Transport of receptors |
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Authors: | James K Wamsley |
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Institution: | (1) Neuropsychiatric Research Institute, 700 First Avenue South, 58103 Fargo, ND;(2) Departments of Pharmacology and Neuroscience, University of North Dakota, 58201 Grand Forks, ND |
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Abstract: | The axonal transport of neurotransmitter receptors is thought to be a common phenomenon in many neuronal systems. The “machinery”
for receptor (protein) “assembly” is found in the cell bodies of neurons and the “manufacture” of receptors takes place there.
These receptors are then “shipped” to their ultimate destinations by a transport process. This is an axonal transport mechanism
in the case of presynaptic receptors. Some form of transport process may also exist to send receptors out into the dendritic
arborizations of neurons, although the latter is more difficult to verify. Axonal transport has been demonstrated, in the
peripheral nervous systems, for many different neurotransmitter receptors. In the central nervous system, the results are
less clear, but indicate the presence of a transport mechanism for catecholamine, acetylcholine, and opiate sites. One important
component then, in the development of receptors, is the transportation to terminal membrane sites where they are ultimately
incorporated and available for interaction with neurotransmitters and drugs. |
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Keywords: | Presynaptic receptor axonal transport of receptors receptor flow heteroreceptors muscarinic receptors opiate receptor β -adrenergic receptor |
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