一氧化氮与动脉粥样硬化的研究进展

动脉粥样硬化（arteriosclerosis，AS）是心脑血管疾病的重要发病原因，其发病机理至今尚未完全阐明，与血管内皮细胞结构的损伤和功能异常而导致的一氧化氮（nitricoxide，NO）合成减少及分泌异常有密切关系。内皮细胞分泌的№参与AS的形成及病理过程，是AS的重要因素亦已肯定 。现已研究表明，NO与一些含氦衍生物一起通过和生物分子及细胞的相互作用参与机体保护、调节及逆转等机制，特别是调节心血管系统中众多的生理和病理生理过程 ，释放NO的化合物已经作为评价NO在心血管系统生理和治疗上关键作用的有效工具 。本结合献仅就NO与AS研究进展作一综述。     

尼卡地平控制性降压对家犬脊髓血流的影响

目的　观察尼卡地平控制性降压对家犬脊髓血流的影响。方法　成年杂种犬 6只 ,体重 12 5～ 16kg ,以 2 5 %硫喷妥钠麻醉。股动脉置管监测MAP。以尼卡地平 8μg·kg 1·min 1持续静脉注射控制性降压。以激光多普勒血流仪测定脊髓血流 (SCBF)。结果　降压前MAP为 (12 5 7±10 6 )mmHg ,降压后为 (72 0± 11 2 )mmHg ,平均下降 4 2 8%。降压前SCBF为 (9 80± 1 0 5 )v ,降压后为 (8 0 4± 0 96 )v ,降低幅度为 18%。结论　尼卡地平控制性降压对SCBF影响较小 ,可安全用于脊髓手术。     

选择性上肢神经阻滞和静脉局部麻醉的进展

临床实践中，尽管臂丛神经阻滞可采用多种人路以满足上肢区域麻醉的需要，但有时仍需应用一些不常见的技术，如选择性上肢神经阻滞和静脉局部麻醉（IVRA），来阻滞非源自臂丛的神经或弥补臂丛神经阻滞不全。     

踝震挛和气道黏膜刺激监测脊髓功能的研究

总结我院近年来在脊柱手术中采用踝震挛试验和气道黏膜刺激反应监测脊髓功能的方法。     

Effects of α1-adrenergic receptor on the proliferation of cholangiocarcinoma cells

Objective To investigate the correlation between α1-adrenergic receptor and the pathological behavior of cholangiocarcinoma, and the effects of norepinephrine (NE) on the proliferation of cholangiocarcinoma cell line QBC939. Methods Thirty-six samples of cholangiocarcinoma were resected in Southwest Hospital from August 2002 to March 2008. The expression of α1-adrenergic receptor in the 36 samples of cholangiocarcinoma tissue and 4 samples of normal bile duct tissue were detected by SABC technique. The proliferation of cholangio-carcinoma cell line QBC939 was detected after processing the cells with NE, phentolamine and prazosin. All the data were analyzed by chi-square test. Results The high positive expression rate of α1-adrenergic receptor was 68% (17/25) in patients with lymph node metastasis, which was significantly higher than 9% (1/11) in patients without lymph node metastasis (χ2=10.604, P<0.05). The high positive expression rate of α1-adrenergic receptor was 85% (11/13) in patients with middle and low positioned cholangiocarcinoma, which was significantly higher than 30% (7/23) in patients with hilar cholangiocarcinoma (χ2=9.753, P<0.05). NE promoted the proliferation of cholangiocarcinoma cell line QBC939 by stimulating the expression of α1-adrenergic receptor, and in a concentration-dependent manner. The proliferative effect was weakened as time passed by, and it was eliminated by phentolamine and prazosin. Conclusions The expression of α1-adrenergic receptor is diverse due to lymph node metastasis and the location of the tumor, α1-adrenergic receptor with high expression may play an important role in the proliferation and metastasis of cholangiocarcinoma.     

胸腔镜下行左颈胸交感神经节切除治疗长QT综合征一例

胸腔镜下行左颈胸交感神经节切除治疗长ＱＴ综合征一例秦永文郑成竹沈炎明邓小明金爱娟曹江章同华患者女，１７岁，于１９９３年７月在学校跑步１０米左右突然两眼黑蒙、晕厥，历时２～３分钟，醒后无特殊不适。同年８月份再次晕厥，神志不清，经胸部按压后苏醒。醒后感耳...     

异丙酚的药理学特征及临床应用

异丙酚(propofol)是一种新型快速短效的全麻药,商品名为得普利麻(diprivan),其临床特点是起效快、持续时间短、苏醒迅速而平稳,不良反应少。近年来,该药物已广泛用于麻醉及重症病人镇静。现就异丙酚的药理学特征及临床应用作一介绍。1　药理学特征1.1　药效学1.1.1　作用机制　该药的作用机制尚不完全明了,可能对脂膜具有非特异性作用。异丙酚对中枢神经系统多种受体及离子通道有不同程度的影响,如钠离子通道、γ-氨基丁酸(GABA)受体等。1.1.2　中枢神经系统作用　病人血浆异丙酚浓度与其镇静、麻醉深度密切相关,轻度镇静、深度镇静和麻醉…     

NF-κB"decoy"寡核苷酸对LPS诱导巨噬细胞TNF-α和IL-6表达的影响

目的 :研究NF -κB“decoy”寡核苷酸 (ODNs)对LPS诱导小鼠巨噬细胞株J774 1细胞的TNF -α和IL - 6表达的影响 ,探讨F -κB“decoy”寡核苷酸防治LPS诱导急性炎性损伤的可行性。方法 :巨噬细胞株J774 1细胞接种于 6孔板中 ,4× 10 5个细胞/孔 ,37℃、5 %CO2 培养过夜 ,待细胞汇合至 80 % ,用无血清、无抗生素 16 4 0培养液洗涤细胞两次后随机分为 4组。内毒素刺激组 :用含 1mg/LLPS的培养液刺激 ,不加治疗 ;NODN治疗组 :用含 1mg/LLPS的培养液刺激 3h ,然后用脂质体介导 1μmol/L(终浓度 )NF -κB“decoy”ODNs治疗 ;SO…