Axonal Transport in Neuronal Growth and Regeneration by Sidney Ochs (auth.), John S. Elam, Paul Cancalon (eds.)

By Sidney Ochs (auth.), John S. Elam, Paul Cancalon (eds.)

Over the previous a number of years, the velocity of analysis at the regulate of axonal progress has elevated at a impressive fee, and this task is mirrored in a starting to be literature facing a number of points of axonal progress and regener­ ation. it sounds as if well timed to check the position performed by way of axonal delivery within the intrinsic responses of neurons within the development and regrowth techniques. in the course of the cooperation of the senior editors of this sequence, we have now been given the chance to deliver any such concentration to the present quantity. we want to recognize that the contributing authors attended a confer­ ence on "The position of Axonal delivery in Neuronal development and Regenera­ tion" held in Tallahassee, Florida in March, 1983, subsidized by means of the Psycho­ biology examine heart of the Florida kingdom college. it's our desire that the various perceptions and insights expressed in those chapters resulted from our interactions.

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33 RETROGRADE AXONAL TRANSPORT: PHYSIOLOGICAL SIGNIFICANCE At axon terminals, macromolecular substances can be incorporated either by so-called fluid-phase endocytosis or by adsorptive endocytosis (Kristensson, 1978). In fluid-phase endocytosis, a substance does not interact with the axonal surface, and the incorporation is in direct proportion to the concentration of the substance in the surrounding medium. , cationized ferritin is readily adsorbed and incorporated at axon terminals, whereas anionic ferritin is not.

Lebeux, Y. , 1975, An ultrastructural study of the microfilaments in rat brain by heavy meromyosin labelling: The perikaryon, dendrites, and the axon, Cell Tissue Res. 160:1-36. ) and its possible role in excitability, J. Cell Bioi. 78:597-621. , 1982, Redistribution of proteins of fast axonal transport following administration of {1,{1-iminodiproprionitrile: A quantitative autoradiographic study, J. Cell Bioi. 95:672-675. , Palay, S. , 1976, The Fine Structure of the Nervous System, W. B. Saunders, Philadelphia.

The prime candidates included agranular reticulum, mitochondria, synaptic vesicles, and lysosomal structures. , 1976), but the dynamics of these organelles were unknown. The possibility that some or all of the material in fast transport might be moving laterally within the plasma membrane can be excluded. , 1973). , 1980). FAST AXONAL TRANSPORT 15 Histochemical and immunohistochemical studies showed that proteins known to be moving at a fast rate tended to be associated with smooth membranous structures (Dahlstrom, 1971; Kasa, 1968), but analysis of the accumulation of enzyme activities at a lesion consistently indicated the presence of both a moving fraction and a stationary fraction for all enzymes studied (Brimijoin, 1975).

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