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Role of oxygen radicals in tourniquet-related ischemia-reperfusion injury of human patients

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Summary

In the current study we evaluated effluent blood from extremities of human patients undergoing reconstructive surgical treatment which is routinely accompanied by upper extremity exsanguination and application of a tourniquet. Following tourniquet release (reperfusion), there were immediate increases in the plasma levels of xanthine oxidase activity, uric acid, and histamine. Xanthine dehydrogenase activity was not detectable. Plasma also contained products consistent with the formation of oxygen-derived free radicals, namely hemoglobin and fluorescent compounds. Our data indicate in humans that ischemia-reperfusion events are associated with the appearance of xanthine oxidase activity and it's products in the plasma effluent.

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Abbreviations

XO:

xanthine oxidase

XD:

xanthine dehydrogenase

IPSI:

ipsilateral limb

CONTRA:

contralateral, limb

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Supported in part by grants GM-28499, GM 29507, HL 31963, GM 39397, HL-21568, and HL-33064 from the National Institutes of Health and FR 744/1 from the Deutsche Forschungsgemeinschaft

Manuscripts published in this issue were the matter of a Symposium held at the University of Ulm, April 24–27, 1991

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Friedl, H.P., Till, G.O., Trentz, O. et al. Role of oxygen radicals in tourniquet-related ischemia-reperfusion injury of human patients. Klin Wochenschr 69, 1109–1112 (1991). https://doi.org/10.1007/BF01645168

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  • DOI: https://doi.org/10.1007/BF01645168

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