STUDY OF MAGNESIUM LEVEL IN MYOCARDIUM AND AORTA TISSUES FROM SUBJECTS FREE OF ISCHEMIC NECROSIS

  • 1 January 1977
    • journal article
    • research article
    • Vol. 25  (2) , 101-104
Abstract
Before carrying out a study on the levels of Mg in the myocardium and the aorta in subjects who had died of coronary thrombosis, the reference levels of Mg were determined in the right and left ventricles and in the aorta of 16 normal [human] subjects. The samples were homogenized and digested with nitric acid/hydrochloric acid mixture before the measurement was made; this was carried out by atomic absorption spectrophotometry. The Mg values are expressed in .mu.g/g of wet tissue, mg/g of tissular proteins and mg/g of total lipids in the aortic wall. The differences between the concentrations of proteins or Mg in the left and right ventricles are significant (P < 0.001). They probably derive from anatomic and physiological differences. A correlation was found which is significantly positive between Mg level and protein level in the ventricle. In the aorta, the proteins, lipids and Mg are dispersed because of the heterogeneous nature of the biochemical composition of this tissue according to age and area from which it was taken.

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