Hiroaki Yaguchi

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OBJECTIVE To characterize factors that contribute to symptomatic narcolepsy and excessive daytime sleepiness in neuromyelitis optica and multiple sclerosis. SETTING Japanese university hospitals. DESIGN Case study. PATIENTS Seven Japanese patients whose initial diagnoses were multiple sclerosis and who were exhibiting excessive daytime sleepiness. (More)
Rheumatoid meningitis (RM) is one of the most severe complications of rheumatoid arthritis. The mortality rate of RM is relatively high and diagnosis can be difficult. We present an 80-year-old woman who was diagnosed with microscopic findings of RM after analysis of biopsy specimens taken from a brain lesion. MRI scanning revealed meningeal enhancement in(More)
A pregnant woman with extensive brain lesions on magnetic resonance imaging was tested positive for anti-aquaporin4 (AQP4) antibodies. An open biopsy of the left temporal lobe showed pathological changes in both the white and gray matter. Hematoxylin and eosin, Klüver-Barrera, and myelin basic protein staining results were indicative of demyelination in the(More)
We present novel carbon-nanotube-based saturable absorbers. Using the low-temperature alcohol catalytic chemical-vapor deposition method, high-quality single-walled carbon nanotubes (SWNTs) were directly synthesized on quartz substrates and fiber ends. We successfully applied the SWNTs to mode lock a fiber laser producing subpicosecond pulses at a 50-MHz(More)
A typical prosthetic limb has sensory shortcomings, one of which is lack of kinesthesia. Conventional methods to evoke kinesthesia, which would be required for a precise control of prosthetic limbs, include tendon vibration and skin stretch, but these produce only the sensation of small movements. In this study, tendon vibration is extended to evoke(More)
A 23-year-old man complained of weakness of the right arm that he first noted six years prior to his visit. Neurological examination revealed atrophy and weakness of the triceps and serratus anterior muscle on the right side, which resulted in scapular winging on that side. MRI with neck flexion revealed compression of the cervical cord enabling a diagnosis(More)
OBJECTIVE To confirm the reported findings and clarify unknown clinical features of Churg-Strauss syndrome (CSS)-associated neuropathy and design appropriate treatment. PATIENTS AND METHODS We assessed the clinical features of 6 patients with CSS-associated neuropathy. RESULTS Mononeuritis multiplex was present in 4 cases and polyneuropathy in the(More)
Relapsing polychondritis (RP) is a rare multisystem autoimmune disease. Though meningitis in RP is not common, some cases with cerebrospinal fluid (CSF) pleocytosis of the lymphocyte cells have been reported. Of the 18 previously reported cases, two cases demonstrated pleocytosis of polymorphonuclear leukocytes (PMN) in the CSF. In addition, cases with a(More)