微RNA-21通过激活沉默信息调控因子1信号通路缓解多柔比星心肌毒性

目的 探讨微RNA-21（miR-21）能否减轻多柔比星（DOX）心肌毒性,并阐明沉默信息调控因子1（SIRT1）信号通路是否介导其作用。方法 用DOX（1 μmol/L）处理大鼠原代心肌细胞构建DOX心肌毒性模型。将心肌细胞分为8组：对照组、miR-21组、miR-21抑制剂组、DOX组、miR-21+DOX组、miR-21抑制剂+DOX组、Sirtinol+miR-21+DOX组、Sirtinol+DOX组,miR-21 mimics、miR-21抑制剂和Sirtinol（SIRT1抑制剂）分别于DOX处理前24 h加入细胞培养液中。DOX处理24 h后检测心肌细胞的细胞活力、凋亡率、凋亡相关蛋白和SIRT1信号通路表达情况。结果 与对照组相比,DOX处理24 h后心肌细胞活力降低,Bcl-2和SIRT1表达量降低,而Bax和cleaved Caspase-3表达量增加,细胞凋亡率增高,差异均有统计学意义（P<0.05）。与DOX组相比,miR-21可明显提高心肌细胞活力,上调Bcl-2和SIRT1表达,下调Bax和cleaved Caspase-3表达,降低细胞凋亡率,差异均有统计学意义（P<0.05）。抑制SIRT1信号通路可削弱miR-21对心肌细胞的保护作用（P<0.05）。结论 miR-21可通过激活SIRT1信号通路抑制心肌细胞凋亡,提高细胞活力,缓解DOX心肌毒性。     

SIRT3/FOXO3通路在肺癌A549细胞放疗抵抗中的作用机制研究

目的 探讨沉默信息调节因子3（SIRT3）/叉头转录因子O3（FOXO3）通路在肺癌A549细胞放疗抵抗中的作用。方法 体外培养肺癌A549细胞，设置对照组（A549细胞）、放疗组（A549细胞+X射线照射）、SIRT3抑制剂（3-TYP）组（A549细胞+50 μmol/L 3-TYP）、X射线+3-TYP组（A549细胞+X射线照射+50 μmol/L 3-TYP）。采用CCK-8法检测各组A549细胞增殖情况；流式细胞分析仪检测各组A549细胞凋亡情况和细胞周期分布；Western blotting检测A549细胞中SIRT3、FOXO3、Bcl-2、Bax蛋白相对表达量。结果 各组A549细胞培养24 h、48 h、72 h的OD值比较，经重复测量设计的方差分析：①不同时间点的A549细胞OD值比较，差异有统计学意义（P <0.05）；②不同组间的A549细胞OD值比较，差异有统计学意义（P <0.05）；③各组A549细胞OD值变化趋势比较，差异无统计学意义（P >0.05）。放疗组、X射线+3-TYP组A549细胞凋亡率较对照组升高（P <0.05），3-TYP组较对照组降低（P <0.05），3-TYP组、X射线+3-TYP组较放疗组降低（P <0.05），X射线+3-TYP组较3-TYP组升高（P <0.05）。放疗组、X射线+3-TYP组G0/G1期A549细胞较对照组增加（P <0.05），S、G2/M期A549细胞较对照组减少（P <0.05）；3-TYP组G0/G1期A549细胞较对照组降低（P <0.05），S、G2/M期A549细胞较对照组增加（P <0.05）；3-TYP组、X射线+3-TYP组G0/G1期A549细胞较放疗组减少（P <0.05），S、G2/M期A549细胞较放疗组增加（P <0.05）；X射线+3-TYP组G0/G1期A549细胞较3-TYP组增加（P <0.05），S、G2/M期A549细胞较3-TYP组减少（P <0.05）。放疗组、X射线+3-TYP组A549细胞SIRT3、FOXO3、Bax蛋白相对表达量较对照组升高（P <0.05），Bcl-2蛋白相对表达量较对照组降低（P <0.05）；3-TYP组A549细胞SIRT3、FOXO3、Bax蛋白相对表达量较对照组降低（P <0.05），Bcl-2蛋白相对表达量较对照组升高（P <0.05）；3-TYP组、X射线+3-TYP组A549细胞SIRT3、FOXO3、Bax蛋白相对表达量较放疗组降低（P <0.05），Bcl-2蛋白相对表达量较放疗组升高（P <0.05）；X射线+3-TYP组A549细胞中SIRT3、FOXO3、Bax蛋白相对表达量较3-TYP组升高（P <0.05），Bcl-2蛋白相对表达量较3-TYP组降低（P <0.05）。结论 肺癌A549细胞发生放疗抵抗可能与SIRT3/FOXO3通路受抑制有关。     

沉默信息调节因子3对白藜芦醇诱导的人卵巢癌SKOV3细胞凋亡的影响

目的：检测沉默信息调节因子3（Sirt3）对白藜芦醇（Res）诱导的人卵巢癌SKOV3细胞凋亡的影响,探讨其促进凋亡的机制。方法：人卵巢癌SKOV3细胞加入不同浓度（0、2.5、5.0、10.0、20.0、40.0和80.0 mg·L^-1）Res培养24h,MTT法检测细胞存活率。将细胞随机分为对照组、Sirt3抑制剂3-（1H-1,2,3-三唑-4-基）吡啶（3-TYP）组、Res组和3-TYP+Res组,培养24h后,MTT法检各组细胞增殖抑制率;采用Hoechst 33342进行细胞核染色,激光共聚焦显微镜观察细胞核形态;采用活性氧（ROS）探针检测细胞中ROS水平;Western blotting法检测各组细胞中Sirt3、B细胞淋巴瘤/白血病-2（Bcl-2）、Bcl-2相关X蛋白（Bax）和含半胱氨酸的天冬氨酸蛋白水解酶3（cleavedcaspase-3）蛋白表达水平。结果：MTT实验,随着Res浓度的增加,细胞存活率明显降低,Res的半数抑制浓度（IC₅₀）为42.73 mg·L^-1。与对照组比较,Res组和3-TYP+Res组细胞增殖抑制率明显升高（P<0.05）;与Res组比较,3-TYP+Res组细胞增殖抑制率明显升高（P<0.05）。与对照组比较,3-TYP+Res组细胞核出现固缩、染色增强、核碎裂增多。与对照组比较,3-TYP组细胞红色荧光无明显变化,Res组和3-TYP+Res组细胞红色荧光明显减少。Western blotting法检测,与对照组比较,3-TYP组细胞中Sirt3蛋白表达水平明显降低（P<0.05）,Bcl-2、Bax和cleaved caspase-3蛋白表达水平无明显变化（P>0.05）,Res组细胞中Sirt3和Bcl-2蛋白表达水平明显降低（P<0.05）,Bax和cleaved caspase-3蛋白表达水平明显升高（P<0.05）;与Res组比较,3-TYP+Res组细胞中Bax和cleaved caspase-3蛋白表达水平明显升高（P<0.05）,Bcl-2和Sirt3蛋白表达水平明显降低（P<0.05）。结论：Res可以诱导SKOV3细胞的凋亡,3-TYP通过抑制Sirt3表达可增强Res的作用。     

Effect of heme oxygenase-1 on protection of myocardial cells by resveratrol against doxorubicin-induced apoptosis

目的 探讨血红素加氧酶1(HO-1)在白藜芦醇(RES)抑制阿霉素(DOX)致心肌细胞凋亡中的作用.方法 60 只雄性C57BL/6J小鼠随机分为对照组、DOX组、DOX+ RES组和DOX+ RES+HO-1抑制剂锡原卟啉(ZnPP)组,每组15只;除对照组外,均采用经腹腔注射DOX(总剂量12 mg/kg)建立心肌损伤模型.苏木精-伊红(HE)染色后光学显微镜下观察心肌组织病理学改变.采用化学比色法测定血清肌酸激酶(CK)和乳酸脱氢酶(LDH)的活性;分光光度法检测心肌组织HO-1和半胱氨酸蛋白酶3(Caspase-3)的活性;Western blotting法检测心肌组织HO-1蛋白表达;免疫组织化学法检测心肌组织凋亡相关蛋白Bcl-2和Bax的表达;TUNEL法检测心肌细胞凋亡率.结果 与对照组比较,DOX组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达及心肌细胞凋亡率均显著升高(P＜0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著降低(P＜0.01).与DOX组比较,DOX +RES组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达及心肌细胞凋亡率均显著降低(P＜0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著升高(P＜0.01);与DOX+ RES组比较,DOX+ RES+ZnPP组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达和心肌细胞凋亡率均显著升高(P＜0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著降低(P＜0.05).结论 HO-1参与RES对DOX致心肌细胞凋亡的抑制作用.     

血红素加氧酶1在白藜芦醇抑制阿霉素致心肌细胞凋亡中的作用

目的探讨血红素加氧酶1(HO-1)在白藜芦醇(RES)抑制阿霉素(DOX)致心肌细胞凋亡中的作用。方法 60只雄性C57BL/6J小鼠随机分为对照组、DOX组、DOX+RES组和DOX+RES+HO-1抑制剂锡原卟啉(ZnPP)组,每组15只;除对照组外,均采用经腹腔注射DOX(总剂量12 mg/kg)建立心肌损伤模型。苏木精-伊红(HE)染色后光学显微镜下观察心肌组织病理学改变。采用化学比色法测定血清肌酸激酶(CK)和乳酸脱氢酶(LDH)的活性;分光光度法检测心肌组织HO-1和半胱氨酸蛋白酶3(Caspase-3)的活性;Western blotting法检测心肌组织HO-1蛋白表达;免疫组织化学法检测心肌组织凋亡相关蛋白Bcl-2和Bax的表达;TUNEL法检测心肌细胞凋亡率。结果与对照组比较,DOX组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达及心肌细胞凋亡率均显著升高(P0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著降低(P0.01)。与DOX组比较,DOX+RES组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达及心肌细胞凋亡率均显著降低(P0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著升高(P0.01);与DOX+RES组比较,DOX+RES+ZnPP组小鼠的CK、LDH和Caspase-3活性、Bax蛋白表达和心肌细胞凋亡率均显著升高(P0.01),而HO-1活性及HO-1、Bcl-2蛋白表达均显著降低(P0.05)。结论 HO-1参与RES对DOX致心肌细胞凋亡的抑制作用。     

葛根素激活SIRT_3/SOD_2信号通路缓解多柔比星心脏毒性实验研究

目的:探究葛根素(Pue)能否减轻多柔比星(DOX)引起的心脏毒性及其具体机制。方法:通过一次性腹腔注射多柔比星(15 mg/kg)建立小鼠多柔比星心脏毒性急性模型。DOX给药前3 d每日通过腹腔注射给予SIRT_3特异性阻断剂3-TYP[50 mg/(kg·d)]给药3 d。DOX给药后每日通过腹腔注射给予葛根素[10 mg/(kg·d)],给药5 d。实验小鼠随机分为正常组(Control组),葛根素组(Pue组),多柔比星组(DOX组),多柔比星+葛根素组(DOX+Pue组),3-TYP+多柔比星+葛根素组(3-TYP+DOX+Pue组),3-TYP+多柔比星组(3-TYP+DOX组)。DOX给药5 d后检测小鼠心脏收缩舒张功能、心脏组织病理改变、血清LDH水平、氧化应激和凋亡情况。结果:与Control组小鼠相比,DOX组小鼠心功能明显受损,心肌细胞出现"空泡化"反应,血清内LDH水平、心肌组织心肌细胞内氧活性(ROS)产量、丙二醛(MDA)含量和心肌凋亡水平明显增加。葛根素给药可以有效减轻多柔比星心脏毒性,抑制心肌组织氧化应激损伤和凋亡,伴随SIRT_3/SOD_2信号的激活。而用SIRT_3特异性抑制剂3-TYP抑制SIRT_3信号通路后,葛根素的保护作用明显减弱(均P<0.05)。结论:葛根素可以通过激活SIRT_3/SOD_2信号通路抑制氧化应激损伤和凋亡缓解多柔比星心脏毒性。     

姜黄素类似物L6H4对2型糖尿病及高脂大鼠脑的保护作用

目的探讨姜黄素类似物L6H4对2型糖尿病及高脂大鼠脑组织的保护作用及机制。方法将雄性SD大鼠随机分为正常组、高脂组、高脂治疗组、糖尿病组和糖尿病治疗组5组,每组8只。后4组高脂高糖喂养4周后,糖尿病组及糖尿病治疗组按30mg/kg单次腹腔注射链脲佐菌素诱导2型糖尿病模型。高脂治疗组和糖尿病治疗组分别按0.2mg/（kg·d）的剂量给予姜黄素类似物L6H4灌胃治疗8周,其余组分别给予同等容积羧甲基纤维素钠灌胃对照。光镜及透射电镜下观察大鼠脑组织形态改变。TBA法检测各组大鼠脑组织丙二醛（MDA）水平,羟胺法检测各组大鼠脑组织超氧化物歧化酶（SOD）活性。Westernblot法检测各组大鼠脑组织B淋巴细胞瘤-2基因相关X蛋白（Bax）、B淋巴细胞瘤-2基因（Bcl-2）蛋白表达水平及Bax/Bcl-2比值。结果高脂组及糖尿病组大鼠脑组织可见神经元变性、坏死及脱髓鞘,糖尿病组大鼠神经元细胞凋亡明显增加;经姜黄素类似物L6H4治疗后,高脂治疗组和糖尿病治疗组大鼠脑组织形态学损害得到明显改善,糖尿病治疗组大鼠神经元细胞凋亡明显减少。与正常组比较,高脂组大鼠MDA水平升高,脑组织Bax蛋白表达水平、Bax/Bcl-2比值均升高,Bcl-2蛋白表达水平均降低（均P＜0.05）;经姜黄素类似物L6H4治疗后,与高脂组比较,高脂治疗组大鼠MDA水平降低,脑组织Bax蛋白表达水平、Bax/Bcl-2比值均降低（均P＜0.05）。与正常组比较,糖尿病组大鼠MDA水平升高,SOD活性明显降低,脑组织Bax蛋白表达水平、Bax/Bcl-2比值均升高,Bcl-2蛋白表达水平均降低（均P＜0.05）;经姜黄素类似物L6H4治疗后,与糖尿病组比较,糖尿病治疗组大鼠MDA水平降低、SOD活性升高,脑组织Bax蛋白表达水平、Bax/Bcl-2比值均降低,Bcl-2蛋白表达水平升高（均P＜0.05）。结论姜黄素类似物L6H4对2型糖尿病及高脂大鼠脑组织有保护作用,可能与其抗凋亡和抑制氧化应激有关。     

沉默信息调节因子3在丹酚酸A抗紫外线诱导视网膜色素上皮细胞氧化应激性损伤中的作用及机制

目的：探讨SIRT3在丹酚酸A（Sal A）抗紫外线诱导视网膜色素上皮细胞损伤中的作用及其机制。方法：将ARPE-19细胞分为对照（Sal A）组、UV组、Sal A+UV组、Sal A+UV+阴性si-RNA组、Sal A+UV+si-SIRT3组,UV照射剂量为30 mJ/cm2,Sal A浓度为50 μmol/L,采用MTT法检测细胞存活,DCFH-DA法分析细胞内ROS水平,CuZn/Mn-SOD活性检测试剂盒（WST-8法）检测SOD2活性,Western blot分析SIRT3、SOD2、Bcl-2、Bax、cleaved-Caspase3、Cyt c的表达,RT-qPCR法检测细胞内SIRT3和SOD2的mRNA表达情况。结果：UV处理后,ARPE-19细胞内SIRT3蛋白和mRNA表达量降低,经5、25、50 μmol/L预处理后,SIRT3表达量明显增加。与对照组相比,UV组细胞凋亡率,ROS含量,Bax、cleaved-Caspase3、Cyt c表达量明显增加,细胞存活率、SOD2表达量和活性明显降低。与UV组相比,Sal A+UV组细胞凋亡率,ROS水平,SIRT3、cleaved-Caspase3、Cyt c表达量明显降低,细胞存活率、SOD2表达量和活性明显增加。与Sal A+UV相比,Sal A+UV+si-SIRT3组细胞凋亡率,ROS水平,SIRT3、cleaved-Caspase3、Cyt c表达量明显增加,细胞存活率、SOD2表达量和活性明显降低。结论：Sal A可增加SIRT3的表达,恢复SOD2活性,降低UV诱导细胞损伤作用。     

Bcl-2及Bax在异丙肾上腺素致心肌坏死模型大鼠心肌中的表达及意义

目的：探讨Bcl-2及Bax在异丙肾上腺素（Isp）致心肌坏死模型大鼠心肌中的表达及意义。方法：40只大鼠随机分为4组：正常对照组及注射Isp后12 h、1周和3周组。除正常对照组外,其他各组大鼠皮下注射Isp（15 mg?kg-1体重）,并于给药后12 h、1周和3周时取对应组大鼠心脏,用免疫组化法及RT-PCR法检测各组大鼠心肌组织中Bcl-2及Bax的表达。结果：免疫组化结果显示,注射Isp后 12 h及1周组大鼠心肌组织中Bax表达明显高于正常对照组（P<0.05）;注射Isp后12 h、1周及3周组大鼠心肌组织Bcl-2表达量均明显低于正常对照组（P<0.05）;注射Isp后12 h、1周、3周后,各组大鼠心肌组织Bcl-2/Bax比值均低于正常对照组（P<0.05）。RT-PCR结果显示,注射Isp后各组大鼠心肌组织Bax mRNA表达量均明显高于正常对照组（P<0.05）,且在注射Isp后1周时,Bax mRNA表达量达到高峰;注射Isp后,各组大鼠心肌组织Bcl-2 mRNA表达量均明显低于正常对照组大鼠（P<0.05）;与正常对照组大鼠比较,在注射Isp后 12h及1周,各组大鼠心肌组织Bcl-2/Bax比值明显增高（P<0.05）。结论：心肌细胞的凋亡是心肌纤维化的病理基础,而Bcl-2家族基因及蛋白表达变化在此过程中起主要调控作用。     

金属硫蛋白抑制阿霉素引起的心肌细胞凋亡作用研究

目的 研究锌诱导的金属硫蛋白(MT)对阿霉素(DOX)所致心肌细胞凋亡的的抑制作用并探讨其作用机制.方法 雄性C57BL小鼠随机分成4组(每组7只),即对照组、锌处理组、给药组和锌预处理给药组.各组小鼠连续2 d皮下给予ZnSO4 300 μmol/kg(锌处理组和锌预处理给药组)或等量生理盐水(对照组和给药组),第3 d单次腹腔注射DOX 15 mg/kg(给药组和锌预处理给药组)或等量生理盐水(对照组和锌处理组).DOX给药后第4 d处死小鼠,采用血红素镉饱和法测定心脏组织MT含量,ELISA法测定心肌凋亡指数,蛋白印迹分析(Western blot)测定心肌组织凋亡相关蛋白Bax、Bcl-2的表达水平.结果 与对照组相比,DOX引起小鼠心脏质量下降10%,且显著引起小鼠心肌细胞凋亡;经锌诱导后,心脏组织MT水平提高约25倍,且MT高表达能抑制DOX引起的凋亡细胞增加;进一步的研究发现,Bax蛋白表达水平在DOX给药后明显升高,而MT高表达抑制了Bax的表达升高;Bcl-2蛋白表达水平各组间的差异无统计学意义.结论 锌诱导的MT高表达能抑制DOX引起的心肌细胞凋亡,其作用机制主要与抑制DOX引起的Bax蛋白表达升高以及Bax/Bcl-2比值增加有关.     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Electro-Acupuncture Combined with the Trigger Point Needle-Embedding for Treatment of Primary Trigeminal Neuralgia in 31 Cases

In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.     

Investigation of Matrix Metalloproteinase -1, 2 and tissue inhibitor of matrix metalloproteinases-1 in Endometriosis

Objective： To explore the role of matrix metalloproteinase-1,2 （MMP-1, MMP-2） and tissue inhibitor of matrix metalloproteinases-1 （TIMP-1） in endometriosis. Methods： The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects （excluding endometriosis） were collected and examined by in situ hybridization technology and western blot assay. Results： Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant （P 〈 0.01 ）. Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion： The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.     

Shi Da-zhuo (史大卓) —An outstanding cardiologist of integrative medicine

Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.     

Persist in and Carry Forward the Integrative Medical Research——Speech at the 6th National General Congress of Chinese Association of Integrative Medicine by Academician CHEN Zhu,Minister of Ministry of Health

The 6th National General Congress of Chinese Association of Integrative Medicine （CALM） was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.