The Receptor Role of Glycophorin A during the Invasion of Erythrocytes by Plasmodium Falciparum

Under the condition of in vitro culture,the effects of glycophorin A(GPA)of human erythrocyte membrane,anti-GPA IgG,α_1-acid glycoprotein,ovomucoid,wheat germ agglutinin,etc.on the invasion of erythrocytes by P.falciparum were observed in this study.The results show that the combination ofGPA with P.falciparum merozoites has high specificity,high affinity and atendency to saturation,and produces specific biological effects.These confirm forthe first time from the characteristics of the ligand-receptor interaction that GPAis a receptor recognized and bound by P.falciparum merozoites.     

气相色谱法测定异硝苯地平

采用气相色谱法，以尼莫地平为内标测定钙拮抗剂异硝苯地平。方法简便快速，结果准确可靠。回收率99.78％，相对标准偏差0.43％，符合定量测定的要求。     

脊柱推拿时咔哒声响的测量技术分析与设计

目的 为研究脊住推拿时所发出咔哒声响，提供一套可采集、定位和分析的检测仪器。方法 在回顾咔哒声响测量技术现状的基础上，分析研究了实现声响测量的技术路线，设计了由时钟脉冲发生器、发送／接收接口、校准波发生器、复合传感器、计算机、测定分析软件以及输出部件等组成的声响测量系统。结果 经初步试验，在40cm的距离上测到了关节发出的咔哒声响，说明技术上基本可行。结论 本仪器可以作为脊柱推拿所致咔哒声响的采集、定位和分析系统使用。     

头孢呋辛酯制备工艺的改进

以头孢呋辛钠为原料，从制备（R，S）-乙酸1-溴乙酯开始。经酯化反应的溶剂沉淀过程无须分离直接制得高纯度非晶型的头孢呋辛酯。本制备方法简便，适于工为化生产。     

葛根对小白鼠免疫功能的影响

从免疫学方面探讨中药葛根的强身健体作用。方法 :用 10 0 %葛根水浸出液定期给小鼠灌胃 ,然后检测小鼠抗体产生能力、淋巴细胞转化率、巨噬细胞吞噬的功能。结果 :用药组小白鼠以上免疫学指标均有显著增强作用 ,与对照组相比有非常显著性差异 (P <0 .0 1)。未见有副作用。结论 :口服葛根可明显增强机体免疫功能。     

经皮冠状动脉腔内支架置入术治疗冠心病

目的:评估冠状动脉内支架置入术的效果。方法:回顾性分析1996年2月～2000年2月我院接受冠状动脉内支架置入术的120例病人的治疗效果。结果:在183处病变共置入支架125只。在未经介入性治疗的病变置入支架(De novo stenting)101只,PTCA结果不理想(suboptimal)置入支架19只,2例PTCA并发夹层,濒临闭塞时紧急置入支架(Bail-out stenting)2只,在再狭窄病变置入支架3只。置入支架平均直径3.00±0.69mm,平均长度18.15±10.26mm。手术即刻成功率98.4％,主要并发症率为1.6％((2例AMI)。结论:冠脉内支架置入术是治疗冠心病的一种安全有效的介入性治疗技术,其成功率高,并发症少。     

In situ hybridization of prostate-specific antigen mRNA in human prostate.

Prostate-specific antigen (PSA) mRNA was detected by in situ hybridization utilizing a 428 base pair [35S]-labelled cDNA probe from the 3' noncoding region of the PSA gene. Thirty six fresh surgical specimens were collected from patients undergoing radical retropubic prostatectomy for carcinoma of the prostate. Quantitative analysis of the levels of PSA mRNA in both the benign and malignant tissues was performed using an IBAS 2000 Image Analysis System. The results of this study demonstrated that there is a significant decrease in the expression of PSA mRNA in the carcinoma tissue when compared to the benign epithelium. The average binding (number of silver grains/1 x 10(4) microns. 2) for 20 specimens of malignant epithelium was 475 +/- 161 and 586 +/- 140 for 16 specimens of benign epithelium (p less than 0.05). Eleven patients had both benign and malignant tissue from the same surgical specimen available for study. From these paired specimens, the PSA mRNA expression was also significantly reduced in the malignant epithelium when compared to the benign epithelium, 445 +/- 162 and 588 +/- 135 respectively (p less than 0.005). The PSA protein was detected using a monoclonal antibody to PSA with an immunohistochemical staining technique. The PSA protein expression paralleled the expression of the PSA mRNA in the majority of the tissue sections. Many of the tumor specimens showed a heterogeneous expression of PSA, whereas all of the benign epithelium had a uniform high level of PSA expression. In conclusion, PSA mRNA and protein are located only within the glandular epithelial tissue, the expression of PSA protein parallels that of the PSA mRNA, and both the PSA protein and PSA mRNA are significantly decreased in the malignant epithelium when compared to benign prostatic epithelium.     

伽玛刀治疗垂体大腺瘤临床分析(附30例报告)

目的 研究伽玛刀治疗垂体大腺瘤的效果及影响疗效的因素。方法 30例垂体大腺瘤病人用1．0T磁共振定位，Gamma-plan计划系统规划，等剂量曲线45％～60％(平均49．7％)，周边剂量12～35Gy(平均22.9Gy)，中心剂量24～70Gy(平均45．4Gy)．Leksell伽玛刀实施放射外科治疗。分析治疗后垂体大腺瘤病例，总结其疗效和影响疗效的因素。结果 随访12～60个月，平均28个月，肿瘤完全消失6例(20％)，肿瘤缩小19例(63．3％)，无变化5例(16．7％)；19／20(95．5％)功能性垂体腺瘤内分泌症状改善，临床症状好转，1例过早绝经(年龄36岁)；5／10(50％)无功能性垂体腺瘤体积缩小．症状改善。结论 伽玛刀对于垂体大腺瘤仍是一种有效的治疗方法，其疗神与腺瘤的举类型、体积、照射剂量、剂量体剂、MRI信号特征密切相姜。     

广东省结核病流行菌株研究

目的：从分子流行病学的角度探讨广东省结核分支杆菌菌株流行的分布。方法：构建广东省74株临床分离的以RFLP为基础的结核分支杆菌的IS6110 DNA指纹图谱技术，确诊结核分支杆菌菌株的流行分布。结果：24．3％（18／74）的结核菌株的IS6110 DNA指纹相似值在1－0．65之间，鉴定结果为它们均是“北京家族”结核分支杆菌菌株。结论：广东省结核菌株流行主要存在着遗传关系接近，在基因水平上相关程度较高的“北京家族”结核分支杆菌菌株，且该家族菌株正以一定的比例在我省流行。