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Kimura K, Murase N, Nagao Y, Nozaki M, Fukumizu M, Kita Y, Hayashi M, Hoshino K. Pre-movement gating of somatosensory evoked potentials in tourette syndrome. Brain Dev 2023; 45:324-331. [PMID: 36878743 DOI: 10.1016/j.braindev.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Revised: 01/29/2023] [Accepted: 02/12/2023] [Indexed: 03/08/2023]
Abstract
OBJECTIVE Tourette syndrome (TS) is a neurobehavioral disorder characterized by motor and vocal tics. Simple tics are purposeless involuntary movements that spontaneously resolve during middle adolescence. Complex tics appear to be semi-voluntary movements that may become intractable when associated with obsessive-compulsive disorder (OCD). Sensory tics or urges preceded by tics suggest sensorimotor processing impairment in TS. We aimed to clarify its pathophysiology by exploring the pre-movement gating (attenuation) of somatosensory evoked potentials (SEPs). METHODS We examined 42 patients (aged 9-48 years), 4 of whom underwent follow-up assessment, along with 19 healthy controls. We defined patients with only simple tics as TS-S and patients with complex tics as TS-C. Pre-movement gating of SEPs was assessed using a previously described method. Frontal N30 (FrN30) amplitudes were compared between pre-movement and resting states. The gating ratio of pre-movement/resting amplitude of the FrN30 component was assessed: the larger the ratio, the less the gating. RESULTS The gating ratio for TS-C patients was larger than that of TS-S patients and healthy controls, but a statistical difference between TS-S and TS-C appeared after 15 years and over (p < 0.001). There were no significant differences in the gating ratio between TS-S patients and healthy controls. The gating ratio was related to the severity of OCD (p < 0.05). CONCLUSION Sensorimotor processing was preserved for simple tics but impaired in complex tics, specifically after middle adolescence. Our study supports an age-dependent dysfunction of both motor and non-motor cortico-striato-thalamo-cortical circuits in complex tics. SEP gating seems promising as a tool for assessing age-dependent sensorimotor disintegration in TS.
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Affiliation(s)
- Kazue Kimura
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan.
| | - Nagako Murase
- Department of Neurology, National Hospital Organization, Nara Medical Center, Nara, Japan
| | - Yuri Nagao
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan
| | - Maki Nozaki
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan
| | - Michio Fukumizu
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan
| | - Yosuke Kita
- Department of Psychology, Faculty of Letters, Keio University, Tokyo, Japan; Cognitive Brain Research Unit (CBRU), Faculty of Medicine, University of Helsinki, Helsinki, Finland
| | | | - Kyoko Hoshino
- Segawa Memorial Neurological Clinic for Children, Tokyo, Japan
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Murase N, Hirabayashi H. [Basal Ganglia and Circuit Function:How Does the Ablation or Deep Brain Stimulation(DBS)Work?]. No Shinkei Geka 2021; 49:712-723. [PMID: 34376603 DOI: 10.11477/mf.1436204449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
The basal ganglia(BG)is composed of four parallel loops: the motor, oculomotor, associative, and limbic loops. The motor loop starts from the cortex, travels through the BG and thalamus, and returns to the same area of the cortex with somatotopic organization. The striatum is the major input nucleus of the cortex, and the internal segment of the globus pallidus(GPi)is the main output nucleus. BG is explained by the direct and indirect pathways, and these excitatory or inhibitory pathways are used for several disease models. In Parkinson's disease(PD), dopamine deficiency acts on both direct and indirect pathways to cause the neuronal activity of GPi to becomes disinhibited. Pallidotomy, an effective surgery to improve Parkinsonism, aimed to destroy this hyperactive state. This is based on the rate model. However, a simian PD model with MPTP-treated monkeys exhibited increased GPi activity during effective stimulation of subtalamic nucleus(STN)-DBS, which makes it difficult to explain the pathophysiology of PD based only on the rate model. Instead, the alterative model is now widely prevailing. Local field potentials recorded from the DBS leads implanted in GPi and/or STN uncovered the abnormally synchronized activity in the β range(β oscillation)and abnormal co-synchronization between these nuclei, which is believed to be important in the pathophysiology of PD.
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Affiliation(s)
- Nagako Murase
- Department of Neurology, National Hospital Organization Nara Medical Center
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Murase N, Goto M, Kohara N, Kimura J. Sustained atypical myokymia of the abductor pollicis brevis with a focal slowing of the median nerve motor axons at the wrist. Clin Neurophysiol Pract 2020; 6:36-40. [PMID: 33490741 PMCID: PMC7808925 DOI: 10.1016/j.cnp.2020.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 11/15/2020] [Accepted: 11/26/2020] [Indexed: 11/04/2022] Open
Abstract
OBJECTIVE We report a case of sustained atypical myokymia associated with short bursts of neuromyotonic discharges involving the abductor pollicis brevis (APB) muscle and describe a useful way of detecting a focal slowing involving a small number of median nerve motor fibers with a concentric needle using the filter setting for single fiber electromyography (EMG). METHODS AND RESULTS A 62-year-old woman developed right thumb twitches at regular interval of 1.7-3.3 s (0.6-0.3 Hz), which continued for more than four months. Muscle twitches remained the same during altered hand position, psychological stress, or sleep. A concentric needle inserted in the active zone of the APB muscle revealed myokymic bursts with a characteristic of neuromyotonic discharges. Inching study, stimulating at 5 mm increment along the median nerve and recording with a concentric needle using a filter setting for single fiber EMG, revealed a focal slowing of the motor fibers at a point 5-10 mm distal from the distal crease of the wrist, an entrapment site occasionally seen in the carpal tunnel syndrome. One injection of botulinum toxin type A eliminated the myokymia, which then recurred two and a half years later, showing less prominent muscle twitches. CONCLUSIONS Sustained atypical myokymia seen in our case represented bursts of neuromyotonic discharges originated from a focal demyelinating lesion involving a few median nerve motor fibers.
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Affiliation(s)
- Nagako Murase
- Department of Neurology, National Hospital Organization, Kyoto Medical Center, 1-1 Mukoubata-cho, Fukakusa, Fushimi-ku, Kyoto City, Kyoto 612-8555, Japan
| | - Masahiro Goto
- Department of Neurology, National Hospital Organization, Kyoto Medical Center, 1-1 Mukoubata-cho, Fukakusa, Fushimi-ku, Kyoto City, Kyoto 612-8555, Japan
| | - Nobuo Kohara
- Department of Neurology, Kobe City Medical Center General Hospital, 1-1, 2 cho-me, Minamimachi, Minatojima, Chuou-ku, Kobe City, Kobe 650-0047, Japan
| | - Jun Kimura
- Department of Neurology, Division of Clinical Neurophysiology, University of Iowa Health Center, 200 Hawkins Drive, Iowa City, IA 52242, USA
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Hayashida A, Li Y, Yoshino H, Daida K, Ikeda A, Ogaki K, Fuse A, Mori A, Takanashi M, Nakahara T, Yoritaka A, Tomizawa Y, Furukawa Y, Kanai K, Nakayama Y, Ito H, Ogino M, Hattori Y, Hattori T, Ichinose Y, Takiyama Y, Saito T, Kimura T, Aizawa H, Shoji H, Mizuno Y, Matsushita T, Sato M, Sekijima Y, Morita M, Iwasaki A, Kusaka H, Tada M, Tanaka F, Sakiyama Y, Fujimoto T, Nagara Y, Kashihara K, Todo H, Nakao K, Tsuruta K, Yoshikawa M, Hara H, Yokote H, Murase N, Nakamagoe K, Tamaoka A, Takamiya M, Morimoto N, Nokura K, Kako T, Funayama M, Nishioka K, Hattori N. The identified clinical features of Parkinson's disease in homo-, heterozygous and digenic variants of PINK1. Neurobiol Aging 2020; 97:146.e1-146.e13. [PMID: 32713623 DOI: 10.1016/j.neurobiolaging.2020.06.017] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [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: 03/05/2020] [Revised: 06/22/2020] [Accepted: 06/25/2020] [Indexed: 02/04/2023]
Abstract
To investigate the prevalence and genotype-phenotype correlations of phosphatase and tensin homolog induced putative kinase 1 (PINK1) variants in Parkinson's disease (PD) patients, we analyzed 1700 patients (842 familial PD and 858 sporadic PD patients from Japanese origin). We screened the entire exon and exon-intron boundaries of PINK1 using Sanger sequencing and target sequencing by Ion torrent system. We identified 30 patients with heterozygous variants, 3 with homozygous variants, and 3 with digenic variants of PINK1-PRKN. Patients with homozygous variants presented a significantly younger age at onset than those with heterozygous variants. The allele frequency of heterozygous variants in patients with age at onset at 50 years and younger with familial PD and sporadic PD showed no differences. [123I]meta-iodobenzylguanidine (MIBG) myocardial scintigraphy indicated that half of patients harboring PINK1 heterozygous variants showed a decreased heart to mediastinum ratio (12/23). Our findings emphasize the importance of PINK1 variants for the onset of PD in patients with age at onset at 50 years and younger and the broad spectrum of clinical symptoms in patients with PINK1 variants.
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Affiliation(s)
- Arisa Hayashida
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Yuanzhe Li
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroyo Yoshino
- Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Kensuke Daida
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Aya Ikeda
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Kotaro Ogaki
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Atsuhito Fuse
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Akio Mori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Masashi Takanashi
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Toshiki Nakahara
- Department of Neurology, Juntendo Tokyo Koto Geriatric Medical Center, Tokyo, Japan
| | - Asako Yoritaka
- Department of Neurology, Juntendo University Koshigaya Hospital, Saitama, Japan
| | - Yuji Tomizawa
- Department of Neurology, Juntendo Tokyo Koto Geriatric Medical Center, Tokyo, Japan
| | - Yoshiaki Furukawa
- Department of Neurology, Juntendo Tokyo Koto Geriatric Medical Center, Tokyo, Japan
| | - Kazuaki Kanai
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Department of Neurology, Fukushima Medical University, Fukushima, Japan
| | - Yoshiaki Nakayama
- Department of Neurology, Wakayama Medical University, Wakayama Prefecture, Japan
| | - Hidefumi Ito
- Department of Neurology, Wakayama Medical University, Wakayama Prefecture, Japan
| | - Mieko Ogino
- International University of Health and Welfare, School of Medicine, Office of Medical Education, Chiba, Japan
| | | | | | - Yuta Ichinose
- Department of Neurology, University of Yamanashi, Yamanashi, Japan
| | | | - Tsukasa Saito
- Department of Neurology, National Hospital Organization Asahikawa Medical Center, Hokkaido, Japan
| | - Takashi Kimura
- Department of Neurology, National Hospital Organization Asahikawa Medical Center, Hokkaido, Japan
| | - Hitoshi Aizawa
- Department of Neurology, Tokyo Medical University, Tokyo, Japan
| | - Hiroshi Shoji
- Division of Neurology, St. Mary's Hospital, Fukuoka, Japan
| | - Yuri Mizuno
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takuya Matsushita
- Department of Neurology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Mitsuto Sato
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
| | - Yoshiki Sekijima
- Department of Medicine (Neurology and Rheumatology), Shinshu University School of Medicine, Matsumoto, Japan
| | - Masayo Morita
- Department of Neurology, Jikei University Katsushika Medical Center, Tokyo, Japan
| | - Akio Iwasaki
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Hirofumi Kusaka
- Department of Neurology, Kansai Medical University, Osaka, Japan
| | - Mikiko Tada
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Fumiaki Tanaka
- Department of Neurology and Stroke Medicine, Yokohama City University Graduate School of Medicine, Kanagawa, Japan
| | - Yusuke Sakiyama
- Department of Neurology and Geriatrics, Kagoshima University Graduate School of Medical and Dental Sciences, Kagoshima, Japan
| | - Takeshi Fujimoto
- Department of Neurology, Sasebo City General Hospital, Nagasaki, Japan
| | | | | | - Hiroyuki Todo
- Department of RNA Biology and Neuroscience, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kouichi Nakao
- Brain and Nerve Center, Junwakai Memorial Hospital, Miyazaki, Japan
| | - Kazuhito Tsuruta
- Brain and Nerve Center, Junwakai Memorial Hospital, Miyazaki, Japan
| | - Masaaki Yoshikawa
- Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan
| | - Hideo Hara
- Division of Neurology, Department of Internal Medicine, Saga University Faculty of Medicine, Saga, Japan
| | - Hiroaki Yokote
- Department of Neurology, Nitobe Memorial Nakano General Hospital, Tokyo, Japan
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Kiyotaka Nakamagoe
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Akira Tamaoka
- Department of Neurology, Division of Clinical Medicine, Faculty of Medicine, University of Tsukuba, Ibaraki, Japan
| | - Motonori Takamiya
- Department of Neurology, Kagawa Prefectural Central Hospital, Kagawa, Japan
| | - Nobutoshi Morimoto
- Department of Neurology, Kagawa Prefectural Central Hospital, Kagawa, Japan
| | - Kazuya Nokura
- Department of Neurology, Fujita Health University, Bantane Hospital, Aichi, Japan
| | - Tetsuharu Kako
- Department of Neurology, Fujita Health University, Bantane Hospital, Aichi, Japan
| | - Manabu Funayama
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan
| | - Kenya Nishioka
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan.
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan; Research Institute for Diseases of Old Age, Graduate School of Medicine, Juntendo University, Tokyo, Japan.
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Kaido T, Hirabayashi H, Murase N, Sasaki R, Shimokawara T, Nagata K, Bando C, Aono Y. Deep slow nasal respiration with tight lip closure for immediate attenuation of severe tics. J Clin Neurosci 2020; 77:67-74. [PMID: 32417125 DOI: 10.1016/j.jocn.2020.05.037] [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: 04/10/2020] [Accepted: 05/03/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Severe intractable tics, which are associated with Tourette syndrome and chronic tic disorder (TS/CTD), severely affect the quality of life. Common less-invasive treatments are often unable to attenuate tics with deep brain stimulation currently being the only effective treatment. We aimed to assess the anti-tic effect of deep slow nasal respiration with tight lip closure using patients with TS/CTD. METHODS We retrospectively analyzed 10 consecutive patients (9 men, 1 woman; 23-41 years old). We instructed the patients to perform the procedure for 120 s and to obtain a video recording of before and during the procedure. The videos were used to count tics and determine lip competency or incompetency. The counted tics were rated using the modified Rush Video Rating Scale. RESULTS Compared with before the procedure, there were significantly lower frequencies of motor and phonic tics, as well as video scored, during the procedure. Eight patients presented with lip incompetency before the procedure and none after the procedure (P = 0.041). There were no side effects associated with the procedure. CONCLUSION Our findings indicate that deep slow nasal respiration with tight lip closure ameliorates tics in patients with TS/CTD. In accordance with our results, lip opening and oral breathing could be causes of tics, in addition to heritability. Therefore, this novel procedure could improve tics. Furthermore, our findings could contribute toward the development of tic treatments and elucidate their pathophysiology regarding the reward system, hypersensitivity, autonomic nerves, and nasal airway.
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Affiliation(s)
- Takanobu Kaido
- Department of Neurosurgery, National Hospital Organization Nara Medical Center, Nara, Japan; Anatomy and Physiology Laboratory, Department of Health and Nutrition, Osaka Shoin Women's University, Higashiosaka, Japan.
| | - Hidehiro Hirabayashi
- Department of Neurosurgery, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Ryota Sasaki
- Department of Neurosurgery, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Tatsuo Shimokawara
- Department of Neurosurgery, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Kiyoshi Nagata
- Department of Neurosurgery, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Chiaki Bando
- Department of Internal Medicine, National Hospital Organization Nara Medical Center, Nara, Japan
| | - Yuka Aono
- Anatomy and Physiology Laboratory, Department of Health and Nutrition, Osaka Shoin Women's University, Higashiosaka, Japan
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Murase N. P1-14-04. Pyramidal tract evaluation by transcranial magnetic stimulation in hereditary diffuse leukoencephalopathy with axonal spheroids (HDLS). Clin Neurophysiol 2019. [DOI: 10.1016/j.clinph.2019.06.177] [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: 11/17/2022]
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Ohtani R, Nirengi S, Nakamura M, Murase N, Sainouchi M, Kuwata Y, Takata M, Masuda Y, Kotani K, Sakane N. High-Density Lipoprotein Subclasses and Mild Cognitive Impairment: Study of Outcome and aPolipoproteins in Dementia (STOP-Dementia)1. J Alzheimers Dis 2019; 66:289-296. [PMID: 30248050 DOI: 10.3233/jad-180135] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND High-density lipoprotein (HDL) containing apolipoprotein A-I is associated with the pathogenesis of Alzheimer's disease (AD). HDL particle size is modified in the presence of pathological conditions, while the significance of the HDL particle size remains controversial. OBJECTIVE The aim of this study was to investigate the HDL lipoprotein subclasses in mild cognitive impairment (MCI) and AD. METHODS This cross-sectional study included 20 AD patients, 17 MCI patients, and 17 age-matched controls without cognitive impairment, selected from the database of the Study of Outcome and aPolipoproteins in Dementia (STOP-Dementia) registry. The diagnoses of AD and MCI were performed by expert neurologists according to the Diagnostic and Statistical Manual of Mental Disorders-Fifth Edition criteria. Serum HDL subclasses were measured by electrophoretic separation of lipoproteins using the Lipoprint System. The neutrophil-lymphocyte ratio (NLR), a marker of inflammation, was calculated by dividing the neutrophil count by the lymphocyte count. RESULTS Small-sized HDL particle levels in the MCI group were significantly higher than in the control group, although there was no difference in serum HDL-cholesterol levels between MCI and control groups. NLR in the MCI group was higher than in the control group, but this difference was non-significant (p = 0.09). There was no difference in HDL subclasses or NLR between the AD and control groups. CONCLUSION These findings suggest that HDL subclasses might be associated with the development of MCI.
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Affiliation(s)
- Ryo Ohtani
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Shinsuke Nirengi
- Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Michikazu Nakamura
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Makoto Sainouchi
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Yasuhiro Kuwata
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Masaki Takata
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Yuuichi Masuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
| | - Kazuhiko Kotani
- Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan.,Division of Community and Family Medicine, Jichi Medical University, Shimotsuke-City, Tochigi, Japan
| | - Naoki Sakane
- Division of Preventive Medicine, Clinical Research Institute, National Hospital Organization Kyoto Medical Center, Fukakusa, Kyoto, Japan
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Yasuda K, Maki T, Kimura K, Ayaki T, Sawamoto N, Murase N, Ohtani R, Takahashi R, Nakamura M. Two cases of delayed perforating artery infarction adjacent to intracranial hemorrhage. eNeurologicalSci 2019; 17:100209. [PMID: 31650047 PMCID: PMC6804496 DOI: 10.1016/j.ensci.2019.100209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 09/07/2019] [Indexed: 11/30/2022] Open
Affiliation(s)
- Ken Yasuda
- Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan,Department of Neurology, National Hospital Organization Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto 612-8555, Japan,Corresponding author at: Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan.
| | - Takakuni Maki
- Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Kimitoshi Kimura
- Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Takashi Ayaki
- Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Nobukatsu Sawamoto
- Department of Human Health Sciences, Kyoto University Graduate School of Medicine, 53 Shogoin-kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto 612-8555, Japan
| | - Ryo Ohtani
- Department of Neurology, National Hospital Organization Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto 612-8555, Japan
| | - Ryosuke Takahashi
- Department of Neurology, Kyoto University, Graduate School of Medicine, 54 Shogoin-Kawahara-cho, Sakyo-ku, Kyoto 606-8507, Japan
| | - Michikazu Nakamura
- Department of Neurology, National Hospital Organization Kyoto Medical Center, 1-1 Mukaihata-cho, Fukakusa, Fushimi-ku, Kyoto 612-8555, Japan
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Yasuda K, Ayaki T, Kawabata Y, Murase N, Ohtani R, Nakamura M. [An autopsy case after endovascular thrombectomy for cardioembolic stroke due to nonbacterial thrombotic endocarditis]. Rinsho Shinkeigaku 2019; 59:195-199. [PMID: 30930366 DOI: 10.5692/clinicalneurol.cn-001252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 73-year-old women visited emergency department because of sudden right hemiplegia. She had a history of duodenum papilla cancer terminal stage and multiple liver metastasis. On admission, diffusion weighted images revealed high intensity area at left middle cerebral artery territory. In addition, 3D-TOF MRA depicted proximal part of the left internal carotid artery. We performed endovascular thrombectomy because low platelet count met contraindication of intravenous recombinant tissue plasminogen activator therapy. Although we could get partial recanalization of middle cerebral artery occlusion after thrombectomy, the patient eventually died due to multiple organ failure. Autopsy findings showed white thrombus on mitral valve and also left middle cerebral artery occluded by similar white thrombus without infective findings. The patient was finally diagnosed with nonbacterial thrombotic endocarditis due to white thrombus on the mitral valve. We should select appropriate mechanical thrombectomy devices with a case of cerebral infarction due to nonbacterial thrombotic endocarditis because its thrombus is often white thrombus and would be hard.
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Affiliation(s)
- Ken Yasuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center.,Department of Neurology, Kyoto University, Graduate School of Medicine
| | - Takashi Ayaki
- Department of Neurology, Kyoto University, Graduate School of Medicine
| | - Yasuhiro Kawabata
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Kyoto Medical Center
| | - Ryo Ohtani
- Department of Neurology, National Hospital Organization Kyoto Medical Center
| | - Michikazu Nakamura
- Department of Neurology, National Hospital Organization Kyoto Medical Center
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Yasuda K, Murase N, Yoshinaga K, Ohtani R, Goto YI, Takahashi R, Nakamura M. Leukoencephalopathy with a case of heterozygous POLG mutation mimicking mitochondrial neurogastrointestinal encephalomyopathy (MNGIE). J Clin Neurosci 2019; 61:302-304. [DOI: 10.1016/j.jocn.2018.10.054] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 10/06/2018] [Indexed: 01/21/2023]
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Hirabayashi H, Nagata K, Shimokawara T, Sasaki R, Murase N. [(2)Deep Brain Stimulation Therapy for Parkinson Disease:STN vs. GPi]. No Shinkei Geka 2019; 47:15-26. [PMID: 30696788 DOI: 10.11477/mf.1436203892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yasuda K, Fukuda S, Nakamura M, Ohtani R, Kuwata Y, Takata M, Sainouchi M, Gotou M, Masuda Y, Kawarazaki S, Kawabata Y, Murase N, Aoki T, Yonemoto N, Akao M, Tsukahara T. Predictors of Cardioembolic Stroke in Japanese Patients with Atrial Fibrillation in the Fushimi AF Registry. Cerebrovasc Dis Extra 2018; 8:50-59. [PMID: 29788021 PMCID: PMC6006634 DOI: 10.1159/000488206] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2017] [Accepted: 03/07/2018] [Indexed: 11/28/2022] Open
Abstract
Background Large-scale clinical trials have analyzed risk factors for any ischemic stroke in patients with atrial fibrillation (AF). However, the risk factors for cardioembolic stroke (CES), specifically, have not been reported. To clarify the risk factors for CES and clinically significant cardioembolic infarction, we examined the incidence of CES and larger infarct volume (IV) (> 30 mL) CES, employing the Fushimi AF Registry, a community-based prospective cohort of AF patients in the Fushimi ward, Kyoto, Japan. Methods A total of 4,182 Fushimi AF patients were enrolled from March 2011 to December 2014. The risk factors for CES were evaluated using multivariate analysis. Results Of 4,182 patients enrolled, 3,749 patients were observed for ≥1 year. During the follow-up period (mean duration, 979 ± 7.7 days), 91/3,749 patients experienced a CES (2.43%). Significant risk factors associated with CES were older age (odds ratio [OR], 1.31; 95% confidence interval [CI], 1.01–1.72; p = 0.046), low body weight (OR, 1.30; 95% CI, 1.03–1.65; p = 0.033), sustained AF (OR, 1.67; 95% CI, 1.05–2.71; p = 0.034), and previous stroke or transient ischemic attack (TIA) (OR, 1.94; 95% CI, 1.22–3.06; p = 0.004). Predictors of a large IV were chronic kidney disease (CKD) (OR, 2.08; 95% CI, 1.09–4.05; p = 0.027) and previous stroke/TIA (OR, 2.27; 95% CI, 1.19–4.24; p = 0.011). Conclusions In this population-based cohort of Japanese patients with AF, in addition to previous stroke/TIA and older age, sustained AF and low body weight emerged as risk factors for CES, as opposed to any stroke, which may have a different risk profile. Patients with CKD or previous stroke/TIA who developed cardioembolic infarction exhibited more advanced severity. There is a need for direct oral anticoagulants that can be used safely in patients with comorbid AF and CKD.
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Affiliation(s)
- Ken Yasuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan.,Department of Neurology, Kyoto University, Graduate School of Medicine, Kyoto, Japan
| | - Shunichi Fukuda
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Michikazu Nakamura
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Ryo Ohtani
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Yasuhiro Kuwata
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Masaki Takata
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Makoto Sainouchi
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Masahiro Gotou
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Yuichi Masuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Satoru Kawarazaki
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Yasuhiro Kawabata
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Tomokazu Aoki
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Naohiro Yonemoto
- Department of Biostatistics, School of Public Health, Kyoto University, Kyoto, Japan
| | - Masaharu Akao
- Department of Cardiology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Tetsuya Tsukahara
- Department of Neurosurgery, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
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13
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Hayashi A, Murase N, Yamamoto S, Hirano K, Tsuchida R, Kuriyama Y, Masuda Y. P2-2-03. Severity classification of diabetic polyneuropathy in type 1diabetes mellitus. Clin Neurophysiol 2018. [DOI: 10.1016/j.clinph.2018.02.101] [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: 11/16/2022]
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14
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Yasuda K, Murase N, Ohtani R, Oka N, Nakamura M. [A case of chronic inflammatory demyelinating polyradiculoneuropathy, showing radicular pain due to tuberous hypertrophy of the spinal roots and plexuses after 20 years interval without relapsing sensorimotor symptoms]. Rinsho Shinkeigaku 2018; 58:21-24. [PMID: 29269693 DOI: 10.5692/clinicalneurol.cn-001073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
A 40-year-old man visited our department because of chest and back pain. He had a history of diagnosis of chronic inflammatory demyelinating polyneuropathy (CIDP) 20 years ago. He received immunosuppressive therapy and had no relapses after that. On Admission, MRI showed tuberous hypertrophy of the spinal roots, intercostal nerves, and brachial and lumbar plexuses. The genetic analysis showed no mutations in any of Charcot-Marie-Tooth related genes. He was finally diagnosed with CIDP and administration of high dose intravenous methylprednisolone relieved his chest and back pain within a few days. We present a rare case of CIDP in which showed marked enlarged spinal roots in long clinical course and have a relapse with radicular pain without sensorimotor symptoms.
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Affiliation(s)
- Ken Yasuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center.,Present Address: Department of Neurology, Kyoto University, Graduate School of Medicine
| | - Nagako Murase
- Department of Neurology, National Hospital Organization Kyoto Medical Center
| | - Ryo Ohtani
- Department of Neurology, National Hospital Organization Kyoto Medical Center
| | - Nobuyuki Oka
- Department of Neurology, National Hospital Organization Minami-Kyoto Hospital
| | - Michikazu Nakamura
- Department of Neurology, National Hospital Organization Kyoto Medical Center
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15
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Yasuda K, Fukuda S, Nakamura M, Takata M, Kuwata Y, Sainouchi M, Kawarazaki S, Murase N, Ohtani R, Aoki T, Yonemoto N, Akao M, Tsukahata T. Predictors for cardioembolic stroke in Japanese patients with atrial fibrillation: The Fushimi AF Registry. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Kuwata Y, Yoshinaga K, Matsuhashi M, Murase N, Ohtani R, Sainouchi M, Takata M, Masuda Y, Nakamura M. Disorganization of alpha-band networks in the hemisphere of the seizure FOCI revealed by functional connectivity analysis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Ohtani R, Nakamura M, Murase N, Sainouchi M, Kuwata Y, Takata M, Masuda Y, Kawabata Y, Nirengi S, Tsukahara T, Sakane N. Pre-treatment blood pressure is the predictor for hemorrhagic infarction after intravenous rt-PA. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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18
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Ricordi C, Murase N, Rastellini C, Behboo R, Demetris AJ, Starzl TE. Indefinite Survival of Rat Islet Allografts following Infusion of Donor Bone Marrow without Cytoablation. Cell Transplant 2017; 5:53-5. [PMID: 8665077 PMCID: PMC2964070 DOI: 10.1177/096368979600500110] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
We have tested the effect of donor bone marrow cell (DBMC) infusion on the survival of pancreatic islet allografts in the rat, without the use of cytoablative recipient conditioning. Lewis and diabetic Brown Norway rats were used as donors and recipients, respectively. Donor islets were placed beneath the left renal capsule. Infusion of DBMC and temporary immunosuppression followed by delayed islet transplantation resulted in indefinite survival of all islet grafts (MST >180 days). Control animals demonstrated recurrent hyperglycemia (islet allografts rejection). Donor bone marrow derived cells were detected in the spleen and cervical lymph nodes of BN recipients of LEW bone marrow but not in the recipients of islet transplants alone. Second set full thickness skin grafts were performed in normal BN and in recipients of a previously successful ITX. Donor specific skin grafts were accepted in the animals that had received DBMC 40 days before the islet allograft, while animals receiving DBMC at the time of the islet allograft rejected the donor specific skin graft similarly to the controls. However, these animals did not reject a second set donor-specific islet transplant. The results indicate that radiation conditioning of the recipients was not necessary to induce microchimerism and graft acceptance in this rodent model of islet allotransplantation.
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Affiliation(s)
- C Ricordi
- Transplantation Institute, University of Pittsburgh Medical Center, PA, USA
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19
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Kita M, Kuwata Y, Murase N, Akiyama Y, Usui T. A Novel Truncation Mutation of the PRRT2 Gene Resulting in a 16-Amino-Acid Protein Causes Self-inducible Paroxysmal Kinesigenic Dyskinesia. Mov Disord Clin Pract 2017; 4:625-628. [PMID: 30713971 DOI: 10.1002/mdc3.12500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Revised: 03/29/2017] [Accepted: 03/31/2017] [Indexed: 11/10/2022] Open
Abstract
Paroxysmal kinesigenic dyskinesia (PKD) is a sporadic or autosomal-dominant, hereditary disorder characterized by brief, recurrent attacks of involuntary movements triggered by sudden, voluntary movement that generally develops during childhood and adolescence and is typically treated with carbamazepine. The proline-rich transmembrane protein 2 (PRRT2) gene contains 4 exons that encode 340 amino acids as the major isoform, and recent research has identified PRRT2 as the primary causative gene in PKD, benign familial infantile epilepsy (BFIE), and infantile convulsions with PKD (PKD/IC). Here, the authors report the phenotype of a family with a novel p.E16X (c.46G>T) nonsense mutation of the PRRT2 gene that lacked almost a full allele. In this family, none of the individuals in the pedigree exhibited evidence of cognitive impairment: the elder brother had PKD/IC with migraine; the younger brother had PKD with ataxia; the father had PKD; both siblings experienced a sensory aura; and all 3 had a history of febrile seizures. This is the first report of a short nonsense mutation in PRRT2 and indicates that the manifestations of the disease, including other mutations to date, can be explained by haploinsufficiency and that 1 intact PRRT2 allele can allow normal cognitive development.
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Affiliation(s)
- Makoto Kita
- National Hospital Organization Kyoto Medical Center Department of Pediatrics Kyoto Japan
| | - Yasuhiro Kuwata
- National Hospital Organization Kyoto Medical Center Department of Neurology Kyoto Japan
| | - Nagako Murase
- National Hospital Organization Kyoto Medical Center Department of Neurology Kyoto Japan
| | - Yuichi Akiyama
- National Hospital Organization Kyoto Medical Center Department of Pediatrics Kyoto Japan
| | - Takeshi Usui
- Shizuoka General Hospital Department of Medical Genetics Shizuoka Japan
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20
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Demura Y, Kinoshita M, Fukuda O, Nose S, Nakano H, Juzu A, Murase N, Yamamoto K. Imbalance in multiple sclerosis and neuromyelitis optica: association with deep sensation disturbance. Neurol Sci 2016; 37:1961-1968. [PMID: 27576580 DOI: 10.1007/s10072-016-2697-4] [Citation(s) in RCA: 2] [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: 05/04/2016] [Accepted: 08/25/2016] [Indexed: 11/28/2022]
Abstract
Abnormality in balance is one of the most important causes of gait disturbance which has a direct impact to disability and medical cost in multiple sclerosis (MS) and neuromyelitis optica (NMO). However, characteristics of imbalance in these two diseases have not been fully elucidated. The aim of this study was to evaluate the degree and features of imbalance using stabilography, the degree of deep sensation disturbance using tibial nerve somatosensory evoked potentials (SEP), and their association with clinical impairment, in patients with MS and NMO. Seven NMO patients and seven MS patients with balance disturbance were examined. The relationship among stabilography measurements representing the degree and features of imbalance, height-adjusted P38 peak latency of SEP, and neurological functional disability, were analyzed. Stabilography evaluation showed a significantly severer degree of imbalance in NMO than in MS. Romberg quotient of the patients with brainstem lesions was significantly larger than those without them. In all patients, length of excursion per second significantly correlated positively with anterio-posterior-axis power spectra at intermediate frequency band. In all patients and in NMO, P38 peak latency adjusted by height significantly correlated positively with anterio-posterior-axis power spectra at intermediate frequency band. These findings suggest that the degree of imbalance of MS and NMO possibly correlate with deep sensation disturbance, which could be evaluated by anterio-posterior-axis power spectra at intermediate frequency band by stabilography. Severer imbalance in NMO than MS may be associated with the severe longitudinally extensive spinal cord lesions.
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Affiliation(s)
- Yutaka Demura
- Department of Clinical Laboratory, Utano National Hospital, National Hospital Organization, Kyoto, Japan
- Department of Clinical Laboratory, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Masako Kinoshita
- Department of Neurology, Utano National Hospital, National Hospital Organization, 8 Ondoyama-Cho, Narutaki, Ukyoku, Kyoto, 616-8255, Japan.
| | - Osamu Fukuda
- Department of Clinical Laboratory, Utano National Hospital, National Hospital Organization, Kyoto, Japan
| | - Shouzou Nose
- Department of Clinical Laboratory, Utano National Hospital, National Hospital Organization, Kyoto, Japan
| | - Hitoshi Nakano
- Department of Neurology, Utano National Hospital, National Hospital Organization, 8 Ondoyama-Cho, Narutaki, Ukyoku, Kyoto, 616-8255, Japan
| | - Akira Juzu
- Department of Clinical Laboratory, Utano National Hospital, National Hospital Organization, Kyoto, Japan
| | - Nagako Murase
- Department of Neurology, Kyoto Medical Center, National Hospital Organization, Kyoto, Japan
| | - Kenji Yamamoto
- Department of Neurology, Utano National Hospital, National Hospital Organization, 8 Ondoyama-Cho, Narutaki, Ukyoku, Kyoto, 616-8255, Japan
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21
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Yasuda K, Sainouchi M, Goto M, Murase N, Ohtani R, Nakamura M. [A case of myeloperoxidase anti-neutrophil cytoplasmic antibody (MPO-ANCA)-associated hypertrophic pachymeningitis presenting with multiple cranial nerve palsies and diabetes insipidus]. Rinsho Shinkeigaku 2016; 56:334-337. [PMID: 27098904 DOI: 10.5692/clinicalneurol.cn-000859] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A 61-year-old woman developed hearing difficulties and became thirsty after experiencing cold symptoms. A neurological examination revealed a loss of odor sensation, facial palsy, dysphasia, and dysarthria. Vocal cord palsy was observed during pharyngoscopy. Brain magnetic resonance imaging (MRI) showed a thickened pituitary stalk and swelling of the pituitary gland, but no high signal intensity regions were seen in the posterior portion of the pituitary gland. Gadolinium-enhanced MRI demonstrated a thickened dura mater over the anterior cranial fossa. A biopsy specimen of the thickened dura mater showed fibrosis, granulomatous inflammation, and necrotic foci. Blood tests detected myeloperoxidase anti-neutrophil cytoplasmic antibody (MPO-ANCA). The patient's urine osmolarity was low even though she exhibited hypernatremia. We diagnosed her with hypertrophic pachymeningitis associated with MPO-ANCA and diabetes insipidus. The patient received two courses of 5-day high-dose intravenous methylprednisolone (1.0 g/day), and was subsequently administered oral prednisolone, which gradually relieved her symptoms. However, the patient's symptoms recurred despite the high-dose prednisolone treatment. It was difficult to control the patient's symptoms in this case with oral prednisolone monotherapy, but combined treatment with cyclosporine resulted in sustained remission. It is considered that patients with MPO-ANCA-positive hypertrophic pachymeningitis require combination therapy with prednisolone and immunosuppressive agents at an early stage.
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Affiliation(s)
- Ken Yasuda
- Department of Neurology, National Hospital Organization Kyoto Medical Center
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22
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Kinoshita M, Murase N, Sawamoto N, Endo T, Kawamura M, Kanda M, Fukuyama H, Shibasaki H, Takahashi R, Ikeda A. ID 370 – Impaired central processing in pain perception in a patient with insensitivity to pain; evaluation by laser-evoked potential and pain PET. Clin Neurophysiol 2016. [DOI: 10.1016/j.clinph.2015.11.176] [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]
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23
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Murase N, Cengiz B, Rothwell JC. Inter-individual Variation in the After-effect of Paired Associative Stimulation can be Predicted From Short-interval Intracortical Inhibition With the Threshold Tracking Method. Brain Stimul 2015; 8:105-13. [DOI: 10.1016/j.brs.2014.09.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2014] [Revised: 08/05/2014] [Accepted: 09/18/2014] [Indexed: 11/16/2022] Open
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24
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Bottino R, Wijkstrom M, van der Windt D, Hara H, Ezzelarab M, Murase N, Bertera S, He J, Phelps C, Ayares D, Cooper D, Trucco M. Pig-to-monkey islet xenotransplantation using multi-transgenic pigs. Am J Transplant 2014; 14:2275-87. [PMID: 25220221 PMCID: PMC4169326 DOI: 10.1111/ajt.12868] [Citation(s) in RCA: 124] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Revised: 05/28/2014] [Accepted: 06/07/2014] [Indexed: 01/25/2023]
Abstract
The generation of pigs with genetic modifications has significantly advanced the field of xenotransplantation. New genetically engineered pigs were produced on an α1,3-galactosyltransferase gene-knockout background with ubiquitous expression of human CD46, with islet beta cell-specific expression of human tissue factor pathway inhibitor and/or human CD39 and/or porcine CTLA4-lg. Isolated islets from pigs with 3, 4 or 5 genetic modifications were transplanted intraportally into streptozotocin-diabetic, immunosuppressed cynomolgus monkeys (n = 5). Immunosuppression was based on anti-CD154 mAb costimulation blockade. Monitoring included features of early islet destruction, glycemia, exogenous insulin requirement and histopathology of the islets at necropsy. Using these modified pig islets, there was evidence of reduced islet destruction in the first hours after transplantation, compared with two series of historical controls that received identical therapy but were transplanted with islets from pigs with either no or only one genetic modification. Despite encouraging effects on early islet loss, these multi-transgenic islet grafts did not demonstrate consistency in regard to long-term success, with only two of five demonstrating function beyond 5 months.
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Affiliation(s)
- R. Bottino
- Division of Immunogenetics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M. Wijkstrom
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - D.J. van der Windt
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - H. Hara
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M. Ezzelarab
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - N. Murase
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - S. Bertera
- Division of Immunogenetics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - J. He
- Division of Immunogenetics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - C. Phelps
- Revivicor, Inc., Blacksburg, VA, USA
| | - D. Ayares
- Revivicor, Inc., Blacksburg, VA, USA
| | - D.K.C. Cooper
- Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - M. Trucco
- Division of Immunogenetics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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Strigaro G, Hamada M, Murase N, Cantello R, Rothwell JC. Interaction Between Different Interneuron Networks Involved in Human Associative Plasticity. Brain Stimul 2014; 7:658-64. [DOI: 10.1016/j.brs.2014.05.010] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Revised: 05/31/2014] [Accepted: 05/31/2014] [Indexed: 10/25/2022] Open
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26
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Murase N, Cengiz B, Rothwell J. P1074: The role of somatosensory input in paired associative stimulation. Clin Neurophysiol 2014. [DOI: 10.1016/s1388-2457(14)51103-0] [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]
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27
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Yokota S, Kimura S, Klune J, Du Q, Dou L, Murase N, Tsung A, Geller D. Interferon Regulatory Factor-1 (IRF-1) Contributes to Hepatic Ischemia Reperfusion Injury in Allogeneic Liver Transplantation. J Surg Res 2014. [DOI: 10.1016/j.jss.2013.11.512] [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: 10/25/2022]
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28
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Ezzelarab M, Zahorchak A, Lu L, Morelli A, Chalasani G, Demetris A, Lakkis F, Wijkstrom M, Murase N, Humar A, Shapiro R, Cooper D, Thomson A. Regulatory dendritic cell infusion prolongs kidney allograft survival in nonhuman primates. Am J Transplant 2013; 13:1989-2005. [PMID: 23758811 PMCID: PMC4070451 DOI: 10.1111/ajt.12310] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2013] [Revised: 04/03/2013] [Accepted: 04/16/2013] [Indexed: 01/25/2023]
Abstract
We examined the influence of regulatory dendritic cells (DCreg), generated from cytokine-mobilized donor blood monocytes in vitamin D3 and IL-10, on renal allograft survival in a clinically relevant rhesus macaque model. DCreg expressed low MHC class II and costimulatory molecules, but comparatively high levels of programmed death ligand-1 (B7-H1), and were resistant to pro-inflammatory cytokine-induced maturation. They were infused intravenously (3.5-10 × 10(6) /kg), together with the B7-CD28 costimulation blocking agent CTLA4Ig, 7 days before renal transplantation. CTLA4Ig was given for up to 8 weeks and rapamycin, started on Day -2, was maintained with tapering of blood levels until full withdrawal at 6 months. Median graft survival time was 39.5 days in control monkeys (no DC infusion; n = 6) and 113.5 days (p < 0.05) in DCreg-treated animals (n = 6). No adverse events were associated with DCreg infusion, and there was no evidence of induction of host sensitization based on circulating donor-specific alloantibody levels. Immunologic monitoring also revealed regulation of donor-reactive memory CD95(+) T cells and reduced memory/regulatory T cell ratios in DCreg-treated monkeys compared with controls. Termination allograft histology showed moderate combined T cell- and Ab-mediated rejection in both groups. These findings justify further preclinical evaluation of DCreg therapy and their therapeutic potential in organ transplantation.
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Affiliation(s)
- M. Ezzelarab
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - A.F. Zahorchak
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - L. Lu
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - A.E. Morelli
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - G. Chalasani
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine,Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - A.J. Demetris
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine,Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - F.G. Lakkis
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - M. Wijkstrom
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - N. Murase
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - A. Humar
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - R. Shapiro
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - D.K.C. Cooper
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine
| | - A.W. Thomson
- Starzl Transplantation Institute, Department of Surgery, University of Pittsburgh School of Medicine,Department of Immunology, University of Pittsburgh School of Medicine, Pittsburgh, PA,Corresponding author: Angus W. Thomson, PhD DSc, University of Pittsburgh School of Medicine, 200 Lothrop Street, W1540 BST, Pittsburgh, PA 15261, Phone: (412) 624-6392,
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29
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Hayashi M, Amino H, Kita K, Murase N. Cryopreservation of nematode Caenorhabditis elegans in the adult stage. Cryo Letters 2013; 34:388-395. [PMID: 23995406] [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: 06/02/2023]
Abstract
Cryopreservation of nematode Caenorhabditis elegans in the adult stage is of importance as the nematode is a powerful research model organism. In this study, we applied the protocol previously established for cryopreservation of the L4 nematode to the adult one, and achieved a survival rate of 84%. When ice seeding was induced with bacteria P. syringae directly added to the nematode suspension instead of using a pre-cooled steel sticking needle, comparable survival rate was obtained after thawing. Moreover, a simple freezing device composed of a polystyrene foam box surrounded by a Dewar vessel put in a deep freezer was developed for a practical use. This simple method obtained a survival rate of 69 ± 4% for the adult nematode after thawing.
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Affiliation(s)
- M Hayashi
- School of Science and Engineering, Tokyo Denki University, Hatoyama, Saitama, Japan.
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How R, Klune J, Kimura S, Yokota S, Spadaro A, Bartels C, Du Q, Tsung A, Murase N, Geller D. Interferon Regulatory Factor-1 (IRF-1) Upregulates the Pro-Apoptotic Protein XIAP-Associated Factor-1 (XAF-1) In Liver Transplant I/R Injury. J Surg Res 2013. [DOI: 10.1016/j.jss.2012.10.502] [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: 11/16/2022]
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Cengiz B, Murase N, Rothwell JC. Opposite effects of weak transcranial direct current stimulation on different phases of short interval intracortical inhibition (SICI). Exp Brain Res 2013; 225:321-31. [DOI: 10.1007/s00221-012-3369-0] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 12/05/2012] [Indexed: 12/12/2022]
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Abu-Elmagd KM, Wu G, Costa G, Lunz J, Martin L, Koritsky DA, Murase N, Irish W, Zeevi A. Preformed and de novo donor specific antibodies in visceral transplantation: long-term outcome with special reference to the liver. Am J Transplant 2012; 12:3047-60. [PMID: 22947059 DOI: 10.1111/j.1600-6143.2012.04237.x] [Citation(s) in RCA: 141] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Despite improvement in early outcome, rejection particularly chronic allograft enteropathy continues to be a major barrier to long-term visceral engraftment. The potential role of donor specific antibodies (DSA) was examined in 194 primary adult recipients. All underwent complement-dependent lymphocytotoxic crossmatch (CDC-XM) with pre- and posttransplant solid phase HLA-DSA assay in 156 (80%). Grafts were ABO-identical with random HLA-match. Liver was included in 71 (37%) allografts. Immunosuppression was tacrolimus-based with antilymphocyte recipient pretreatment in 150 (77%). CDC-XM was positive in 55 (28%). HLA-DSA was detectable before transplant in 49 (31%) recipients with 19 continuing to have circulating antibodies. Another 19 (18%) developed de novo DSA. Ninety percent of patients with preformed DSA harbored HLA Class-I whereas 74% of recipients with de novo antibodies had Class-II. Gender, age, ABO blood-type, cold ischemia, splenectomy and allograft type were significant DSA predictors. Preformed DSA significantly (p < 0.05) increased risk of acute rejection. Persistent and de novo HLA-DSA significantly (p < 0.001) increased risk of chronic rejection and associated graft loss. Inclusion of the liver was a significant predictor of better outcome (p = 0.004, HR = 0.347) with significant clearance of preformed antibodies (p = 0.04, OR = 56) and lower induction of de novo DSA (p = 0.07, OR = 24). Innovative multifaceted anti-DSA strategies are required to further improve long-term survival particularly of liver-free allografts.
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Affiliation(s)
- K M Abu-Elmagd
- Department of Surgery Department of Pathology, Thomas E. Starzl Transplantation Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.
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Hamada M, Murase N, Hasan A, Balaratnam M, Rothwell JC. The Role of Interneuron Networks in Driving Human Motor Cortical Plasticity. Cereb Cortex 2012; 23:1593-605. [DOI: 10.1093/cercor/bhs147] [Citation(s) in RCA: 540] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kojovic M, Bologna M, Kassavetis P, Murase N, Palomar FJ, Berardelli A, Rothwell JC, Edwards MJ, Bhatia KP. Functional reorganization of sensorimotor cortex in early Parkinson disease. Neurology 2012; 78:1441-8. [PMID: 22517098 DOI: 10.1212/wnl.0b013e318253d5dd] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Compensatory reorganization of the nigrostriatal system is thought to delay the onset of symptoms in early Parkinson disease (PD). Here we sought evidence that compensation may be a part of a more widespread functional reorganization in sensorimotor networks, including primary motor cortex. METHODS Several neurophysiologic measures known to be abnormal in the motor cortex (M1) of patients with advanced PD were tested on the more and less affected side of 16 newly diagnosed and drug-naive patients with PD and compared with 16 age-matched healthy participants. LTP-like effects were probed using a paired associative stimulation protocol. We also measured short interval intracortical inhibition, intracortical facilitation, cortical silent period, and input/output curves. RESULTS The less affected side in patients with PD had preserved intracortical inhibition and a larger response to the plasticity protocol compared to healthy participants. On the more affected side, there was no response to the plasticity protocol and inhibition was reduced. There was no difference in input/output curves between sides or between patients with PD and healthy participants. CONCLUSIONS Increased motor cortical plasticity on the less affected side is consistent with a functional reorganization of sensorimotor cortex and may represent a compensatory change that contributes to delaying onset of clinical symptoms. Alternatively, it may reflect a maladaptive plasticity that provokes symptom onset. Plasticity deteriorates as the symptoms progress, as seen on the more affected side. The rate of change in paired associative stimulation response over time could be developed into a surrogate marker of disease progression in PD.
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Affiliation(s)
- M Kojovic
- Sobell Department of Motor Neuroscience and Movement Disorders, Institute of Neurology, University College London, London, UK
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Abstract
Paired associative stimulation (PAS) is a method commonly used in human studies of motor cortex synaptic plasticity. It involves repeated pairs of electrical stimuli to the median nerve and transcranial magnetic stimulation (TMS) of the motor cortex. If the interval between peripheral and TMS stimulation is around 21–25 ms, corticospinal excitability is increased for the following 30–60 min via a long term potentiation (LTP)-like effect within the primary motor cortex. Previous work has shown that PAS depends on the present and previous levels of activity in cortex, and that it can be modified by motor learning or attention. Here we show that simultaneous transcranial direct current stimulation (TDCS; 2 mA) over the cerebellum can abolish the PAS effect entirely. Surprisingly, the effect is seen when the PAS interval is 25 ms but not when it is 21.5 ms. There are two implications from this work. First, the cerebellum influences PAS effects in motor cortex; second, LTP-like effects of PAS have at least two different mechanisms. The results are relevant for interpretation of pathological changes that have been reported in response to PAS in people with movement disorders and to changes in healthy individuals following exercise or other interventions.
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Affiliation(s)
- Masashi Hamada
- Sobell Department of Motor Neuroscience and Movement Disorders, UCL Institute of Neurology, Queen Square, London WC1N 3BG, UK.
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Osada T, Iwane H, Katsumura T, Murase N, Higuchi H, Sakamoto A, Hamaoka T, Shimomitsu T. Relationship between reduced lower abdominal blood flows and heart rate in recovery following cycling exercise. Acta Physiol (Oxf) 2012; 204:344-53. [PMID: 21838785 DOI: 10.1111/j.1748-1716.2011.02349.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
AIM To examine the blood flow (BF) response in the lower abdomen (LAB) in recovery following upright cycling exercise at three levels of relative maximum pulmonary oxygen consumption (VO(2max)) and the relationship of BF(LAB) to heart rate (HR) and target intensity. METHODS For 11 healthy subjects, BF (Doppler ultrasound) in the upper abdominal aorta (Ao) above the coeliac trunk and in the right femoral artery (RFA) was measured repeatedly for 720 s after the end of cycling exercises at target intensities of 30%, 50% and 85% VO(2max), respectively. Blood flow in the lower abdomen (BF(LAB)) can be measured by subtracting bilateral BF(FAs) (≈twofolds of BF(RFA)) from BF(Ao). Change in BF(LAB) (or BF(LAB) volume) at any point was evaluated by difference between change in BF(Ao) and in BF(FAs). Heart rate and blood pressure were also measured. RESULTS At 85% VO(2max), significant reduction in BF(LAB) by approx. 89% was shown at 90 s and remained until 360 s. At 50% VO(2max), reduction in BF(LAB) by approx. 33% was found at 90 s although it returned to pre-exercise value at 120 s. On the contrary at 30% VO(2max), BF(LAB) showed a light increase (<20%) below 70 bpm of HR. There was a close negative relationship (P < 0.05) between change in BF(LAB) and recovery HR, as well as between change in BF(LAB) volume and both recovery HR and % VO(2max). CONCLUSION This study suggests that the lower abdominal BF in recovery may be influenced by sympathetic-vagus control, and dynamics of BF(LAB) may be closely related to the level of relative exercise intensities.
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Affiliation(s)
- T Osada
- Department of Sports Medicine for Health Promotion, Tokyo Medical University, Japan.
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Bartels C, Spadaro A, Ueki S, Murase N, Du Q, Geller D. Interleukin-23 Mediates Hepatic I/R Injury Through IL-17 and CXCL1/2. J Surg Res 2012. [DOI: 10.1016/j.jss.2011.11.400] [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: 10/14/2022]
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Murase N, Rothwell J, Bhatia K. 9. Atypical stimulus-sensitive myoclonus presenting abnormal sensory-motor integration in a case of congenital hemiatorophy of cerebellum. Clin Neurophysiol 2012. [DOI: 10.1016/j.clinph.2011.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ghonem N, Yoshida J, Stolz DB, Humar A, Starzl TE, Murase N, Venkataramanan R. Treprostinil, a prostacyclin analog, ameliorates ischemia-reperfusion injury in rat orthotopic liver transplantation. Am J Transplant 2011; 11:2508-16. [PMID: 21668631 DOI: 10.1111/j.1600-6143.2011.03568.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Prostaglandins have been evaluated for their ability to reduce IRI after liver transplantation; however, poor stability, side effects and the inability to show a significant difference in primary endpoint have limited their clinical application. Treprostinil, a prostacyclin (PGI(2) ) analog, has a higher potency and longer elimination half-life than other commercially available PGI(2) analogs. We examined the efficacy of treprostinil to prevent IRI during OLT. OLT was performed in syngeneic Lewis rats after 18 h of cold preservation (4°C) in the UW solution. IRI significantly increased serum ALT and AST levels, neutrophil infiltration, hepatic necrosis and mRNA levels of proinflammatory cytokines post-OLT, while treatment with treprostinil decreased all the parameters. Cold storage of liver grafts significantly reduced ATP levels and treprostinil restored energy levels in liver grafts early postreperfusion. In addition, treprostinil preserved the sinusoidal endothelial cell lining and reduced platelet deposition early post-transplantation compared to placebo. Hepatic tissue blood flow was significantly compromised in the placebo group, whereas treprostinil maintained blood-flow similar to normal levels. Treprostinil protected the liver graft against IRI during OLT. Treprostinil has the potential to serve as a therapeutic option to protect the liver graft against I/R injury in patients undergoing OLT.
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Affiliation(s)
- N Ghonem
- Department of Pharmaceutical Sciences, University of Pittsburgh, Pittsburgh, PA, USA
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Murase N, Cengiz B, Rothwell JC. Long term potentiation-like effect by paired associative stimulation depends on the recruitment of late indirect-waves of corticospinal volleys in the human primary motor cortex. Neurosci Res 2011. [DOI: 10.1016/j.neures.2011.07.1106] [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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Cengiz B, Murase N, Rothwell J. P19.4 A dual and opposite effect of weak transcranial direct current stimulation on cerebral motor cortical excitability. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60505-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Murase N, Cengiz B, Rothwell J. P22.20 The relationship between short-interval intracortical inhibition and the long term potentiation-like effect of paired associative stimulation in human primary motor cortex. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60581-6] [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: 11/30/2022]
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Hamada M, Murase N, Hasan A, Balaratnam M, Rothwell J. P14.6 Intracortical paired associative stimulation in the human motor cortex. Clin Neurophysiol 2011. [DOI: 10.1016/s1388-2457(11)60434-3] [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: 10/17/2022]
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Bartels C, Cai C, Ueki S, Murase N, Du Q, Geller D. IL-23 Mediates Liver Ischemia-Reperfusion Injury via IFN-g/IRF-1 Pathway. J Surg Res 2011. [DOI: 10.1016/j.jss.2010.11.210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Murase N, Cengiz B, van den Boss M, Rothwell J. P36-10 A relationship between short-interval intracortical inhibition and the effectiveness of paired associative stimulation. Clin Neurophysiol 2010. [DOI: 10.1016/s1388-2457(10)61305-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Ueki S, Castellaneta A, Yoshida O, Ozaki KS, Zhang M, Kimura S, Thomson AW, Geller D, Murase N. AUGMENTATION OF HEPATIC ISCHEMIA/REPERFUSION (I/R) INJURY IN LIVER GRAFTS LACKING PD-L1 EXPRESSION. Transplantation 2010. [DOI: 10.1097/00007890-201007272-00177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Uguisu H, Urushihara R, Hosono Y, Asanuma K, Shimazu H, Murase N, Kaji R. Very low-frequency rTMS modulates SEPs over the contralateral hemisphere. J Med Invest 2010; 57:109-13. [DOI: 10.2152/jmi.57.109] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Affiliation(s)
- Haruo Uguisu
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Ryo Urushihara
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Yuki Hosono
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Kotaro Asanuma
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Hideki Shimazu
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Nagako Murase
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
| | - Ryuji Kaji
- Department of Neurology, Institute of Health Biosciences, the University of Tokushima Graduate School
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Homma T, Hamaoka T, Murase N, Osada T, Murakami M, Kurosawa Y, Kitahara A, Ichimura S, Yashiro K, Katsumura T. Low-volume muscle endurance training prevents decrease in muscle oxidative and endurance function during 21-day forearm immobilization. Acta Physiol (Oxf) 2009; 197:313-20. [PMID: 19438844 DOI: 10.1111/j.1748-1716.2009.02003.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
AIM To examine the effects of low-volume muscle endurance training on muscle oxidative capacity, endurance and strength of the forearm muscle during 21-day forearm immobilization (IMM-21d). METHODS The non-dominant arm (n = 15) was immobilized for 21 days with a cast and assigned to an immobilization-only group (Imm-group; n = 7) or an immobilization with training group (Imm+Tr-group; n = 8). Training comprised dynamic handgrip exercise at 30% of pre-intervention maximal voluntary contraction (MVC) at 1 Hz until exhaustion, twice a week during the immobilization period. The duration of each exercise session was 51.7 +/- 3.4 s (mean +/- SE). Muscle oxidative capacity was evaluated by the time constant for phosphocreatine recovery (tau(off)PCr) after a submaximal handgrip exercise using (31)phosphorus-magnetic resonance spectroscopy. An endurance test was performed at 30% of pre-intervention MVC, at 1 Hz, until exhaustion. RESULTS tau(off)PCr was significantly prolonged in the Imm-group after 21 days (42.0 +/- 2.8 and 64.2 +/- 5.1 s, pre- and post-intervention respectively; P < 0.01) but did not change for the Imm+Tr-group (50.3 +/- 3.0 and 48.8 +/- 5.0 s, ns). Endurance decreased significantly for the Imm-group (55.1 +/- 5.1 and 44.7 +/- 4.6 s, P < 0.05) but did not change for the Imm+Tr-group (47.9 +/- 3.0 and 51.7 +/- 4.0 s, ns). MVC decreased similarly in both groups (P < 0.01). CONCLUSIONS Twice-weekly muscle endurance training sessions, each lasting approx. 50 s, effectively prevented a decrease in muscle oxidative capacity and endurance; however, there was no effect on MVC decline with IMM-21d.
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Affiliation(s)
- T Homma
- Department of Sports Sciences, Japan Institute of Sports Sciences, Tokyo, Japan.
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van der Windt DJ, Bottino R, Casu A, Campanile N, Smetanka C, He J, Murase N, Hara H, Ball S, Loveland BE, Ayares D, Lakkis FG, Cooper DKC, Trucco M. Long-term controlled normoglycemia in diabetic non-human primates after transplantation with hCD46 transgenic porcine islets. Am J Transplant 2009; 9:2716-26. [PMID: 19845582 DOI: 10.1111/j.1600-6143.2009.02850.x] [Citation(s) in RCA: 191] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Xenotransplantation of porcine islets into diabetic non-human primates is characterized by (i) an initial massive graft loss possibly due to the instant blood-mediated inflammatory reaction and (ii) the requirement of intensive, clinically unfriendly immunosuppressive therapy. We investigated whether the transgenic expression of a human complement-regulatory protein (hCD46) on porcine islets would improve the outcome of islet xenotransplantation in streptozotocin-induced diabetic Cynomolgus monkeys. Immunosuppression consisted of thymoglobulin, anti-CD154 mAb for costimulation blockade, and mycophenolate mofetil. Following the transplantation of islets from wild-type pigs (n = 2) or from 1,3-galactosyltransferase gene-knockout pigs (n = 2), islets survived for a maximum of only 46 days, as evidenced by return to hyperglycemia and the need for exogenous insulin therapy. The transplantation of islets from hCD46 pigs resulted in graft survival and insulin-independent normoglycemia in four of five monkeys for the 3 months follow-up of the experiment. One normalized recipient, selected at random, was followed for >12 months. Inhibition of complement activation by the expression of hCD46 on the pig islets did not substantially reduce the initial loss of islet mass, rather was effective in limiting antibody-mediated rejection. This resulted in a reduced need for immunosuppression to preserve a sufficient islet mass to maintain normoglycemia long-term.
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Affiliation(s)
- D J van der Windt
- Division of Immunogenetics, Department of Pediatrics, Children's Hospital of Pittsburgh, of UPMC Pittsburgh, PA, USA
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Murase N, Urushihara R, Matsumoto M, Shimadu H, Asanuma K, Satou K, Kaji R. 136. Long-term effect of repetitive transcranial magnetic stimulation (rTMS) over the premotor cortex for upper limb dystonia. Clin Neurophysiol 2009. [DOI: 10.1016/j.clinph.2009.02.142] [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: 10/20/2022]
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