Isolation of Neurogenic and Myogenic Activities by Joro Spider Toxin in the Adult Heart of the Isopod Crustacean Ligia exotica(Physiology)
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概要
- 論文の詳細を見る
The effects of Joro spider toxin (JSTX), a specific glutamate antagonist, on the adult heart of the isopod crustacean Ligia exotica were examined. By application of JSTX, excitatory junctional potentials (EJPs) caused by the cardiac ganglion activity in the myocardium were gradually abolished. Subsequently, the cardiac ganglion and myocardium exhibited independent activities with their respective rhythms. In saline containing JSTX, no changes were observed in the muscle activity when the ganglionic activity was changed by current injection into the cardiac ganglion neuron. These results indicate that two pacemaker sites, the cardiac ganglion and cardiac muscle, are present in the adult heart of Ligia exotica and suggest glutamatergic neuromuscular transmission between them.
- 社団法人日本動物学会の論文
- 1998-10-15
著者
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Sakurai Akira
Institute Of Biological Sciences University Of Tsukuba:(present Address)department Of Biological Sci
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Mori Akihiko
Institute Of Biological Sciences University Of Tsukuba
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Yamagishi Hiroshi
Institute of Biological Sciences, University of Tsukuba
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Yamagishi H
Department Of Biotechnology Kyoto Sangyo University
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Yamagishi Hiroshi
Institute Of Biological Sciences Univeisity Of Tsukuloa
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