Kazushi Takahashi

Learn More
REM sleep behavior disorder (RBD) is known to be observed more frequently in patients with an α-synucleinopathy such as Parkinson’s disease (PD) than in the general population. The precise prevalence of RBD in Japanese PD patients is not known. Therefore, we investigated the prevalence and the clinical characteristics of patients with RBD in a large(More)
To elucidate the flow of C assimilated by rice plants into soil C, soil biomass C, and emitted CH4 at different rice growth stages, 13C pulse-labeling was conducted at the maximum-tiller-number (first experiment), booting (second experiment), and milky stages (third experiment) for potted rice grown outdoors under flooded conditions. The distribution of the(More)
The objective of this multicenter cross-sectional study was to determine the prevalence of fatigue and factors contributing to it in a large sample of Japanese patients with Parkinson's disease (PD). We used the 16-item Parkinson Fatigue Scale (PFS-16), which was designed to assess fatigue exclusively associated with PD. We carried out this study using(More)
OBJECTIVE The aim of this work was to investigate the prevalence of camptocormia and the clinical characteristics of patients with camptocormia in a large population of PD patients. BACKGROUND Although camptocormia has been recognized as a prominent phenomenon in PD, the previous epidemiological reports were limited, especially in terms of sample size. (More)
This study aimed to investigate the coordination of multiple control actions involved in human horizontal gaze orienting or arm pointing to a common visual target. The subjects performed a visually triggered reaction time task in three conditions: (1) gaze orienting with a combined eye saccade and head rotation (EH), (2) arm pointing with gaze orienting by(More)
Static encephalopathy of childhood with neurodegeneration in adulthood (SENDA) is an X-linked dominant neurodegenerative disorder, and is classified as a subtype of neurodegeneration with brain iron accumulation. Recently, de novo heterozygous mutations in WDR45 at Xp11.23 have been reported in patients with SENDA. We report the clinical and(More)
Primary production by phytoplankton in the eutrophic Mikawa Bay, Japan, was studied by simultaneous measurements of natural carbon isotope ratio (δ 13C) and short-term carbon uptake rates (13C tracer study) of size-fractionated nannoplankton (<10 μm) and net plankton (>10 μm) samples. Short-term photosynthetic rates, which represent the physiological state(More)
We aimed to characterize the relationship between cardiac sympathetic and parasympathetic dysfunction employing cardiac (123)I-meta-iodobenzylguanidine (MIBG) uptake and other autonomic function parameters in Parkinson's disease (PD). 79 PD patients were studied. We performed (123)I-MIBG myocardial scintigraphy to assess the extent of cardiac sympathetic(More)
BACKGROUND Eosinophilia in haemodialysis patients probably results from allergy to haemodialysis-related materials, including dialyzer membranes. We examined the effects of vitamin E-bonded dialyzers on eosinophil counts in haemodialysis patients. METHODS We enrolled seven patients who were on regular haemodialysis and had sustained eosinophilia. White(More)
OBJECTIVE This multicenter cross-sectional study aimed to investigate the clinical features and varieties of non-motor fluctuation in Parkinson's disease (PD). METHODS To identify motor and non-motor fluctuation, we employed the wearing-off questionnaire of 19 symptoms (WOQ-19) in 464 PD patients. We compared the frequency of levodopa-related fluctuation(More)