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Case Reports
Loss-of-Function Variant in the SMPD1 Gene in Progressive Supranuclear Palsy-Richardson Syndrome Patients of Chinese Ancestry
Shen-Yang Lim, Ai Huey Tan, Jia Nee Foo, Yi Jayne Tan, Elaine GY Chew, Azlina Ahmad Annuar, Alfand Marl Dy Closas, Azalea Pajo, Jia Lun Lim, Yi Wen Tay, Anis Nadhirah, Jia Wei Hor, Tzi Shin Toh, Lei Cheng Lit, Jannah Zulkefli, Su Juen Ngim, Weng Khong Lim, Huw R. Morris, Eng-King Tan, Adeline SL Ng
J Mov Disord. 2024;17(2):213-217.   Published online January 31, 2024
DOI: https://doi.org/10.14802/jmd.24009
  • 2,103 View
  • 67 Download
  • 1 Crossref
AbstractAbstract PDFSupplementary Material
Lysosomal dysfunction plays an important role in neurodegenerative diseases, including Parkinson’s disease (PD) and possibly Parkinson-plus syndromes such as progressive supranuclear palsy (PSP). This role is exemplified by the involvement of variants in the GBA1 gene, which results in a deficiency of the lysosomal enzyme glucocerebrosidase and is the most frequently identified genetic factor underlying PD worldwide. Pathogenic variants in the SMPD1 gene are a recessive cause of Niemann–Pick disease types A and B. Here, we provide the first report on an association between a loss-of-function variant in the SMPD1 gene present in a heterozygous state (p.Pro332Arg/p.P332R, which is known to result in reduced lysosomal acid sphingomyelinase activity), with PSP-Richardson syndrome in three unrelated patients of Chinese ancestry.

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Citations to this article as recorded by  
  • Parkinson’s Disease is Predominantly a Genetic Disease
    Shen-Yang Lim, Christine Klein
    Journal of Parkinson's Disease.2024; 14(3): 467.     CrossRef
A KMT2B Frameshift Variant Causing Focal Dystonia Restricted to the Oromandibular Region After Long-Term Follow-up
Alfand Marl F. Dy Closas, Katja Lohmann, Ai Huey Tan, Norlinah Mohamed Ibrahim, Jia Lun Lim, Yi Wen Tay, Kalai Arasu Muthusamy, Azlina Binti Ahmad-Annuar, Christine Klein, Shen-Yang Lim
J Mov Disord. 2023;16(1):91-94.   Published online December 20, 2022
DOI: https://doi.org/10.14802/jmd.22109
  • 1,665 View
  • 96 Download
  • 2 Web of Science
  • 2 Crossref
AbstractAbstract PDFSupplementary Material
KMT2B-linked dystonia (DYT-KMT2B) is a childhood-onset dystonia syndrome typically beginning in the lower limbs and progressing caudocranially to affect the upper limbs with eventual prominent craniocervical involvement. Despite its recent recognition, it now appears to be one of the more common monogenic causes of dystonia syndromes. Here, we present an atypical case of DYT-KMT2B with oromandibular dystonia as the presenting feature, which remained restricted to this region three decades after symptom onset. This appears to be the first reported case of DYT-KMT2B from Southeast Asia and provides further supporting evidence for the pathogenic impact of the KMT2B c.6210_6213delTGAG variant.

Citations

Citations to this article as recorded by  
  • Genetic Update and Treatment for Dystonia
    Jan Koptielow, Emilia Szyłak, Olga Szewczyk-Roszczenko, Piotr Roszczenko, Jan Kochanowicz, Alina Kułakowska, Monika Chorąży
    International Journal of Molecular Sciences.2024; 25(7): 3571.     CrossRef
  • KMT2B-Related Dystonia in Indian Patients With Literature Review and Emphasis on Asian Cohort
    Debjyoti Dhar, Vikram V Holla, Riyanka Kumari, Neeharika Sriram, Jitender Saini, Ravi Yadav, Akhilesh Pandey, Nitish Kamble, Babylakshmi Muthusamy, Pramod Kumar Pal
    Journal of Movement Disorders.2023; 16(3): 285.     CrossRef
Letter to the editor
Alternating Hemiplegia of Childhood in a Person of Malay Ethnicity with Diffusion Tensor Imaging Abnormalities
Ai Huey Tan, Tien Lee Ong, Norlisah Ramli, Li Kuo Tan, Jia Lun Lim, Mohamad Addin Azhan, Azlina Ahmad-Annuar, Khairul Azmi Ibrahim, Zariah Abdul-Aziz, Laurie J. Ozelius, Allison Brashear, Shen-Yang Lim
J Mov Disord. 2019;12(2):132-134.   Published online May 30, 2019
DOI: https://doi.org/10.14802/jmd.18063
  • 5,070 View
  • 57 Download
  • 1 Web of Science
  • 1 Crossref
PDFSupplementary Material

Citations

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  • White matter and cerebellar involvement in alternating hemiplegia of childhood
    Mariasavina Severino, Livia Pisciotta, Domenico Tortora, Benedetta Toselli, Michela Stagnaro, Ramona Cordani, Giovanni Morana, Anna Zicca, Svetlana Kotzeva, Clelia Zanaboni, Giovanni Montobbio, Andrea Rossi, Elisa De Grandis
    Journal of Neurology.2020; 267(5): 1300.     CrossRef
Case Reports
Purposeless Groaning in Parkinson’s Disease
Shen-Yang Lim, Ai Huey Tan, Jia Lun Lim, Azlina Ahmad-Annuar
J Mov Disord. 2018;11(2):87-88.   Published online May 30, 2018
DOI: https://doi.org/10.14802/jmd.18004
  • 8,259 View
  • 110 Download
  • 6 Web of Science
  • 5 Crossref
AbstractAbstract PDFSupplementary Material
Purpose
less groaning has been reported in advanced progressive supranuclear palsy. We present a case of purposeless groaning occurring as a primary complaint in a patient with advanced Parkinson’s disease. Purposeless groaning is thought to be a manifestation of disinhibition and perseveration due to frontal-subcortical dysfunction. Proper recognition of this phenomenon will help clinicians to avoid unnecessary investigations and treatment (e.g., prescription of opioid medications).

Citations

Citations to this article as recorded by  
  • OFF-Period Purposeless Groaning in Parkinsonism
    Vikash Agarwal, Jeyalakshmi Rajan, Norlisah Ramli, Cecilia Santiago, DushyanthB Jasti, AiHuey Tan, Shen-Yang Lim
    Neurology India.2022; 70(3): 1232.     CrossRef
  • Involuntary moaning in a Hispanic family with eight affected members
    Maria Gisatulin, Malco Rossi, Claudia Perandones, Christine Klein, Katja Lohmann, Marcelo Merello
    Parkinsonism & Related Disorders.2021; 89: 206.     CrossRef
  • Involuntary Groaning Induced by Levodopa Therapy in a Patient With Progressive Supranuclear Palsy
    Jung E. Park
    JAMA Neurology.2020; 77(12): 1569.     CrossRef
  • Clinical Phenotype of LRRK2 R1441C in 2 Chinese Sisters
    Shen-Yang Lim, Jia Lun Lim, Azlina Ahmad-Annuar, Katja Lohmann, Ai Huey Tan, Kai Bin Lim, Yi Wen Tay, Yee Lee Shing, Kalai Arasu Muthusamy, Peter Bauer, Arndt Rolfs, Christine  Klein
    Neurodegenerative Diseases.2020; 20(1): 39.     CrossRef
  • The spectrum of involuntary vocalizations in humans: A video atlas
    Tina Mainka, Bettina Balint, Felix Gövert, Lille Kurvits, Christoph van Riesen, Andrea A. Kühn, Marina A.J. Tijssen, Andrew J. Lees, Kirsten Müller‐Vahl, Kailash P. Bhatia, Christos Ganos
    Movement Disorders.2019; 34(12): 1774.     CrossRef
A Patient with Beta-Propeller Protein-Associated Neurodegeneration: Treatment with Iron Chelation Therapy
Shen-Yang Lim, Ai Huey Tan, Azlina Ahmad-Annuar, Susanne A. Schneider, Ping Chong Bee, Jia Lun Lim, Norlisah Ramli, Mohamad Imran Idris
J Mov Disord. 2018;11(2):89-92.   Published online May 30, 2018
DOI: https://doi.org/10.14802/jmd.17082
  • 26,299 View
  • 163 Download
  • 12 Web of Science
  • 13 Crossref
AbstractAbstract PDFSupplementary Material
We present a case of beta-propeller protein-associated neurodegeneration, a form of neurodegeneration with brain iron accumulation. The patient harbored a novel mutation in the WDR45 gene. A detailed video and description of her clinical condition are provided. Her movement disorder phenomenology was characterized primarily by limb stereotypies and gait dyspraxia. The patient’s disability was advanced by the time iron-chelating therapy with deferiprone was initiated, and no clinical response in terms of cognitive function, behavior, speech, or movements were observed after one year of treatment.

Citations

Citations to this article as recorded by  
  • Lipid droplet accumulation in Wdr45-deficient cells caused by impairment of chaperone-mediated autophagic degradation of Fasn
    Qiuhong Xiong, Huimin Sun, Yanlin Wang, Qian Xu, Yu Zhang, Mei Xu, Zhonghua Zhao, Ping Li, Changxin Wu
    Lipids in Health and Disease.2024;[Epub]     CrossRef
  • L-serine restored lysosomal failure in cells derived from patients with BPAN reducing iron accumulation with eliminating lipofuscin
    Hye Eun Lee, Minkyo Jung, Kiju Choi, Jae Hyuck Jang, Su-Kyeong Hwang, Sehyun Chae, Jae-Hyeok Lee, Ji Young Mun
    Free Radical Biology and Medicine.2024; 221: 273.     CrossRef
  • Quantitative retrospective natural history modeling of WDR45-related developmental and epileptic encephalopathy – a systematic cross-sectional analysis of 160 published cases
    Afshin Saffari, Julian Schröter, Sven F. Garbade, Julian E. Alecu, Darius Ebrahimi-Fakhari, Georg F. Hoffmann, Stefan Kölker, Markus Ries, Steffen Syrbe
    Autophagy.2022; 18(7): 1715.     CrossRef
  • Cerebral Iron Deposition in Neurodegeneration
    Petr Dusek, Tim Hofer, Jan Alexander, Per M. Roos, Jan O. Aaseth
    Biomolecules.2022; 12(5): 714.     CrossRef
  • Interactions of dopamine, iron, and alpha-synuclein linked to dopaminergic neuron vulnerability in Parkinson's disease and Neurodegeneration with Brain Iron Accumulation disorders
    Rachel M. Wise, Annika Wagener, Urban M. Fietzek, Thomas Klopstock, Eugene V. Mosharov, Fabio A. Zucca, David Sulzer, Luigi Zecca, Lena F. Burbulla
    Neurobiology of Disease.2022; 175: 105920.     CrossRef
  • WDR45 variants cause ferrous iron loss due to impaired ferritinophagy associated with nuclear receptor coactivator 4 and WD repeat domain phosphoinositide interacting protein 4 reduction
    Kiwako Tsukida, Shin-ichi Muramatsu, Hitoshi Osaka, Takanori Yamagata, Kazuhiro Muramatsu
    Brain Communications.2022;[Epub]     CrossRef
  • Iron Chelation in Movement Disorders: Logical or Ironical
    Dinkar Kulshreshtha, Jacky Ganguly, Mandar Jog
    Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques.2021; : 1.     CrossRef
  • Emerging Disease-Modifying Therapies in Neurodegeneration With Brain Iron Accumulation (NBIA) Disorders
    Vassilena Iankova, Ivan Karin, Thomas Klopstock, Susanne A. Schneider
    Frontiers in Neurology.2021;[Epub]     CrossRef
  • Consensus clinical management guideline for beta‐propeller protein‐associated neurodegeneration
    Jenny L Wilson, Allison Gregory, Manju A Kurian, Ittai Bushlin, Fanny Mochel, Lisa Emrick, Laura Adang, Penelope Hogarth, Susan J Hayflick
    Developmental Medicine & Child Neurology.2021; 63(12): 1402.     CrossRef
  • WDR45, one gene associated with multiple neurodevelopmental disorders
    Yingying Cong, Vincent So, Marina A. J. Tijssen, Dineke S. Verbeek, Fulvio Reggiori, Mario Mauthe
    Autophagy.2021; 17(12): 3908.     CrossRef
  • Towards Precision Therapies for Inherited Disorders of Neurodegeneration with Brain Iron Accumulation
    Robert V.V. Spaull, Audrey K.S. Soo, Penelope Hogarth, Susan J. Hayflick, Manju A. Kurian
    Tremor and Other Hyperkinetic Movements.2021;[Epub]     CrossRef
  • The roles of iron and HFE genotype in neurological diseases
    Yunsung Kim, James R. Connor
    Molecular Aspects of Medicine.2020; 75: 100867.     CrossRef
  • The Contribution of Iron to Protein Aggregation Disorders in the Central Nervous System
    Karina Joppe, Anna-Elisa Roser, Fabian Maass, Paul Lingor
    Frontiers in Neuroscience.2019;[Epub]     CrossRef

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