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Challenges to nerve regeneration.

¹Department of Surgery, Division of Plastic Surgery, University of California-Irvine, Orange, California 92868, USA. gevans@uci.edu

Seminars in Surgical Oncology

|January 3, 2001

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Tissue engineering offers alternatives for peripheral nerve repair, but current nerve conduits struggle to match autogenous grafts for long-distance regeneration. Challenges in scaffolds, cells, and factors hinder effectiveness.

Area of Science:

Biomedical Engineering
Regenerative Medicine
Neuroscience

Background:

Peripheral nerve injuries (PNI) stem from diverse causes, leading to functional loss and neuropathic pain.
Current surgical repair relies on autogenous nerve grafts, which face limitations like donor site morbidity and tissue availability.

Purpose of the Study:

To review the challenges in developing tissue-engineered nerve constructs for PNI repair.
To explore alternative strategies beyond traditional autogenous nerve grafting.

Main Methods:

Review of current literature on tissue engineering for nerve regeneration.
Analysis of four key components: scaffold, support cells, induction factors, and extracellular matrices.
Examination of existing approaches and their limitations.

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Main Results:

Tissue-engineered nerve conduits have not yet matched autogenous grafts for long-distance nerve regeneration.
Significant challenges persist in optimizing the components of engineered nerve constructs.

Conclusions:

Despite progress, tissue-engineered solutions for PNI require further development to overcome current limitations.
Addressing challenges in scaffolds, cells, and growth factors is crucial for improving nerve regeneration outcomes.