表达谱基因芯片筛选体外循环前后心肌细胞因子的变化

Objestive Systemic inflarmmation may be triggered by injury, hypothermia, ischemia-reperfusion and the contact of the blood with foreign body during cardiopulmonary bypass (CPB). To determine the application values of gene chip technique in the clinical practice and the study of cardiovascular stagery, as well as to provide clues to the study of inflammatory responess during CPB, microarry for gene expression profiles was used to identify the differences in the gene expression of myocardium between pre-and post- CPB. Methods Six adult patients who underwent CPB from March to May in 2003 were involved. Samples of right atrium were col- lected before and at immediate end of CPB. BD AtlasTM cDNA Expression Arrays was used to identify the differences in the gene ex- pression of cytokines. The results were compared with that of semi-quantative RT-PCR. Resellts The mean age of 6 patients (5 males and 1 female) was (32.67± 11.72) years. The baseline heart function was gradeⅡin 3 cases and grade Ⅲ in 3 other cases. The baseline left ventricular ejection fraction(LVEF)was (58.17±7.91)%. The mere duration was (91.67±43.88) minutes for CPB and was (58.67±43.46) minutes for aorta blocking. The minimum nasopharynx/rectal temperture was (29.37±1.90)℃/ (32.15±1.52)℃. Gene expression profiles of cytokines in the myocardium pre- and post-CPB were analysed successfully. The ex- pression of IL-6, IFN-γ,Wnt5a, TNFRSF1B, a member of tumor necrosis factor receptor superfamily, PIGF and MFNG in the myo- cardium were unpregulated after CPB. Conclusion Microarray technique is applicable in the study of cytokines changes dying CPB. cDNA microarray identified pleliminarily the differences in the gene expression between pre- and post-CPB. These genes may be in- valved in inflammation and other psthophysiological responses incuced by CPB. The myocardiym is probably one of the major sources of cytokines during CPB. Further study may be helpful in understanding the llngthe development of inflammation during CPB, and eventually, reducing the post-operative complications.     

常温体外循环下采用缺血预调行心肌保护的研究

为了探讨常温体外循环下采用缺血预调行心肌保护的研究,通过建立犬的常温体外循环全心缺血预调模型,旨在探讨心内直视手术缺血预调保护心肌的可能性。预调组采用升主动脉阻断5分钟,放开10分钟,反复三次的方式预调心脏;对照纽简单并行循环45分钟,而后两组均接受30分钟缺血和60分钟再灌注。结果显示,预调组室颤发生率低(16.7 VS 83.3％P=0.04),无再灌注心律失常(0 VS66.7％P=0.03),心肌ATP消耗减慢(4.69 1.050 VS 2.35±0.86μmol/g wet wt P<0.01),乳酸积累减少(4.49±0.86 VS 9.80 5.53mg/g wet wtP<0.05),心肌细胞超微结构损伤轻。结论:常温体外循环下应用缺血预调保护犬的心肌是可行而有效的。     

常用抗生素的耳毒性及其防治

据统计,聋儿中有50%～70%是因应用耳毒性抗生素引起的。抗生素的耳毒性是导致听力障碍的重要原因之一,其主要表现为不同程度的耳蜗中毒及前庭中毒反应。长期与短期大剂量应用某些抗生素,可导致耳蜗及前庭结构的功能损害,临床上必须高度重视。     

VEGF165cDNA治疗缺血心肌的实验研究

目的：观察VEGFl65cDNA治疗缺血心肌后心功能、血流动力学、心肌灌注和代谢的变化。方法：健康杂种犬36只，随机分为VEGFl65cDNA和空质粒(pcDNA3：1)组(n＝12)，心肌梗塞组为对照组。Amroid环致慢性心肌缺血模型。VEGFl65基因转染采用直接心肌注射法。结果：基因转染后4周、8周时VEGF165基因组LVEF和CO及前壁、前侧壁、前间壁心肌灌注量、代谢和FDG摄入量明显高于同期心肌梗塞组。结论：VEGFl65基因治疗后4周和8周时心功能显著改善；成活心肌的数量显著增加和/或称成活心肌功能显著恢复。     

椎动脉型颈椎病的彩色多普勒超声诊断

目的 :观察椎动脉型颈椎病的高频彩色多普勒表现和血流动力学变化。方法 :应用彩色多普勒超声诊断仪 (高频探头 ,频率 7～ 10MHz)检测 138例椎动脉型颈椎病患者 (颈椎病组 )的椎动脉 (VH)内径 (D)、血流速度 (V)和血流量 (Q)、阻力指数 (RI)和搏动指数 (PI) ,观察其形态结构、并与 10 0例 (对照组 )进行对照分析。结果 :颈椎病组VA的V(除平均血流速度外 )、D ,Q ,RI,PI与对照组比较差异有显著性 (P <0 0 1)。结论 :高频彩超显示的椎动脉形态和血流参数变化为临床评价椎动脉型颈椎病治疗效果提供了有价值的依据     

三瓣膜替换术中自体心包片加宽升主动脉及其瓣环2例

三瓣膜替换术中自体心包片加宽升主动脉及其瓣环２例王奇，朱朗标１９９２年２月和１９９４年５月，我们为２例风湿性心脏病联合瓣膜病变病人行二尖瓣、主动脉瓣及三尖瓣三瓣膜替换术的同时，用自体心包片加宽升主动脉及主动脉瓣环，取得良好效果。现报告如下：临床资料２...     

半导体激光体外照射血管治疗仪的研制

为克服 He-Ne激光血管内照射疗法所具有的不足,我们采用830nm、500mW半导体激光器,研制了用于体外血管照射的激光治疗仪.设计了易于固定的激光输出头,并且采用单片机控制整机,提高了仪器的稳定性和可靠性.临床应用取得了令人满意的治疗效果.     

镜像右位心合并复杂心脏畸形1例

患儿,男,８岁。３岁发现心脏杂音,平素易感冒发热。胸廓无畸形,心尖搏动位于右侧第５肋间右锁骨中线外侧１ｃｍ,心率１１０次／分,律整,胸骨右缘３、４肋间闻及３／６级粗糙收缩期杂音。心电图示右位心,右心室肥厚。Ｘ线胸片见两肺血稍多,心影扩大,心尖向右下延伸,Ｃ／Ｔ∶０．５３。超声心动图示心脏位于右侧胸腔完全性大动脉转位,两处室间隔缺损。腹部超声见肝脏、脾脏转位。手术在全麻低温体外循环下进行。暴露心脏后见右位心,升主动脉在左前方,主肺动脉在右后方,房室关系一致,肺动脉根部可扪到细震颤,冠状动脉单开口。…     

二尖瓣替换并全瓣膜腱索乳头肌保留技术初步体会

二尖瓣替换并全瓣膜腱索乳头肌保留技术初步体会中国人民解放军总医院心外科王冬青杨建安余翼飞朱朗标在行二尖瓣替换术（ＭＶＲ）的同时保留全部二尖瓣结构将增进术后恢复期的血液动力学状况，使左心室的功能得到保护。现将我科施行该手术的初步体会报告如下：１临床资...