• Seminars in perinatology · Dec 2004

    Review

    Regulating axon growth within the postnatal central nervous system.

    • Fenghua Hu and Stephen M Strittmatter.
    • Department of Neurology, Yale University School of Medicine, New Haven, CT 06520, USA.
    • Semin. Perinatol. 2004 Dec 1; 28 (6): 371-8.

    AbstractAs neuronal development enters its final stages, axonal growth is restricted. Recent work indicates that several myelin-derived proteins, Nogo, MAG and OMgp, play a critical role in restricting axonal growth in the mature central nervous system (CNS). These proteins function by binding to an axonal NgR protein that limits axonal growth by activating Rho in neurons. Hypoxic conditions during the later stages of neuronal development have a prominent effect on oligodendrocytes and hence on the expression of these axon growth inhibitors. Reduced expression of these proteins caused by the developmental hypoxia, or direct blockade of the myelin inhibitor pathways in the adult CNS leads to axonal sprouting and the formation of new neuronal connections. The regulation of axonal growth, sprouting and connections in the postnatal brain by myelin proteins is an area of important investigation and potential therapeutic intervention.

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