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Ping Y, Ohata K, Kikushima K, Sakamoto T, Islam A, Xu L, Zhang H, Chen B, Yan J, Eto F, Nakane C, Takao K, Miyakawa T, Kabashima K, Watanabe M, Kahyo T, Yao I, Fukuda A, Ikegami K, Konishi Y, Setou M. Tubulin Polyglutamylation by TTLL1 and TTLL7 Regulate Glutamate Concentration in the Mice Brain. Biomolecules 2023; 13:biom13050784. [PMID: 37238654 DOI: 10.3390/biom13050784] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/27/2023] [Accepted: 04/30/2023] [Indexed: 05/28/2023] Open
Abstract
As an important neurotransmitter, glutamate acts in over 90% of excitatory synapses in the human brain. Its metabolic pathway is complicated, and the glutamate pool in neurons has not been fully elucidated. Tubulin polyglutamylation in the brain is mainly mediated by two tubulin tyrosine ligase-like (TTLL) proteins, TTLL1 and TTLL7, which have been indicated to be important for neuronal polarity. In this study, we constructed pure lines of Ttll1 and Ttll7 knockout mice. Ttll knockout mice showed several abnormal behaviors. Matrix-assisted laser desorption/ionization (MALDI) Imaging mass spectrometry (IMS) analyses of these brains showed increases in glutamate, suggesting that tubulin polyglutamylation by these TTLLs acts as a pool of glutamate in neurons and modulates some other amino acids related to glutamate.
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Affiliation(s)
- Yashuang Ping
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Kenji Ohata
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Kenji Kikushima
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Takumi Sakamoto
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Ariful Islam
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Lili Xu
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Hengsen Zhang
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Bin Chen
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Jing Yan
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Fumihiro Eto
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Chiho Nakane
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Keizo Takao
- Department of Behavioral Physiology, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama-shi, Toyama 930-0194, Japan
- Genetic Engineering and Functional Genomics Unit, Frontier Technology Center, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
| | - Tsuyoshi Miyakawa
- Genetic Engineering and Functional Genomics Unit, Frontier Technology Center, Graduate School of Medicine, Kyoto University, Kyoto 606-8501, Japan
- Institute for Comprehensive Medical Science Division of Systems Medicine, Fujita Health University, Aichi 470-1192, Japan
| | - Katsuya Kabashima
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Miho Watanabe
- Department of Neurophysiology, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Tomoaki Kahyo
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Ikuko Yao
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Biomedical Sciences, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen Uegahara, Sanda, Hyogo 669-1330, Japan
| | - Atsuo Fukuda
- Department of Neurophysiology, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Koji Ikegami
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Anatomy and Developmental Biology, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Hiroshima 734-8553, Japan
| | - Yoshiyuki Konishi
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Applied Chemistry and Biotechnology, University of Fukui, 3-9-1 Bunkyo, Fukui-shi, Fukui 910-8507, Japan
| | - Mitsutoshi Setou
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
- Department of Systems Molecular Anatomy, Institute for Medical Photonics Research, Preeminent Medical Photonics Education & Research Center, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
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Imanaka C, Shimada S, Ito S, Kamada M, Iguchi T, Konishi Y. A model for generating differences in microtubules between axonal branches depending on the distance from terminals. Brain Res 2023; 1799:148166. [PMID: 36402177 DOI: 10.1016/j.brainres.2022.148166] [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] [Received: 06/22/2022] [Revised: 09/11/2022] [Accepted: 11/13/2022] [Indexed: 11/18/2022]
Abstract
In the remodeling of axonal arbor, the growth and retraction of branches are differentially regulated within a single axon. Although cell-autonomously generated differences in microtubule (MT) turnover are thought to be involved in selective branch regulation, the cellular system whereby neurons generate differences of MTs between axonal branches has not been clarified. Because MT turnover tends to be slower in longer branches compared with neighboring shorter branches, feedback regulation depending on branch length is thought to be involved. In the present study, we generated a model of MT lifetime in axonal terminal branches by adapting a length-dependent model in which parameters for MT dynamics were constant in the arbor. The model predicted that differences in MT lifetime between neighboring branches could be generated depending on the distance from terminals. In addition, the following points were predicted. Firstly, destabilization of MTs throughout the arbor decreased the differences in MT lifetime between branches. Secondly, differences of MT lifetime existed even before MTs entered the branch point. In axonal MTs in primary neurons, treatment with a low concentration of nocodazole significantly decreased the differences of detyrosination (deTyr) and tyrosination (Tyr) of tubulins, indicators of MT turnover. Expansion microscopy of the axonal shaft before the branch point revealed differences in deTyr/Tyr modification on MTs. Our model recapitulates the differences in MT turnover between branches and provides a feedback mechanism for MT regulation that depends on the axonal arbor geometry.
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Affiliation(s)
- Chiaki Imanaka
- Department of Applied Chemistry and Biotechnology, Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
| | - Satoshi Shimada
- Department of Human and Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
| | - Shino Ito
- Department of Applied Chemistry and Biotechnology, Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
| | - Marina Kamada
- Department of Applied Chemistry and Biotechnology, Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
| | - Tokuichi Iguchi
- Department of Applied Chemistry and Biotechnology, Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan; Department of Nursing, Faculty of Health Science, Fukui Health Science University, Fukui 910-3190, Japan
| | - Yoshiyuki Konishi
- Department of Applied Chemistry and Biotechnology, Artificial Intelligence Systems, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan; Life Science Innovation Center, University of Fukui, Fukui 910-8507, Japan.
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Matsumoto N, Hori I, Kajita MK, Murase T, Nakamura W, Tsuji T, Miyake S, Inatani M, Konishi Y. Intermitochondrial signaling regulates the uniform distribution of stationary mitochondria in axons. Mol Cell Neurosci 2022; 119:103704. [DOI: 10.1016/j.mcn.2022.103704] [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] [Received: 09/01/2021] [Revised: 12/27/2021] [Accepted: 01/31/2022] [Indexed: 10/19/2022] Open
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Horisawa S, Yamaguchi T, Abe K, Hori H, Fukui A, Iijima M, Sumi M, Hodotsuka K, Konishi Y, Kawamata T, Taira T. Magnetic Resonance-Guided Focused Ultrasound Thalamotomy for Focal Hand Dystonia: A Pilot Study. Mov Disord 2021; 36:1955-1959. [PMID: 34050695 PMCID: PMC8453941 DOI: 10.1002/mds.28613] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Revised: 03/06/2021] [Accepted: 03/26/2021] [Indexed: 11/26/2022] Open
Abstract
Background The efficacy of magnetic resonance‐guided focused ultrasound (MRgFUS) thalamotomy for the treatment of focal hand dystonia (FHD) is not well known. Objective We aimed to prospectively investigate the efficacy of MRgFUS thalamotomy for the treatment of FHD. Methods We performed MRgFUS thalamotomy of the ventro‐oral (Vo) nucleus in 10 patients with FHD. We evaluated the scores of the Writer's Cramp Rating Scale (WCRS, 0–30; higher scores indicating greater severity), Tubiana Musician's Dystonia Scale (TMDS, 0–5; lower scores indicating greater severity), and Arm Dystonia Disability Scale (ADDS, 0%–100%; lower scores indicating greater disability) at baseline and 3 and 12 months post‐treatment. Results WCRS, TMDS, and ADDS scores significantly improved from 6.3 ± 2.7, 1.4 ± 0.5, and 58.7% ± 14.3% at baseline to 1.6 ± 3.1 (P = 0.011), 5.0 ± 0 (P = 0.0001), and 81.6% ± 22.9% (P = 0.0229) at 12 months, respectively. There was one prolonged case of dysarthria at 12 months. Conclusion We show that MRgFUS Vo‐thalamotomy significantly improved FHD. © 2021 The Authors. Movement Disorders published by Wiley Periodicals LLC on behalf of International Parkinson and Movement Disorder Society
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Affiliation(s)
- Shiro Horisawa
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Toshio Yamaguchi
- Department of Radiology, Shinyurigaoka General Hospital, Kanagawa, Japan
| | - Keiichi Abe
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroki Hori
- Department of Radiology, Shinyurigaoka General Hospital, Kanagawa, Japan
| | - Atsushi Fukui
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Mutsumi Iijima
- Department of Neurology, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Masatake Sumi
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Kenichi Hodotsuka
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoshiyuki Konishi
- Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering & Science, Graduate School of Medicine, Tokyo, Japan
| | - Takakazu Kawamata
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
| | - Takaomi Taira
- Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
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Abstract
The mass of residual tumors has previously been estimated using time-series records of the position of surgical instruments acquired from neurosurgical navigation systems (navigation log). This method has been shown to be useful for rapid evaluation of residual tumors during resection. However, quantitative analysis of the method’s reliability has not been sufficiently reported. The effect of poor log coverage is dominant in previous studies, in that it did not highlight other disturbance factors, such as intraoperative brain shift. We analyzed 25 patients with a high log-acquisition rate that was calculated by dividing the log-available time by the instrument-use time. We estimated the region of resection using the trajectory of surgical instrument that was extracted from the navigation log. We then calculated the residual tumor region and measured its volume as log-estimation residual tumor volume (RTV). We evaluated the correlation between the log-estimation RTV and the RTV in the post-resection magnetic resonance (MR) image. We also evaluated the accuracy of detecting the residual tumor mass using the estimated residual tumor region. The log-estimation RTV and the RTV in the post-resection MR image were significantly correlated (correlation coefficient = 0.960; P <0.001). The presence of patient-wise residual tumor mass was detected with a sensitivity of 81.8% and a specificity of 92.9%. The individual residual tumor mass was detected with a positive predictive value of 72%. Estimation of residual tumor with adequate log coverage appears to be a suitable method with a high reliability. This method can support rapid decision-making during resection.
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Affiliation(s)
- Hiroyuki Yamada
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University
| | - Takashi Maruyama
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,Department of Neurosurgery, Tokyo Women's Medical University
| | - Yoshiyuki Konishi
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University
| | - Ken Masamune
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University
| | - Yoshihiro Muragaki
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,Department of Neurosurgery, Tokyo Women's Medical University
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Hori H, Yamaguchi T, Konishi Y, Taira T, Muragaki Y. Correlation between fractional anisotropy changes in the targeted ventral intermediate nucleus and clinical outcome after transcranial MR-guided focused ultrasound thalamotomy for essential tremor: results of a pilot study. J Neurosurg 2020; 132:568-573. [PMID: 30771772 DOI: 10.3171/2018.10.jns18993] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 10/26/2018] [Indexed: 11/06/2022]
Abstract
OBJECTIVE This study evaluated changes of fractional anisotropy (FA) in the ventral intermediate nucleus (VIM) of the thalamus after transcranial MR-guided focused ultrasound (TcMRgFUS) thalamotomy and their associations with clinical outcome. METHODS Clinical and radiological data of 12 patients with medically refractory essential tremor (mean age 76.5 years) who underwent TcMRgFUS thalamotomy with VIM targeting were analyzed retrospectively. The Clinical Rating Scale for Tremor (CRST) score was calculated before and at 1 year after treatment. Measurements of the relative FA (rFA) values, defined as ratio of the FA value in the targeted VIM to the FA value in the contralateral VIM, were performed before thalamotomy, and 1 day and 1 year thereafter. RESULTS TcMRgFUS thalamotomy was well tolerated and no long-term complications were noted. At 1-year follow-up, 8 patients demonstrated relief of tremor (improvement group), whereas in 4 others persistent tremor was noted (recurrence group). In the entire cohort, mean rFA values in the targeted VIM before treatment, and at 1 day and 1 year after treatment, were 1.12 ± 0.15, 0.44 ± 0.13, and 0.82 ± 0.22, respectively (p < 0.001). rFA values were consistently higher in the recurrence group compared with the improvement group, and the difference reached statistical significance at 1 day (p < 0.05) and 1 year (p < 0.01) after treatment. There was a statistically significant (p < 0.01) positive correlation between rFA values in the targeted VIM at 1 day after thalamotomy and CRST score at 1 year after treatment. Receiver operating characteristic curve analysis revealed that the optimal cutoff value of rFA at 1 day after thalamotomy for prediction of symptomatic improvement at 1-year follow-up is 0.54. CONCLUSIONS TcMRgFUS thalamotomy results in significant decrease of rFA in the targeted VIM, at both 1 day and 1 year after treatment. Relative FA values at 1 day after treatment showed significant correlation with CRST score at 1-year follow-up. Therefore, FA may be considered a possible imaging biomarker for early prediction of clinical outcome after TcMRgFUS thalamotomy for essential tremor.
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Affiliation(s)
- Hiroki Hori
- 1Faculty of Advanced Techno-Surgery and.,3Department of Radiology and
| | - Toshio Yamaguchi
- 4Research Institute for Diagnostic Radiology, Shin-Yurigaoka General Hospital, Kawasaki, Kanagawa, Japan
| | | | - Takaomi Taira
- 2Department of Neurosurgery, Tokyo Women's Medical University, Tokyo; and
| | - Yoshihiro Muragaki
- 1Faculty of Advanced Techno-Surgery and.,2Department of Neurosurgery, Tokyo Women's Medical University, Tokyo; and
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Horisawa S, Yamaguchi T, Abe K, Hori H, Sumi M, Konishi Y, Taira T. A single case of MRI-guided focused ultrasound ventro-oral thalamotomy for musician's dystonia. J Neurosurg 2019; 131:384-386. [PMID: 30239322 DOI: 10.3171/2018.5.jns173125] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 05/10/2018] [Indexed: 11/06/2022]
Abstract
Musician's dystonia (MD) is a type of focal hand dystonia that develops only while playing musical instruments and interferes with skilled and fine movements. Lesioning of the ventro-oral (Vo) nucleus of the thalamus (Vo-thalamotomy) using radiofrequency can cause dramatic improvement in MD symptoms. Focused ultrasound (FUS) can make intracranial focal lesions without an incision. The authors used MRI-guided FUS (MRgFUS) to create a lesion on the Vo nucleus to treat a patient with MD. Tubiana's MD scale (TMDS) was used to evaluate the condition of musical play ranging from 1 to 5 (1: worst, 5: best). The patient was a 35-year-old right-handed man with involuntary flexion of the right second, third, and fourth fingers, which occurred while playing a classical guitar. Immediately after therapeutic sonications of FUS Vo-thalamotomy, there was dramatic improvement in the MD symptoms. The TMDS scores before; at 0 and 1 week after; and at 1, 3, 6, and 12 months after MRgFUS Vo-thalamotomy were 1, 4, 4, 5, 5, 5, and 5, respectively. No complications were observed. Focused ultrasound Vo-thalamotomy can be an effective treatment for MD.
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Affiliation(s)
- Shiro Horisawa
- 1Department of Neurosurgery, Tokyo Women's Medical University, Tokyo
| | - Toshio Yamaguchi
- 2Department of Radiology, Shin-Yurigaoka General Hospital, Kawasaki; and
| | - Keiichi Abe
- 1Department of Neurosurgery, Tokyo Women's Medical University, Tokyo
| | - Hiroki Hori
- 3Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering & Science, Graduate School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Masatake Sumi
- 1Department of Neurosurgery, Tokyo Women's Medical University, Tokyo
| | - Yoshiyuki Konishi
- 3Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering & Science, Graduate School of Medicine, Tokyo Women's Medical University, Tokyo, Japan
| | - Takaomi Taira
- 1Department of Neurosurgery, Tokyo Women's Medical University, Tokyo
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Hada Y, Iwamiya S, Hijikata S, Yoshitake T, Sato H, Konishi Y, Sakurai K, Azegami K, Hirao K. 5965Perimatrial inflammation measured by fluoine-18-fluorodeoxyglucose-positron emission tomography/computed tomography to predict new-onset atrial fibrillation. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Fluoine-18-fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) is a useful modality of inflammatory disease. Epicardial adipose tissue (EAT) contains abundant ganglionated plexi, therefore EAT inflammation may cause atrial arrhythmia, such as atrial premature contraction (APC) and atrial fibrillation (AF). Previous studies have shown that inflammatory activity of EAT has relation to the presence of AF. However, it is unknown whether EAT inflammation contributes to the occurrence of AF.
Methods
Out of 20720 examinees who underwent FDG-PET/CT for screening of cancer in the years 2012–2018, 151 (aged 65.6±12.0 years old, 62 females) had ambulatory electrocardiographic monitoring (Holter ECG) within a year and non-detection of AF. Standardized uptake value (SUV) was measured in fat adjacent to roof of left atrium (ROOF), atrioventricular groove (AV), left main coronary artery (LMT), and right ventricular blood pool (RV). In order to correct for blood pool activity, SUV of ROOF, AV, and LMT were divided by SUV of RV respectively, yielding target-to-background ratio (TBR). As regards to arterial inflammation, measurements were performed with SUV in ascending aorta (A-Ao) and in superior vena cava (SVC) as blood pool. In the same way, SUV of A-Ao was divided by SUV of SVC, yielding TBR.
Results
According to Holter ECG, APC≥100 beats per day was seen in 60 patients (Group A), but not in the other 91 (Group B). In Group A, TBR of ROOF, AV, and LMT were all significantly higher than Group B (p<0.001, p=0.004, and p=0.008, respectively). During a median follow-up of 179 days, new-onset AF was diagnosed in 7 patients (4 in Group A (6.7%), 3 in Group B (3.3%), p=0.046). There was significant difference in TBR of ROOF between patients with and without new-onset AF (p<0.001), but not in TBR of AV and LMT. In addition, no significant difference was observed in TBR of A-Ao between these two groups. In the Cox proportional hazard analysis, TBR of ROOF was found to be an independent predictor of new-onset AF (odds ratio 40.1, 95% confidence interval 6.05 to 265.9, p<0.001).
Conclusions
Although EAT inflammation evaluated by SUV is related to frequent APCs, only in fat adjacent to roof of left atrium is associated with and predicts future occurrence of AF. Arterial inflammation measured by SUV has no relation to atrial arrhythmia.
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Affiliation(s)
- Y Hada
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - S Iwamiya
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - S Hijikata
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - T Yoshitake
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - H Sato
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - Y Konishi
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - K Sakurai
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - K Azegami
- Shin-yurigaoka General Hospital, Cardiovascular Medicine, Kanagawa, Japan
| | - K Hirao
- Tokyo Medical and Dental University, cardiovascular medicine, Tokyo, Japan
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Horise Y, Maeda M, Konishi Y, Okamoto J, Ikuta S, Okamoto Y, Ishii H, Yoshizawa S, Umemura S, Ueyama T, Tamano S, Sofuni A, Takemae K, Masamune K, Iseki H, Nishiyama N, Kataoka K, Muragaki Y. Sonodynamic Therapy With Anticancer Micelles and High-Intensity Focused Ultrasound in Treatment of Canine Cancer. Front Pharmacol 2019; 10:545. [PMID: 31164823 PMCID: PMC6536587 DOI: 10.3389/fphar.2019.00545] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Accepted: 04/30/2019] [Indexed: 12/11/2022] Open
Abstract
Sonodynamic therapy (SDT) is a minimally invasive anticancer therapy involving a chemical sonosensitizer and high-intensity focused ultrasound (HIFU). SDT enables the reduction of drug dose and HIFU irradiation power compared to those of conventional monotherapies. In our previous study, mouse models of colon and pancreatic cancer were used to confirm the effectiveness of SDT vs. drug-only or HIFU-only therapy. To validate its usefulness, we performed a clinical trial of SDT using an anticancer micelle (NC-6300) and our HIFU system in four pet dogs with spontaneous tumors, including chondrosarcoma, osteosarcoma, hepatocellular cancer, and prostate cancer. The fact that no adverse events were observed, suggests the usefulness of SDT.
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Affiliation(s)
- Yuki Horise
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | | | - Yoshiyuki Konishi
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Jun Okamoto
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Soko Ikuta
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | | | | | - Shin Yoshizawa
- Department of Communications Engineering, Tohoku University, Sendai, Japan
| | | | - Tsuyoshi Ueyama
- Medical Business Department, DENSO Corporation, Nisshin, Japan
| | | | - Atsushi Sofuni
- Department of Gastroenterology and Hepatology, Tokyo Medical University Hospital, Tokyo, Japan
| | | | - Ken Masamune
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroshi Iseki
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Nobuhiro Nishiyama
- Polymer Chemistry Division, Tokyo Institute of Technology, Meguro, Japan
| | - Kazunori Kataoka
- Department of Materials Engineering, The University of Tokyo, Tokyo, Japan
| | - Yoshihiro Muragaki
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
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Konishi Y, Evered LA, Scott DA, Silbert BS. Postoperative cognitive dysfunction after sevoflurane or propofol general anaesthesia in combination with spinal anaesthesia for hip arthroplasty. Anaesth Intensive Care 2019; 46:596-600. [PMID: 30447669 DOI: 10.1177/0310057x1804600610] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [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
It is unknown if the type of general anaesthetic used for maintenance of anaesthesia affects the incidence of postoperative cognitive dysfunction (POCD). The aim of this study was to compare the incidence of POCD in patients administered either sevoflurane or propofol for maintenance of anaesthesia during total hip replacement surgery. Following administration of a spinal anaesthetic, patients received either sevoflurane (n=121) or propofol (n=171) at the discretion of the anaesthetist for maintenance of general anaesthesia to maintain the processed electroencephalogram (bispectral index, BIS) under 60. POCD was assessed postoperatively at day 7, three months, and 12 months using a neurocognitive test battery. There was no statistically significant difference between the incidence of POCD at any timepoint with sevoflurane compared to propofol. The mean BIS was significantly lower in the sevoflurane group than in the propofol group (mean BIS 44.3 [standard deviation, SD 7.5] in the sevoflurane group versus 53.7 [SD 8.1] in the propofol group, <i>P</i>=0.0001). However, there was no statistically significant association between intraoperative BIS level and the incidence of POCD at any timepoint. Our results suggest that the incidence of POCD is not strongly influenced by the type of anaesthesia used in elderly patients.
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Affiliation(s)
- Y Konishi
- Fellow, Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital, Melbourne, Victoria; Teikyo University School of Medicine, Tokyo, Japan
| | - L A Evered
- Associate Professor, Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital; Perioperative and Pain Medicine Unit, Melbourne Medical School, University of Melbourne; Melbourne, Victoria
| | - D A Scott
- Professor, Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital; Perioperative and Pain Medicine Unit, Melbourne Medical School, University of Melbourne, Melbourne, Victoria
| | - B S Silbert
- Associate Professor, Department of Anaesthesia and Acute Pain Medicine, St Vincent's Hospital; Perioperative and Pain Medicine Unit, Melbourne Medical School, University of Melbourne, Melbourne, Victoria
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Inami Y, Omura M, Kubota K, Konishi Y. Inhibition of glycogen synthase kinase-3 reduces extension of the axonal leading process by destabilizing microtubules in cerebellar granule neurons. Brain Res 2018; 1690:51-60. [DOI: 10.1016/j.brainres.2018.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Revised: 03/23/2018] [Accepted: 04/09/2018] [Indexed: 01/20/2023]
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13
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Igata R, Katsuki A, Kakeda S, Watanabe K, Igata N, Hori H, Konishi Y, Atake K, Kawasaki Y, Korogi Y, Yoshimura R. PCLO rs2522833-mediated gray matter volume reduction in patients with drug-naive, first-episode major depressive disorder. Transl Psychiatry 2017; 7:e1140. [PMID: 28556829 PMCID: PMC5534936 DOI: 10.1038/tp.2017.100] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2016] [Revised: 01/27/2017] [Accepted: 03/16/2017] [Indexed: 01/02/2023] Open
Abstract
Major depressive disorder (MDD) has been linked to differences in the volume of certain areas of the brain and to variants in the piccolo presynaptic cytomatrix protein (PCLO), but the relationship between PCLO and brain morphology has not been studied. A single-nucleotide polymorphism (SNP) in PCLO, rs2522833, is thought to affect protein stability and the activity of the hypothalamic-pituitary-adrenal axis. We investigated the relationship between cortical volume and this SNP in first-episode, drug-naive patients with MDD or healthy control subjects. Seventy-eight participants, including 30 patients with MDD and 48 healthy control subjects, were recruited via interview. PCLO rs2522833 genotyping and plasma cortisol assays were performed, and gray matter volume was estimated using structural magnetic resonance images. Among the individuals carrying the C-allele of PCLO rs2522833, the volume of the left temporal pole was significantly smaller in those with MDD than in healthy controls (family-wise error-corrected, P=0.003). No differences were detected in other brain regions. In addition, the C-carriers showed a larger volume reduction in the left temporal pole than those in the individuals with A/A genotype (P=0.0099). Plasma cortisol levels were significantly higher in MDD-affected C-carriers than in the healthy control C-carriers (12.76±6.10 vs 9.31±3.60 nm, P=0.045). We conclude that PCLO SNP rs2522833 is associated with a gray matter volume reduction in the left temporal pole in drug-naive, first-episode patients with MDD carrying the C-allele.
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Affiliation(s)
- R Igata
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - A Katsuki
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - S Kakeda
- Department of Radiology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - K Watanabe
- Department of Radiology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - N Igata
- Department of Radiology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - H Hori
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Y Konishi
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - K Atake
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Y Kawasaki
- Department of Environmental Oncology, Institute of Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Y Korogi
- Department of Radiology, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - R Yoshimura
- Department of Psychiatry, University of Occupational and Environmental Health, Kitakyushu, Japan,Department of Psychiatry, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishi-ku, Kitakyushu 8078555, Fukuoka, Japan. E-mail:
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14
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Konishi Y. Anterior cruciate ligament reconstruction does not induce further gamma loop abnormalities on the intact side of the quadriceps femoris: A longitudinal study. Scand J Med Sci Sports 2017; 28:196-202. [PMID: 28378501 DOI: 10.1111/sms.12894] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/31/2017] [Indexed: 01/20/2023]
Abstract
This study aimed to investigate the effect of surgery on the gamma loop of the quadriceps on the side with an intact knee in patients with anterior cruciate ligament (ACL) injuries. We compared longitudinally the response of alpha motor neurons to vibration stimulation of the quadriceps on the side with an intact knee before and after ACL reconstruction. To evaluate alpha motor neuron response, we measured the maximal knee extension strength and integrated electromyography of the vastus medialis, vastus lateralis, and rectus femoris. After obtaining pre-vibration data from each subject, vibration stimulation was applied to the infrapatellar tendon, and the same measurements were performed immediately after stimulation. The results of this study showed that the response to prolonged vibration stimulation on the intact side of the quadriceps did not differ pre- and post-surgery. As vibration stimuli normally elicit a decrease in alpha motor neuron activity in normal individuals, abnormal responses to prolonged vibration stimulation of the quadriceps on the side with an intact knee might be observed in patients with ACL injuries. The abnormality of the gamma loop of the quadriceps on the side with an intact knee was probably induced by the rupture. Based on these results, we conclude that surgery does not induce further gamma loop abnormalities on the intact side of the quadriceps.
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Affiliation(s)
- Y Konishi
- Department of Physical Education, National Defense Academy, yokosuka, Japan
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15
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Komasawa N, Kido H, Konishi Y, Minami T. Evaluation of non-specific symptoms after anaesthesia. Br J Anaesth 2017; 118:636-637. [PMID: 28403419 DOI: 10.1093/bja/aex062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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16
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Ikeno T, Konishi Y. Differential retraction of axonal arbor terminals mediated by microtubule and kinesin motor. Commun Integr Biol 2017. [PMCID: PMC5398204 DOI: 10.1080/19420889.2017.1288771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2022] Open
Affiliation(s)
- Tatsuki Ikeno
- Department of Human and Artificial Intelligence Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan
| | - Yoshiyuki Konishi
- Department of Human and Artificial Intelligence Systems, Graduate School of Engineering, University of Fukui, Fukui, Japan
- Department of Materials Science and Biotechnology, Faculty of Engineering, University of Fukui, Fukui, Japan
- Life Science Innovation Center, University of Fukui, Fukui, Japan
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Abstract
Quadriceps weakness is a notable problem following knee damage. Research has shown effectiveness of TENS in improving Quadriceps weakness associated with arthrogenic muscle inhibition. However, these studies were not focused upon short term delivery of TENS, nor did they examine the potential mechanism(s). The present study examined the effect of 25-30 s of TENS upon weakness induced temporarily by a prolonged vibration. Subjects performed eccentric MVCs under 2 conditions (TENS and no-TENS). First, MVC was measured at baseline. For the TENS condition, TENS was applied to each subject's knee joint during a second MVC measurement after vibration. For no-TENS condition, TENS was not applied during the 2nd MVC measurement. MVC between pre-and post-vibration stimulation were compared across the 2 conditions. The results showed that MVC and EMG of TENS-condition was larger than that of no-TENS condition. Our results suggest that TENS could partially restore α-motoneuron activation, despite the induced dysfunctional γ-loop. These results suggest that mechanisms independent of the γ-loop such as a direct facilitation of the QF α-motoneuron pool by a long latency spinal-reflex and/or supraspinal mechanisms appear more likely to be responsible. The findings provide further support for utilizing TENS, even when γ-loop dysfunction is present following joint damage.
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Affiliation(s)
- Y Konishi
- Department of Physical Education, National Defense Academy, Kanagawa, Japan
| | - P J McNair
- Health and Rehabilitation Research Institute, Auckland University of Technology, Auckland, New Zealand
| | - D A Rice
- Health and Rehabilitation Research Institute, Auckland University of Technology, Auckland, New Zealand
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Uryu D, Tamaru T, Suzuki A, Sakai R, Konishi Y. Study of local intracellular signals regulating axonal morphogenesis using a microfluidic device. Sci Technol Adv Mater 2016; 17:691-697. [PMID: 27877916 PMCID: PMC5101991 DOI: 10.1080/14686996.2016.1241131] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2016] [Revised: 09/20/2016] [Accepted: 09/22/2016] [Indexed: 06/06/2023]
Abstract
The establishment and maintenance of axonal patterning is crucial for neuronal function. To identify the molecular systems that operate locally to control axonal structure, it is important to manipulate molecular functions in restricted subcellular areas for a long period of time. Microfluidic devices can be powerful tools for such purposes. In this study, we demonstrate the application of a microfluidic device to clarify the function of local Ca2+ signals in axons. Membrane depolarization significantly induced axonal branch-extension in cultured cerebellar granule neurons (CGNs). Local application of nifedipine using a polydimethylsiloxane (PDMS)-based microfluidic device demonstrated that Ca2+ entry from the axonal region via L-type voltage-dependent calcium channels (L-VDCC) is required for branch extension. Furthermore, we developed a method for locally controlling protein levels by combining genetic techniques and use of a microfluidic culture system. A vector for enhanced green fluorescent protein (EGFP) fused to a destabilizing domain derived from E. coli dihydrofolate reductase (ecDHFR) is introduced in neurons by electroporation. By local application of the DHFR ligand, trimethoprim (TMP) using a microfluidic device, we were able to manipulate differentially the level of fusion protein between axons and somatodendrites. The present study revealed the effectiveness of microfluidic devices to address fundamental biological issues at subcellular levels, and the possibility of their development in combination with molecular techniques.
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Affiliation(s)
- Daiki Uryu
- Department of Human and Artificial Intelligent Systems, Faculty of Engineering, University of Fukui, Fukui, Japan
| | - Tomohiro Tamaru
- Department of Human and Artificial Intelligent Systems, Faculty of Engineering, University of Fukui, Fukui, Japan
| | - Azusa Suzuki
- Department of Human and Artificial Intelligent Systems, Faculty of Engineering, University of Fukui, Fukui, Japan
| | - Rie Sakai
- Department of Human and Artificial Intelligent Systems, Faculty of Engineering, University of Fukui, Fukui, Japan
| | - Yoshiyuki Konishi
- Department of Human and Artificial Intelligent Systems, Faculty of Engineering, University of Fukui, Fukui, Japan
- Department of Materials Science and Biotechnology, Faculty of Engineering, University of Fukui, Fukui, Japan
- Life Science Innovation Center, University of Fukui, Fukui, Japan
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20
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Seno T, Ikeno T, Mennya K, Kurishita M, Sakae N, Sato M, Takada H, Konishi Y. Kinesin-1 sorting in axons controls the differential retraction of arbor terminals. J Cell Sci 2016; 129:3499-510. [PMID: 27505885 DOI: 10.1242/jcs.183806] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Accepted: 08/02/2016] [Indexed: 01/13/2023] Open
Abstract
The ability of neurons to generate multiple arbor terminals from a single axon is crucial for establishing proper neuronal wiring. Although growth and retraction of arbor terminals are differentially regulated within the axon, the mechanisms by which neurons locally control their structure remain largely unknown. In the present study, we found that the kinesin-1 (Kif5 proteins) head domain (K5H) preferentially marks a subset of arbor terminals. Time-lapse imaging clarified that these arbor terminals were more stable than others, because of a low retraction rate. Local inhibition of kinesin-1 in the arbor terminal by chromophore-assisted light inactivation (CALI) enhanced the retraction rate. The microtubule turnover was locally regulated depending on the length from the branching point to the terminal end, but did not directly correlate with the presence of K5H. By contrast, F-actin signal values in arbor terminals correlated spatiotemporally with K5H, and inhibition of actin turnover prevented retraction. Results from the present study reveal a new system mediated by kinesin-1 sorting in axons that differentially controls stability of arbor terminals.
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Affiliation(s)
- Takeshi Seno
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Tatsuki Ikeno
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Kousuke Mennya
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Masayuki Kurishita
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Narumi Sakae
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Makoto Sato
- Life Science Innovation Center, University of Fukui, Fukui 910-8507, Japan Research Center for Child Mental Development, University of Fukui, Fukui 910-1193, Japan Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Osaka 565-0871, Japan United Graduate School of Child Development, Osaka University, Kanazawa University-Hamamatsu University School of Medicine, Chiba University and University of Fukui, Osaka University, Osaka 565-0871, Japan
| | - Hiroki Takada
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan
| | - Yoshiyuki Konishi
- Department of Human and Artificial Intelligence Systems, University of Fukui, Fukui 910-8507, Japan Life Science Innovation Center, University of Fukui, Fukui 910-8507, Japan Department of Materials Science and Biotechnology, Faculty of Engineering, University of Fukui, Fukui 910-8507, Japan
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Abstract
The vasodilation mode and degree of the invasion caused by balloon angioplasty were experimentally examined. Assessment by light microscopy and scanning electron microscopy demonstrated that the invasion to the implanted arterial wall, taken from a patient who died from vasospasm, was minimized by the use of the balloon under the condition at 1 atm, 10 times for 10 seconds. Furthermore, we applied angioplasty to eight patients who developed severe vasospasm after subarachnoid haemorrhage, and five showed improvement in neurophysiological (transcranial Doppler sonography), neuroradiological, and clinical examinations. In addition, blood vessels obtained from one patient who died 10 days after angioplasty, demonstrated similar findings to those of the experimental studies. It can be said that angioplasty will be one of the effective therapeutic methods to manage vasospasm when it is applied under the conditions mentioned above.
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Affiliation(s)
- Y Konishi
- Department of Neurosurgery, Kyorin University School of Medicine, Tokyo, Japan
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22
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Konno A, Ikegami K, Konishi Y, Yang HJ, Abe M, Yamazaki M, Sakimura K, Yao I, Shiba K, Inaba K, Setou M. Ttll9-/- mice sperm flagella show shortening of doublet 7, reduction of doublet 5 polyglutamylation and a stall in beating. J Cell Sci 2016; 129:2757-66. [PMID: 27257088 DOI: 10.1242/jcs.185983] [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] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2016] [Accepted: 05/31/2016] [Indexed: 12/27/2022] Open
Abstract
Nine outer doublet microtubules in axonemes of flagella and cilia are heterogeneous in structure and biochemical properties. In mammalian sperm flagella, one of the factors to generate the heterogeneity is tubulin polyglutamylation, although the importance of the heterogeneous modification is unclear. Here, we show that a tubulin polyglutamylase Ttll9 deficiency (Ttll9(-/-)) causes a unique set of phenotypes related to doublet heterogeneity. Ttll9(-/-) sperm axonemes had frequent loss of a doublet and reduced polyglutamylation. Intriguingly, the doublet loss selectively occurred at the distal region of doublet 7, and reduced polyglutamylation was observed preferentially on doublet 5. Ttll9(-/-) spermatozoa showed aberrant flagellar beating, characterized by frequent stalls after anti-hook bending. This abnormal motility could be attributed to the reduction of polyglutamylation on doublet 5, which probably occurred at a position involved in the switching of bending. These results indicate that mammalian Ttll9 plays essential roles in maintaining the normal structure and beating pattern of sperm flagella by establishing normal heterogeneous polyglutamylation patterns.
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Affiliation(s)
- Alu Konno
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan
| | - Koji Ikegami
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan
| | - Yoshiyuki Konishi
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan
| | - Hyun-Jeong Yang
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 9518585, Japan
| | - Maya Yamazaki
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 9518585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, Niigata 9518585, Japan
| | - Ikuko Yao
- Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan
| | - Kogiku Shiba
- Shimoda Marine Research Center, University of Tsukuba, Shimoda, Shizuoka 4150025, Japan
| | - Kazuo Inaba
- Shimoda Marine Research Center, University of Tsukuba, Shimoda, Shizuoka 4150025, Japan
| | - Mitsutoshi Setou
- Department of Cellular and Molecular Anatomy, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan Preeminent Medical Photonics Education & Research Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan International Mass Imaging Center, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka 4313192, Japan Department of Anatomy, The University of Hong Kong, 6/F, William MW Mong Block, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China Division of Neural Systematics, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 4440867, Japan Riken Center for Molecular Imaging Science, Kobe, Hyogo 6500047, Japan
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23
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Miyoshi K, Konishi Y, Kurosaki T, Otani S, Sugimoto S, Yamane M, Miyoshi S, Oto T. Not Donor’s but Recipient’s Airway Organisms Are Relevant to Post-Lung Transplant Pneumonia. J Heart Lung Transplant 2016. [DOI: 10.1016/j.healun.2016.01.880] [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: 10/22/2022] Open
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Affiliation(s)
- Y Konishi
- a Department of Obstetrics and Gynecology , Nakadori General Hospital , Akita , Japan
| | - S Kagabu
- a Department of Obstetrics and Gynecology , Nakadori General Hospital , Akita , Japan
| | - K Mori
- a Department of Obstetrics and Gynecology , Nakadori General Hospital , Akita , Japan
| | - M Kato
- a Department of Obstetrics and Gynecology , Nakadori General Hospital , Akita , Japan
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25
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Saito T, Muragaki Y, Maruyama T, Tamura M, Nitta M, Tsuzuki S, Konishi Y, Kamata K, Kinno R, Sakai KL, Iseki H, Kawamata T. Difficulty in identification of the frontal language area in patients with dominant frontal gliomas that involve the pars triangularis. J Neurosurg 2016; 125:803-811. [PMID: 26799301 DOI: 10.3171/2015.8.jns151204] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [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: 11/06/2022]
Abstract
OBJECTIVE Identification of language areas using functional brain mapping is sometimes impossible using current methods but essential to preserve language function in patients with gliomas located within or near the frontal language area (FLA). However, the factors that influence the failure to detect language areas have not been elucidated. The present study evaluated the difficulty in identifying the FLA in dominant-side frontal gliomas that involve the pars triangularis (PT) to determine the factors that influenced failed positive language mapping. METHODS Awake craniotomy was performed on 301 patients from April 2000 to October 2013 at Tokyo Women's Medical University. Recurrent cases were excluded, and patients were also excluded if motor mapping indicated their glioma was in or around the motor area on the dominant or nondominant side. Eighty-two consecutive cases of primary frontal glioma on the dominant side were analyzed for the present study. MRI was used for all patients to evaluate whether tumors involved the PT and to perform language functional mapping with a bipolar electrical stimulator. Eighteen of 82 patients (mean age 39 ± 13 years) had tumors that showed involvement of the PT, and the detailed characteristics of these 18 patients were examined. RESULTS The FLA could not be identified with intraoperative brain mapping in 14 (17%) of 82 patients; 11 (79%) of these 14 patients had a tumor involving the PT. The negative response rate in language mapping was only 5% in patients without involvement of the PT, whereas this rate was 61% in patients with involvement of the PT. Univariate analyses showed no significant correlation between identification of the FLA and sex, age, histology, or WHO grade. However, failure to identify the FLA was significantly correlated with involvement of the PT (p < 0.0001). Similarly, multivariate analyses with the logistic regression model showed that only involvement of the PT was significantly correlated with failure to identify the FLA (p < 0.0001). In 18 patients whose tumors involved the PT, only 1 patient had mild preoperative dysphasia. One week after surgery, language function worsened in 4 (22%) of 18 patients. Six months after surgery, 1 (5.6%) of 18 patients had a persistent mild speech deficit. The mean extent of resection was 90% ± 7.1%. Conclusions Identification of the FLA can be difficult in patients with frontal gliomas on the dominant side that involve the PT, but the positive mapping rate of the FLA was 95% in patients without involvement of the PT. These findings are useful for establishing a positive mapping strategy for patients undergoing awake craniotomy for the treatment of frontal gliomas on the dominant side. Thoroughly positive language mapping with subcortical electrical stimulation should be performed in patients without involvement of the PT. More careful continuous neurological monitoring combined with subcortical electrical stimulation is needed when removing dominant-side frontal gliomas that involve the PT.
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Affiliation(s)
- Taiichi Saito
- Departments of 1 Neurosurgery and.,CREST, Japan Science and Technology Agency, Tokyo
| | - Yoshihiro Muragaki
- Departments of 1 Neurosurgery and.,Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,CREST, Japan Science and Technology Agency, Tokyo
| | - Takashi Maruyama
- Departments of 1 Neurosurgery and.,Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,CREST, Japan Science and Technology Agency, Tokyo
| | - Manabu Tamura
- Departments of 1 Neurosurgery and.,Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,CREST, Japan Science and Technology Agency, Tokyo
| | - Masayuki Nitta
- Departments of 1 Neurosurgery and.,Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University.,CREST, Japan Science and Technology Agency, Tokyo
| | | | - Yoshiyuki Konishi
- Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University
| | | | - Ryuta Kinno
- CREST, Japan Science and Technology Agency, Tokyo.,Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo; and.,Division of Neurology, Department of Internal Medicine, Showa University Northern Yokohama Hospital, Kanagawa, Japan
| | - Kuniyoshi L Sakai
- CREST, Japan Science and Technology Agency, Tokyo.,Department of Basic Science, Graduate School of Arts and Sciences, University of Tokyo; and
| | - Hiroshi Iseki
- Departments of 1 Neurosurgery and.,Faculty of Advanced Techno-Surgery, Tokyo Women's Medical University
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Hirai T, Nagae Y, White K, Kamitani K, Kido M, Uchiyama T, Nishibori M, Konishi Y, Yokomachi K, Sugimoto R, Saigo K, Ohishi T, Higaki Y, Kojio K, Takahara A. Solvent free oxidative coupling polymerization of 3-hexylthiophene (3HT) in the presence of FeCl3 particles. RSC Adv 2016. [DOI: 10.1039/c6ra23178k] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Solvent free oxidative coupling reaction of 3HT within a nanocavity is demonstrated. The side reaction at the 4-position is regulated.
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27
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Mitsuhata C, Konishi Y, Kaihara Y, Kozaia K. Treatment of ectopic eruption of permanent mandibular first molars with innovative dental appliances. Eur J Paediatr Dent 2014; 15:181-183. [PMID: 25101497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Ectopic eruption (EE) of a first permanent molar occurs during mixed dentition. However, treatment of first permanent mandibular molar EE has been seldom reported. CASE REPORT The cases of an 8-year-old girl and a 7-year-old boy are described, whose EE first permanent mandibular molars were correctly positioned after treatment with a dental appliance comprising a lingual arch, sectional arch, crimpable hook, and power chain or a simple molar controller, respectively. Both dental appliances are technically easy to construct, require short chair time, induce little discomfort on the patient, and ensure high-level treatment efficiency.
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Affiliation(s)
- C Mitsuhata
- Department of Paediatric Dentistry, Integrated Health Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Konishi
- Department of Paediatric Dentistry, Integrated Health Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Kaihara
- Department of Paediatric Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - K Kozaia
- Department of Paediatric Dentistry, Integrated Health Sciences, Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Nitta M, Muragaki Y, Maruyama T, Iseki H, Ikuta S, Konishi Y, Saito T, Tamura M, Chernov M, Watanabe A, Okamoto S, Maebayashi K, Mitsuhashi N, Okada Y. Updated therapeutic strategy for adult low-grade glioma stratified by resection and tumor subtype. Neurol Med Chir (Tokyo) 2014; 53:447-54. [PMID: 23883555 DOI: 10.2176/nmc.53.447] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The importance of surgical resection for patients with supratentorial low-grade glioma (LGG) remains controversial. This retrospective study of patients (n = 153) treated between 2000 to 2010 at a single institution assessed whether increasing the extent of resection (EOR) was associated with improved progression-free survival (PFS) and overall survival (OS). Histological subtypes of World Health Organization grade II tumors were as follows: diffuse astrocytoma in 49 patients (32.0%), oligoastrocytoma in 45 patients (29.4%), and oligodendroglioma in 59 patients (38.6%). Median pre- and postoperative tumor volumes and median EOR were 29.0 cm(3) (range 0.7-162 cm(3)) and 1.7 cm(3) (range 0-135.7 cm(3)) and 95%, respectively. Five- and 10-year OS for all LGG patients were 95.1% and 85.4%, respectively. Eight-year OS for diffuse astrocytoma, oligoastrocytoma, and oligodendroglioma were 70.7%, 91.2%, and 98.3%, respectively. Five-year PFS for diffuse astrocytoma, oligoastrocytoma, and oligodendroglioma were 42.6%, 71.3%, and 62.7%, respectively. Patients were divided into two groups by EOR ≥90% and <90%, and OS and PFS were analyzed. Both OS and PFS were significantly longer in patients with ≥90% EOR. Increased EOR resulted in better PFS for diffuse astrocytoma but not for oligodendroglioma. Multivariate analysis identified age and EOR as parameters significantly associated with OS. The only parameter associated with PFS was EOR. Based on these findings, we established updated therapeutic strategies for LGG. If surgery resulted in EOR <90%, patients with astrocytoma will require second-look surgery, whereas patients with oligodendroglioma or oligoastrocytoma, which are sensitive to chemotherapy, will be treated with chemotherapy.
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Affiliation(s)
- Masayuki Nitta
- Department of Neurosurgery, Graduate School of Medicine, Tokyo Women's Medical University, Kawada-cho, Shinjuku-ku, Tokyo, Japan.
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Tamura M, Hayashi M, Konishi Y, Tamura N, Regis J, Mangin JF, Taira T, Okada Y, Muragaki Y, Iseki H. Advanced Image Coregistration within the Leksell Workstation for the Planning of Glioma Surgery: Initial Experience. J Neurol Surg Rep 2013; 74:118-22. [PMID: 24303347 PMCID: PMC3836959 DOI: 10.1055/s-0033-1358380] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Accepted: 08/12/2013] [Indexed: 10/27/2022] Open
Abstract
Background Leksell GammaPlan (LGP) and SurgiPlan (ELEKTA Instruments AB, Stockholm, Sweden) may be used effectively for the detailed evaluation of regional neuroanatomy before open neurosurgical procedures. We report our initial experience in the cases of cerebral gliomas. Methods LGP v.8.3 was used before the surgical resection of cerebral gliomas for (1) the delineation of subdural grid electrodes and a detailed evaluation of their position relatively to cortical structures, and (2) for the fusion of structural magnetic resonance imaging and diffusion tensor imaging (DTI) for a detailed visualization of the corticospinal tract (CST) and optic radiation. Results Delineation of the subdural grid within LGP in a patient with seizures caused by left parietal glioma permitted a detailed assessment of the location of electrodes relative to the cortical gyri and sulci and significantly facilitated interpretation of brain mapping before tumor resection. In another patient with parieto-occipital glioma, simultaneous three-dimensional visualization of the tumor, CST, and optic radiation with the use of LGP permitted us to perform tumor resection without postoperative neurologic complications. Finally, incorporation of DTI into SurgiPlan resulted in precise planning of stereotactic biopsy for bilateral thalamic glioma. Conclusion The possibility for detailed evaluation of regional neuroanatomy based on various images within LGP and SurgiPlan may facilitate effective and safe surgical management of intracranial gliomas.
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Affiliation(s)
- Manabu Tamura
- Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan ; Department of Neurosurgery, Neurological Institute, Tokyo Women's Medical University, Tokyo, Japan
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Oka H, Konishi Y, Kitawaki T, Ichihashi N, Yoshida M. Development of multichannel array transducer of displacement mechanical-myogram. Annu Int Conf IEEE Eng Med Biol Soc 2013; 2013:5899-902. [PMID: 24111081 DOI: 10.1109/embc.2013.6610894] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The myoelectric signal (EMG) recorded on the skin surface is a time-related and spatial aggregate of the action potentials of motor units of skeletal muscle, and it indicates the input information for muscle contraction. The mechano-myographic signal (MMG) is a vibration of skin/muscle surface caused by muscle contraction and it directly reflects the activity of muscle contraction. The two-dimensional generation mechanism of MMG is still n ot clarified in detail. In this study, the displacement MMGs were recorded at 25 measuring points using 5 × 5 displacement MMG array transducer within 50× 50 mm, while the motor point of the biceps brachii was electro-stimulated. The spatial propagation map of twitch waveform of displacement MMG was drawn.
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Murakami T, Yoshikawa T, Maekawa Y, Ueda T, Isogai T, Konishi Y, Sakata K, Nagao K, Yamamoto T, Takayama M. Gender differences in patients with takotsubo cardiomyopathy: multi-center registry from Tokyo CCU network. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2981] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Murakami T, Yoshikawa T, Maekawa Y, Ueda T, Isogai T, Konishi Y, Sakata K, Nagao K, Yamamoto T, Takayama M. Presence of chronic kidney disease is associated with poor clinical outcomes during hospitalization in patients with takotsubo cardiomyopathy: multi-center registry from tokyo CCU network. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p2967] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Sakuta R, Konishi Y, Sugita K, Ono J, Tatsuno M. [Aspects of psychologists in the field of child neurology]. No To Hattatsu 2013; 45:231-234. [PMID: 23785841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
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Iizuka Y, Koda E, Tsutsumi Y, Konishi Y, Ashida H, Nakanishi T, Funabiki M. Neonatal dural arteriovenous fistula at the confluence presenting with paralysis of the orbicularis oris muscle. Neuroradiol J 2013; 26:47-51. [PMID: 23859167 PMCID: PMC5278863 DOI: 10.1177/197140091302600108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 01/27/2013] [Indexed: 11/15/2022] Open
Abstract
A male neonate presented a dural arteriovenous fistula (DAVF) at the confluence with paralysis of the orbicularis oris muscle. The interesting features in our case were the clinical symptoms (orbicularis oris muscle paralysis at birth), angioarchitecture (high-flow arteriovenous shunts at the confluence) and the size and hemodynamic flow (mid-sized venous pouch) of the fistula. Additionally, the embolization technique (i.e., occipital artery approach, closing shunts with pure glue) automatically resulted in the immediate and complete closure of accessory feeders without any additional treatment, and the midterm clinical outcome was good. We succeeded improving the symptoms of a neonate with a congenital high-flow DAVF by closing a fistula using a small amount of glue.
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Affiliation(s)
- Y Iizuka
- Department of Radiology, Toho University Ohashi Medical Center; Tokyo, Japan.
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Tamura N, Hayashi M, Chernov M, Tamura M, Horiba A, Konishi Y, Muragaki Y, Iseki H, Okada Y. Outcome after Gamma Knife surgery for intracranial arteriovenous malformations in children. J Neurosurg 2012. [DOI: 10.3171/2012.7.gks12998] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object
The focus of the present study was the evaluation of outcomes after unstaged and staged-volume Gamma Knife surgery (GKS) in children harboring intracranial arteriovenous malformations (AVMs).
Methods
Twenty-two children (median age 9.5 years) underwent GKS for AVMs and were followed up for at least 2 years thereafter. The disease manifested with intracranial hemorrhage in 77% of cases. In 68% of patients the lesion affected eloquent brain structures. The volume of the nidus ranged from 0.1 to 6.7 cm3. Gamma Knife surgery was guided mainly by data from dynamic contrast-enhanced CT scans, with preferential targeting of the junction between the nidus and draining vein. The total prescribed isodose volume was kept below 4.0 cm3, and the median margin dose was 22 Gy (range 20–25 Gy). If the volume of the nidus was larger than 4.0 cm3, a second radiosurgical session was planned for 3–4 years after the first one. Nine patients in the present series underwent unstaged radiosurgery, whereas staged-volume treatment was scheduled in 13 patients.
Results
Complete obliteration of the AVM was noted in 17 (77%) of 22 patients within a median period of 47 months after the last radiosurgical session. Complete obliteration of the lesion occurred in 89% of patients after unstaged treatment and in 62.5% after staged GKS. Four (67%) of 6 high-grade AVMs were completely obliterated. Complications included 3 bleeding episodes, the appearance of a region of hyperintensity on T2-weighted MR images in 2 patients who had no symptoms, and reappearance of the nidus in the vicinity of the completely obliterated AVM in 1 patient.
Conclusions
Radiosurgery is a highly effective management option for intracranial AVMs in children. For larger lesions, staged GKS may be applied successfully. Initial targeting of the nidus adjacent to the draining vein and application of a sufficient radiation dose to a relatively small volume (≤ 4 cm3) provides a good balance between a high probability of obliteration and a low risk of treatment-related complications.
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Affiliation(s)
- Noriko Tamura
- 1Department of Neurosurgery, Neurological Institute, and
| | - Motohiro Hayashi
- 1Department of Neurosurgery, Neurological Institute, and
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Mikhail Chernov
- 1Department of Neurosurgery, Neurological Institute, and
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Manabu Tamura
- 1Department of Neurosurgery, Neurological Institute, and
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Ayako Horiba
- 1Department of Neurosurgery, Neurological Institute, and
| | - Yoshiyuki Konishi
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoshihiro Muragaki
- 1Department of Neurosurgery, Neurological Institute, and
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
| | - Hiroshi Iseki
- 1Department of Neurosurgery, Neurological Institute, and
- 2Faculty of Advanced Techno-Surgery, Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, Tokyo, Japan
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Furia GU, Kostelijk EH, Vergouw CG, Lee H, Lee S, Park D, Kang H, Lim C, Yang K, Lee S, Lim C, Park Y, Shin M, Yang K, Lee H, Beyhan Z, Fisch JD, Sher G, Keskintepe L, VerMilyea MD, Anthony JT, Graham JR, Tucker MJ, Tucker MJ, Freour T, Lattes S, Lammers J, Mansour W, Jean M, Barriere P, El Danasouri I, Gagsteiger F, Rinaldi L, Selman H, Antonova I, Milachich T, Valkova L, Shterev A, Barcroft J, Dayoub N, Thong J, Abdel Reda H, Khalaf Y, El Touky T, Cabry R, Brzakowski R, Lourdel E, Brasseur F, Copin H, Merviel P, Yamada M, Takanashi K, Hamatani T, Akutsu H, Fukunaga T, Inoue O, Ogawa S, Sugawara K, Okumura N, Chikazawa N, Kuji N, Umezawa A, Tomita M, Yoshimura Y, Van der Jeught M, Ghimire S, O'Leary T, Lierman S, Deforce D, Chuva de Sousa Lopes S, Heindryckx B, De Sutter P, Herrero J, Tejera A, De los Santos MJ, Castello D, Romero JL, Meseguer M, Barriere P, Lammers J, Lattes S, Leperlier F, Mirallie S, Jean M, Freour T, Schats R, Al-Nofal M, Vergouw CG, Lens JW, Rooth H, Kostelijk EH, Hompes PG, Lambalk CB, Hreinsson J, Karlstrom PO, Wanggren K, Lundqvist M, Vahabi Z, Eftekhari-Yazdi P, Dalman A, Ebrahimi B, Daneshzadeh MT, Rajabpour Niknam M, Choi EG, Rho YH, Oh DS, Park LS, Cheon HS, Lee CS, Kong IK, Lee SC, Liebenthron J, Montag M, Koster M, Toth B, Reinsberg J, van der Ven H, Strowitzki T, Morita H, Hirosawa T, Watanabe S, Wada T, Kamihata M, Kuwahata A, Ochi M, Horiuchi T, Fatemeh H, Eftekhari-Yazdi P, Karimian L, Fazel M, Fouladi H, Johansson L, Ruttanajit T, Chanchamroen S, Sopaboon P, Seweewanlop S, Sawakwongpra K, Jindasri P, Jantanalapruek T, Charoonchip K, Vajta G, Quangkananurug W, Yi G, Jo JW, Jee BC, Suh CS, Kim SH, Zhang Y, Zhao HJ, Cui YG, Gao C, Gao LL, Liu JY, Sozen E, Buluc B, Vicdan K, Akarsu C, Tuncay G, Hambiliki F, Bungum M, Agapitou K, Makrakis E, Liarmakopoulou S, Anagnostopoulou C, Moustakarias T, Giannaris D, Wang J, Andonov M, Linara E, Charleson C, Ahuja KK, Ozsoy S, Morris MB, Day ML, Cobo A, Castello D, Viloria T, Campos P, Vallejo B, Remohi J, Roldan M, Perez-Cano I, Cruz M, Martinez M, Gadea B, Munoz M, Garrido N, Meseguer M, Mesut N, Ciray HN, Mesut A, Isler A, Bahceci M, Munoz M, Fortuno S, Legidos V, Muela L, Roldan M, Galindo N, Cruz M, Meseguer M, Gunasheela S, Gunasheela D, Ueno S, Uchiyama K, Kondo M, Ito M, Kato K, Takehara Y, Kato O, Edgar DH, Krapez JA, Bacer Kermavner L, Virant-Klun I, Pinter B, Tomazevic T, Vrtacnik-Bokal E, Lee SG, Kang SM, Lee SW, Jeong HJ, Lee YC, Lim JH, Bochev I, Valkova L, Kyurkchiev S, Shterev A, Wilding M, Coppola G, Di Matteo L, Dale B, Hormann-Kropfl M, Kastelic D, Montag M, Schenk M, Fourati Ben Mustapha S, Khrouf M, Braham M, Kallel L, Elloumi H, Merdassi G, Chaker A, Ben Meftah M, Zhioua F, Zhioua A, Kocent J, Neri QV, Rosenwaks Z, Palermo GD, Best L, Campbell A, Fishel S, Calimlioglu N, Sahin G, Akdogan A, Susamci T, Bilgin M, Goker ENT, Tavmergen E, Cantatore C, Ding J, Depalo R, Smith GD, Kasapi E, Panagiotidis Y, Papatheodorou A, Goudakou M, Pasadaki T, Nikolettos N, Asimakopoulos B, Prapas Y, Soydan E, Gulebenzer G, Karatekelioglu E, Budak E, Pehlivan Budak T, Alegretti J, Cuzzi J, Negrao PM, Moraes MP, Bueno MB, Serafini P, Motta ELA, Elaimi A, Harper JC, Stecher A, Baborova P, Wirleitner B, Schwerda D, Vanderzwalmen P, Zech NH, Stanic P, Hlavati V, Gelo N, Pavicic-Baldani D, Sprem-Goldstajn M, Radakovic B, Kasum M, Strelec M, Simunic V, Vrcic H, Khan I, Urich M, Abozaid T, Ullah K, Abuzeid M, Fakih M, Shamma N, Ayers J, Ashraf M, Milik S, Pirkevi C, Atayurt Z, Yazici S, Yelke H, Kahraman S, Dal Canto M, Coticchio G, Brambillasca F, Mignini Renzini M, Novara P, Maragno L, Karagouga G, De Ponti E, Fadini R, Resta S, Magli MC, Cavallini G, Muzzonigro F, Ferraretti AP, Gianaroli L, Barberi M, Orlando G, Sciajno R, Serrao L, Fava L, Preti S, Bonu MA, Borini A, Varras M, Polonifi A, Mantzourani M, Mavrogianni D, Stefanidis K, Griva T, Bletsa R, Dinopoulou V, Drakakis P, Loutradis D, Campbell A, Hickman CFL, Duffy S, Bowman N, Gardner K, Fishel S, Sati L, Zeiss C, Demir R, McGrath J, Yelke H, Atayurt Z, Yildiz S, Unal S, Kumtepe Y, Kahraman S, Atayurt Z, Yelke H, Unal S, Kumtepe Y, Kahraman S, Aljaser F, Hernandez J, Tomlinson M, Campbell B, Fosas N, Redondo Ania M, Marina F, Molfino F, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Redondo Ania M, Marina F, Molfino F, Fosas N, Martin P, Perez N, Carrasco A, Garcia N, Gonzalez S, Marina S, Scaruffi P, Stigliani S, Tonini GP, Venturini PL, Anserini P, Guglielmo MC, Coticchio G, Albertini DF, Dal Canto M, Brambillasca F, Lain M, Caliari I, Mignini Renzini M, Fadini R, Oikonomou Z, Chatzimeletiou K, Sioga A, Oikonomou L, Kolibianakis E, Tarlatzis B, Nottola SA, Bianchi V, Lorenzo C, Maione M, Macchiarelli G, Borini A, Gomez E, Gil MA, Sanchez-Osorio J, Maside C, Martinez MJ, Torres I, Rodenas C, Cuello C, Parrilla I, Molina G, Garcia A, Margineda J, Navarro S, Roca J, Martinez EA, Avcil F, Ozden H, Candan ZN, Uslu H, Karaman Y, Gioacchini G, Giorgini E, Carnevali O, Bianchi V, Ferraris P, Vaccari L, Borini A, Choe S, Tae J, Kim C, Lee J, Hwang D, Kim K, Suh C, Jee B, Ozden H, Candan ZN, Avcil F, Uslu H, Karaman Y, Catt SL, Sorenson H, Vela M, Duric V, Chen P, Temple-Smith PD, Pangestu M, Yoshimura T, Fukunaga N, Nagai R, Kitasaka H, Tamura F, Hasegawa N, Kato M, Nakayama K, Takeuchi M, Aoyagi N, Yasue K, Watanabe H, Asano E, Hashiba Y, Asada Y, Iwata K, Yumoto K, Mizoguchi C, Sargent H, Kai Y, Ueda M, Tsuchie Y, Imajo A, Iba Y, Mio Y, Els-Smit CL, Botha MH, Sousa M, Windt-De Beer M, Kruger TF, Muller N, Magli C, Corani G, Giusti A, Castelletti E, Gambardella L, Gianaroli L, Seshadri S, Sunkara SK, El-Toukhy T, Kishi I, Maruyama T, Ohishi M, Akiba Y, Asada H, Konishi Y, Nakano M, Kamei K, Yoshimura Y, Lee JH, Lee KH, Park IH, Sun HG, Kim SG, Kim YY, Choi EM, Lee DH, Chavez SL, Loewke KE, Behr B, Han J, Moussavi F, Reijo Pera RA, Yokota H, Yokota Y, Yokota M, Sato S, Nakagawa M, Sato M, Anazawa I, Araki Y, Virant-Klun I, Knez K, Pozlep B, Tomazevic T, Vrtacnik-Bokal E, Lim JH, Vermilyea MD, Graham JR, Levy MJ, Tucker MJ, Carvalho M, Cordeiro I, Leal F, Aguiar A, Nunes J, Rodrigues C, Soares AP, Sousa S, Calhaz-Jorge C, Braga DPAF, Setti AS, Figueira RCS, Aoki T, Iaconelli A, Borges E, Ozkavukcu S, Sonmezer M, Atabekoglu C, Berker B, Ozmen B, Isbacar S, Ibis E, Menezes J, Lalitkumar PGL, Borg P, Ekwurtzel E, Nordqvist S, Vaegter K, Tristen C, Sjoblom P, Azevedo MC, Figueira RCS, Braga DPAF, Setti AS, Iaconelli A, Borges E, Remohi Gimenez J, Cobo A, Castello D, Gamiz P, Albert C, Ferreira RC, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Colturato SS, Braga DPAF, Figueira RCS, Setti AS, Resende S, Iaconelli A, Borges E, Ferrer Buitrago M, Ferrer Robles E, Munoz Soriano P, Ruiz-Jorro M, Calatayud Lliso C, Rawe VY, Wanggren K, Hanrieder J, Hambiliki F, Gulen-Yaldir F, Bergquist J, Stavreus-Evers A, Hreinsson J, Grunskis A, Bazarova A, Dundure I, Fodina V, Brikune J, Lakutins J, Pribenszky C, Cornea M, Reichart A, Uhereczky G, Losonczy E, Ficsor L, Lang Z, Ohgi S, Nakamura C, Hagiwara C, Kawashima M, Yanaihara A, Jones GM, Biba M, Kokkali G, Vaxevanoglou T, Chronopoulou M, Petroutsou K, Sfakianoudis K, Pantos K, Perez-Cano I, Gadea B, Martinez M, Muela L, Cruz M, Galindo N, Munoz M, Garrido N, Romano S, Albricci L, Stoppa M, Cerza C, Sanges F, Fusco S, Capalbo A, Maggiulli R, Ubaldi F, Rienzi L, Ulrick J, Kilani S, Chapman M, Losada C, Ortega I, Pacheco A, Bronet F, Aguilar J, Ojeda M, Taboas E, Perez M, Munoz E, Pellicer A, Meseguer M, Boumela I, Assou S, Haouzi D, Monzo C, Dechaud H, Hamamah S, Dechaud H, Boumela I, Assou S, Haouzi D, Monzo C, Hamamah S, Nakaoka Y, Hashimoto S, Amo A, Yamagata K, Nakano T, Akamatsu Y, Mezawa T, Ohnishi Y, Himeno T, Inoue T, Ito K, Morimoto Y. EMBRYOLOGY. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.77] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Yang HJ, Sugiura Y, Ikegami K, Konishi Y, Setou M. Axonal gradient of arachidonic acid-containing phosphatidylcholine and its dependence on actin dynamics. J Biol Chem 2011; 287:5290-300. [PMID: 22207757 DOI: 10.1074/jbc.m111.316877] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Phosphatidylcholine (PC) is the most abundant component of lipid bilayers and exists in various molecular forms, through combinations of two acylated fatty acids. Arachidonic acid (AA)-containing PC (AA-PC) can be a source of AA, which is a crucial mediator of synaptic transmission and intracellular signaling. However, the distribution of AA-PC within neurons has not been indicated. In the present study, we used imaging mass spectrometry to characterize the distribution of PC species in cultured neurons of superior cervical ganglia. Intriguingly, PC species exhibited a unique distribution that was dependent on the acyl chains at the sn-2 position. In particular, we found that AA-PC is enriched within the axon and is distributed across a proximal-to-distal gradient. Inhibitors of actin dynamics (cytochalasin D and phallacidin) disrupted this gradient. This is the first report of the gradual distribution of AA-PC along the axon and its association with actin dynamics.
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Affiliation(s)
- Hyun-Jeong Yang
- Department of Cell Biology and Anatomy, Hamamatsu University School of Medicine, 1-20-1, Handayama, Hamamatsu 431-3192, Japan
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Iizuka Y, Murata N, Kohda E, Tsutsumi Y, Nosaka S, Morota N, Konishi Y. High-flow Neonatal Macrocerebral Arteriovenous Fistulas in Hereditary Hemorrhagic Telangiectasia. Neuroradiol J 2011; 24:772-8. [PMID: 24059775 DOI: 10.1177/197140091102400517] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2011] [Accepted: 05/15/2011] [Indexed: 11/16/2022] Open
Abstract
Although some cases of vein of Galen aneurysmal malformation (VGAM) present initial clinical symptoms such as cardiopulmonary disturbance in the neonatal period, pial arteriovenous fistula is very seldom present as a clinical symptom immediately after birth. A neonatal patient, the first-born to his family, presented with tachypnea postpartum. This baby had a family history of hereditary hemorrhagic telangiectasia. A cerebral MR image revealed multiple macrocerebral arteriovenous fistulas (MCAVFs), resulting in a large partially thrombosed venous pouch within the cerebral cortex. Trans-arterial embolizations of the main two fistulas were performed using N-butyl cyanoacrylate (NBCA) with tantalum powder six months after birth. Post-embolization angiography confirmed the obliteration of the fistulas and magnetic resonance imaging (MRI) revealed thrombosis and reduction in size of the venous component. His tachypnea disappeared completely. There were no neurological complications due to the treatment. The prognosis of multiple MCAVFs mainly depends on the presence of medullar signs and symptoms and a delay before treatment. Pure glue endovascular intervention, as used in our case, is considered to be the first therapeutic choice to decrease the risk of neurological consequences.
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Affiliation(s)
- Y Iizuka
- Department of Radiology, Toho University Ohashi Medical Center; Tokyo, Japan -
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Konishi Y, Oda T, Tsukazaki S, Kinugasa R, Fukubayashi T. Relationship between quadriceps femoris muscle volume and muscle torque at least 18 months after anterior cruciate ligament reconstruction. Scand J Med Sci Sports 2011; 22:791-6. [PMID: 21599756 DOI: 10.1111/j.1600-0838.2011.01332.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The purpose of this study was to evaluate motor unit recruitment in the quadriceps femoris (QF) after anterior cruciate ligament (ACL) rupture and repair. Subjects included 24 patients at ≥ 18 months after ACL reconstruction and 22 control subjects with no history of knee injury. A series of cross-sectional magnetic resonance images were obtained to compare the QF of patients' injured side with that of their uninjured sides and that of uninjured control subjects. Muscle torque per muscle volume was calculated as isokinetic peak torque divided by QF muscle volume (cm(3)). The mean muscle torque per unit volume of the injured side of patients was not significantly different from that of the uninjured side or control subjects (one-way ANOVA) Results of the present study were contrary to the results of a previous study that evaluated patients at ≤ 12 months after ACL reconstruction. The present study found that high-threshold motor unit recruitment was restored at ≥ 18 months after ACL reconstruction. Thus, clinicians must develop techniques that increase the recruitment of high-threshold motor units in the QF from the period immediately after the injury until approximately 18 months after ACL reconstruction.
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Affiliation(s)
- Y Konishi
- Department of Physical Education, National Defence Academy, Kanagawa, Japan.
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Konishi Y, Toshima T. [Psychologist in child neurology]. No To Hattatsu 2011; 43:217-219. [PMID: 21638906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Konishi Y. ACL repair might induce further abnormality of gamma loop in the intact side of the QF. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2010.10.616] [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: 11/29/2022]
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Kimura Y, Kurabe N, Ikegami K, Tsutsumi K, Konishi Y, Kaplan OI, Kunitomo H, Iino Y, Blacque OE, Setou M. Identification of tubulin deglutamylase among Caenorhabditis elegans and mammalian cytosolic carboxypeptidases (CCPs). J Biol Chem 2010; 285:22936-41. [PMID: 20519502 DOI: 10.1074/jbc.c110.128280] [Citation(s) in RCA: 86] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Tubulin polyglutamylation is a reversible post-translational modification, serving important roles in microtubule (MT)-related processes. Polyglutamylases of the tubulin tyrosine ligase-like (TTLL) family add glutamate moieties to specific tubulin glutamate residues, whereas as yet unknown deglutamylases shorten polyglutamate chains. First we investigated regulatory machinery of tubulin glutamylation in MT-based sensory cilia of the roundworm Caenorhabditis elegans. We found that ciliary MTs were polyglutamylated by a process requiring ttll-4. Conversely, loss of ccpp-6 gene function, which encodes one of two cytosolic carboxypeptidases (CCPs), resulted in elevated levels of ciliary MT polyglutamylation. Consistent with a deglutamylase function for ccpp-6, overexpression of this gene in ciliated cells decreased polyglutamylation signals. Similarly, we confirmed that overexpression of murine CCP5, one of two sequence orthologs of nematode ccpp-6, caused a dramatic loss of MT polyglutamylation in cultured mammalian cells. Finally, using an in vitro assay for tubulin glutamylation, we found that recombinantly expressed Myc-tagged CCP5 exhibited deglutamylase biochemical activities. Together, these data from two evolutionarily divergent systems identify C. elegans CCPP-6 and its mammalian ortholog CCP5 as a tubulin deglutamylase.
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Affiliation(s)
- Yoshishige Kimura
- Department of Molecular Anatomy, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka 431-3192, Japan
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Koizumi S, Yamamoto S, Hayasaka T, Konishi Y, Yamaguchi-Okada M, Goto-Inoue N, Sugiura Y, Setou M, Namba H. Imaging mass spectrometry revealed the production of lyso-phosphatidylcholine in the injured ischemic rat brain. Neuroscience 2010; 168:219-25. [PMID: 20362643 DOI: 10.1016/j.neuroscience.2010.03.056] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 03/19/2010] [Accepted: 03/23/2010] [Indexed: 10/19/2022]
Abstract
To develop an effective neuroprotective strategy against ischemic injury, it is important to identify the key molecules involved in the progression of injury. Direct molecular analysis of tissue using mass spectrometry (MS) is a subject of much interest in the field of metabolomics. Most notably, imaging mass spectrometry (IMS) allows visualization of molecular distributions on the tissue surface. To understand lipid dynamics during ischemic injury, we performed IMS analysis on rat brain tissue sections with focal cerebral ischemia. Sprague-Dawley rats were sacrificed at 24 h after middle cerebral artery occlusion, and brain sections were prepared. IMS analyses were conducted using matrix-assisted laser desorption/ionization time-of-flight mass spectrometer (MALDI-TOF MS) in positive ion mode. To determine the molecular structures, the detected ions were subjected to tandem MS. The intensity counts of the ion signals of m/z 798.5 and m/z 760.5 that are revealed to be a phosphatidylcholine, PC (16:0/18:1) are reduced in the area of focal cerebral ischemia as compared to the normal cerebral area. In contrast, the signal of m/z 496.3, identified as a lyso-phosphatidylcholine, LPC (16:0), was clearly increased in the area of focal cerebral ischemia. In IMS analyses, changes of PC (16:0/18:1) and LPC (16:0) are observed beyond the border of the injured area. Together with previous reports--that PCs are hydrolyzed by phospholipase A(2) (PLA(2)) and produce LPCs,--our present results suggest that LPC (16:0) is generated during the injury process after cerebral ischemia, presumably via PLA(2) activation, and that PC (16:0/18:1) is one of its precursor molecules.
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Affiliation(s)
- S Koizumi
- Department of Neurosurgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
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Makino I, Matsuda Y, Yoneyama M, Hirasawa K, Takagi K, Ohta H, Konishi Y. Effect of maternal stress on fetal heart rate assessed by vibroacoustic stimulation. J Int Med Res 2010; 37:1780-8. [PMID: 20146876 DOI: 10.1177/147323000903700614] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This study was designed to determine whether maternal stress levels, state and trait anxiety levels, and stress hormones affect fetal heart rate (FHR) patterns after vibroacoustic stimulation (VAS) at 30 weeks of gestation. A total of 24 healthy pregnant women with a single fetus pregnancy were enrolled. Corticotropin releasing hormone (CRH) and adrenocorticotropic hormone in maternal plasma and cortisol, and chromogranin A in saliva were measured. The FHR patterns after VAS were divided into three types: type I, a long period of acceleration or one acceleration lasting > 1 min or at least two accelerations lasting > 15 s; type II, a biphasic response with acceleration followed by deceleration; and type III, no response or prolonged deceleration. In the high trait anxiety group, CRH levels were significantly higher than in the low trait anxiety group, and FHR patterns after VAS showed mostly a type II response pattern. These findings suggest that stress in pregnant women with high trait anxiety may influence FHR patterns after VAS.
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Affiliation(s)
- I Makino
- Department of Obstetrics and Gynaecology, Tokyo Women's Medical University, Medical Centre East, Tokyo, Japan.
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Otsuka Y, Yamazaki Y, Konishi Y, Kanazawa S, Yamaguchi M, Spehar B. Perception of illusory transparent surface by young infants. J Vis 2010. [DOI: 10.1167/8.6.1009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Konishi Y, Tsuchiyua R, Ohata K, Ikegami K, Setou M. TTLL1 and TTLL7 selectively catalyze polyglutamylation of alpha- and beta-tubulins, respectively, which modulate functions of brain microtubules. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.2117] [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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Inoue K, Tanii H, Konishi Y, Hara N, Matsumoto T, Nata M. Improvement of total health measures in Mie Prefecture, Japan Mie. W INDIAN MED J 2010; 59:117. [PMID: 20931932] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
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Yang H, Sugiura Y, Ikegami K, Konishi Y, Setou M. Axonal gradient of phosphatidylcholine in neurons. Neurosci Res 2010. [DOI: 10.1016/j.neures.2010.07.2118] [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: 10/19/2022]
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Abstract
AIMS Reticulon 3 (RTN3), a member of the reticulon family of proteins, interacts with the beta-secretase, beta-site amyloid precursor protein-cleaving enzyme 1 (BACE1), and inhibits its activity to produce beta-amyloid protein. The aim of the present study was to clarify the biological role of RTN3 in the brain and its potential involvement in the neuropathology of Alzheimer's disease (AD). METHODS We performed immunohistochemical and biochemical analyses using a specific antibody against RTN3 to investigate the expression and subcellular localization of RTN3 in control and AD brain tissue samples. RESULTS Western blot analysis revealed no significant differences in the RTN3 levels between control and AD brains. Immunohistochemical staining showed that RTN3 immunoreactivity was predominantly localized in pyramidal neurones of the cerebral cortex. The patterns of RTN3 immunostaining were similar in control and AD cerebral cortices, and senile plaques were generally negative for RTN3. Biochemical subcellular fractionation disclosed that RTN3 colocalized with BACE1 in various fractions, including the endoplasmic reticulum and the Golgi apparatus. Double-immunofluorescence staining additionally indicated that RTN3 was localized in both endoplasmic reticulum and Golgi compartments in neurones. CONCLUSIONS These results show that RTN3 is primarily expressed in pyramidal neurones of the human cerebral cortex and that no clear difference of RTN3 immunoreactivity is observable between control and AD brains. Our data also suggest that there is considerable colocalization of RTN3 with BACE1 at a subcellular level.
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Affiliation(s)
- H Kume
- Department of Demyelinating Disease and Ageing, National Institute of Neuroscience, NCNP, Tokyo, Japan
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