a technique for performing electrical impedance myography in the mouse hind limb data in normal and als sod1 g93a animals在鼠标技术进行电阻抗myography后肢数据在正常和als sod1 g93a动物.pdfVIP

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a technique for performing electrical impedance myography in the mouse hind limb data in normal and als sod1 g93a animals在鼠标技术进行电阻抗myography后肢数据在正常和als sod1 g93a动物.pdf

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a technique for performing electrical impedance myography in the mouse hind limb data in normal and als sod1 g93a animals在鼠标技术进行电阻抗myography后肢数据在正常和als sod1 g93a动物

A Technique for Performing Electrical Impedance Myography in the Mouse Hind Limb: Data in Normal and ALS SOD1 G93A Animals 1 2 1 1 1 Jia Li , Wayne L. Staats , Andrew Spieker , Minhee Sung , Seward B. Rutkove * 1The Department of Neurology, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, Massachusetts, United States of America, 2 The Department of Mechanical Engineering, Massachusetts Institute of Technology, Boston, Massachusetts, United States of America Abstract Objective: To test a method for performing electrical impedance myography (EIM) in the mouse hind limb for the assessment of disease status in neuromuscular disease models. Methods: An impedance measuring device consisting of a frame with electrodes embedded within an acrylic head was developed. The head was rotatable such that data longitudinal and transverse to the major muscle fiber direction could be obtained. EIM measurements were made with this device on 16 healthy mice and 14 amyotrophic lateral sclerosis (ALS) animals. Repeatability was assessed in both groups. Results: The technique was easy to perform and provided good repeatability in both healthy and ALS animals, with intra- session repeatability (mean 6 SEM) of 5% 61% and 12% 62%, respectively. Significant differences between healthy and ALS animals were also identified (e.g., longitudinal mean 50 kHz phase was 18 60.6u for the healthy animals and 14 61.0u for the ALS animals, p = 0.0025). Conclusions: With this simple device, the EIM data obtained is highly repeatable and can differentiate healthy from ALS animals. Significance: EIM can now be applied to mouse models of neuromuscular disease to assess disease status and the effects of therapy. Citation: