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[Changes in liver tissue amino acids during hemorrhagic shock].

Changes in amino acids in liver tissue during hemorrhagic shock were examined in eight mature mongrel dogs using the microdialysis method. The mean blood pressure was maintained at 50 mmHg by exsanguination, and the values of liver tissue amino acids after 30 minutes showed significant decreases of aspartate, glutamate, histidine, glutamine, glycine and taurine. The decrease of taurine was especially marked. The values dropped further 30 minutes after returning the blood into circulation with some exceptions. These results suggest the possibility that hemorrhagic shock causes reduction in uptake of amino acids by the liver or consumption of amino acids in the liver, and that bile acid metabolism appears to be disturbed by the marked drop in the taurine level. It is necessary to give careful consideration to the possible existence of reduced amino acid metabolism in the liver in the treatment of hemorrhagic shock.