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The effects of urinastatin on the plasma levels of granulocyte elastase during open heart surgery under simple deep hypothermia

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Abstract

Changes in granulocyte elastase (GLE) andβ-gluculonidase (β-gl) were observed during open heart surgeries which were performed under deep hypothermia with surface cooling. In addition, the effect of urinary trypsin inhibitor, urinastatin, on the activities of these enzymes was studied. The patients were divided into three groups, namely group U-I with intravenous injection of 6000 u·kg−1 of urinastatin before cooling, group U-II administered with an additional 6000 u·kg−1 after warming to 30°C, and an untreated group (Group C). The plasma level of GLE increased significantly in the three groups compared with the level before cooling respectively. In the group U-II, the GLE level after the warming was lower than that in the control group. The serum level ofβ-gl increased significantly in the three groups at the end of rewarming (36°C). The release of GLE from lysosomes in granulocytes was inhibited in the group U-II. The insufficient inhibition of GLE release in the group U-I is probably due to relatively short half-life of urinastatin. Therefore double administration of 6000 u·kg−1, before and after the cooling, may be required to achieve the therapeutic effect. Consequently, urinastatin appears to be useful in open heart surgery under deep hypothermia with surface cooling.

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Authors and Affiliations

  1. Department of Anesthesiology, Iwate Medical University, School of Medicine, 19-1, Uchimaru, Morioka, 020, Iwate, KJapan

    Takae Kawamura, Yoshihiko Shimoda & Reiji Wakusawa

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  1. Takae Kawamura
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  2. Yoshihiko Shimoda
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  3. Reiji Wakusawa
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Kawamura, T., Shimoda, Y. & Wakusawa, R. The effects of urinastatin on the plasma levels of granulocyte elastase during open heart surgery under simple deep hypothermia. J Anesth 6, 269–276 (1992). https://doi.org/10.1007/s0054020060269

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  • DOI: https://doi.org/10.1007/s0054020060269

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