The effect of Pentoxifylline (PTX) on type 1 diabetes was investigated by means of the studies on the expressions of cytokine mRNA in pancreas and the Fas-FasL on islet cells of NOD mice. NOD mice were treated with PT...The effect of Pentoxifylline (PTX) on type 1 diabetes was investigated by means of the studies on the expressions of cytokine mRNA in pancreas and the Fas-FasL on islet cells of NOD mice. NOD mice were treated with PTX from 4-6?wk, and then from 8-12?wk. After treatment, it was found that the incidence of diabetes in NOD mice at ages of 30?wk was reduced to 25% in group of mice treated with PTX, in comparison to 73.3% in case of mice injected with PBS, and the degree of insulitis in the PTX treated mice was lower than that of the PBS injected mice. RT-PCR analysis revealed down-regulatory effect on the expressions of IFN-γ and TNF-α mRNA in PTX treated mice, but there was no any effect on the expression of IL-10. As to the expression of Fas, there was marked decrease in the mean cytoplasmic integral optical density (IOD) in PTX treated mice, but there was little difference between PTX and PBS groups in the expression of FasL. These results indicated that PTX could prevent the development of diabetes in NOD mice, which might be related to the regulation of Th1/Th2 imbalance and the decreased expression of Fas in islet cells.展开更多
文摘The effect of Pentoxifylline (PTX) on type 1 diabetes was investigated by means of the studies on the expressions of cytokine mRNA in pancreas and the Fas-FasL on islet cells of NOD mice. NOD mice were treated with PTX from 4-6?wk, and then from 8-12?wk. After treatment, it was found that the incidence of diabetes in NOD mice at ages of 30?wk was reduced to 25% in group of mice treated with PTX, in comparison to 73.3% in case of mice injected with PBS, and the degree of insulitis in the PTX treated mice was lower than that of the PBS injected mice. RT-PCR analysis revealed down-regulatory effect on the expressions of IFN-γ and TNF-α mRNA in PTX treated mice, but there was no any effect on the expression of IL-10. As to the expression of Fas, there was marked decrease in the mean cytoplasmic integral optical density (IOD) in PTX treated mice, but there was little difference between PTX and PBS groups in the expression of FasL. These results indicated that PTX could prevent the development of diabetes in NOD mice, which might be related to the regulation of Th1/Th2 imbalance and the decreased expression of Fas in islet cells.
