The effect of various neurotransmitters and some of their agonists and antagonists on the crayfish abdominal positioning system |
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| Institution: | 1. Radiology Protection Dept., Nofer Institute of Occupational Medicine, Łódź, Poland;2. Toxicology and Carcinogenesis Dept., Nofer Institute of Occupational Medicine, Łódź, Poland;1. Zoologisches Museum, Christian-Albrechts-University of Kiel, Hegewischstr. 3, 24105 Kiel, Germany;2. Zoology, Universität Regensburg, Universitätstrasse 31, 93040 Regensburg, Germany;3. German Primate Center, Leibnitz Institute of Primate Research, Functional Imaging Department, Kellnerweg 4, Göttingen, Germany;4. Clinic of Radiology and Neuroradiology, Christian-Albrechts-Universität zu Kiel, Am Botanischen Garten 14, 24118 Kiel, Germany;5. Department of Functional Morphology and Biomechanics, Zoological Institute, Christian-Albrechts-University of Kiel, 24118 Kiel, Germany;1. Humboldt-Universität zu Berlin, Institut für Biologie, Vergleichende Zoologie, Philippstr. 13, 10115 Berlin, Germany;2. Cluster of Excellence Image Knowledge Gestaltung, Sophienstr. 22a, 10099 Berlin, Germany;1. Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, PR China;2. Function Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, PR China;3. College of Fisheries and Life Science, Dalian Ocean University, Dalian, China;1. Humboldt-Universität zu Berlin, Institut für Biologie, Vergleichende Zoologie, Philippstr. 13, 10115 Berlin, Germany;2. Cluster of Excellence, “Image Knowledge Gestaltung”, Humboldt-Universität zu Berlin, Sophienstr. 22a, 10178 Berlin, Germany |
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| Abstract: | 1. Crayfish abdominal nerve cords were perfused with selected transmitters or their agonists or antagonists. Motor activity underlying abdominal positioning behavior was monitored.2. All the neurotransmitters except glycine had a measurable effect on this system.3. Acetylcholine and its agonists were slightly stimulatory. Both muscarinic and nicotinic receptors were indicated.4. GABA was weakly inhibitory. Picrotoxin was strongly stimulatory, perhaps as a result of its known ability to block GABA and inhibitory acetylcholine receptors.5. Histamine was strongly inhibitory. Both H1 and H2 receptors were indicated.6. Glutamate was found to be slightly inhibitory while its agonist, NMDA, showed no effect.7. Finally, L-Dopa was stimulatory, but only at a high concentration. |
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