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Matsuo M, Sakakibara T, Sakiyama Y, So T, Kosuga M, Kakiuchi T, Ichinose F, Nakamura T, Ishitsuka Y, Irie T. Long-term efficacy of intrathecal cyclodextrin in patients with Niemann-Pick disease type C. Brain Dev 2024; 46:207-212. [PMID: 38448301 DOI: 10.1016/j.braindev.2024.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/09/2024] [Accepted: 03/03/2024] [Indexed: 03/08/2024]
Abstract
BACKGROUND AND OBJECTIVES Niemann-Pick type C (NPC) is a rare lysosomal storage disease characterized by hepatosplenomegaly and progressive neurological deterioration due to abnormal intracellular cholesterol transport. Cyclic oligosaccharide 2-hydroxypropyl-β-cyclodextrin (HPBCD) is an effective treatment for NPC; however, few reports have shown its long-term efficacy and safety. To demonstrate long-term efficacy and safety of intrathecal HPBCD (IT-HPBCD) treatment for NPC, we herein reports five patients with NPC treated using IT-HPBCD for 4-11 years. CASES AND RESULTS Patients' ages at the onset ranged from 1.5 to 20 years. Notably, all patients showed rapid disease progression despite treatment with miglustat before IT-HPBCD treatment. Similarly, some patients showed transient improvement; however, all patients' conditions stabilized after long-term IT-HPBCD therapy. Mild-to-moderate hearing loss was observed in three patients. Furthermore, long-term treatment with IT-HPBCD may suppress neurological deterioration in patients with NPC; however, patients still experience some disease progression. CONCLUSIONS Long-term treatment with IT-HPBCD may suppress neurological deterioration in patients with NPC; however, the treatment outcome is dependent on the neurological status at the time of diagnosis, and disease progression is not completely inhibited. Awareness of the disease and newborn screening is needed for earlier disease detection. In addition, further optimization of the treatment protocol and additional treatments are needed to improve patient outcomes.
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Affiliation(s)
- Muneaki Matsuo
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan.
| | | | - Yoshio Sakiyama
- Department of Neurology, Jichi Medical University, Saitama Medical Center, Japan
| | - Tetsumin So
- Division of Medical Genetics, National Center for Child Health and Development, Japan
| | - Motomichi Kosuga
- Division of Medical Genetics, National Center for Child Health and Development, Japan
| | - Toshihiko Kakiuchi
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Fumio Ichinose
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Takuji Nakamura
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
| | - Yoichi Ishitsuka
- Department of Clinical Chemistry and Informatics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
| | - Tetsumi Irie
- Department of Clinical Chemistry and Informatics, Graduate School of Pharmaceutical Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan; Department of Pharmaceutical Packaging Technology, Faculty of Life Sciences, Kumamoto University, 5-1 Oe-honmachi, Chuo-ku, Kumamoto 862-0973, Japan
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Tamura K, Sasaki R, Sakakibara T, Dahal R, Takeshima Y, Matsuda R, Yamada S, Nishimura F, Nakagawa I, Park YS, Hirabayashi H, Nakase H. Additional Effect of High-output Current and/or High-duty Cycle in Vagus Nerve Stimulation for Adolescent/Adult Intractable Epilepsy. Neurol Med Chir (Tokyo) 2023; 63:273-282. [PMID: 37045770 PMCID: PMC10406457 DOI: 10.2176/jns-nmc.2022-0280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 02/20/2023] [Indexed: 04/14/2023] Open
Abstract
A vagus nerve stimulation (VNS) device delivers electrical pulses to the vagus nerve at a rhythm defined by the duty cycle. The standard therapeutic range is advocated for an output current of 1.5-2.25 mA and a duty cycle of 10%. As the optimal settings vary from patient to patient, some patients may benefit from additional seizure reduction when stimulated beyond the standard range. A total of 74 patients (15 children aged <12 years and 59 adolescents/adults) who underwent VNS implantation between 2011 and 2020 and who were followed up for at least 2 years were included in this retrospective study. Stimulation parameters exceeding 2.25 mA of output current, 25% of duty cycle, and 0.5625 (2.25 mA × 25%) of current × duty cycle were defined as high stimulation. The proportion achieved an additional seizure reduction of 20%, and the 50% seizure reduction rate at the last follow-up was compared between adolescents/adults and children. Approximately 40% of patients in adolescents/adults treated with high stimulation experienced an additional acute effect, resulting in a 50% or greater reduction in seizures in almost all patients. Moreover, in adolescents/adults, 22.2%-41.9% of the patients were treated with high stimulation, and the responder rate was 69.5%. Conversely, the responder rate in children was 26.7%, significantly worse than that in adolescents/adults, despite higher stimulation. VNS with high-stimulation settings is effective for adolescent and adult patients with intractable epilepsy. Even high stimulation may not be effective in extremely refractory pediatric epilepsy with a high seizure frequency.
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Affiliation(s)
- Kentaro Tamura
- Department of Neurosurgery, Nara Medical University
- Epilepsy Center, National Hospital Organization Nara Medical Center
| | - Ryota Sasaki
- Department of Neurosurgery, Nara Medical University
- Epilepsy Center, National Hospital Organization Nara Medical Center
| | - Takafumi Sakakibara
- Epilepsy Center, National Hospital Organization Nara Medical Center
- Department of Pediatrics, Nara Medical University
| | - Riju Dahal
- Department of Neurosurgery, Nara Medical University
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Sakamoto M, Iwama K, Sasaki M, Ishiyama A, Komaki H, Saito T, Takeshita E, Shimizu-Motohashi Y, Haginoya K, Kobayashi T, Goto T, Tsuyusaki Y, Iai M, Kurosawa K, Osaka H, Tohyama J, Kobayashi Y, Okamoto N, Suzuki Y, Kumada S, Inoue K, Mashimo H, Arisaka A, Kuki I, Saijo H, Yokochi K, Kato M, Inaba Y, Gomi Y, Saitoh S, Shirai K, Morimoto M, Izumi Y, Watanabe Y, Nagamitsu SI, Sakai Y, Fukumura S, Muramatsu K, Ogata T, Yamada K, Ishigaki K, Hirasawa K, Shimoda K, Akasaka M, Kohashi K, Sakakibara T, Ikuno M, Sugino N, Yonekawa T, Gürsoy S, Cinleti T, Kim CA, Teik KW, Yan CM, Haniffa M, Ohba C, Ito S, Saitsu H, Saida K, Tsuchida N, Uchiyama Y, Koshimizu E, Fujita A, Hamanaka K, Misawa K, Miyatake S, Mizuguchi T, Miyake N, Matsumoto N. Genetic and clinical landscape of childhood cerebellar hypoplasia and atrophy. Genet Med 2022; 24:2453-2463. [PMID: 36305856 DOI: 10.1016/j.gim.2022.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 08/15/2022] [Accepted: 08/15/2022] [Indexed: 11/06/2022] Open
Abstract
PURPOSE Cerebellar hypoplasia and atrophy (CBHA) in children is an extremely heterogeneous group of disorders, but few comprehensive genetic studies have been reported. Comprehensive genetic analysis of CBHA patients may help differentiating atrophy and hypoplasia and potentially improve their prognostic aspects. METHODS Patients with CBHA in 176 families were genetically examined using exome sequencing. Patients with disease-causing variants were clinically evaluated. RESULTS Disease-causing variants were identified in 96 of the 176 families (54.5%). After excluding 6 families, 48 patients from 42 families were categorized as having syndromic associations with CBHA, whereas the remaining 51 patients from 48 families had isolated CBHA. In 51 patients, 26 aberrant genes were identified, of which, 20 (76.9%) caused disease in 1 family each. The most prevalent genes were CACNA1A, ITPR1, and KIF1A. Of the 26 aberrant genes, 21 and 1 were functionally annotated to atrophy and hypoplasia, respectively. CBHA+S was more clinically severe than CBHA-S. Notably, ARG1 and FOLR1 variants were identified in 2 families, leading to medical treatments. CONCLUSION A wide genetic and clinical diversity of CBHA was revealed through exome sequencing in this cohort, which highlights the importance of comprehensive genetic analyses. Furthermore, molecular-based treatment was available for 2 families.
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Affiliation(s)
- Masamune Sakamoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kazuhiro Iwama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Masayuki Sasaki
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Hirofumi Komaki
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Takashi Saito
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Eri Takeshita
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yuko Shimizu-Motohashi
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Kazuhiro Haginoya
- Department of Pediatric Neurology, Miyagi Children's Hospital, Sendai, Japan
| | - Tomoko Kobayashi
- Department of Pediatrics, Tohoku University Hospital, Tohoku University, Sendai, Japan; Tohoku Medical Megabank Organization, Tohoku University, Sendai, Japan
| | - Tomohide Goto
- Department of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Yu Tsuyusaki
- Department of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Mizue Iai
- Department of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Kenji Kurosawa
- Division of Medical Genetics, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Hitoshi Osaka
- Department of Neurology, Kanagawa Children's Medical Center, Yokohama, Japan; Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - Jun Tohyama
- Department of Child Neurology, NHO Nishiniigata Chuo Hospital, Niigata, Japan
| | - Yu Kobayashi
- Department of Child Neurology, NHO Nishiniigata Chuo Hospital, Niigata, Japan
| | - Nobuhiko Okamoto
- Department of Medical Genetics, Osaka Women's and Children's Hospital, Izumi, Japan
| | - Yume Suzuki
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan
| | - Satoko Kumada
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Kenji Inoue
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Hideaki Mashimo
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Atsuko Arisaka
- Department of Neuropediatrics, Tokyo Metropolitan Neurological Hospital, Tokyo, Japan
| | - Ichiro Kuki
- Department of Pediatric Neurology, Children's Medical Center, Osaka City General Hospital, Osaka, Japan
| | - Harumi Saijo
- Department of Pediatrics, Tokyo Metropolitan Higashiyamato Medical Center for Developmental/Multiple Disabilities, Tokyo, Japan
| | - Kenji Yokochi
- Department of Pediatric Neurology, Seirei-Mikatahara General Hospital, Hamamatsu, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Tokyo, Japan
| | - Yuji Inaba
- Division of Neurology, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Yuko Gomi
- Division of Rehabilitation, Nagano Children's Hospital, Azumino, Nagano, Japan
| | - Shinji Saitoh
- Department of Pediatrics and Neonatology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Kentaro Shirai
- Department of Pediatrics, Tsuchiura Kyodo General Hospital, Ibaraki, Japan
| | - Masafumi Morimoto
- Department of Pediatrics, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yuishin Izumi
- Department of Clinical Neuroscience, Institute of Biomedical Sciences, Tokushima University Graduate School, Tokushima, Japan
| | - Yoriko Watanabe
- Department of Pediatrics and Child Health, Kurume University School of Medicine, Kurume, Japan
| | | | - Yasunari Sakai
- Department of Pediatrics, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shinobu Fukumura
- Department of Pediatrics, School of Medicine, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kazuhiro Muramatsu
- Department of Pediatrics, Jichi Medical University, Tochigi, Japan; Department of Pediatrics, Graduate School of Medicine, Gunma University, Gunma, Japan
| | - Tomomi Ogata
- Department of Pediatrics, Graduate School of Medicine, Gunma University, Gunma, Japan
| | - Keitaro Yamada
- Department of Pediatric Neurology, Aichi Developmental Disability Center Central Hospital, Aichi, Japan
| | - Keiko Ishigaki
- Department of Pediatrics, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Kyoko Hirasawa
- Department of Pediatrics, School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Konomi Shimoda
- Department of Pediatrics, Graduate School of Medicine, The University of Tokyo, Tokyo, Japan
| | - Manami Akasaka
- Department of Pediatrics, School of Medicine, Iwate Medical University, Iwate, Japan
| | - Kosuke Kohashi
- Department of Pediatrics, Matsudo City General Hospital, Matsudo, Japan
| | | | - Masashi Ikuno
- Department of Neurology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Noriko Sugino
- Department of Neonatology, Mie Chuo Medical Center, National Hospital Organization, Tsu, Japan
| | - Takahiro Yonekawa
- Department of Pediatrics, Mie University School of Medicine, Mie, Japan
| | - Semra Gürsoy
- Department of Pediatric Genetics, S.B.Ü. Dr. Behçet Uz Children's Education and Research Hospital, Izmir, Turkey
| | - Tayfun Cinleti
- Department of Pediatric Genetics, Faculty of Medicine, Dokuz Eylul University, Izmir, Turkey
| | - Chong Ae Kim
- Unidade de Genética Clínica, Instituto da Criança do Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Keng Wee Teik
- Department of Genetics, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Chan Mei Yan
- Department of Genetics, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Muzhirah Haniffa
- Department of Genetics, Hospital Kuala Lumpur, Kuala Lumpur, Malaysia
| | - Chihiro Ohba
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Shuuichi Ito
- Department of Pediatrics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Hirotomo Saitsu
- Department of Biochemistry, Hamamatsu University School of Medicine, Hamamatsu, Japan
| | - Ken Saida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Naomi Tsuchida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Yuri Uchiyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kohei Hamanaka
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Kazuharu Misawa
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; RIKEN Center for Advanced Intelligence Project, Tokyo, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Clinical Genetics, Yokohama City University Hospital, Yokohama, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Human Genetics, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan.
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Ahn DS, Amano J, Baba H, Fukuda N, Geissel H, Inabe N, Ishikawa S, Iwasa N, Komatsubara T, Kubo T, Kusaka K, Morrissey DJ, Nakamura T, Ohtake M, Otsu H, Sakakibara T, Sato H, Sherrill BM, Shimizu Y, Sumikama T, Suzuki H, Takeda H, Tarasov OB, Ueno H, Yanagisawa Y, Yoshida K. Discovery of ^{39}Na. Phys Rev Lett 2022; 129:212502. [PMID: 36461972 DOI: 10.1103/physrevlett.129.212502] [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: 07/14/2022] [Revised: 09/08/2022] [Accepted: 09/14/2022] [Indexed: 06/17/2023]
Abstract
The new isotope ^{39}Na, the most neutron-rich sodium nucleus observed so far, was discovered at the RIKEN Nishina Center Radioactive Isotope Beam Factory using the projectile fragmentation of an intense ^{48}Ca beam at 345 MeV/nucleon on a beryllium target. Projectile fragments were separated and identified in flight with the large-acceptance two-stage separator BigRIPS. Nine ^{39}Na events have been unambiguously observed in this work and clearly establish the particle stability of ^{39}Na. Furthermore, the lack of observation of ^{35,36}Ne isotopes in this experiment significantly improves the overall confidence that ^{34}Ne is the neutron dripline nucleus of neon. These results provide new key information to understand nuclear binding and nuclear structure under extremely neutron-rich conditions. The newly established stability of ^{39}Na has a significant impact on nuclear models and theories predicting the neutron dripline and also provides a key to understanding the nuclear shell property of ^{39}Na at the neutron number N=28, which is normally a magic number.
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Affiliation(s)
- D S Ahn
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - J Amano
- Department of Physics, Rikkyo University, 3-34-1 Nishi-Ikebukuro, Toshima, Tokyo 171-8501, Japan
| | - H Baba
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - N Fukuda
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Geissel
- GSI, Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - N Inabe
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ishikawa
- Department of Physics, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - N Iwasa
- Department of Physics, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - T Komatsubara
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Kubo
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Kusaka
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D J Morrissey
- National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
| | - T Nakamura
- Department of Physics, Tokyo Institute of Technology, 2-12-1 O-Okayama, Meguro, Tokyo 152-8551, Japan
| | - M Ohtake
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Otsu
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Sakakibara
- Department of Physics, Tohoku University, 6-3, Aramaki Aza-Aoba, Aoba-ku, Sendai, Miyagi 980-8578, Japan
| | - H Sato
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Sherrill
- National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
| | - Y Shimizu
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Sumikama
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Takeda
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - O B Tarasov
- National Superconducting Cyclotron Laboratory, Michigan State University, 640 South Shaw Lane, East Lansing, Michigan 48824, USA
| | - H Ueno
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Yanagisawa
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoshida
- RIKEN Nishina Center for Accelerator-Based Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Takeda Y, Sakakibara T, Ogiwara K, Nogami K. Blood coagulation dynamics during adrenocorticotropic hormone therapy in pediatric patients with infantile spasms. Brain Dev 2022; 44:546-550. [PMID: 35501182 DOI: 10.1016/j.braindev.2022.04.005] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 04/08/2022] [Accepted: 04/12/2022] [Indexed: 10/18/2022]
Abstract
INTRODUCTION Adrenocorticotropic hormone (ACTH) therapy is a first-line treatment for infantile spasms, which may rarely cause intracranial hemorrhage. However, the changes in blood coagulation during ACTH therapy are poorly understood, with little description in the management guidelines. OBJECTIVE To assess the changes in blood coagulation during ACTH therapy. PATIENTS/METHODS This retrospective study reviewed the medical records of 10 patients diagnosed with infantile spasms and treated with ACTH therapy, between January 2015 and March 2021. The underlying diseases included intracranial hemorrhage, hypoxic-ischemic encephalopathy, tuberous sclerosis, and cerebral infarction. Antiepileptic drugs administered were valproic acid (VPA), vitamin B6, zonisamide, topiramate, clobazam, clonazepam, and phenobarbital. RESULTS The 10 patients had a median age of 8 months (4-17 months) and included eight males. The median fibrinogen (Fbg) level before ACTH therapy was 202 mg/dL (125-392 mg/dL); however, this significantly decreased to 108.5 mg/dL (65-135 mg/dL) during treatment at a median of 12 days after (days 8-17) (p < 0.01). Decreased Fbg levels were observed with and without VPA. This suggests the possible influence of ACTH therapy on Fbg levels, irrespective of the VPA combination. Additionally, prothrombin time and activated partial thromboplastin time were significantly shortened when compared to those before ACTH therapy and at the lowest of Fbg levels. CONCLUSIONS Careful coagulation monitoring, especially during the second week of treatment, is necessary for the safe completion of ACTH therapy, with or without concomitant VPA.
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Affiliation(s)
- Yoko Takeda
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan.
| | | | - Kenichi Ogiwara
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan.
| | - Keiji Nogami
- Department of Pediatrics, Nara Medical University, Kashihara, Nara, Japan.
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Saida K, Chong PF, Yamaguchi A, Saito N, Ikehara H, Koshimizu E, Miyata R, Ishiko A, Nakamura K, Ohnishi H, Fujioka K, Sakakibara T, Asada H, Ogawa K, Kudo K, Ohashi E, Kawai M, Abe Y, Tsuchida N, Uchiyama Y, Hamanaka K, Fujita A, Mizuguchi T, Miyatake S, Miyake N, Kato M, Kira R, Matsumoto N. Monogenic causes of pigmentary mosaicism. Hum Genet 2022; 141:1771-1784. [PMID: 35503477 DOI: 10.1007/s00439-022-02437-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/28/2022] [Indexed: 12/30/2022]
Abstract
Pigmentary mosaicism of the Ito type, also known as hypomelanosis of Ito, is a neurocutaneous syndrome considered to be predominantly caused by somatic chromosomal mosaicism. However, a few monogenic causes of pigmentary mosaicism have been recently reported. Eleven unrelated individuals with pigmentary mosaicism (mostly hypopigmented skin) were recruited for this study. Skin punch biopsies of the probands and trio-based blood samples (from probands and both biological parents) were collected, and genomic DNA was extracted and analyzed by exome sequencing. In all patients, plausible monogenic causes were detected with somatic and germline variants identified in five and six patients, respectively. Among the somatic variants, four patients had MTOR variant (36%) and another had an RHOA variant. De novo germline variants in USP9X, TFE3, and KCNQ5 were detected in two, one, and one patients, respectively. A maternally inherited PHF6 variant was detected in one patient with hyperpigmented skin. Compound heterozygous GTF3C5 variants were highlighted as strong candidates in the remaining patient. Exome sequencing, using patients' blood and skin samples is highly recommended as the first choice for detecting causative genetic variants of pigmentary mosaicism.
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Affiliation(s)
- Ken Saida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Pin Fee Chong
- Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Asuka Yamaguchi
- Department of Pediatrics, Tokyo-Kita Medical Center, Tokyo, Japan
| | - Naka Saito
- Department of Pediatrics, Tsuruoka Municipal Shonai Hospital, Yamagata, Japan
| | - Hajime Ikehara
- Department of Pediatrics, Chiba University Graduate School of Medicine, Chiba, Japan
| | - Eriko Koshimizu
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Rie Miyata
- Department of Pediatrics, Tokyo-Kita Medical Center, Tokyo, Japan
| | - Akira Ishiko
- Department of Dermatology, Toho University School of Medicine, Tokyo, Japan
| | - Kazuyuki Nakamura
- Department of Pediatrics, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Hidenori Ohnishi
- Department of Pediatrics, Gifu University Graduate School of Medicine, Gifu, Japan
| | - Kei Fujioka
- Center of General Internal Medicine and Rheumatology, Gifu Municipal Hospital, Gifu, Japan
| | - Takafumi Sakakibara
- Department of Pediatrics, Nara Medical University School of Medicine, Nara, Japan
| | - Hideo Asada
- Department of Dermatology, Nara Medical University School of Medicine, Nara, Japan
| | - Kohei Ogawa
- Department of Dermatology, Nara Medical University School of Medicine, Nara, Japan
| | - Kyoko Kudo
- Department of Dermatology, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Eri Ohashi
- Division of Neurology, National Center for Child Health and Development, Tokyo, Japan
| | - Michiko Kawai
- Division of Neurology, National Center for Child Health and Development, Tokyo, Japan
| | - Yuichi Abe
- Division of Neurology, National Center for Child Health and Development, Tokyo, Japan
| | - Naomi Tsuchida
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Yuri Uchiyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Rare Disease Genomics, Yokohama City University Hospital, Yokohama, Japan
| | - Kohei Hamanaka
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Atsushi Fujita
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Takeshi Mizuguchi
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Clinical Genetics Department, Yokohama City University Hospital, Yokohama, Japan
| | - Noriko Miyake
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.,Department of Human Genetics, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Shinagawa-ku, Tokyo, Japan
| | - Ryutaro Kira
- Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, 236-0004, Japan.
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7
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Ichinose F, Nakamura T, Kira R, Furuno K, Ishii S, Takamura K, Hashiguchi M, Inoue T, Senju A, Ichimiya Y, Sakakibara T, Sugiyama N, Naitou T, Higuchi N, Togawa M, Torii KI, Toda S, Iwamatsu H, Sato T, Tsurui S, Tanaka H, Motobayashi M, Abe A, Kawaguchi A, Matsuo M. Incidence and risk factors of acute encephalopathy with biphasic seizures in febrile status epilepticus. Brain Dev 2022; 44:36-43. [PMID: 34362595 DOI: 10.1016/j.braindev.2021.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Revised: 07/12/2021] [Accepted: 07/13/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To clarify the incidence and risk factors of acute encephalopathy with biphasic seizures and late reduced diffusion (AESD) in pediatric patients with febrile status epilepticus (FSE). METHODS We retrospectively surveyed patients with FSE (≥20 min and ≥40 min) who were younger than 6 years by mailing a questionnaire to 1123 hospitals in Japan. The survey period was 2 years. We then collected clinical data on patients with prolonged febrile seizures (PFS) ≥40 min and those with AESD, and compared clinical data between the PFS and AESD groups. RESULTS The response rate for the primary survey was 42.3%, and 28.0% of hospitals which had applicable cases responded in the secondary survey. The incidence of AESD was 4.3% in patients with FSE ≥20 min and 7.1% in those with FSE ≥40 min. In the second survey, a total of 548 patients had FSE ≥40 min (AESD group, n = 93; PFS group, n = 455). Univariate analysis revealed significant between-group differences in pH, aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, creatine kinase, NH3, procalcitonin (PCT), uric acid, blood urea nitrogen, creatinine (Cr), and lactate. Multivariate analysis using stratified values showed that high PCT was an only risk factor for AESD. A prediction score of ≥3 was indicative of AESD, as determined using the following indexes: HCO3- < 20 mmol/L (1 point), Cl <100 mEq/L (1 point), Cr ≥0.35 mg/dL (1 point), glucose ≥200 mg/dL (1 point), and PCT ≥1.7 pg/mL (2 points). The scoring system had sensitivity of 84.2% and specificity of 81.0%. CONCLUSION Incidence data and prediction scores for AESD will be useful for future intervention trials for AESD.
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Affiliation(s)
- Fumio Ichinose
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan.
| | - Takuji Nakamura
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan; Department of Pediatrics, National Hospital Organization Ureshino Medical Center, Saga, Japan
| | - Ryutaro Kira
- Department of Pediatric Neurology, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Kenji Furuno
- Department of General Medicine, Fukuoka Children's Hospital, Fukuoka, Japan
| | - Shigeki Ishii
- Department of Pediatrics, Miyazaki Prefectural Miyazaki Hospital, Miyazaki, Japan
| | - Kazunari Takamura
- Department of Pediatrics, Miyazaki Prefectural Miyazaki Hospital, Miyazaki, Japan
| | - Marina Hashiguchi
- Department of Pediatrics, Japan Organization of Occupational Health and Safety, Yokohama Rosai Hospital, Kanagawa, Japan
| | - Takushi Inoue
- Department of Pediatrics, National Hospital Organization Okayama Medical Center, Okayama, Japan
| | - Ayako Senju
- Department of Pediatrics, Kitakyushu General Hospital, Fukuoka, Japan
| | - Yuko Ichimiya
- Department of Pediatrics, Faculty of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | - Nobuyoshi Sugiyama
- Department of Pediatrics, School of Medicine, Tokai University, Kanagawa, Japan
| | - Tomomi Naitou
- Department of Pediatrics, Saiseikai Kawaguchi General Hospital, Saitama, Japan
| | - Naoya Higuchi
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan; Department of Pediatrics, Saga Prefectural Medical Center Koseikan, Saga, Japan
| | - Masami Togawa
- Department of Pediatrics, Tottori Prefectural Central Hospital, Tottori, Japan
| | - Ken-Ichi Torii
- Department of Pediatrics, Tokyo Metropolitan Ohtsuka Hospital, Tokyo, Japan
| | - Soichiro Toda
- Department of Pediatrics, Kameda Medical Center, Chiba, Japan
| | - Hiroko Iwamatsu
- Department of Pediatrics, Oita Prefectural Hospital, Oita, Japan
| | - Tatsuharu Sato
- Department of Pediatrics, Nagasaki University Hospital, Nagasaki, Japan
| | - Satoshi Tsurui
- Department of Pediatrics, Seirei Numazu Hospital, Shizuoka, Japan
| | - Hidenori Tanaka
- Department of Pediatrics, Komaki City Hospital, Aichi, Japan
| | - Mitsuo Motobayashi
- Department of Pediatric Neurology, Nagano Children's Hospital, Nagano, Japan
| | - Akiko Abe
- Department of Pediatrics, Yamagata City Hospital Saiseikan, Yamagata, Japan
| | - Atsushi Kawaguchi
- Education and Research Center for Community Medicine, Saga University, Saga, Japan
| | - Muneaki Matsuo
- Department of Pediatrics, Faculty of Medicine, Saga University, Saga, Japan
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8
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Takatsu H, Onoda S, Kittaka S, Kasahara A, Kono Y, Sakakibara T, Kato Y, Fåk B, Ollivier J, Lynn JW, Taniguchi T, Wakita M, Kadowaki H. Erratum: Quadrupole Order in the Frustrated Pyrochlore Tb_{2+x}Ti_{2-x}O_{7+y} [Phys. Rev. Lett. 116, 217201 (2016)]. Phys Rev Lett 2021; 127:069902. [PMID: 34420355 DOI: 10.1103/physrevlett.127.069902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 06/13/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.116.217201.
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9
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Furuichi Y, Sakakibara T, Nezu S, Saeki K, Obayashi K, Kurumatani N, Hoshida T, Doi T, Miki N, Kinoshita S, Shima M. Analysis of factors related to low health-related quality of life in children with epilepsy using a self-assessed Japanese version of the KIDSCREEN-52. Brain Dev 2021; 43:78-88. [PMID: 32718673 DOI: 10.1016/j.braindev.2020.07.002] [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] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 05/20/2020] [Accepted: 07/02/2020] [Indexed: 12/14/2022]
Abstract
BACKGROUND There is a paucity of studies on self-assessed generic health-related quality of life (HRQOL) in children with epilepsy. The purpose of this study was to investigate generic HRQOL and associated factors among Japanese children with epilepsy. METHODS In this clinic-based study, 277 children (aged 8-18 years) with epilepsy and 429 children without any chronic illnesses were recruited. HRQOL was evaluated using the Japanese version of the KIDSCREEN-52 self-reported questionnaire, which consisted of 52 items categorized into 10 dimensions related to the environment surrounding children. Multiple regression analysis was applied to explore related factors with low HRQOL in each dimension. RESULTS We obtained the questionnaire from 171 (61.7%) and 306 (71.3%) children in the epilepsy and control groups, respectively. Short treatment period (<2 years), seizure lasting >30 min, and post-ictal symptoms were associated with a low HRQOL for School Environment (OR: 3.81; 95% CI: 1.34-10.86), Moods & Emotions (OR: 3.82; 95% CI: 1.67-8.78), and Parent Relations & Home Life (OR: 3.53; 95% CI: 1.29-9.72) dimensions, respectively. Complex neurodevelopmental disorders were associated with a low HRQOL for Social Support & Peers (OR: 3.59; 95% CI: 1.33-9.66), School Environment (OR: 2.49; 95% CI: 1.07-5.77), and Psychological Well-being (OR: 3.47; 95% CI: 1.20-10.00) dimensions. CONCLUSIONS Our results suggest that early psychosocial support and better management of epilepsy may improve HRQOL. More support in school environments may be required for children with epilepsy and neurodevelopmental disorders.
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Affiliation(s)
- Yasuko Furuichi
- Department of Pediatrics, Higashiosaka City Medical Center, Japan
| | - Takafumi Sakakibara
- Department of Pediatrics, Nara Medical University, Japan; Epilepsy Center, National Hospital Organization Nara Medical Center, Japan.
| | | | - Keigo Saeki
- Department of Epidemiology, Nara Medical University School of Medicine, Japan
| | - Kenji Obayashi
- Department of Epidemiology, Nara Medical University School of Medicine, Japan
| | - Norio Kurumatani
- Department of Epidemiology, Nara Medical University School of Medicine, Japan
| | - Toru Hoshida
- Epilepsy Center, National Hospital Organization Nara Medical Center, Japan
| | | | - Naoki Miki
- Department of Pediatrics, Tenri Hospital, Japan
| | - Seiji Kinoshita
- Department of Pediatrics, Higashiosaka City Medical Center, Japan
| | - Midori Shima
- Department of Pediatrics, Nara Medical University, Japan
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10
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Kondo Y, Sakakibara T, Furuta M, Kato J, Kato A, Mase S, Sasaki H, Miyake Y. 333MO Cost-utility analysis of olanzapine in Japanese patients treated with cisplatin-containing highly emetogenic chemotherapy. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.10.327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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11
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Umemoto N, Imaoka T, Inoue S, Oshima S, Itou R, Sakakibara T, Shimizu K, Ishii H, Murohara T. Impact of stress myocardial blood flow as an important predictor for major adverse cardiac and cerebrovascular event in hemodialysis patients, even in patients without myocardial perfusion abnormality. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0312] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
In the clinical setting, ischemic heart disease (IHD) is a major problem not only in general patients but also in regular hemodialysis (HD) patients. Positron emission tomography (PET) is becoming a reliable modality for detecting coronary artery disease. Of course, PET illustrates myocardial perfusion (MP), PET also measures myocardial blood flow (MBF) directly. We have reported stress MBF is an independent predictor in HD population. Although some prior studies show CFR is an independent predictor for their prognosis in patients without MP abnormality, there is limited data about the predictability of stress MBF in HD patients without MP abnormality.
Methods
A total 438 of HD patients who undergone 13NH3PET for suspected IHD were enrolled. All patients were undergone13NH3PET at Nagoya Radiological Diagnosis Foundation. After we excluded patients whose summed stress score (SSS) <4, we identified 182 eligible patients. Patients were divided into two group according to the median value of CFR levels; low stress MBF group (≤2.56) and high stress MBF group (>2.56). We followed up them up to 4.2 years (median 2.4 years) and collected their data. We evaluated their major adverse cardiac cerebrovascular event. We performed Kaplan-Meyer analysis and multivariable cox regression models. Furthermore, we evaluated the incremental value with C-index, net reclassification improvement (NRI) and integrated discrimination improvement (IDI) when CFR added into a model with established risk factors.
Result
There were intergroup difference in baseline characteristics: age, gender, prior CVD and diabetes. Kaplan-Meyer analysis shows statistically intergroup difference [log rank p=0.013, hazard ratio (HR) 0.413, 95% confidential interval (CI) 0.220–0.775]. Multivariable cox regression model for MACCE shows CFR is an independent risk factor (p=0.004, HR 0.311, 95% CI 0.137–0.684). As regarding model discrimination, all of C-index (0.832 vs 0.796, p=0.15), NRI (0.513, p=0.008) and IDI (0.032, p=0.033) were greatest in a predicting model with established risk factors plus stress MBF.
Conclusion
The low stress MBF group has poor prognosis in MACCE comparing to the high stress MBF group. Stress MBF is an independent risk factor for MACCE. Adding stress MBF on conventional risk factors could more accurately predict MACCE in HD patients, even in patients without MP abnormality.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - T Imaoka
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Inoue
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Oshima
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - R Itou
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - H Ishii
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
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12
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Umemoto N, Imaoka T, Inoue S, Itou R, Oshima S, Sakakibara T, Shimizu K, Ishii H, Murohara T. Diabetes and hemodialysis are important factor for decrease coronary flow reserve even in the patients with normal myocardial perfusion. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.0293] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
In clinical setting, patients with traditional coronary risk factors are at high risk for coronary artery disease (CAD). Such patients who complain chest discomfort are usually performed nuclear myocardial perfusion (MP) test. We sometimes find patients whose PET result shows normal MP and abnormal coronary flow reserve (CFR). However, there are limited data about the predictors for decreased CFR. In the view of describe above, we have investigated the parameters for decreased CFR in the patients without MP abnormality.
Methods and results
From 20th April 2013 to 21st December 2018, we performed 2,930 13N- ammonia PET for suspected CAD. After excluding the follows; 966 patients with repeated test, 54 patients with incomplete data, one patient missed, we investigated 1,909 eligible patients' data. We performed least square to identify the factors decreased CFR. Hemodialysis (HD), age, prior revascularization, diabetes (DM) and body mass index (BMI) were independent risk factor for decreased CFR in all population. On the other hand, HD, age, DM, hypertension and BMI were independent risk factor for decreasing CFR in patients without MP abnormality. According to the result of least square methods, we classified all patients into four groups; without DM/ without HD group, with DM/ without HD group, without DM/ with HD group and with DM/ with HD group. The value of CFR in each group were as follows: without DM/ without HD group (median, 1st quartile-3rd quartile; 2.88, 2.21–3.52), with DM/ without HD group (2.65, 2.00–3.38), without DM/ with HD group (2.29, 1.67–2.95) and with DM/ with HD group (1.97, 1.43–2.68). There were statistically significant intergroup differences. The value of CFR in the patients without MP abnormality were as follows: without DM/ without HD group (3.04, 2.47–3.65), with DM/ without HD group (2.98, 2.40–3.61), without DM/ with HD group (2.52, 2.10–3.08) and with DM/ with HD group (2.38, 1.86–2.97). Even in the patients without MP abnormality, there were also statistically significant intergroup differences.
Conclusion
According to our 13N-ammonia PET data analysis, DM and HD were important and independent factors for decreased CFR. Even in the patients without MP abnormality, DM and HD were important factor for decreased CFR.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - T Imaoka
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Inoue
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - R Itou
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - S Oshima
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - H Ishii
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
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13
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Ito R, Oshima S, Ishii H, Takahashi H, Umemoto N, Sakakibara T, Murohara T. Long term clinical outcome after self-expandable nitinol stent implantation for femoropopliteal occlusive disease in hemodialysis patients. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.2394] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Endovascular therapy (EVT) using self-expandable bare nitinol stent (BNS) has been commonly accepted in patients with symptomatic femoropopliteal (FP) occlusive disease. However, poor clinical outcomes in hemodialysis (HD) patients are major problems. We investigated the impact of HD on clinical outcome after EVT in patients with FP disease.
Methods
A total of 427 consecutive HD patients undergoing successful EVT with BNS for FP disease were enrolled with 157 non-HD patients as a control group. They were followed-up for 5 years. We collected data on target lesion revascularization (TLR) rate, and limb salvage rate as well as survival rate. Propensity-score matching analysis was performed to investigate the true impact of HD on the outcome.
Results
Critical limb ischemia was observed in 44.0% of overall population (43.0% in HD group vs. 46.8% in non-HD group, p=0.42). Rates of diabetes (67.1% vs. 58.1%, p=0.045) and coronary artery disease (73.5% vs. 58.3%, p=0.0008) were higher, while age (70±10 years old vs. 76±10 years old, p<0.0001) and TASC2 C/D lesion (27.9% vs. 44.6%, p=0.0002) were lower in HD group compared to non-HD group. Pre-procedural C-reactive protein level (0.4mg/l vs. 0.3mg/l, p=0.045) was higher and serum albumin level (3.6g/dl vs. 3.8g/dl, p=0.0045) was lower in HD group than those in non-HD group. The freedom rate from TLR at 5 years was significantly lower in HD group than in non-HD group [47.2% vs. 65.2%, hazard ratio (HR) 1.77, 95% confidence interval (CI) 1.23–2.64, p=0.0017]. The limb salvage rate was comparable between the groups (93.3% vs. 97.1%, HR 1.57, 95% CI 0.58–5.47, p=0.41), while the survival rate was significantly lower in HD group compared to non-HD group (60.6% vs. 86.0%, HR 2.53, 95% CI 1.56–4.36, p=0.0002). After propensity-score analysis, 250 patients (125 in each group) were matched without any difference of clinical characteristics in both groups. In the matched cohort, the freedom rate from TLR was still lower in HD group compared to non-HD group (46.7% vs. 66.6%, HR 2.25, 95% CI 1.35–3.87, p=0.0019). The adjusted limb salvage rate was consistently similar between the groups (95.4% vs. 97.3%, HR 1.10, 95% CI 0.20–5.94, p=0.91). Also, the adjusted survival rate was lower in HD group than in non-HD group (47.6% vs. 89.9%, HR 3.60, 95% CI 1.89–7.44, p<0.0001).
Conclusion
The freedom rate from TLR at 5 years after BNS implantation for FP disease were significantly lower in HD group than in non-HD group, though the limb salvage rate was similar between the groups. The survival rate was consistently lower in HD group compared to non-HD group. HD status had a great impact on TLR and mortality after EVT with BNS in patients with FP disease.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- R Ito
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Oshima
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - H Takahashi
- Fujita Health University School of Medicine, Department of Nephrology, Toyoake, Japan
| | - N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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14
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Jakovac I, Horvatić M, Schwier EF, Prokofiev A, Paschen S, Mitamura H, Sakakibara T, Grbić MS. 105Pd NMR and NQR study of the cubic heavy fermion system Ce 3Pd 20Si 6. J Phys Condens Matter 2020; 32:245601. [PMID: 32189642 DOI: 10.1088/1361-648x/ab70c4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report 105Pd nuclear magnetic resonance (NMR) and nuclear quadrupolar resonance (NQR) measurements on a single crystal of Ce3Pd20Si6, where antiferroquadrupolar and antiferromagnetic orders develop at low temperature. From the analysis of NQR and NMR spectra, we have determined the electric field gradient (EFG) tensors and the anisotropic Knight shift (K) components for both inequivalent Pd sites-Pd(32f) and Pd(48h). The observed EFG values are in excellent agreement with our state-of-the-art density functional theory calculations. The principal values of the quadrupolar coupling are [Formula: see text] MHz and [Formula: see text] MHz, for the Pd(32f) and Pd(48h) sites, respectively, which is large compared to the Larmor frequency defined by the gyromagnetic constant [Formula: see text] MHz/T for 105Pd. Therefore, the complete knowledge of K and the EFG tensors is crucial to establish the correspondence between NMR spectra and crystallographic sites, which is needed for a complete analysis of the magnetic structure, static spin susceptibility, and the spin-lattice relaxation rate data and a better understanding of the groundstate of Ce3Pd20Si6.
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Affiliation(s)
- I Jakovac
- Department of Physics, Faculty of Science, University of Zagreb, Bijenička cesta 32, Zagreb HR 10000, Croatia
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15
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Yamabe S, Ito R, Sakakibara T, Yamada A, Ohshima S, Ozaki Y. 1043 Association of left ventricular global longitudinal strain with myocardial perfusion evaluated by 13N-ammonia positron emission tomography in hemodialysis patients with preserved ejection fraction. Eur Heart J Cardiovasc Imaging 2020. [DOI: 10.1093/ehjci/jez319.635] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background
Global longitudinal strain (GLS) is an echocardiographic marker to detect subclinical left ventricular systolic dysfunction prior to the appearance of reduced left ventricular ejection fraction (LVEF). Reduced GLS identified in patients with maintenance hemodialysis (HD) has been reported to be a predictor of their higher mortality and cardiovascular events. On the other hand, pharmacological stress 13N-ammonia positron emission tomography (13N-NH3-PET) has been an established and reliable imaging modality to evaluate myocardial perfusion expressed as coronary flow reserve (CFR) or maximal stress myocardial blood flow (MBF). CFR and MBF are powerful parameters to detect coronary artery disease and to predict cardiovascular events and mortality. However, association between GLS and those myocardial perfusion parameters are not fully understood.
Purpose:The aim of this study was to evaluate the relationship between GLS and the myocardial perfusion parameters of 13N-NH3-PET in HD patients with preserved LVEF.
Methods
We studied 24 HD patients (mean age 67 years, 67% male) who underwent ATP stress 13N-NH3-PET as well as transthoracic echocardiography including 2-dimensional speckle tracking imaging for suspected ischemic heart disease. Exclusion criteria were as follows: LVEF <50%, moderate to severe valvular diseases, and atrial fibrillation. Myocardial perfusion abnormality (MPA) was defined as CFR <2.0 and/or stress MBF <2.0.
Results
Mean GLS in all patients was -16.2 ± 3.6%. The patients were divided into 2 groups based on GLS: patients with reduced GLS (<-16%) (Group A, N = 11) and those with preserved GLS (≧-16%) (Group B, N = 14). There were no significant differences between 2 groups in age, gender, body mass index, left ventricular mass index, and average E/e’. Nevertheless, Group A had significantly lower stress MBF than Group B (1.7 ± 0.41 vs 2.0 ± 0.33, p = 0.031). In addition, Group A showed more frequent MPA compared with Group B (81.8% vs 42.9%, p = 0.043). There was a moderate correlation between GLS and stress MBF (r = 0.62, p = 0.0012), whereas no significant correlation was noted between GLS and CFR (r = 0.079, p = 0.71).
Conclusion
Reduced GLS was significantly associated MPA. MPA may be one of the major contributors to the reduction in GLS in HD patients with preserved LVEF.
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Affiliation(s)
- S Yamabe
- Fujita Health University, Toyoake, Japan
| | - R Ito
- Kyoritsu Hospital, Nagoya, Japan
| | | | - A Yamada
- Fujita Health University, Toyoake, Japan
| | | | - Y Ozaki
- Fujita Health University, Toyoake, Japan
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16
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Nishimoto E, Ito Y, Sakakibara T, Nishikubo T. Early treatment using betaine and methionine for a neonate with MTHFR deficiency. Pediatr Int 2019; 61:1265-1266. [PMID: 31782227 DOI: 10.1111/ped.14018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Revised: 08/09/2019] [Accepted: 09/26/2019] [Indexed: 11/30/2022]
Affiliation(s)
- Eri Nishimoto
- Division of Neonatal Intensive Care, Center for Perinatal Medicine, Nara Medical University Hospital, Nara, Japan
| | - Yoko Ito
- Division of Neonatal Intensive Care, Center for Perinatal Medicine, Nara Medical University Hospital, Nara, Japan
| | | | - Toshiya Nishikubo
- Division of Neonatal Intensive Care, Center for Perinatal Medicine, Nara Medical University Hospital, Nara, Japan
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17
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Umemoto N, Ooshima S, Katou M, Kajiura H, Inoue S, Iio Y, Itou R, Sakakibara T, Ishii H, Shimizu K, Murohara T. P6240The impact of stress myocardial blood flow as a very strong predictor for all-cause mortality, cardiovascular mortality and adverse cardiac and cerebrovascular event in hemodialysis population. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0841] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
In the clinical setting, ischemic heart disease (IHD) is a major problem not only in general patients but also in regular hemodialysis (HD) patients. 13ammonia positron emission tomography (13NH3PET) is an established and excellent diagnostic device for IHD. Although coronary flow reserve is the most important index in IHD diagnosis, there are limited data about stress myocardial blood flow (MBF). We investigated the prognosis predictability of stress MBF in all-cause mortality, cardiovascular (CV) mortality and adverse cardiac and cerebrovascular event (MACCE).
Methods and results
A total 438 of HD patients who undergone 13NH3PET for suspected IHD were enrolled. 29 cases were excluded due to revascularization therapy in 60 days. In total we collected 409 eligible cases. All patients were undergone13NH3PET at Nagoya Radiological Diagnosis Foundation. Patients were divided into two group according to the median value of stress MBF levels; low stress MBF group (<2.12) and high stress MBF group (≥2.12). We followed up them up to 4.2 years (median 2.4 years) and collected their data. We evaluated their all-cause mortality, CV mortality and MACCE. Kaplan-Meyer analysis shows that intergroup difference in all-cause mortality (log rank p=0.001, hazard ratio [HR] 0.411, 95% confident interval [CI] 0.261–0.632), CV mortality (log rank p=0.002, HR 0.324, 95% CI 0.157–0.625) and MACCE (log rank p<0.001, HR 0.465, 95% CI 0.324–0.657). Multiple cox analysis that include established risk factors shows CFR is an independent risk factor for all-cause mortality (HR 0.261, 95% CI 0.154–0.442), CV mortality (HR 0.172, 95% CI 0.079–0.374) and MACCE (HR 0.329, 95% CI 0.213–0.503). As a result of the incremental value with C-index, net reclassification improvement (NRI) and integrated discrimination improvement (IDI) when CFR added into a model with established risk factors, each indicator shows adding stress MBF on established risk factors improve the predictability in all-cause mortality, CV mortality and MACCE (all-cause mortality; NRI 0.642, p<0.001, IDI 0.091, p<0.001, CV mortality NRI 0.809, p<0.001, IDI 0.116, p<0.001, MACCE; NRI 0.646, p<0.001, IDI 0.072, p<0.001).
Conclusion
Considering prognosis of HD population, stress MBF is an important and independent predictor for all-cause mortality, CV mortality and MACCE. As a result of our investigation, stress MBF is one of most strong predictors in HD population.
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Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Ooshima
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - M Katou
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - H Kajiura
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Inoue
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - Y Iio
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - R Itou
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, department of cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - T Murohara
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
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18
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Kumada Y, Ishii H, Oshima T, Sakakibara T, Ito R, Takahashi H, Murohara T. P1959Impact of hemodialysis in patients undergoing bypass surgery for peripheral arterial disease - 10-year follow-up study. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0706] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although lower extremities bypass surgery has been commonly performed as the standard option to treat peripheral artery disease (PAD) even in patients on hemodialysis (HD) as well as general population, poorer prognosis still remains major problems in this specific population. In this 10-year follow-up study, we investigated the impact of HD after surgical revascularization in patients with PAD.
Methods
A total of 660 patients undergoing successfully bypass surgery were enrolled. Patients with acute limb ischemia were excluded. We compared 392 HD patients with 428 limbs and 268 non-HD (NHD) patients with 296 limbs during 10 years follow-up period. Primary endpoint was defined as major adverse cardiovascular events (MACE) including all-cause death, non-fatal myocardial infarction and stroke. Second endpoint was major adverse limb events (MALE) including any revascularization and major amputation. To minimize the differences of clinical characteristics between the two groups, propensity score adjusting with all baseline variables was performed.
Results
Prevalence of diabetes (53.3% vs. 35.2%), critical limb ischemia (77.5% vs. 52.1%) and infra-popliteal artery (48.2% vs. 19.6%) were higher in HD group compared to NHD group (p<0.0001 in all), inversely, age was younger in HD group than in NHD group (67±9 years vs. 71±9 years, p<0.0001). The 30-day mortality rate was comparable (3.1% in HD group vs. 1.5% in NHD group, p=0.19). The 10-year event-free survival rate for MACE was significantly lower in HD group compared to NHD group (45.3% vs. 67.4%, p<0.0001) and for MALE (60.0% vs. 80.0%, p=0.0007), respectively. After propensity score adjustment, the freedom rate from MACE was still lower in HD group compared to NHD group [45.6% vs. 67.6%, hazard ratio (HR) 1.89, 95% confidence interval (CI) 1.33–2.72, p=0.0003], however, the rate from MALE was statistically comparable between the two group (65.7% vs. 76.9%, 1.27, 95% CI 0.87–1.90, p=0.21). Furthermore, although the 10-year limb salvage rate was crudely lower in HD group compared to NHD group (80.6% vs. 91.6%, HR 1.57, 95% CI 1.05–2.40, p=0.0027), it was comparable after propensity score adjustment (89.4% vs. 90.1%, HR 1.09, 95% CI 0.59–1.88, p=0.79). Also, the mortality rate was consistently lower in HD patients (adjusted HR 2.37, 95% CI 1.62–3.50, p<0.0001).
Conclusion
The long-term freedom rate from MACE and mortality was markedly lower in HD patients compared to non-HD patients. However, the rate from MALE, especially limb salvage rate was similar between HD and NHD after adjustment for clinical characteristics. These results suggest that detection at the early stage of PAD may potentially improve the poor outcomes in this high risk population.
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Affiliation(s)
- Y Kumada
- Matsunami General Hospital, Cardiovascular Surgery, Kasamatsu, Japan
| | - H Ishii
- Nagoya University Graduate School of medicine, Cardiology, Nagoya, Japan
| | - T Oshima
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - R Ito
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - H Takahashi
- Fujita Health University, School of Medical Science, Toyoake, Japan
| | - T Murohara
- Nagoya University Graduate School of medicine, Cardiology, Nagoya, Japan
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19
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Ito R, Oshima S, Ishii H, Sakakibara T, Yamabe S, Umemoto N, Murohara T. P1583The association of carotid atherosclerosis, protein-energy wasting and inflammation status with mortality in patients on haemodialysis. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0343] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Carotid atherosclerosis such as increased intima-media thickness (IMT) is associated with poor cardiovascular outcome. On the other hand, protein-energy wasting (PEW) or malnutrition, currently considered to be due to inflammatory process rather than poor nutritional intake, is highly prevalent in in chronic kidney disease (CKD) patients, particularly those on haemodialysis (HD). We investigated the association of carotid atherosclerosis, PEW and inflammation, and their joint role with prediction of mortality in chronic HD patients.
Methods
Carotid ultra-sound was performed in a total of 774 CKD patients stably undergoing HD therapy. Carotid atherosclerosis is defined as IMT>0.8mm as median value with hyperechoic plaque. Geriatric nutritional risk index (GNRI) which calculated from serum albumin levels, body weight and height as a surrogate marker of the PEW, and C-reactive protein (CRP) were measured at the same point. Patients were followed-up for 7 years.
Results
Declined GNRI and elevated CRP levels were independently associated with carotid atherosclerosis [odds ratio (OR) 0.96, 95% confidence interval (CI) 0.93–0.98, p=0.0082 and OR 1.30, 95% CI 1.04–1.64, p=0.019, respectively] accompanied with age (OR 1.03, 95% CI 1.01–1.05, p=0.0024) and hypertension (OR 1.78, 95% CI 1.12–2.91, p=0.013). During follow-up period (median of 67 months), 180 patients (23.3%) died. Carotid atherosclerosis [62.7% vs. 79.3% for 7-year survival rate, hazard ratio (HR) 1.57, 95% CI 1.12–2.16, p=0.0078], GNRI<91.2 as an established cut-off value (58.8% vs. 83.7%, HR 1.87, 95% CI 1.35–2.59, p=0.0002) and CRP>1.1 mg/l as a median value (65.8% vs. 88.6%, HR 2.87, 95% CI 2.00–4.22, p<0.0001) were identified as independent predictors of mortality after adjustment for other confounders. When patients were divided into groups according to number of these three risk factors, 7-year Kaplan-Meier survival rate was 92.7%, 91.1%, 56.8% and 37.2% among groups with no risk factor, any 1 risk factor, any 2 risk factors and all risk factors, respectively (p<0.0001 for trend). After adjustment for other confounders, patients with any 1, any 2 and all risk factors had 2.21-fold (95% CI 1.26–4.14), 5.44-fold (95% CI 3.13–10.1) and 7.19-fold (95% CI 3.67–14.6) higher risk for mortality compared to those without any risk factor, respectively (p<0.0001 for trend).
Conclusions
Presence of carotid atherosclerosis was closely associated with both declined GNRI and elevated CRP levels in CKD patients on HD. Combination of these predictors was also additively associated with an increasing risk of mortality. These results clearly manifested the so-called malnutrition, inflammation and atherosclerosis (MIA) syndrome in this high-risk population.
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Affiliation(s)
- R Ito
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Oshima
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Yamabe
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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20
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Takahashi H, Ishii H, Kumada Y, Oshima T, Sakakibara T, Ito R, Murohara T, Ozaki Y. P1582Prognostic value of C-reactive protein/albumin ratio for cardiovascular morbidity and mortality in end-stage renal disease patients with incident haemodialysis therapy. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0342] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Hypoalbuminemia, a manifestation of protein-energy wasting or malnutrition, is commonly observed in patients with end-stage renal disease (ESRD), and is associated with chronic inflammation and increasing cardiovascular (CV) risk. Recently, C-reactive protein (CRP)/albumin ratio at discharge is reportedly a well-predictor of mortality in severe sepsis or cancer patients.
We investigated prognostic value of the CRP/albumin ratio at just starting haemodialysis (HD) therapy for CV morbidity and mortality in patients with ESRD.
Methods
A total of 1,548 ESRD patients were enrolled and were divided into quartiles according to CRP/albumin levels at initiation of HD; quartile 1 (Q1): <0.22, Q2: 0.23–0.54, Q3: 0.55–1.83 and Q4: >1.84. They were followed up for 10-year after starting HD therapy. Primary endpoint was CV events defined as hospitalization due to CV events such as cardiac disease, stroke and peripheral artery disease and CV death. We also evaluated the incremental value with C-index when CRP alone, albumin alone and the CRP/albumin ratio were added into a model with established risk factors.
Results
During follow-up period (median: 59 months), 512 cases experienced CV events (33.1%) including 165 cases of CV deaths (10.7%). Kaplan-Meier analysis shows that CV event-free survival rates for 10 years were 63.5%, 53.8%, 47.5% and 31.9% in Q1, Q2, Q3 and Q4, and that CV survival rates were 90.4%, 83.9%, 77.2% and 64.6% in Q1, Q2, Q3 and Q4, respectively (p<0.0001 in both). After adjustment for all baseline variables, elevated CRP/albumin ratio was identified as an independent predictor for CV events [hazard ratio (HR) 1.51, 95% confidence interval (CI) 1.11–2.07, p=0.0093 for Q2 vs. Q1, HR 1.79, 95% CI 1.33–2.42, p<0.0001 for Q3 vs. Q1and HR 2.27, 95% CI 1.70–3.07, p<0.0001 for Q4 vs. Q1, respectively]. As to CV mortality, similar results were obtained (HR 1.80, 95% CI 0.98–3.44, p=0.056 for Q2 vs. Q1, HR 2.56, 95% CI 1.45–4.71, p=0.0009 for Q3 vs. Q1 and HR 2.66, 95% CI 1.53–4.86, p=0.0004 for Q4 vs. Q1, respectively). Furthermore, adding the CRP/albumin ratio to a baseline model with established risk factors improved the C-index greater than that of CRP alone or albumin alone, respectively (0.715 from 0.692, p=0.0095 and from 0.683, p=0.0019)
Conclusion
The CRP/albumin ratio, which easily available from daily practice, could strongly stratify the risk of future CV morbidity and mortality in ESRD patients who need HD therapy.
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Affiliation(s)
- H Takahashi
- Fujita Health University School of Medicine, Cardiology, Toyoake, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - Y Kumada
- Matsunami General Hospital, Cardiovascular Surgery, Kasamatsu, Japan
| | - T Oshima
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - R Ito
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - Y Ozaki
- Fujita Health University School of Medicine, Cardiology, Toyoake, Japan
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21
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Sakakibara T, Suwa K, Kaneko Y, Akita K, Sato R, Mogi S, Naruse Y, Ohtani H, Saitoh T, Saotome M, Urushida T, Maekawa Y. P585Intra left ventricular hemodynamics assessed using 4D flow MRI in the patient with left ventricular thrombus. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz747.0194] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Background
Early detection of left ventricular mural thrombus (LVT) in patients with reduced ejection fraction (EF) is crucial in prevention of arterial embolism. 3D-cine phase-contrast magnetic resonance imaging (4D flow MRI) can visualize the intra-LV vortex flow in diastole and quantify the maximum flow velocity (Vmax) at the apex. it remains, however, unknown whether 4D flow MRI is useful for detecting LVT.
Purpose
The purpose of our study is to examine the intra-LV vortex formation and flow velocity in patients with severe LV dysfunction using 4D Flow MRI, and to compare differences in intra-LV flow dynamics between patients with and without LVT. We also examined the diagnostic accuracy to detect LVT by 4D flow MRI.
Methods
Twenty-nine patients with impaired LV function (LVEF 25.8±7.4%, 62.5±12.3 years old, 24 males, 11 with ischemic cardiomyopathy, 9 with LVT) underwent 4D flow MRI from January 2012 to August 2018 in our institution. Intra-LV vortex size was evaluated as vortex/LV area ratio by streamline imaging (Figure 1). The diagnostic accuracy to predict LVT by vortex size and Vmax at the apex was determined by ROC analysis.
Results
The vortex was smaller (vortex/LV area ratio; 30.6±7.0% vs. 45.1±9.0%, p<0.05) and Vmax at the apex was lower (0.20±0.04 m/s vs. 0.28±0.09 m/s, p=0.013) in patients with LVT compared to those without LVT. The AUC was 0.789 for Vmax (cut-off value=0.226 m/s, sensitivity=0.889, specificity=0.650) and was 0.900 for vortex/LV area ratio (cut-off value=34.7%, sensitivity=0.889, specificity=0.850).
Figure 1
Conclusion
The smaller size of intra-LV vortex and the lower flow velocity at the LV apex may have association with LVT formation in patients with reduced EF. 4D flow MRI might be useful to predict LVT formation. Large scale longitudinal study is warranted to evaluate the incidence of LVT in the patients with lower flow velocity.
Acknowledgement/Funding
None
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Affiliation(s)
- T Sakakibara
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - K Suwa
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - Y Kaneko
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - K Akita
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - R Sato
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - S Mogi
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - Y Naruse
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - H Ohtani
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - T Saitoh
- Hamamatsu University School of Medicine, Emergency Medicine, Hamamatsu, Japan
| | - M Saotome
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - T Urushida
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
| | - Y Maekawa
- Hamamatsu University School of Medicine, Cardiology, Hamamatsu, Japan
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22
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Umemoto N, Ooshima S, Ooshima S, Itou R, Itou R, Iio Y, Iio Y, Kajiura H, Kajiura H, Shimizu K, Shimizu K, Sakakibara T, Sakakibara T, Ishii H, Ishii H, Murohara T, Murohara T. P6243Impact of coronary flow reserve as an important predictor for major adverse cardiac and cerebrovascular event in hemodialysis patients even in patients without myocardial perfusion abnormality. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0844] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
In the clinical setting, ischemic heart disease (IHD) is a major problem not only in general patients but also in regular hemodialysis (HD) patients. 13N-ammonia positron emission tomography (13NH3PET) is an established and excellent diagnostic test for IHD. We have reported about the predictability of coronary flow reserve (CFR) in poor prognosis in HD population. Some prior studies show that low CFR predicts poor prognosis for not only cardiovascular event but also all-cause mortality. Although it is well-known that CFR is an important predictor, there are limited data about CFR of patients without myocardial perfusion (MP) abnormality. We investigated the prognostic predictability of adverse cardiac and cerebrovascular event (MACCE) in HD patients without MP abnormality.
Methods
A total 438 of HD patients who underwent 13NH3PET for suspected IHD were enrolled. All patients were underwent 13NH3PET at our facility. After we excluded patients whose summed stress score (SSS) >3, we identified 182 eligible patients. Patients were divided into two group according to the median value of CFR; low CFR group (≤2.405) and high CFR group (>2.405). We followed up them up to 4.2 years (median 2.4 years) and collected their data. We evaluated their major adverse cardiac cerebrovascular event. We performed Kaplan-Meyer analysis and multivariable cox regression models. Furthermore, we evaluated the incremental value with C-index, net reclassification improvement (NRI) and integrated discrimination improvement (IDI) when CFR added into a model with established risk factors.
Results
There were intergroup difference in baseline characteristics: age, gender, prior CVD and diabetes. Kaplan-Meyer analysis shows statistically intergroup difference [log rank p=0.04, hazard ratio (HR) 0.54, 95% confidential interval (CI) 0.30–0.97]. Multivariable cox regression model for MACCE shows CFR is an independent risk factor (p=0.04, HR 0.54, 95% CI 0.30–0.97). As regarding model discrimination, all of C-index (0.82 vs 0.80, p=0.23), NRI (0.51, p<0.01) and IDI (0.03, p=0.03) were greatest in a predicting model with established risk factors plus CFR.
Conclusions
The low CFR group had poor prognosis in MACCE comparing to the high CFR group. CFR would be an independent risk factor for MACCE. Adding CFR on conventional risk factors could more accurately predict MACCE in HD patients, even in patients without MP abnormality.
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Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - S Ooshima
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Ooshima
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - R Itou
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - R Itou
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - Y Iio
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - Y Iio
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - H Kajiura
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - H Kajiura
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Ichinomiya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
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23
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Iwama K, Mizuguchi T, Takeshita E, Nakagawa E, Okazaki T, Nomura Y, Iijima Y, Kajiura I, Sugai K, Saito T, Sasaki M, Yuge K, Saikusa T, Okamoto N, Takahashi S, Amamoto M, Tomita I, Kumada S, Anzai Y, Hoshino K, Fattal-Valevski A, Shiroma N, Ohfu M, Moroto M, Tanda K, Nakagawa T, Sakakibara T, Nabatame S, Matsuo M, Yamamoto A, Yukishita S, Inoue K, Waga C, Nakamura Y, Watanabe S, Ohba C, Sengoku T, Fujita A, Mitsuhashi S, Miyatake S, Takata A, Miyake N, Ogata K, Ito S, Saitsu H, Matsuishi T, Goto YI, Matsumoto N. Genetic landscape of Rett syndrome-like phenotypes revealed by whole exome sequencing. J Med Genet 2019; 56:396-407. [DOI: 10.1136/jmedgenet-2018-105775] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 01/17/2019] [Accepted: 01/21/2019] [Indexed: 11/03/2022]
Abstract
BackgroundRett syndrome (RTT) is a characteristic neurological disease presenting with regressive loss of neurodevelopmental milestones. Typical RTT is generally caused by abnormality of methyl-CpG binding protein 2 (MECP2). Our objective to investigate the genetic landscape of MECP2-negative typical/atypical RTT and RTT-like phenotypes using whole exome sequencing (WES).MethodsWe performed WES on 77 MECP2-negative patients either with typical RTT (n=11), atypical RTT (n=22) or RTT-like phenotypes (n=44) incompatible with the RTT criteria.ResultsPathogenic or likely pathogenic single-nucleotide variants in 28 known genes were found in 39 of 77 (50.6%) patients. WES-based CNV analysis revealed pathogenic deletions involving six known genes (including MECP2) in 8 of 77 (10.4%) patients. Overall, diagnostic yield was 47 of 77 (61.0 %). Furthermore, strong candidate variants were found in four novel genes: a de novo variant in each of ATPase H+ transporting V0 subunit A1 (ATP6V0A1), ubiquitin-specific peptidase 8 (USP8) and microtubule-associated serine/threonine kinase 3 (MAST3), as well as biallelic variants in nuclear receptor corepressor 2 (NCOR2).ConclusionsOur study provides a new landscape including additional genetic variants contributing to RTT-like phenotypes, highlighting the importance of comprehensive genetic analysis.
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Liu J, Kittaka S, Johnson RD, Lancaster T, Singleton J, Sakakibara T, Kohama Y, van Tol J, Ardavan A, Williams BH, Blundell SJ, Manson ZE, Manson JL, Goddard PA. Unconventional Field-Induced Spin Gap in an S=1/2 Chiral Staggered Chain. Phys Rev Lett 2019; 122:057207. [PMID: 30822013 DOI: 10.1103/physrevlett.122.057207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Indexed: 06/09/2023]
Abstract
We investigate the low-temperature magnetic properties of the molecule-based chiral spin chain [Cu(pym)(H_{2}O)_{4}]SiF_{6}·H_{2}O (pym=pyrimidine). Electron-spin resonance, magnetometry and heat capacity measurements reveal the presence of staggered g tensors, a rich low-temperature excitation spectrum, a staggered susceptibility, and a spin gap that opens on the application of a magnetic field. These phenomena are reminiscent of those previously observed in nonchiral staggered chains, which are explicable within the sine-Gordon quantum-field theory. In the present case, however, although the sine-Gordon model accounts well for the form of the temperature dependence of the heat capacity, the size of the gap and its measured linear field dependence do not fit with the sine-Gordon theory as it stands. We propose that the differences arise due to additional terms in the Hamiltonian resulting from the chiral structure of [Cu(pym)(H_{2}O)_{4}]SiF_{6}·H_{2}O, particularly a uniform Dzyaloshinskii-Moriya coupling and a fourfold periodic staggered field.
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Affiliation(s)
- J Liu
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S Kittaka
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R D Johnson
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - T Lancaster
- Centre for Materials Physics, Durham University, South Road, Durham DH1 3LE, United Kingdom
| | - J Singleton
- National High Magnetic Field Laboratory, Los Alamos National Laboratory, MS-E536, Los Alamos, New Mexico 87545, USA
| | - T Sakakibara
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - Y Kohama
- Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - J van Tol
- National High Magnetic Field Laboratory, Florida State University, Tallahassee, Florida 32310, USA
| | - A Ardavan
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - B H Williams
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - S J Blundell
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Z E Manson
- Department of Chemistry and Biochemistry, Eastern Washington University, Cheney, Washington 99004, USA
| | - J L Manson
- Department of Chemistry and Biochemistry, Eastern Washington University, Cheney, Washington 99004, USA
| | - P A Goddard
- Department of Physics, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, United Kingdom
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Ito R, Oshima S, Ishii H, Sakakibara T, Yamabe S, Umemoto N, Murohara T. P6376Drug-coated balloon versus drug-eluting stent after rotational atherectomy for calcified coronary lesions. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6376] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- R Ito
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Oshima
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Yamabe
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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Umemoto N, Shibata N, Itou R, Sakakibara T, Kamoi D, Aoyama T, Asai T, Takahashi H, Shimizu K, Ishii H, Murohara T. P6596Paroxysmal/persistent atrial fibrillation and/or atrial flutter is an independent predictor for all-cause mortality in hemodialysis patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p6596] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - N Shibata
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - R Itou
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - D Kamoi
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - T Aoyama
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - T Asai
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - H Takahashi
- Fujita Health University School of Medicine, Department of Nephrology, nagoya, Japan
| | - K Shimizu
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - H Ishii
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
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27
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Kumada Y, Ishii H, Ohshima S, Sakakibara T, Ito R, Takahashi H, Murohara T. P5379Predictive value of omega-3 polyunsaturated fatty acids (PUFAs) for cardiovascular- and all-cause mortality in chronic haemodialysis patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5379] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- Y Kumada
- Matsunami General Hospital, Cardiovascular Surgery, Kasamatsu, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - S Ohshima
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - R Ito
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - H Takahashi
- Fujita Health University, School of Medical Science, Toyoake, Japan
| | - T Murohara
- Fujita Health University, School of Medical Science, Toyoake, Japan
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28
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Umemoto N, Oshima S, Shibata N, Sakakibara T, Ishii H, Murohara T. P3715Impact of stress myocardial blood flow as an important prognostic predictor for cardiovascular mortality in hemodialysis patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3715] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - S Oshima
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - N Shibata
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Aichi, Japan
| | - T Sakakibara
- Kyoritsu Hospital, Department of Caardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Hospital, Department of Cardiology, Nagoya, Japan
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Umemoto N, Oshima S, Sakakibara T, Ishii H, Shibata N, Shimizu K, Murohara T, Shibata N. P3516Impact of stress myocardial blood flow as an important prognostic predictor for all-cause mortality in hemodialysis patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.p3516] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- N Umemoto
- Ichinomiya municipal hospital, department of cardiology, Ichinomiya, Aichi, Japan
| | - S Oshima
- Kyoritsu Hospital, department of caardiology, Nagoya, Japan
| | - T Sakakibara
- Kyoritsu Hospital, department of caardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
| | - N Shibata
- Ichinomiya municipal hospital, department of cardiology, Ichinomiya, Aichi, Japan
| | - K Shimizu
- Ichinomiya municipal hospital, department of cardiology, Ichinomiya, Aichi, Japan
| | - T Murohara
- Nagoya University Hospital, department of cardiology, Nagoya, Japan
| | - N Shibata
- Ichinomiya municipal hospital, department of cardiology, Ichinomiya, Aichi, Japan
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30
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Ito R, Oshima S, Ishii H, Sakakibara T, Yamabe S, Umemoto N, Murohara T. 4063Long-term clinical outcomes after lower limb revascularization in dialysis patients with peripheral artery disease. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy563.4063] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- R Ito
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Oshima
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - S Yamabe
- Nagoya Kyoritsu Hospital, Department of Cardiology, Nagoya, Japan
| | - N Umemoto
- Ichinomiya Municipal Hospital, Department of Cardiology, Ichinomiya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Department of Cardiology, Nagoya, Japan
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31
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Takahashi H, Ishii H, Kumada Y, Ohshima S, Sakakibara T, Ito R, Murohara T, Yuzawa Y. P5094Combined predictability of cardiac valvular calcification, protein-energy wasting and inflammation status for cardiovascular mortality in incident haemodialysis patients. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy566.p5094] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- H Takahashi
- Fujita Health University School of Medical Science, Toyoake, Japan
| | - H Ishii
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - Y Kumada
- Matsunami General Hospital, Cardiovascular Surgery, Kasamatsu, Japan
| | - S Ohshima
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Sakakibara
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - R Ito
- Nagoya Kyoritsu Hospital, Cardiology, Nagoya, Japan
| | - T Murohara
- Nagoya University Graduate School of Medicine, Cardiology, Nagoya, Japan
| | - Y Yuzawa
- Fujita Health University School of Medicine, Nephrology, Toyoake, Japan
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32
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Tarasov OB, Ahn DS, Bazin D, Fukuda N, Gade A, Hausmann M, Inabe N, Ishikawa S, Iwasa N, Kawata K, Komatsubara T, Kubo T, Kusaka K, Morrissey DJ, Ohtake M, Otsu H, Portillo M, Sakakibara T, Sakurai H, Sato H, Sherrill BM, Shimizu Y, Stolz A, Sumikama T, Suzuki H, Takeda H, Thoennessen M, Ueno H, Yanagisawa Y, Yoshida K. Discovery of ^{60}Ca and Implications For the Stability of ^{70}Ca. Phys Rev Lett 2018; 121:022501. [PMID: 30085743 DOI: 10.1103/physrevlett.121.022501] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/11/2018] [Indexed: 06/08/2023]
Abstract
The discovery of the important neutron-rich nucleus _{20}^{60}Ca_{40} and seven others near the limits of nuclear stability is reported from the fragmentation of a 345 MeV/u ^{70}Zn projectile beam on ^{9}Be targets at the radioactive ion-beam factory of the RIKEN Nishina Center. The produced fragments were analyzed and unambiguously identified using the BigRIPS two-stage in-flight separator. The eight new neutron-rich nuclei discovered, ^{47}P, ^{49}S, ^{52}Cl, ^{54}Ar, ^{57}K, ^{59,60}Ca, and ^{62}Sc, are the most neutron-rich isotopes of the respective elements. In addition, one event consistent with ^{59}K was registered. The results are compared with the drip lines predicted by a variety of mass models and it is found that the models in best agreement with the observed limits of existence in the explored region tend to predict the even-mass Ca isotopes to be bound out to at least ^{70}Ca.
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Affiliation(s)
- O B Tarasov
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Flerov Laboratory of Nuclear Reactions, JINR, 141980 Dubna, Moscow Region, Russian Federation
| | - D S Ahn
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D Bazin
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Fukuda
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Gade
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Hausmann
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - N Inabe
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - S Ishikawa
- Department of Physics, Tohoku University, 6-3 Aramaki-aza-aoba, Aoba, Sendai 980-8578, Japan
| | - N Iwasa
- Department of Physics, Tohoku University, 6-3 Aramaki-aza-aoba, Aoba, Sendai 980-8578, Japan
| | - K Kawata
- Center for Nuclear Study, University of Tokyo, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Komatsubara
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - T Kubo
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - K Kusaka
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - D J Morrissey
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Chemistry, Michigan State University, East Lansing, Michigan 48824, USA
| | - M Ohtake
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Otsu
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Portillo
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Sakakibara
- Department of Physics, Tohoku University, 6-3 Aramaki-aza-aoba, Aoba, Sendai 980-8578, Japan
| | - H Sakurai
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Sato
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - B M Sherrill
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - Y Shimizu
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - A Stolz
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
| | - T Sumikama
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Suzuki
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - H Takeda
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - M Thoennessen
- National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - H Ueno
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Y Yanagisawa
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - K Yoshida
- RIKEN Nishina Center, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Ng YS, Lax NZ, Maddison P, Alston CL, Blakely EL, Hepplewhite PD, Riordan G, Meldau S, Chinnery PF, Pierre G, Chronopoulou E, Du A, Hughes I, Morris AA, Kamakari S, Chrousos G, Rodenburg RJ, Saris CGJ, Feeney C, Hardy SA, Sakakibara T, Sudo A, Okazaki Y, Murayama K, Mundy H, Hanna MG, Ohtake A, Schaefer AM, Champion MP, Turnbull DM, Taylor RW, Pitceathly RDS, McFarland R, Gorman GS. MT-ND5 Mutation Exhibits Highly Variable Neurological Manifestations at Low Mutant Load. EBioMedicine 2018; 30:86-93. [PMID: 29506874 PMCID: PMC5952215 DOI: 10.1016/j.ebiom.2018.02.010] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2018] [Revised: 02/03/2018] [Accepted: 02/12/2018] [Indexed: 01/06/2023] Open
Abstract
Mutations in the m.13094T>C MT-ND5 gene have been previously described in three cases of Leigh Syndrome (LS). In this retrospective, international cohort study we identified 20 clinically affected individuals (13 families) and four asymptomatic carriers. Ten patients were deceased at the time of analysis (median age of death was 10years (range: 5·4months-37years, IQR=17·9years). Nine patients manifested with LS, one with mitochondrial encephalomyopathy, lactic acidosis and stroke-like episodes (MELAS), and one with Leber hereditary optic neuropathy. The remaining nine patients presented with either overlapping syndromes or isolated neurological symptoms. Mitochondrial respiratory chain activity analysis was normal in five out of ten muscle biopsies. We confirmed maternal inheritance in six families, and demonstrated marked variability in tissue segregation, and phenotypic expression at relatively low blood mutant loads. Neuropathological studies of two patients manifesting with LS/MELAS showed prominent capillary proliferation, microvacuolation and severe neuronal cell loss in the brainstem and cerebellum, with conspicuous absence of basal ganglia involvement. These findings suggest that whole mtDNA genome sequencing should be considered in patients with suspected mitochondrial disease presenting with complex neurological manifestations, which would identify over 300 known pathogenic variants including the m.13094T>C.
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Affiliation(s)
- Yi Shiau Ng
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Nichola Z Lax
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Paul Maddison
- Department of Neurology, Queen's Medical Centre, Nottingham, UK
| | - Charlotte L Alston
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Emma L Blakely
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Philippa D Hepplewhite
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Gillian Riordan
- Paediatric Neurology Department, Red Cross War Memorial Children's Hospital, Cape Town, South Africa
| | - Surita Meldau
- Division of Chemical Pathology, Faculty of Health Sciences, University of Cape Town, South Africa; National Health Laboratory Service, Cape Town, South Africa
| | - Patrick F Chinnery
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK; Medical Research Council Mitochondrial Biology Unit, Cambridge Biomedical Campus, Cambridge, UK
| | - Germaine Pierre
- Department of Inherited Metabolic Disease, Division of Women's and Children's Services, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Efstathia Chronopoulou
- Department of Inherited Metabolic Disease, Division of Women's and Children's Services, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Ailian Du
- Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Imelda Hughes
- Royal Manchester Children's Hospital, Central Manchester University Hospitals NHS Foundation Trust, UK
| | - Andrew A Morris
- Institute of Human Development, University of Manchester, Manchester M13 9WL, UK; Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, UK
| | - Smaragda Kamakari
- Ophthalmic Genetics Unit, OMMA, Institute of Ophthalmology, Athens, Greece
| | - Georgia Chrousos
- Pediatric Ophthalmology Department, MITERA Children's Hospital, Athens, Greece
| | - Richard J Rodenburg
- Radboud Center for Mitochondrial Medicine, Department of Pediatrics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Christiaan G J Saris
- Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Catherine Feeney
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Steven A Hardy
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Takafumi Sakakibara
- Department of Pediatrics, Nara Medical University Hospital, Nara 634-8522, Japan
| | - Akira Sudo
- Department of Pediatrics, Sapporo City General Hospital, Sapporo 060-8604, Japan
| | - Yasushi Okazaki
- Diagnostics and Therapeutics of Intractable Diseases, Intractable Disease Research Center, Graduate School of Medicine, Juntendo University, Tokyo 113-8421, Japan
| | - Kei Murayama
- Department of Metabolism, Chiba Children's Hospital, Chiba 266-0007, Japan
| | - Helen Mundy
- Evelina London Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Michael G Hanna
- MRC Centre for Neuromuscular Diseases, UCL Institute of Neurology and National Hospital for Neurology and Neurosurgery, London, UK
| | - Akira Ohtake
- Department of Pediatrics, Faculty of Medicine, Saitama Medical University, Saitama 350-0495, Japan
| | - Andrew M Schaefer
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Mike P Champion
- Evelina London Children's Hospital, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Doug M Turnbull
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Robert D S Pitceathly
- MRC Centre for Neuromuscular Diseases, UCL Institute of Neurology and National Hospital for Neurology and Neurosurgery, London, UK
| | - Robert McFarland
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK
| | - Gráinne S Gorman
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle upon Tyne, UK.
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Takahashi H, Ishii J, Ishii H, Aoyama T, Kamoi D, Sakakibara T, Umemoto N, Ozaki Y, Murohara T. P6329Combined predictability of valvular calcification, B-type natriuretic peptide and cardiac troponin T for cardiovascular mortality in chronic hemodialysis patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx493.p6329] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Umemoto N, Ishii H, Kamoi D, Sakakibara T, Aoyama T, Kitahara Y, Takahashi H, Murohara T. P527Impact of drug-coated balloon in hemodialysis patients with in-stent-restenosis lesion. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p527] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Takahashi H, Ishii H, Aoyama T, Kamoi D, Umemoto N, Sakakibara T, Kumada Y, Murohara T. P1090The association of cardiac valvular calcification, protein-energy wasting and inflammation status with cardiovascular- and all-cause mortality in incident haemodialysis patients. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1090] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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37
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Kumada Y, Ishii H, Aoyama T, Kamoi D, Umemoto N, Sakakibara T, Takahashi H, Murohara T. P1766The association of protein-energy wasting and inflammation with mortality after coronary revascularization in patients on haemodailysis. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1766] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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38
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Furukawa M, Sakakibara T, Itoh K, Kawamura K, Matsuura M, Kojima H. Suggestion of the updated IVIS cut-off values for identifying non-ocular irritants in the bovine corneal opacity and permeability (BCOP) assay. Toxicol In Vitro 2017; 45:19-24. [PMID: 28765095 DOI: 10.1016/j.tiv.2017.07.026] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 06/09/2017] [Accepted: 07/27/2017] [Indexed: 10/19/2022]
Abstract
The bovine corneal opacity and permeability (BCOP) assay is an alternative to the Draize test in rabbits. Although it can be used to evaluate ocular non-irritants and severe irritants, it is not used for the assessment of mild-irritating substances. In this assay, a chemical with an in vitro irritancy score (IVIS)≤3 is defined as a "non-irritant" while one with an IVIS>55 is defined as a "corrosive" or "severe irritant." We attempted to evaluate mild eye irritants by assessing the recovery of corneal lesions histopathologically. Our results indicated that chemicals with IVIS≤6 may be defined as "non-irritants," because the rapid recovery of lesions limited to the squamous layer was predicted by the histopathology. In cases where lesions extended to the wing and basal cell layers, when some intact basal cells remained, the lesions were also predicted to be reversible. Thus, chemicals which induce lesions in which basal cells remain intact can be considered to be mild irritants.
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Affiliation(s)
- M Furukawa
- Safety Research Institute for Chemical Compounds Co., Ltd., 363-24 Shin-ei, Kiyotaa-ku, Sapporo, Hokkaido 004-0839, Japan.
| | - T Sakakibara
- Safety Research Institute for Chemical Compounds Co., Ltd., 363-24 Shin-ei, Kiyotaa-ku, Sapporo, Hokkaido 004-0839, Japan
| | - K Itoh
- Safety Research Institute for Chemical Compounds Co., Ltd., 363-24 Shin-ei, Kiyotaa-ku, Sapporo, Hokkaido 004-0839, Japan
| | - K Kawamura
- Safety Research Institute for Chemical Compounds Co., Ltd., 363-24 Shin-ei, Kiyotaa-ku, Sapporo, Hokkaido 004-0839, Japan
| | - M Matsuura
- Safety Research Institute for Chemical Compounds Co., Ltd., 363-24 Shin-ei, Kiyotaa-ku, Sapporo, Hokkaido 004-0839, Japan
| | - H Kojima
- National Institute of Health Science, 1-18-1 Kamiyoga, Setagaya, Tokyo 158-8501, Japan
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39
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Akiyama M, Akiyama T, Kanamaru K, Kuribayashi M, Tada H, Shiokawa T, Toda S, Imai K, Kobayashi Y, Tohyama J, Sakakibara T, Yoshinaga H, Kobayashi K. Determination of CSF 5-methyltetrahydrofolate in children and its application for defects of folate transport and metabolism. Clin Chim Acta 2016; 460:120-5. [DOI: 10.1016/j.cca.2016.06.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Revised: 03/16/2016] [Accepted: 06/24/2016] [Indexed: 12/09/2022]
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40
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Nishikura N, Takano T, Ryujin F, Yoshioka S, Maruo Y, Takeuchi Y, Tamura K, Sakakibara T, Ito M. Remitted epilepsy with dysembryoplastic neuroepithelial tumor involving the thalamus. Pediatr Int 2016; 58:496-500. [PMID: 27163491 DOI: 10.1111/ped.12911] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Revised: 09/11/2015] [Accepted: 09/28/2015] [Indexed: 11/29/2022]
Abstract
Dysembryoplastic neuroepithelial tumors (DNT) are benign hamartomatous tumors characterized by intractable epilepsy and common localization in the supratentorial cortex, but thalamic involvement in DNT is extremely rare. A 2-year 4-month-old boy presented with intractable epilepsy due to a tumorous lesion in the frontal lobe expanding to the thalamus. Under chronic intracranial electrocorticography guidance, partial lesionectomy with adjacent cortical resection was performed, and the lesion was pathologically diagnosed as DNT, complex form. Subsequently, the seizures completely disappeared without any neurological deficits despite the presence of full residual thalamic lesions. The epileptogenicity of DNT is closely associated with various clinicopathological factors, and the thalamic contribution to the seizure activity remains unclear. Due to the essential epileptogenic characteristics of DNT, the residual thalamic lesions and associated clinical features should be strictly observed in the future in the present case.
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Affiliation(s)
- Noriko Nishikura
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan.,Department of Developmental and Behavioral Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Tomoyuki Takano
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Fukiko Ryujin
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Seiichiro Yoshioka
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Yoshihiro Maruo
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Yoshihiro Takeuchi
- Department of Pediatrics, Shiga University of Medical Science, Otsu, Japan.,Department of Developmental and Behavioral Pediatrics, Shiga University of Medical Science, Otsu, Japan
| | - Kentaro Tamura
- Department of Neurosurgery, Nara Medical University, Kashihara, Japan
| | | | - Masayuki Ito
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Kodaira, Japan
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41
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Takatsu H, Onoda S, Kittaka S, Kasahara A, Kono Y, Sakakibara T, Kato Y, Fåk B, Ollivier J, Lynn JW, Taniguchi T, Wakita M, Kadowaki H. Quadrupole Order in the Frustrated Pyrochlore Tb_{2+x}Ti_{2-x}O_{7+y}. Phys Rev Lett 2016; 116:217201. [PMID: 27284670 DOI: 10.1103/physrevlett.116.217201] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Indexed: 06/06/2023]
Abstract
A hidden order that emerges in the frustrated pyrochlore Tb_{2+x}Ti_{2-x}O_{7+y} with T_{c}=0.53 K is studied using specific heat, magnetization, and neutron scattering experiments on a high-quality single crystal. Semiquantitative analyses based on a pseudospin-1/2 Hamiltonian for ionic non-Kramers magnetic doublets demonstrate that it is an ordered state of electric quadrupole moments. The elusive spin liquid state of the nominal Tb_{2}Ti_{2}O_{7} is most likely a U(1) quantum spin-liquid state.
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Affiliation(s)
- H Takatsu
- Department of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan
- Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510, Japan
| | - S Onoda
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
- Condensed Matter Theory Laboratory, RIKEN, Wako, Saitama 351-0198, Japan
| | - S Kittaka
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - A Kasahara
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - Y Kono
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - T Sakakibara
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - Y Kato
- RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
- Department of Applied Physics, University of Tokyo, Bunkyo, Tokyo 113-8656, Japan
| | - B Fåk
- Institute Laue Langevin, BP 156, F-38042 Grenoble, France
| | - J Ollivier
- Institute Laue Langevin, BP 156, F-38042 Grenoble, France
| | - J W Lynn
- NCNR, National Institute of Standards and Technology, Gaithersburg, Maryland 20899-6102, USA
| | - T Taniguchi
- Department of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan
| | - M Wakita
- Department of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan
| | - H Kadowaki
- Department of Physics, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan
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42
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Kono Y, Sakakibara T, Aoyama CP, Hotta C, Turnbull MM, Landee CP, Takano Y. Field-induced quantum criticality and universal temperature dependence of the magnetization of a spin-1/2 heisenberg chain. Phys Rev Lett 2015; 114:037202. [PMID: 25659018 DOI: 10.1103/physrevlett.114.037202] [Citation(s) in RCA: 8] [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: 07/02/2014] [Indexed: 06/04/2023]
Abstract
High-precision dc magnetization measurements have been made on Cu(C4H4N2) (NO3)2 in magnetic fields up to 14.7 T, slightly above the saturation field Hs=13.97 T, in the temperature range from 0.08 to 15 K. The magnetization curve and differential susceptibility at the lowest temperature show excellent agreement with exact theoretical results for the spin-1/2 Heisenberg antiferromagnet in one dimension. A broad peak is observed in magnetization measured as a function of temperature, signaling a crossover to a low-temperature Tomonaga-Luttinger-liquid regime. With an increasing field, the peak moves gradually to lower temperatures, compressing the regime, and, at Hs, the magnetization exhibits a strong upturn. This quantum critical behavior of the magnetization and that of the specific heat withstand quantitative tests against theory, demonstrating that the material is a practically perfect one-dimensional spin-1/2 Heisenberg antiferromagnet.
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Affiliation(s)
- Y Kono
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - T Sakakibara
- Institute for Solid State Physics, University of Tokyo, Kashiwa 277-8581, Japan
| | - C P Aoyama
- Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA
| | - C Hotta
- Department of Basic Science, University of Tokyo, 3-8-1 Komaba, Meguro, Tokyo 153-8902, Japan
| | - M M Turnbull
- Carlson School of Chemistry and Department of Physics, Clark University, Worcester, Massachusetts 01610-1477, USA
| | - C P Landee
- Carlson School of Chemistry and Department of Physics, Clark University, Worcester, Massachusetts 01610-1477, USA
| | - Y Takano
- Department of Physics, University of Florida, Gainesville, Florida 32611-8440, USA
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43
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Mitamura H, Watanuki R, Kaneko K, Onozaki N, Amou Y, Kittaka S, Kobayashi R, Shimura Y, Yamamoto I, Suzuki K, Chi S, Sakakibara T. Spin-chirality-driven ferroelectricity on a perfect triangular lattice antiferromagnet. Phys Rev Lett 2014; 113:147202. [PMID: 25325654 DOI: 10.1103/physrevlett.113.147202] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Indexed: 06/04/2023]
Abstract
Magnetic field (B) variation of the electrical polarization P(c) (∥c) of the perfect triangular lattice antiferromagnet RbFe(MoO(4))(2) is examined up to the saturation point of the magnetization for B⊥c. P(c) is observed only in phases for which chirality is predicted in the in-plane magnetic structures. No strong anomaly is observed in P(c) at the field at which the spin modulation along the c axis, and hence the spin helicity, exhibits a discontinuity to the commensurate state. These results indicate that the ferroelectricity in this compound originates predominantly from the spin chirality, the explanation of which would require a new mechanism for magnetoferroelectricity. The obtained field-temperature phase diagram of ferroelectricity agree well with those theoretically predicted for the spin chirality of a Heisenberg spin triangular lattice antiferromagnet.
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Affiliation(s)
- H Mitamura
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Watanuki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - K Kaneko
- Quantum Beam Science Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - N Onozaki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - Y Amou
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - S Kittaka
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - R Kobayashi
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan and Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Y Shimura
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
| | - I Yamamoto
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - K Suzuki
- Faculty of Engineering, Yokohama National University, Yokohama 240-8501, Japan
| | - S Chi
- Quantum Condensed Matter Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - T Sakakibara
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba 277-8581, Japan
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Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Kumada Y, Murohara T. Association of geriatric nutritional risk index and C-reactive protein with cardiovascular morbidity in end-stage renal disease patients who just began hemodialysis therapy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.4357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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45
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Kamoi D, Ishii H, Kawamura Y, Sakakibara T, Aoyama T. First-generation vs. second-generation drug-eluting stent to coronary intervention in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.850] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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46
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Takahashi H, Ishii H, Kamoi D, Aoyama T, Kawamura Y, Sakakibara T, Kumada Y, Ishii J, Murohara T. Multiple biomarkers improve the prediction of cardiovascular mortality in patients on chronic hemodialysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p5155] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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47
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Ishii H, Aoyama T, Kumada Y, Kamoi D, Sakakibara T, Kawamura Y, Suzuki S, Tanaka M, Yoshikawa D, Murohara T. Treatment with cilostazol prevents incidence of stroke in haemodialysis patients with peripheral artery disease: propensity score-adjusted analysis. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht307.p388] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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48
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Kumada Y, Nogaki H, Takahashi H, Ishii H, Aoyama T, Kamoi D, Kawamura Y, Sakakibara T, Murohara T. Long-term clinical outcome after surgical or percutaneous coronary revascularization in hemodialysis patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht308.p2151] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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49
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Yamaguchi H, Iwase K, Ono T, Shimokawa T, Nakano H, Shimura Y, Kase N, Kittaka S, Sakakibara T, Kawakami T, Hosokoshi Y. Unconventional magnetic and thermodynamic properties of S=1/2 spin ladder with ferromagnetic legs. Phys Rev Lett 2013; 110:157205. [PMID: 25167306 DOI: 10.1103/physrevlett.110.157205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Revised: 01/16/2013] [Indexed: 06/03/2023]
Abstract
We have succeeded in synthesizing single crystals of a new organic radical 3-Cl-4-F-V [3-(3-chloro-4-fluorophenyl)-1,5-diphenylverdazyl]. Through the ab initio molecular orbital calculation and the analysis of the magnetic properties, this compound was confirmed to be the first experimental realization of an S=1/2 spin-ladder system with ferromagnetic leg interactions. The field-temperature phase diagram indicated that the ground state is situated very close to the quantum critical point. Furthermore, we found an unexpected field-induced successive phase transition, which possibly originates from the interplay of low dimensionality and frustration.
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Affiliation(s)
- H Yamaguchi
- Department of Physical Science, Osaka Prefecture University, Osaka 599-8531, Japan
| | - K Iwase
- Department of Physical Science, Osaka Prefecture University, Osaka 599-8531, Japan
| | - T Ono
- Department of Physical Science, Osaka Prefecture University, Osaka 599-8531, Japan
| | - T Shimokawa
- Center for Collaborative Research and Technology Development, Kobe University, Kobe 657-8501, Japan
| | - H Nakano
- Graduate School of Material Science, University of Hyogo, Hyogo 678-1297, Japan
| | - Y Shimura
- Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - N Kase
- Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - S Kittaka
- Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - T Sakakibara
- Institute for Solid State Physics, The University of Tokyo, Chiba 277-8581, Japan
| | - T Kawakami
- Department of Chemistry, Osaka University, Osaka 560-0043, Japan
| | - Y Hosokoshi
- Department of Physical Science, Osaka Prefecture University, Osaka 599-8531, Japan
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Sakakibara T, Sukigara S, Otsuki T, Takahashi A, Kaneko Y, Kaido T, Saito Y, Sato N, Nakagawa E, Sugai K, Sasaki M, Goto Y, Itoh M. Imbalance of interneuron distribution between neocortex and basal ganglia: Consideration of epileptogenesis of focal cortical dysplasia. J Neurol Sci 2012; 323:128-33. [DOI: 10.1016/j.jns.2012.08.035] [Citation(s) in RCA: 14] [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: 02/03/2012] [Revised: 08/06/2012] [Accepted: 08/31/2012] [Indexed: 01/17/2023]
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