Protective effects of PG490-88 on chronic allograft rejection by changing intragraft gene expression profiles

被引:5
|
作者
Fisniku, O
Pan, F
Wynn, C
Erickson, LM
Crews, G
Jang, MS
Sudo, Y
Tamura, K
Kobayashi, M
Benediktsson, H
Jiang, H
机构
[1] Northwestern Univ, Evanston Northwestern Healthcare, Fujisawa Res Inst Amer, Evanston, IL 60201 USA
[2] Northwestern Univ, Evanston Northwestern Healthcare, Dept Med, Evanston, IL 60201 USA
[3] Fujisawa Res Inst Amer, Evanston, IL USA
[4] Univ Calgary, Foothills Hosp, Dept Pathol, Calgary, AB, Canada
关键词
D O I
10.1016/j.transproceed.2005.02.084
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Our previous study showed that PG490-88 effectively ameliorated both functional and histological changes of chronic rejection in the rat. In this experiment, we investigated the intragraft gene expression profiles of PG490-88 under successful prevention of chronic rejection in rat kidney allografts. Kidneys of F344 rats were transplanted into bilaterally nephrectomized LEW recipients. Recipients with a brief course of low-dose FK506 (1 mg/kg per day for 10 days) were dosed with PG490-88 0.5 mg/kg per day, which was predetermined and defined as the effective dose of preventing chronic allograft rejection in this model, for 90 days after grafting. Kidney grafts were harvested on day 90 after transplantation and subjected to gene expression analysis by real-time RT-PCR. Overall, the expression levels of all genes tested were upregulated in the brief course of low-dose FK506 control. PG490-88 treatment exhibited significant inhibition of intragraft m RNA levels of iNOS, IL-6, and perforin and marginal downregulation of IL-2, IFN gamma, IRF-1, TNF alpha, and TGF beta. There was no change in IL-10, granzyme B, and PDGF alpha, when compared to the brief course of low-dose FK506 control. These results suggested that downregulation of multiple intragraft gene expression by mainly suppression of iNOS, IL-6, and perforin might be responsible for successful prevention of chronic kidney allograft nephropathy by PG490-88 in rats.
引用
收藏
页码:1962 / 1964
页数:3
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