Early immune outcome of retroperitoneal laparoscopic radical nephrectomy for localized renal cell carcinoma: a prospective, randomized study

摘要

Objectives: We evaluated differences in cytokine responses and T-lymphocyte subsets following retroperitoneal laparoscopic and conventional open radical nephrectomies for localized renal cell carcinoma (RCC). Methods: A total of 62 patients with T₁N₀M₀ staged RCC were randomized to either retro-laparoscopic (n = 31) or open (n = 31) radical nephrectomy. Plasma levels of interleukin-1β (IL-1β), IL-6, and tumour necrosis factor-alpha (TNF-α) were measured separately by enzyme linked immunosorbent assay (ELISA) preoperatively and on postoperative days 1 and 5. Levels of CD3+, CD4+ and CD8+ as well as the CD4+:CD8+ ratio were acquired by flow cytometry at the same time points. Results: Levels of IL-1β, IL-6 and TNF-α increased significantly compared to preoperative values in both groups ( p + and CD4+ and the CD4+:CD8+ ratio decreased markedly compared to preoperative values for both groups ( p +:CD8+ ratio in the retro-laparoscopy group ( p + level in the open group ( p + and CD4+ and the CD4+:CD8+ ratio in the retro-laparoscopy group, as well as the level of CD8+ in the open group, returned to about preoperative levels ( p < 0.05). Follow-up ranged from 4 to 14 months postoperatively in all 62 patients with a 100% cancer-specific survival rate in both groups. Conclusions: Retroperitoneal laparoscopic radical nephrectomy is associated with the milder cytokine responses caused by trauma and inflammation and the better preserved distribution of T-lymphocytes.