Is it necessary to shave the pubic and genital regions of patients undergoing endoscopic urological surgery?

To determine whether postoperative urinary infections were related to shaving before undergoing endoscopic urological surgery, 90 patients were randomly assigned to shaving or not shaving. Urinary cultures revealed infection in 10 patients. Half of them had been shaved, suggesting that this practice does not affect the incidence of urinary infections.     

人早孕绒毛组织的体外原代培养和人滋养细胞株的建立

目的:建立快速、有效的绒毛滋养细胞体外原代培养的方法以及建立人滋养细胞株和初步评价。方法:采用胰酶和胶原酶I混合消化法消化绒毛组织,用胰蛋白酶消化传代体外培养,通过光镜、透射电镜和免疫荧光激光共聚焦方法对培养出的细胞进行形态和骨架评价。结果:显微镜下可见细胞呈多边形,细胞平铺生长,有细胞融合后形成的合体滋养层细胞;透射电镜下可见细胞表面的微绒毛丰富;胞质丰富,内质网扩张明显,有丰富的糖原颗粒、髓样小体和明显的脂滴,以及细胞间紧密的桥粒样结构连接;直接免疫荧光双标记染色检测到角蛋白18和波形蛋白均为阳性。结论:采用胰酶和胶原酶I混合消化法可获得较纯的滋养细胞,通过光镜、透射电镜和免疫荧光激光共聚焦检测细胞外形和骨架,确定该体外传至56代的细胞株为滋养细胞株。     

桂希恩精神--艾滋病防治工作中的白求恩精神

在当前中国艾滋病疫情日益严峻的形势下,以武汉大学中南医院桂希恩教授为代表的广大医务工作者,通过实际行动在艾滋病防治工作中继承和发扬了白求恩精神.本文通过桂希恩教授在艾滋病防治工作中的先进事迹,阐述了艾滋病防治工作中的白求恩精神--桂希恩精神的内涵,以及在当前艾滋病防治工作中学习桂希恩精神的重要意义.     

放疗联合免疫检查点抑制剂治疗肿瘤的应用基础

免疫检查点抑制剂单药有效率不足30%。放疗可以促进机体的抗肿瘤免疫应答,通过协同效应或互补机制增进免疫检查点抑制剂的疗效。笔者就放疗联合免疫检查点治疗的应用基础及面临的问题进行深入阐述。     

Epigenética y cáncer colorrectal

The epigenetic and physiological mechanisms that alter the structure of chromatin include the methylation of DNA, changes in the histones, and changes in RNA. A literature review has been carried out using PubMed on the evidence published on the association between epigenetics and colorectal cancer. The scientific literature shows that epigenetic changes, such as genetic modifications may be very significant in the origin of neoplastic disease, contributing both to the development and progression of the disease.