Published in:
01-02-2012
Effect of Donor JNK Signal Transduction Inhibition on Transplant Outcome in Brain Dead Rat Model
Authors:
Lu Chen, Danfeng Xu, Yi Gao, Xingang Cui, Zunguo Du, Qiang Ding, Xiang Wang
Published in:
Inflammation
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Issue 1/2012
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Abstract
Renal grafts from brain-dead donors compared to living donors have a significantly shortened survival time due to heightened renal immunogenicity. The influence of pretreatment with a JNK signal transduction inhibitor on ischemia–reperfusion injury was examined in a renal transplant model using donors from a standardized rat model of brain death. Donors were treated immediately after induction of brain death with a JNK signal transduction inhibitor or saline. Kidney grafts from experimental group and control groups (saline-treated brain dead or living donor grafts) were examined serially up to 7 days post transplantation by morphology, immmunohistology, and real-time PCR. JNK inhibition reduced the intensity of ischemia–reperfusion injury and acute rejection compared to saline treated donors. Likewise, cellular infiltration, mRNA transcription of some representative proinflammatory mediators and MHC-II molecules in the grafts were diminished in the JNK-inhibited donors compared to saline controls. Lewis rats transplanted with kidneys from JNK inhibited, brain-dead BN donors survived significantly longer than rats transplanted with saline treated brain-dead donors. The JNK inhibitor pretreatment of brain dead rats improved donor kidney quality, and improved graft survival.