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- YOSHIOKA Tohru
- Department of Physiology, Yokohama City University, School of Medicine
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- ASANUMA Atsushi
- Department of Physiology, Tsurumi University, School of Dental Medicine
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- YANAGISAWA Keiji
- Department of Physiology, Tsurumi University, School of Dental Medicine
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- KATSUKI Yasuji
- National. Center for Biological Sciences
Bibliographic Information
- Other Title
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- Chemical Receptive Mechanism in the Lat
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Abstract
Stimulating effects of various mono- and divalent cations on the lateral-line organ were theoretically analysed by use of the site binding chemical adsorption model with the principle of “hard and soft acids and bases.” A linear relation between the softness parameter and the logarithmic value of the intrinsic association constant was obtained for the cations of Na, K, Tl, Ag, Ca, Mg, and Cd. The order of effectiveness of these cations agreed with that of the intrinsic association constant. Using these values for various cations, the critical concentration of divalent cations necessary to suppress the effect of monovalent cations was calculated and compared with the experimental values. The calculated concentration of the hard divalent cations (Ca2+, Mg2+), which suppressed the effect of the hard monovalent cations (K+, Na+), agreed with the experimental concentration. The same relations were obtained between the suppressive effect of a soft divalent and a soft monovalent cation.<BR>The chemical adsorption of Ag+ on the lateral-line organ of Xenopus laevis was investigated by using a transmission electron microscope equipped with an X-ray microprobe analyser in order to get further confirmation of this model. Silver applied to the lateral-line organ was found around a kinocilium but not in the hair cells of the lateralline organ. Thus chemical adsorption of the cation on the surface of the receptor membrane was directly proved.
Journal
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- The Japanese Journal of Physiology
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The Japanese Journal of Physiology 28 (5), 557-567, 1978
THE PHYSIOLOGICAL SOCIETY OF JAPAN
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Keywords
Details 詳細情報について
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- CRID
- 1390001205041643776
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- NII Article ID
- 130003404148
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- NII Book ID
- AA00691224
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- COI
- 1:CAS:528:DyaE1MXotl2ntA%3D%3D
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- ISSN
- 18811396
- 0021521X
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- NDL BIB ID
- 2072577
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- PubMed
- 739683
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed