| Synaptic vesicles in motor synapses change size and distribution during the day. | |
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MedLine Citation:
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PMID: 19725115 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The morphology of Drosophila motor terminals changes along the day with a circadian rhythm controlled by the biological clock. Here, we used electron microscopy to investigate the size, number, and distribution of synaptic vesicles, at intervals of 6 h during 2 consecutive days, under light-dark (LD) or the first 2 days in constant darkness (DD). We found changes in the size and distribution of vesicles located either at the active zone or in the reserve pool, indicating a circadian rhythm of synapse reorganization. Vesicles at the active zone were generally smaller than those in the reserve pool in LD and DD conditions. The size of active zones vesicles decreased twice in LD, corresponding with times of more intense locomotion activity, but only once in DD conditions. |
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Authors:
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Santiago Ruiz; Maria Jose Ferreiro; Gabriela Casanova; Alvaro Olivera; Rafael Cantera |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Synapse (New York, N.Y.) Volume: 64 ISSN: 1098-2396 ISO Abbreviation: Synapse Publication Date: 2010 Jan |
Date Detail:
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Created Date: 2009-11-09 Completed Date: 2010-01-08 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8806914 Medline TA: Synapse Country: United States |
Other Details:
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Languages: eng Pagination: 14-9 Citation Subset: IM |
Affiliation:
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Departamento de Biolog??a del Neurodesarrollo, Instituto de Investigaciones Biol??gicas Clemente Estable, 11600 Montevideo, Uruguay. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Animals Circadian Rhythm / physiology* Drosophila melanogaster / physiology*, ultrastructure* Microscopy, Electron, Transmission Muscle, Skeletal / physiology, ultrastructure Neuromuscular Junction / physiology, ultrastructure Synaptic Vesicles / physiology*, ultrastructure* |
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