Sodium hyaluronate-CNTF gelatinous particles promote axonal growth, neurogenesis and functional recovery after spinal cord injury

N Wang, S Zhang, A F Zhang, Z Y Yang, X G Li
Spinal Cord 2014, 52 (7): 517-23

OBJECTIVES: Currently, effective therapeutic strategy for spinal cord injury (SCI) is not clinically available. To establish a better method that may help repair the injured spinal cord, sodium hyaluronate-ciliary neurotrophic factor (CNTF) gelatinous particles were generated.

METHODS: A segment of spinal cord tissue was excised to form a 2.5-mm-long cavity at thoracic level in an adult rat, and sodium hyaluronate-CNTF gelatinous particles were implanted into the lesion cavity. The recovery of the injured spinal cord was evaluated by immunohistochemistry, nerve tracing, electrophysiological test and Basso-Beattie-Bresnahan locomotor rating scale.

RESULTS: Open-field locomotion of the sodium hyaluronate-CNTF rats was significantly enhanced up to 12 weeks postoperation. Together with the evidence of enhanced cortical motor evoked potentials and cortical somatosensory evoked potentials in the sodium hyaluronate-CNTF group, these findings suggested a powerful functional recovery component. Immunohistochemical analyses suggested that the functional recovery might be attributable partly to an increase in axonal regrowth as well as in replenishment of β-tubulin-III-positive neuron-like cells.

CONCLUSION: Sodium hyaluronate-CNTF gelatinous particles may provide an effective method for treating SCI.

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