Age-related changes of elements in renal arteries of Thai and Japanese and the relationships among elements |
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Authors: | Pasuk Mahakkanukrauh Setsuko Tohno Yoshiyuki Tohno Cho Azuma Nutcharin Ongkana Yumi Moriwake Takeshi Minami |
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Institution: | (1) Department of Anatomy, Faculty of Medicine, Chiang Mai University, 50200 Chiang Mai, Thailand;(2) Laboratory of Cell Biology, Department of Anatomy, Nara Medical University, Kashihara, 634-8521 Nara, Japan;(3) Laboratory of Environmental Biology, Department of Life Science, Faculty of Science and Engineering, Kinki University, Higashi-Osaka, 577-8502 Osaka, Japan |
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Abstract: | To examine whether there were differences between reces in regard to age-related changes of elements and the relationships
among elements in the arteries, the authors investigated both the renal arteries of Thai and Japanese. The Thai subjects consisted
of 27 men and 11 women, ranging in age from 27 to 88 yr, whereas the Japanese subjects consisted of 19 men and 26 women, ranging
in age from 61 to 99 yr. After the ordinary dissections at Chiang Mai University and Nara Medical University were completed,
the bilateral renal arteries were resected and the element contents were determined by inductively coupled plasma-atomic emission
spectrometry. In the Thai, a slight accumulation of calcium and phosphorus occurred in the fifties, but thereafter headly
increased. In contrast, in the Japanese, an accumulation of calcium and phosphorus began to occur in the seventies and increased
markedly in the eighties. The result reveraled that a higher accumulation of calcium and phosphorus occurred in the renal
arteries of the Japanese in old age compared with those of the Thai. Regarding the relationships among elements, extremely
or very significant direct correlations were found among the contents of calcium, phosphorus, magnesium, and sodium in both
the renal arteries of the Thai and Japanese, except for magnesium and sodium contents in the renal arteries of the Thai. |
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Keywords: | Renal artery calcium phosphorus magnesium aging calcification |
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