Sagittal Plane Kinematic Gait Analysis in C57BL/6 Mice Subjected to MOG35-55 Induced Experimental Autoimmune

Maximillian Dj Fiander1, Matthew Aj Chedrawe1, Anna-Claire Lamport1

  • 1Pharmacology, Dalhousie University.

Insights

Kinematic gait analysis precisely quantifies hind limb movement deficits in a mouse model of multiple sclerosis (MS), known as experimental autoimmune encephalomyelitis (EAE). This method offers superior detail compared to traditional scoring scales for understanding motor impairments.

Area of Science:

  • Neuroscience
  • Biomechanical Engineering
  • Animal Models

Background:

  • Multiple sclerosis (MS) is a neurodegenerative disorder impacting mobility.
  • Current assessment methods for MS mouse models, like clinical scoring and rotarod tests, offer limited precision.
  • Experimental autoimmune encephalomyelitis (EAE) is a common mouse model for MS.

Purpose of the Study:

  • To apply kinematic gait analysis in the sagittal plane to identify and quantify gait deficits in EAE mice.
  • To demonstrate the utility of precise kinematic data over traditional ordinal scales for assessing motor impairment.

Main Methods:

  • Reflective markers were placed on the hind limbs of EAE mice.
  • Mice walked on a treadmill while their movements were captured by motion analysis software.
  • Kinematic gait parameters were derived from marker movement data to analyze joint function (hip, knee, ankle).

Main Results:

  • Kinematic gait analysis successfully quantified impaired hip, knee, and ankle joint movements in EAE mice.
  • This technique provides detailed, precise data on motor deficits, unlike ordinal clinical scales.
  • The study established a method for objective, quantitative assessment of gait impairment in EAE.

Conclusions:

  • Kinematic gait analysis is a powerful tool for characterizing motor deficits in EAE mouse models.
  • These techniques can enhance understanding of MS disease mechanisms and aid in developing new therapeutic strategies.
  • Precise gait analysis may be applicable to other neurodegenerative disorders affecting mobility.

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