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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Staiger, Volker Gärtner, Annette |
| Description | Author Affiliation: Gärtner A ( Max Planck Institute of Neurobiology, Am Klopferspitz 18A, 82152 Martinsried, Germany. agaertner@ucl.ac.uk); |
| Abstract | The neurotrophin (NT) brain-derived neurotrophic factor (BDNF) plays an essential role in the formation of long-term potentiation (LTP). Here, we address whether this modulation by BDNF requires its continuous presence, or whether a local increase in BDNF is necessary during a specific time period of LTP initiation. Using electrical field stimulation of primary cultures of hippocampal neurons, we demonstrate that short high-frequency bursts of stimuli that induce LTP evoke also an instantaneous secretion of BDNF. In contrast, stimuli at low frequencies, inducing long-term depression, do not enhance BDNF secretion, suggesting that BDNF is specifically present, and thus required, at the time of LTP induction. The field-stimulation-mediated BDNF secretion depends on the formation of action potentials and is induced by IP(3)-mediated Ca(2+) release from intracellular stores. Experiments, aimed at determining the sites of NT secretion that use NT6, showed similar patterns of surface labeling by field stimulation to those shown previously by high potassium. |
| ISSN | 00278424 |
| e-ISSN | 10916490 |
| Journal | Proceedings of the National Academy of Sciences of the United States of America |
| Issue Number | 9 |
| Volume Number | 99 |
| Language | English |
| Publisher | National Academy of Sciences |
| Publisher Date | 2002-05-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Calcium Metabolism Electric Stimulation Hippocampus Long-Term Potentiation Nerve Growth Factors Secretion Neurons Adenoviridae Genetics Animals Brain-Derived Neurotrophic Factor Cells, Cultured Cyclic AMP Electrophysiology Enzyme-Linked Immunosorbent Assay Microscopy, Electron Rats, Wistar Time Factors Research Support, Non-U.S. Gov't Multidisciplinary |
| Content Type | Text |
| Resource Type | Article |
| Subject | Multidisciplinary |
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