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Free Content A Device to Measure Oxygen Consumption during the Hypothermic Perfusion of the Liver

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This work deals with the construction and performance of a device designed to measure the oxygen consumption by the liver during hypothermic perfusion in the rat model. Due to its simple design and the utilization of standard materials, it could serve to determine the role of oxygenation during hypothermic perfusion of the liver. The system consists of a reservoir containing the preservation solution, a peristaltic pump and an internal oxygenator made of silicone tube. A five ports manifold connects the circulation to the liver (inflow), to a hydrostatic manometer and to two sample ports; the liver outflow and temperature sensor or gas calibration. Finally the exit port connects the circulation fluid with an oxygen electrode. The preservation solution is pumped through the liver at a constant pressure (77 ± 15 mmH2O) and a perfusion flow of 0.39 – 0.49 mL.min−1.g liver−1. To test the system, two to four hours perfusion experiments were performed, at temperatures of 5 and 10°C. Two preservation solutions were evaluated: Custodiol and Bes-Gluconate-Sucrose. The solubility of oxygen in the preservation solutions was determined, and the oxygen consumption by preserved rat livers was measured.

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Document Type: Research Article

Publication date: September 1, 2009

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  • CryoLetters is a bimonthly international journal for low temperature sciences, including cryobiology, cryopreservation or vitrification of cells and tissues, chemical and physical aspects of freezing and drying, and studies involving ecology of cold environments, and cold adaptation

    The journal publishes original research reports, authoritative reviews, technical developments and commissioned book reviews of studies of the effects produced by low temperatures on a wide variety of scientific and technical processes, or those involving low temperature techniques in the investigation of physical, chemical, biological and ecological problems.

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