Neurofilaments

  • P. A. M. Eagles
  • H. C. Pant
  • H. Gainer

Abstract

The idea of a neurofilamentous skeleton inside nerve cells is not new. Almost 100 years ago Schultze first expressed the view regarding the presence of neurofibrillar networks within neurons. Many workers doubted the existence of these structures because the methods used to visualize them were capricious, different results being found in different laboratories (see review by Parker, 1929). In the 1890s few were able to emulate the techniques of Apáthy whose skills were widely acclaimed. It was not until the development of the novel and reproducible methods for silver staining by Bielschowsky and Ramón y Cajal that neurofibrils were routinely found. With the advent of high-resolution electron microscopic techniques, we now know that the neurofibrillary structures seen by these early microscopists were composed of the 100-Å-diameter intermediate filaments characteristic of nerve cells—neurofilaments (Boycott et. al., 1961; Gray and Guillery, 1961). In this review, we discuss the more recent history regarding neurofilaments and focus on current unresolved questions regarding their architecture, enzymatic modification, and development. While being a fairly general account of the neurofilament literature, especially over the past decade, we dwell in depth on key issues—like the nature of neurofilament sidearms, and the phosphorylation dependence of many neurofilament antibodies that will be helpful for both specialist and more general readers.

Keywords

Intermediate Filament Coiled Coil Stellate Ganglion Giant Axon Squid Giant Axon 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Abbreviation

Anti-IFA

monoclonal antibody (MAb) that binds to intermediate filaments (Pruss et. al., 1981)

NFH

the heavy-molecular-weight component of the mammalian triplet with an apparent molecular weight on SDS-PAGE around 200k, also called NF200

NFM

the medium component of the triplet with an apparent molecular weight on SDS-PAGE around 160k, also called NF160

NFL

the light component of the triplet with an apparent molecular weight on SDS-PAGE around 70k, also called NF70.

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Copyright information

© Springer Science+Business Media New York 1990

Authors and Affiliations

  • P. A. M. Eagles
    • 1
  • H. C. Pant
    • 2
  • H. Gainer
    • 3
    • 4
  1. 1.Department of BiophysicsKing’s College LondonLondonUK
  2. 2.Laboratory of Preclinical Studies, National Institute on Alcohol Abuse and AlcoholismNational Institutes of HealthRockvilleUSA
  3. 3.Laboratory of Neurochemistry and NeuroimmunologyNational Institute of Child HealthBethesdaUSA
  4. 4.Human DevelopmentNational Institutes of HealthBethesdaUSA

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