To observe the influence of thalidomide on tumor necrosis factor-a (TNF-α) of spontaneous type-2 diabetes rat (kk-Ay rat) model, and to explore the clinical value of TNF-a mediated inflammation approach to improve the injury on epithelial cell of kidney tubules. There are 30 kk-Ay rates being chosen to establish the Diabetic Nephropathy model and divided into thalidomide group and the model control group, 15 pieces for each group respectively. The levels of TNF-α, IL-1β, interleukin -6 (IL-6) and interleukin -18 (IL-18) of kk-Ay in the thalidomide group and the model control group were both at a higher level before treatment, but the difference was not statistically significant (P >0.05); The levels of TNF-α, IL-1β, interleukin -6 (IL-6) and interleukin -18 (IL-18) in kk-Ay rats 8/10/12 weeks after the treatment in the thalidomide group were significantly decreased, with statistically significant differences compared with the model control group (P < 0.05). The histopathological changes of kidney tubules epithelial cell injury on rats were observed through dissection. Thalidomide will effectively lower TNF-α and IL-1β expression levels in kk-Ay rat models, reduce inflammatory response, and thus improve damage on kidney tubules epithelial cell, which is worthy of further exploration and application.
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