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.     

去交感神经状态对肝部分切除后肝再生的影响

目的：建立去交感神经状态动物模型并探讨去交感神经状态下对肝切除后肝再生的影响。方法：雄性Wistar大鼠共90只,用6-OHDA制作去交感神经状态动物模型。其中30只大鼠分为实验组和对照组各15例。按Higgins和Anderson方法加以改良,作肝左叶和肝中叶切除（约占全肝的68%）。实验组加做去交感神经模型。术后第7天全部动物经抽血处死,计算相对肝重（HMI）、肝再生率的指数（RLR）和有丝分裂指数（MI）。肝脏DNA合成率用^3H标记胸腺嘧啶核苷（^3H-TdR)掺入法测得。结果：注射6-OHDA后3-14d,NE含量明显降低。行肝切除后两组大鼠术后7d均无死亡,实验组大鼠HMI、RLR、MI和^3H-TdR DNA掺入量较对照组均明显下降（P＜0.01)。结论：6-0HDA可明显起到化学性去交感神经的效果。交感神经在存在与否对肝切除后肝再生具有明显影响,去交感神经状态可抑制肝再生的进程。     

去细胞化肝脏生物支架的应用进展

肝脏替代治疗是目前终末期肝病最有效的治疗措施,而去细胞化肝脏生物支架拓宽了肝脏替代治疗的研究领域.目前普遍的支架制备过程是在一定的物理条件下,经灌注设备将化学试剂(去垢剂、消化酶等)注入肝脏自身的脉管结构中,达到去除细胞成分,保留支架内ECM和超微脉管结构的目的.再将种子细胞注入到去细胞化肝脏生物支架,获得再细胞化肝脏,模拟机体内肝脏生物环境进行体外或体内培养,观察种子细胞附着情况,检测肝脏代谢功能,评估肝脏替代效果.目前,种子细胞的选取、再细胞化流程、再细胞化肝脏移植等问题仍处于探索阶段.笔者围绕去细胞化肝脏生物支架的制备与评价、检测和应用作一综述,为进一步应用于实验研究和临床实践提供参考.     

迷走神经递质P物质对人类肝癌细胞侵袭转移能力的影响及其分子机制

目的探讨迷走神经递质P物质对肝癌细胞侵袭转移能力的影响及其相关分子机制。方法实时荧光定量PCR及琼脂糖凝胶电泳检测并分析两种人肝癌细胞株Hep G2和SMMC-7721中神经肽-1(NK-1)受体表达;Cell Titer Blue检测不同浓度P物质(0、100、250、500 nmol/L)在不同时间点(0、24、48、72、96、120 h)对肝癌细胞增殖能力的影响;肝癌细胞均经不同浓度的(0 nmol/L,对照组;100 nmol/L,实验组)P物质处理48 h,Transwell实验检测细胞迁移和侵袭功能,Western blot检测细胞中上皮-间质转化蛋白质标志表达变化,实时荧光定量PCR及Western blot检测NK-1受体表达变化。结果 Hep G2和SMMC-7721两种人肝癌细胞中均有NK-1受体表达;不同浓度P物质(0、100、250、500 nmol/L)在96 h内不影响两种细胞的增殖能力(P>0.05),而在120 h 250 nmol/L和500 nmol/L P物质可抑制两种细胞增殖(P<0.05);100 nmol/L P物质明显促进两种细胞迁移和侵袭能力(P<0.05);与对照组相比,实验组细胞NK-1受体表达明显上调(P<0.05),同时,细胞中上皮-间质转化蛋白质标志E-Cadherin表达下调,N-Cadherin和Slug表达上调(P<0.05)。结论迷走神经递质P物质与人肝癌细胞中表达的NK-1受体相互作用并使其表达上调,促进细胞发生上皮-间质转化,进而提高其侵袭转移能力。     

射频辅助肝切除术与单纯性肝切除术治疗肝细胞性肝癌的前瞻性随机对照研究

目的 比较射频辅助肝切除术和单纯性肝切除术治疗肝细胞性肝癌的围手术期疗效.方法 术前采用随机数字表法将2012年12月至2014年10月在第三军医大学西南医院住院的92例肝癌患者随机性分配到两个治疗组中,其中射频辅助肝切除术组(RF+ LR) 46例,单纯性肝切除术组(LR)46例.观察的主要疗效指标是各组患者术中的出血量和肝门阻断时间;次要疗效指标是术后肝功能、并发症发生率、死亡率和住院时间.结果 平均失血量在射频辅助肝切除术组(RF+ LR)低于单纯性肝切除术组(LR,300 mL vs 400 mL,P=0.049);肝门阻断的时间在RF+ LR组明显降低(10 rain vs15 min,P=0.014).术后肝功能和总体的并发症发生率两组间无统计学差异(P＞0.05),住院时间RF+ LR组明显缩短(18.5 dvs 22.5 d,P=0.002).两组均无死亡的患者.结论 射频辅助肝切除术在肝细胞性肝癌的治疗中能够有效地减少术中出血量、肝门阻断时间和住院时间,但是对于肝硬化重的患者应慎用.     

肝细胞癌癌前病变的诊断和治疗多学科专家共识(2020版)

肝癌目前占我国癌症死因的第二位。我国肝癌的发病特点大多遵循乙型肝炎-肝硬化-肝癌的"三步曲"模式。癌前病变的筛查在胃癌、大肠癌和宫颈癌等恶性肿瘤的诊治中已取得了显著的成果。肝硬化状态下的不典型增生结节具有较强的恶变潜能,尤其是高级别不典型增生结节癌变率极高。基于国内外在这一领域的研究成果和专家临床经验,《肝细胞癌癌前病变的诊断和治疗多学科专家共识(2020版草案)》经多学科协作对肝脏高级别不典型增生结节作为肝癌的癌前病变,从概念、筛查、诊断、治疗和随访等各方面进行了归纳和界定,旨在提出和建立肝癌癌前病变的概念和诊疗原则,为降低我国肝癌的发病率和提高肝癌的总体治疗效果作出贡献。     

加强型射频消融新技术治疗巨大肝血管瘤

目的 探索加强型射频消融新技术治疗巨大肝血管瘤的安全性、有效陛.方法 对30例巨大肝血管瘤患者[直径5.0～ 12.8 (7.7±1.9) cm]进行加强型射频消融新技术治疗.术中对血管瘤直径进行测定,并记录射频消融时间及烧灼次数;术后对血管瘤毁损情况进行监测,从而判断是否给予第二次射频治疗.观察患者术后不良反应及肿瘤直径变化情况.对患者术前、术后随访测定的肿瘤直径大小进行配对t检验,并对单个巨大血管瘤病灶的直径与其RFA时间进行Pearson相关性分析.结果 巨大血管瘤一次新疗法完全毁损率达70.96％,血管瘤病灶缩小率为87.1％.血管瘤病灶的射频消融时间与巨大血管瘤直径呈正相关(r=0.687,P＜0.01).所有患者均无严重不良反应.术后随访时血管瘤直径缩小为(6.2±1.8) cm,与术前[(7.7±1.9) cm]相比,差异有统计学意义(t=6.417,P＜0.01). 结论 加强型射频消融新技术治疗巨大肝血管瘤安全,近期疗效明显.     

中西医结合治疗尖锐湿疣40例临床观察

本文运用中西医结合的方法治疗尖锐湿疣40例,取得了满意疗效,现报告如下。1 临床资料1.1 一般资料本文40例患者均有典型临床特征,醋酸白试验阳性。其中男27例,女13例;年龄17岁～58岁,年龄高峰20岁～25岁,其中女性年龄偏低。发病部位:男性主要分布冠状沟、包皮内板、尿道口、阴茎体和肛周;女性主要分布于小阴唇、阴道口、会阴和肛周。皮损数目最少2个,多则几十个。皮疹由芝麻到桃核大。呈红色、肤色、污灰色。自觉     

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.