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Sako W, Goto S, Shimazu H, Murase N, Matsuzaki K, Tamura T, Mure H, Tomogane Y, Arita N, Yoshikawa H, Nagahiro S, Kaji R. Bilateral deep brain stimulation of the globus pallidus internus in tardive dystonia. Mov Disord 2009; 23:1929-31. [PMID: 18785227 DOI: 10.1002/mds.22100] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Tardive dystonia is a disabling movement disorder as a consequence of exposure to neuroleptic drugs. We followed 6 patients with medically refractory tardive dystonia treated by bilateral globus pallidus internus (GPi) deep brain stimulation (DBS) for 21 +/- 18 months. At last follow-up, the Burke-Fahn-Marsden Dystonia Rating Scale (BFMDRS) motor score improved by 86% +/- 14%, and the BFMDRS disability score improved by 80% +/- 12%. Bilateral GPi-DBS is a beneficial therapeutic option for the long-term relief of tardive dystonia.
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Hosono Y, Urushihara R, Harada M, Morita N, Murase N, Kunikane Y, Shimazu H, Asanuma K, Uguisu H, Kaji R. Comparison of monophasic versus biphasic stimulation in rTMS over premotor cortex: SEP and SPECT studies. Clin Neurophysiol 2008; 119:2538-45. [DOI: 10.1016/j.clinph.2008.07.279] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2007] [Revised: 06/02/2008] [Accepted: 07/30/2008] [Indexed: 10/21/2022]
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Shimazu H, Urishihara R, Murase N, Goto S, Kaji R. 1. Pre-movement gating of the somatosensory-evoked potentials recorded from the human thalamus. Clin Neurophysiol 2008. [DOI: 10.1016/j.clinph.2008.01.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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54
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Goto S, Shimazu H, Matsuzaki K, Tamura T, Murase N, Nagahiro S, Kaji R. Thalamic Vo-complex vs pallidal deep brain stimulation for focal hand dystonia. Neurology 2008; 70:1500-1. [PMID: 18413578 DOI: 10.1212/01.wnl.0000310430.00743.11] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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55
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Nakao A, Toyokawa H, Abe M, Kohmoto J, Tsung A, Kaizu T, Kanno S, Thomson A, Billiar T, McCurry K, Murase N. 362: Recipient Hyperbilirubinemia Protects Rat Cardiac Grafts. J Heart Lung Transplant 2008. [DOI: 10.1016/j.healun.2007.11.373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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56
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Kohmoto J, Nakao A, Stolz DB, Kaizu T, Tsung A, Ikeda A, Shimizu H, Takahashi T, Tomiyama K, Sugimoto R, Choi AMK, Billiar TR, Murase N, McCurry KR. Carbon monoxide protects rat lung transplants from ischemia-reperfusion injury via a mechanism involving p38 MAPK pathway. Am J Transplant 2007; 7:2279-90. [PMID: 17711551 DOI: 10.1111/j.1600-6143.2007.01940.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Carbon monoxide (CO) provides protection against oxidative stress via anti-inflammatory and cytoprotective actions. In this study, we tested the hypothesis that a low concentration of exogenous (inhaled) CO would protect transplanted lung grafts from cold ischemia-reperfusion injury via a mechanism involving the mitogen-activated protein kinase (MAPK) signaling pathway. Lewis rats underwent orthotopic syngeneic or allogeneic left lung transplantation with 6 h of cold static preservation. Exposure of donors and recipients (1 h before and then continuously post-transplant) to 250 ppm CO resulted in significant improvement in gas exchange, reduced leukocyte sequestration, preservation of parenchymal and endothelial cell ultrastructure and reduced inflammation compared to animals exposed to air. The beneficial effects of CO were associated with p38 MAPK phosphorylation and were significantly prevented by treatment with a p38 MAPK inhibitor, suggesting that CO's efficacy is at least partially mediated by activation of p38 MAPK. Furthermore, CO markedly suppressed inflammatory events in the contralateral naïve lung. This study demonstrates that perioperative exposure of donors and recipients to CO at a low concentration can impart potent anti-inflammatory and cytoprotective effects in a clinically relevant model of lung transplantation and support further evaluation for potential clinical use.
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Komori M, Tanaka M, Muramoto E, Ohno M, Matsumoto R, Murase N, Kitagawa N, Saida T. [Mitoxantrone for the treatment of Japanese patients with multiple sclerosis]. Rinsho Shinkeigaku 2007; 47:401-6. [PMID: 17710882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We retrospectively evaluated the benefits of mitoxantrone (MITX) treatment in Japanese patients with multiple sclerosis (MS) with more than 3 relapses per year or a deterioration of more than one Expanded Disability Status Scale (EDSS) of Kurtzke score per year despite having IFN beta 1b therapy. Monthly intravenous injections of MITX, 10-12 mg/m2, for 3 months were followed by an additional treatment every 3 months. Nine patients (6 women, 3 men) with a mean age of 39 years, a mean disease duration of 3.9 years, and a mean EDSS score of 6.7 were studied. Seven patients had long spinal cord lesions (LCL-MS). Most patients tolerated the treatment, although 2 patients stopped MITX therapy after 3 injections because of severe appetite loss. The 7 patients who continued MITX therapy for more than 3 times significantly decreased their relapse rate and EDSS deterioration. The average relapse count in the year preceding initiation of MITX therapy was 4.3 (range: 3-6)/year, EDSS score increased by 2.7 (range: 1-7)/year. The average relapse count was 2.3 (range: 0-4)/year from 0 to 6 months after MITX therapy (p = 0.114), and 1.1 (range: 0-4)/year from 7 to 12 months (p = 0.285). The average EDSS deterioration was -0.4 (range -2-1) from 0 to 6 months after MITX therapy (p = 0.018), and there was no deterioration from 7 to 12 months. Most patients received granulocyte colony stimulating factor because of leukocytopenia caused by MITX. No patients showed any decrease in cardiac ejection fraction during this observation period. For Japanese MS patients, MITX therapy was very effective to suppress relapses without incurring severe adverse events.
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Murase N. [Writer's cramp]. BRAIN AND NERVE = SHINKEI KENKYU NO SHINPO 2007; 59:569-79. [PMID: 17585588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Writer's cramp is classified as a focal dystonia. Abnormal sensory-motor integration is characteristic and loss of inhibition is seen in many levels, including cortex, spinal cord, and peripheral nerves. Altered, irregular firing pattern of the basal ganglia, as well as push-pull system of the motor loop, probably play an important role in the pathophysiology of dystonia. First therapeutic step is providing the information of pathophysiology to the patients and advicing them to reduce the amount of writing. According to severity, local lidocaine block or medication is used in Japan.
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Duque J, Murase N, Celnik P, Hummel F, Harris-Love M, Mazzocchio R, Olivier E, Cohen LG. Intermanual Differences in movement-related interhemispheric inhibition. J Cogn Neurosci 2007; 19:204-13. [PMID: 17280510 DOI: 10.1162/jocn.2007.19.2.204] [Citation(s) in RCA: 176] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Interhemispheric inhibition (IHI) between motor cortical areas is thought to play a critical role in motor control and could influence manual dexterity. The purpose of this study was to investigate IHI preceding movements of the dominant and nondominant hands of healthy volunteers. Movement-related IHI was studied by means of a double-pulse transcranial magnetic stimulation protocol in right-handed individuals in a simple reaction time paradigm. IHI targeting the motor cortex contralateral (IHI(c)) and ipsilateral (IHI(i)) to each moving finger was determined. IHI(c) was comparable after the go signal, a long time preceding movement onset, in both hands. Closer to movement onset, IHI(c) reversed into facilitation for the right dominant hand but remained inhibitory for left nondominant hand movements. IHI(i) displayed a nearly constant inhibition with a trough early in the premovement period in both hands. In conclusion, our results unveil a more important modulation of interhemispheric interactions during generation of dominant than nondominant hand movements. This modulation essentially consisted of a shift from a balanced IHI at rest to an IHI predominantly directed toward the ipsilateral primary motor cortex at movement onset. Such a mechanism might release muscles from inhibition in the contralateral primary motor cortex while preventing the occurrence of the mirror activity in ipsilateral primary motor cortex and could therefore contribute to intermanual differences in dexterity.
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Yamada K, Goto S, Kuratsu JI, Matsuzaki K, Tamura T, Nagahiro S, Murase N, Shimazu H, Kaji R. Stereotactic surgery for subthalamic nucleus stimulation under general anesthesia: A retrospective evaluation of Japanese patients with Parkinson's disease. Parkinsonism Relat Disord 2007; 13:101-7. [PMID: 17055325 DOI: 10.1016/j.parkreldis.2006.07.008] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2006] [Revised: 06/20/2006] [Accepted: 07/12/2006] [Indexed: 10/24/2022]
Abstract
We compared retrospectively the outcome of bilateral subthalamic nucleus (STN) stimulation in 15 patients with Parkinson's disease who underwent the procedure under general anesthesia (GA) with that achieved in 10 patients under local anesthesia (LA). At 3 months postoperatively, all cardinal parkinsonian motor symptoms, evaluated on Unified Parkinson's Disease Rating Scale were significantly improved compared to preoperative baselines in both groups. The administration of GA did not adversely affect postoperative improvements in motor and daily activity scores, except for off-medication bradykinesia. Our results suggest that GA compares favorably with LA in surgical procedure for bilateral STN stimulation.
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Hitomi T, Kaji R, Murase N, Kohara N, Mezaki T, Nodera H, Kawamura T, Ikeda A, Shibasaki H. Dynamic change of proximal conduction in demyelinating neuropathies: a cervical magnetic stimulation combined with maximum voluntary contraction. Clin Neurophysiol 2007; 118:741-50. [PMID: 17317300 DOI: 10.1016/j.clinph.2006.11.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Revised: 10/21/2006] [Accepted: 11/18/2006] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To evaluate conduction abnormalities in the nerves innervating the proximal muscles in demyelinating neuropathies (DN) using cervical magnetic stimulation. METHODS We applied cervical root magnetic stimulation in the biceps brachii muscles and examined its activity-dependent conduction changes produced by maximal voluntary contraction (MVC) in 12 DN patients (seven chronic inflammatory demyelinating polyradiculoneuropathy and five multifocal motor neuropathy), six motor neuron disease (MND) patients, and 12 healthy volunteers. RESULTS Defining the upper normal limit of motor threshold (31%) and latency (6.7 ms) of the compound muscle action potential (CMAP) as mean+2SD, most DN patients revealed an abnormality in motor threshold (10/12) and latency (11/12) in contrast to MND patients (motor threshold (1/6) and latency (0/6)). These parameters contribute to the differentiation of DN from MND (P<0.01). Furthermore, the MVC maneuver transiently decreased the CMAP amplitude ratio (after MVC/before MVC x 100) in DN (83+/-18 %) compared with MND (P<0.01). Two of three DN patients who showed normal motor threshold or latency as in MND were successfully differentiated from MND by the MVC maneuver. CONCLUSIONS In DN patients, conduction abnormality in the nerves innervating the proximal muscles was revealed by cervical magnetic stimulation combined with the MVC maneuver. SIGNIFICANCE Our results suggested that conduction abnormalities in the proximal nerves innervating the proximal muscles could be evaluated by this method.
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Li C, Nishikawa K, Ando M, Enomoto H, Murase N. Highly luminescent water-soluble ZnSe nanocrystals and their incorporation in a glass matrix. Colloids Surf A Physicochem Eng Asp 2007. [DOI: 10.1016/j.colsurfa.2006.07.052] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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63
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Ikeda A, Nakao A, Tomiyama K, Faleo G, Kohmoto J, Ross M, Stolz D, Geller D, Murase N. 1. J Surg Res 2007. [DOI: 10.1016/j.jss.2006.12.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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64
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Sawada H, Oeda T, Yamamoto K, Murase N, Mizuta E, Yamakawa K, Takeuchi H, Kitagawa N, Shimohama S, Takahashi R, Kawamura T. 3.128 Cardiac metaiodobenzylguanidine scintigraphy as a peripheral biomarker for the diagnosis of Parkinson's disease. Parkinsonism Relat Disord 2007. [DOI: 10.1016/s1353-8020(08)70835-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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65
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Sawada H, Oeda T, Yamamoto K, Yamakawa K, Mizuta E, Murase N. 1.178 Risk factors for psychosis in Parkinson disease. Parkinsonism Relat Disord 2007. [DOI: 10.1016/s1353-8020(08)70450-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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66
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Kaji R, Tamiya G, Makino S, Shimazu H, Murase N, Sakamoto T, Tooyama I, Urushihara R. [Dystonia update]. Rinsho Shinkeigaku 2006; 46:962. [PMID: 17432233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
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67
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Nakao A, Toyokawa H, Tsung A, Nalesnik MA, Stolz DB, Kohmoto J, Ikeda A, Tomiyama K, Harada T, Takahashi T, Yang R, Fink MP, Morita K, Choi AMK, Murase N. Ex vivo application of carbon monoxide in University of Wisconsin solution to prevent intestinal cold ischemia/reperfusion injury. Am J Transplant 2006; 6:2243-55. [PMID: 16827783 DOI: 10.1111/j.1600-6143.2006.01465.x] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Carbon monoxide (CO), a byproduct of heme catalysis, was shown to have potent cytoprotective and anti-inflammatory effects. In vivo recipient CO inhalation at low concentrations prevented ischemia/reperfusion (I/R) injury associated with small intestinal transplantation (SITx). This study examined whether ex vivo delivery of CO in University of Wisconsin (UW) solution could ameliorate intestinal I/R injury. Orthotopic syngenic SITx was performed in Lewis rats after 6 h cold preservation in control UW or UW that was bubbled with CO gas (0.1-5%) (CO-UW). Recipient survival with intestinal grafts preserved in 5%, but not 0.1%, CO-UW improved to 86.7% (13/15) from 53% (9/17) with control UW. At 3 h after SITx, grafts stored in 5% CO-UW showed improved intestinal barrier function, less mucosal denudation and reduced inflammatory mediator upregulation compared to those in control UW. Preservation in CO-UW associated with reduced vascular resistance (end preservation), increased graft cyclic guanosine monophosphate levels (1 h), and improved graft blood flow (1 h). Protective effects of CO-UW were reversed by ODQ, an inhibitor of soluble guanylyl cyclase. In vitro culture experiment also showed better preservation of vascular endothelial cells with CO-UW. The study suggests that ex vivo CO delivery into UW solution would be a simple and innovative therapeutic strategy to prevent transplant-induced I/R injury.
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Goto S, Yamada K, Shimazu H, Murase N, Matsuzaki K, Tamura T, Nagahiro S, Kuratsu JI, Kaji R. Impact of bilateral pallidal stimulation on DYT1-generalized dystonia in Japanese patients. Mov Disord 2006; 21:1785-7. [PMID: 16830314 DOI: 10.1002/mds.21021] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Early-onset generalized dystonia attributable to a DYT1 gene mutation is a hyperkinetic movement disorder that responds poorly to pharmacotherapy. In this video brief, we show that continuous bilateral stimulation of the globus pallidus internus produced sustained and marked improvements in the motor symptoms and functional disabilities of Japanese patients with DYT1-generalized dystonia.
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69
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Yamada K, Goto S, Soyama N, Shimoda O, Kudo M, Kuratsu JI, Murase N, Kaji R. Complete suppression of paroxysmal nonkinesigenic dyskinesia by globus pallidus internus pallidal stimulation. Mov Disord 2006; 21:576-9. [PMID: 16267844 DOI: 10.1002/mds.20762] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Stereotactic functional surgery is being explored as potential therapies for medically intractable paroxysmal dyskinesias (PxD). We report on a 59-year-old man in whom stimulation of globus pallidus internus produced immediate and sustained relief of paroxysmal non-kinesigenic dyskinesia secondary to a rotator cuff tears on the left shoulder. Our finding strongly suggests that altered function of neuronal circuits of the basal ganglia underlies the manifestation of PxD.
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70
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Urushihara R, Murase N, Harada M, Hosono Y, Shimazu H, Kaji R. FC22.3 Mechanism of therapeutic effects of low-frequency monophasic rTMS over premotor cortex in writer’s cramp. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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71
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Murase N, Shimazu H, Urushihara R, Matsuzaki K, Nagahiro S, Yamada K, Goto S, Mima T, Nagamine T, Kaji R. FC37.2 Movement-related field potentials of dystonia recorded in the human pallidum. Clin Neurophysiol 2006. [DOI: 10.1016/j.clinph.2006.06.123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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72
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Nodera H, Bostock H, Izumi Y, Nakamura K, Urushihara R, Sakamoto T, Murase N, Shimazu H, Kusunoki S, Kaji R. Activity-dependent conduction block in multifocal motor neuropathy: Magnetic fatigue test. Neurology 2006; 67:280-7. [PMID: 16864821 DOI: 10.1212/01.wnl.0000225048.20239.e4] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND Multifocal motor neuropathy (MMN) is often misdiagnosed as motor neuron disease, especially when overt evidence of conduction block (CB) is lacking. Activity-dependent CB (ADCB), defined as transient CB induced by brief exercise, has been recently found in MMN but not in ALS. METHODS To test the diagnostic utility of ADCB for differentiating MMN from ALS, the authors recorded the compound muscle action potentials (CMAPs) from small hand muscles by magnetically stimulating nerve roots before and after 1 minute of maximal voluntary contraction (magnetic fatigue test). They examined nine patients with MMN with unequivocal clinical responses to IV immunoglobulins (IVIgs), yet lacked CB according to the conventional criteria. RESULTS Six MMN patients had postexercise CB/temporal dispersion maximum in the immediate postexercise period. ADCB in an MMN patient improved after IVIg. Further analysis revealed that prolongation of the duration from the onset to the positive peak of the CMAP was the most sensitive indicator for MMN, presumably because the phase cancellation obscures the abnormalities of the other parameters. CONCLUSION The magnetic fatigue test is useful in detecting mild conduction block presumably located in a proximal nerve segment in patients with multifocal motor neuropathy who do not fulfill its conventional electrodiagnostic criteria.
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Urushihara R, Murase N, Rothwell JC, Harada M, Hosono Y, Asanuma K, Shimazu H, Nakamura K, Chikahisa S, Kitaoka K, Sei H, Morita Y, Kaji R. Effect of repetitive transcranial magnetic stimulation applied over the premotor cortex on somatosensory-evoked potentials and regional cerebral blood flow. Neuroimage 2006; 31:699-709. [PMID: 16466934 DOI: 10.1016/j.neuroimage.2005.12.027] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2005] [Revised: 11/25/2005] [Accepted: 12/15/2005] [Indexed: 11/30/2022] Open
Abstract
Somatosensory-evoked potentials (SEPs) are attenuated by movement. This phenomenon of 'gating' reflects sensorimotor integration for motor control. The frontal N30 component after median nerve stimulation was shown to be reduced in amplitude prior to hand movement. To investigate the mechanism of this sensory gating, we recorded median SEPs immediately before and after application of monophasic very low-frequency (0.2 Hz) repetitive transcranial magnetic stimulation (rTMS) of 250 stimuli over motor cortex (MC), premotor cortex (PMC), or supplementary motor area (SMA) in 9 healthy volunteers. The stimulus intensity for MC or PMC was set 85% of the resting motor threshold for the hand muscle, and that for SMA was at the active motor threshold for the leg muscle. SEPs showed significant increases in amplitudes of the frontal N30 component after PMC stimulation, but not after SMA or MC stimulation. Low-frequency (1 Hz) biphasic stimulation over PMC showed no significant N30 changes in 6 out of 9 subjects tested, indicating the effect being specific for 0.2 Hz monophasic stimulation. To examine the functional anatomy of the N30 change, single photon emission computed tomography was performed immediately before and after monophasic 0.2 Hz rTMS over PMC in all the 9 subjects. Regional cerebral blood flow showed significant increases mainly in PMC and prefrontal cortex, indicating the involvement of these cortical areas in sensory input gating for motor control.
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Yamada K, Goto S, Matsuzaki K, Tamura T, Murase N, Shimazu H, Nagahiro S, Kuratsu JI, Kaji R. Alleviation of camptocormia by bilateral subthalamic nucleus stimulation in a patient with Parkinson's disease. Parkinsonism Relat Disord 2006; 12:372-5. [PMID: 16731023 DOI: 10.1016/j.parkreldis.2006.02.003] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2005] [Revised: 02/08/2006] [Accepted: 02/08/2006] [Indexed: 11/25/2022]
Abstract
Camptocormia, known also as "bent spine syndrome", is characterized by involuntary truncal flexion of the thoraco-lumbar spine that appears in the sitting or standing position. Although Parkinson's disease (PD) is the most frequent etiologic factor, this postural disorder responds poorly to levodopa or other medications. We report a PD patient in whom chronic bilateral subthalamic nucleus stimulation produced a striking alleviation of camptocormia.
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75
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Yamada K, Goto S, Matsuzaki K, Nagahiro S, Murase N, Shimazu H, Kaji R, Kuratsu JI, Ushio Y. Psychiatric Symptoms and Subthalamic Nucleus Stimulation in Parkinson's Disease. A Retrospective Study in Our Japanese Patients. Neuromodulation 2006; 9:107-14. [DOI: 10.1111/j.1525-1403.2006.00054.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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76
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Yan C, Tanaka M, Sugie K, Nobutoki T, Woo M, Murase N, Higuchi Y, Noguchi S, Nonaka I, Hayashi YK, Nishino I. A new congenital form of X-linked autophagic vacuolar myopathy. Neurology 2006; 65:1132-4. [PMID: 16217076 DOI: 10.1212/01.wnl.0000178979.19887.f5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
In a new family with X-linked congenital autophagic vacuolar myopathy (AVM), seven affected boys presented with congenital hypotonia, dyspnea, and dysphagia with delayed motor milestones. Muscle pathology revealed autophagic vacuoles with sarcolemmal features, multilayered basal lamina with marked sarcolemmal deposition of C5-9 membrane attack complex and calcium, histologically indistinguishable from childhood-onset X-linked myopathy with excessive autophagy (XMEA). Haplotype analysis suggests that this new AVM and XMEA may be allelic despite different clinical presentations.
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77
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Ikeda A, Kaizu T, Nakao A, Shao L, Bucher B, Murase N, Geller D. Donor graft adenoviral iNOS gene transfer improve transplant survival and ischemia / reperfusion injury. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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78
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Bucher B, Jeyabalan G, Kaizu T, Feng X, Murase N, Geller D. Nitric oxide (NO) decreases liver damage and caspase-3 activity during cholestatic liver injury. J Surg Res 2006. [DOI: 10.1016/j.jss.2005.11.188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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79
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Murase N, Shimadu H, Urushihara R, Kaji R. Chapter 37 Abnormal sensorimotor integration in hand dystonia. ACTA ACUST UNITED AC 2006; 59:283-7. [PMID: 16893122 DOI: 10.1016/s1567-424x(09)70041-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
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80
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Murase N. [Pathophysiology of dystonia]. NO TO SHINKEI = BRAIN AND NERVE 2005; 57:957-72. [PMID: 16363635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
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81
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Kaji R, Urushihara R, Murase N, Shimazu H, Goto S. Abnormal sensory gating in basal ganglia disorders. J Neurol 2005; 252 Suppl 4:IV13-IV16. [PMID: 16222432 DOI: 10.1007/s00415-005-4004-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Basal ganglia encompass four to five distinct loops to allow parallel processing of information. Among them, the most intensively studied is the motor loop, which includes two distinct direct and indirect pathways. The direct pathway exerts facilitatory influence upon the motor cortex, whereas the indirect pathway exerts an inhibitory effect. Overall, this dual system provides a center(excitatory)-surround-(inhibitory) mechanism to focus its effect on selected cortical neurons, and several lines of evidence suggest that this center-surround mechanism is used to focus the output on a specific group of muscles required for performing a specific task. This operation is made possible through opening the sensory channel for the expected sensory feed-back afferents during movement. Thus, one of the important functions of basal ganglia seems to be the gating of sensory input for motor control. Dystonia may be caused by a mismatch between sensory input versus motor output, and parkinsonism may be viewed as a disorder of gain control of this sensorimotor integration.
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Yang P, Li CL, Murase N. Highly photoluminescent multilayer QD-glass films prepared by LbL self-assembly. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2005; 21:8913-7. [PMID: 16142978 DOI: 10.1021/la050397q] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
A novel and facile preparation method for layer-by-layer (LbL) self-assembled films incorporating quantum dots (QDs) and having intense photoluminescence (PL) from blue to red is presented. Functional sol-gel-derived glass layers prepared by the hydrolysis of 3-aminopropyltrimethoxysilane (APS) or 3-mercaptopropyltrimethoxysilane (MPS) have been used as a linkage between QD layers. Absorption, PL spectroscopy, transmission electron microscopy, and atomic force microscopy were employed for characterization, which revealed that the QDs in the prepared films had a nearly close-packed coverage and were not aggregated. The PL efficiencies of the QDs (CdTe or ZnSe, both are thioglycolic acid-stabilized) dispersed in the films were roughly half that of the initial colloidal solutions but reached 24% before a refractive index correction. The thickness of the red-emitting film with 10 CdTe QD layers was approximately 50 nm. The concentration of QDs in the film derived from the first absorption peak was approximately 0.01 M. Because the PL starts to show a red shift, the obtained concentration is practically the ultimate one in the glass matrix. The mercapto, amino, and carboxyl groups play important roles in LbL self-assembling processes.
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Murase N, Yang P, Li CL. Quantitative Analysis of the Photodegradation of Emitting CdTe Nanocrystals Dispersed in Glass Films. J Phys Chem B 2005; 109:17855-60. [PMID: 16853290 DOI: 10.1021/jp052524x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
CdTe nanocrystals (NCs, green- and red-emitting) prepared by an aqueous method were embedded into transparent glass films (15-20 microm thick) using a sol-gel method. Photodegradation of the NCs in the films due to UV irradiation (365 nm) was investigated quantitatively by measuring the PL efficiency as a function of the irradiation time for various irradiation intensities at several temperatures. Since CdTe NCs prepared by an aqueous method incorporate sulfur atoms from the surfactant (thioglycolic acid) during prolonged reflux in an alkaline region, the surface of red-emitting NCs (3.9 nm phi) is much more sulfur rich than that of green-emitting ones (2.6 nm phi), as previously reported. Due to this composition difference, the degradation behaviors of the two types of NCs differ significantly. The photodegradation of green-emitting glass films depended linearly on the irradiation intensity, whereas that of red-emitting ones showed a quadratic dependence. The activation energies of the photodegradation for both types of films were similar, 304 +/- 9 and 288 +/- 7 meV/particle, respectively. The NCs in the film were more than 2 orders of magnitude more robust than those in colloidal solutions. Comparison of the degradation of the glass films in air and in an Ar atmosphere revealed that the main mechanism of the photodegradation of the green-emitting NCs was oxidization from the first electronically excited state. The mechanism of the red-emitting NCs was not oxidization but a surface change probably related to a surfactant reaction.
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Duque J, Hummel F, Celnik P, Murase N, Mazzocchio R, Cohen LG. Transcallosal inhibition in chronic subcortical stroke. Neuroimage 2005; 28:940-6. [PMID: 16084737 DOI: 10.1016/j.neuroimage.2005.06.033] [Citation(s) in RCA: 230] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2005] [Revised: 06/24/2005] [Accepted: 06/28/2005] [Indexed: 10/25/2022] Open
Abstract
Movements of the paretic hand in patients with chronic subcortical stroke are associated with high interhemispheric inhibition (IHI) targeting the motor cortex in the lesioned hemisphere relative to healthy controls. The purpose of this investigation was to determine whether this abnormality also involves IHI operating during movements of the non-paretic hand. Here, we studied IHI in the process of generation of voluntary index finger movements by the paretic and non-paretic hands in a simple reaction time paradigm in a group of patients with chronic subcortical stroke. With movements of the non-paretic index finger, IHI targeting the contralateral primary motor cortex ((c)M1) decreased progressively to turn into facilitation at around movement onset, similar to healthy controls. In contrast, movements of the paretic index finger resulted in significantly deeper inhibition at all premovement timings relative to the non-paretic hand. In conclusion, these results document a deeper premovement IHI with paretic than non-paretic hand movements of patients with chronic subcortical stroke, a possible mechanism underlying deficits in motor control.
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Murase N, Rothwell JC, Kaji R, Urushihara R, Nakamura K, Murayama N, Igasaki T, Sakata-Igasaki M, Mima T, Ikeda A, Shibasaki H. Subthreshold low-frequency repetitive transcranial magnetic stimulation over the premotor cortex modulates writer's cramp. ACTA ACUST UNITED AC 2004; 128:104-15. [PMID: 15483042 DOI: 10.1093/brain/awh315] [Citation(s) in RCA: 184] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Writer's cramp, or focal hand dystonia, is characterized by involuntary coactivation of antagonist or unnecessary muscles while writing or performing other tasks. Although the mechanism underlying this muscle overactivation is unknown, recent studies of changes in cerebral blood flow during writing have demonstrated a reduction in the activation of the primary motor cortex (MC) and hyperactivity of parts of the frontal non-primary motor areas. Therefore, any measures that decrease the activities of non-primary motor areas such as the premotor cortex (PMC) and the supplementary motor area (SMA) might improve dystonic symptoms. To explore this possibility, we studied nine patients with writer's cramp and seven age-matched control subjects, using subthreshold low-frequency (0.2 Hz) repetitive transcranial magnetic stimulation (rTMS), which exerts an inhibitory action on the cortex. Previous studies have demonstrated shortened cortical silent periods in dystonia, suggesting deficient cortical inhibition in the MC. We compared the silent periods and computer-assisted ratings of handwriting before and after rTMS applied to the MC, SMA or PMC. We also used the sham coil for control runs. Stimulation of the PMC but not the MC significantly improved the rating of handwriting (mean tracking error from the target, P = 0.004; pen pressure, P = 0.01) and prolonged the silent period (P = 0.02) in the patient group. rTMS over the other sites or using a sham coil in the patient group or trials in the control group revealed no physiological or clinical changes. This increased susceptibility of the PMC in dystonia suggests that the lack of inhibition in the MC is secondary to the hyperactivity of PMC neurons. Inhibition of the PMC using rTMS could provide a therapeutic measure of writer's cramp.
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Haque TL, Miki Y, Kashii S, Yamamoto A, Kanagaki M, Takahashi T, Fushimi Y, Asato R, Murase N, Shibasaki H, Konishi J. Dynamic MR imaging in Tolosa–Hunt syndrome. Eur J Radiol 2004; 51:209-17. [PMID: 15294327 DOI: 10.1016/j.ejrad.2003.09.016] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2003] [Revised: 09/24/2003] [Accepted: 09/26/2003] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To evaluate the cavernous sinuses with dynamic magnetic resonance (MR) imaging in patients with Tolosa-Hunt syndrome (THS). METHODS The sellar and parasellar regions of five patients with THS and 12 control subjects were examined with dynamic MR (1.5 T) imaging in the coronal plane. Dynamic images were obtained with spin-echo (SE) sequences in three patients, and with fast spin-echo (FSE) sequences in two patients and control subjects. Conventional MR images of the cranium including sellar and parasellar regions were also obtained on T1-weighted pre- and post-contrast SE, and T2-weighted FSE sequences in the coronal plane. RESULTS MR images revealed affected cavernous sinus with bulged convex lateral wall in three patients and concave lateral wall in two patients. In all control subjects, cavernous sinuses were observed with concave lateral wall. The signal intensity on T1- and T2-weighted images and contrast enhancement on post-contrast images of the affected cavernous sinuses in patients were similar to those of the unaffected cavernous sinuses in patients and control subjects. The dynamic images in all patients disclosed small areas adjacent to the cranial nerve filling-defects within the enhanced venous spaces of the affected cavernous sinus, which showed slow and gradual enhancement from the early to the late dynamic images. No such gradually enhancing area was observed in control subjects except one. The follow-up dynamic MR images after corticosteroid therapy revealed complete resolution of the gradually enhancing areas in the previously affected cavernous sinus. CONCLUSION Dynamic MR imaging may facilitate the diagnosis of THS.
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Duque J, Mazzocchio R, Dambrosia J, Murase N, Olivier E, Cohen LG. Kinematically Specific Interhemispheric Inhibition Operating in the Process of Generation of a Voluntary Movement. Cereb Cortex 2004; 15:588-93. [PMID: 15342437 DOI: 10.1093/cercor/bhh160] [Citation(s) in RCA: 144] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Unilateral hand movements are accompanied by a transient decrease in corticospinal (CS) excitability of muscles in the opposite hand. However, the rules that govern this phenomenon are not completely understood. We measured the amplitude of motor evoked potentials (MEP) in the left first dorsal interosseus (FDI) elicited by transcranial magnetic stimulation (TMS) of the primary motor cortex in order to assess CS excitability changes that preceded eight possible combinations of unilateral and bilateral index finger movements with different right hand positions. Left FDI MEP amplitude (MEP(Left FDI)) increased when this muscle acted as an agonist and tended to decrease when it was an antagonist. Additionally, MEP(Left FDI) decreased substantially before right index finger abduction (a movement mediated by the right FDI) when both hands were lying flat (a movement mirroring left index finger abduction) but not when the right hand was turned at 90 degrees or flat with the palm up. Therefore, CS excitability of the resting FDI was differentially modulated depending on the direction of the opposite index finger movement, regardless of muscles engaged in the task. These results indicate that inhibitory interactions preceding unilateral finger movements are determined by movement kinematics possibly to counteract the default production of mirror motions.
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Abu-Elmagd K, Bond G, Mazariegos G, Murase N, Martin D, Koritsky D, Sindhi R, Laughlin K, Wu T, Demetris A, Marcos A, Fung J, Starzl TE, Reyes J. A NEW TOLERGENIC IMMUNOSUPPRESSIVE STRATEGY FOR HUMAN INTESTINAL TRANSPLANTATION. Transplantation 2004. [DOI: 10.1097/00007890-200407271-00071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Demetris AJ, Eghtesad B, Marcos A, Ruppert K, Nalesnik MA, Randhawa P, Wu T, Krasinskas A, Fontes P, Cacciarelli T, Shakil AO, Murase N, Fung JJ, Starzl TE. Recurrent Hepatitis C in Liver Allografts. Am J Surg Pathol 2004; 28:658-69. [PMID: 15105656 PMCID: PMC2974275 DOI: 10.1097/00000478-200405000-00015] [Citation(s) in RCA: 83] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
RATIONALE AND DESIGN The accuracy of a prospective histopathologic diagnosis of rejection and recurrent hepatitis C (HCV) was determined in 48 HCV RNA-positive liver allograft recipients enrolled in an "immunosuppression minimization protocol" between July 29, 2001 and January 24, 2003. Prospective entry of all pertinent treatment, laboratory, and histopathology results into an electronic database enabled a retrospective analysis of the accuracy of histopathologic diagnoses and the pathophysiologic relationship between recurrent HCV and rejection. RESULTS Time to first onset of acute rejection (AR) (mean, 107 days; median, 83 days; range, 7-329 days) overlapped with the time to first onset of recurrent HCV (mean, 115 days; median, 123 days; range, 22-315 days), making distinction between the two difficult. AR and chronic rejection (CR) with and without co-existent HCV showed overlapping but significantly different liver injury test profiles. One major and two minor errors occurred (positive predictive values for AR = 91%; recurrent HCV = 100%); all involved an overdiagnosis of AR in the context of recurrent HCV. Retrospective analysis of the mistakes showed that major errors can be avoided altogether and the impact of unavoidable minor errors can be minimized by strict adherence to specific histopathologic criteria, close clinicopathologic correlation including examination of HCV RNA levels, and a conservative approach to the use of additional immunosuppression. In addition, histopathologic diagnoses of moderate and severe AR and CR were associated with relatively low HCV RNA levels, whereas relatively high HCV RNA levels were associated with a histopathologic diagnosis of hepatitis alone, particularly the cholestatic variant of HCV. CONCLUSIONS Liver allograft biopsy interpretation can rapidly and accurately distinguish between recurrent HCV and AR/CR. In addition, the histopathologic observations suggest that the immune mechanism responsible for HCV clearance overlap with those leading to significant rejection.
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Murase N, Duque J, Mazzocchio R, Cohen LG. Influence of interhemispheric interactions on motor function in chronic stroke. Ann Neurol 2004; 55:400-9. [PMID: 14991818 DOI: 10.1002/ana.10848] [Citation(s) in RCA: 964] [Impact Index Per Article: 48.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In patients with chronic stroke, the primary motor cortex of the intact hemisphere (M1(intact hemisphere)) may influence functional recovery, possibly through transcallosal effects exerted over M1 in the lesioned hemisphere (M1(lesioned hemisphere)). Here, we studied interhemispheric inhibition (IHI) between M1(intact hemisphere) and M1(lesioned hemisphere) in the process of generation of a voluntary movement by the paretic hand in patients with chronic subcortical stroke and in healthy volunteers. IHI was evaluated in both hands preceding the onset of unilateral voluntary index finger movements (paretic hand in patients, right hand in controls) in a simple reaction time paradigm. IHI at rest and shortly after the Go signal were comparable in patients and controls. Closer to movement onset, IHI targeting the moving index finger turned into facilitation in controls but remained deep in patients, a finding that correlated with poor motor performance. These results document an abnormally high interhemispheric inhibitory drive from M1(intact hemisphere) to M1(lesioned hemisphere) in the process of generation of a voluntary movement by the paretic hand. It is conceivable that this abnormality could adversely influence motor recovery in some patients with subcortical stroke, an interpretation consistent with models of interhemispheric competition in motor and sensory systems.
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Kaji R, Murase N, Urushihara R, Asanuma K. Sensory deficits in dystonia and their significance. ADVANCES IN NEUROLOGY 2004; 94:11-7. [PMID: 14509649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
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Kaizu T, Nakao A, Bucher B, Otterbein L, Geller D, Murase N. Protective effect of donor pretreatment with carbon monoxide on ischemia/reperfusion injury after rat liver transplantation; possible role of Hsp 70 expression. J Surg Res 2003. [DOI: 10.1016/j.jss.2003.08.233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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93
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Seda Neto J, Nakao A, KimizuKa K, Kaizu T, Otterbein L, Nalesnik M, Stolz D, Romanosky A, Geller D, Murase N. Carbon monoxide inhalation protects rat kidney grafts from ischemia/reperfusion injury. J Surg Res 2003. [DOI: 10.1016/j.jss.2003.08.228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Nakao A, Moore BA, Murase N, Liu F, Zuckerbraun BS, Bach FH, Choi AMK, Nalesnik MA, Otterbein LE, Bauer AJ. Immunomodulatory effects of inhaled carbon monoxide on rat syngeneic small bowel graft motility. Gut 2003; 52:1278-85. [PMID: 12912858 PMCID: PMC1773787 DOI: 10.1136/gut.52.9.1278] [Citation(s) in RCA: 89] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND Intestinal transplantation provokes an intense inflammatory response within the graft muscularis that causes intestinal ileus. We hypothesised that endogenously produced anti-inflammatory substances could be utilised as novel therapeutics. Therefore, we tested the protective effects of inhaled carbon monoxide (CO) and an endogenous haeme oxygenase 1 (HO-1) anti-inflammatory mediator on transplant induced inflammatory responses and intestinal ileus in the rat. METHODS Gastrointestinal transit of non-absorbable FITC labelled dextran and in vitro jejunal circular muscle contractions were measured in controls and syngeneic orthotopic transplanted animals with and without CO inhalation (250 ppm for 25 hours). Inflammatory mRNAs for interleukin (IL)-6, IL-1beta, tumour necrosis factor alpha (TNF-alpha), intercellular adhesion molecule 1 (ICAM-1), inducible nitric oxide (iNOS), cyclooxygenase 2 (COX-2), and IL-10 were quantified by real time reverse transcriptase-polymerase chain reaction and HO-1 by northern blot. Histochemical stains characterised neutrophil infiltration and enterocyte apoptosis. RESULTS Transplantation delayed transit and suppressed jejunal circular muscle contractility. Transplantation induced dysmotility was significantly improved by CO inhalation. Transplantation initiated a significant upregulation in IL-6, IL-1beta, TNF-alpha, ICAM-1, iNOS, COX-2, and HO-1 mRNAs with the graft muscularis. CO inhalation significantly decreased expression of IL-6, IL-1beta, iNOS, and COX-2 mRNAs. CO also significantly decreased serum nitrite levels (iNOS activity). CONCLUSIONS CO inhalation significantly improved post-transplant motility and attenuated the inflammatory cytokine milieu in the syngeneic rat transplant model. Thus clinically providing CO, the end product of the anti-inflammatory HO-1 pathway, may prove to be an effective therapeutic adjunct for clinical small bowel transplantation.
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Li CL, Ando M, Murase N. Fabrication of highly luminescent glass incorporating CdTe nanocrystals by using silane coupling agents. ACTA ACUST UNITED AC 2003. [DOI: 10.1002/pssc.200303061] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Yoshida K, Kaji R, Kohara N, Murase N, Ikeda A, Shibasaki H, Iizuka T. Movement-related cortical potentials before jaw excursions in oromandibular dystonia. Mov Disord 2003; 18:94-100. [PMID: 12518306 DOI: 10.1002/mds.10296] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Oromandibular dystonia is a neurological disorder characterized by involuntary contraction of masticatory and/or tongue muscles. Cortical negative shifts preceding voluntary movements called "movement-related cortical potentials" (MRCPs) reflect a central motor control process. Reduced amplitude of MRCPs has been reported in other types of dystonia. To elucidate whether the abnormality is observed also in oromandibular dystonia, we compared MRCPs associated with mandibular movements in 6 patients with this condition and in 8 normal subjects. Electroencephalograms (EEGs) were recorded from 11 electrodes, and electromyograms (EMGs) were recorded from the masseter muscle and the suprahyoid muscles. The subjects were asked to repeat mouth opening, closing, and left and right lateral mandibular excursions. MRCPs were obtained by averaging the EEG using the EMG onset as the trigger signal. In the patient group, MRCP amplitudes over central and parietal areas for mouth opening and lateral movements were significantly reduced compared to normal subjects. In normal controls, the MRCPs at mouth opening and closing were symmetrically distributed, whereas those at lateral movements showed predominance over the hemisphere ipsilateral to the direction of the movement. This laterality was lost in the patient group. These results suggest impaired cortical preparatory process for jaw movements in oromandibular dystonia.
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Iwanami K, Ishikawa T, Okuda T, Zhu Y, Tuerler A, Moore BA, Zhang S, Bauer AJ, Venkataramanan R, Abu-Elmagd K, Starzl TE, Nalesnik MA, Murase N. Long-term function and morphology of intestinal allografts in outbred canine transplantation model. Transplant Proc 2002; 34:994-5. [PMID: 12034277 PMCID: PMC2967194 DOI: 10.1016/s0041-1345(02)02735-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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98
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Ishikawa T, Iwanami K, Okuda T, Zhu Y, Fukuda A, Zhang S, Ou J, Nalesnik MA, Venkataramanan R, Murase N. Intestinal function and morphology after ex vivo irradiated small bowel transplantation. Transplant Proc 2002; 34:988-9. [PMID: 12034274 DOI: 10.1016/s0041-1345(02)02732-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
MESH Headings
- ATP Binding Cassette Transporter, Subfamily B, Member 1/genetics
- ATP Binding Cassette Transporter, Subfamily B, Member 1/metabolism
- Animals
- Bone Marrow Transplantation/physiology
- Cyclosporine/pharmacology
- Cytochrome P-450 CYP3A
- Cytochrome P-450 Enzyme System/genetics
- Cytochrome P-450 Enzyme System/metabolism
- Diarrhea/epidemiology
- Dogs
- Immunosuppression Therapy/methods
- Immunosuppressive Agents/pharmacology
- Intestine, Small/pathology
- Intestine, Small/physiology
- Intestine, Small/radiation effects
- Intestine, Small/transplantation
- Mixed Function Oxygenases/genetics
- Mixed Function Oxygenases/metabolism
- Models, Animal
- Postoperative Complications/epidemiology
- Tacrolimus/pharmacology
- Time Factors
- Transplantation, Autologous/immunology
- Transplantation, Autologous/physiology
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Wu T, Abu-Elmagd K, Bond G, Murase N, Demetris AJ. A clinicopathologic study of isolated intestinal allografts with preformed IgG lymphocytotoxic antibodies. Transplant Proc 2002; 34:878-80. [PMID: 12034218 DOI: 10.1016/s0041-1345(02)02650-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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100
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Nakao A, Nalesnik MA, Azhipa O, Ishikawa T, Abu-Elmagd K, Starzl TE, Murase N. Immunodulation of intestinal transplantation: antilymphocyte serum donor pretreatment vs. ex vivo graft irradiation. Transplant Proc 2002; 34:986-7. [PMID: 12034273 PMCID: PMC2957086 DOI: 10.1016/s0041-1345(02)02731-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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