Rei Yasuda

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Brain MRI in adult patients with Alexander disease (AxD) mainly shows atrophy in the medulla oblongata. However, currently there is no quantitative standard for assessing this atrophy. In this study, we quantitatively evaluated the brain stem of AxD patients with glial fibrillary acidic protein (GFAP) mutation using conventional MRI to evaluate its(More)
In Tokyo Japanese, vowel devoicing is a common process leading to the reduction of high, unstressed vowels, mostly when they occur between unvoiced consonants. Native Japanese speakers learning German show a strong tendency to produce these devoiced vowels in the foreign language, too, despite the lack of this regular process in that language, here in(More)
A 62-year-old man with myasthenia gravis (MG) was admitted with dyspnea, bulbar symptoms (dysphagia and dysarthria), and subsequent muscular weakness of the limbs. Results for anti-acetylcholine receptor antibody and muscle-specific kinase antibody were negative. We introduced periodic plasma exchange as a new therapeutic strategy. Once double-filtration(More)
BACKGROUND In hereditary myopathy with early respiratory failure (HMERF), cytoplasmic bodies (CBs) are often localised in subsarcolemmal regions, with necklace-like alignment (necklace CBs), in muscle fibres although their sensitivity and specificity are unknown. OBJECTIVE To elucidate the diagnostic value of the necklace CBs in the pathological diagnosis(More)
Alexander disease (AxD) is a rare hereditary neurodegenerative disorder caused by glial fibrillary acidic protein (GFAP) gene mutations, most of which are missense mutations. We present an AxD case with a novel de novo three-base duplication mutation in GFAP resulting in E243dup.
A 79-year-old man was admitted due to progressive weakness of both hands for two and a half years. Neurologically, he presented with weakness of the upper limbs, predominantly in the left distal portion, and hypoactive deep tendon reflexes. Nerve conduction studies were consistent with a motor and sensory demyelinating neuropathy. Sural nerve biopsy(More)
We herein report the case of a patient with hepatitis C virus (HCV)-associated neuropathy with atypical pathological findings of a biopsied sural nerve. A 48-year-old man was admitted for a gait disturbance. Purpura and edema on the legs and hyperalgesia on the distal extremities were noted. The plasma HCV viral load was high, and cryoglobulin was positive.(More)
In Tokyo Japanese, vowel devoicing is a common process, that leads to the reduction of high, unstressed vowels (<i> and <u>) between unvoiced consonants. This article investigates to what extent native Japanese speakers (L1) learning German as foreign language (L2) show a strong tendency to produce these vowels in the foreign language as devoiced, too.(More)
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