Publications by authors named "Yuki Ueta"

Objective: It is generally believed that the decremental response in repetitive nerve stimulation (RNS) stabilizes at the fourth or fifth response. We have a preliminary impression that the decremental response approaches a plateau earlier in proximal muscles than in distal muscles. We investigated the speed of the completion of the decremental response in different muscles.

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  • A 40-year-old woman with endometriosis experienced foot drop and sensory issues in her right leg, initially thought to be caused by a lumbar disc herniation.
  • Neurological tests indicated weakness and problems linked to the right sciatic nerve, while imaging revealed an endometriotic cyst and lesions affecting the nerve.
  • The case suggests that endometriosis can lead to cyclic neurological symptoms, particularly during menstruation, and highlights the need to consider endometriosis in young women with sciatic nerve problems.
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  • Freezing of gait (FOG) is a major issue for Parkinson's disease (PD) patients affecting daily life, but its underlying causes are not well understood.
  • *The study examined 53 newly diagnosed, untreated PD patients and classified them into "freezers" and "nonfreezers" based on their FOG symptoms, looking at various clinical factors.
  • *Results indicated that FOG was present in 15% of participants, with freezers showing more severe apathy and motor symptoms, but there were no significant differences in cognitive abilities or depressive symptoms between the groups.*
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Salivary duct carcinoma (SDC) is a rare and highly aggressive salivary gland tumor with rapid growth, distant metastasis, and a high recurrence rate. Moreover, the parotid gland is the most common site with a poor prognosis. A lower frequency of distance metastasis to the liver, skin, and brain has also been reported, although the lungs, bones, and lymph nodes are the most common sites of SDC metastasis.

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  • - An 84-year-old woman experienced persistent left hemichorea due to stenosis in the right middle cerebral artery (MCA), before a cerebral infarction occurred.
  • - She presented to the hospital 9 days after the onset of hemichorea, which lasted for 19 days with no initial signs of cerebral infarction on MRI.
  • - On day 21, she developed left hemiplegia and subsequent MRI revealed a cerebral infarction in the right putamen, indicating that MCA stenosis can cause hemichorea and may predict future infarctions.
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  • The study investigates how functional imaging findings, specifically I-FP-CIT-SPECT, relate to motor symptoms in early-stage Parkinson's disease (PD) patients.
  • It analyzed 46 drug-naive patients, measuring specific binding ratios (SBRs) in brain regions related to motor function and evaluating symptoms with established scales and wearable sensors.
  • Results showed that lower SBRs in the striatum and anterior putamen were linked to worse motor symptoms and gait disturbance, indicating a significant relationship between imaging findings and clinical features of PD.
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  • * A 75-year-old man experienced right-sided hemiplegia (weakness) due to a stroke, accompanied by muscle pain and fever, leading to the EGPA diagnosis despite no history of asthma or allergies.
  • * After starting corticosteroid treatment, the man's hemiplegia improved quickly, indicating that EGPA should be considered in similar cases of stroke combined with muscle pain and high eosinophil levels.
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Background: We investigated the gait characteristics of patients with Parkinson's disease (PD), under free-living conditions, using a wearable device, and assessed their relationships with global cognitive function and motor abnormalities.

Methods: The study subjects comprised patients with PD aged < 80 years, with a Mini-Mental State Examination (MMSE) score of ≥20, free of any motor complications. A wearable sensor with a built-in tri-axial accelerometer was waist-mounted on each patient, and continuous, 24-h records were obtained.

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To determine the association of daily physical activity with cognition, mood disorders, and olfactory function in treatment-naive patients with early-stage Parkinson's disease (PD). The study subjects were 52 treatment-naive patients with early-stage PD (< 80 years). Daily physical activity was measured using a wearable sensor with a built-in triaxial accelerometer, and its association with cognition [mini-mental state examination (MMSE), clock-drawing test (CDT), frontal assessment battery (FAB), and behavioral assessment of the dysexecutive syndrome (BADS)], depressive symptoms [Beck Depression Inventory-Second Edition (BDI-II)], apathy [Starkstein Apathy Scale (AS)], and olfactory function [Odor Stick Identification Test for the Japanese (OSIT-J)] was analyzed using multiple linear regression after adjustment for age, sex, and education status.

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Introduction: Although apathy is a common psychiatric symptom of Parkinson's disease (PD), there are many unknown aspects of its pathology. This study aimed to investigate the characteristics of apathy in treatment-naïve patients with early-stage PD.

Methods: Fifty treatment-naïve patients with early-stage PD were divided into 1 of 2 groups-apathetic or non-apathetic-based on Starkstein Apathy Scale (AS) scores.

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We report a case of meningeal carcinomatosis that needed to be distinguished from subarachnoid hemorrhage. A 67-year-old female with acute severe headache was admitted to a previous hospital. Since high intensity signal was detected within the parietal cerebral sulci on the right side on brain FLAIR MRI, cerebral angiography was performed due to suspicion of subarachnoid hemorrhage.

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An 81-year-old woman presented with a chief complaint of gait disturbance. Brain magnetic resonance imaging (MRI) showed mild cerebellar atrophy and cerebral blood flow scintigraphy revealed reduced blood flow in the cerebellum. The patient was diagnosed with cortical cerebellar atrophy, and was given taltirelin hydrate, but symptoms slowly progressed.

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