NGIWYamide-induced Contraction of Tube Feet and Distribution of NGIWYamide-like Immunoreactivity in Nerves of the Starfish Asterina pectinifera(Physiology)
スポンサーリンク
概要
- 論文の詳細を見る
NGIWYamide, a neuropeptide recently isolated from sea cucumbers, was tested on tube feet of the starfish Asterina pectinifera. NGIWYamide (10^<-6>-10^<-4>M) caused contraction of isolated tube feet. NGIWYamide-like immunoreactivity (NGIWYa-LI) was investigated with an antiserum against NGIWYamide. NGIWYa-LI was found in the radial nerve cord (RNC), the marginal nerve, and the tube feet. Both ectoneural and hyponeural parts of the RNC showed NGIWYa-LI. Immunoreactive cell bodies were found in both parts of RNC. Extensive labeling in the basal region of the ectoneuraj part suggests that a substantial proportion of axons in this part contains NGIWYamide or a similar substance. In tube feet, NGIWYa-LI was found in the sub-epithelial nerve plexus and in the basal nerve ring. Double labeling along with 1E11, a neuron-specific monoclonal antibody developed from A. pectinifera, indicated that the structures with NGIWYa-LI are neurons. These results suggest that NGIWYamide or an NGIWYamide-like peptide exists in starfish and functions as a neurotransmitter or a neuromodulator.
- 2006-07-25
著者
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Inoue Masahide
Department of Orthodontics, Okayama University Graduate School of Medicine and Dentistry
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NAKAJIMA Yoko
Department of Biology, Keio University
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Inoue M
Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of
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Motokawa T
Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of
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Nakajima Yoko
Department Of Biology Keio University
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Inoue Masahide
Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of
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Saha Apurba
Department of Biological Sciences, Graduate School of Bioscience and Biotechnology, Tokyo Institute
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Tamori Masaki
Department of Biological Sciences, Graduate School of Bioscience and Biotechnology, Tokyo Institute
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Motokawa Tatsuo
Department of Biological Sciences, Graduate School of Bioscience and Biotechnology, Tokyo Institute
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Saha Apurba
Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of
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Tamori Masaki
Department Of Biological Sciences Graduate School Of Bioscience And Biotechnology Tokyo Institute Of
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Motokawa Tatsuo
Department Of Biological Scieces Faculty Of Bioscience And Biotechnology Tokyo Institute Of Technolo
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