Abstract
Sixty eight patients who had undergone live related donor renal transplantation (LRD), were evaluated for soluble interleukin-2 receptors (sIL-2R), tumour necrosis factor alpha (TNF-α) and autoantibodies against IgG(Fab')2 and IgG(Fc), at pre- and various post-transplant intervals. Serum sIL-2R levels were significantly elevated in hemodialysed patients awaiting transplantation (mean 259.2 ± 90.5 pmol/L) as compared to healthy volunteers (mean 52.6 ± 16.7 pmol/L). In 96 samples obtained from patients with well-functioning grafts (WFG), the post-transplant sIL-2R levels (135.6 ± 65.4 pmol/L) were significantly lower (p < 0.001) than their pretransplant values. Eight patients with cyclosporin-A (CsA) nephrotoxicity, 14 with reversible acute tubular necrosis (ATN) and 4 patients with partial surgical obstruction, revealed moderate levels (99.0 ± 13.7, 184.1 ± 47.5, 156.7 ± 40.4 pmol/L respectively). On the other hand, 29 patients with acute rejection episodes, 11 with chronic rejection and 8 with infections had significantly higher levels (307.9 ± 89.3, 253.3 ± 68.6,345 ± 110.6 pmol/L), (p < 0.001). TNF-α levels were also raised in rejection and infective episodes but were not statistically significant. Serum anti-IgG(Fab')2 levels were found higher (0.407 OD) in WFG as compared to those with declining graft functions (0.279 OD). On the contrary high pre- and post-transplant anti-IgG(Fc) activity was associated with increased graft rejection and lower survival rate.
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