Abstract
A general scheme for neuropeptide metabolism is outlined and the potential sites of regulation are discussed. Two major sites of regulation are distinguished: transcription which ultimately limits the rate of translation to form the prepropeptide, and post-translational processing steps. The consequences of up-regulation of these steps in response to increased metabolic demand are discussed. An alternative strategy for peptidergic neurons, reliance on a large pool of neuropeptide, is proposed. Data on the response of enkephalin-containing cell to increased levels of stimulation are reviewed. It is concluded that there is good evidence for genomic up-regulation, perhaps in association with regulation of processing. Evidence based on studies on enkephalin-containing amacrine cells in the chicken retina is also reviewed. It is suggested that these cells rely on a large pool of neuropeptide to cope with changes in demand.
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Special issue dedicated to Dr. Lawrence Austin.
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Morgan, I.G., Chubb, I.W. How peptidergic neurons cope with variation in physiological stimulation. Neurochem Res 16, 705–714 (1991). https://doi.org/10.1007/BF00965559
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DOI: https://doi.org/10.1007/BF00965559