Abstract:
:Cold preservation has greatly facilitated the use of cadaveric kidneys for renal transplantation, but, clearly, damage occurs during both the preservation episode and the reperfusion phase (following transplantation). The aims of this study were twofold: to develop an in vivo model that was capable of evaluating renal function at early time points following cold preservation, and to evaluate the extent of renal mitochondrial damage that occurs following short periods of cold preservation in vivo. To accomplish these goals, we developed a novel rat model of in vivo renal cold ischemia followed by warm reperfusion (cold I/R) which avoided the complexity involved with transplantation. Briefly, after a right nephrectomy, cold I/R was initiated via pulsatile perfusion (40 minutes) of the left kidney with a cold University of Wisconsin solution followed by 18 hours of warm reperfusion. Cold I/R resulted in significant renal injury, nitrotyrosine production, and inactivation of the key mitochondrial antioxidant enzyme, manganese superoxide dismutase. Furthermore, the activities of the mitochondrial respiratory complexes were significantly reduced following cold I/R. In conclusion, short-term cold I/R results in inactivation of MnSOD, which may lead to the inhibition of mitochondrial complexes and subsequent renal injury. These data suggest that compounds designed to prevent early mitochondrial injury in kidneys that undergo cold preservation would significantly improve renal function and graft survival following transplantation.
journal_name
Ren Failjournal_title
Renal failureauthors
Saba H,Munusamy S,Macmillan-Crow LAdoi
10.1080/08860220701813327subject
Has Abstractpub_date
2008-01-01 00:00:00pages
125-33issue
2eissn
0886-022Xissn
1525-6049pii
790905559journal_volume
30pub_type
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