Publications by authors named "Masafumi Kishi"

Self-healing ability is crucial to increasing the lifetime and reliability of materials. In this study, spatiotemporal control of the healing of a polysiloxane material is achieved using a cleavable cage compound encapsulating a fluoride ion (F ), which triggeres the dynamic rearrangement of the siloxane (Si-O-Si) networks. A self-healing siloxane-based elastomer is prepared by cross-linking polydimethylsiloxane (PDMS) with a F -encapsulating cage-type germoxane (Ge-O-Ge) compound.

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An 81-year-old man experienced acute progression of weakness in the extremities accompanied by a fever, tenderness, and swelling in distal parts of the extremities. He had flaccid tetraparesis with fasciculations and general hyporeflexia. Nerve conduction studies indicated demyelinating sensorimotor neuropathy.

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A 72-year-old male complained of fever lasting 1 month and developed muscle weakness and paresthesia in the legs. He presented with muscle weakness, grasping pain, decreased deep tendon reflexes in the extremities, and reduction of tactile sensation in the distal parts of the left leg muscles. Blood tests revealed leukocytosis and inflammatory reactions.

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A 83-year-old woman complained of muscular weakness in the left leg and trembling in all extremities. She was apathetic and had left leg paresis and asterixis in all extremities. Magnetic resonance imaging revealed acute cerebral infarctions in the bilateral frontal lobes perfused by the anterior cerebral artery (ACA).

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Background: Mild parkinsonian signs are important clinical symptoms related to the decline of motor and cognitive functions. We aimed to identify predictors for the incidence of mild parkinsonian signs in older Japanese by conducting an 8-year longitudinal community-based cohort study.

Methods: Participants aged 65 years or older, living in Ama-cho, a rural island town in western Japan, underwent a baseline assessment of motor function, cognitive function, depression score, the Pittsburgh Sleep Quality Index (PSQI), the Tanner questionnaire, and cerebral white matter lesions on brain magnetic resonance imaging from 2008 to 2010, and then underwent a follow-up neurological examination from 2016 to 2017.

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Background And Aims: The relationship between exercise and subcortical gray matter volume is not well understood in the elderly population, although reports indicate that exercise may prevent cortical gray matter atrophy. To elucidate this association in the elderly, we measured subcortical gray matter volume and correlated this with volumes to exercise habits in a community-based cohort study in Japan.

Methods: Subjects without mild cognitive impairment or dementia (n = 280, 35% male, mean age 73.

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Objective: Rapid eye movement (REM) sleep behavior disorder (RBD) is important not only as a preclinical symptom of Parkinson's disease (PD), but also as an aggravating symptom of PD. However, it is not known whether the onset of RBD in relation to PD affects the clinical characteristics of PD. A cross-sectional study comparing clinical characteristics of PD between patients with RBD occurring before and after the onset of PD was conducted.

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Introduction: The REM sleep behavior disorder (RBD) screening questionnaire (RBDSQ) has been used as a screening tool for RBD. We investigated the clinical characteristics of probable RBD (pRBD) using the RBDSQ in patients with Parkinson's disease (PD).

Methods: Seventy patients with PD (age: 69.

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We aimed to clarify the longitudinal course of mild parkinsonian signs (MPS) and their association with dementia and functional disability by conducting a comprehensive epidemiological study, including brain MRI, and assessments of cognition, depression, and sleep, in people aged ≥65years living in Ama-cho. We diagnosed MPS and parkinsonism (PS) using a modified Unified Parkinson's Disease Rating Scale. The phase I study was conducted between 2008 and 2010 (n=729) and the phase II between 2011 and 2013 (n=436).

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