Neurosurgery: functional regeneration after laser axotomy.

Area of Science:

• Neuroscience
• Regenerative Medicine
• Surgical Technology

Background:

• Nerve regeneration is crucial for treating neurological diseases.
• Studying nerve regeneration is limited by the lack of precise axotomy techniques in simple organisms.
• Current research primarily uses complex models like mice and zebrafish.

Purpose of the Study:

• To develop and apply a precise axotomy technique for studying nerve regeneration in vivo.
• To utilize the roundworm *Caenorhabditis elegans* as a simple model system for nerve regeneration research.

Main Methods:

• Femtosecond laser surgery was employed for precise axotomy (axon severing).
• The technique was applied to the roundworm *Caenorhabditis elegans*.
• Functional regeneration of severed axons was assessed post-operation.

Main Results:

• Femtosecond laser surgery enabled precise and effective axotomy in *C. elegans*.
• Severed axons in *C. elegans* demonstrated functional regeneration after the laser surgery.
• This method allows in vivo study of nerve regeneration in an evolutionarily simple organism.

Conclusions:

• Femtosecond laser axotomy is a viable and precise technique for studying nerve regeneration.
• The roundworm *C. elegans* serves as an effective model for investigating fundamental mechanisms of nerve repair.
• This approach facilitates the study of nerve regeneration in its most basic biological context, paving the way for future therapeutic development.