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Published on: March 20, 2019
Axons and myelinating glia: An intimate contact
Lida Zoupi1, Maria Savvaki, Domna Karagogeos
1Department of Basic Science, Faculty of Medicine, University of Crete, Institute of Molecular Biology & Biotechnology-FoRTH, Heraklion, Greece.
IUBMB Life
|July 28, 2011
Summary
Axo-glial interactions in the nervous system create specialized domains for rapid signal transmission. These interactions are crucial for nerve conduction and maintaining nervous system function.
Area of Science:
- Neuroscience
- Cell Biology
- Biochemistry
Background:
- Vertebrate nervous system coordination relies on rapid signal transmission.
- Myelinated nerve fibers, insulated by myelin sheaths, enable high-speed nerve conduction.
- Axo-glial interactions are essential for segregating axons into functional domains.
Purpose of the Study:
- To review recent evidence on key players in axo-glial interactions.
- To highlight the importance of these interactions in myelinated fiber physiology.
- To discuss the role of axo-glial interactions in nervous system diseases.
Main Methods:
- This review synthesizes current research findings.
- It focuses on molecular and functional domains of myelinated fibers.
- Analysis of multiprotein complexes at specific axonal domains.
Main Results:
- Axo-glial interactions establish distinct domains: node of Ranvier, paranode, juxtaparanode, and internode.
- These domains feature specific multiprotein complexes involving ion channels, cell adhesion molecules, Neurexin family members, and cytoskeletal proteins.
- These molecular assemblies are critical for rapid action potential propagation.
Conclusions:
- Axo-glial interactions are fundamental to the physiology of myelinated nerve fibers.
- Understanding these interactions provides insights into nervous system function and disease.
- Key molecular players in these interactions are vital for maintaining nerve health.
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