IgG deposition in allografts with immunosuppression.
(A) Allografts of cyclosporine-immunosuppressed MCMV D−/R−, D+/R− and D+/R+ recipients were stained with IgG-AF488 at day 14 post-transplant (n=5–6/group). Kidneys from non-transplant C57BL/6 mice (“No Tx”) served as staining controls (left panels, n=3). Representative images of cortex (upper panel) and medulla (lower panel) are shown (40x; white bar=50 μm). (B) Fluorescence immunostaining was quantitated for 10 HPF per kidney using Image J and compared between groups. (C) MCMV− Ig, MCMV+ Ig, or sera from immunosuppressed D−/R−, D+/R− or D+/R+ transplant recipients were analyzed by ELISA for anti-MCMV antibodies at OD450 (O.D). (D) Serologic anti-MCMV antibody levels (O.D.) were correlated with allograft IgG immunostaining for D+/R− and D+/R+ transplant recipients.
* p<0.05; *** p<0.001.