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Related Concept Videos

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Parkinson’s disease is a chronic, progressive neurodegenerative disorder that primarily affects movement. It is characterized by motor symptoms such as resting tremors, muscle rigidity, bradykinesia (slowness of movement), and postural instability. Patients may notice hand tremors at rest, stiffness during movement, or a shuffling gait. In addition to motor features, non-motor symptoms include sleep disturbances, mood and behavioral changes, constipation, and cognitive impairment, all of which...
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Related Experiment Video

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Assessment of Sensorimotor Function in Mouse Models of Parkinson's Disease
10:32

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Published on: June 17, 2013

Mouse models for LRRK2 Parkinson's disease.

Qing Xu1, Sushila Shenoy, Chenjian Li

  • 1Department of Neurology and Friedman Brain Institute, Mt. Sinai School of Medicine, New York University, New York, NY 10029, USA.

Parkinsonism & Related Disorders
|December 15, 2011
PubMed
Summary

New mouse models carrying mutations in the Leucine-rich-repeat-kinase 2 (LRRK2) gene accurately mimic Parkinson's disease (PD) features. These models show motor deficits and dopaminergic neuron axonopathy, aiding LRRK2-PD research.

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Last Updated: May 26, 2026

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Published on: March 21, 2020

Area of Science:

  • Neuroscience
  • Genetics
  • Pathology

Background:

  • Parkinson's disease (PD) is a prevalent neurodegenerative disorder.
  • Mutations in Leucine-rich-repeat-kinase 2 (LRRK2) are a leading genetic cause of PD.
  • LRRK2-mediated pathogenesis requires effective animal models for study.

Purpose of the Study:

  • To develop and characterize Bacterial Artificial Chromosome (BAC) transgenic mouse models expressing mutant LRRK2.
  • To assess the recapitulation of PD-related behavioral, neurochemical, and pathological features in these models.
  • To compare LRRK2 mouse models from different research groups.

Main Methods:

  • Generation of BAC transgenic mice expressing mutant LRRK2.
  • Behavioral testing to assess motor activity and levodopa response.
  • Neurochemical analysis of dopamine transmission.
  • Pathological examination of dopaminergic neurons, including tau phosphorylation.

Main Results:

  • Transgenic mice exhibit age-dependent motor activity decline, responsive to levodopa.
  • Early axonopathy in nigrostriatal dopaminergic neurons is a key pathological finding.
  • Deficits in dopamine transmission were observed in both ex vivo and in vivo studies.
  • Hyperphosphorylated tau was present alongside axonopathy.

Conclusions:

  • LRRK2-mutant BAC transgenic mice serve as valuable models for PD research.
  • These models display key features of LRRK2-associated Parkinson's disease.
  • Further investigation into these models will provide insights into LRRK2 pathogenesis.