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Haptoglobin

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haptoglobin /hap·to·glo·bin/ (hap?to-glo´bin) a plasma glycoprotein with alpha electrophoretic mobility that irreversibly binds free hemoglobin, resulting in removal of the complex by the liver and preventing free hemoglobin from being lost in the urine; it has two major genetic variants, Hp 1 and Hp 2.
hap·to·glo·bin (hpt-glbn)
n.
A plasma protein that is a normal constituent of blood serum and functions in the binding of free hemoglobin in the bloodstream.

Haptoglobin
A blood protein made by the liver. Its main role is to save iron by attaching itself to any hemoglobin released from a red cell.

haptoglobin
a group of serum alpha2 globulin glycoproteins, produced by the liver, that bind free hemoglobin; important in acute phase reactions (response). The different types, genetically determined, are distinguished electrophoretically.

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HCB also affected transcript levels of other APPs, such as haptoglobin (a hemoglobin scavenger), lipopolysaccharide-binding protein, orosomucoid (important in immunomodulation), and metallothionein and ceruloplasmin (antioxidants).
1 mg/dL; serum haptoglobin level, <38 mg/dL (normal range, 60-160 mg/dL): results of direct and indirect Coombs test, negative.
A modest decrease in hematocrit and red blood cell counts within 24 hours after the race suggests hemolysis although serum haptoglobin levels were not measured.
 
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