Journal article
Stimulation of DOPA Synthesis in the Superior Cervical Ganglion by Veratridine
Journal of neurochemistry, v 42(2), pp 384-389
Feb 1984
PMID: 6141219
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Abstract
: We have investigated the effect of veratridine on DOPA (3,4‐dihydroxyphenylalanine) accumulation by the superior cervical ganglion of the rat. Incubation of the ganglion with veratridine (50 μM) causes a 10‐fold increase in the rate of DOPA accumulation. Veratridine‐stimulated DOPA accumulation is blocked by tetrodotoxin, but not by cholinergic or adrenergic antagonists or by decentralization of the ganglion. The cyclic nucleotide 8‐bromo cyclic GMP does not increase DOPA accumulation, and 8‐bromo cyclic AMP causes only a 2‐fold increase in DOPA accumulation, which is additive with the effect of veratridine. Thus, the action of veratridine appears to be independent of these cyclic nucleotides. The effect of veratridine on DOPA accumulation is probably due to a stable modification of tyrosine hydroxylase, since an increase in tyrosine hydroxylase activity can be measured in cell‐free extracts of veratridine‐treated ganglia. Both the increase in DOPA accumulation and the stable activation of tyrosine hydroxylase are dependent upon extracellular Ca2+. The activation of tyrosine hydroxylase by veratridine may be mediated by the depolarization of, and the subsequent entry of Ca2+ into, ganglionic neurons.
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Details
- Title
- Stimulation of DOPA Synthesis in the Superior Cervical Ganglion by Veratridine
- Creators
- Joel Horwitz - Illinois CollegeRobert L. Perlman - Illinois College
- Publication Details
- Journal of neurochemistry, v 42(2), pp 384-389
- Publisher
- Blackwell Publishing Ltd
- Number of pages
- 6
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Pharmacology and Physiology
- Web of Science ID
- WOS:A1984RZ41900012
- Scopus ID
- 2-s2.0-0021325816
- Other Identifier
- 991020531829304721
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InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Biochemistry & Molecular Biology
- Neurosciences