Koichi Hirata: Influence Statistics

Koichi Hirata

Koichi Hirata

Department of Neurology, Dokkyo Medical University. | Department of Neurology, Dokkyo medical university, Tochigi, Japan | Department of Neurology, Dokkyo Medical University, ...

Koichi Hirata: Expert Impact

Concepts for which Koichi Hirata has direct influence: Japanese patients , Barré syndrome , Fisher syndrome , Cryptogenic stroke , Migraine patients , Restless legs syndrome , Parkinson disease .

Koichi Hirata: KOL impact

Concepts related to the work of other authors for which for which Koichi Hirata has influence: Barré syndrome , Campylobacter jejuni , Parkinson disease , Sleep disorders , Chronic inflammatory , Intravenous immunoglobulin , Functional connectivity .

KOL Resume for Koichi Hirata

Year
2022

Department of Neurology, Dokkyo Medical University.

Headache Center, Dokkyo Medical University, Mibu, Japan.

獨協医科大学病院頭痛センター

2021

Department of Neurology, Dokkyo Medical University, Tochigi, 321-0293, Japan.

Headache Center, Dokkyo Medical University, Tochigi, Japan

2020

Department of Orthopaedic Surgery, Tochigi Medical Center Shimotsuga, Tochigi, Japan.

2019

Department of Neurology, Dokkyo Medical University Hospital

Dokkyo Medical University, Japan

2018

Department of Neurology, Dokkyo Medical University, Tochigi 3210293, Japan.

2017

Department of Neurology Dokkyo Medical University Shimotsuga Tochigi Japan

2016

6, Department of Neurology, Dokkyo Medical University, Tochigi, Japan

2015

Department of Neurology, Dokkyo Medical University, Mibu-machi, Japan

2014

From the Faculty of Medicine (N.S.), University of Malaya, Kuala Lumpur, Malaysia; Dokkyo Medical University (N.K., K.H.), Tochigi, Japan; Graduate School of Medicine (S.S., S.K.), Chiba University, Japan; National Neurosciences Institute (T.U.), Singapore; and National University Singapore (Y.-C.C., N.Y.), Singapore.

Department of Neurology, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Shimotsuga 321-0293, Tochigi, Japan

2013

Department of Neurology, Dokkyo Medical University, 880 Kitakobayashi, Mibu, Tochigi 321-0293, Japan

2012

Department of Neurology, Dokkyo Medical University, 880 Kitakobayashi, Shimotsuga-gun Mibumachi, Tochigi 321-0207, Japan

2011

Department of Neurology, Dokkyo University School of Medicine, Tochigi, Japan

2010

Department of Neurology, Dokkyo University School of Medicine, Mibu, Tochigi 321-0293, Japan

2009

Department of Neurology, Dokkyo Medical University School of Medicine, 321-0293, Mibu, Tochigi, Japan

Neurology, Dokkyo Medical University School of Medicine, Mibu, and

2008

Department of Neurology, Dokkyo Medical University, Kitakobayashi 880, Mibu, Shimotsuga, Tochigi 321-0293, Japan

2007

Department of Neurology and Research Institute for Neuroimmunological Diseases, Dokkyo Medical University School of Medicine, Tochigi, Japan;

2006

Department of Neurology, Dokkyo University School of Medicine, Tochigi, Departments of, Cerebrovascular Disease, and, Neurosurgery, National Kyushu Medical Center, and, Nagao Hospital, Fukuoka, Japan

Prominent publications by Koichi Hirata

KOL-Index: 18432 . OBJECTIVES: To clarify the nosological relation among Miller Fisher syndrome (MFS), Guillain-Barré syndrome (GBS) with ophthalmoplegia, Bickerstaff's brain stem encephalitis (BBE), and acute ophthalmoparesis without ataxia. Serum samples from patients with each condition often have anti-GQ1b IgG antibody. METHODS: Information on antecedent illness, initial symptoms, neurological signs ...
Known for Bbe Gbs | Igg Anti | Patients Mfs | Acute Ophthalmoparesis
KOL-Index: 16557 . OBJECTIVE: A phase 2, double-blind, placebo-controlled study to evaluate the efficacy and safety of erenumab for the prevention of episodic migraine in Japanese patients was conducted. BACKGROUND: Previous global clinical studies have demonstrated the efficacy of erenumab in the prevention of migraine. METHODS: Patients were randomized to placebo or erenumab 28, 70, or 140 mg administered ...
Known for Episodic Migraine | Erenumab Placebo | Phase 2 | Greater Reductions
KOL-Index: 15606 . This electroencephalographic (EEG) study tested whether cortical EEG rhythms (especially delta and alpha) show a progressive increasing or decreasing trend across physiological aging. To this aim, we analyzed the type of correlation (linear and nonlinear) between cortical EEG rhythms and age. Resting eyes-closed EEG data were recorded in 108 young (Nyoung; age range: 18-50 years, mean age ...
Known for Physiological Aging | Cortical Rhythms | Eeg Study | Hz Alpha
KOL-Index: 14762 . Guillain-Barré syndrome is divided into two major subtypes, acute inflammatory demyelinating polyneuropathy and acute motor axonal neuropathy. The characteristic electrophysiological features of acute motor axonal neuropathy are reduced amplitude or absence of distal compound muscle action potentials indicating axonal degeneration. In contrast, autopsy study results show early nodal ...
Known for Conduction Block | Motor Axonal | Ulnar Nerve | 18 Patients
KOL-Index: 14368 . BACKGROUND: Increasing evidence provides a clear association between rapid eye movement sleep behavior disorders (RBD) and Parkinson's disease (PD), but the clinical features that determine the co-morbidity of RBD and PD are not yet fully understood. METHODS: We evaluated the characteristics of nocturnal disturbances and other motor and non-motor features related to RBD in patients with PD ...
Known for Nocturnal Disturbances | Rbd Patients | Sleep Behavior | Quality Life
KOL-Index: 13191 . IgA has an important function in the gastrointestinal immune system. We investigated IgA anti-ganglioside antibodies in Guillain-Barré syndrome (GBS) and Fisher's syndrome (FS) subsequent to Campylobacter jejuni enteritis. In previous studies, serological diagnosis of C. jejuni infection was based on the detection of IgG, IgA, and IgM anti-C. jejuni antibodies. Our study, however, showed ...
Known for Jejuni Infection | Iga Anti | Gbs Patients | Ganglioside Gangliosides
KOL-Index: 12498 . Autoantibodies against gangliosides GM1 or GD1a are associated with acute motor axonal neuropathy (AMAN) and acute motor-sensory axonal neuropathy (AMSAN), whereas antibodies to GD1b ganglioside are detected in acute sensory ataxic neuropathy (ASAN). These neuropathies have been proposed to be closely related and comprise a continuous spectrum, although the underlying mechanisms, ...
Known for Sensory Nerves | Nodes Ranvier | Mediated Neuropathies | Ganglioside Antibody
KOL-Index: 12237 . Paranodal axo-glial junctions are important for ion channel clustering and rapid action potential propagation in myelinated nerve fibers. Paranode formation depends on the cell adhesion molecules neurofascin (NF) 155 in glia, and a Caspr and contactin heterodimer in axons. We found that antibody to ganglioside GM1 labels paranodal regions. Autoantibodies to the gangliosides GM1 and GD1a ...
Known for Myelinated Nerve Fibers | Paranodal Junctions | Gangliosides Gm1 | Nodes Ranvier
KOL-Index: 12091 . OBJECTIVE: The aim of this study was to assess the validity and the reliability of the Japanese version of the Parkinson's disease sleep scale (PDSS)-2 and to use this scale to identify nocturnal symptoms and their impact on patient's quality of life. METHODS: A cross-sectional, case-controlled study was conducted consisting of 93 patients with Parkinson's disease (PD) and 93 age- and ...
Known for Nocturnal Disturbances | Japanese Version | Disease Sleep | Rls Patients
KOL-Index: 12069 . OBJECTIVE: RBD is considered to be a manifestation of an evolving synucleinopathy, such as Parkinson disease (PD), dementia of Lewy bodies (DLB), and multiple system atrophy (MSA). We tested whether the degree of accumulation of cardiac 123I-MIBG scintigraphy can distinguish the clinical syndromes associated with Lewy body-related disease from the syndrome of PSP (a tauopathy) and ...
Known for Idiopathic Rbd | Mibg Cardiac | Msa Psp | Behavior Disorder
KOL-Index: 11437 . Molecular mimicry between microbial and self-components is postulated as the mechanism that accounts for the antigen and tissue specificity of immune responses in postinfectious autoimmune diseases. Little direct evidence exists, and research in this area has focused principally on T cell-mediated, antipeptide responses, rather than on humoral responses to carbohydrate structures. ...
Known for Carbohydrate Mimicry | Barré Syndrome | Ganglioside Gm1 | Campylobacter Jejuni
KOL-Index: 11433 . Bickerstaff reported eight patients who, in addition to acute ophthalmoplegia and ataxia, showed drowsiness, extensor plantar responses or hemisensory loss. This condition has been named Bickerstaff's brainstem encephalitis (BBE). One patient had gross flaccid weakness in the four limbs. Presumably because of the rarity of this disorder, there has been no reported study on a large number ...
Known for Barré Syndrome | Patients Bbe | Brainstem Encephalitis | Disturbance Consciousness
KOL-Index: 11361 . OBJECTIVES: To identify valuable antiganglioside antibodies that support the diagnosis of Guillain-Barré syndrome (GBS) and its variants in patients showing bulbar palsy as an initial symptom. METHODS: Medical records of 602 patients with GBS or its variants were reviewed. Fifteen patients had bulbar palsy as an initial symptom. Serum antibodies against GM1, GM1b, GD1a, GalNAc-GD1a, GT1a, ...
Known for Bulbar Palsy | Igg Anti | Barré Syndrome | Pcb Gbs
KOL-Index: 11250 . BACKGROUND: Patients with Guillain-Barré syndrome (GBS) after Mycoplasma pneumoniae infection often have antibodies to galactocerebroside (GalC). Electrodiagnosis may show acute inflammatory demyelinating polyneuropathy (AIDP). METHODS: The authors report a patient with acute motor axonal neuropathy (AMAN) after Mycoplasma infection and review seven cases of Mycoplasma-associated GBS. They ...
Known for Mycoplasma Infection | Acute Motor | Axonal Neuropathy | Immunoglobulin Immunoglobulins
KOL-Index: 11142 . Patients with the pharyngeal-cervical-brachial variant (PCB) of Guillain-Barré syndrome (GBS) have anti-GT1a IgG with or without GQ1b reactivity, whereas those with Fisher syndrome (FS) or Bickerstaff's brainstem encephalitis (BBE) have anti-GQ1b IgG antibodies which cross-react with GT1a. The nosological relationship between these conditions has yet to be established. To investigate the ...
Known for Clinical Correlates | Patients Anti | Gbs Bbe | Gt1a Igg

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Department of Neurology, Dokkyo Medical University. | Department of Neurology, Dokkyo medical university, Tochigi, Japan | Department of Neurology, Dokkyo Medical University, 880 Kitakobayashi, Mibu, 321-0293, Shimotsuga, Tochigi, Japan | Headache Ce