Abstract
Immunological monitoring of transplant recipients is an attractive concept. Cytokines provide an obvious focus for research, as they are central to the human immune response. This study aimed to identify cytokines whose sequential gene expression differentiated rejectors from non-rejectors immediately following renal transplantation. Forty-five renal transplant recipients (15 rejectors) and 13 living donors were recruited. Total RNA was extracted from the peripheral blood mononuclear cells and reverse transcribed. Cytokine gene expression levels of IL-4, IL-10, TNF-α and TGF-β1 were measured using TaqMan. IL-10 expression increased significantly following donor surgery. IL-4 and TNF-α patterns clearly differentiated between rejectors and non-rejectors. In the rejectors significant increases occurred more than 48 h before clinical graft dysfunction. Negative predictive values were 76% and 80% for IL-4 and TNF-α, respectively. This study has identified two cytokines (IL-4 and TNF-α) whose gene expression patterns differentiate between rejecting and non-rejecting renal transplant recipients making immunological monitoring possible.
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