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Olfactory ensheathing cells promote collateral axonal branching in the injured adult rat spinal cord


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Chuah, MI, Choi-Lundberg, DL, Weston, S, Vincent, AJ, Chung, RS, Vickers, JC and West, AK 2004 , 'Olfactory ensheathing cells promote collateral axonal branching in the injured adult rat spinal cord' , Experimental Neurology, vol. 185 , pp. 15-25 , doi: 10.1016/j.expneurol.2003.09.008.

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In recent years, injection of olfactory ensheathing cells (ECs) into the spinal cord has been used as an experimental strategy to promote
regeneration of injured axons. In this study, we have compared the effects of transplanting encapsulated ECs with those injected directly into
the spinal cord. The dorsal columns of adult rats were cut at T8–9 and rats in experimental groups received either EC-filled porous polymer
capsules or culture medium (CM)-filled capsules with ECs injected at the injury site. Control rats were in three groups: (1) uninjured, (2)
lesion with transplantation of CM-filled capsules and (3) lesion with transplantation of CM-filled capsules and injections of CM. Three weeks
after injury, Fluororuby was injected into the hindlimb motor and somatosensory cortex to label corticospinal neurons. Observations indicated
that there were a few regenerating fibres, up to 10, in the EC-treated groups. In rats that received encapsulated ECs, regenerating fibres were
present in close association with the capsule. Rats that received EC injections demonstrated a significant increase in the number of collateral
branches from the intact ventral corticospinal tract (vCST) compared with the corresponding control, CM-injected group ( P = 0.003), while a
trend for increased collateral branches was observed in rats that received encapsulated ECs ( P = 0.07).

Item Type: Article
Authors/Creators:Chuah, MI and Choi-Lundberg, DL and Weston, S and Vincent, AJ and Chung, RS and Vickers, JC and West, AK
Keywords: Olfactory ensheathing cells; Spinal cord; Regeneration; Corticospinal tract; Collateral sprouting
Journal or Publication Title: Experimental Neurology
ISSN: 0014-4886
DOI / ID Number: 10.1016/j.expneurol.2003.09.008
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