从临床实验科室走向讲台的几点体会

我是在医院检验科工作三年后走上教学岗位的。通过两年的一线教学,我逐渐完成从检验技师到教员的角色转换,并基本站稳了讲台。在教学工作中,通过向老同志学习,我不断提高业务水平,增强职业责任感和自豪感,并把临床工作经验有机地溶入教学中,丰富了授课内容。通过两年的教学,我初步认识到教员二字的含义,也明确了投身医学教育的目标。要成长为一名合格的教员,我有以下几方面的体会。

光动力作用对肿瘤患者外周血红细胞免疫功能的影响

目的观察小剂量光动力作用对肿瘤患者外周血红细胞免疫功能的影响。方法实验于2003-12/2004-04在解放军总医院临床实验科完成。对照组为外周血200μL中加入生理盐水200μL。实验组为200μL外周血加入1mg/L血卟啉200μL后在2mW/cm2红光下照射5s,两组均用Ficoll液分离红细胞,采用红细胞CR1的酶联免疫竞争吸附实验,在分子水平上体外测定实验组及对照组红细胞CR1活性及红细胞粘附的免疫复合物C3b分子含量。结果①实验组的C3b含量(0.1698±0.020)ng显著高于对照组(0.1380±0.020)ng(t=3.211,P<0.01)。②实验组CR1活性(0.2138±0.036)%显著高于对照组(0.1479±0.025)%(t=3.198,P<0.01)。结论小剂量光动力作用可增强肿瘤患者外周血红细胞CR1活性及粘附的免疫复合物C3b分子的表达,促进其免疫粘附功能,有利于循环免疫复合物的清除,增强机体的免疫功能。

Recent Progress in Cartilage Tissue Engineering--Our Experience and Future Directions

Given the limited spontaneous repair that follows cartilage injury, demand is growing for tissue engi- neering approaches for cartilage regeneration. There are two major applications for tissue-engineered cartilage. One is in orthopedic surgery, in which the engineered cartilage is usually used to repair cartilage defects or loss in an articular joint or meniscus in order to restore the joint function. The other is for head and neck reconstruction, in which the engineered cartilage is usually applied to repair cartilage defects or loss in an auricle, trachea, nose, larynx, or eyelid. The challenges faced by the engineered car- tilage for one application are quite different from those faced by the engineered cartilage for the other application. As a result, the emphases of the engineering strategies to generate cartilage are usually quite different for each application. The statuses of preclinical animal investigations and of the clinical translation of engineered cartilage are also at different levels for each application. The aim of this review is to provide an opinion piece on the challenges, current developments, and future directions for cartilage engineering for both applications.