期刊
SEMINARS IN NEPHROLOGY
卷 34, 期 2, 页码 106-117出版社
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1016/j.semnephrol.2014.02.004
关键词
Uremia; protein-bound; renal dialysis
资金
- US National Institutes of Health [R01 DK80123, R21 AT005123]
- FNAIR
- Societe Francophone de Dialyse
- Japan Kidney Foundation
- Aichi Kidney Foundation
- Japanese Association of Dialysis Physicians
- Kureha Co
Many small solutes excreted by the kidney are bound to plasma proteins, chiefly albumin, in the circulation. The combination of protein binding and tubular secretion allows the kidney to reduce the free, unbound concentrations of such solutes to lower levels than could be obtained by tubular secretion alone. Protein-bound solutes accumulate in the plasma when the kidneys fail, and the free, unbound levels of these solutes increase more than their total plasma levels owing to competition for binding sites on plasma proteins. Given the efficiency by which the kidney can clear protein-bound solutes, it is tempting to speculate that some compounds in this class are important uremic toxins. Studies to date have focused largely on two specific protein-bound solutes: indoxyl sulfate and p-cresyl sulfate. The largest body of evidence suggests that both of these compounds contribute to cardiovascular disease, and that indoxyl sulfate contributes to the progression of chronic kidney disease. Other protein-bound solutes have been investigated to a much lesser extent, and could in the future prove to be even more important uremic toxins. Semin Nephrol 34:106-117 Published by Elsevier Inc.
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