腹膜透析腹膜炎动物模型不同时相腹膜溶质转运及IL—8变化

目的：研究腹膜透析腹膜炎动物模型不同时相腹膜溶质转运及IL－8变化，了解腹膜透析溶质转运机制。方法：将42只新西兰大白兔随机分为实验组（5min,24h和48h组）和对照组，建立腹膜透析腹膜炎模型。分别测定各时间点透析液和血肌酐、葡萄糖、总蛋白、白蛋白，同时测定透析液白细胞介素－8的浓度，分别计算肌酐、总蛋白、白蛋白D／P值和葡萄糖Dn/Do值。结果：24h组120min,240min,360min时白蛋白D／P值与对照组比较差异有显著性（P＜0．05）；48h组各时间点透析液内总蛋白D／P值与对照组比较差异有显著性（P＜0．05）；48h组各时间点葡萄糖Dn/Do值和肌D／P值与对照组比较差异有显著性（P＜0．01）。实验组各时间点透析液内白细胞数、中性粒细胞数及IL－8水平升高，与对照组比较差异有显著性（P＜0．05）。48h组各时间点透析液内IL－8水平与总蛋白D／P值明显相关（P＜0．05），60min以后各时间点透析液内IL－8水平与白蛋白D／P值显著相关（P＜0．01）。结论：腹膜炎不同时相溶质转运不同，IL－8和白细胞均可影响腹膜透析时溶质转运。

Transperitoneal transport of solute and IL-8 in dialysis-related peritonitis]

OBJECTIVE: To study the changes in solute transperitoneal transport and the IL-8 level at different time phases in dialysis-related peritonitis so as to understand the mechanism of solute transperitoneal transport. METHODS: Forty-two New Zealand white rabbits were randomly divided into three experimental groups (5 min, 24 h, and 48 h groups) and a control group. The rabbit model of peritoneal dialysis-related peritonitis was created. The plasma and effluent concentration of creatinine, glucose, total proteins, and albumin were determined respectively; the D/P values of creatinine, total proteins, and albumin, and the Dn/D0 values of glucose were calculated respectively. RESULTS: There was a significant difference in the D/P values of albumin at 120, 240, and 360 min between the 48 h group and the control group (P < 0.05); the D/P values of total proteins significantly increased at different time points in the 48 h group compared with the control group (P < 0.05); there was a significant difference in the creatinine D/P values and glucose Dn/D0 values between the 48 h group and the control group (P < 0.05). Compared with the control group, IL-8 and WBC obviously increased in the 48 h group (P < 0.05); the effluent IL-8 levels at different time points were positively correlated to the D/P values of the total proteins (P < 0.05). The effluent IL-8 levels at different time points after 60 min were positively correlated to the D/P values of albumin (P < 0.05). CONCLUSION: The mechanism of transperitoneal transport of the different molecule solutes varies. Both IL-8 and WBC can influence solute transperitoneal transport in peritoneal dialysis-related peritonitis.