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Related Experiment Video

Updated: Dec 11, 2025

In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration

In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration

Published on: June 15, 2018

Hereditary motor neuropathies.

Maike F Dohrn^1,2, Mario Saporta^1,3

¹Dr. John T. Macdonald Foundation, Department of Human Genetics and John P. Hussman Institute for Human Genomics, University of Miami, Miller School of Medicine, Miami, Florida, USA.

Current Opinion in Neurology

|August 16, 2020

Summary

New genetic discoveries are improving our understanding of hereditary motor neuropathies (HMN), rare diseases causing muscle weakness. Functional models are paving the way for targeted treatments.

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Published on: September 25, 2015

Area of Science:

Genetics
Neuroscience
Rare Diseases

Background:

Hereditary motor neuropathies (HMN) are rare, disabling neurological disorders characterized by progressive muscle weakness and atrophy.
A significant portion of HMN cases lack a genetic explanation, hindering the development of effective treatments.
Understanding the underlying disease mechanisms is crucial for developing future symptomatic and disease-modifying therapies.

Purpose of the Study:

To review recent advancements in understanding the genetic basis and pathophysiology of HMN.
To highlight the impact of novel gene discoveries and functional models on HMN research.
To discuss the implications for future therapeutic strategies in HMN.

Main Methods:

Whole exome and genome sequencing to identify novel causative genes in HMN.
Development and utilization of functional models, including cell cultures, animal models, and induced pluripotent stem cells (iPSCs).
Analysis of recent findings in genetic sequencing and data interpretation for rare diseases.

Main Results:

Identification of several novel genes (e.g., SCO2, TDRKH, SPTAN1, CADM3, SORD) implicated in HMN pathogenesis.
Functional models have significantly advanced the pathophysiological understanding of HMN.
Preclinical development of mechanistic-based therapies, including gene silencing approaches.

Conclusions:

Recent genetic discoveries have substantially improved the understanding of HMN.
Functional models are critical for advancing HMN research and therapeutic development.
Individualized treatment strategies are emerging for rare diseases like HMN, driven by genetic insights and model systems.