
Effect of IL-18BP on Fractalkine chemokine expression in the kidney tissue of rats with renal fibrosis
WANG Li-Min, LI Chun-Yu, ZHANG Jia-Bin, WANG Yu, CHI Ying-Jiao, YUAN Jing-Wei, ZHANG Ying-Jie
Chinese Journal of Contemporary Pediatrics ›› 2013, Vol. 15 ›› Issue (12) : 1134-1138.
Effect of IL-18BP on Fractalkine chemokine expression in the kidney tissue of rats with renal fibrosis
Objective To study the expression of Fractalkine (FKN) in the kidney tissue of rats with renal fibrosis and the effect of IL-18BP on FKN. Methods Male Wister rats were randomly assigned to sham-operation (n=24), unilatral ureteral obstruction (UUO, n=22), and IL-18 binding protein (IL-18BP) treatment groups (n=23). The UUO model was prepared by unilateral ureteral ligation in the later two groups. The IL-18BP treatment group received an intraperitoneal injection of IL-18BP (0.1 mg/kg) every other day after UUO inducement, for 7 times, while normal saline was administered in the other two groups. Seven or eight rats of every group were sacrificed at 3, 7 or 14 days after IL-18BP or normal saline injections. FKN levels at various times were detected by immunohistochemistry and Western blot. Results Compared with the sham-operation group, FKN levels in the kidney tissue of the untreated UUO group increased significantly at all time points (P<0.01). IL-18BP treatment decreased significantly FKN levels in the kidney tissue at all time points compared with the untreated UUO group (P<0.01). Conclusions IL-18BP treatment may down-regulate the increased FKN levels of the rat kidney tissue caused by UUO, possibly thus delays the occurrence and development of renal fibrosis.
Renal fibrosis / Fractalkine / Interleukin-18 binding protein / Rats