Er:YAG激光桩道预处理的研究进展

本文回顾了Er:YAG激光活化根管冲洗技术的最新研究进展,包括光子诱导光声流(photon initiated photoacoustic streaming,PIPS)技术和冲击波增强发射光声流(shock wave enhanced emission photoacoustic streaming,SWEEPS)技术,探讨Er:YAG激光预处理桩道的原理、优点以及对纤维桩粘接强度的影响,以期为临床选择适宜的桩道处理方法提供新思路。     

EVALUATION OF IMMUNOHISTOCHEMICAL DIAGNOSIS OF RHABDOMYOSARCOMA

Objective To evaluate the sensitivity and specificity of regularly used immunohistochemical markers, including Vimentin (Vim), Desmin (Des), Myoglobin (MG), Myosin (MS), Smooth-muscle actin (SMA) and Sarcomeric actin ( Sr-A ) , in the diagnosis of rhabdomyosarcoma (RMS). Methods After resection, 24 RMSs and other childhood tumor specimens were fixed in 10% neutral-buffered formalin and embeded in paraffin. The immunohistochemical staining was performed by LSAB procedure. Heat-induced epitope retrieval of Des, MS, Sr-A was processed in order to enhence positive rate and positive strength. Results Vim, MG, MS, Des, Sr-A, SMA were arranged in the order of sensitivity from higher to lower. About specificity, Sr-A, Des, SMA, MG, Vim standed in a sequence from higher to lower ( the data of MS is insufficient) ; Des, MG, Sr-A possessedhigher experimental efficiency, followed by SMA, Vim in a succession. Conclusion Vim and MG are of the higher sensitivity but lower specificity. On the reverse, Sr-A and Des hoM the better specificity but lower sensitivity. So the combination of multiple antibody reactions shouM be considered to improve the diagnostic ability in poorly differentiated RMS. According to the result of experimental efficiency, we suggest that the combination of Des, MG and Sr-A can make it possible to diagnose the majority of RMS clearly.     

阴盛阳衰：当代性爱的倾斜

阴盛阳衰：当代性爱的倾斜致诚在当今伊甸园中，那么，没有性高潮体验的女人们会怎样呢？现在似乎流行一种解决方法就是“搞男人”，于是婚外恋时尚流行。这些女人认为得不到性生活真正高潮的享受，唯一的办法Ｘ是找可以得到高潮的理想的男人．年届不惑的陈某与琴结婚已有...     

中医知识通俗讲座

第十八讲话说中药中药是近代名词,古称本草。中药的品种繁多,药名也很复杂,但饶有兴趣。有以产地命名的,也就是“道地药材”,如产于山西绵山的绵黄芪,产于四川的川黄连;有以性能命名的,如专治诸风的防风,治眼病的决明子;有以形态命名的,如形似乌鸦头的乌头,其形弯弯如钩的钩藤;有以颜色命名的,如红花、紫草;有以气味命名的,如丁香、苦参;有以入药部分命名的,如桃仁、葛根;有以生长特性命名的,如寄生在桑树上的桑寄生,夏至后花叶枯萎的夏枯草;有以发现者命名的,如何首乌、徐长卿;还有一些药系从外国引进的,有的     

紫杉酚的抗癌作用

一、研制经过紫杉酚(Taxol)为从短叶紫杉中提取出的一种生物碱,本品为白色结晶,几乎不溶于水,亦难溶于其他溶剂,现用的溶剂为乙醇与 Cremophore EL 组成的一种合剂。本品含于短叶紫杉的针叶、树皮及树根中,世以树根中含量最高,因此提取本品时必须伐倒树木,由于此树生长地区有限,因而药源供给受限,这亦是该药临床研究进展缓慢的主要原因。     

根据地区小儿集体尿检结果制订肾疾病普查计划

根据地区小儿集体尿检结果制订肾疾病普查计划饭岛一诚等１９７４年，日本文部省指令在全国学校开始尿检。随着尿检的进行，得以认识到无症状发病取较长时间经过，进展为肾功衰竭的这类慢性肾炎的初期表现及进展过程，进而认为即使是慢性肾炎，早发现、早治疗还是可以防止...     

肝癌的治疗现况

70年代前期,肝癌患者施行肝切除术很少且效果不理想,后期由于术中引入超声波等各种方法,其疗效有了显著提高,现可对肝癌复发进行再切除。对不适合手术的肝癌患者可采用肝动脉栓塞术(TAE)和经皮乙醇注入等疗法。随着影像诊断的进步和普及,可发现小肝细胞癌及类似肝癌的病变。本文就肝癌的手术疗法及非手术疗法进行概括性叙述。肝切除术