Potentiation of inputs from the posterolateral amygdala to the dentate gyrus and resistance to stress ulcers formation in rats
Physical restraint was found to increase the activity of a number of multiple units in the lateral amygdala of rats. High-frequency electrical stimulation of units in the posterolateral amygdala increased the amplitudes of granule cell potentials in the dentate gyrus. This bilateral long-term potent...
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| Veröffentlicht in: | Physiology & behavior 1990-11, Vol.48 (5), p.659-664 |
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| creator | Henke, Peter G. |
| description | Physical restraint was found to increase the activity of a number of multiple units in the lateral amygdala of rats. High-frequency electrical stimulation of units in the posterolateral amygdala increased the amplitudes of granule cell potentials in the dentate gyrus. This bilateral long-term potentiation (LTP) of inputs from posterior areas of the lateral amygdala also attenuated the severity of stress ulcers produced by physical restraint. This effect was reversed by intraventricular injections of the selective N-methyl-D-aspartate receptor blocker, aminophosphonovaleric acid. LTP in this pathway also reduced “struggling” behavior during restraint. The data were interpreted to indicate that LTP in this temporal lobe pathway increased the coping ability because of faster habituation to stressors. |
| doi_str_mv | 10.1016/0031-9384(90)90207-K |
| format | Article |
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physiopathology</topic><topic>Animals</topic><topic>Brain Mapping</topic><topic>Dentate gyrus</topic><topic>Dominance, Cerebral - physiology</topic><topic>Electric Stimulation</topic><topic>Evoked Potentials - physiology</topic><topic>Habituation, Psychophysiologic - physiology</topic><topic>Hippocampus</topic><topic>Hippocampus - physiopathology</topic><topic>Long-term potentiation</topic><topic>Male</topic><topic>Motor Activity - physiology</topic><topic>N-Methyl-D-aspartate receptor</topic><topic>Nerve Fibers - physiology</topic><topic>Neural Pathways - physiopathology</topic><topic>Rats</topic><topic>Rats, Inbred Strains</topic><topic>Receptors, N-Methyl-D-Aspartate - physiology</topic><topic>Restraint</topic><topic>Stomach Ulcer - physiopathology</topic><topic>Stress ulcer</topic><topic>Stress, Psychological - complications</topic><topic>Synapses - physiology</topic><topic>Synaptic Transmission - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Henke, Peter G.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Neurosciences Abstracts</collection><collection>MEDLINE - 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| ispartof | Physiology & behavior, 1990-11, Vol.48 (5), p.659-664 |
| issn | 0031-9384 1873-507X |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Aminophosphonovaleric acid Amygdala Amygdala - physiopathology Animals Brain Mapping Dentate gyrus Dominance, Cerebral - physiology Electric Stimulation Evoked Potentials - physiology Habituation, Psychophysiologic - physiology Hippocampus Hippocampus - physiopathology Long-term potentiation Male Motor Activity - physiology N-Methyl-D-aspartate receptor Nerve Fibers - physiology Neural Pathways - physiopathology Rats Rats, Inbred Strains Receptors, N-Methyl-D-Aspartate - physiology Restraint Stomach Ulcer - physiopathology Stress ulcer Stress, Psychological - complications Synapses - physiology Synaptic Transmission - physiology |
| title | Potentiation of inputs from the posterolateral amygdala to the dentate gyrus and resistance to stress ulcers formation in rats |
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