Kidney and Metabolic Bone Diseases Vol.16 No.4(2)

Theme The impact of bone and Ca/Pi metabolism on vascular disease
Title Pathology of calcification in long term hemodialysis
Publish Date 2003/10
Author Makio Kawakami Department of Pathology, Clinical Service, Tokyo Jikei Medical University
Author Hiraku Yoshida Department of Nephrology, Tokyo Jikei Medical University
Author Masafumi Suzuki Department of Pathology, Clinical Service, Tokyo Jikei Medical University
Author Toru Harada Department of Pathology, Clinical Service, Tokyo Jikei Medical University
Author Kaoru Iwabuchi Department of Pathology, Clinical Service, Tokyo Jikei Medical University
Author Keitaro Yokoyama Department of Nephrology, Tokyo Jikei Medical University
Author Yoshindo Kawaguchi Department of Nephrology, Tokyo Jikei Medical University
[ Summary ] The calcification of the cardiac valves, the coronary artery and the aorta were examined in 664 autospsy cases including dialysed, non-dialysed uremics and a control group. The following results were found: (1) the low correlation of BUN and creatinine in contrast to Ca and P favoring calcification, (2) high predisposition to intereferance by diabetic and hypertensive factors, (3) a significant effect on length of exposure to hypertension and dialysis became clear.
As to dialysis properties, we noted the following points: (4) initial ameriolation of heart load, eventually (after 6 years) resulted in severe decompensation, (5) a steady rise in blood Ca, and (6) periodic acceleration of calcification over 6 years, from long-term dialysis. These facts suggest that the bony and muscular site of dynamic Ca-metabolism is extended toward the highly Ca-exposed space in the mesenchymal portion, along the proximal arterial wall to the peripheral vasculature in tachytrophic organs.
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