魚類単一筋線維の張力測定を基礎にした“あらい"の現象の解明に関する研究
Project/Area Number |
08660250
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Fisheries chemistry
|
Research Institution | Mie University |
Principal Investigator |
NAKAYAMA Teruo Mie University, Faculty of Bioresources, Professor, 生物資源学部, 教授 (00046343)
|
Project Period (FY) |
1996 – 1998
|
Project Status |
Completed (Fiscal Year 1998)
|
Budget Amount *help |
¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1998: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1997: ¥400,000 (Direct Cost: ¥400,000)
|
Keywords | "Arai" phenomenon / Calcium ions / Water / Fish Muscle |
Research Abstract |
The relationship between carp muscle tension in rigor and the tension induced by permeation of calcium ions from immersion solution were investigated. In both unstressed and stressed fish muscles, the first peak tension was generated by the permeation of calcium ions through the site of endomysium in muscle surface which was damaged at the time of the trimming of excised muscle. Since endomysium structure in muscle inside was not weakened in unstressed fish muscle, calcium ions in immersion solution could not permeate into muscle inside. Therefore, the tension generations due to the rigor and the external calcium ions could be distinguished as two independent phenomena. Since endomysium structure in muscle inside was weakened in stressed fish muscle, calcium ions could permeate into muscle inside. As a result, the tension generations due to the rigor and the external calcium ions were detected as a superimposed phenomenon. When the osmotic pressure was increased, the muscle surface contracted stronger with more external calcium ions generating greater first peak tension and the external calcium ions became not to permeate into muscle inside. The tension generations due to the rigor and the external calcium ions became to be distinguished again. "Arai" is a phenomenon that the calcium ions in the immersion solution permeate intomuscle surface which was damaged at the tine of muscle strip excision, and their interaction with the remaining ATP induces the tetanic contraction of muscle. The water in the immersionsolution not only promotes the permeation of calcium ions, but also generates the muscletension by its own permeation. This investigation enabled to distinguish the effects of calcium ions and waler quantitatively, and the extents of these effects were discussed.
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Report
(4 results)
Research Products
(15 results)