
Simple Methods for Permanent or Transient Denervation in Mouse Sciatic Nerve Injury Models
Author(s) -
Alexis Osseni,
Jean Thomas,
Alireza Ghasemizadeh,
Laurent Schaeffer,
Vincent Gache
Publication year - 2022
Publication title -
bio-protocol
Language(s) - English
Resource type - Journals
ISSN - 2331-8325
DOI - 10.21769/bioprotoc.4430
Subject(s) - denervation , reinnervation , sciatic nerve , neuromuscular junction , neuroscience , axon , nerve injury , anatomy , in vivo , medicine , biology , microbiology and biotechnology
Our ability to move and breathe requires an efficient communication between nerve and muscle that mainly takes place at the neuromuscular junctions (NMJs), a highly specialized synapse that links the axon of a motor neuron to a muscle fiber. When NMJs or axons are disrupted, the control of muscle fiber contraction is lost and muscle are paralyzed. Understanding the adaptation of the neuromuscular system to permanent or transient denervation is a challenge to understand the pathophysiology of many neuromuscular diseases. There is still a lack of in vitro models that fully recapitulate the in vivo situation, and in vivo denervation, carried out by transiently or permanently severing the nerve afferent to a muscle, remains a method of choice to evaluate reinnervation and/or the consequences of the loss of innervation. We describe here a simple surgical intervention performed at the hip zone to expose the sciatic nerve in order to obtain either permanent denervation (nerve-cut) or transient and reversible denervation (nerve-crush). These two methods provide a convenient in vivo model to study adaptation to denervation. Graphical abstract.