Electron Microscope Studies on the Structural Complex of Transverse Tubules and Sarcoplasmic Reticulum in Scorpionfish Swimbladder Muscles

機関リポジトリ 機関リポジトリ (HANDLE) Web Site

この論文をさがす

説明

To clarify the distribution of transverse tubule-sarcoplasmic reticulum (T-SR) com-plexes in the swimbladder muscle (SBM) of the scorpionfish (Sebastiscus marmoratus ), elec-tron microscope observations were performed. In the anterior part of the SBM, Z-type triads were exclusively observed, in contrast to the regular distribution of AI- and Z-type triads with pentads and heptads in the posterior part of the SBM reported in our previous paper. Various body muscles of scorpionfish contained only Z-type triads. Furthermore, SBM and body wall muscles (BWM) in other sound-producing fishes each contained only one type of triadic con-tacts. In the posterior fibers of scorpionfish SBM, feet on the junctional SR membrane formed a square lattice with three or more vertical lines and numerous horizontal rows. Isolation and identification of ryanodine receptor (RyR) revealed that αRyR and βRyR coexist in the SBM and BWM of scorpionfish. Anti-αRyR and βRyR antibodies were produced in rabbits, and im-munoelectron microscopy with these antibodies demonstrated that both αRyR and βRyR form parallel lines respectively on the same junctional membrane as AI- and Z-type triads. The re-sults are discussed in connection with the anatomical features and function of the swimbladder.

収録刊行物

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ