Applicability of prostaglandin E1 indirect portal vein angiography in patients with portal hypertension.

The imaging quality of the portal vein was obviously improved with prostaglandin E1 (PGE1) indirect portal vein digital subtraction angiography (DSA) in 23 cases. The time-density curve showed that the occurrence rate of opposite hepatic blood flow of splenic vein (SV) was the highest (17.4%). The total visualization rate of the left gastric vein (LGV) was 78.3%, and the visualization rate of the short gastric vein (SGV) was 36.4%. 38.9% of the LGV and all the SGV were visualized with indirect portal vein DSA through SA. Indirect portal vein angiography through superior mesenteric artery and that through splenic artery were of equal importance. In portal hypertension patients with hemorrhage of the digestive tract, when LGV and SGV could not be visualized in PGE1 indirect portal vein DSA, the possibility of non-varices vein bleeding should be considered. When opposite hepatic blood flow with obvious dilation appeared in LGV and SGV, devascularization of the pericardial blood vessels would be justifiable.     

BAEP功率谱取样时限和功率谱密度意义的探讨

ＢＡＥＰ功率谱取样时限和功率谱密度意义的探讨游国雄，李翎，毛海利，贾启德当前脑干听觉诱发电位（ＢＡＥＰ）的功率谱分析（ＰＳＡ）存在两个问题：①采样时间与时域图形（ＴＤＣ）一样，自０～１２０ｍｓ，包括了Ⅰ波前的耳蜗电位成分和不稳定的、也非脑于源的Ⅵ、Ⅶ...     

生物人工肝研究进展(文献综述)

随着相关理论与技术的发展 ,生物人工肝脏的研究取得了长足的进步。本文就近年来的研究进展进行综述     

升华丸治疗溃疡性结肠炎82例小结

目的：研究升华丸的制备及用于治疗溃疡性结肠炎(uc)的临床疗效。方法：药材按处方比例制备成水泛丸。口服每次6g，每日2次，用于临床。结果：治疗溃疡性结肠炎82例，总有效率97．6％。结论：本品制备工艺可行，质量可靠，疗效肯定。     

超声洁治联合药物治疗牙周病

超声洁治联合药物治疗牙周病温建华毛长河马永健闫文娟１９９５－０１～１９９５－１２用超声洁治联合药物治疗牙龈炎、牙周炎、牙周脓肿１２５例，年龄１４岁～６０岁，病程１年～１０年。随机分为２组，单日给予超声洁治联合药物治疗，其中牙龈炎６０例，牙周炎５０例，...     

基因重组人骨形成蛋白—2

为了给临床骨缺损提供理想的修复材料，人们积极研究利用基因工程技术在原核细胞或真核细胞中表达基因重组人骨形成蛋白－２（ｒｈＢＭＰ－２），ｒｈＢＭＰ－２与牛骨中提取的骨形成蛋白（ＢＭＰ）具有相似的生物学活性，均能在异位诱导骨，软骨形成，但两者在诱导形成的骨组织结构上一定差异，ｒｈＢＭＰ－２可以与胶原，珊瑚／胶原，无活性脱矿骨基质或聚乳酸／聚乙醇酸共聚物等载体材料合成ｒｈＢＭＰ－２复合人工骨，共同用于骨     

迟发性肝破裂10例

迟发性肝破裂是肝脏破裂后形成包膜下血肿，或被大网膜及凝血块填塞，暂时不引起腹腔内出血的一种特殊型肝破裂，由于本病具有一定隐匿性，易被疏忽，易延误诊治造成严重后果．本组就IO例病例报告如下。1临床资料本组男8例女2例。年龄在25～53岁。其中合并肋骨骨折7例。伤后即入院治疗者6例，伤后于院外观察一段时间后再入院者4例，间隔时间为18h至30d之间，其中2例因就诊较迟而死亡。伴有发热8例，伴黄疽者3例，伴转氨酶升高者6例。治疗方法其中8例及时发现施行手术治疗，另2例未能及时手术即已死亡。2结果10例中8例手术患者均获治愈，2例…     

Zona Pellucida Induces Activation of Phospholipase A2 During Acrosomal Exocytosis in Guinea PigSpermatozoa

Objective To investigate whether PLA2 is involved in ZP-stimulated acrosomal exocytosis,if Ca^2 is required for activation of PLA2,and sigal transduction pathways modulating PLA2. Methods Guinea-pig spermatozoa were capacitated and labeled in low Ca^2 medium with [^14C]choline chloride or [^14C] arachidonic acid,and were then exposed to millimolar Ca^2 and various reagents and stimulated with ZP. Results Precapacitated spermatozoa exposed to millimolar Ca^2 and stimulated with ZP experienced increases in arachidonic acid(AA)and lysophosphatidylcholine (lysoPC) and a parallel decrease in phosphatidylcholine (PC);these chages are indicative of PLA2 activation.Simulation with ZP also led to acrosomal exocytosis in a high proportion of spermatozoa. Lipid changes and exocytosis were prevented if spermatozoa were exposed to aristolochic acid,a PLA2 inhibitor, before treatment with ZP.Stimulation with ZP in medium without added Ca^2 ,or in medium with millimolar Ca^2 and EGTA or La^3 resulted in no lipid changes or exocytosis. Pretreatment with pertussis toxin,a G1 protein inhibitor, before stimulation with ZP,blocked the release of AA and lysoPC and acrosomal exocytosis.Exposure of spermatozoa to the DAG kinase inhibitor R59022 before ZP stimulation led to a significant increase in the generation of lysoPC and exocytosis.Conclusion These results indicate very strongly that PLA2 plays an essential role in ZP-induced exocytosis in spermatozoa, that PLA2 activation requires Ca^2 internalization,and that it is regulated by signal transduction pathways involving G proteins and DAG.     

卡维地洛治疗慢性心力衰竭疗效观察

我院自2003～2005年在常规抗心力衰竭治疗的基础上加用β受体阻滞剂卡维地洛治疗慢性充血性心力衰竭(CHF)40例,取得了较好的临床疗效,现报道如下。