Classification Tree Model Analysis on Risk Factors of Diabetic Kidney Disease to Progress to ESRD for CKD3-4 Stages Patients / 中山大学学报(医学科学版)

@#【Objective】To analyze the risk factors of progression to end-stage renal disease（ESRD）in patients with diabetic kidney disease（DKD），and screen the high-risk population for early prevention.【Methods】The clinical data of 231 patients with diabetic nephropathy in our hospital were collected and followed up for 3 years. According to whether ESRD occurred，they were divided into non-progressing ESRD group（133 cases）and ESRD group（98 cases）. Classification tree model was used to analyze the risk factors related to ESRD，and the high-risk population was screened by node gain analysis.【Results】Four important explanatory variables were screened out by the classification tree model from the candi⁃ date variables related to early renal damage，including apolipoprotein B（ApoB），gender，diabetic retinopathy，systemic blood pressure（SBP）. ApoB level was an important factor for DKD progression. For DKD patients with the chronic kidney disease （CKD）3~4 stageswith ApoB> 1.14 mmol/L，theprobabilityofprogression toESRDfor 3 yearswas 75.0 %，and ifat the same time with diabetic retinopathy，the probability was 79.7 %.【Conclusion】The classification tree model can analyze the risk factors of progression to ESRD in DKD patients effectively，to identify the characteristics of high-risk populations.

Effect of polydatin on miR-214 expression and liver function in ApoE-/- mice / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the effect of polydatin on the expression level of miR-214 and liver function in atherosclerotic mice.</p><p><b>METHODS</b>Forty male ApoE(-/-) mice were randomly allocated into 4 groups (n=10), namely the model group, low- and high-dose polydatin groups, and simvastin group, with 10 male C57BL/6J mice serving as the normal control group. Mouse models of atherosclerosis were established by feeding the ApoE(-/-) mice with a high-fat diet. After 12 weeks of treatment, blood levels of glucose, lipids, AST, and ALT and the contents of T-SOD and MDA in the liver tissue were detected. The pathologies of the liver were examined with HE staining, and miR-214 expression in the liver was detected using quantitative real-time PCR.</p><p><b>RESULTS</b>Compared with the normal control mice, the mice in the model group showed significantly increased blood glucose, serum TC, TG, LDL-C, ALT, and AST levels, and MDA contents in the liver (P<0.01), with significantly decreased serum HDL-C level and SOD and miR-214 levels in liver (P<0.01). Polydatin treatment significantly ameliorated such changes in blood glucose, serum ALT, AST, TC, TG, LDL-C, and HDL-C levels, and MDA, SOD, and miR-214 contents in liver tissue (P<0.05).</p><p><b>CONCLUSION</b>s Polydatin can reduce blood glucose and lipid levels and protect the liver function in atherosclerotic mice possibly by up-regulating the expression of miR-214 and T-SOD and down-regulating MDA in the liver.</p>