Accumulation of Kv7.2 Channels in Nerve-End Neuromas
Author Information
Author(s): Roza Carolina, Castillejo Sol, Lopez-García Jose A
Primary Institution: Universidad de Alcalá
Hypothesis
After nerve damage, accumulation of Kv7 channels in afferent fibers may increase M-type currents which then acquired a more important role at regulating fiber excitability.
Conclusion
The study found that after axotomy, there is an accumulation of Kv7.2 channels which parallels that of Nav channels in de-myelinated areas thought to constitute ectopic loci.
Supporting Evidence
- Axotomy induced an enlargement and narrowing of the nodes of Ranvier at the proximal end of the neuroma.
- Accumulations of Kv7.2 co-localized with Nav channels in axotomized fibers.
- The study confirmed previous observations on the disruption of axonal organization following axotomy.
Takeaway
When nerves get hurt, certain channels in the nerve cells gather together, which might help control how excited those cells get and could be important for treating pain.
Methodology
The study used immunohistochemical techniques to examine Kv7.2 channel expression in afferent fibers after axotomy.
Participant Demographics
Adult outbreed CD1 mice of both sexes were used.
Statistical Information
P-Value
p<0.001
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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