5,7-DIHYDROXYTRYPTAMINE DESTROYS INDOLEAMINE-ACCUMULATING CELL BODIES IN CARP ERTINA

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概要

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• Effects of 5,7-dihydroxytryptamine (5,7-DHT) on indoleamine-accumulating (IA-) cells were investigated on the retinas (cryo-sectioned or flat-mounted) of adult carp (Cyprinus carpio), by means of a histofluorescence technique. The eyes, pretreated with a single intravitreal injection of 5,7-DHT (15 μg), were removed at various testing periods (4 hr to 50 d) with or without an intravitreal injection of 5,6-dihydroxytryptamine (5,6-DHT; one or 5 μg) alone, or with the same injection of noradrenaline (NA; 5 μg) plus 5,6-DHT (5 μg) 2 hr prior to enucleation. In cryo-sections of the retinas loaded with 5,6-DHT(5 μg), the indoleamine was found to be taken up not only by IA-cells but also by other cells located in the amacrine cell layer. The latter class of cells was more weakly fluorescent and smaller in size than IA-cells. Two days after pretreatment with 5,7-DHT, IA-cells already became invisible, while the accumulative ability of smaller cells for 5,6-DHT remained. Subsequently, IA-cells were not seen again with 5,6-DHT in flat-mounts up to 50 d (the longest testing period in the present experiment) after pretreatment with 5,7-DHT. The results obtained reveal that intravitreally given 5,7-DHT (15 μg) destroyed quasipermanently the somata of retinal IA-cells in the adult carp.

• 日本組織細胞化学会の論文

著者

• Kato Satoru

  Department Of Neurophysiology Neuroinformation Research Institute University Of Kanazawa School Of M

• NEGISHI KOROKU

  Department of Neurophysiology, Neuroinformation Research Institute, University of Kanazawa School of

• TERANISHI TSUNENOBU

  Department of Neurophysiology, Neuroinformation Research Institute, University of Kanazawa School of

• Kato Satoru

  Department Of Molecular Neurobiology Graduate School Of Medicine Kanazawa University:crest

• Negishi Koroku

  Department Of Neurophysiology Neuroinformation Research Institute University Of Kanazawa School Of M

• Teranishi Tsunenobu

  Department Of Neurophysiology Neuroinformation Research Institute University Of Kanazawa School Of M

• Teranishi Tsunenobu

  Department Of Mechanical Engineering Toyama National College Of Technology

• Kato Satoru

  Department Of Applied Chemistry Graduate School Of Engineering Nagoya University

• Kato Satoru

  Department of agriculture, Kinki University

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