前列腺素E1对血管内皮生长因子含量的影响及其与肺小动脉病理分级的关系

目的 研究应用前列腺素E1(PGE1)对先天性心脏病合并肺动脉高压(PH)患者血清血管内皮生长因子(VEGF)含量的影响及其与肺小动脉病理分级的关系. 方法 2002年1月至2003年6月共收治先心病合并PH患者53例(MPAP＞20 mmHg),其中有明显紫绀6例(MPAP＞90 mmHg).入院后静脉滴注PGE1 10～15ng/kg*min,每天用药12小时,连续15天.分别于用药0、5、10和15天晨抽取静脉血,采用酶联免疫吸附法(ELISA)测定血清VEGF含量.做肺组织活检,按Heath和Edwards分类进行病理分级,观察肺小动脉的病理改变. 结果病理分级:Ⅰ级9例,Ⅱ级14例,Ⅲ级19例,Ⅳ级5例,≥Ⅴ级 (紫绀者)6例.应用PGE1前,肺小动脉病理分级Ⅲ级时血清VEGF达到峰值,Ⅳ级、特别是≥Ⅴ级后有明显下降的趋势;应用PGE1后,Ⅰ级血清VEGF与用药前比较差别无显著性意义(P>0.05),Ⅱ、Ⅲ级者血清VEGF明显降低(P<0.01),Ⅳ级者有轻度的降低(P<0.05),而≥Ⅴ级患者无明显变化(P>0.05). 结论 PGE1可降低血清VEGF含量, 其降低幅度与肺小动脉病理改变程度有较密切的关系,可作为术前判断肺小动脉病理分级的一个参考指标.     

不同门奇断流术式对门静脉高压症犬食管下段血管再生的影响

Objective To explore the effect on blood vessel regeneration of distal esophagus in ca-nines of portal hypertension with liver cirrhosis after different procedures with paraesophagastrie devascular-ization. Methods Portal hypertension models were produced in canines by subcutaneous injection of 60% CC14 combined with food restriction. Forty eight model canines were randomly divided into 4 groups: group A, traditional paraesophagastrie devascularization;group B, selective paraesophagastric devascularization;group C, paraesophagastric devascularization plus distal esophageal transaction and reanastomosis with sta-pler;group D,control group. Every group had 12 canines which were randomly divided into A1 ,B1 ,C1 ,D1, A2,B2,C2 and D2 groups after the operation. Canines in groups A1 ,B1 ,C1 and D1 were executed at first month after the operation,and those in groups A2, B2, C2 and D2 were executed at the 6th month after the operation. The distal esophagus was segmented when the canines were executed. The upside and downside of the stoma in group C were distinguished and signed as Ca and Cb. Immunohistochemieal methods were used to detect VEGF,CD34 and FVⅧ-Rag,blood vessel-related factors,in lower esophagus. Results The expres-sion levels of VEGF and CD34 MVD,FⅧ-Rag MVD in groups A1 ,B1 and C1 were lower than those in group D1 one month after the operation (P <0.05). All the indices in group B1 were lower than those in groups A1 and Clb,but higher than those in group Cla (P <0.05). The indices in group Cla were lower than those in group C1b (P < 0.05 ). The indices in groups A2 and B2 were higher than those in groups A1 and B1, re-spectively at the 6th month after the operation (P <0.05). They were higer in outer membrane in group C1a than in group C2a (P <0.05). The indices in group C2b were higher than those in group Clb (P<0.05). Conclusion At the first month after operation, the expression of blood vessel-related factors was declined in three different procedures of paraesophagastric devascularization,which indicated that all three different pro-cedures could diminish the vessels in distal esophagus. The effect in group C was most obvious among all groups. At the 6th month after traditional paraesophagastrie devascularization and selective paraesophagastrie devascularization, the expression of blood vessel-related factors in distal esophagus was declined. But there were no significant changes in the expression of blood vessel-related factors in distal esophagus after parae-sophagastric devascularization plus distal esophageal transaction and reanastomosis with stapler. It indicated that the blood vessel regeneration in paraesophagastric devascularization pins distal esophageal transaction and reanastomosis with stapler was inferior to that in other procedures.     

经皮血管闭合器在PCL患者中的应用

采用经皮血管闭合器(ANGIO-SEAL)闭合动脉穿刺部位，效果理想、方法可靠。现将应用经验介绍如下。     

TVP与TURP联合治疗前列腺增生症的体会

目的探讨TVP与TURP联合治疗前列腺增生症的体会.方法本组28例,年龄65～87岁.应用WOLF腔内系列器械,首先采用TVP方法迅速汽化主要影响排尿的前列腺增生组织,然后采用TURP方法切除修整其余增生的前列腺增生组织.结果 28例均取得成功,手术时间40～100min,术中出血少.18例随访3个月,治疗效果满意.结论前列腺增生症病人常伴有多种合并症,用TVP与TURP联合治疗可综合两者的优点,手术出血少、时间短、安全和并发症少,是治疗前列腺增生症的有效方法.     

外伤性颈内动脉海绵窦瘘的血管内栓塞治疗

外伤性颈内动脉海绵窦瘘(TCCF)的治疗一直是神经外科的棘手问题，手术效果并不令人满意.我院自1998年3月至2002年8月对16例TCCF患者采用血管内栓塞治疗，疗效满意，报道如下.     

血管紧张素原与原发性高血压及其相关研究进展

人类血管紧张素原(angiotensinogen，AGT)是一种主要在肝脏合成的大分子球蛋白，分子量在55000—65000，是仅知的天然肾素底物，与a1-抗胰蛋白酶同源，共属丝氨酸超家族。由于AT是维持肾素一血管紧张索系统功能和调节血压的关键物质，关于AGT的大量相关调查和研究己在不同的人群中展开。本文就AGT的分子生物学特性、调节及其与EH的关系做一介绍。     

静脉留置针在儿科的临床应用与护理

静脉留置针在临床上已经广泛应用，它具有减少血管损伤，减轻病人痛苦，尤其在儿科，由于季节性强，病人多，护士相对少，家属对静脉穿刺的成功与否非常重视，大部分家属视患孩如掌上明珠，患孩的痛就是父母的痛。采用静脉留置针既可以减少工作量，提高工作效率，又能避免护患纠纷，提高医疗质量，为护理工作的顺利开展打下良好基础。我科于2003年2月至2004年6月对200例住院需静脉输液的患儿使用BD公司研制的单翼族头皮式套管针，经临床应用，操作简单，效果满意。现报告如下：     

PGE1脂肪微粒球载体与氯沙坦联合治疗糖尿病肾病的疗效分析

氯沙坦对肾脏的保护作用已被大量动物实验及临床上证实。PGE1能通过扩张肾血管增加肾血流及防止肾小球内血栓形成等机制发挥减少蛋白尿，改善肾功能作用。这两种药物作用机理不同。本文旨在观察两者联合应用对糖尿病肾病(DN)蛋白尿和肾功能等各项指标的影响，以寻求治疗DN的更有效的治疗方法。     

直通健康

微循环障碍，是何因，“尿线分叉”就是“前列腺增生”吗，热敷为何加重痛风症状，少女缘何腹部凸出，我怎么会得“网球肘”呢……