1
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Shinji H, Sasaki N, Hamim I, Itoh Y, Taku K, Hayashi Y, Minato N, Moriyama H, Arie T, Komatsu K. Dynamin-related protein 2 interacts with the membrane-associated methyltransferase domain of plantago asiatica mosaic virus replicase and promotes viral replication. Virus Res 2023; 331:199128. [PMID: 37149224 DOI: 10.1016/j.virusres.2023.199128] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023]
Abstract
Positive-strand RNA viruses replicate their RNA in the viral replication complex, a spherical structure formed by remodeling of host intracellular membranes. This process also requires the interaction between viral membrane-associated replication proteins and host factors. We previously identified the membrane-associated determinant of the replicase of plantago asiatica mosaic virus (PlAMV), a positive-strand RNA virus of the genus Potexvirus, in its methyltransferase (MET) domain, and suggested that its interaction with host factors is required to establish viral replication. Here we identified Nicotiana benthamiana dynamin-related protein 2 (NbDRP2) as an interactor of the MET domain of the PlAMV replicase by co-immunoprecipitation (Co-IP) and mass spectrometry analysis. NbDRP2 is closely related to the DRP2 subfamily proteins in Arabidopsis thaliana, AtDRP2A and AtDRP2B. Confocal microscopy observation and Co-IP confirmed the interaction between the MET domain and NbDRP2. Also, the expression of NbDRP2 was induced by PlAMV infection. PlAMV accumulation was reduced when the expression of NbDRP2 gene was suppressed by virus-induced gene silencing. In addition, PlAMV accumulation was reduced in protoplasts treated with dynamin inhibitor. These results indicate a proviral role of the interaction of NbDRP2 with the MET domain in PlAMV replication.
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Affiliation(s)
- H Shinji
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan.
| | - N Sasaki
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - I Hamim
- Department of Plant Pathology, Bangladesh Agricultural University, Mymensingh 2202, Bangladesh; International Research Fellow, Japan Society for the Promotion of Science, Tokyo 102-0083, Japan
| | - Y Itoh
- Smart-Core-Facility Promotion Organization, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - K Taku
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - Y Hayashi
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - N Minato
- Institute of Science and Technology, Niigata University, Niigata 950-2181 Japan
| | - H Moriyama
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - T Arie
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
| | - K Komatsu
- Graduate School for Agriculture, Tokyo University of Agriculture and Technology (TUAT), Tokyo 183-8509, Japan
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2
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Hosaka T, Furuno S, Terada M, Hamano Y, Komatsu K, Okubo K, Koyama Y, Suzuki T, Tsuji H, Tamaoka A, Mizutani T. Tracheoarterial fistula in a patient with amyotrophic lateral sclerosis successfully managed by overinflation of the tracheostomy tube cuff alone: a case report. J Med Case Rep 2023; 17:65. [PMID: 36829250 PMCID: PMC9960659 DOI: 10.1186/s13256-023-03799-z] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 01/31/2023] [Indexed: 02/26/2023] Open
Abstract
BACKGROUND Tracheoarterial fistula is the most devastating complication after tracheostomy, and its mortality, without definitive treatment, approaches 100%. In general, the combination of bedside emergency management, that is, overinflation of the tracheostomy tube cuff, and definitive treatment such as surgical or endovascular intervention is necessary to prevent the poor outcome. Patients with neuromuscular diseases such as amyotrophic lateral sclerosis are susceptible to tracheoarterial fistula because of long-term mechanical ventilation and muscle weakness. CASE PRESENTATION We describe a case of tracheoarterial fistula in a Japanese 39-year-old patient with amyotrophic lateral sclerosis with long-term ventilator management. The patient was clinically diagnosed with a tracheoarterial fistula because of massive bleeding following sentinel hemorrhage. The massive hemorrhage was controlled by overinflation of the tracheostomy tube cuff alone, without definitive treatment. CONCLUSIONS This case suggests overinflation of the tracheostomy tube cuff alone plays an important role, semi-permanently, in the management of tracheoarterial fistula, especially in cases where surgical or endovascular intervention is not indicated. Clinicians taking care of patients with tracheostomy undergoing long-term mechanical ventilation should be aware that tracheoarterial fistula might occur following tracheostomy.
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Affiliation(s)
- Takashi Hosaka
- Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki, 305-8575, Japan. .,Department of Internal Medicine, Ibaraki Western Medical Center, University of Tsukuba Hospital/Jichi Medical University Joint Ibaraki Western Regional Clinical Education Center, Chikusei, Ibaraki, 308-0813, Japan. .,Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki, 308-0813, Japan.
| | - Shintaro Furuno
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Makoto Terada
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan ,grid.20515.330000 0001 2369 4728Department of Internal Medicine, Ibaraki Western Medical Center, University of Tsukuba Hospital/Jichi Medical University Joint Ibaraki Western Regional Clinical Education Center, Chikusei, Ibaraki 308-0813 Japan ,Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Yumiko Hamano
- Department of Otolaryngology, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Kenichi Komatsu
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Katsuichiro Okubo
- Department of Internal Medicine, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
| | - Yasuaki Koyama
- grid.412814.a0000 0004 0619 0044Department of Emergency and Critical Care Medicine, University of Tsukuba Hospital, Ibaraki, 305-8576 Japan ,grid.414178.f0000 0004 1776 0989Department of Emergency and Critical Care Medicine, Hitachi General Hospital, Hitachi, Ibaraki 317-0077 Japan
| | - Tetsu Suzuki
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Hiroshi Tsuji
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Akira Tamaoka
- grid.20515.330000 0001 2369 4728Division of Clinical Medicine, Department of Neurology, Faculty of Medicine, University of Tsukuba, Tsukuba, Ibaraki 305-8575 Japan
| | - Taro Mizutani
- Department of Anesthesiology, Ibaraki Western Medical Center, Chikusei, Ibaraki 308-0813 Japan
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3
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Ueda A, Komatsu K, Takahashi M. [Abnormal posture of the trunk related to donepezil hydrochloride: report of 2 cases]. Rinsho Shinkeigaku 2023; 63:85-91. [PMID: 36725013 DOI: 10.5692/clinicalneurol.cn-001792] [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] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Patient 1, an 80-year-old woman with Alzheimer's disease, had been taking donepezil 5 mg for 2 years. Donepezil was increased to 10 mg, and 2 months later, the patient developed dropped head syndrome. MRI and needle EMG abnormality of the neck extensor muscles suggested focal myopathy, but the symptom disappeared within 2 months by discontinuing donepezil. Patient 2, a 78-year-old man with Lewy body dementia, had been taking levodopa and pramipexole (PPX). One month after tapering levodopa, donepezil 3 mg was introduced, and Pisa syndrome (bending of the trunk to the right anterior direction) developed 10 days later. Donepezil and PPX were discontinued and levodopa was increased. Within 5 months, his posture had almost recovered. Cholinesterase inhibitors can induce abnormal posture of the trunk, and clinicians should be aware of this uncommon but important side effect.
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Affiliation(s)
- Akihiro Ueda
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
| | - Makio Takahashi
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
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4
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Komatsu K, Ko JA, Shimizu A, Okumichi H, Kiuchi Y. Functional Analysis of Semaphorin 3A in Retinal Ganglion Cells under Hypoxia In Vitro. BIOL BULL+ 2023. [DOI: 10.1134/s1062359022700017] [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: 02/24/2023]
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5
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Kado S, Kamiya K, Hosaka T, Kawamura T, Komatsu K, Kajii E, Takahashi H, Komine M, Ohtsuki M. Adult invasive meningococcal disease caused by Neisseria meningitidis classified as serogroup B and sequence type 15947. J Dermatol 2022; 50:e129-e130. [PMID: 36514904 DOI: 10.1111/1346-8138.16664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 10/02/2022] [Accepted: 11/21/2022] [Indexed: 12/15/2022]
Affiliation(s)
- Soichiro Kado
- Department of Dermatology, Ibaraki Western Medical Center, Ibaraki, Japan.,Department of Dermatology, Jichi Medical University, Tochigi, Japan
| | - Koji Kamiya
- Department of Dermatology, Jichi Medical University, Tochigi, Japan
| | - Takashi Hosaka
- Department of Internal Medicine, Ibaraki Western Medical Center, Ibaraki, Japan
| | - Tetsuya Kawamura
- Department of Internal Medicine, Ibaraki Western Medical Center, Ibaraki, Japan
| | - Kenichi Komatsu
- Department of Internal Medicine, Ibaraki Western Medical Center, Ibaraki, Japan
| | - Eiji Kajii
- Department of Internal Medicine, Ibaraki Western Medical Center, Ibaraki, Japan
| | - Hideyuki Takahashi
- Department of Bacteriology, National Institute of Infectious Disease, Tokyo, Japan
| | - Mayumi Komine
- Department of Dermatology, Jichi Medical University, Tochigi, Japan
| | - Mamitaro Ohtsuki
- Department of Dermatology, Jichi Medical University, Tochigi, Japan
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6
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Yamashita K, Komatsu K, Ohhara T, Munakata K, Irifune T, Shinmei T, Sugiyama K, Kawamata T, Kagi H. In situ single-crystal neutron diffraction of a high-pressure phase of sodium chloride hydrate. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322091288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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7
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Komatsu K. Structure of high-pressure ices revealed from single-crystal and powder neutron diffraction. Acta Cryst Sect A 2022. [DOI: 10.1107/s2053273322095237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/19/2023]
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8
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Goto K, Komatsu K, Sekizuka T, Ebisawa H, Ootake M, Honda M, Nagata N, Yoshida D, Yanaoka T, Kimura H, Kuroda M. Detection of SARS-CoV-2 Genome for over 100 Days after COVID-19 Onset. Jpn J Infect Dis 2022; 75:620-622. [PMID: 35908868 DOI: 10.7883/yoken.jjid.2021.841] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the causative agent of coronavirus disease 2019, is spreading globally. In general, the viral genome becomes undetectable within a couple of weeks after infection. Herein, we report a case of long-term detection of the SARS-CoV-2 genome from the same individual for 106 days. Whole genome sequencing was performed on specimens taken at the onset of the disease and at 2 months after onset, and the B.1.1.7 lineage was detected in both samples. Comparison of the full-length sequences revealed a single-base difference and no amino acid mutations. This is the first case in Japan where the virus was detected over a long time, and the full-length sequences were compared.
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Affiliation(s)
- Keiko Goto
- Department of Virology, Ibaraki Prefectural Institute of Public Health, Japan
| | - Kenichi Komatsu
- Department of Internal Medicine, Ibaraki Western Medical Center, Japan
| | - Tsuyoshi Sekizuka
- Pathogen Genomics Center, National Institute of Infectious Diseases, Japan
| | - Hiromi Ebisawa
- Department of Internal Medicine, Ibaraki Western Medical Center, Japan
| | | | | | - Noriko Nagata
- Department of Virology, Ibaraki Prefectural Institute of Public Health, Japan
| | - Daisuke Yoshida
- Department of Virology, Ibaraki Prefectural Institute of Public Health, Japan
| | - Toshikazu Yanaoka
- Department of Virology, Ibaraki Prefectural Institute of Public Health, Japan
| | - Hirokazu Kimura
- Department of Health Science, Gunma Paz University Graduate School, Japan
| | - Makoto Kuroda
- Pathogen Genomics Center, National Institute of Infectious Diseases, Japan
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9
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Imanaka S, Komatsu K, Oka Y, Takahashi M. [Eosinophilic granulomatosis with polyangiitis presenting with ischemic optic neuropathy]. Rinsho Shinkeigaku 2022; 62:481-486. [PMID: 35644584 DOI: 10.5692/clinicalneurol.cn-001732] [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] [Indexed: 06/15/2023]
Abstract
A 60-year-old man with a history of bronchial asthma and nasal polyp presented with loss of vision in the right eye. His visual loss progressed within a single day, and he presented to our hospital 5 days after the onset of the symptom. Fundoscopy showed swelling and hemorrhage of the right optic disc. Blood tests revealed increased eosinophils, C-reactive protein, and perinuclear anti-neutrophil cytoplasmic antibody. Cerebrospinal fluid was normal. Cranial MRI showed local enhancement of the right optic disc and posterior ciliary arteries. He was diagnosed with arteritic anterior ischemic optic neuropathy caused by eosinophilic granulomatosis with polyangiitis (EGPA). High dose intravenous methylprednisolone was started on presentation, but the patient showed no improvement in visual function. Although a rare complication, ischemic optic neuropathy associated with EGPA should be noted, as this is an emergent condition and requires prompt diagnosis and treatment.
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Affiliation(s)
- Shohei Imanaka
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
| | - Yuwa Oka
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
| | - Makio Takahashi
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute
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10
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Hirato T, Komatsu K, Nishida N, Matsumoto S. Reply to the Letter "Could the Possibility of Secondary Central Nervous System Lymphoma Be Ruled Out in This Patient?". Intern Med 2021; 60:3193. [PMID: 33840702 PMCID: PMC8545628 DOI: 10.2169/internalmedicine.7327-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Tetsuya Hirato
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Namiko Nishida
- Department of Neurosurgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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11
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Affiliation(s)
- Tetsuya Hirato
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Namiko Nishida
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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12
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Narita N, Ito R, Mimura M, Oyama T, Tanaka Y, Fukuta H, Akiyama N, Satake A, Nakagawa H, Kubota K, Teh BW, Komatsu K, Kobayashi W. Comparative study for closure methods of maxillary defects after maxillectomy, a free flap versus a maxillary obturator. Journal of Oral and Maxillofacial Surgery, Medicine, and Pathology 2021. [DOI: 10.1016/j.ajoms.2020.07.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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13
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Bauer R, Tse JS, Komatsu K, Machida S, Hattori T. Slow compression of crystalline ice at low temperature. Nature 2020; 585:E9-E10. [PMID: 32939064 DOI: 10.1038/s41586-020-2697-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 08/10/2020] [Indexed: 11/09/2022]
Affiliation(s)
- R Bauer
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatchewan, Saskatoon, Canada
| | - J S Tse
- Department of Physics and Engineering Physics, University of Saskatchewan, Saskatchewan, Saskatoon, Canada.
| | - K Komatsu
- Geochemical Research Center (GCRC), Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - S Machida
- Neutron Science and Technology Center, CROSS, Tokai, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, Naka-gun, Japan
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14
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Komatsu K, Teraura H, Yamaguchi H, Kotani K. Difference in the Types of Treated Cancer between Clinics and Small-to-Middle-Sized Hospitals in Rural Communities of Japan. TOHOKU J EXP MED 2020; 249:291-294. [PMID: 31875580 DOI: 10.1620/tjem.249.291] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Resolution of regional disparities in cancer mortality is global challenge. Establishing an equal system of cancer treatment throughout the country is required under the Cancer Control Act in Japan. The types of treated cancer may reflect practical experience at the institutions and cooperation to other institutions. This study investigated the types treated at the institutions in rural communities of Japan. A questionnaire survey was conducted for 811 public rural institutions (clinics and small-to-middle-sized hospitals [< 200 beds]) in 2013. The survey's items included the types of treated cancer (14 categories: stomach, colon, breast, liver, biliary tract, pancreatic, prostate, esophageal, lung, renal, urinary tract, testicular, hematopoietic, and others) and the first five types were defined as major cancers. The data were analyzed between hospitals and clinics. The response rate was about 60%, and of 177 hospitals and 281 clinics, 54 hospitals (30%) and 10 clinics (3%) reported the types of cancer. The median number of cancer types in hospitals was significantly greater than that of clinics (4 [interquartile range 3.0-7.8]) vs. 1 [1.0-1.8], P < 0.01). The prevalence of hospitals treating at least one of five major cancers was significantly greater than that of clinics (96% vs. 30%, P < 0.01). The prevalence of clinics treating prostate cancer was significantly greater than that of hospitals (31% vs. 70%, P = 0.03). In conclusion, most types of cancer are treated at small-to-middle-sized hospitals, except for prostate cancer, providing basic information about cancer treatment in rural communities of Japan.
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Affiliation(s)
- Kenichi Komatsu
- Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
| | - Hiroyuki Teraura
- Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
| | | | - Kazuhiko Kotani
- Division of Community and Family Medicine, Center for Community Medicine, Jichi Medical University
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15
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Oka Y, Komatsu K, Matsumoto S. P2-20-06. C8 plexopathy following median sternotomy. Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.06.221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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16
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Kimura K, Okada Y, Fujii C, Komatsu K, Takahashi R, Matsumoto S, Kondo T. Clinical characteristics of autoimmune disorders in the central nervous system associated with myasthenia gravis. J Neurol 2019; 266:2743-2751. [PMID: 31342158 DOI: 10.1007/s00415-019-09461-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 05/11/2019] [Revised: 07/02/2019] [Accepted: 07/08/2019] [Indexed: 01/06/2023]
Abstract
Myasthenia gravis (MG) is occasionally associated with autoimmune diseases in the central nervous system (CNS), such as neuromyelitis optica spectrum disorder (NMOSD), multiple sclerosis (MS), Morvan syndrome, and anti-N-methyl-D-aspartate receptor (NMDAR) encephalitis. Here, we report five original cases associated with autoimmune disorders in the CNS among 42 patients with MG in a single tertiary hospital in Japan (11.9%). In four of these five cases, the second disease developed when the preceding disease was unstable. Accurate diagnosis of the newly developing disease may be difficult in such cases, because some neurological symptoms can be seen in both disorders. This implies the great importance of recognizing the possible co-occurrence of MG and disorders in the CNS. In addition, a comprehensive review of the literature revealed distinct clinical characteristics depending on the associated disease in the CNS, including thymic pathology and temporal relationship between MG and associated CNS disorders. Notably, NMOSD usually develops after the onset of MG and thymectomy, in clear contrast to MS. Thymoma is highly prevalent among patients with Morvan syndrome, in contract to cases with NMOSD and MS. The analysis of clinical characteristics, representing the first such investigation to the best of our knowledge, suggests different pathogeneses of these autoimmune diseases in the CNS, and provides significant implications for clinical practice.
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Affiliation(s)
- Kimitoshi Kimura
- Department of Neurology, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute, 2-4-20 Ogimachi, Kita-ku, Osaka, 530-8480, Japan
- Department of Immunology, National Center of Neurology and Psychiatry, National Institute of Neuroscience, 4-1-1 Ogawahigashi, Kodaira, 187-8502, Tokyo, Japan
| | - Yoichiro Okada
- Department of Neurology, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
- Department of Neurology, Kansai Medical University Medical Center, 10-15 Fumizonocho, Moriguchi, 570-8507, Osaka, Japan
| | - Chihiro Fujii
- Department of Neurology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajiicho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute, 2-4-20 Ogimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University Graduate School of Medicine, 54 Kawaharacho, Shogoin, Sakyo-ku, Kyoto, 606-8507, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute, 2-4-20 Ogimachi, Kita-ku, Osaka, 530-8480, Japan
| | - Takayuki Kondo
- Department of Neurology, Kitano Hospital, Tazuke Kofukai Medical Research Institute, 2-4-20 Ogimachi, Kita-ku, Osaka, 530-8480, Japan.
- Department of Neurology, Kansai Medical University Medical Center, 10-15 Fumizonocho, Moriguchi, 570-8507, Osaka, Japan.
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17
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Affiliation(s)
- Yasumasa Hashimoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
- Department of Molecular Therapy, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Japan
- Department of Neurology, Kansai Medical University, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Tomokazu Nakagawa
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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18
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Mezaki N, Miura T, Ogaki K, Eriguchi M, Mizuno Y, Komatsu K, Yamazaki H, Suetsugi N, Kawajiri S, Yamasaki R, Ishiguro T, Konno T, Nozaki H, Kasuga K, Okuma Y, Kira JI, Hara H, Onodera O, Ikeuchi T. Duplication and deletion upstream of LMNB1 in autosomal dominant adult-onset leukodystrophy. Neurol Genet 2018; 4:e292. [PMID: 30697589 PMCID: PMC6340331 DOI: 10.1212/nxg.0000000000000292] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Accepted: 09/10/2018] [Indexed: 01/28/2023]
Abstract
Objective To characterize the genetic and clinical features of patients with autosomal dominant adult-onset demyelinating leukodystrophy (ADLD) carrying duplication and deletion upstream of lamin B1 (LMNB1). Methods Ninety-three patients with adult-onset leukoencephalopathy of unknown etiology were genetically analyzed for copy numbers of LMNB1 and its upstream genes. We examined LMNB1 expression by reverse transcription-qPCR using total RNA extracted from peripheral leukocytes. Clinical and MRI features of the patients with ADLD were retrospectively analyzed. Results We identified 4 patients from 3 families with LMNB1 duplication. The duplicated genomic regions were different from those previously reported. The mRNA expression level of LMNB1 in patients with duplication was significantly increased. The clinical features of our patients with LMNB1 duplication were similar to those reported previously, except for the high frequency of cognitive impairment in our patients. We found 2 patients from 1 family carrying a 249-kb genomic deletion upstream of LMNB1. Patients with the deletion exhibited relatively earlier onset, more prominent cognitive impairment, and fewer autonomic symptoms than patients with duplication. The presence of cerebellar symptoms and lesions may be characteristic in our patients with the deletion compared with the previously reported family with the deletion. Magnetic resonance images of patients with the deletion exhibited a widespread distribution of white matter lesions including the anterior temporal region. Conclusions We identified 4 Japanese families with ADLD carrying duplication or deletion upstream of LMNB1. There are differences in clinical and MRI features between the patients with the duplication and those with the deletion upstream of LMNB1.
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Affiliation(s)
- Naomi Mezaki
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Takeshi Miura
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Kotaro Ogaki
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Makoto Eriguchi
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Yuri Mizuno
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Kenichi Komatsu
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Hiroki Yamazaki
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Natsuki Suetsugi
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Sumihiro Kawajiri
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Ryo Yamasaki
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Takanobu Ishiguro
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Takuya Konno
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Hiroaki Nozaki
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Kensaku Kasuga
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Yasuyuki Okuma
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Jun-Ichi Kira
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Hideo Hara
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Osamu Onodera
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
| | - Takeshi Ikeuchi
- Department of Molecular Genetics (N.M., T.M., T. Ishiguro, K. Kasuga, T. Ikeuchi) and Department of Neurology (N.M., T.M., T. Ishiguro, T.K., O.O.), Brain Research Institute, Niigata University; Department of Neurology (K.O., S.K., Y.O.), Juntendo University Shizuoka Hospital; Division of Neurology, Department of Internal Medicine (M.E., N.S., H.H.), Faculty of Medicine, Saga University; Department of Neurology (Y.M., R.Y., J.-I.K.), Neurological Institute, Graduate School of Medical Sciences, Kyushu University; Department of Neurology (K. Komatsu, H.Y.), Kitano Hospital, The Tazuke Kofukai Medical Research Institute; and Medical Technology (H.N.), Graduate School of Health Sciences, Niigata University
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19
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Abstract
Plexiform schwannoma is a rare variant of schwannomas and usually presents with chronic symptoms. We herein report a case of cervical nerve plexiform schwannoma that presented with unusually sudden severe left radiculopathy of the eighth cervical nerve after physical exercise. Coronal short-tau inversion recovery (STIR) magnetic resonance imaging (MRI) revealed a multinodular tumor along the eighth cervical nerve. The tumor was partially resected. A pathological analysis revealed that the tumor was a schwannoma, and we diagnosed the case as a plexiform schwannoma. The unusual sudden-onset presentation in this case was considered to be caused by the unusual localization of the tumor involving the nerve root and mechanical stress due to physical exercise.
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Affiliation(s)
- Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Hiroki Toda
- Department of Neurosurgery, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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20
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Hashimoto Y, Komatsu K, Kouhashi M, Matsumoto S. Rapidly Progressive Systemic Lupus Erythematosus-related Meningitis with Asymmetric Magnetic Resonance Imaging Findings. Intern Med 2018; 57:2595-2596. [PMID: 29607960 PMCID: PMC6172549 DOI: 10.2169/internalmedicine.0567-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Affiliation(s)
- Yasumasa Hashimoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Mutuo Kouhashi
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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21
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Russell K, Herrick K, Venkat H, Brady S, Komatsu K, Goodin K, Berisha V, Sunenshine R, Perez-Velez C, Elliott S, Olsen SJ, Reed C. Utility of state-level influenza disease burden and severity estimates to investigate an apparent increase in reported severe cases of influenza A(H1N1) pdm09 - Arizona, 2015-2016. Epidemiol Infect 2018; 146:1359-1365. [PMID: 29898797 PMCID: PMC9133685 DOI: 10.1017/s0950268818001516] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Revised: 04/27/2018] [Accepted: 05/16/2018] [Indexed: 11/06/2022] Open
Abstract
The Arizona Department of Health Services identified unusually high levels of influenza activity and severe complications during the 2015-2016 influenza season leading to concerns about potential increased disease severity compared with prior seasons. We estimated state-level burden and severity to compare across three seasons using multiple data sources for community-level illness, hospitalisation and death. Severity ratios were calculated as the number of hospitalisations or deaths per community case. Community influenza-like illness rates, hospitalisation rates and mortality rates in 2015-2016 were higher than the previous two seasons. However, ratios of severe disease to community illness were similar. Arizona experienced overall increased disease burden in 2015-2016, but not increased severity compared with prior seasons. Timely estimates of state-specific burden and severity are potentially feasible and may provide important information during seemingly unusual influenza seasons or pandemic situations.
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Affiliation(s)
- K. Russell
- Epidemic Intelligence Service, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
- Influenza Division, National Center for Immunization and Respiratory Diseases, CDC, Atlanta, GA, USA
| | - K. Herrick
- Arizona Department of Health Services, Phoenix, AZ, USA
| | - H. Venkat
- Epidemic Intelligence Service, Centers for Disease Control and Prevention (CDC), Atlanta, GA, USA
- Arizona Department of Health Services, Phoenix, AZ, USA
- Maricopa County Department of Health, Phoenix, AZ, USA
| | - S. Brady
- Arizona Department of Health Services, Phoenix, AZ, USA
| | - K. Komatsu
- Arizona Department of Health Services, Phoenix, AZ, USA
| | - K. Goodin
- Maricopa County Department of Health, Phoenix, AZ, USA
| | - V. Berisha
- Maricopa County Department of Health, Phoenix, AZ, USA
| | - R. Sunenshine
- Maricopa County Department of Health, Phoenix, AZ, USA
| | - C. Perez-Velez
- Pima County Health Department, Tucson, AZ, USA
- Division of Infectious Diseases, University of Arizona College of Medicine, Tucson, AZ, USA
| | - S. Elliott
- Department of Pediatrics, University of Arizona College of Medicine, Tucson, AZ, USA
- Banner University Medicine, Tucson, AZ, USA
| | - S. J. Olsen
- Influenza Division, National Center for Immunization and Respiratory Diseases, CDC, Atlanta, GA, USA
| | - C. Reed
- Influenza Division, National Center for Immunization and Respiratory Diseases, CDC, Atlanta, GA, USA
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22
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Ishii Y, Komatsu K, Nakano S, Machida S, Hattori T, Sano-Furukawa A, Kagi H. Pressure-induced stacking disorder in boehmite. Phys Chem Chem Phys 2018; 20:16650-16656. [PMID: 29873355 DOI: 10.1039/c8cp02565g] [Citation(s) in RCA: 3] [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] [Indexed: 11/21/2022]
Abstract
The structure of an aluminum layered hydroxide, boehmite (γ-AlOOH), as a function of pressure was studied by using in situ synchrotron X-ray and neutron diffraction. Peak broadening, which is only found for hkl (h ≠ 0) peaks in the X-ray diffraction patterns, is explained by stacking disorder accompanying a continuously increasing displacement of the AlO6 octahedral layer along the a-axis. This finding could be the first experimental result for pressure-induced stacking disorder driven by continuous layer displacement. The magnitude of the layer displacement was estimated from the X-ray scattering profile calculation based on the stacking disordered structure model. Hydrogen bond geometries of boehmite, obtained by structure refinements of the observed neutron diffraction patterns for the deuterated sample up to 10 GPa, show linearly approaching O-D covalent and DO hydrogen bond distances and they merge below 26 GPa. Pressure-induced stacking disorder makes the electrostatic potential of hydrogen bonds asymmetric, yielding less chance for proton-tunnelling.
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Affiliation(s)
- Y Ishii
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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23
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Yamada Y, Ishino H, Kibayashi A, Kida Y, Hidehira N, Komatsu K, Hazumi M, Sato N, Sakai K, Yamamori H, Hirayama F, Kohjiro S. Frequency-Domain Multiplexing Readout with a Self-Trigger System for Pulse Signals from Kinetic Inductance Detectors. J Low Temp Phys 2018; 193:518-524. [PMID: 30839748 PMCID: PMC6190614 DOI: 10.1007/s10909-018-1911-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2017] [Accepted: 04/07/2018] [Indexed: 06/09/2023]
Abstract
We present the development of a frequency-domain multiplexing readout of kinetic inductance detectors (KIDs) for pulse signals with a self-trigger system. The KIDs consist of an array of superconducting resonators that have different resonant frequencies individually, allowing us to read out multiple channels in the frequency domain with a single wire using a microwave-frequency comb. The energy deposited to the resonators break Cooper pairs, changing the kinetic inductance and, hence, the amplitude and the phase of the probing microwaves. For some applications such as X-ray detections, the deposited energy is detected as a pulse signal shaped by the time constants of the quasiparticle lifetime, the resonator quality factor, and the ballistic phonon lifetime in the substrate, ranging from microseconds to milliseconds. A readout system commonly used converts the frequency-domain data to the time-domain data. For the short pulse signals, the data rate may exceed the data transfer bandwidth, as the short time constant pulses require us to have a high sampling rate. In order to overcome this circumstance, we have developed a KID readout system that contains a self-trigger system to extract relevant signal data and reduces the total data rate with a commercial off-the-shelf FPGA board. We have demonstrated that the system can read out pulse signals of 15 resonators simultaneously with about 10 Hz event rate by irradiating α particles from 241 Am to the silicon substrate on whose surface aluminum KID resonators are formed.
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Affiliation(s)
- Y. Yamada
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - H. Ishino
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - A. Kibayashi
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - Y. Kida
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - N. Hidehira
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - K. Komatsu
- Department of Physics, Okayama University, 3-1-1 Tsushimanaka, Kita-ku, Okayama Japan
| | - M. Hazumi
- KEK, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801 Japan
| | - N. Sato
- KEK, High Energy Accelerator Research Organization, 1-1 Oho, Tsukuba, Ibaraki 305-0801 Japan
| | - K. Sakai
- NASA Goddard Space Flight Center, Greenbelt, MD 20771 USA
- CRESST II - University of Maryland, Baltimore County, MD 21250 USA
| | - H. Yamamori
- AIST, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8560 Japan
| | - F. Hirayama
- AIST, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8560 Japan
| | - S. Kohjiro
- AIST, National Institute of Advanced Industrial Science and Technology, 1-1-1 Umezono, Tsukuba, Ibaraki 305-8560 Japan
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24
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Tozuka K, Nagai SE, Kubo K, Komatsu K, Takai K, Inoue K, Matsumoto H, Hayashi Y, Tsuboi M, Yamada Y, Wang X, Suganuma M. Abstract P2-01-08: Enumeration of heterogeneous circulating tumor cells (CTCs) using size-based method in early, and metastatic, breast cancer patients. Cancer Res 2018. [DOI: 10.1158/1538-7445.sabcs17-p2-01-08] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background
The detection of circulating tumor cells (CTCs) in peripheral blood is an independent predictor of the efficacy of systemic therapy, and also a prognostic marker for patients with metastatic breast cancer. One of the main methods to detect CTCs is CellSearch system, which uses immune-magnetic separation followed by immunocytochemistry. A microdevice (CTChip from ClearCell system) can capture and enumerate CTCs based on distinctive physiological differences (size and deformability) between cancer cells and blood cells. CTChip thus obtains a larger CTC yield than affinity-based separation, which enriches a particular subgroup of cells expressing EpCAM. In this study, we enumerate CTCs in peripheral blood from early and metastatic breast cancer patients using a size-based method.
Patients and methods
We examined blood samples from a total of 18 early and metastatic breast cancer patients, after obtaining written informed consent. Blood samples were taken in sodium EDTA tubes after discarding the first 1ml of blood from the syringe. Two ml blood samples were applied to CTChip (ClearCell system), and CTCs were eventually trapped in the microwells of the CTChip. Trapped cells were analyzed by immunocytochemistry with monoclonal antibodies specific for leukocytes (CD45) and epithelial cells (CK8/18), along with 4',6-diamidino-2-phenylindole (DAPI) for nuclei: CK8/18-positive, DAPI-positive and CD45-negative cells more than 10 μm in diameter were defined as CTCs. Eight patients were examined using both the CTChip and CellSearch system to compare the yield of CTCs.
Results
Of 18 patients, 6 were de novo stage IV, 6 were recurrent and 6 were early stage breast cancer patients. Of primary tumors, 8 were HER2- and ER and/or PR +, 6 were HER2-and ER- and PR-, 3 were HER2+ and ER and/or PR +, and one was HER2+ and ER- and PR-. Using CTChip, detected CTCs ranged from 3 - 107 cells/2 ml in all cases: 3 - 83 for early stage, 19 - 156 for stage IV and 21 - 146 for recurrent. The number of CTCs found in recurrent patients tended to be higher than in early stage patients. Size-based method using CTChip clearly showed high sensitivity compared with the CellSearch system, which detected CTCs in only 2 cases out of 8. In analysis by immunochemistry, we found CK-negative, CD45-negative and DAPI positive cells with larger diameter (>16 μm) than CK-positive CTCs in most patients, and the numbers were higher in stage IV (8.5 cells of median value) and recurrent (13 cells) patients than in early stage patients (1.5 cells). Our study suggested that CK-negative large cells might be CTCs with epithelial–mesenchymal transition (EMT).
Conclusion
This size-based technology enables us to capture CTCs regardless of EpCAM expression. Enumerated CTCs varied in size and positivity of CK8/18, suggesting the heterogeneity of CTCs. Further research, especially focusing on EMT will be crucial to understand the key mechanism of metastasis and drug resistance.
Citation Format: Tozuka K, Nagai SE, Kubo K, Komatsu K, Takai K, Inoue K, Matsumoto H, Hayashi Y, Tsuboi M, Yamada Y, Wang X, Suganuma M. Enumeration of heterogeneous circulating tumor cells (CTCs) using size-based method in early, and metastatic, breast cancer patients [abstract]. In: Proceedings of the 2017 San Antonio Breast Cancer Symposium; 2017 Dec 5-9; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2018;78(4 Suppl):Abstract nr P2-01-08.
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Affiliation(s)
- K Tozuka
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - SE Nagai
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - K Kubo
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - K Komatsu
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - K Takai
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - K Inoue
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - H Matsumoto
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - Y Hayashi
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - M Tsuboi
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - Y Yamada
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - X Wang
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
| | - M Suganuma
- Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama-ken, Japan; Graduate School of Science and Engineerring, Saitama University, Saitama, Saitama-ken, Japan
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Abstract
Although central nervous system manifestations seem common in primary Sjögren's syndrome, hypertrophic pachymeningitis is rare. We herein describe a case of Sjögren's syndrome that was associated with hypertrophic pachymeningitis. Sjögren's syndrome should be considered as a cause of hypertrophic pachymeningitis.
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Affiliation(s)
- Yumiko Nakano
- Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Japan
| | - Masayoshi Yamamoto
- Department of Neurology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Japan
| | - Kenichi Komatsu
- Department of Neurology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Japan
| | - Masato Yagita
- Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Japan
| | - Masaaki Fujita
- Department of Clinical Immunology and Rheumatology, The Tazuke-Kofukai Medical Research Institute, Kitano Hospital, Japan
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Nakae Y, Hyuga M, Terada Y, Kishimoto W, Fukunaga A, Tabata S, Maesako Y, Komatsu K, Higuchi O, Nakane T, Arima N. Multiple Myeloma Presenting with Autoimmune Autonomic Ganglionopathy. Intern Med 2017; 56:3347-3351. [PMID: 29021436 PMCID: PMC5790725 DOI: 10.2169/internalmedicine.9096-17] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Autoimmune autonomic ganglionopathy is an autonomic disorder that occurs as a symptom of paraneoplastic neurological syndrome. To date, there have been no reports on multiple myeloma with autoimmune autonomic ganglionopathy. A 37-year-old Japanese woman suffered from orthostatic hypotension was diagnosed with multiple myeloma (IgG kappa type), and a serological examination revealed the presence of anti-ganglionic nicotinic acetylcholine receptor (anti-gAChR) antibodies. She was treated for multiple myeloma, as a result, the autonomic disturbance improved and her anti-gAChR antibody titer decreased to undetectable levels, despite the fact that she only achieved a partial remission of multiple myeloma. Treatment for multiple myeloma may improve autoimmune autonomic ganglionopathy.
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Affiliation(s)
- Yoshiki Nakae
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Mizuki Hyuga
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Yuta Terada
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Wataru Kishimoto
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Akiko Fukunaga
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sumie Tabata
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Yoshitomo Maesako
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Osamu Higuchi
- Department of Clinical Research, National Hospital Organization Nagasaki Kawatana Medical Center, Japan
| | | | - Nobuyoshi Arima
- Department of Hematology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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27
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Booth N, Davidson G, Imperia P, Lee S, Stuart B, Thomas P, Komatsu K, Yamane R, Prescott S, Maynard-Casely H, Nelson A, Rule K. Three impossible things before lunch – the task of a sample environment specialist. JNR 2017. [DOI: 10.3233/jnr-170041] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- N. Booth
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - G. Davidson
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - P. Imperia
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - S. Lee
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - B. Stuart
- University of Technology Sydney, Ultimo, Australia
| | - P. Thomas
- University of Technology Sydney, Ultimo, Australia
| | - K. Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Japan
| | - R. Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Japan
| | - S.W. Prescott
- School of Chemical Engineering, UNSW Australia, UNSW Sydney, NSW 2052, Australia
| | - H.E. Maynard-Casely
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - A. Nelson
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
| | - K.C. Rule
- Australian Nuclear Science and Technology Organisation (ANSTO), Lucas Heights, Australia
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28
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Komatsu K, Matsumoto S. C8 nerve root schwannoma presenting as sudden-onset painful neuropathy: Utility of stir images. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3549] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Mezaki N, Miura T, Ogaki K, Eriguchi M, Mizuno Y, Komatsu K, Yamazaki H, Ono N, Kawajiri S, Yamasaki R, Nozaki H, Kasuga K, Okuma Y, Kira J, Hara H, Onodera O, Ikeuchi T. LMNB1-related adult-onset autosomal dominant leukodystrophy: Genetic and clinical studies of four Japanese families. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Hashimoto Y, Komatsu K, Kouhashi M, Matsumoto S. Rapidly progressive noninfectious meningitis in a case of neuropsychiatric systemic lupus erythematosus. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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31
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Yamane R, Komatsu K, Kagi H. Note: Development of a new Bridgman-type high pressure cell for accurate dielectric measurements. Rev Sci Instrum 2017; 88:046104. [PMID: 28456229 DOI: 10.1063/1.4980154] [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] [Indexed: 06/07/2023]
Abstract
We developed a new high pressure cell which allows us to perform accurate dielectric measurements above 3 GPa. The developed cell is based on Bridgman type opposed anvil cells with electrodes immersed into holes in the anvils in order to make the electrode area constant under compression. As a feasibility experiment, dielectric measurements for H2O were conducted up to 6.6 GPa and obtained dielectric constants are well consistent with previous studies.
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Affiliation(s)
- R Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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32
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Affiliation(s)
- Yasuhiro Fuseya
- Department of Neurology, Kyoto University Graduate School of Medicine, Japan
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
| | - Sadayuki Matsumoto
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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33
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Kuroiwa T, Hasuo K, Yasumori K, Mizushima A, Yoshida K, Hirakata R, Komatsu K, Yamaguchi A, Masuda K. Transcatheter Embolization of Testicular Vein for Varicocele Testis. Acta Radiol 2016. [DOI: 10.1177/028418519103200409] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Percutaneous transcatheter embolization of the testicular vein was performed on 28 patients with angiographically proven varicocele testis. In 2 patients bilateral and in 26 only the left vein was embolized using 3-, 5-, or 8-mm stainless steel coils. All patients had clinically palpable varicoceles and male infertility. The grade of varicoceles improved after embolization in 23 of 28 cases (82%). Effective sperm count increased significantly from 34.5 ± 44.6 to 65.1 ± 71.0 following embolization. However, pregnancy was achieved only in one of 28 cases. Technically, the basilic vein approach was felt to be superior to the femoral vein or jugular vein approach for this procedure.
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34
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Klotz S, Komatsu K, Pietrucci F, Kagi H, Ludl AA, Machida S, Hattori T, Sano-Furukawa A, Bove LE. Ice VII from aqueous salt solutions: From a glass to a crystal with broken H-bonds. Sci Rep 2016; 6:32040. [PMID: 27562476 PMCID: PMC5000010 DOI: 10.1038/srep32040] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 07/26/2016] [Indexed: 11/16/2022] Open
Abstract
It has been known for decades that certain aqueous salt solutions of LiCl and LiBr readily form glasses when cooled to below ≈160 K. This fact has recently been exploited to produce a « salty » high-pressure ice form: When the glass is compressed at low temperatures to pressures higher than 4 GPa and subsequently warmed, it crystallizes into ice VII with the ionic species trapped inside the ice lattice. Here we report the extreme limit of salt incorporation into ice VII, using high pressure neutron diffraction and molecular dynamics simulations. We show that high-pressure crystallisation of aqueous solutions of LiCl∙RH2O and LiBr∙RH2O with R = 5.6 leads to solids with strongly expanded volume, a destruction of the hydrogen-bond network with an isotropic distribution of water-dipole moments, as well as a crystal-to-amorphous transition on decompression. This highly unusual behaviour constitutes an interesting pathway from a glass to a crystal where translational periodicity is restored but the rotational degrees of freedom remaining completely random.
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Affiliation(s)
- S Klotz
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - F Pietrucci
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
| | - A-A Ludl
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France
| | - S Machida
- CROSS-Tokai, Research Centre for Neutron Science and Technology, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, Tokai, Naka, Ibaraki 319-1195, Japan
| | - L E Bove
- Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, CNRS UMR 7590, Université Pierre-et-Marie-Curie, F-75252 Paris, France.,Institute of Condensed Matter Physics, Ecole Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland
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35
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Ayukawa Y, Komatsu K, Kashiwa T, Akai K, Yamada M, Teraoka T, Arie T. Detection and differentiation of Fusarium oxysporum f. sp. lycopersici race 1 using loop-mediated isothermal amplification with three primer sets. Lett Appl Microbiol 2016; 63:202-9. [PMID: 27248357 DOI: 10.1111/lam.12597] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 05/30/2016] [Accepted: 05/31/2016] [Indexed: 11/30/2022]
Abstract
UNLABELLED Fusarium oxysporum f. sp. lycopersici (Fol) causes tomato wilt. Based on the difference in pathogenicity towards tomato cultivars, Fol is classified into three races. In this study, a rapid method is developed for the detection and discrimination of Fol race 1 using a loop-mediated isothermal amplification (LAMP) assay with two primer sets targeting a region of the nucleotide sequence of the SIX4 gene specific for race 1 and a primer set targeting the SIX5 gene, conserved in all known Fol isolates. Upon LAMP reaction, amplification using all three primer sets was observed only when DNA of Fol race 1 was used as a template, and not when DNA of other Fol races or other fungal species was used. This method could detect 300 fg of Fol race 1 DNA, a 100-fold higher sensitivity than that obtained by conventional PCR. The method can also detect DNA extracted from soil artificially infested with Fol race 1. It is now possible to detect Fol race 1 in colonies and infected tomato stems without DNA isolation. This method is a rapid and simple tool for discrimination of Fol race 1. SIGNIFICANCE AND IMPACT OF THE STUDY This study developed a loop-mediated isothermal amplification (LAMP) assay for detection and differentiation of Fusarium oxysporum f. sp. lycopersici (Fol) race 1 by using three primer sets targeting for the SIX4 and SIX5 genes. These genes are present together only in Fol race 1. This method can detect Fol race 1 in infected tomato stems without DNA extraction, affording an efficient diagnosis of Fusarium wilt on tomatoes in the field.
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Affiliation(s)
- Y Ayukawa
- United Graduate School of Agricultural Science, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan.,Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
| | - K Komatsu
- Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
| | - T Kashiwa
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science (CSRS), Wako, Saitama, Japan
| | - K Akai
- Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
| | - M Yamada
- Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
| | - T Teraoka
- Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
| | - T Arie
- Laboratory of Plant Pathology, Graduate School of Agriculture, Tokyo University of Agriculture and Technology (TUAT), Fuchu, Tokyo, Japan
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36
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Nagata Y, Watanabe T, Nagasaka K, Yamada M, Murai M, Takeuchi S, Murase M, Yazaki T, Murase T, Komatsu K, Kaizuka M, Sano M, Asano K, Ando C, Taniuchi N. Total dosage of gardenia fruit used by patients with mesenteric phlebosclerosis. BMC Complement Altern Med 2016; 16:207. [PMID: 27402114 PMCID: PMC4940942 DOI: 10.1186/s12906-016-1182-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2015] [Accepted: 06/29/2016] [Indexed: 12/11/2022]
Abstract
BACKGROUND Mesenteric phlebosclerosis (MP) is a disease characterized by fibrotic change or calcification of the mesenteric vein. Recently, there has been an increase in case reports of MP related to herbal medicine usage. Long-term intake of gardenia fruit (GF) is suspected as a possible cause. However, many GF users do not develop this disease and the association between GF and MP remains unclear. In this study, we investigated for the first time the dosage of GF used by patients with and without MP. METHODS We used a medical chart review study design to assess the association between GF and MP. We reviewed patients with a history of intake of herbal medicines containing GF. Among these patients, we selected patients who were examined by colonoscopy and abdominal plain computed tomography (CT). We investigated the findings of colonoscopy, CT scan and histological examination. We assessed the total dosages of GF alongside the duration of ambulatory visit, the administration period of herbal medicine containing GF and pre-existing disease in order to compare MP cases and non-MP patients. RESULTS Ten MP cases and 42 non-MP patients were analyzed. We summarized clinical findings of MP cases. All MP cases used more GF than non-MP patients and were administered more than approximately 5,000 grams of GF in cumulative dosage. CONCLUSIONS This study indicated that excessive intake of GF contributes to and/or accelerates the development of MP suggesting that long-term usage of GF in excessive amounts increases the risk of MP.
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Affiliation(s)
- Yutaka Nagata
- Department of Oriental Traditional Medical Center, Suwa Central Hospital, 4300 Tamagawa, Chino, Nagano, 391-8503, Japan.
- River Side Clinic, Chino, Nagano, Japan.
| | - Tetsuo Watanabe
- Department of Japanese Oriental Medicine and Rheumatology, Toyama Prefectural Central Hospital, Toyama, Toyama, Japan
| | - Kazuhiko Nagasaka
- Department of Oriental Traditional Medical Center, Suwa Central Hospital, 4300 Tamagawa, Chino, Nagano, 391-8503, Japan
- River Side Clinic, Chino, Nagano, Japan
| | - Masaaki Yamada
- Department of Epidemiology and Health Policy, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Toyama, Japan
| | - Masafumi Murai
- Hokudaimae Clinic, Hokkaido Kampo Medical Center, Sapporo, Hokkaido, Japan
- Shinsapporo Keiaikai Hospital, Sapporo, Hokkaido, Japan
| | - Sunao Takeuchi
- Department of Internal medicine, Suwa Central Hospital, Chino, Nagano, Japan
| | - Mai Murase
- Department of Internal medicine, Suwa Central Hospital, Chino, Nagano, Japan
| | - Toshinori Yazaki
- Department of Internal medicine, Suwa Central Hospital, Chino, Nagano, Japan
| | - Takayuki Murase
- Department of Internal medicine, Suwa Central Hospital, Chino, Nagano, Japan
| | - Kenichi Komatsu
- Department of Surgery, Suwa Central Hospital, Chino, Nagano, Japan
| | - Machiko Kaizuka
- Department of Surgery, Suwa Central Hospital, Chino, Nagano, Japan
| | - Mika Sano
- Department of Radiology, Suwa Central Hospital, Chino, Nagano, Japan
| | - Koji Asano
- Department of Pathology, Suwa Central Hospital, Chino, Nagano, Japan
| | | | - Norihide Taniuchi
- Department of Internal medicine, Suwa Central Hospital, Chino, Nagano, Japan
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37
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Komatsu K, Noritake F, Machida S, Sano-Furukawa A, Hattori T, Yamane R, Kagi H. Partially ordered state of ice XV. Sci Rep 2016; 6:28920. [PMID: 27375120 PMCID: PMC4931510 DOI: 10.1038/srep28920] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 06/13/2016] [Indexed: 11/24/2022] Open
Abstract
Most ice polymorphs have order–disorder “pairs” in terms of hydrogen positions, which contributes to the rich variety of ice polymorphs; in fact, three recently discovered polymorphs— ices XIII, XIV, and XV—are ordered counter forms to already identified disordered phases. Despite the considerable effort to understand order–disorder transition in ice crystals, there is an inconsistency among the various experiments and calculations for ice XV, the ordered counter form of ice VI, i.e., neutron diffraction observations suggest antiferroelectrically ordered structures, which disagree with dielectric measurement and theoretical studies, implying ferroelectrically ordered structures. Here we investigate in-situ neutron diffraction measurements and density functional theory calculations to revisit the structure and stability of ice XV. We find that none of the completely ordered configurations are particular favored; instead, partially ordered states are established as a mixture of ordered domains in disordered ice VI. This scenario in which several kinds of ordered configuration coexist dispels the contradictions in previous studies. It means that the order–disorder pairs in ice polymorphs are not one-to-one correspondent pairs but rather have one-to-n correspondence, where there are n possible configurations at finite temperature.
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Affiliation(s)
- K Komatsu
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - F Noritake
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - S Machida
- CROSS-Tokai, Research Center for Neutron Science and Technology, IQBRC Bldg, 162-1 Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - A Sano-Furukawa
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - T Hattori
- J-PARC Center, Japan Atomic Energy Agency, 2-4 Shirakata-Shirane, Tokai, Ibaraki 319-1195, Japan
| | - R Yamane
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
| | - H Kagi
- Geochemical Research Center, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-0033, Japan
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Komatsu K, Araki F, Ohno T, Shimohigashi Y, Onizuka R. SU-F-T-541: Impact of VMAT Dose Calculations with Respiratory Movements in Lung. Med Phys 2016. [DOI: 10.1118/1.4956726] [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: 11/07/2022] Open
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Tozuka K, Nagai SE, Inoue K, Komatsu K, Matsumoto H, Hayashi Y, Kurozumi S, Suganuma M. Abstract P2-02-20: Enumeration of heterogeneous circulating tumor cells (CTCs) in metastatic breast cancer patients based on size and deformability. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p2-02-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background :
The detection of circulating tumor cells (CTCs) in peripheral blood is an independent predictor of the efficacy of systemic therapy and a prognostic marker for patients with metastatic breast cancer. One of the leading techniques to detect CTCs uses immune-magnetic separation followed by immunocytochemistry. A microdevice can capture and enumerate CTCs using distinctive physiological difference (size and deformability) between cancer cells and blood cells. This microdevice thus obtains a larger CTC yield than that of affinity based separation which enriches the samples from a particular subgroup of cells based on biomarker (EpCAM) used. In this study, we investigated CTCs in peripheral blood from metastatic breast cancer patients using this microdevice.
Patients and methods:
We examined blood samples of 9 patients with heavily treated locally recurrent or metastatic breast cancer. Informed consent from these patients was obtained before blood extraction. Blood samples were taken into sodium EDTA tubes after discarding the first 1ml of blood samples. Two ml whole blood were subjected to the microdevice (Clear cell system), and CTCs were trapped in the microwells: Trapped cells were analyzed by immunocytochemistry with monoclonal antibodies specific for leukocytes (CD45) and epithelial cells (CK8/18), along with 4,2-diamidino-2-phenylndole dihydrochloride (DAPI) for nuclei. CK8/18- positive, DAPI-positive and CD45-negative cells were defined as CTCs. Three patients were examined using both this microdevice and affinity-based separation with EpCAM, to compare the yield of CTCs.
Results:
Of the 9 patients: 7 had ER-positive primary tumors, and 6 had PgR-positive ones, HER2 overexpression was detected in 2 primary tumors. CTCs were detected in 8 patients. The single patient in whom CTCs were not detected suffered from local recurrence (axillary lymph node metastasis) only, with no distant metastases. We were also unable to detect CTCs using EpCAM affinity method for this patient. The number of detected CTCs in the other patients ranged from 19/2ml to 156/2ml (mean 90/2ml), and the sizes of CTCs varied from 5 to 16μm. CK8/18-negative and DAPI positive were detected in most patients, and these cells tended to be larger than CK8/18-positive cells, suggesting that epithelial–mesenchymal transition (EMT) might occur in CTCs. The total number of CTCs detected by the microdevice from 2 patients was larger than that of CTCs detected by EpCAM affinity method (107/2ml vs 1/7.5ml, and 19/2ml vs 39/7.5ml).
Conclusion:
CTCs detected by this microdevice varied in regard to the size of trapped cells and characteristics examined by immunochemistry, suggesting the heterogeneity of CTCs. Further research on this heterogeneity is vital in order to develop personalized treatment for patients with metastatic breast cancer.
Citation Format: Tozuka K, Nagai SE, Inoue K, Komatsu K, Matsumoto H, Hayashi Y, Kurozumi S, Suganuma M. Enumeration of heterogeneous circulating tumor cells (CTCs) in metastatic breast cancer patients based on size and deformability. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P2-02-20.
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Affiliation(s)
- K Tozuka
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - SE Nagai
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - K Inoue
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - K Komatsu
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - H Matsumoto
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - Y Hayashi
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - S Kurozumi
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
| | - M Suganuma
- Division of Breast Surgery, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Division of Breast Surgery, 2 Division of Breas Research Institute for Clinical Oncology, Saitama Cancer Center, Ina, Kita-adachi-gun, Saitama, Japan; Graduate School of Science and Engineering, Saitama University, Shimo-okubo, Sakura-ku, Saitama, Japan
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Kurozumi S, Inoue K, Matsumoto H, Hayashi Y, Tozuka K, Kubo K, Komatsu K, Takai K, Nagai SE, Oba H, Horiguchi J, Takeyoshi I, Kurosumi M. Abstract P4-14-17: Prognostic value of tumor-infiltrating lymphocytes in residual tumors after neoadjuvant chemotherapy concomitant with trastuzumab for HER2-positive breast cancer. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p4-14-17] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
Neoadjuvant chemotherapy (NAC) with taxanes, followed by fluorouracil, epirubicin, and cyclophosphamide (FEC), with concurrent trastuzumab is known to achieve a high pCR rate of more than 60% for HER2-positive breast cancer (BC) as well as good prognoses in those obtaining pCR. On the other hand, the prognostic significance of tumor-infiltrating lymphocytes (TILs) has recently been described in triple-negative BC. However, the prognostic and predictive values of TILs in HER2-positive BC remain unclear. In the present study, we examined the grades of TILs in pre-treatment cancer tissues and residual tumors after NAC with trastuzumab, and also investigated its predictive utility for pCR and prognostic power for HER2-positive BC.
Patients and Methods:
A total of 128 Japanese women with HER2-positive BC received either paclitaxel or docetaxel followed by FEC, with concomitant trastuzumab. The proportional grades of stromal (Str)-TILs in pre-treatment biopsy specimens and residual tumors after NAC with trastuzumab were determined as follows: low grade (0-10%), intermediate grade (10-40%), and high grade (40-90%), using the criteria of the International Working Group for TILs in BC. Analysis 1: The relationship between the grades of Str-TILs in pre-treatment tumors and pCR rates was investigated. Relapse-free survival (RFS) and cancer-specific survival (CSS) were analyzed for a correlation with pre-treatment Str-TILs. Analysis 2: Alterations in the grade of Str-TILs were examined in the residual tumors of non-pCR patients, and RFS and CSS were analyzed for a correlation with residual Str-TILs.
Results:
pCR was achieved in 83 out of the 128 patients (pCR rate, 64.8%) who received NAC with trastuzumab, and RFS was significantly better in the pCR group than in the non-pCR group (p = 0.0071). Analysis 1: The patient distribution of the Str-TILs grade in pre-treatment tumors was as follows: high: 24 (18.8%); intermediate: 38 (29.7%); and low: 66 (51.6%). pCR rates correlated with the Str-TILs grade in pre-treatment tumors: 83.3% in the high group, 71.1% in the intermediate group, and 54.5% in the low group (p = 0.026); however, the Str-TILs grade in pre-treatment tumors did not correlate with survival. Analysis 2: In 45 non-pCR patients, the distribution of the Str-TILs grade in residual tumors was as follows: high: 9 (20.0%); intermediate: 8 (17.8%); and low: 28 (62.2%), respectively. In non-pCR patients, the rate of a high Str-TILs grade was greater in residual tumors than in pre-treatment tumors (residual, 20.0%, pre-treatment, 8.9%). RFS was significantly better with a high grade than with a low grade of residual Str-TILs (p = 0.033).
Conclusions:
The status of TILs in pre-treatment tumors predicted responses to NAC concomitant with trastuzumab in HER2-positive BC. The grade of TILs was higher in residual tumors than in pre-treatment tumors, and, among non-pCR patients, the prognosis of patients with a high residual-TILs grade was better prognosis than that of patients with a low residual-TILs grade. We speculate that an examination of TILs in residual tumors after NAC with trastuzumab may be necessary for selecting patients with a good prognosis from non-pCR patients.
Citation Format: Kurozumi S, Inoue K, Matsumoto H, Hayashi Y, Tozuka K, Kubo K, Komatsu K, Takai K, Nagai SE, Oba H, Horiguchi J, Takeyoshi I, Kurosumi M. Prognostic value of tumor-infiltrating lymphocytes in residual tumors after neoadjuvant chemotherapy concomitant with trastuzumab for HER2-positive breast cancer. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P4-14-17.
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Affiliation(s)
- S Kurozumi
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - K Inoue
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - H Matsumoto
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - Y Hayashi
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - K Tozuka
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - K Kubo
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - K Komatsu
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - K Takai
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - SE Nagai
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - H Oba
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - J Horiguchi
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - I Takeyoshi
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
| | - M Kurosumi
- Division of Breast Surgery, Saitama Cancer Center, Saitama, Japan; Division of Breast Oncology, Saitama Cancer Center, Saitama, Japan; Saitama Cancer Center, Saitama, Japan; Gunma University Graduate School of Medicine, Gunma, Japan
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Komatsu K, Shibata T, Shimada A, Ideno H, Nakashima K, Tabata Y, Nifuji A. Cationized gelatin hydrogels mixed with plasmid DNA induce stronger and more sustained gene expression than atelocollagen at calvarial bone defects in vivo. J Biomater Sci Polym Ed 2016; 27:419-30. [PMID: 26848778 DOI: 10.1080/09205063.2016.1139486] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Gene transduction of exogenous factors at local sites in vivo is a promising approach to promote regeneration of tissue defects owing to its simplicity and capacity for expression of a variety of genes. Gene transduction by viral vectors is highly efficient; however, there are safety concerns associated with viruses. As a method for nonviral gene transduction, plasmid DNA delivery is safer and simpler, but requires an efficient carrier substance. Here, we aimed to develop a simple, efficient method for bone regeneration by gene transduction and to identify optimal conditions for plasmid DNA delivery at bone defect sites. We focused on carrier substances and compared the efficiencies of two collagen derivatives, atelocollagen, and gelatin hydrogel, as substrates for plasmid DNA delivery in vivo. To assess the efficiencies of these substrates, we examined exogenous expression of green fluorescence protein (GFP) by fluorescence microscopy, polymerase chain reaction, and immunohistochemistry. GFP expression at the bone defect site was higher when gelatin hydrogel was used as a substrate to deliver plasmids than when atelocollagen was used. Moreover, the gelatin hydrogel was almost completely absorbed at the defect site, whereas some atelocollagen remained. When a plasmid harboring bone morphogenic protein 2 was delivered with the substrate to bony defect sites, more new bone formation was observed in the gelatin group than in the atelocollagen group. These results suggested that the gelatin hydrogel was more efficient than atelocollagen as a substrate for local gene delivery and may be a superior material for induction of bone regeneration.
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Affiliation(s)
- K Komatsu
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
| | - T Shibata
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
| | - A Shimada
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
| | - H Ideno
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
| | - K Nakashima
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
| | - Y Tabata
- b Department of Biomaterials, Field of Tissue Engineering, Institute for Frontier Medical Sciences , Kyoto University , Kyoto , Japan
| | - A Nifuji
- a Department of Pharmacology , Tsurumi University School of Dental Medicine , Yokohama , Japan
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Nagata Y, Watanabe T, Nagasaka K, Yamada M, Saito M, Yazaki T, Komatsu K, Sano M, Asano K, Ando C, Taniuchi N. Clinical Search for Undiagnosed Mesenteric Phlebosclerosis at Outpatient Departments Specializing in Herbal (Kampo) Medicine. Intern Med 2016; 55:573-81. [PMID: 26984071 DOI: 10.2169/internalmedicine.55.5642] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
OBJECTIVE Mesenteric phlebosclerosis (MP) is a disease characterized by calcification of the mesenteric vein, which causes chronic mesenteric ischemia. Recently, the long-term intake of gardenia fruit ('Sanshishi' in Japanese) has been attracting attention as a possible cause. Usually, only advanced, severe MP cases get reported. However, we suspected that some latent cases of this disease may exist. We performed this study in order to determine the prediagnostic cases at our outpatient departments of herbal (Kampo) medicine, with particular attention paid to the initial changes, such as any slight color change of the colon, as shown in colonoscopy. METHODS We recommend colonoscopy and computed tomography (CT) scans for patients with a long-term history of taking herbal medicines containing gardenia fruit. Clinical examinations were performed upon receiving patients' consent from December 2013 to November 2014. RESULTS Of the 103 patients who took gardenia fruit long-term, 29 agreed to be checked for MP. 14 patients underwent colonoscopy. Four patients were confirmed to have MP due to the presence of fibrotic deposition of the colonic membrane on histological inspection. Twenty-one patients underwent abdominal CT screening. Characteristic calcification of the mesenteric vein was observed on CT scans in 2 patients. All 4 MP patients took Kampo formulas containing gardenia fruit for more than 6.8 years. The other patients did not develop MP, despite long-term gardenia fruit intake. CONCLUSION We detected the latent and undiagnosed MP cases. All diagnoses were made while paying careful attention to any slight changes in colonoscopy and CT scans.
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Affiliation(s)
- Yutaka Nagata
- Department of Oriental Traditional Medical Center, Suwa Central Hospital, Japan
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Komatsu K, Ozaki A, Iwasaki K, Matsumoto S. Bilateral Vertebral Artery Aneurysms at the Atlantoaxial Joint Level Causing Recurrent Stroke. Intern Med 2016; 55:3365-3368. [PMID: 27853085 PMCID: PMC5173510 DOI: 10.2169/internalmedicine.55.6956] [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] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Vertebral arteries (VAs) are vulnerable to mechanical stress between the atlas and axis, and subsequent VA dissection can cause posterior circulation infarction. We herein present a rare but informative case of bilateral VA aneurysms that caused recurrent stroke. The localization of the aneurysms and dynamic angiography with neck movement suggested a pathogenesis related to chronic mechanical injury of the VAs, though no skeletal abnormality was detected. The recurrences stopped and both aneurysms shrank after neck collar fixation and after the combination use of antithrombotics. For patients with posterior circulation infarction of unknown origin, a careful evaluation of VAs with physicians paying special attention to the atlantoaxial joint level is therefore recommended.
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Affiliation(s)
- Kenichi Komatsu
- Department of Neurology, Kitano Hospital, The Tazuke Kofukai Medical Research Institute, Japan
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Hennessy TW, Bruden D, Castrodale L, Komatsu K, Erhart LM, Thompson D, Bradley K, O'Leary DR, McLaughlin J, Landen M. A case-control study of risk factors for death from 2009 pandemic influenza A(H1N1): is American Indian racial status an independent risk factor? Epidemiol Infect 2016; 144:315-24. [PMID: 26118767 PMCID: PMC5222627 DOI: 10.1017/s0950268815001211] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Historically, American Indian/Alaska Native (AI/AN) populations have suffered excess morbidity and mortality from influenza. We investigated the risk factors for death from 2009 pandemic influenza A(H1N1) in persons residing in five states with substantial AI/AN populations. We conducted a case-control investigation using pandemic influenza fatalities from 2009 in Alaska, Arizona, New Mexico, Oklahoma and Wyoming. Controls were outpatients with influenza. We reviewed medical records and interviewed case proxies and controls. We used multiple imputation to predict missing data and multivariable conditional logistic regression to determine risk factors. We included 145 fatal cases and 236 controls; 22% of cases were AI/AN. Risk factors (P 45 years vs. <18 years], pre-existing medical conditions (mOR 7·1), smoking (mOR 3·0), delayed receipt of antivirals (mOR 6·5), and barriers to healthcare access (mOR 5·3). AI/AN race was not significantly associated with death. The increased influenza mortality in AI/AN individuals was due to factors other than racial status. Prevention of influenza deaths should focus on modifiable factors (smoking, early antiviral use, access to care) and identifying high-risk persons for immunization and prompt medical attention.
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Affiliation(s)
- T W Hennessy
- Arctic Investigations Program,US Centers for Disease Control and Prevention (CDC),Anchorage,AK,USA
| | - D Bruden
- Arctic Investigations Program,US Centers for Disease Control and Prevention (CDC),Anchorage,AK,USA
| | - L Castrodale
- State of Alaska,Division of Public Health,Anchorage,AK,USA
| | - K Komatsu
- Arizona Department of Health Services,Phoenix,AZ,USA
| | - L M Erhart
- Arizona Department of Health Services,Phoenix,AZ,USA
| | - D Thompson
- New Mexico Department of Health,Santa Fe,NM,USA
| | - K Bradley
- Oklahoma State Department of Health,Oklahoma City,OK,USA
| | - D R O'Leary
- Wyoming Department of Health,Cheyenne,WY,USA
| | - J McLaughlin
- State of Alaska,Division of Public Health,Anchorage,AK,USA
| | - M Landen
- New Mexico Department of Health,Santa Fe,NM,USA
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Inoko M, Kimura Y, Funasako M, Tatsuno K, Komatsu K, Matsuzaki N, Matsuyama TA. [A Case of Acute Myocarditis with Encephalopathy]. Nihon Naika Gakkai Zasshi 2015; 104:2241-2254. [PMID: 30162642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
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Hennessy T, Bruden D, Castrodale L, McLaughlin JB, Komatsu K, Laura E, O'Leary D, Bradley K, Thompson D, Landen M. Risk Factors for Death from 2009 Pandemic Influenza A (H1N1): Is American Indian/Alaska Native Racial Status an Independent Risk Factor? Int J Epidemiol 2015. [DOI: 10.1093/ije/dyv097.011] [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: 11/13/2022] Open
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Kawakami N, Komatsu K, Yamashita H, Uemura K, Oka N, Takashima H, Takahashi R. [A novel mutation in glycyl-tRNA synthetase caused Charcot-Marie-Tooth disease type 2D with facial and respiratory muscle involvement]. Rinsho Shinkeigaku 2015; 54:911-5. [PMID: 25420567 DOI: 10.5692/clinicalneurol.54.911] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Charcot-Marie-Tooth disease (CMT) is a hereditary peripheral neuropathy; symptoms include distal wasting and weakness, usually with some sensory impairment. The clinical course is typically benign and the disease is not life threatening; however, in some cases, severe phenotypes include serious respiratory distress. CASE REPORT Here we describe a 45-year-old woman with a long course of motor-dominant neuropathy. Distal weakness appeared in childhood and became worse with age. After a diagnosis of CMT type 2, the symptoms progressed, and in her fourth decade, facial and respiratory muscle weakness appeared, ultimately requiring non-invasive mechanical ventilation. There was no family history of CMT. Comprehensive analysis of known CMT-related genes revealed a novel heterozygous c.815T>A, p.L218Q mutation in glycyl-tRNA synthetase (GARS), a causative gene for both CMT type 2D (CMT2D) and distal spinal muscular atrophy type V (dSMA-V). This mutation was considered pathogenic based on molecular evidence; notably, it was unique in that all other reported GARS mutations associated with severe phenotypes are located in an anticodon-binding domain, while in this case in an apparently non-functional region of the GARS gene. Not a simple loss-of-function mechanism, but rather gain-of-function mechanisms have also been reported in GARS mutations. This case provided useful information for understanding the mechanism of CMT2D/dSMA-V.
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Sato Y, Shinka T, Nozawa S, Yoshiike M, Koh E, Kanaya J, Namiki M, Matsumiya K, Tsujimura A, Komatsu K, Itoh N, Eguchi J, Yamauchi A, Iwamoto T, Nakahori Y. Y chromosome haplogroup D2a1 is significantly associated with high levels of luteinizing hormone in Japanese men. Andrology 2015; 3:520-5. [PMID: 25858496 DOI: 10.1111/andr.12026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Revised: 02/04/2015] [Accepted: 02/09/2015] [Indexed: 01/12/2023]
Abstract
The association between the Y chromosome haplogroup D2 and risk of azoospermia and low sperm motility has been previously studied, and it was indicated that haplogroups DE (YAP lineage) are associated with prostate cancer risk in Japanese males. Our assumption had been that Y chromosome haplogroups may be associated with sex hormone levels, because sex hormones have been deemed responsible for spermatogenesis and carcinogenesis. In this study, we assessed the association between Y chromosome haplogroups and sex hormone levels, including those of testosterone, sex hormone-binding globulin (SHBG), follicle-stimulating hormone (FSH), luteinizing hormone (LH), inhibin-B, and calculated free testosterone (cFT), in 901 young men from the general Japanese population (cohort 1) and 786 Japanese men of proven fertility (cohort 2). We found that the haplogroup D2a1 was significantly associated with high LH levels in a combined analysis involving two cohorts (β = 0.068, SE = 0.025, p = 0.0075), following correction for multiple testing. To date, this result is the first evidence that implicates Y chromosome haplogroups in an association with sex hormone levels.
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Affiliation(s)
- Y Sato
- Department of Pharmaceutical Information Science, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan.,Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T Shinka
- Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - S Nozawa
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - M Yoshiike
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - E Koh
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - J Kanaya
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - M Namiki
- Department of Urology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - K Matsumiya
- Department of Urology, Osaka Police Hospital, Osaka, Japan
| | - A Tsujimura
- Faculty of Medicine, Department of Urology, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - K Komatsu
- Department of Urology, Harasanshinkai Hospital, Fukuoka, Japan
| | - N Itoh
- Department of Urology, Sapporo Medical University, Sapporo, Japan
| | - J Eguchi
- Department of Urology, Nagasaki University, Nagasaki, Japan
| | - A Yamauchi
- Department of Pharmaceutical Information Science, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
| | - T Iwamoto
- Department of Urology, St. Marianna University School of Medicine, Kawasaki, Japan.,Center for Infertility and IVF, International University of Health and Welfare Hospital, Nasushiobara, Tochigi, Japan
| | - Y Nakahori
- Department of Human Genetics and Public Health, Institute of Health Biosciences, The University of Tokushima Graduate School, Tokushima, Japan
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Yamada E, Inamori M, Watanabe S, Sato T, Tagri M, Uchida E, Tanida E, Izumi M, Takeshita K, Fujisawa N, Komatsu K, Hamanaka J, Kanesaki A, Matsuhashi N, Nakajima A. Constipation is not associated with colonic diverticula: a multicenter study in Japan. Neurogastroenterol Motil 2015; 27:333-8. [PMID: 25469640 DOI: 10.1111/nmo.12478] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [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: 09/15/2014] [Accepted: 11/01/2014] [Indexed: 01/06/2023]
Abstract
BACKGROUND The association of diverticula with bowel habits is unclear. We therefore analyzed the association between diverticula and bowel habits in over 1000 Japanese individuals. METHODS Japanese subjects who underwent total colonoscopies at seven centers in Japan from June to September 2013 were analyzed. Bowel habits were evaluated using the Gastrointestinal Symptom Rating Scale, and stool form was assessed using a part of the Bristol Scale and Rome ΙΙΙ criteria. Diverticula were diagnosed by colonoscopy with a transparent soft-short hood. KEY RESULTS The study evaluated 1066 subjects, 648 males and 418 females (ratio, 1.55 : 1), of mean age 63.9 ± 13.0 years. After adjusting for age and sex, the presence of constipation was associated with a significantly reduced likelihood of diverticula (odds ratio [OR] = 0.70, 95% confidence interval [CI] 0.52-0.93). When assessed according to the location of diverticula, the presence of constipation was associated with a significantly decreased likelihood of left-sided (OR = 0.39, 95% CI 0.16-0.93), but not right-sided (OR = 1.10, 95% CI 0.48-2.53), diverticula. Furthermore, stool form was unrelated with the presence or absence of diverticula. CONCLUSIONS & INFERENCES The wide-spread hypothesis that constipation was associated with colonic diverticula was not supported. Rather, we found that the absence of diverticula was associated with constipation, suggesting the need to reassess the etiology of colonic diverticula.
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Affiliation(s)
- E Yamada
- Gastroenterology Division, Saiseikai Yokohama-shi Nanbu Hospital, Yokohama, Japan
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50
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Shimura T, Kobayashi J, Komatsu K, Kunugita N. DNA damage signaling guards against perturbation of cyclin D1 expression triggered by low-dose long-term fractionated radiation. Oncogenesis 2014; 3:e132. [PMID: 25486524 PMCID: PMC4275562 DOI: 10.1038/oncsis.2014.48] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/24/2014] [Accepted: 11/02/2014] [Indexed: 12/20/2022] Open
Abstract
Cyclin D1 expression is precisely controlled during cell-cycle progression. However, repeated exposure to low-dose fractionated radiation (FR) abrogates cell cycle-dependent cyclin D1 degradation by constitutive activation of AKT survival signaling in normal human fibroblasts. The resulting abnormal nuclear cyclin D1 accumulation induces defects in DNA replication and resulting DNA double-strand breaks, and is associated with induction of genomic instability in low-dose irradiated cells. Here, we investigated the role of DNA damage signaling against such perturbed cell-cycle control of cyclin D1 expression. Nuclear cyclin D1 accumulation was induced within 7 days after low-dose FR (0.01 Gy or 0.05 Gy per fraction) in ATM-deficient cells (AT5BIVA), but appeared later in AT5BIVA cells harboring human ATM cDNA. Thus, ATM prevents abnormal nuclear cyclin D1 accumulation at early time points after low-dose FR. We further demonstrated that ATM-mediated downregulation of protein phosphatase 2A activity caused activation of the AKT/cyclin D1 pathway after long-term FR. Perturbation of cyclin D1 expression induced Rad51 foci that indicate homologous recombination repair (HRR) in control cells, while ATM- and NBS1-deficient cells (GM7166) failed to induce Rad51 foci after long-term low-dose FR. After 21 days of FR, NBS1- and ATM-deficient cells showed a decrease in nuclear cyclin D1-positive cells, and an increase in apoptotic cells. Similarly, inhibition of ATM with KU55933 abrogated nuclear cyclin D1 accumulation by induction of apoptosis in ATM-complemented cells exposed to low-dose FR. In conclusion, we here demonstrate that ATM is involved in controlling cyclin D1 levels after low-dose FR. DNA damage signaling mitigates the harmful effects of low-dose long-term FR by suppression of cell death induced by perturbation of cyclin D1 expression.
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Affiliation(s)
- T Shimura
- Department of Environmental Health, National Institute of Public Health, Saitama, Japan
| | - J Kobayashi
- Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - K Komatsu
- Department of Genome Dynamics, Radiation Biology Center, Kyoto University, Kyoto, Japan
| | - N Kunugita
- Department of Environmental Health, National Institute of Public Health, Saitama, Japan
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