1117 ヒト血管組織Ca含有量の加齢と部位による変化(OS-5 生体組織・細胞のバイオメカニクス)

概要

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We have determined Ca contents in human vessels by Ar-microwave induced plasma atomic emission spectroscopy. 0n the basis of this measurement, we have studied relation between Ca content and age, and that of between Ca content and vessel region. Ca contents are femoral artery > thoracic aorta > internal jugular vein > superior vena cava > inferior vena cava. In the case of arterial tissue, Ca content increases with aging. Ca contents in umbilical artery and umbilical vein, which are used as the reference to aging and mechanical stress, are the same level as those in adult veins. Ca contents in monkey arteries are much smaller than those in human vessels, and the difference between Ca content in upper limb and that in lower one is not evident. In the case of human, however, Ca content in artery of lower limb is larger than that of upper one, and especially large in the part of elbow, thigh and knee. These results suggest that the effect of mechanical stress is one important factor for increase of Ca content in the arterial tissue.
一般社団法人日本機械学会の論文
2000-03-16