Author Affiliations
Abstract
1 Key Laboratory for the Physics &
2 Chemistry of Nanodevices, School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
We investigate the activation of living monocytic U937 cells induced by interleukin-6 (IL-6) at the single cell level. We employ home-built Raman tweezers to measure the Raman spectra of living U937 cells with and without IL-6 at the single cell level. Raman peaks of amide III, amide I, DNA backbone, as well as guanine and adenine in U937 cells, change at 1312, 1652, 1090, and 1576 cm ?1, respectively, shortly after IL-6 is added in the medium. The change is a dynamic temporal process. In the activation process of U937 cells induced by IL-6, the protein signals recover in 20 min, while the nucleic acid signals continue to increase for 20 min. The results reveal that the biochemical cascades of activation in signal transduction induced by IL-6 can be investigated in situ at the single cell level.
拉曼光镊 拉曼光谱 白细胞介素-6 U937细胞 140.0140 Lasers and laser optics 170.0170 Medical optics and biotechnology 180.0180 Microscopy 190.0190 Nonlinear optics Chinese Optics Letters
2010, 8(10): 1015
第四军医大学西京医院泌尿外科,西安市,710033
目的评价隧道式经尿道前列腺电切术(Tu-TURP)联合插入半导体激光前列腺组织内凝固(ILC)手术对机体的损伤程度,为临床应用该手术方法治疗高危患者前列腺增生症提供理论依据.方法 1999年12月至2001年1月第四军医大学西京医院泌尿外科确诊的高龄前列腺增生症患者162例.Tu-TURP+ILC组36例,TURP组86例,ILC组40例.用酶联免疫吸附法(ELISA)检测3组患者手术前及手术后第1、2、4和6天血清白细胞介素-6(IL-6)和C-反应蛋白(CRP)水平,并计算手术时间及术中出血量.结果 3组患者术前血清IL-6和CRP水平差异无显著意义.术后第1、2天,IL-6水平TURP组＞Tu-TURP+ILC组＞ILC组,TURP组与Tu-TURP+ILC组或ILC组比较差异有显著意义(P＜0.05);Tu-TURP+ILC组与ILC组比较差异则无显著意义(P＞0.05);CRP水平TURP组＞Tu-TURP+ILC组＞ILC组,3组间两两比较,差异均有显著意义(P＜0.05).手术时间及术中出血量TURP组＞Tu-TURP+ILC组＞ILC组(P＜0.05).结论隧道式经尿道前列腺电切术与插入式半导体激光前列腺组织内凝固术联合治疗前列腺增生对机体的创伤较小,可用于高危前列腺增生症的治疗.
前列腺增生症 手术 白细胞介素-6 C-反应蛋白 激光
