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  • Title: Neurite extension of DRG neurons by gicerin expression is enhanced by nerve growth factor.
    Author: Hiroi S, Taira E, Ogawa K, Tsukamoto Y.
    Journal: Int J Mol Med; 2005 Dec; 16(6):1009-14. PubMed ID: 16273279.
    Abstract:
    Gicerin, a cell adhesion molecule, is expressed in dorsal root ganglion (DRG) and sciatic nerves during chick development. This molecule re-appears in these tissues after an injury to the sciatic nerve. In the present study, we investigated the expression of nerve growth factor (NGF) in the regenerating sciatic nerve of chicks and the effects of NGF on the expression and neurite activities of gicerin in DRG. In the sciatic nerve after a crush injury, the expression of NGF and gicerin increased in the Schwann cells and in the nerve fibers, respectively. NGF promoted the neurite projections from in vitro DRG on the gicerin ligands, which were inhibited by anti-NGF antibody. The gicerin mRNA expression increased in the DRG with NGF, which was inhibited by the co-incubation with anti-NGF antibody. These results indicate that NGF might therefore enhance the expression of gicerin in DRG, thereby promoting the gicerin-dependent neurite extension during sciatic nerve regeneration.
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