In vitro axonal transport of tritiated protein decreased 40 to 60 percent when neuronal cell bodies were incubated in calcium-free medium, but was not affected when only nerve trunks were exposed to calcium-free conditions. In addition, calcium-45 was transported along axons at a rate similar to that of rapidly transported tritiated protein. These data are interpreted to suggest that calcium ions are involved in the initiation of axonal transport and in the coupling of transported proteins to the transport system.

Animals↗

PubMed1975

Nerve impulse-enhanced release of amino acids from non-synaptic regions of peripheral and central nerve trunks of bullfrog.

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Amino Acids↗

PubMed1975

Axoplasmic transport of proteins in vitro in primary afferent neurons of frog spinal cord: effect of Ca2+-free incubation conditions.

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Animals↗