Journal of Movement Disorders

Yu Jin Jung

2 Articles

Amantadine and the Risk of Dyskinesia in Patients with Early Parkinson’s Disease: An Open-Label, Pragmatic Trial: Aryun Kim, Young Eun Kim, Ji Young Yun, Han-Joon Kim, Hui-Jun Yang, Woong-Woo Lee, Chae Won Shin, Hyeyoung Park, Yu Jin Jung, Ahro Kim, Yoon Kim, Mihee Jang, Beomseok Jeon; J Mov Disord. 2018;11(2):65-71. Published online May 30, 2018; DOI: https://doi.org/10.14802/jmd.18005

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Objective
We examined whether amantadine can prevent the development of dyskinesia.
Methods
Patients with drug-naïve Parkinson’s disease (PD), younger than 70 years of age and in the early stage of PD (Hoehn and Yahr scale < 3), were recruited from April 2011 to December 2014. The exclusion criteria included the previous use of antiparkinsonian medication, the presence of dyskinesia, significant psychological disorders, and previous history of a hypersensitivity reaction. Patients were consecutively assigned to one of 3 treatment groups in an open label fashion: Group A-1, amantadine first and then levodopa when needed; Group A-2, amantadine first, dopamine agonist when needed, and then levodopa; and Group B, dopamine agonist first and then levodopa when needed. The primary endpoint was the development of dyskinesia, which was analyzed by the Kaplan-Meier survival rate.
Results
A total of 80 patients were enrolled: Group A-1 (n = 27), Group A-2 (n = 27), and Group B (n = 26). Twenty-four patients were excluded from the analysis due to the following: withdrawal of amantadine or dopamine agonist (n = 9), alternative diagnosis (n = 2), withdrawal of consent (n = 1), and breach in the protocol (n = 12). After exclusion, 5 of the 56 (8.93%) patients developed dyskinesia. Patients in Group A-1 and A-2 tended to develop dyskinesia less often than those in Group B (cumulative survival rates of 0.933, 0.929, and 0.700 for A-1, A-2, and B, respectively; p = 0.453).
Conclusion
Amantadine as an initial treatment may decrease the incidence of dyskinesia in patients with drug-naïve PD.

Citations

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Effect of glycine transporter 1 inhibition with bitopertin on parkinsonism and L-DOPA induced dyskinesia in the 6-OHDA-lesioned rat
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European Journal of Pharmacology.2022; 929: 175090. CrossRef
Amantadine in the treatment of Parkinson’s disease. New opportunities in the context of COVID-19
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Zhurnal nevrologii i psikhiatrii im. S.S. Korsakova.2021; 121(4): 101. CrossRef
Current Knowledge on the Background, Pathophysiology and Treatment of Levodopa-Induced Dyskinesia—Literature Review
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Suraj Sulhan, Kristopher A. Lyon, Lee A. Shapiro, Jason H. Huang
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Sohaila AlShimemeri, Susan H Fox, Naomi P Visanji
Expert Opinion on Emerging Drugs.2020; 25(2): 131. CrossRef
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Michelle Ann C. Sy, Hubert H. Fernandez
Neurotherapeutics.2020; 17(4): 1331. CrossRef
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Jing Liu, Fei Xu, Zhiyan Nie, Lei Shao
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Viewpoint: Developing drugs for levodopa-induced dyskinesia in PD: Lessons learnt, what does the future hold?
Susan H. Fox, Jonathan M. Brotchie
European Journal of Neuroscience.2019; 49(3): 399. CrossRef
Polypharmacy in Parkinson’s disease: risks and benefits with little evidence
I. Csoti, H. Herbst, P. Urban, D. Woitalla, U. Wüllner
Journal of Neural Transmission.2019; 126(7): 871. CrossRef
Activation of mGlu2/3 receptors, a novel therapeutic approach to alleviate dyskinesia and psychosis in experimental parkinsonism
Imane Frouni, Adjia Hamadjida, Cynthia Kwan, Dominique Bédard, Vaidehi Nafade, Fleur Gaudette, Stephen G. Nuara, Jim C. Gourdon, Francis Beaudry, Philippe Huot
Neuropharmacology.2019; 158: 107725. CrossRef
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Valentina Leta, Peter Jenner, K. Ray Chaudhuri, Angelo Antonini
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Stiff-Person Syndrome: Case Series: Yu Jin Jung, Han G. Jeong, Ryul Kim, Han-Joon Kim, Beom S. Jeon; J Mov Disord. 2014;7(1):19-21. Published online April 30, 2014; DOI: https://doi.org/10.14802/jmd.14004

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1,364 Download
4 Citations

Abstract PDF

Stiff-person syndrome (SPS) is a rare disorder, characterized by progressive fluctuating muscular rigidity and spasms. Glutamic acid decarboxylase (GAD) antibody is primarily involved in the pathogenesis of SPS and SPS is strongly associated with other autoimmune disease. Here we report three cases of patients with classical SPS finally confirmed by high serum level of GAD antibodies. All of our patients respond favorably to gamma amino butyric acid-enhancing drugs and immunotherapies.

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Neuroimmunology Reports.2022; 2: 100116. CrossRef
Efficacy and safety of therapeutic plasma exchange in stiff person syndrome
Piotr F. Czempik, Justyna Gawryluk, Agnieszka Wiórek, Ewa Krzystanek, Łukasz J. Krzych
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Neuronal Antibodies and Associated Syndromes
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Autoimmune Diseases.2019; 2019: 1. CrossRef

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