Donor kidney viability test for improved preservation

A - Human Necessities – 01 – N

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A01N 1/02 (2006.01) G01N 33/48 (2006.01) G01N 33/94 (2006.01)

Patent

CA 2230474

The present invention contemplates a methodology which employs cold perfusion of donor organs with a colloid preservation solution at a selected perfusion pressure which avoids tubular reabsorption and consequent energy loss. The present invention is also directed towards the direct continuous measurement of Glomerular Filtration Rate (GFR) through measurement of urine formation during the perfusion period. The present invention further provides a method to assess afferent arteriole and efferent arteriole vascular patency. The present invention further contemplates the maintenance of tubular patency during perfusion. The present invention is also directed to a method for monitoring cold ischemia damage as an indication for timing and dosage of nephrotoxic immunosuppressant agents, e.g., Cyclosporin A. The present invention still further contemplates a device for performing the test of the present invention.

La présente invention concerne une méthodologie fondée sur l'injection à froid d'une solution de conservation colloïdale dans des organes de donneurs, à une pression d'injection sélectionnée, permettant d'éviter la réabsorption tubulaire et la perte d'énergie conséquente. La présente invention concerne également la mesure continue directe du taux de filtration glomérulaire par la mesure de la formation d'urine lors de l'injection à froid. L'invention a aussi pour objet un procédé permettant d'évaluer la perméabilité vasculaire des artérioles afférentes et des artérioles efférentes. L'invention concerne également le maintien de cette perméabilité pendant l'injection. Elle traite aussi d'un procédé permettant de contrôler les lésions dues à l'ischémie froide comme indication de la posologie des agents immunosuppresseurs néphrotoxiques, par exemple, la Cyclosporine A. La présente invention a aussi pour objet un dispositif permettant d'effectuer l'essai selon l'invention.

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