MDS Abstracts

Abstracts from the International Congress of Parkinson’s and Movement Disorders.

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  • 2026 International Congress

    DDX17 Drives Astrocytic Mitochondrial Metabolic Reprogramming and Contributes to Parkinson’s Disease Progression

    XIA. Dong, GAN. Wu, XIN. Yang, QIN. Li, FUR. Jin, RUI. Li, HON. Li, RUI. Xu (kunming, China)

    Objective: To investigate whether DDX17, an RNA helicase identified as a Parkinson's disease (PD) risk gene, regulates astrocytic mitochondrial metabolism and contributes to dopaminergic neuron…
  • 2026 International Congress

    Gut Barrier Failure In Parkinson Disease: Reduced Colonic Resilience In Moderate Disease And Spontaneous Pan-Intestinal Leak In Severe Disease

    M. Abdel-Mohsen, M. Shaikh, L. Zhang, P. Engen, C. Neumann, M. Villanueva, D. Sanchez-Bass, L. Dibenedetto, S. Luo, B. Killinger, C. Soto, S. Green, L. Lagorio, R. Voigt, A. Sharma, C. Goetz, A. Keshavarzian (Chicago, USA)

    Objective: To determine whether intestinal barrier dysfunction in Parkinson disease (PD) is stage-specific by assessing baseline epithelial permeability and resilience to inflammatory and microbial stressors.…
  • 2026 International Congress

    Beyond Movement Amplitude: Interaction‑ and Asymmetry‑Aware Facial Blendshape Analysis in Parkinsonian Hypomimia

    B. Koyak, T. Menzel, A. Spottke, J. Faber, M. Reuter, U. Wüllner, M. Botsch, A. Aziz (Bonn, Germany)

    Objective: To quantify parkinsonian hypomimia beyond movement amplitude using a smartphone-based facial blendshape system incorporating interaction and asymmetry features. Background: Hypomimia is an early motor…
  • 2026 International Congress

    Association Between Sleep Disturbance and Fatigue in Patients with Parkinson’s Disease

    K. Kurihara, N. Takahashi, K. Inoue, J. Tsugawa, Y. Baba (Fukuoka, Japan)

    Objective: This study aimed to comprehensively investigate the associations between sleep disturbance and several non-motor symptoms, with a particular focus on the relationship with fatigue.…
  • 2026 International Congress

    Monocyte and T-cell Immunological Profiles of Asian LRRK2 Variants G2385R And R1628P in Parkinson’s Disease: Associations with Clinical Measures

    NJ. Zulkefli, NJ. Zulkefli, NS. Zulhaimi, HX. Ding, TS. Toh, JW. Hor, YW. Tay, AN. Khairul Anuar, JL. Lim, JW. Goh, RY. Ong, QH. Yong, A. Ahmad Annuar, LC. Lit, SY. Lim, R. Rajasuriar, AH. Tan (Kuala Lumpur, Malaysia)

    Objective: To evaluate the clinical correlates of monocyte and T-cell immunoprofiles in Parkinson’s disease (PD) with and without Asian LRRK2 variants. Background: Immune dysregulation has…
  • 2026 International Congress

    Genetic Variation in KCNJ6 Gene Increases Risk of Impulse Disorders in Parkinson’s Disease: A Two-Cohort Study

    S. García-Díaz, J. Martín-Rodríguez, L. Muñoz-Delgado, R. Díaz-Belloso, S. Jesús, MT. Periñán, M. Martín-Bórnez, AM. Castellano-Guerrero, E. Ojeda-Lepe, D. Macías-García, A. Adarmes-Gómez, D. Buiza-Rueda, M. Bonilla-Toribio, E. Iglesias-Camacho, M. San-Eufrasio, C. Pérez-Calvo, A. Luque-Ambrosiani, F. Carrillo-García, P. Gómez-Garre, P. Mir (Sevilla, Spain)

    Objective: To investigate the association between polymorphisms related to reward and punishment processing, and the development of impulse control disorders (ICDs) and compulsive behaviors (CBs)…
  • 2026 International Congress

    Behavioral Phenotype of a Mouse Model of Mixed Movement Disorders Linked to ADCY5

    J. Baik, E. Conabady, M. Doulazmi, R. Yuan, C. Dubacq, E. Roze (Paris, France)

    Objective: To define the motor and non-motor phenotypic features of a novel Adcy5R419W mouse line [1] and validate it as an integrated model of human mixed movement disorders…
  • 2026 International Congress

    Predictors of Shunt Placement for Patients with Normal Pressure Hydrocephalus following a Multidisciplinary Evaluation

    G. Yu, D. Terry, L. Acosta (Philadelphia, USA)

    Objective: Measures of cognition and gait pre- and post-lumbar puncture (LP) may predict which patients with concern for normal pressure hydrocephalus (NPH) are better candidates…
  • 2026 International Congress

    Evaluation of Semantic Space Search Metrics in Phonemic Fluency: Comparison among Basal Ganglia Disorders and Healthy Controls

    S. Kobayashi, Y. Hagiwara, M. Fujimaki, N. Tsutsui, S. Kawaguchi, K. Hasegawa (Tokyo, Japan)

    Objective: Phonemic verbal fluency reflects executive function and involves both within-category lexical retrieval (cluster size) and switching between categories. We compared semantic search behavior in…
  • 2026 International Congress

    Seed Amplification Assay Is More Sensitive To Detecting α-Synuclein In Gut Biopsies Than Immunohistochemistry

    B. Killinger, J. Duvernay, S. Choi, S. Pritzkow, M. Pinho, P. Engen, M. Shaikh, L. Zhang, C. Neumann, M. Villanueva, D. Sanchez-Bass, L. Dibenedetto, M. Abdel-Mohsen, S. Green, L. Lagorio, S. Luo, R. Voigt, A. Sharma, C. Goetz, A. Keshavarzian (Chicago, USA)

    Objective: Assess seed amplification assay (SAA) and immunohistochemistry (IHC) in peripheral gut mucosal biospecimens as PD diagnostics. Background: SAA detects misfolded alpha-synuclein (α-syn) aggregates across…
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