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Sun J. Chung 2 Articles
New Perspective on Parkinsonism in Frontotemporal Lobar Degeneration
Hee Kyung Park, Sun J. Chung
J Mov Disord. 2013;6(1):1-8.
DOI: https://doi.org/10.14802/jmd.13001
  • 24,069 View
  • 232 Download
  • 25 Crossref
AbstractAbstract PDF

Frontotemporal dementia (FTD) is the second most common type of presenile dementia. Three clinical prototypes have been defined; behavioral variant FTD, semantic dementia, and progressive nonfluent aphasia. Progressive supranuclear palsy, corticobasal degeneration, and motor neuron disease may possess clinical and pathological characteristics that overlap with FTD, and it is possible that they may all belong to the same clinicopathological spectrum. Frontotemporal lobar degeneration (FTLD) is a clinicopathological syndrome that encompasses a heterogenous group of neurodegenerative disorders. Owing to the advancement in the field of molecular genetics, diagnostic imaging, and pathology, FTLD has been the focus of great interest. Nevertheless, parkinsonism in FTLD has received relatively less attention. Parkinsonism is found in approximately 20–30% of patients in FTLD. Furthermore, parkinsonism can be seen in all FTLD subtypes, and some patients with familial and sporadic FTLD can present with prominent parkinsonism. Therefore, there is a need to understand parkinsonism in FTLD in order to obtain a better understanding of the disease. With regard to the clinical characteristics, the akinetic rigid type of parkinsonism has predominantly been described. Parkinsonism is frequently observed in familial FTD, more specifically, in FTD with parkinsonism linked to chromosome 17q (FTDP-17). The genes associated with parkinsonism are microtubule associated protein tau (MAPT), progranulin (GRN or PGRN), and chromosome 9 open reading frame 72 (C9ORF72) repeat expansion. The neural substrate of parkinsonism remains to be unveiled. Dopamine transporter (DAT) imaging revealed decreased uptake of DAT, and imaging findings indicated atrophic changes of the basal ganglia. Parkinsonism can be an important feature in FTLD and, therefore, increased attention is needed on the subject.

Citations

Citations to this article as recorded by  
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  • Movement disorders are linked to TDP-43 burden in the substantia nigra of FTLD-TDP brain donors
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  • Demencias degenerativas: ¿un dilema de síndromes o de enfermedades?
    A. Robles Bayón
    Neurología.2022; 37(6): 480.     CrossRef
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    A. Robles Bayón
    Neurología (English Edition).2022; 37(6): 480.     CrossRef
  • Deficient neurotransmitter systems and synaptic function in frontotemporal lobar degeneration—Insights into disease mechanisms and current therapeutic approaches
    Nadine Huber, Sonja Korhonen, Dorit Hoffmann, Stina Leskelä, Hannah Rostalski, Anne M. Remes, Paavo Honkakoski, Eino Solje, Annakaisa Haapasalo
    Molecular Psychiatry.2022; 27(3): 1300.     CrossRef
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  • Dopamine Transporter Imaging for Frontotemporal Lobar Degeneration With Motor Neuron Disease
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    Frontiers in Neuroscience.2022;[Epub]     CrossRef
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  • Multi-Modal Synergistic 99mTc-TRODAT-1 SPECT and MRI for Evaluation of the Efficacy of Hyperbaric Oxygen Therapy in CO-Induced Delayed Parkinsonian and Non-Parkinsonian Syndromes
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    NeuroMolecular Medicine.2021; 23(1): 1.     CrossRef
  • Different miRNA Profiles in Plasma Derived Small and Large Extracellular Vesicles from Patients with Neurodegenerative Diseases
    Daisy Sproviero, Stella Gagliardi, Susanna Zucca, Maddalena Arigoni, Marta Giannini, Maria Garofalo, Martina Olivero, Michela Dell’Orco, Orietta Pansarasa, Stefano Bernuzzi, Micol Avenali, Matteo Cotta Ramusino, Luca Diamanti, Brigida Minafra, Giulia Peri
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    Carmen Gasca-Salas, Mario Masellis, Edwin Khoo, Binit B. Shah, David Fisman, Anthony E. Lang, Galit Kleiner-Fisman, Patrick Lewis
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    Ione O. C. Woollacott, Jonathan D. Rohrer
    Journal of Neurochemistry.2016; 138(S1): 6.     CrossRef
  • Genetics of Progressive Supranuclear Palsy
    Sun Young Im, Young Eun Kim, Yun Joong Kim
    Journal of Movement Disorders.2015; 8(3): 122.     CrossRef
Lateralized Effects of Unilateral Thalamotomy and Thalamic Stimulation in Patients with Essential Tremor
Mi J. Kim, Sang R. Jeon, Sung R. Kim, Myoung C. Lee, Sun J. Chung
J Mov Disord. 2011;4(2):64-67.
DOI: https://doi.org/10.14802/jmd.11013
  • 16,050 View
  • 73 Download
  • 7 Crossref
AbstractAbstract PDF
Background and Purpose

Stereotactic thalamotomy has been an effective surgical procedure in the treatment of medically refractory essential tremor (ET), however, little is known about the bilateral effects of unilateral ventralis intermedius (Vim) thalamotomy and Vim deep brain stimulation (DBS). We studied the lateralized effects of unilateral Vim thalamotomy and Vim DBS in ET patients.

Methods

Vim thalamotomy was performed in 6 patients and Vim DBS in 6. Patients were evaluated preoperatively and at 3 and 6 months postoperatively using the Clinical Rating Scale for Tremor (CRST).

Results

The contralateral Part A (tremor localization/severity rating) and Part B (specific motor tasks/function rating) subscores, and axial subscores of CRST significantly improved after unilateral Vim thalamotomy or Vim DBS. On the side ipsilateral to surgery, ET patients demonstrated no significant improvements in the Part A and Part B subscores of CRST. The Part C (functional disabilities resulting from tremor) subscores and total scores of CRST were significantly improved after surgery.

Conclusions

Vim thalamotomy and DBS may be equally effective for the management of contralateral and axial tremor in ET patients, but both interventions may not improve tremor on the side ipsilateral to surgery.

Citations

Citations to this article as recorded by  
  • Displaced center of pressure on the treated side in individuals with essential tremor after radiofrequency ablation: a longitudinal case–control study
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    Frontiers in Neurology.2023;[Epub]     CrossRef
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JMD : Journal of Movement Disorders