Sun Ju Chung
University of Ulsan
Genome-wide association studyInternal medicineDopaminergicSurgeryPathologySingle-nucleotide polymorphismPsychologyNeurologyPhysical therapyParkinsonismDiseaseParkinson's diseaseLevodopaAtrophyIn patientAnesthesiaGeneticsMedicineRating scaleBiology
218Publications
33H-index
3,326Citations
Publications 218
Newest
#1Sungyang Jo (UOU: University of Ulsan)H-Index: 4
#2Jungsu S. Oh (UOU: University of Ulsan)H-Index: 24
Last. Miseon Kwon (UOU: University of Ulsan)H-Index: 8
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Abstract null null Introduction null Apraxia is a core clinical feature of corticobasal syndrome (CBS). Among the subtypes of apraxia, ideomotor and imitation apraxia are frequently found in CBS. However, little is known about the brain networks that are characteristic of each apraxia subtype or their clinical implication. In this study, we used 18F-fluorodeoxyglucose positron emission tomography (FDG-PET) to explore the specific patterns of glucose hypometabolism that are characteristic of apra...
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#1Jinse Park (Inje University)H-Index: 14
#2Seong Beom Koh (KU: Korea University)H-Index: 25
Last. Jin Young Ahn (Asan Medical Center)H-Index: 8
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#1Jong-Ho Park (SMC: Samsung Medical Center)H-Index: 4
#2Inho Park (Yonsei University)
Last. Jong-Won Kim (SMC: Samsung Medical Center)H-Index: 38
view all 27 authors...
Alzheimer’s disease (AD) is a progressive neurodegenerative disease associated with a complex genetic etiology. Besides the apolipoprotein E e4 (APOE e4) allele, a few dozen other genetic loci associated with AD have been identified through genome-wide association studies (GWAS) conducted mainly in individuals of European ancestry. Recently, several GWAS performed in other ethnic groups have shown the importance of replicating studies that identify previously established risk loci and searching ...
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#1Sungyang Jo (UOU: University of Ulsan)H-Index: 4
#2Ye-Jee Kim (UOU: University of Ulsan)H-Index: 1
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
view all 7 authors...
Importance The development of Parkinson disease (PD) may be promoted by exposure to air pollution. Objective To investigate the potential association between exposure to particulate matters (PM2.5 and PM10), nitrogen dioxide (NO2), ozone (O3), sulfur dioxide (SO2), and carbon monoxide (CO) and the risk of incident PD. Design, setting, and participants This retrospective cohort study used data from the Korean National Health Insurance Service. Among the 1 021 208 Korean individuals in the databas...
3 CitationsSource
#1Sung Reul Kim (KU: Korea University)H-Index: 9
#2Ji Young Kim (CBNU: Chonbuk National University)H-Index: 6
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
view all 5 authors...
Objective Medication beliefs are a significant determinant of medication adherence in chronic illness. This study aimed to identify demographic, clinical, and medication-related factors associated with medication beliefs in patients with Parkinson's disease (PD). Methods We used a descriptive cross-sectional design with a convenience sample of 173 PD patients who had been taking antiparkinson drugs for more than one year. Results The subjects who believed PD medication was more necessary had mor...
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#1Sungyang Jo (UOU: University of Ulsan)H-Index: 4
#2Seon-Ok Kim (UOU: University of Ulsan)H-Index: 20
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
view all 6 authors...
We aimed to investigate the role of the APOE genotype in cognitive and motor trajectories in Parkinson's disease (PD). Using PD registry data, we retrospectively investigated a total of 253 patients with PD who underwent the Mini-Mental State Exam (MMSE) two or more times at least 5 years apart, were aged over 40 years, and free of dementia at the time of enrollment. We performed group-based trajectory modeling to identify patterns of cognitive change using the MMSE. Kaplan-Meier survival analys...
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#1Ho-Sung Ryu (Kyungpook National University Hospital)H-Index: 3
#1Ho-Sung Ryu (Kyungpook National University Hospital)H-Index: 3
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
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Abstract Background Nocturnal stridor is an important issue in patients with multiple system atrophy (MSA). However, little is known about the polysomnographic findings and clinical features of patients with MSA with nocturnal stridor, and its clinical implications. Objectives We aimed to investigate the video-polysomnography findings (VPSG) and clinical features associated with nocturnal stridor in patients with MSA. Methods We retrospectively analyzed the clinical data of patients with MSA (n ...
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#1Kye Won Park (UOU: University of Ulsan)H-Index: 4
#2Eun-Jae Lee (UOU: University of Ulsan)H-Index: 15
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
view all 11 authors...
Objective: We developed and investigated the feasibility of a machine learning-based automated rating for the two cardinal symptoms of Parkinson’s disease (PD); resting tremor and bradykinesia. Methods: Using Openpose, a deep-learning-based human pose estimation program, we analyzed video-clips for resting tremor and finger tapping of the bilateral upper limbs of 55 patients with PD (110 arms). Key motion parameters, including resting tremor amplitude and finger tapping speed, amplitude, and fat...
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#1Kye Won Park (UOU: University of Ulsan)H-Index: 4
#2Sungyang Jo (UOU: University of Ulsan)H-Index: 4
Last. Sun Ju Chung (UOU: University of Ulsan)H-Index: 33
view all 10 authors...
Background: Cognitive impairment is very common in Parkinson’s disease (PD) and constitutes the most debilitating complication of this disease. However, to date, few studies have investigated genome-wide association in the development of cognitive impairment of PD. We aimed to identify the genetic loci associated with cognitive impairment in patients with sporadic PD by ethnicity-specific genotyping. Materials and Methods: We recruited 1,070 patients with PD and performed a genome-wide associati...
1 CitationsSource
#1Hye Joo Son (UOU: University of Ulsan)H-Index: 2
#2Jungsu S. Oh (UOU: University of Ulsan)H-Index: 24
Last. Jae Seung Kim (UOU: University of Ulsan)H-Index: 36
view all 7 authors...
OBJECTIVE 18F-labeled fluoropropyl-carbomethoxylodopropyl-nor-s-tropane ([18F]FP-CIT) positron emission tomography (PET) is a useful tool for evaluating disease progression in Parkinson's disease (PD) patients. We evaluated the test-retest reproducibility of [18F]FP-CIT PET measures in essential tremor (ET) and PD patients. METHODS Fifteen ET (68.9 ± 6.6 years) and 10 PD patients (70.5 ± 6.3 years; Hoehn and Yahr stage, 2.3 ± 0.8) underwent two [18F]FP-CIT PET/CT scans with an interval of 48 ± 7...
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