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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Haimann, C. Polak, J. M. Matteoli, M. Ceccarelli, B. Torri-tarelli, F. De Camilli, P. |
| Description | Author Affiliation: Matteoli M ( Consiglio Nazionale delle Ricerce Center of Cytopharmacology, University of Milano, Italy.); |
| Abstract | The regulatory peptide called calcitonin gene-related peptide (CGRP) was detected by immunofluorescence in frog motor neurons and motor nerve terminals. In motor nerve terminals, CGRP-like immunoreactivity was found to be segregated within large dense-core vesicles. To determine whether exocytosis from acetylcholine-containing small synaptic vesicles and from CGRP-containing large dense-core vesicles can be independently stimulated, nerve-muscle preparations were exposed to alpha-latrotoxin. This toxin induced complete depletion of acetylcholine-containing small synaptic vesicles but did not induce a parallel depletion of CGRP-like immunoreactivity and of large dense-core vesicles. These effects were independent of the presence of extracellular Ca2+ and occurred both at room temperature and at low temperature (1-3 degrees C). These findings suggest that exocytosis from the two vesicle populations is mediated by distinct biochemical mechanisms, which might be differentially regulated by physiological stimuli. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 19 |
| Volume Number | 85 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 1988-11-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Arthropod Venoms Pharmacology Exocytosis Drug Effects Neuromuscular Junction Neuropeptides Spider Venoms Synaptic Vesicles Cytology Animals Calcitonin Gene-Related Peptide Fluorescent Antibody Technique Immunohistochemistry Microscopy, Electron Rana Pipiens Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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