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Kikumoto M, Kurashige T, Ohshita T, Kume K, Kikumoto O, Nezu T, Aoki S, Ochi K, Morino H, Nomura E, Yamashita H, Kaneko M, Maruyama H, Kawakami H. 'Raisin bread sign' feature of pontine autosomal dominant microangiopathy and leukoencephalopathy. Brain Commun 2023; 5:fcad281. [PMID: 37953842 PMCID: PMC10636559 DOI: 10.1093/braincomms/fcad281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/15/2023] [Accepted: 10/19/2023] [Indexed: 11/14/2023] Open
Abstract
Pontine autosomal dominant microangiopathy and leukoencephalopathy is one of hereditary cerebral small vessel diseases caused by pathogenic variants in COL4A1 3'UTR and characterized by multiple small infarctions in the pons. We attempted to establish radiological features of this disease. We performed whole exome sequencing and Sanger sequencing in one family with undetermined familial small vessel disease, followed by clinicoradiological assessment and a postmortem examination. We subsequently investigated clinicoradiological features of patients in a juvenile cerebral vessel disease cohort and searched for radiological features similar to those found in the aforementioned family. Sanger sequencing was performed in selected cohort patients in order to detect variants in the same gene. An identical variant in the COL4A1 3'UTR was observed in two patients with familial small vessel disease and the two selected patients, thereby confirming the pontine autosomal dominant microangiopathy and leukoencephalopathy diagnosis. Furthermore, postmortem examination showed that the distribution of thickened media tunica and hyalinized vessels was different from that in lacunar infarctions. The appearance of characteristic multiple oval small infarctions in the pons, which resemble raisin bread, enable us to make a diagnosis of pontine autosomal dominant microangiopathy and leukoencephalopathy. This feature, for which we coined the name 'raisin bread sign', was also correlated to the pathological changes.
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Affiliation(s)
- Mai Kikumoto
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
- Department of Neurology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 7310293, Japan
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 7348553, Japan
| | - Takashi Kurashige
- Department of Neurology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure 7370023, Japan
| | - Tomohiko Ohshita
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
- Department of Neurology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 7310293, Japan
- Department of Neurology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Kure 7370023, Japan
| | - Kodai Kume
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 7348553, Japan
| | | | - Tomohisa Nezu
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
| | - Shiro Aoki
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
| | - Kazuhide Ochi
- Department of Neurology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 7310293, Japan
- Department of Neurology, Hiroshima Prefectural Hospital, Hiroshima 7348530, Japan
| | - Hiroyuki Morino
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
- Department of Medical Genetics, Tokushima University Graduate School of Biomedical Sciences, Tokushima 7708503, Japan
| | - Eiichi Nomura
- Department of Neurology, Hiroshima City Hiroshima Citizens Hospital, Hiroshima 7308518, Japan
| | - Hiroshi Yamashita
- Department of Neurology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 7310293, Japan
| | - Mayumi Kaneko
- Department of Diagnostic Pathology, Hiroshima City North Medical Center Asa Citizens Hospital, Hiroshima 7310293, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima 7348551, Japan
| | - Hideshi Kawakami
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima 7348553, Japan
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2
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Kume K, Kurashige T, Muguruma K, Morino H, Tada Y, Kikumoto M, Miyamoto T, Akutsu SN, Matsuda Y, Matsuura S, Nakamori M, Nishiyama A, Izumi R, Niihori T, Ogasawara M, Eura N, Kato T, Yokomura M, Nakayama Y, Ito H, Nakamura M, Saito K, Riku Y, Iwasaki Y, Maruyama H, Aoki Y, Nishino I, Izumi Y, Aoki M, Kawakami H. CGG repeat expansion in LRP12 in amyotrophic lateral sclerosis. Am J Hum Genet 2023; 110:1086-1097. [PMID: 37339631 PMCID: PMC10357476 DOI: 10.1016/j.ajhg.2023.05.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2023] [Revised: 05/25/2023] [Accepted: 05/25/2023] [Indexed: 06/22/2023] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by the degeneration of motor neurons. Although repeat expansion in C9orf72 is its most common cause, the pathogenesis of ALS isn't fully clear. In this study, we show that repeat expansion in LRP12, a causative variant of oculopharyngodistal myopathy type 1 (OPDM1), is a cause of ALS. We identify CGG repeat expansion in LRP12 in five families and two simplex individuals. These ALS individuals (LRP12-ALS) have 61-100 repeats, which contrasts with most OPDM individuals with repeat expansion in LRP12 (LRP12-OPDM), who have 100-200 repeats. Phosphorylated TDP-43 is present in the cytoplasm of iPS cell-derived motor neurons (iPSMNs) in LRP12-ALS, a finding that reproduces the pathological hallmark of ALS. RNA foci are more prominent in muscle and iPSMNs in LRP12-ALS than in LRP12-OPDM. Muscleblind-like 1 aggregates are observed only in OPDM muscle. In conclusion, CGG repeat expansions in LRP12 cause ALS and OPDM, depending on the length of the repeat. Our findings provide insight into the repeat length-dependent switching of phenotypes.
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Affiliation(s)
- Kodai Kume
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Takashi Kurashige
- Department of Neurology, National Hospital Organization Kure Medical Center and Chugoku Cancer Center, Hiroshima, Japan
| | - Keiko Muguruma
- Department of iPS Cell Applied Medicine, Graduate School of Medicine, Kansai Medical University, Osaka, Japan
| | - Hiroyuki Morino
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Yui Tada
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Mai Kikumoto
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan; Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Tatsuo Miyamoto
- Department of Genetics and Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Silvia Natsuko Akutsu
- Department of Genetics and Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Yukiko Matsuda
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Shinya Matsuura
- Department of Genetics and Cell Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan
| | - Masahiro Nakamori
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Ayumi Nishiyama
- Department of Neurology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Rumiko Izumi
- Department of Neurology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Tetsuya Niihori
- Department of Medical Genetics, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Masashi Ogasawara
- Department of Neuromuscular Research, National Institute of Neuroscience, National Centre of Neurology and Psychiatry, National Centre Hospital, Tokyo, Japan
| | - Nobuyuki Eura
- Department of Neuromuscular Research, National Institute of Neuroscience, National Centre of Neurology and Psychiatry, National Centre Hospital, Tokyo, Japan
| | - Tamaki Kato
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Mamoru Yokomura
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Yoshiaki Nakayama
- Department of Neurology, Wakayama Medical University, Wakayama, Japan
| | - Hidefumi Ito
- Department of Neurology, Wakayama Medical University, Wakayama, Japan
| | | | - Kayoko Saito
- Institute of Medical Genetics, Tokyo Women's Medical University, Tokyo, Japan
| | - Yuichi Riku
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Japan
| | - Yasushi Iwasaki
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Nagakute, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Hiroshima, Japan
| | - Yoko Aoki
- Department of Medical Genetics, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Centre of Neurology and Psychiatry, National Centre Hospital, Tokyo, Japan
| | - Yuishin Izumi
- Department of Neurology, Tokushima University Graduate School of Biomedical Sciences, Tokushima, Japan
| | - Masashi Aoki
- Department of Neurology, Tohoku University Graduate School of Medicine, Miyagi, Japan
| | - Hideshi Kawakami
- Department of Molecular Epidemiology, Research Institute for Radiation Biology and Medicine, Hiroshima University, Hiroshima, Japan.
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Kikumoto M, Neshige S, Shishido T, Ueno H, Aoki S, Iida K, Maruyama H. Seizure Deterioration with Increased Levetiracetam Blood Concentration during the Postpartum Period in Refractory Temporal Lobe Epilepsy. Intern Med 2022; 61:1237-1240. [PMID: 34615824 PMCID: PMC9107969 DOI: 10.2169/internalmedicine.8173-21] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
We evaluated a 39-year-old pregnant woman with right temporal lobe epilepsy. During the second trimester, seizure deterioration was responsive to an increased daily dose of levetiracetam (LEV). However, immediately after delivery, new non-habitual seizures emerged along with a sharply increased LEV concentration. The frequency of habitual seizures also slightly increased. The non-habitual seizures completely disappeared, and the frequency of the habitual seizures improved to the baseline level after the LEV dosage was reduced. Thus, a paradoxical effect of an increased LEV blood concentration was assumed to be a potential cause of these events. Peripartum pharmacokinetic fluctuations in LEV levels should be monitored carefully.
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Affiliation(s)
- Mai Kikumoto
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Shuichiro Neshige
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
- Epilepsy Center, Hiroshima University Hospital, Japan
| | - Takeo Shishido
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
- Epilepsy Center, Hiroshima University Hospital, Japan
- Department of Neurology, Hiroshima City Asa Citizens Hospital, Japan
| | - Hiroki Ueno
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
- Epilepsy Center, Hiroshima University Hospital, Japan
- Department of Neurology, Hiroshima City Hiroshima Citizens Hospital, Japan
| | - Shiro Aoki
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Koji Iida
- Epilepsy Center, Hiroshima University Hospital, Japan
- Department of Neurosurgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
- Epilepsy Center, Hiroshima University Hospital, Japan
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4
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Neshige S, Ono N, Iryo T, Watanabe T, Yamada H, Mine N, Takebayashi Y, Kikumoto M, Toko M, Maruyama H. Nationwide online EEG education during coronavirus disease 2019 pandemic. Clin Neurophysiol 2021; 132:2763-2765. [PMID: 34583118 PMCID: PMC8416360 DOI: 10.1016/j.clinph.2021.08.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2021] [Accepted: 08/29/2021] [Indexed: 12/15/2022]
Affiliation(s)
- Shuichiro Neshige
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan; Epilepsy Center, Hiroshima University Hospital, Japan.
| | - Narumi Ono
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Takafumi Iryo
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Tomoaki Watanabe
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Hidetada Yamada
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Naoko Mine
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Yoshiko Takebayashi
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Mai Kikumoto
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Megumi Toko
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan; Epilepsy Center, Hiroshima University Hospital, Japan
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5
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Kikumoto M, Nezu T, Shiga Y, Motoda A, Toko M, Kurashige T, Ueno H, Takahashi T, Morino H, Sone J, Iwasaki Y, Sobue G, Maruyama H. Case of Neuronal Intranuclear Inclusion Disease With Dynamic Perfusion Changes Lacking Typical Signs on Diffusion-Weighted Imaging. Neurol Genet 2021; 7:e601. [PMID: 34131587 PMCID: PMC8195458 DOI: 10.1212/nxg.0000000000000601] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 04/13/2021] [Indexed: 11/21/2022]
Affiliation(s)
- Mai Kikumoto
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Tomohisa Nezu
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Yuji Shiga
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Atsuko Motoda
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Megumi Toko
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Takashi Kurashige
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Hiroki Ueno
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Tetsuya Takahashi
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Hiroyuki Morino
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Jun Sone
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Yasushi Iwasaki
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Gen Sobue
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics (M.K., T.N., Y. Shiga, A.M., M.T., T.K., H.U., T.T., H. Morino, H. Maruyama), Hiroshima University Graduate School of Biomedical and Health Sciences; Department of Neurology (T.K.), National Hospital Organization Kure Medical Center and Chugoku Cancer Center; Division of Rehabilitation (T.T.), Hiroshima International University; Department of Neurology (J.S.), National Hospital Organization Suzuka National Hospital; Institute for Medical Science of Aging (J.S., Y.I.), Aichi Medical University, Nagakute; and Department of Neurology (G.S.), Nagoya University Graduate School of Medicine, Japan
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Kikumoto M, Aoki S, Shiga Y, Kinoshita N, Nezu T, Ueno H, Arihiro K, Maruyama H. Giant Cell Arteritis with Internal Carotid Artery Occlusion in the Absence of Typical Clinical Features. Intern Med 2021; 60:1293-1297. [PMID: 33229803 PMCID: PMC8112973 DOI: 10.2169/internalmedicine.5592-20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
A 65-year-old man presented with a slight headache and transient visual disturbance. Magnetic resonance imaging (MRI) revealed occlusion of the left internal carotid artery (ICA) and acute brain infarctions in both hemispheres, and a blood examination indicated inflammation. Gadolinium enhancement was observed in the walls of the temporal arteries and ICAs. After we diagnosed giant cell arteritis (GCA) by a temporal artery biopsy, aspirin and corticosteroids were administered. The typical symptoms of GCA, such as jaw claudication and temporal artery tenderness, were absent during the entire clinical course, and the findings of contrast-enhanced MRI contributed to the diagnosis.
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Affiliation(s)
- Mai Kikumoto
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Shiro Aoki
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Yuji Shiga
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Naoto Kinoshita
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
- Department of Neurology, Hiroshima Prefectural Hospital, Japan
| | - Tomohisa Nezu
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Hiroki Ueno
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
| | - Koji Arihiro
- Department of Anatomical Pathology, Hiroshima University Hospital, Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Hiroshima University, Graduate School of Biomedical and Health Sciences, Japan
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Abstract
We report a case of neuromyelitis optica (NMO) that was diagnosed at the age of 90. After initially developing visual loss in the right eye, a patient was diagnosed with optic neuritis. Although treatment with methylprednisolone therapy provided relief, 3 months later she developed optic neuritis on the other side. Visual activity recovered after further administration of methylprednisolone. At the age of 91, she presented with muscle weakness of her left extremities. A cervical MRI revealed myelitis with a longitudinally extensive spinal cord lesion from the second to fifth cervical vertebrae. Anti-AQP-4 antibody was detected in her serum. She was diagnosed with NMO and treated with methylprednisolone therapy. Subsequently, she repeatedly relapsed within a short period, developing myelitis once and optic neuritis three times within a year. However, during each hospitalization period, methylprednisolone therapy proved to be effective for relieving her symptoms. As NMO patients with onsets over 60 years of the age have been reported, medical practitioners should be aware that disease onset can occur at extremely older ages, such as 90 years old.
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Affiliation(s)
- Mai Kikumoto
- Department of Neurology, Hiroshima City Asa Citizens Hospital
| | - Megumi Nonaka
- Department of Neurology, Hiroshima City Asa Citizens Hospital
| | - Jun Takeshita
- Department of Neurology, Hiroshima City Asa Citizens Hospital
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8
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Nagai M, Kikumoto M, Ohshita T, Kato M, Yamashita H, Dote K. Letter to the Editor Regarding “Autonomic Function in Insular Glioma: An Exploratory Study”. World Neurosurg 2018; 119:461. [DOI: 10.1016/j.wneu.2018.07.281] [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: 07/29/2018] [Accepted: 07/30/2018] [Indexed: 11/24/2022]
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Kojima H, Kikumoto M, Sakakibara H, Oiwa K. Mechanical Properties of a Single-Headed Processive Motor, Inner-Arm Dynein Subspecies-c of ChlamydomonasStudied at the Single Molecule Level. J Biol Phys 2013; 28:335-45. [PMID: 23345779 DOI: 10.1023/a:1020300319224] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [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: 11/12/2022] Open
Abstract
Dynein from inner arms of Chlamydomonasflagella contains sevendistinct subspecies, a through g. Several lines of evidence suggest thesesubspecies play important roles in generating flagellar beating and thatthe different subspecies are functionally diverse. To evaluate theirroles and diversity, the mechanical properties of subspecies-c, which isa single-headed motor, were examined using optical trap nanometry. Apolystyrene bead coated with a small number of subspecies-c moleculeswas captured with the optical trap and brought into contact with amicrotubule fixed to a coverslip. Movements of the bead were measured bya quadrant photodiode sensor with sub-nanometer- and millisecond-resolution.Beads carrying a single active subspecies-c molecule moved processivelyalong the microtubules in 8-nm steps but slipped backwards under highloads. Force-velocity relationships of single subspecies-c molecules werealmost linear and the shapes of the normalized curves at 5 μM and 100μM ATP were similar. These results indicate that dynein subspecies-cfunctions in a very different way from conventional motor proteins, suchas myosin and kinesin, and has properties that could produceself-oscillation in vivo.
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Affiliation(s)
- H Kojima
- Communications Research Laboratory, Kansai Advanced Research Center, Iwaoka, Kobe, 651-2492 Japan
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Kurachi M, Kikumoto M, Tashiro H, Komiya Y, Tashiro T. Real-time observation of the disassembly of stable neuritic microtubules induced by laser transection: possible mechanisms of microtubule stabilization in neurites. Cell Motil Cytoskeleton 2000; 42:87-100. [PMID: 10215425 DOI: 10.1002/(sici)1097-0169(1999)42:2<87::aid-cm1>3.0.co;2-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
By dissolving the membrane with detergent perfusion, we have shown that the established neurites of dorsal root ganglion cells cultured for more than 5 days contained microtubules which persisted outside the cell for a few minutes to more than 1h [Tashiro et al., 1997: J. Neurosci. Res. 50:81-93]. To investigate their stabilization mechanism, we transected the exposed microtubules by laser microbeam irradiation and observed their length changes with video-enhanced differential interference contrast microscopy. Microtubule fragments started to shorten on both sides of the transection site. more rapidly from the newly generated plus ends than from the minus ends. The maximal rate as well as the pattern of shortening correlated with the time of transection; microtubules transected later than 30 min after membrane removal shortened at rates less than 20 microm/min and typically with intermittent pauses, while the more labile microtubules included in the earlier transections shortened continuously at higher rates. Microtubules in neurites were thus stabilized by 1) stopping disassembly at local sites including the plus ends, and 2) slowing disassembly along the length. Transection also suggested the presence of specialized points along microtubules which are involved in anchoring microtubules to the substratum. Cell Motil. Cytoskeleton 42:87-100, 1999.
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Affiliation(s)
- M Kurachi
- Laboratory for Photo-Biology, Photodynamics Research Center, Institute of Physical and Chemical Research (RIKEN), Miyagi, Japan.
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Oiwa K, Eccleston JF, Anson M, Kikumoto M, Davis CT, Reid GP, Ferenczi MA, Corrie JE, Yamada A, Nakayama H, Trentham DR. Comparative single-molecule and ensemble myosin enzymology: sulfoindocyanine ATP and ADP derivatives. Biophys J 2000; 78:3048-71. [PMID: 10827983 PMCID: PMC1300888 DOI: 10.1016/s0006-3495(00)76843-3] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
Single-molecule and macroscopic reactions of fluorescent nucleotides with myosin have been compared. The single-molecule studies serve as paradigms for enzyme-catalyzed reactions and ligand-receptor interactions analyzed as individual stochastic processes. Fluorescent nucleotides, called Cy3-EDA-ATP and Cy5-EDA-ATP, were derived by coupling the dyes Cy3.29.OH and Cy5.29.OH (compounds XI and XIV, respectively, in, Bioconjug. Chem. 4:105-111)) with 2'(3')-O-[N-(2-aminoethyl)carbamoyl]ATP (EDA-ATP). The ATP(ADP) analogs were separated into their respective 2'- and 3'-O-isomers, the interconversion rate of which was 30[OH(-)] s(-1) (0.016 h(-1) at pH 7.1) at 22 degrees C. Macroscopic studies showed that 2'(3')-O-substituted nucleotides had properties similar to those of ATP and ADP in their interactions with myosin, actomyosin, and muscle fibers, although the ATP analogs did not relax muscle as well as ATP did. Significant differences in the fluorescence intensity of Cy3-nucleotide 2'- and 3'-O-isomers in free solution and when they interacted with myosin were evident. Single-molecule studies using total internal reflection fluorescence microscopy showed that reciprocal mean lifetimes of the nucleotide analogs interacting with myosin filaments were one- to severalfold greater than predicted from macroscopic data. Kinetic and equilibrium data of nucleotide-(acto)myosin interactions derived from single-molecule microscopy now have a biochemical and physiological framework. This is important for single-molecule mechanical studies of motor proteins.
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Affiliation(s)
- K Oiwa
- Kansai Advanced Research Center, Communications Research Laboratory, Kobe 651-2492, Japan
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Abstract
We tested the stability of microtubules (MTs) in the neurites of cultured dorsal root ganglion cells by dissolving the cytoplasmic membrane with detergent and exposing them to defined extracellular medium under observation with a video-enhanced differential interference contrast (DIC) microscope. Smooth cytoplasmic filaments visualized after membrane removal were suggested to be MTs by the preservation of all of the filaments in the presence but not in the absence of taxol. They were further confirmed to be MTs by specific immunostaining with anti-tubulin antibody. A significant number of MTs in the established neurites of 6-day-old cultures remained longer than 10 min after membrane removal while MTs in the Schwann cell processes or in the distal regions of the growth cone-bearing neurites of 3-day-old cultures disappeared within 2 min. A population of very stable MTs persisting longer than 30 min was also found specifically in the 6-day-old cultures. Association with other structures or bundling seemed to stabilize the MTs to some degree. The most stable MTs, however, were not associated with some structure along the length but were mainly anchored at points, suggesting that specific point attachments may be another important mechanism operating in MT stabilization. The present method is thus capable of directly demonstrating the unusual stability of neuritic MTs, and provides a new system for further investigation on the mechanism of stabilization.
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Affiliation(s)
- T Tashiro
- Department of Molecular and Cellular Neurobiology, Gunma University School of Medicine, Gunma-ken, Japan
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