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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Perney, T. M. Leeman, S. E. Miller, R. J. Hirning, L. D. |
| Abstract | We examined the effects of dihydropyridine drugs on evoked neurotransmitter release from cultured neonatal rat sensory and sympathetic neurons. Depolarization with K+-rich solutions increased the release of substance P from cultured sensory neurons. This release was enhanced by BAY K8644 and (+)-202791 and was blocked by a variety of other dihydropyridines including (-)-202791, by Co2+, or in Ca2+-free solutions. K+-rich solutions also stimulated the release of [3H]norepinephrine from cultured sympathetic neurons. This release was also completely blocked by Co2+ or in Ca2+-free solution. In contrast to the situation in sensory neurons, however, the evoked release of [3H]norepinephrine was completely resistant to the blocking effects of dihydropyridine such as nimodipine. However, BAY K8644 was able to enhance the evoked release of [3H]norepinephrine, and this enhancement was blocked by nimodipine. These results are discussed in relation to the possible participation of multiple types of calcium channels in the release of neurotransmitters. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 17 |
| Volume Number | 83 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1986-10-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Calcium Physiology Ion Channels Neurotransmitter Agents Secretion Peripheral Nerves Animals Calcium Channel Blockers Pharmacology Culture Techniques Ganglia, Spinal Ganglia, Sympathetic Norepinephrine Potassium Substance P Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, P.H.S. Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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