ObjectiveTo observe the effect of phase Ⅱenzyme inducer 5, 6-dihydrocyclopenta 1, 2-dithiole-3-thione (CPDT) on nuclear factor erythroid 2-related factor 2/antioxidant response element (Nrf2/ARE) signal pathway and oxidative stress in the retina of type 2 diabetic rats. MethodsThirty-five male Wistar rats were randomly divided into two group, normal group and model group. Model group were further randomly divided into two group, diabetic group and CPDT intervention group. There were 8 rats in the normal group and 27 rats in the model group. Diabetic group and CPDT intervention group were given high fat and high sugar diet for 2 months. After 12 hours of fasting, type 2 diabetic rat model was induced by intraperitoneal injection of low dose of streptozotocin. CPDT was added into the high fat and high sugar diets at 1 week after the diabetic model was established in the CPDT intervention group. Eight weeks after CPDT treatment, blood glucose, serum malondialdehyde (MDA), blood lipid, Nrf2 and hemeoxygenase-1 (HO-1) expression were evaluated. ResultsType 2 diabetic model was successfully established in 25 rats, the success rate was 92.6%.The level of blood lipid of diabetic group was higher than those of the normal group (FTC=65.866, FTG=25.441, FLDL-C=38.889; P=0.000). Blood glucose was significant different between all groups (χ2=25.812, P=0.000), and was significantly higher in diabetic group than that in normal group and CPDT intervention group. The serum MDA content was significant different between all groups (F=59.545, P=0.000), and was significantly higher in diabetic group than that in normal group (t=10.523, P=0.000) and CPDT intervention group (t=7.766, P=0.000). The mRNA level of retinal Nrf2 and HO-1 was significant different between all groups (FNrf2=19.503, PNrf2=0.000;FHO-1=9.737, PHO-1=0.001), and was higher in CPDT intervention group than the diabetic group (tNrf2=3.399, PNrf2=0.002;tHO-1=2.167, PHO-1=0.039). The protein level of retinal Nrf2 and HO-1 was significant different between all groups (FNrf2=112.823, FHO-1=119.361; P=0.000), and was higher in CPDT intervention group than the diabetic group (tNrf2=6.203, tHO-1=6.388; P=0.000). Immuno-staining showed that Nrf2 and HO-1 were mainly expressed in retinal ganglion cell layer, inner plexiform layer and inner nuclear layer, and were significant different between all groups (FNrf2=16.206, FHO-1=46.790; P=0.000). They also were higher in CPDT intervention group than the diabetic group (tNrf2=3.172, PNrf2=0.003;tHO-1=6.321, PHO-1=0.000), was higher in diabetic group than that in normal group (tNrf2=2.679, PNrf2=0.011;tHO-1=3.482, PHO-1=0.001). ConclusionCPDT may activate Nrf2/ARE pathway, induce Nrf2 and HO-1 expression, decrease serum MDA and blood glucose, and thus reduce oxidative stress injury in the retina of type 2 diabetic rats.
【摘要】 目的 探讨肾镜结合气压弹道碎石治疗膀胱结石的临床疗效。 方法 分析2004年9月－2011年3月男性膀胱结石患者87例的临床资料。结石直径1.5~6.7 cm，使用肾镜结合气压弹道碎石术治疗，统计手术时间、手术并发症。随访3个月，观察有无尿道狭窄。 结果 所有患者碎石成功，平均手术时间为37 min，无残留结石，无膀胱穿孔、感染性休克、膀胱大出血等并发症；术后3个月随访，经尿道手术者均未发现尿道狭窄。 结论 肾镜下气压弹道碎石术是治疗膀胱结石安全、有效的方法。【Abstract】 Objective To explore the clinical efficacy of pneumatic ballistic lithotripsy via nephroscope in treating patients with bladder stones. Methods We retrospectively analyzed the clinical data of 87 patients with bladder stones from September 2004 to March 2011. The diameter of the stones were ranged from 1.5 to 6.7 cm. The patients underwent peneumatic ballistic lithotripsy via nephroscope. We recorded the operation time and complications, and observed the incidence of urethrostenosis 3 months after the beginning of the follow-up. Results All stones were fragmented and removed successfully. The average operation time was 37 minutes. No residual stone, bladder perforation, infective shock or severe bleeding of the bladder occurred. During the 3-month follow-up, no utethrostenosis occurred. Conclusion Pneumatic ballistic lithotripsy via nephroscope is a safe and efficient technique in treating bladder stones.