The effect of renal transplantation on middle molecules in plasma and urine.

The plasma level and urinary excretion of middle molecules were determined in 5 patients with chronic uremia undergoing renal transplantation. The results demonstrate that after successful transplantation, the uremic middle molecules disappear rapidly from plasma while being excreted in the urine. The reduction in plasma level of middle molecules after transplantation is more rapid than the reduction in creatinine concentration.