Enhanced UV Emission from ZnO on Silver Nanoparticle Arrays by the Surface Plasmon Resonance Effect.

Periodical silver nanoparticle (NP) arrays were fabricated by magnetron sputtering method with anodic aluminum oxide templates to enhance the UV light emission from ZnO by the surface plasmon resonance effect. Theoretical simulations indicated that the surface plasmon resonance wavelength depended on the diameter and space of Ag NP arrays. By introducing Ag NP arrays with the diameter of 40 nm and space of 100 nm, the photoluminescence intensity of the near band-edge emission from ZnO was twofold enhanced. Time-resolved photoluminescence measurement and energy band analysis indicated that the UV light emission enhancement was attributed to the coupling between the surface plasmons in Ag NP arrays and the excitons in ZnO with the improved spontaneous emission rate and enhanced local electromagnetic fields.

Effects of miR-34 on migration and invasion of prostate cancer cells by MSR1 protein / 中国免疫学杂志

Objective:To investigate the effect of miR-34a on the migration and invasion of prostatic cell line through MSR1.Methods:Western blot was used to detect the expression of MSR1 in prostate cancer cell lines.qPCR was used to detect the ex-pression of miR-34a in prostate cancer cell lines.The correlation between miR-34a and MSR1 was examined by double luciferase as-say.Transwell invasion assay was used to detect the effect of miR-34a and MSR1 on the invasion ability of prostate cancer cells.The effects of miR-34a and MSR1 on the fine migration ability of prostate cancer were examined by scratch healing.Results:The expression level of MSR1 in PC3 cells was relatively high by Western blot.The expression level of miR-34a in PC3 cells was relatively low by qPCR.Double luciferase assay showed a direct binding site between miR-34a and MSR1,MiR-34a could regulate the expression level of MSR1,Scaffold Healing Test and Transwell Invasion Test were used to detect the migration and invasion of PC3 cells after overexpressing miR-34a.Overexpression of MSR1 could reverse the inhibitory effect of miR-34a on the migration and invasion of PC3 cells.Conclusion:miR-34a can regulate the migration and invasion of prostate cancer cells through MSR1 protein.

Application of highly selective renal artery occlusion in laparoscopic partial nephrectomy / 中国内镜杂志

Objective To compare the feasibility and safety of laparoscopic partial renal segmental artery occlusion and renal artery trunk interruption for partial nephrectomy. Methods We reviewed medical records of 65 patients with stage T1 renal tumor from October 2013 to February 2017. Among them, 29 cases underwent partial nephrectomy with high selective segmental renal artery occlusion, and 36 cases underwent partial nephrectomy with renal artery trunk occlusion. Then compare the preoperative and postoperative creatinine changes, intraoperative blood loss, warm ischemia time, operation time, hospitalization time and positive margins of the two methods. Results In all the patients, the procedures were done without conversion to open surgeries. The operation time of the renal artery branch block group is shorter than that of the main renal artery block, but the preoperative and postoperative creatinine changes are smaller than those of the main renal artery occlusion group. There was no significant difference between the two groups in intraoperative blood loss, warm ischemia time and positive margins (P > 0.05); There was no significant difference between the two groups in age, body mass index (BMI) and R.E.N.A.L score of renal tumor (P > 0.05). Conclusion For the stage T1 renal tumor, the selective renal artery branch interruption technique has a longer operation time, but the renal tissue has a small ischemic zone and has little effect on the kidney.