Neural Regeneration Research ›› 2013, Vol. 8 ›› Issue (4): 376-382.doi: 10.3969/j.issn.1673-5374.2013.04.010

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Neuroprotective role of fibronectin in neuron-glial extrasynaptic transmission

Jintang Wang1, Ling Yin2, Zheng Chen1   

  • Received:2012-07-30 Revised:2012-10-12 Online:2013-02-05 Published:2013-02-05
  • Contact: Zheng Chen, Master, Chief physician, Institute for Geriatric Clinic and Rehabilitation, Beijing Geriatric Hospital, Beijing 100095, China, paul_c99@ sina.com
  • About author:Jintang Wang☆, M.D., Associate investigator. Jintang Wang and Ling Yin contributed equally to this work.
  • Supported by:

    This work was supported by a grant from the National Science and Technology Infrastructure Platform, Ministry of Science and Technology, No. 2005DKA32400

Abstract:

Most hypotheses concerning the mechanisms underlying Parkinson’s disease are based on altered synaptic transmission of the nigrostriatal system. However, extrasynaptic transmission was recently found to affect dopamine neurotransmitter delivery by anisotropic diffusion in the extracellular matrix, which is modulated by various extracellular matrix components such as fibronectin. The present study reviewed the neuroprotective effect of fibronectin in extrasynaptic transmission. Fibronectin can regulate neuroactive substance diffusion and receptor activation, and exert anti- neuroinflammatory, adhesive and neuroprotective roles. Fibronectin can bind to integrin and growth factor receptors to transactivate intracellular signaling events such as the phosphatidylinositol 3-kinase/protein kinase B pathway to regulate or amplify growth factor-like neuroprotective actions. Fibronectin is assembled into a fibrillar network around cells to facilitate cell migration, molecule and ion diffusion, and even drug delivery and treatment. In addition, the present study analyzed the neuroprotective mechanism of fibronectin in the pathogenesis of Parkinson’s disease, involving integrin and growth factor receptor interactions, and discussed the possible therapeutic and diagnostic significance of fibronectin in Parkinson’s disease.

Key words: neural regeneration, neurodegenerative diseases, Parkinson’s disease, fibronectin, integrin, extrasynaptic transmission, neuroglia, neuroprotection, grants-supported paper, photographs-containing paper, neuroregeneration