF)2RbZn(SCN)_{4}] and small [alpha-(BEDT-TTF)2I3] molecular rearrangements through the CO transition were performed. Ultrafast melting of CO for both compounds demonstrates the major contribution of the electronic instability which is due to Coulomb interaction. The roles of the molecular rearrangements on the formation of the CO and the metallic domain are discussed on the basis of low-frequency lattice dynamics.
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Affiliation(s)
- S Iwai
- Department of Physics, Tohoku University, Sendai 980-8578, Japan.
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Yada-Hashimoto N, Nishio Y, Ohmichi M, Hayakawa J, Mabuchi S, Hisamoto K, Nakatsuji Y, Sasaki H, Seino-Noda H, Sakata M, Tasaka K, Murata Y. Estrogen and raloxifene inhibit the monocytic chemoattractant protein-1-induced migration of human monocytic cells via nongenomic estrogen receptor alpha. Menopause 2007; 13:935-41. [PMID: 17006379 DOI: 10.1097/01.gme.0000248732.78698.a7] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
OBJECTIVE To investigate the effects of estradiol (E2) and raloxifene on the migration of human monocytic THP-1 cells to endothelium. DESIGN A prospective comparative study. THP-1 cells, a human acute monocytic leukemia cell line, were used for the study. Migration assays were performed using transwell inserts. THP-1 cells were exposed to E2 or raloxifene in the presence of monocytic chemoattractant protein-1 (MCP-1), a major chemoattractant for monocytes. The cells were transfected with small interfering RNA (siRNA) against estrogen receptor (ER) alpha and ERbeta for gene silencing. ER expression was evaluated by Western blot analysis. RESULTS MCP-1 induced the migration of the cells for 90 minutes. The addition of E2 or raloxifene significantly inhibited the MCP-1-induced migration for 90 minutes. Preincubation of THP-1 cells with an ER antagonist, ICI 182780, significantly attenuated the inhibitory effects of E2 and raloxifene. Whereas transfection with siRNA of ERalpha significantly attenuated the inhibition by E2 of MCP-1-induced monocyte migration, transfection with control siRNA or siRNA of ERbeta had no effect on the rapid inhibitory action of E2. Moreover, preincubation of THP-1 cells with a transcriptional inhibitor, actinomycin D, had no effect on the rapid inhibitory action of E2. CONCLUSIONS Our findings suggest that both E2 and raloxifene inhibited the MCP-1-induced monocyte migration through nongenomic ERalpha. This result may explain one of the antiatherosclerotic effects of E2 and raloxifene on vasculature.
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Affiliation(s)
- Namiko Yada-Hashimoto
- Department of Obstetrics and Gynecology, School of Medicine, Osaka University, Osaka, Japan
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Sato Y, Nishio Y, Sekine O, Kodama K, Nagai Y, Nakamura T, Maegawa H, Kashiwagi A. Increased expression of CCAAT/enhancer binding protein-beta and -delta and monocyte chemoattractant protein-1 genes in aortas from hyperinsulinaemic rats. Diabetologia 2007; 50:481-9. [PMID: 17180354 DOI: 10.1007/s00125-006-0480-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2006] [Accepted: 08/08/2006] [Indexed: 11/29/2022]
Abstract
AIMS/HYPOTHESIS We evaluated whether hyperinsulinaemia stimulates the expression of transcription factor CCAAT/enhancer binding protein (C/EBP)-beta and C/EBP-delta and leads to the induction of the chemokine (C-C motif) ligand 2 gene (Ccl2, also known as MCP-1) expression in aortas. METHODS Hyperinsulinaemia was induced by feeding rats a high-fructose diet. CCL2 production was analysed by ELISA. The expression of Ccl2, Cebpb and Cebpd mRNAs was investigated by quantitative RT-PCR. The binding of C/EBP-beta to Ccl2 was assessed by chromatin immunoprecipitation (ChIP) assay. RESULTS Insulin at a concentration of 10 nmol/l significantly stimulated the expression of Cebpb, Cebpd and Ccl2 mRNAs, depending on activation of phosphatidylinositol 3-kinase (PI3K) in cultured vascular smooth muscle cells. The knock-down of C/EBP-beta with siRNA abolished the insulin-induced Ccl2 mRNA expression. In the aortas from fructose-fed rats, the levels of phosphorylation of Akt/protein kinase B, a downstream effector of PI3K, were also increased. The expression of Cebpb, Cebpd and Ccl2 mRNAs in the aortas from fructose-fed rats were significantly elevated, by 330, 300 and 300%, respectively, compared with those of control-fed rats. The induction Ccl2 mRNA expression in the aortas was significantly correlated with the expression of Cebpb and Cebpd mRNAs in the aortas. Furthermore, the ChIP assay showed elevated binding of C/EBP-beta to the 5' upstream region of Ccl2 in the aortas from fructose-fed rats. CONCLUSIONS/INTERPRETATION These findings clearly indicate the role of C/EBPs in the mechanism of upregulation of CCL2, an inflammation-related protein, observed in the hyperinsulinaemic state, which may initiate the process of atherosclerosis.
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Affiliation(s)
- Y Sato
- Division of Endocrinology and Metabolism, Department of Medicine, Shiga University of Medical Science, Seta-Tsukinowa-Cho, Otsu, Shiga, 520-2192, Japan
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Saiki T, Nishio Y, Ishiyama T, Miyaura N. Improvements of Efficiency and Regioselectivity in the Iridium(I)-Catalyzed Aromatic CH Silylation of Arenes with Fluorodisilanes. Organometallics 2006. [DOI: 10.1021/om050968+] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Nishio Y, Kazui H, Hashimoto M, Shimizu K, Onouchi K, Mochio S, Suzuki K, Mori E. Actions anchored by concepts: defective action comprehension in semantic dementia. J Neurol Neurosurg Psychiatry 2006; 77:1313-7. [PMID: 16891383 PMCID: PMC2077425 DOI: 10.1136/jnnp.2006.096297] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
OBJECTIVE To study the ability of patients with semantic dementia to understand actions, in order to examine the contribution of semantic memory to action comprehension. METHODS The ability to comprehend symbolic and instrumental actions was assessed in 6 patients with semantic dementia and 10 healthy controls. The patients were also given the imitation test of meaningful and meaningless actions. RESULTS In all patients with semantic dementia, comprehension of both symbolic and instrumental actions was defective. The comprehension of symbolic actions was more impaired than that of instrumental actions. Their ability to imitate other's actions was well preserved. CONCLUSION This study showed that comprehension of action was impaired in semantic dementia, suggesting that semantic memory has an important role in comprehension of human action.
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Affiliation(s)
- Y Nishio
- Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, 2-1, Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
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Nishio Y, Ando T, Maeda O, Ishiguro K, Watanabe O, Ohmiya N, Niwa Y, Kusugami K, Goto H. Pit patterns in rectal mucosa assessed by magnifying colonoscope are predictive of relapse in patients with quiescent ulcerative colitis. Gut 2006; 55:1768-73. [PMID: 16682428 PMCID: PMC1856459 DOI: 10.1136/gut.2005.086900] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
BACKGROUND Relapse of ulcerative colitis is difficult to predict by routine colonoscopy. A high-resolution video-magnifying colonoscope with chromoscopy enables the observation of colorectal mucosal pit patterns. AIMS To investigate the association of pit patterns as assessed by magnifying colonoscopy (MCS) with histological inflammation and mucosal chemokine activity in patients with quiescent ulcerative colitis, and to prospectively analyse the prognostic factors that may predict exacerbations. METHODS MCS was performed in 113 patients with ulcerative colitis in remission. Pit patterns in the rectal mucosa were classified into four MCS grades on the basis of size, shape and arrangement. Mucosal interleukin (IL) 8 activity was measured in biopsy specimens of rectal mucosa and the specimens were assessed for histological disease activity. The patients were then followed until relapse or for a maximum of 12 months. Multivariate survival analysis was carried out to determine the independent predictors of clinical relapse. RESULTS A positive correlation was identified between MCS grade, histological grade (p = 0.001) and mucosal IL8 activity (p<0.001). Multivariate proportional hazard model analysis showed that MCS grade was a significant predictor of relapse (relative risk 2.06, p = 0.001). Kaplan-Meier estimate of relapse during 12 months of follow-up was found to increase with increasing MCS grade, with values of 0% for grade 1, 21% for grade 2, 43% for grade 3 and 60% for grade 4. CONCLUSION MCS grading is associated with the degree of histological inflammation and mucosal IL8 activity in patients with quiescent ulcerative colitis, and may predict the probability of subsequent disease relapse in patients with ulcerative colitis in remission.
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Affiliation(s)
- Y Nishio
- Department of Gastroenterology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan.
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Sawada K, Morishige KI, Ohmichi M, Nishio Y, Yamamoto T, Hayakawa J, Mabuchi S, Isobe A, Sasaki H, Sakata M, Tasaka K, Murata Y. Peripheral quantitative computed tomography (pQCT) is useful for monitoring bone mineral density of the patients who receive hormone replacement therapy. Maturitas 2006; 56:343-9. [PMID: 17010541 DOI: 10.1016/j.maturitas.2006.08.006] [Citation(s) in RCA: 12] [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] [Received: 02/04/2006] [Revised: 08/16/2006] [Accepted: 08/25/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVE A forearm fracture (Colles' fracture) is often the first sign of osteoporosis and should alert the patient and physician to the possibility of underlying skeletal fragility. Therefore, the establishment of a more accurate and reliable method for the measurement of bone mineral density (BMD) at the distal radius would be beneficial for the patients who suffer from osteoporosis. The objective of the present study was to evaluate the usefulness of peripheral quantitative computed tomography (pQCT) to assess the change of BMD at the distal radius in early postmenopausal women who receive hormone replacement therapy (HRT). METHODS Twenty healthy early postmenopausal women who were diagnosed as osteoporosis or osteopenia were randomized to either HRT or placebo treatment. We analyzed BMD of the distal radius by pQCT, lumbar spine by dual-energy X-ray absorptiometry (DXA) and the biochemical markers of bone turn over (osteocalcin, deoxypyridinoline) every 6 months. RESULTS The placebo group showed a significant decrease from the baseline in the trabecular BMD of the radius at 12 months (7.4+/-2.5%) (p<0.05), whereas the HRT group showed a slight increase (0.7+/-2.2%). The changes in the trabecular BMD of the radius between the HRT and placebo groups were statistically different at 12 months (p<0.05). On the other hand, in the cortical BMD of the radius, no significant differences were seen between the changes of bone densities in the HRT and control groups after 1 year of treatment. pQCT could detect a significant loss of BMD of the radius in early postmenopausal women after 1 year and HRT prevented its loss. CONCLUSION Our preliminary clinical trial showed that pQCT might be useful for the early detection of bone loss in early postmenopausal women and for the monitoring BMD of the patients who receive HRT.
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Affiliation(s)
- Kenjiro Sawada
- Department of Obstetrics and Gynecology, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, Japan
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Tamura M, Someya N, Nishio Y, Kajita K, Kashimura Y, Aonuma S, Sawa H, Kato R. Correlation Between the Thermal and Magnetic Properties of (DCNQI)2Cu. ACTA ACUST UNITED AC 2006. [DOI: 10.1080/10587259608030793] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- M. Tamura
- a Department of Physics , Toho University , Miyama 2-2-1, Funabashi, Chiba , 274 , Japan
| | - N. Someya
- a Department of Physics , Toho University , Miyama 2-2-1, Funabashi, Chiba , 274 , Japan
| | - Y. Nishio
- a Department of Physics , Toho University , Miyama 2-2-1, Funabashi, Chiba , 274 , Japan
| | - K. Kajita
- a Department of Physics , Toho University , Miyama 2-2-1, Funabashi, Chiba , 274 , Japan
| | - Y. Kashimura
- b Insitute for Solid State Physics, The University of Tokyo , Roppongi 7-22-1, Minato-ku, Tokyo , 106 , Japan
| | - S. Aonuma
- b Insitute for Solid State Physics, The University of Tokyo , Roppongi 7-22-1, Minato-ku, Tokyo , 106 , Japan
| | - H. Sawa
- b Insitute for Solid State Physics, The University of Tokyo , Roppongi 7-22-1, Minato-ku, Tokyo , 106 , Japan
| | - R. Kato
- b Insitute for Solid State Physics, The University of Tokyo , Roppongi 7-22-1, Minato-ku, Tokyo , 106 , Japan
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Affiliation(s)
- Y. Nishio
- a Faculty of Engineering Fukui University , Bunkyo 3—9—1, Fukui, 910, Japand
| | - T. Yamane
- a Faculty of Engineering Fukui University , Bunkyo 3—9—1, Fukui, 910, Japand
| | - T. Takahashi
- a Faculty of Engineering Fukui University , Bunkyo 3—9—1, Fukui, 910, Japand
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Affiliation(s)
- Y. Nishio
- a Faculty of Engineering Fukui University , Bunkyo 3-9-1, Fukui , 910 , Japan
| | - T. Takahashi
- a Faculty of Engineering Fukui University , Bunkyo 3-9-1, Fukui , 910 , Japan
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44
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Enomoto T, Yoshino K, Yamasaki M, Nishio Y, Wakimoto A, Miyake T, Fujiwara K, Takemura M, Ito K. A phase II study of combination CPT-11 and docetaxel in patients with ovarian carcinoma refractory or resistant to combination paclitaxel and carboplatin. J Clin Oncol 2006. [DOI: 10.1200/jco.2006.24.18_suppl.15036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
15036 Background: To investigate the efficacy and toxicity of combination irinotecan and docetaxel in patients with ovarian carcinoma refractory (not responded) or resistant (relapsed within 6 months after the last chemotherapy) to the first line chemotherapy with combination paclitaxel (175mg/m2) and carboplatin (AUC=5). Methods: 30 refractory patients and 28 resistant patients with measurable disease were treated with combination irinotecan (60 mg/m2) and docetaxel (30 mg/m2) at days 1 and 8 every 3 weeks for more than 2 courses. Results: The average number of courses administered was 2.6 for refractory cases and 3.4 for resistant cases. The average number of courses administered was 2.6 for refractory cases and 3.4 for resistant cases. Using RECIST criteria, 2/28 (7%) resistant cases responded completely, 6/30 (20%) of refractory cases and 6/28 (21%) resistant cases were responded partially. 16/30 refractory cases and 14/28 cases progressed. Grade 3–4 toxicities were leukopenia (31%) neutropenia (36%) thrombocytopenia (8%) and diarrhea (6%). Conclusions: Combination chemotherapy of CPT-11 and Docetaxel at days 1 and 8 every 3 weeks is a regimen with moderate toxicity and good compliance, and shows some response to those patients who are refractory or resistant to the first-line chemotherapy with paclitaxel and carboplatin with a response rate of 20% and 29%, respectively. No significant financial relationships to disclose.
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Affiliation(s)
- T. Enomoto
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - K. Yoshino
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - M. Yamasaki
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - Y. Nishio
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - A. Wakimoto
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - T. Miyake
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - K. Fujiwara
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - M. Takemura
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
| | - K. Ito
- Osaka Univ Faculty of Medcn, Osaka, Japan; Osaka University Faculty of Medicine, Osaka, Japan; Osaka Rosai Hospital, Osaka, Japan; Osaka Police Hospital, Osaka, Japan; Osaka Kosei-Nenkin Hospital, Osaka, Japan; Kansai Rosai Hospital, Amagasaki, Japan
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45
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Abstract
We describe a case of cardiac myxoma whose clinical presentation mimicked that of polyarteritis nodosa. The serum levels of MPO-ANCA and IL-6 were elevated on laboratory investigation and normalized after the removal of the tumor. We suggest that a 'true' vasculitic mechanism contributes to the pathogenesis of pseudovasculitis in cardiac myxoma.
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Affiliation(s)
- Y Nishio
- Department of Neurology, Jikei University Kashiwa Hospital, Kashiwa, Japan.
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46
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Mabuchi S, Ohmichi M, Nishio Y, Hayasaka T, Kimura A, Ohta T, Kawagoe J, Takahashi K, Yada-Hashimoto N, Seino-Noda H, Sakata M, Motoyama T, Kurachi H, Testa JR, Tasaka K, Murata Y. Inhibition of inhibitor of nuclear factor-kappaB phosphorylation increases the efficacy of paclitaxel in in vitro and in vivo ovarian cancer models. Clin Cancer Res 2005; 10:7645-54. [PMID: 15569997 DOI: 10.1158/1078-0432.ccr-04-0958] [Citation(s) in RCA: 102] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We investigated whether inhibition of nuclear factor-kappaB (NFkappaB) increases the efficacy of paclitaxel in in vitro and in vivo ovarian cancer models. Treatment of paclitaxel-sensitive Caov-3 cells with paclitaxel transiently activated the phosphorylation of Akt, the phosphorylation of IkappaB kinase (IKK), and the phosphorylation of inhibitor of NFkappaB (IkappaBalpha). Paclitaxel also caused a transient increase in NFkappaB activity, followed by a decrease in NFkappaB activity. We show an association between Akt and IKK and show that the phosphorylation of IKK induced by paclitaxel is blocked by treatment with a phosphatidylinositol 3-kinase inhibitor (wortmannin or LY294002). Furthermore, interference of the Akt signaling cascade inhibits the transient induction of IkappaBalpha phosphorylation and NFkappaB activity by paclitaxel. Inhibition of NFkappaB activity by treatment with an IkappaBalpha phosphorylation inhibitor (BAY 11-7085) attenuated both basal and transient induction of IkappaBalpha phosphorylation by paclitaxel. Treatment with BAY 11-7085 also enhanced the inhibition of NFkappaB activity by paclitaxel for up to 24 hours. In addition, treatment with BAY 11-7085 decreased the viability of cells treated with paclitaxel. Moreover, treatment with BAY 11-7085 increased the efficacy of paclitaxel-induced inhibition of intraabdominal dissemination and production of ascites in athymic nude mice inoculated intraperitoneally with Caov-3 cells. These results suggest that paclitaxel transiently induces NFkappaB activity via the phosphatidylinositol 3-kinase/Akt cascade and that combination therapy with paclitaxel and an NFkappaB inhibitor would increase the therapeutic efficacy of paclitaxel.
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Affiliation(s)
- Seiji Mabuchi
- Department of Obstetrics and Gynecology, Osaka University Medical School, Osaka, Japan
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Ishiyama T, Sato K, Nishio Y, Saiki T, Miyaura N. Regioselective aromatic C–H silylation of five-membered heteroarenes with fluorodisilanes catalyzed by iridium(i) complexes. Chem Commun (Camb) 2005:5065-7. [PMID: 16220172 DOI: 10.1039/b511171d] [Citation(s) in RCA: 69] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aromatic C-H silylation of five-membered heteroarenes with 1,2-di-tert-butyl-1,1,2,2-tetrafluorodisilane regioselectively proceeded at 120 degrees C in octane in the presence of a catalytic amount of iridium(I) complexes generated from 1/2[Ir(OMe)(COD)]2 and 2-tert-butyl-1,10-phenanthroline.
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Affiliation(s)
- Tatsuo Ishiyama
- Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, Sapporo, 060-8628, Japan.
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Nishio Y, Hayashi N, Hamada H, Hirashima Y, Endo S. A case of delayed brain abscess due to a retained intracranial wooden foreign body: a case report and review of the last 20 years. Acta Neurochir (Wien) 2004; 146:847-50. [PMID: 15254807 DOI: 10.1007/s00701-004-0283-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
A 13-year-old female is presented. When she was six years old, she had fallen, holding wooden chopsticks and got stuck with a chopstick in the right upper eyelid. She was brought to a physician immediately, but a residual foreign body was missed and no particular symptom had developed during 7 years. She visited our department with fever and headache, and a brain abscess and an intracranial foreign body were found on computed tomography (CT) and magnetic resonance image (MRI) 7 years after the penetrating injury. She underwent removal of the object and abscess by craniotomy and recovered without neurological abnormalities. Since intracranial retained wooden foreign bodies frequently cause delayed complications of severe central nervous system infection, surgical removal is necessary even in the absence of symptoms.
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Affiliation(s)
- Y Nishio
- Department of Neurosurgery, Toyama Medical and Pharmaceutical University, Toyama, Japan.
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Kimura A, Ohmichi M, Kawagoe J, Kyo S, Mabuchi S, Takahashi T, Ohshima C, Arimoto-Ishida E, Nishio Y, Inoue M, Kurachi H, Tasaka K, Murata Y. Induction of hTERT expression and phosphorylation by estrogen via Akt cascade in human ovarian cancer cell lines. Oncogene 2004; 23:4505-15. [PMID: 15048073 DOI: 10.1038/sj.onc.1207582] [Citation(s) in RCA: 104] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We examined the mechanism by which estrogen regulates telomerase activity in Caov-3 human ovarian cancer cell lines, which express ER, to determine whether the regulation affects the expression and/or phosphorylation of the telomerase catalytic subunit (hTERT). 17beta-Estradiol (E(2)) induced telomerase activity and hTERT expression. Transient expression assays using luciferase reporter plasmids containing various fragments of hTERT promoter showed that the estrogen-responsive element appeared to be partially responsible for the E(2)-induced activation of the hTERT promoter. Either pretreatment with a phosphatidylinositol 3-kinase (PI3K) inhibitor, LY294002, or transfection with a dominant-negative Akt attenuated the E(2)-induced activation of the hTERT promoter. In addition, estrogen induced the phosphorylation of IkappaB inhibitor protein via the Akt cascade, and cotransfection with a dominant-negative subunit of NFkappaB attenuated the response of the ERE-deleted hTERT promoter to E(2). Moreover, E(2) induced the phosphorylation of hTERT, the association of 14-3-3 protein and NFkappaB with hTERT, and nuclear accumulation of hTERT in an Akt-dependent manner. These results indicate that E(2) induces telomerase activity not only by transcriptional regulation of hTERT via an ERE-dependent mechanism and a PI3K/Akt/NFkappaB cascade, but also by post-transcriptional regulation via Akt-dependent phosphorylation of hTERT. Thus, the phosphorylation of Akt is a key event in the induction of telomerase activity by E(2) in human ovarian cancer cells.
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Affiliation(s)
- Akiko Kimura
- Department of Obstetrics and Gynecology, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan
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Nishio Y, Noguchi E, Shibasaki M, Kamioka M, Ichikawa E, Ichikawa K, Umebayashi Y, Otsuka F, Arinami T. Association between polymorphisms in the SPINK5 gene and atopic dermatitis in the Japanese. Genes Immun 2004; 4:515-7. [PMID: 14551605 DOI: 10.1038/sj.gene.6363889] [Citation(s) in RCA: 95] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Atopy, which is characterized by increased levels of immunoglobulin E (IgE) against common environmental allergens, is considered the strongest predisposing factor for asthma and atopic dermatitis (AD). Mutations in the gene encoding serine protease inhibitor Kazal-type 5 (SPINK5) are responsible for Netherton syndrome, a rare skin disorder characterized by greatly elevated IgE levels with atopic manifestations. A recent study of Caucasian AD families showed that maternally derived alleles of the SPINK5 gene are associated with development of AD and asthma, suggesting the parent-of-origin effect for the development of atopic diseases in the SPINK5 gene. We studied the possible association of the SPINK5 gene for the development of atopic diseases by determining the genotypes of five polymorphisms in a Japanese population. Ttransmission disequilibrium tests revealed an association of SPINK5 polymorphisms with AD but not with asthma. Our data indicate that the SPINK5 gene is associated with AD across ethnicities.
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Affiliation(s)
- Y Nishio
- Department of Medical Genetics, Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Japan
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