X-Message-Number: 9532 Date: Tue, 21 Apr 1998 11:02:13 -0700 (PDT) From: Doug Skrecky <> Subject: cryopreservation of kidney Authors Fahy GM. Ali SE. Institution Transfusion and Cryopreservation Research Program, Naval Medical Research Institute, Building 29, 8901 Wisconsin Avenue, Bethesda, Maryland 20889, USA. Title Cryopreservation of the mammalian kidney. II. Demonstration of immediate ex vivo function after introduction and removal of 7.5 M cryoprotectant. Source Cryobiology. 35(2):114-31, 1997 Sep. Abstract The objective of the present study was to determine whether rabbit kidneys could be perfused with a 7.5 M vitrification solution (VS4, which vitrifies under applied pressure) without loss of function. To answer this question, kidneys were perfused with VS4 using a computer-based machine to gradually raise and lower concentration and then attached to the aorta and vena cava of a perfusor rabbit using an apparatus that permitted renal blood flow and renal function to be measured. About half (6/13) of the kidneys so evaluated resumed substantial immediate function after a transient period of severely reduced blood flow. Loss of function did not occur if cryoprotectant concentration was limited to 3.8 M. The loss of function produced by VS4 could be partially reproduced by artificially limiting blood reflow in control kidneys to simulate the transiently low flows caused by VS4 exposure. These results provide the first evidence that both the parenchyma and the vascular system of a sensitive mammalian organ can survive exposure to a vitrifiable concentration of cryoprotectant. Copyright 1997 Academic Press. Rate This Message: http://www.cryonet.org/cgi-bin/rate.cgi?msg=9532