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Related Concept Videos

Alterations in Muscle Tone ll01:12

Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...
Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin

Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
Alterations in Muscle Tone lll01:11

Alterations in Muscle Tone lll

Rigidity and myotonia are distinct abnormalities of muscle tone that affect resistance and relaxation during movement. Although both involve altered muscle contraction, they arise from different neurological and muscular mechanisms.CharacteristicsRigidity is characterized by uniform resistance to passive movement across the entire range, independent of speed, affecting flexors and extensors equally. It may appear as lead-pipe rigidity (smooth, constant resistance) or cogwheel rigidity...

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Related Experiment Video

Updated: May 29, 2026

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia
10:41

Implantation of Osmotic Pumps and Induction of Stress to Establish a Symptomatic, Pharmacological Mouse Model for DYT/PARK-ATP1A3 Dystonia

Published on: September 12, 2020

Experimental models of dystonia.

Annalisa Tassone1, Giuseppe Sciamanna, Paola Bonsi

  • 1Department of Neuroscience, University Tor Vergata, Rome, Italy.

International Review of Neurobiology
|September 13, 2011
PubMed
Summary

Animal models are crucial for understanding dystonia, a movement disorder. While mouse models show subtle abnormalities, they aid in exploring pathophysiology and potential treatments for dystonia.

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Area of Science:

  • Neuroscience
  • Genetics
  • Movement Disorders

Background:

  • Dystonia is a disabling movement disorder causing involuntary muscle contractions and abnormal postures.
  • Classified as primary (genetic/sporadic) or secondary (brain lesions), dystonia research benefits from genetic discoveries.
  • Translating genetic findings into patient treatments requires understanding gene defect consequences on motor behavior and physiology.

Purpose of the Study:

  • To provide a comprehensive overview of commonly utilized animal models for dystonia research.
  • To discuss the results obtained from these models in studying dystonia.
  • To assess the utility of animal models in exploring dystonia pathophysiology and treatments.

Main Methods:

  • Review and description of various animal models used in dystonia research.
  • Inclusion of models across different species, including invertebrates and mammals (mice).
  • Analysis of genetic and spontaneous mutant models, noting their phenotypes and limitations.

Main Results:

  • Progress in identifying dystonia genes has led to the development of diverse animal models.
  • Mouse models often exhibit subtle motor and neurochemical alterations rather than overt dystonia.
  • Spontaneous mutant models may show clear phenotypes, but mutation origins can be unknown.

Conclusions:

  • Animal models are essential for advancing dystonia research, despite limitations in fully replicating human clinical features.
  • The value of an animal model lies in its ability to explore pathophysiology and test potential treatments.
  • Continued development and characterization of animal models are vital for understanding and treating dystonia.