Hemoglobin Reabsorption

Baines AD, Christoff B, Wicks D, Wiffen D, Pliura D Cross-linked hemoglobin increases fractional reabsorption and GFR in hypoxic isolated perfused rat kidneys. Am J Physiol 269 628-36,1995... 

In conclusion, bile pigment metabolism can be divided into at least seven separate steps (1) hemoglobin breakdown in the reticuloendothelial cell (2) transfer of bilirubin from the reticuloendothelial to the hepatic cell by way of the blood (3) conversion of bilirubin to bilirubin glucuronide inside the hepatic cell (4) excretion of conjugated bile in the bile duct (5) urobilinogen formation (6) urobilinogen reabsorption and (7) re-excretion of urobilinogen in feces and urine (see Fig. 6-13). 

Hemoglobin is reabsorbed in the proximal tubules and in the distal tubule at the site of maximum sodium reabsorption. The reabsorption of electrolytes, organic acids, and organic bases is discussed in the sections devoted to electrolyte metabolism and acid-base regulation. The fate of urea in the kidney is discussed later [7]. 

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