Publications by authors named "Jin-Whan Cho"

Article Synopsis
  • * Among 232 probands, 66 individuals (28.4%) had genetic diagnoses and 12 (5.2%) had non-genetic causes, highlighting the challenges faced in diagnosing those with probable genetic origins or early symptom onset.
  • * The research emphasizes that integrating sequencing methods not only improves diagnostic accuracy but also facilitates better health management strategies, including surveillance and personalized planning for affected adults.
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This multicentre, prospective, single-arm study evaluated safinamide as add-on therapy to levodopa in Korean patients with Parkinson's disease (PD) with motor fluctuations with ≥ 1.5 h of "off" time daily, who took levodopa ≥ 3 times/day (n = 199). Baseline levodopa and dopamine agonist doses were maintained without escalation during the 18-week treatment period.

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Background: Reduced cerebrospinal fluid (CSF) clearance may play a vital role in the pathogenesis of normal pressure hydrocephalus (NPH), but the radiologic marker is yet to be elucidated.

Objectives: This open-label study presents two novel neuroimaging biomarkers based on enlarged perivascular spaces (ePVS) of the sub-insular territory: the Hedgehog and Hedgehog-Halo (H-H) sign, designed to predict gait symptom severity and tap response in NPH.

Methods: We retrospectively reviewed 203 patients with possible NPH with baseline magnetic resonance imaging and gait analyses before and after lumbar puncture (LP).

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Objective: We conducted this study to assess the efficacy and safety of taltirelin hydrate (TH) in spinocerebellar degeneration (SCD).

Methods: Patients were randomly assigned to either the taltirelin group (5 mg orally, twice daily) or the control group. The primary endpoint was changes in the Korean version of Scale for the Assessment and Rating of Ataxia (K-SARA) scores at 24 weeks.

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  • The study explores the relationship between spinal cord injury (SCI) and the risk of Parkinson's disease (PD), which has not been clearly defined before.
  • Using data from the Korean National Health Insurance Service, researchers compared 7,182 SCI patients to 24,844 matched controls over a mean follow-up of 4.31 years.
  • Results indicate that SCI patients have a higher risk of developing PD, especially those with disabilities and injuries at the thoracic level, with cervical injuries posing a greater risk for those without disabilities.
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  • Rare diseases are mostly genetic and often have neurological symptoms, making their diagnosis and treatment complicated due to their rarity and low prevalence.
  • A national registry has been established in Korea to focus on three specific rare diseases that cause gait disturbances, collecting clinical data and biological materials from patients.
  • The registry aims to identify genetic variants specific to Korean patients and discover biomarkers to improve early diagnosis and treatment development for these conditions.
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Article Synopsis
  • - The study aimed to evaluate the reliability and validity of the Korean version of the SCales for Outcomes in Parkinson's Disease-Cognition (K-SCOPA-Cog) for assessing cognition in Parkinson's disease patients in South Korea.
  • - A total of 129 patients participated, and various statistical methods, including Cronbach's alpha and Spearman’s rank correlation, were employed to test the reliability and concurrent validity against established cognitive assessments.
  • - Results showed that the K-SCOPA-Cog has strong reliability (Cronbach's alpha of 0.797, ICC of 0.887) and a significant correlation with other cognitive measures (MOCA-K and K-MMSE), indicating it is a valid tool for cognitive assessment in this
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Background Exercise is crucial for the well-being of people with Parkinson's disease (PD). Although there are challenges to exercising with PD, mobile apps are seen as potential solutions, though their impact is not yet fully understood. We developed a mobile app and a home-based exercise program specialised for people with PD and investigated the effect of the mobile exercise app for the people with PD.

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Tardive dyskinesia (TD) is a movement disorder that can arise as a side effect of treatment with dopamine receptor-blocking agents (DRBAs), including antipsychotic drugs (APDs) used to manage psychotic illnesses. Second-generation APDs (SGAs) are often preferred to first-generation drugs due to their lower propensity to cause TD, however many SGAs-treated patients still develop the condition. Although TD is a global health concern, evidence regarding the occurrence of TD and how it is managed in Asian countries is currently limited.

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Objective: Exercise can improve both motor and nonmotor symptoms in people with Parkinson's disease (PwP), but there is an unmet need for accessible and sustainable exercise options. This study aimed to evaluate the effect, feasibility, and safety of a regularly performed live-streaming tele-exercise intervention for PwP.

Methods: A live-streaming exercise intervention for PwP was implemented twice a week for 12 weeks.

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Introduction: Subjective cognitive complaints (SCC) refer to self-reported cognitive decline that may or may not be reflected in objective neuropsychological evaluations. Such SCC are prevalent in neurodegenerative diseases, including Parkinson's disease (PD), but the prevalence and clinical features in patients with progressive supranuclear palsy (PSP) have not been investigated.

Methods: We recruited 83 PSP patients without dementia and investigated their SCC using a semi-structured interview.

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Article Synopsis
  • - This study investigates waiting impulsivity in patients with progressive supranuclear palsy-Richardson's syndrome (PSP-RS) by examining a behavior known as the "jumping the gun" (JTG) sign, where patients clap prematurely before a start signal.
  • - Researchers compared two groups of PSP-RS patients: those with the JTG sign (JTG +) and those without it (JTG -), finding that JTG + patients scored worse on cognitive tests, experienced more falls, and had distinct neural connectivity in the nucleus accumbens (NAc).
  • - The results suggest that the JTG sign may serve as a marker for waiting impulsivity in PSP-RS, enhancing understanding of this behavior
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  • This study is the first prospective cohort investigation of caregiver burden in Huntington's disease (HD) in Korea, aiming to connect patient and caregiver characteristics with the stress experienced by caregivers.
  • Sixty-five HD patients and 45 caregivers participated, revealing a significant correlation between higher caregiver burden and more severe patient symptoms, as assessed by the Zarit Burden Interview (ZBI-12).
  • The findings highlight that the neurological status of HD patients greatly affects caregiver stress, indicating a need for improved support systems for families affected by HD in Korea and suggesting further study of the impact of disease progression on caregiver burden.
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  • Dystonia is a complex movement disorder with various genetic causes, and this study investigates the role of whole exome sequencing (WES) in identifying these genetic variants in Korean patients with young-onset dystonia.
  • Researchers performed WES on 43 patients, finding 11 disease-causing variants in 9 individuals, which highlights the potential for WES to enhance the understanding and diagnosis of dystonia, particularly in cases that begin in childhood or are generalized.
  • The study suggests that combining clinical assessments, brain imaging, and genetic testing can improve the diagnosis and management of dystonia patients, paving the way for more personalized treatment options.
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Stridor is a rare but important non-motor symptom that can support the diagnosis and prediction of worse prognosis in multiple system atrophy. Recording sounds generated during sleep by video-polysomnography is recommended for detecting stridor, but the analysis is labor intensive and time consuming. A method for automatic stridor detection should be developed using technologies such as artificial intelligence (AI) or machine learning.

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Objective: Safinamide is a selective, reversible monoamine oxidase B inhibitor with demonstrated efficacy and tolerability in placebo-controlled studies and is clinically useful for patients with motor fluctuations. This study evaluated the efficacy and safety of safinamide as a levodopa adjunct therapy in Asian patients with Parkinson's disease.

Methods: Data from 173 Asian and 371 Caucasian patients from the international Phase III SETTLE study were included in this post hoc analysis.

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Safinamide is a selective, reversible, monoamine oxidase B inhibitor for the treatment of patients with Parkinson's disease (PD) and motor fluctuations. This was a analysis of the SETTLE study, in which patients with PD and motor fluctuations were randomly assigned to 24-week treatment with safinamide (50 mg/day for 2 weeks, increased to 100 mg/day if tolerated) or placebo. In the present analysis, responders were defined according to their treatment responses at Week 2 and Week 24 based on changes in ON-time without troublesome dyskinesia from baseline with cutoffs of 1 hour.

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Orthostatic hypotension (OH) is a common non-motor symptom in Parkinson's disease (PD). OH can cause cerebral and retinal hypoperfusion and is associated with microvascular damage in PD. Optical coherence tomography angiography (OCTA) is a non-invasive technology that can be used to visualize the retinal microvasculature and detect microvascular damage in PD.

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Automated segmentation and volumetry of brain magnetic resonance imaging (MRI) scans are essential for the diagnosis of Parkinson's disease (PD) and Parkinson's plus syndromes (P-plus). To enhance the diagnostic performance, we adopt deep learning (DL) models in brain MRI segmentation and compared their performance with the gold-standard non-DL method. We collected brain MRI scans of healthy controls ([Formula: see text]) and patients with PD ([Formula: see text]), multiple systemic atrophy ([Formula: see text]), and progressive supranuclear palsy ([Formula: see text]) at Samsung Medical Center from January 2017 to December 2020.

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  • This study investigates sex differences in gastrointestinal dysfunctions in patients with Parkinson's disease (PD) using data from multiple centers.
  • It analyzes symptoms in relation to the severity of PD and medication dosages, finding that female patients report worse gastrointestinal issues than males.
  • Key findings include that women experienced more nausea, early fullness, and severe upper abdominal pain compared to men, suggesting that gastrointestinal dysfunctions might affect males and females differently in PD.
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Introduction: Fatigue and orthostatic hypotension (OH) are common and disabling nonmotor symptoms (NMSs) of Parkinson's disease (PD), but none of the studies have reported on the longitudinal association between fatigue and OH.

Methods: Drug-naïve PD patients were recruited from a hospital-based cohort and evaluated with the Parkinson Fatigue Scale (PFS), head-up tilt test, Unified PD Rating Scale, Hoehn and Yahr stage, Montreal Cognitive Assessment, Scale for Outcomes in PD-Autonomic (SCOPA-AUT), Beck Depression Inventory (BDI), Beck Anxiety Inventory, PD Sleep Scale, and medications at the baseline and follow-up visits.

Results: A total of 80 patients were included, and the mean ages were 66.

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