一种较好的RNA分离制备方法及其在人胚RNA提取中的应用

以钒基核苷酸复合物为核酸酶抑制剂,从人胚组织中制备总RNA,所得产品几乎不含DNA和蛋白质,经过分离Poly(A)~ mRNA,证明制品有合成cDNA的完整功能,方法比较简捷,适于大量制备以满足分离mRNA 之需,并讨论了此法的优缺点。     

A preliminary study of radioimmunoimaging by 131I-COC183B2 monoclonal antibody in patients with epithelial ovarian cancer.

Monoclonal antibody 131I-COC183B2, developed in our laboratory and proved to fit for human treatment was injected intraperitoneally or subcutaneously in 13 patients. In 8 cases with i.p. injection the disease corresponded with the image, i.e. 3 primary ovarian epithelial cancers showed positive images, 1 ovarian Krukenberg tumor was negative and the other 4 negative images included 1 uterine myoma and 3 ovarian teratomas. In the subcutaneous injection group, 4 cases had ovarian carcinoma, surgery and chemotherapy. Two negative images corresponded with the clinical status-in good health, another negative case had metastatic left supraclavicular lymph node due to ovarian mucinous adenocarcinoma. The last negative image in this group was a case of benign ovarian teratoma which was proved after surgery. The 1 positive case was waiting to be proved by a scheduled third operation. The computer scintigram calculation of T/NT was 5.35 to 13.7. The results suggest that this monoclonal antibody can be used for radioimmunoimaging for the localization of ovarian carcinoma, which is not only helpful for clinical staging and differential diagnosis but is also a good follow-up method.

     

Expression of Anion Exchanger 1 Sequestrates p16 in the Cytoplasm in Gastric and Colonic Adenocarcinoma

p16^INK4A (p16) binds to cyclin-dependent kinase 4/6 and negatively regulates cell growth. Recent studies have led to an understanding of additional biologic functions for p16; however, the detailed mechanisms involved are still elusive. In this article, we show an unexpected expression of anion exchanger 1 (AE1) in the cytoplasm in poorly and moderately differentiated gastric and colonic adenocarcinoma cells and in its interaction with p16, thereby sequestrating the protein in the cytoplasm. Genetic alterations of p16 and AE1 were not detectable. Forced expression of AE1 in these cells sequestrated more p16 in the cytoplasm, whereas small interfering RNA-mediated silencing of AE1 in the cells induced the release of p16 from the cytoplasm to the nucleus, leading to cell death and growth inhibition of tumor cells. By analyzing tissue samples obtained from patients with gastric and colonic cancers, we found that 83.33% of gastric cancers and 56.52% of colonic cancers coexpressed AE1 and p16 in the cytoplasm. We conclude that AE1 plays a crucial role in the pathogenesis of gastric and colonic adenocarcinoma and that p16 dysfunction is a novel pathway of carcinogenesis.     

创伤性浮膝伴血管损伤的早期诊治

目的 探讨创伤性浮膝同时伴同侧血管损伤患者的早期诊断及救治.方法 总结1996年6月～2002年12月收治28例30个浮膝的手术固定方法、血管修复情况及术后治疗和恢复情况.结果 术后伤口一期愈合5例,17例伤口二期行植皮修复,4例胫前骨折部外露二期行皮瓣转移术,截肢2例,保肢成功率92.9%.术后26例经18个月～8年随访,骨折均愈合,下肢功能恢复优良率64.3%.结论 对浮膝损伤患者应高度重视伴有血管损伤可能,早期作出诊断,积极合理治疗,对患者预后至关重要.     

阿米替林合并认知疗法治疗精神分裂症后抑郁的对照研究

目的　评价阿米替林合并认知疗法对精神分裂症后抑郁的治疗效果。方法　将符合CCMD 3诊断标准的 86例精神分裂症后抑郁患者随机分为治疗组和对照组 ,治疗组给予阿米替林合并认知治疗 ,对照组织给予阿米替林治疗 ,疗程 12周。采用汉密尔顿抑郁量表 (HAMD)、简明精神病量表(BPRS)、阴性症状量表 (SANS)评定临床疗效 ,采用副反应量表 (TESS)评定副反应。结果　在治疗的 4、8、12周末 ,HAMD评分治疗组优于对照组 ,显效率分别为 83 95 %和 6 1 90 % (u =5 .83,P <0 0 5 )。结论　阿米替林与认知治疗组结合治疗精神分裂症后抑郁疗效好于单用阿米替林治疗。     

305例尿石成份分析及预防对策

目的研究一种快速、简便的方法对泌尿系结石进行分析,并探讨其防治方法。方法用化学常量法对305例患者的尿石标本进行化学成份测定,并结合临床资料进行分析。结果发现结石发病男性多于女性(比例为3.2∶1),20~50岁多发,上尿路结石多于下尿路结石(5.4∶1)。结石中草酸钙检出率达82%,尿酸盐55.2%,磷酸钙48.6%,磷酸镁铵与碳酸磷灰石则多见于泌尿系感染病例,胱氨酸结石少见。结论化学常量法分析泌尿系结石简便、快捷、准确。结石成份分析对于了解结石成因、预防结石复发具有一定的意义。     

泰素蒂加顺铂治疗进展期NSCLC的临床研究

目的观察泰素蒂加顺铂方案治疗进展期非小细胞肺癌的临床疗效、毒副作用。方法收集可评价疗效的进展期非小细胞肺癌50例,以泰素蒂加顺铂方案进行化疗,泰素蒂75 mg/m2静脉滴注,第1天;顺铂25 mg/m2～30 mg/m2静脉滴注,第2天～第5天,每3周为一个周期,2～3周期后评价疗效和毒副反应并随访。结果50例患者中,总有效率为50.0 %,其中初治病例为53.1 %,复治病例为44.4 %,初复治病例间差异无显著性(P >0.05)。中位缓解期为5个月。中位生存期为9.5个月,1年生存率为61.0 %。毒副反应主要为骨髓抑制,白细胞下降达Ⅲ度、Ⅳ度者52.0 %,血小板下降达Ⅲ度、Ⅳ度者为14.0 %。血红蛋白下降不严重。其他毒副反应还有脱发、过敏反应、水钠潴留、静脉炎、末梢神经炎、口腔炎、腹泻等,但发生率均较低。结论泰素蒂加顺铂方案治疗进展期非小细胞肺癌,特别是复发病例,临床疗效比较满意,毒副反应能够耐受。辅以G蛳CSF可防治重度的骨髓抑制,有较好的临床应用价值。     

Multicentric fibromatosis of familial inheritance

This is an unusual case presentation of a young woman with a clinical history and course simulating juvenile hyaline fibromatosis, but without hyalinization in the stroma. Because of the age of onset, the apparent familial inheritance, the nonaggressive and nonregressive tumor traits, the disease cannot be classified as multicentric fibromatosis. Therefore, we are referring to this case as multicentric fibromatosis with familial inheritance, a previously unreported entity to our knowledge.     

论医药卫生法学专业学生实务能力的培养

加强医药卫生法学专业学生实务能力的培养,是实现医药卫生法学专业培养目标的需要.在教学中,通过运用案例教学法、讨论式教学法,开展模拟法庭、第二课堂活动,组织临床见习、毕业实习等途径,培养即有法律知识又有医药卫生知识的复合型人才.     

Influence of Preparation Factors on the Sustained Release of Nifedipine from Eudragit RL/RS Microspheres

用乳剂—溶剂挥发法制备硝苯地平的丙烯酸树脂缓释微球。微球中药物的释放速度随丙烯酸树脂ＥｕｄｒａｇｉｔＲＬ／ＲＳ比率的增加以及制备时搅拌速率的增加而增大，随内相聚合物浓度的增加及微球粒径的增加而减小，释药５０％所需时间与微球粒径呈良好线性。微球的释药速率也随药物含量的增加（从４．２％到１６．７％）而增大，并快于药物结晶的溶解速率，但药物含量达２６．６％时，微球释药速率明显下降并低于药物结晶的溶解速率。用差热分析和Ｘ射线衍射分析证明，药物含量为４．２，９．４和１６．７％的微球中药物完全是以非晶态分散的，而含药２６．６％的微球中有药物结晶存在。不同微球释药低于７０％时，释放方式均符合Ｈｉｇｕｃｈｉ时间平方根方程。