Peripheral Nerve Repair in Rats Using Composite Hydrogel-Filled Aligned Nanofiber Conduits with Incorporated Nerve Growth Factor
Open accessAbstract
Repair of peripheral nerve defects with current synthetic, tubular nerve conduits generally shows inferior recovery when compared with using nerve autografts, the current gold standard. We tested the ability of composite collagen and hyaluronan hydrogels, with and without the nerve growth factor (NGF), to stimulate neurite extension on a promising aligned, nanofiber poly-L-lactide-co-caprolactone (PLCL) scaffold. In vitro , the hydrogels significantly increased neurite extension from dorsal root ganglia explants. Consistent with these results, the addition of hydrogels as luminal fillers within aligned, nanofiber tubular PLCL conduits led to improved sensory function compared to autograft repair in a critical-size defect in the sciatic nerve in a rat model. Sensory recovery was assessed 3 and 12 weeks after repair using a withdrawal assay from thermal stimulation. The addition of hydrogel did not enhance recovery of motor function in the rat model. The NGF led to dose-dependent improvements in neurite out-growth in vitro , but did not have a significant effect in vivo . In summary, composite collagen/hyaluronan hydrogels enhanced sensory neurite outgrowth in vitro and sensory recovery in vivo . The use of such hydrogels as luminal fillers for tubular nerve conduits may therefore be useful in assisting restoration of protective sensation following peripheral nerve injury.
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PLCL surface modification or covalent binding of bioactive molecules such as cell adhesion factors and cell growth factors can further improve compatibility with specific cells.
“PLCL surface modification or covalent binding of bioactive molecules, such as cell adhesion factors and cell growth factors, can further improve their compatibility with specific cells [25–27].”
From Application of PLCL as a biodegradable polymer in biomedical engineering (2026) · cites this paper as [25]
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Vijayavenkataraman, S. (2020) · Acta Biomaterialia · doi:10.1016/j.actbio.2020.02.003 · Cited by 556 · see citing works
Application of PLCL as a biodegradable polymer in biomedical engineering
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- Authors
- Jin, J., Limburg, S., Joshi, S. K., Landman, R., Park, M., Zhang, Q., Kim, H. T., & Kuo, A. C.
- Affiliations
- San Francisco VA Medical Center (US)
- Corresponding author
- Kuo, Alfred C.
- Venue
- Tissue Engineering Part A
- Publisher
- SAGE Publications
- Published
- 2013-06-17
- Volume
- 19
- Issue
- 19-20
- Pages
- 2138-2146
- ISSN
- 1937-3341 (ISSN-L)
- 1937-335X
- PMC
- PMC3761439
- OpenAlex
- W2003168311
- Cited by
- 68
- References
- 53
- Citations by year
- 2026: 1 · 2025: 4 · 2024: 6 · 2023: 6 · 2022: 2 · 2021: 5 · 2020: 7 · 2019: 14 · 2018: 3 · 2017: 8 · 2016: 2 · 2015: 3 · 2014: 7
- FWCI
- 1.96
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- Tissue Engineering Part A (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Funders
- U.S. Department of Defense (W81XWH0520094, W81XWH)
- U.S. Department of Veterans Affairs
- Northern California Institute for Research and Education (W81XWH-05-2-0094)
- National Institutes of Health (UL1TR000124)
- National Center for Advancing Translational Sciences
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Nerve injury and regeneration
- Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
- Health Sciences › Medicine › Surgery › Tissue Engineering and Regenerative Medicine
- Keywords
- peripheral nerve repair, nerve conduits, poly(L-lactide-co-ε-caprolactone), nerve growth factor, neurite outgrowth, sciatic nerve defect, sensory recovery, nerve autograft, protective sensation
- MeSH terms
- Animals, Cells, Cultured, Peripheral Nerves, Neurites, Hydrogel, Polyethylene Glycol Dimethacrylate, Nerve Growth Factor, Mice, Rats, Nanofibers
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