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  • Title: Effects of heparin on the inhibitory activities of human urinary trypsin inhibitor (ulinastatin) on trypsin, chymotrypsin and leukocyte elastase.
    Author: Shikimi T, Hattori K, Takaori S.
    Journal: Jpn J Pharmacol; 1993 May; 62(1):115-8. PubMed ID: 8341025.
    Abstract:
    Effects of heparin on the inhibitory activities of human urinary trypsin inhibitor (ulinastatin) on trypsin, chymotrypsin and leukocyte elastase were studied. Heparin per se neither influenced the enzymatic activities nor changed the mode of inhibition of ulinastatin on the enzymes. In the presence of heparin, inhibitory effects of ulinastatin on trypsin were enhanced, whereas its effects on chymotrypsin and elastase were attenuated. These results suggest that the two functional domains in ulinastatin are differently affected by heparin.
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