筋肉内骨化異常筋肉の化学成分と組織

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タイトル別名
  • Chemical Components and Histology of an Abnormal Muscle Subject to Intra-Muscular Ossification
  • キンニクナイ コッカ イジョウ キンニク ノ カガク セイブン ト ソシキ

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抄録

An abnormal muscle in intra-muscular ossification is extremely rare. Ossification was observed in a whole cross section of bovine M. longissimus thoracis by direct X-ray photography. This sample showed a high pH value of 7.05, and the proportions of moisture and solid matter content were 83% and 12.6%, respectively. Hydroxyprorine, prorine and glycine content, which are rich in collagen fibers, were very much higher in the abnormal muscle than in the normal sample. Microscopic observation showed that the tissues were composed of spindle cells, not typical muscle fibers, and were similar to connective tissues observed by histochemical staining. However, the peripheral muscle, M. trapezius thoracicus, didn't contain any solid matter and its amino acid composition was not different from that of the normal muscle. When compared with M. trapezius thoracicus the abnormal M. longissimus thoracis, Ca and P content were approximately 25 times and 3 times higher, respectively. The ossified solid contained Ca, P and Sr levels similar to those in the costal bone, while Zn and Fe levels were 3-4 times as high. The gross structure of the solid was coral-formed, porous and shaped into branches. A sponge-shaped surface was observed under a scanning electron microscope. One of the probable reasons behind the ossification is the formation of the first connective tissues in the muscle, followed by the process of calcification or metaplasia. The tissues damaged by the ossification were repaired with connective tissues, and the ossification process was repeated causing it to spread into the whole muscle.

収録刊行物

  • 日本畜産学会報

    日本畜産学会報 66 (9), 796-801, 1995

    公益社団法人 日本畜産学会

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