SEROLOGICAL RESPONSES TO CYTOMEGALOVIRUS DURING RENAL TRANSPLANT REJECTION

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Abstract
We studied the role played by CMV in kidney transplant rejection by recording serological responses to CMV replication in cadaver graft recipients and recording clinical graft rejection by monitoring acute changes in renal function and the appearance of antidonor lymphocyte antibody (anti-Dab). If CMV plays a significant role in rejection, clinical rejection should correlate with CMV activity; if CMV does not play a role, clinical rejection would be likely to correlate with anti-Dab but not necessarily with CMV activity. We selected retrospectively 18 rejectors and 18 nonrejectors by clinical criteria and assayed for anti-Dab (by fluorescence-activated flow cytometry) and CMV antibody (by complement fixation and Western blot for IgG and IgM) over a 3-6-month period after transplantation. Primary CMV infection occurred in 8 of 12 (67%) CMV seronegative graft recipients and reactivation or reinfection occurred in 16 of 24 (67%); 12 of 14 (86%) rejectors developed anti-Dab compared with 2 of 18 (11%) nonrejectors (P less than 0.00001). Active CMV infection occurred in 11 of 18 (61.1%) rejectors and 13 of 18 (72.2%) nonrejectors (P = 0.36), and in 8 of 15 (53.3%) of those who developed anti-Dab and 12 of 17 (70.6%) of those who did not (P = 0.26). The results show no evidence to link CMV activity with kidney graft rejection.

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