Motor Neuron Isolation
Motor Neuron Isolation - Related Videos
07:57
Isolation and Culture of Oculomotor, Trochlear, and Spinal Motor Neurons from a Mouse Embryo
0 Views •
2025
The video demonstrates the isolation of oculomotor, trochlear, and spinal motor neurons from a transgenic mouse embryo. The embryo expresses motor neurons labeled with a green fluorescent protein (GFP) for easy visualization and identification. The motor neurons are surgically isolated under a fluorescence microscope and maintained in a culture medium.
17:27
Preparation of Aplysia Sensory-motor Neuronal Cell Cultures
0 Views •
Cited by 37 •
2009
Primary cultures of Aplysia sensory-motor neurons provide a model preparation for studying synapse formation and synaptic plasticity in vitro. This video demonstrates the identification and microdissection of sensory and motor neurons from Aplysia ganglia as well as the methods for establishing and maintaining sensory-motor neurons in culture.
13:37
Extracellularly Identifying Motor Neurons for a Muscle Motor Pool in Aplysia californica
0 Views •
Cited by 23 •
2013
In animals with large identified neurons (e.g. mollusks), analysis of motor pools is done using intracellular techniques1,2,3,4. Recently, we developed a technique to extracellularly stimulate and record individual neurons in Aplysia californica5. We now describe a protocol for using this technique to uniquely identify and characterize motor neurons within a motor pool.
03:31
Intramuscular Injections Along the Motor End Plates to Shuttle Tracers Directly into Rat Motor Neurons
0 Views •
2025
Source: Mohan, R., et al. Intramuscular Injections Along the Motor End Plates: A Minimally Invasive Approach to Shuttle Tracers Directly into Motor Neurons. J. Vis. Exp. (2015)This video demonstrates the targeted delivery of a fluorescent neuronal tracer into motor neurons via intramuscular injection at the motor end plates (MEPs). It outlines the steps involved in preparing the rat, injecting the tracer, and assessing labeled motor neurons for neurotherapeutic potential.
10:57
Intramuscular Injections Along the Motor End Plates: A Minimally Invasive Approach to Shuttle Tracers Directly into Motor Neurons
0 Views •
Cited by 20 •
2015
The efficacy of intramuscular uptake and retrograde transport of molecules to corresponding motor neurons depends on the location of the injection sites with respect to the motor end plates (MEPs). Here, we describe how to locate MEPs on skeletal muscles to optimise retrograde transport of tracers into motor neurons.
FAQs
Dissection determines which nervous tissue and mixed cell populations enter the preparation, directly shaping the cells available for study. Careful handling helps preserve motor neuron structure before later processing and reduces unwanted variation between samples. This is especially important when experiments measure neuronal survival, morphology, or responses to genetic changes and toxins.
Enzymatic and mechanical dissociation separate cells from nervous tissue or one another through different forms of processing. Their use must support cell separation while maintaining the structural and functional properties needed for culture. The resulting preparation can then be evaluated for motor neuron survival, axonal growth, or other responses under controlled laboratory conditions.
Motor neuron preparations can be enriched according to cell size, density, adhesion behavior, or neuron-specific markers. Each principle selects cells through a different measurable property, helping reduce the influence of unrelated cell types in a mixed population. The chosen basis affects the composition of the preparation and therefore the interpretation of structural, survival, or functional measurements.
After separation, appropriate culture conditions help isolated cells remain viable long enough for analysis. Maintaining survival is essential because damaged or poorly preserved cells may distort measurements of structure, axonal growth, and function. Consistent conditions also make comparisons more meaningful when researchers examine effects caused by genetic changes, toxins, or candidate treatments.
These preparations allow direct examination of motor neuron structure, survival, and function in a controlled setting. Researchers can study axonal growth and neuromuscular signaling while limiting the complexity of intact nervous tissue. Such measurements help reveal how cells respond to experimental genetic changes, toxic exposures, or candidate treatments.
Isolated motor neurons provide cellular models for studying neurodevelopment, degeneration, and disorders such as amyotrophic lateral sclerosis. By exposing the cells to defined genetic changes, toxins, or candidate treatments, investigators can compare cellular responses under controlled conditions. This approach connects changes in individual neurons with broader questions about disease mechanisms and therapeutic evaluation.