Earthworm extracts facilitate pc12 cell differentiation and promote axonal sprouting in peripheral nerve injury
Journal
American Journal of Chinese Medicine
Journal Volume
38
Journal Issue
3
Pages
547-560
Date Issued
2010
Author(s)
Abstract
The present study provides in vitro and in vivo evaluations of earthworm (Pheretima aspergilum) on peripheral nerve regeneration. In the in vitro study, we found the earthworm (EW) water extracts caused a marked enhancement of the nerve growth factor-mediated neurite outgrowth from PC12 cells as well as the expressions of growth associated protein 43 and synapsin I. In the in vivo study, silicone rubber chambers filled with EW extracts were used to bridge a 10 mm sciatic nerve defect in rats. Eight weeks after implantation, the group receiving EW extracts had a much higher success percentage of regeneration (90%) compared to the control (60%) receiving the saline. In addition, quantitative histology of the successfully regenerated nerves revealed that myelinated axons in EW group at 31.25 μg/ml was significantly more than those in the controls (p < 0.05). These results showed that EW extracts can be a potential growth-promoting factor on regenerating peripheral nerves. ? 2010 World Scientific Publishing Company Institute for Advanced Research in Asian Science and Medicine.
Subjects
Earthworm; PC12 cell; Peripheral nerve regeneration; Silicone rubber; Traditional chinese medicine
SDGs
Other Subjects
earthworm extract; growth promotor; silastic; sodium chloride; tissue extract; unclassified drug; animal experiment; animal model; article; cancer cell; cell differentiation; Chinese medicine; controlled study; earthworm; electrophysiology; histopathology; in vitro study; in vivo study; medicinal species; nerve fiber growth; nerve regeneration; nerve sprouting; nonhuman; peripheral nerve injury; quantitative analysis; rat; Animals; Axons; Cell Differentiation; Dose-Response Relationship, Drug; Electrophysiology; Mice; Nerve Regeneration; Neurites; Neurogenesis; Oligochaeta; PC12 Cells; Rats; Rats, Sprague-Dawley; Sciatic Nerve; Tissue Extracts
Type
journal article