An Improved Photoelectric Method for Recording Motile Responses of Individual Leucophores

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概要

• 論文の詳細を見る

• An improved photoelectric method for recording motile responses of individual leucophores was developed. Leucophores from scales of the medaka, Oryzias latipes, were used as a model. The intensity of light scattering from the peripheral dendritic zone (S_P) and that from the cell body (S_C) of each leucophore were separately transduced to the current changes, which were then converted to voltages, and appropriately amplified. Output voltages of both cahnnels were represented as "V_P=A_1×S_P" and "V_C=A_2×S_C", where A_1 and A_2 were the overall amplificatin coefficients for these channels, respectively. When leucosomes dispersed from the cell body into the dendrites, the V_P increased and the V_C decreased, while the reverse changes occurred when the leucosomes aggregated. Using a simple electronic circuit, the remainder of the two outputs, namely, V_P-V_C, could easily be obtained and recorded. As alternative expressions of the response, the ratio of the outputs (V_P/V_C), its square root (√<V_P/V_C)>, or √<(V_P+V_P)/(V_C+V_C)> could also be recorded using integrated circuits developed for such purposes (V_P, V_C : voltage biases applied to V_P and V_C). The relative merits of these types of analysis are discussed. Similar analysis should also be applicable to the motile activities of iridophores of the dendritic type, such as those of some gobiid fish.

• 社団法人日本動物学会の論文

著者

• Yamada Takashi

  Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima Uni

• 内田 久則

  北多摩病院外科

• 内田 久則

  東京大学医科学研究所外科・移植科

• Oshima Noriko

  Department of Biomolecular Science, Faculty of Science, Toho University

• Fujita Tomohiro

  Department of Biomolecular Science, Faculty of Science, Toho University

• Fujii Ryozo

  Department of Biomolecular Science, Faculty of Science, Toho University

• Fujii R

  Toho Univ. Chiba Jpn

• Fujii Ryozo

  Department Of Biology Faculty Of Science Toho University

• Oshima N

  Toho Univ. Chiba Jpn

• Fujita T

  Department Of Biomolecular Science Faculty Of Science Toho University

• Yamada Takashi

  Department Of Chemistry Faculty Of Science And Engineering Konan University

• Oshima Noriko

  Department Of Biology Faculty Of Science Toho University

• Fujita Tomohiro

  Department Of Biomolecular Science Faculty Of Science Toho University

• Yamada T

  Materials And Devices Development Center Sanyo Electric Co. Ltd.

• Yamada Takashi

  Department Of Animal Science Graduate School Of Agricultural Science Kobe University

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