Skip Navigation
Skip to contents

JMD : Journal of Movement Disorders

OPEN ACCESS
SEARCH
Search

Search

Page Path
HOME > Search
4 "Beom Seok Jeon"
Filter
Filter
Article category
Keywords
Publication year
Authors
Funded articles
Original Article
Clinical Heterogeneity of Atypical Pantothenate Kinase-Associated Neurodegeneration in Koreans
Jae-Hyeok Lee, Jongkyu Park, Ho-Sung Ryu, Hyeyoung Park, Young Eun Kim, Jin Yong Hong, Sang Ook Nam, Young-Hee Sung, Seung-Hwan Lee, Jee-Young Lee, Myung Jun Lee, Tae-Hyoung Kim, Chul Hyoung Lyoo, Sun Ju Chung, Seong Beom Koh, Phil Hyu Lee, Jin Whan Cho, Mee Young Park, Yun Joong Kim, Young H. Sohn, Beom Seok Jeon, Myung Sik Lee
J Mov Disord. 2016;9(1):20-27.   Published online January 25, 2016
DOI: https://doi.org/10.14802/jmd.15058
  • 18,447 View
  • 211 Download
  • 13 Citations
AbstractAbstract PDFSupplementary Material
Objective
Neurodegeneration with brain iron accumulation (NBIA) represents a group of inherited movement disorders characterized by iron accumulation in the basal ganglia. Recent advances have included the identification of new causative genes and highlighted the wide phenotypic variation between and within the specific NBIA subtypes. This study aimed to investigate the current status of NBIA in Korea.
Methods
We collected genetically confirmed NBIA patients from twelve nationwide referral hospitals and from a review of the literature. We conducted a study to describe the phenotypic and genotypic characteristics of Korean adults with atypical pantothenate kinase-associated neurodegeneration (PKAN).
Results
Four subtypes of NBIA including PKAN (n = 30), PLA2G6-related neurodegeneration (n = 2), beta-propeller protein-associated neurodegeneration (n = 1), and aceruloplasminemia (n = 1) have been identified in the Korean population. The clinical features of fifteen adults with atypical PKAN included early focal limb dystonia, parkinsonism-predominant feature, oromandibular dystonia, and isolated freezing of gait (FOG). Patients with a higher age of onset tended to present with parkinsonism and FOG. The p.R440P and p.D378G mutations are two major mutations that represent approximately 50% of the mutated alleles. Although there were no specific genotype-phenotype correlations, most patients carrying the p.D378G mutation had a late-onset, atypical form of PKAN.
Conclusions
We found considerable phenotypic heterogeneity in Korean adults with atypical PKAN. The age of onset may influence the presentation of extrapyramidal symptoms.
Letter to the editor
Dural Arteriovenous Fistula-Associated Reversible Parkinsonism with Presynaptic Dopaminergic Loss
Hang Rai Kim, Jee-Young Lee, Yu Kyeong Kim, Hyeyoung Park, Han-Joon Kim, Young-Je Son, Beom Seok Jeon
J Mov Disord. 2015;8(3):141-143.   Published online September 10, 2015
DOI: https://doi.org/10.14802/jmd.15021
  • 12,239 View
  • 61 Download
  • 4 Citations
PDF
Review Article
Maladaptive Reward-Learning and Impulse Control Disorders in Patients with Parkinson’s Disease: A Clinical Overview and Pathophysiology Update
Jee-Young Lee, Beom Seok Jeon
J Mov Disord. 2014;7(2):67-76.   Published online October 30, 2014
DOI: https://doi.org/10.14802/jmd.14010
  • 36,426 View
  • 120 Download
  • 8 Citations
AbstractAbstract PDF
Impulse control disorders (ICD) in Parkinson’s disease (PD) are a disabling non-motor symptom with frequencies of 13–35% among patients receiving dopamine replacement therapy. ICD in PD is strongly associated with dopaminergic drug use, especially non-ergot dopamine agonists (DA). However, individual susceptibility and disease-related neural changes are also important contributors to the development of ICD. Discrepancies between nigrostriatal and mesolimbic dopaminergic degeneration and non-physiological administration of dopaminergic drugs may induce abnormal ’hyperstimulation’ of the mesolimbic system, which alters reward-learning behaviors in PD patients. In addition, DA can make patients more impulsive during decision-making and seek risk-taking behaviors. DA intake is also related to the biased representation of rewards. Ultimately, loss of negative feedback control due to dysfunctional frontostriatal connections is necessary for the establishment of ICD in PD. The subsequent behavioral and neural changes are affected by PD treatment and disease progression; thus, proper treatment guidelines for physicians are needed to prevent the development of ICD. Future studies aimed at producing novel therapeutics to control the risk factors for ICD or treat ICD behaviors in PD are warranted. This review summarizes recent advances from epidemiological and pathophysiological studies on ICD in PD. Management principles and limitations of current therapeutics are briefly discussed.
Case Report
A Case of Adrenoleukodystrophy Presenting as Progressive Cerebellar Dysfunction
Seunguk Jung, Jong Won Chung, Ji Young Yun, Han-Joon Kim, Beom Seok Jeon
J Mov Disord. 2009;2(2):91-94.
DOI: https://doi.org/10.14802/jmd.09025
  • 11,737 View
  • 78 Download
  • 3 Citations
AbstractAbstract PDF

X-linked adrenoleukodystrophy (X-ALD) is a hereditary neurological disorder affecting the nervous system and adrenal cortex. The phenotype of X-ALD ranges from the rapidly progressive cerebral form to milder adrenomyeloneuropathy. However, cerebellar manifestations are rare. We report a case of adrenoleukodystrophy presenting as progressive cerebellar dysfunction resembling olivopontocerebellar degeneration, with a review of the literature


JMD : Journal of Movement Disorders