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1.
【目的】 研究别嘌醇对中青年原发性高血压合并高尿酸血症患者的治疗效果｡【方法】 入选60例初发的中青年原发性1级高血压合并高尿酸血症患者,随机分为别嘌醇治疗组(低嘌呤饮食控制 + 别嘌醇200 mg, 3次/d)和对照组(低嘌呤饮食控制)各30例,4周后观察诊室血压､动态血压､血尿酸､肝功能､肾功能及血浆卧位肾素､血管紧张素Ⅱ(AngⅡ)等变化｡ 【结果】 两组患者基线资料无明显差别,治疗4周结束时,两组在降低诊室平均收缩压[(7.9 ± 2.9)mmHg vs. (2.4 ± 1.5)mmHg, P < 0.05],诊室平均舒张压[(5.7 ± 2.0)mmHg vs. (2.1 ± 1.3)mmHg, P < 0.05],24 h平均收缩压[(6.8 ± 2.7)mmHg vs. (0.7 ± 1.2)mmHg, P < 0.05],24 h平均舒张压[(4.8 ± 1.3)mmHg vs. (0.5 ± 0.9)mmHg, P < 0.05]方面均有显著差异｡别嘌醇组血压降至正常的比例更大(62.1% vs. 6.7%, P < 0.01)｡两组在降低尿酸方面有显著差异[(85.1 ± 18.1)μmol/L vs. (17.1 ± 9.8)μmol/L, P < 0.05]｡别嘌醇组血尿酸降至正常的比例更大(86.2% vs. 16.7%, P < 0.05)｡别嘌醇组卧位肾素､AngⅡ活性明显下降(P < 0.05)｡治疗结束时两组肝功能､肾功能､血糖､血脂等均无明显改变,未发现明显严重副作用｡【结论】 高尿酸血症在中青年高血压病的发生中起着重要的致病作用,别嘌醇在有效降低血尿酸的同时能够降低血压,安全性良好｡其机制可能与抑制RAS活性有关｡别嘌醇可望成为轻度高血压合并高尿酸血症患者一种新的高血压治疗药物,其在临床的推广需要更大样本量的临床试验｡ 相似文献
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伊贝沙坦对糖尿病大鼠肾氧化应激､NF-κB活性和 ICAM-1 mRNA表达的影响 总被引：2，自引：0，他引：2
【目的】 探讨伊贝沙坦对糖尿病大鼠肾脏氧化应激､NF-κB活性和ICAM-1 mRNA表达水平的影响｡ 【方法】 将33 只SD大鼠随机分为3 组:正常对照组(C)､糖尿病组(D)和伊贝沙坦组(I)｡糖尿病大鼠模型用链脲佐菌素诱导｡大鼠饲养12周后,观察24h尿微量白蛋白排泄率(UAER),取出肾脏作肾组织病理检查,测定肾组织中丙二醛(MDA)含量与超氧化物歧化酶(SOD)､过氧化氢酶(CAT)､谷胱苷肽过氧化物酶(GSH-PX)活性变化｡逆转录-聚合酶链反应(RT-PCR)法检测肾组织中细胞间粘附因子-1(ICAM-1)mRNA的表达｡凝胶电泳迁移率变动分析(EMSA)检测核因子(NF)-κB的活性｡ 【结果】 UAER在D组(378 ± 100)及I组(149 ± 58)均显著高于C组(30 ± 13),P < 0.01;I组UAER较D组显著降低,P < 0.01｡与C组大鼠比较,D组大鼠肾组织MDA含量显著增高(5.8 ± 0.9 vs 3.5 ± 0.2), P < 0.01;SOD､CAT及GSH-PX活性均显著降低(22.3 ± 3.1,11.7 ± 0.7,11.3 ± 1.7 vs 39.2 ± 2.0,18.2 ± 0.5,23.2±3.9),P < 0.01;Ⅰ组肾组织MDA含量(4.3 ±0.6)明显低于D组,P < 0.01;SOD､CAT及GSH-PX活性(30.7 ± 1.6,13.3 ± 0.4,15.8 ± 2.8)明显高于D组,均P < 0.01｡NF-κB活性在D组大鼠肾组织(44.3 ± 0.4)明显高于C组(14.6 ± 0.8),P < 0.01;Ⅰ组(37.7±0.3)明显低于D组,P < 0.01｡D组肾组织ICAM-1 mRNA表达(2.14 ± 0.2)明显高于C组(0.36±0.1),P < 0.01;Ⅰ组肾组织ICAM-1 mRNA(1.37±0.1)表达明显低于D组,P < 0.01｡【结论】 伊贝沙坦可能部分通过减轻氧化应激反应以及下调糖尿病大鼠肾组织中NF-κB的活性,降低ICAM-1 mRNA的表达水平实现对糖尿病大鼠肾脏的保护作用｡ 相似文献
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【目的】 探讨控制性超排卵(COH)过程中HCG注射后雌二醇(E2)及其它激素浓度的变化,并分析对妊娠结局的影响｡【方法】 前瞻性研究74例行COH的不孕患者,采外周静脉血检测患者基础性激素水平､启动日卵泡刺激素(FSH)､黄体生成素(LH)和E2以及HCG注射日､采卵(OPU)日､移植(ET)日的LH､E2和孕酮(P)浓度｡根据妊娠结局分为妊娠组(n = 28)与非妊娠组(n = 46)｡【结果】 74例患者HCG注射日､OPU日和ET日的E2 [(2 380 ± 1 177 vs. 839 ± 446 vs. 1 199 ± 634) pg/mL, P < 0.01]､P [(0.50 ± 0.29 vs. 7 ± 4 vs. 84 ± 48) ng/mL,P < 0.01]浓度差异有统计学意义｡获卵数与HCG日(r = 0.602, P < 0.01)､OPU日(r = 0.545, P < 0.01) E2浓度呈正相关｡妊娠组与非妊娠组的年龄﹑基础性激素水平﹑获卵数﹑受精数﹑移植胚胎数以及HCG注射日﹑OPU日和ET日的LH﹑E2和P的差异均无统计学意义(P > 0.05)｡妊娠组HCG日､OPU日和ET日的E2 [ (2 400 ± 1 116 vs. 909 ± 492 vs. 1 263 ± 662) pg/mL, P < 0.01]､P [(0.5 ± 0.4 vs. 6 ± 3 vs. 79 ± 38) ng/mL,P < 0.01]浓度差异均有统计学意义｡非妊娠组HCG日､OPU日和ET日的E2[(2 369 ± 1 225 vs. 797 ± 466 vs. 1 161 ± 621) pg/mL, P < 0.01]､P [(0.52 ± 0.28 vs 7 ± 4 vs 87 ± 51) ng/mL, P < 0.01]之间浓度差异同样均有统计学意义｡【结论】 COH中,E2浓度在HCG注射后显著下降,采卵日E2浓度明显低于HCG日及ET日(P < 0.01),采卵后开始上升;E2浓度的下降对妊娠结局无明显影响｡
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【目的】 探讨常压高浓度氧对新生大鼠脑细胞凋亡､脑组织MBP(髓鞘碱性蛋白)表达和早期神经行为发育的影响｡【方法】 166只7日龄SD大鼠,随机分空气对照组和80%高氧模型组, 新生鼠分别于开始吸氧后24 h､72 h被处死,TUNEL法观察不同高氧暴露时间大鼠脑组织细胞凋亡指数;高氧暴露72 h组在生后10 d､15 d,完成神经行为功能测试后,免疫组织化学染色观察脑组织MBP表达,空气组新生鼠处死日龄与高氧组相同｡【结果】 高氧2 h组脑细胞凋亡指数较高氧0h组(空气对照组)增加(P < 0.01),随着吸氧时间的延长,细胞凋亡逐渐增多,以12 ~ 24 h 组细胞凋亡最明显,72 h下降,但仍较0 h组增加(P < 0.01)｡ 高氧72小时组d10､d15 MBP的表达较空气组低(137 ± 5 vs. 131 ± 6, 128±5 vs. 122 ± 5)(P < 0.05)｡高氧暴露72 h组新生大鼠听觉惊愕､负趋地性､前肢抓握反射､空中翻正的发育在一定日龄较空气对照组延迟(P < 0.05)｡【结论】 常压高浓度氧可以引起新生大鼠脑细胞凋亡;抑制脑组织MBP的表达;导致新生大鼠神经行为发育延迟｡ 相似文献
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汶川地震灾民的心理健康状况及影响因素 总被引：32，自引：4，他引：32
【目的】 评估汶川地震后第2周转移安置点灾民的心理健康状况并探索其影响因素｡【方法】 对江油市太平镇安置点灾民随机抽样后,利用创伤后应激障碍(PTSD)症状清单平民版(PCL*9鄄C)和汉密尔顿抑郁量表(HRSD)及自编调查问卷进行评估｡【结果】 完成调查的223人中,PTSD筛查阳性率为14.1%,抑郁症状阳性率为31.1%,12.9%报告有自杀观念;PCL*9鄄C总分和HRSD总分呈正相关(r=0.809, P < 0.01); PCL*9鄄C和HRSD总分均不存在有统计学意义的性别差异;亲属遇难组PCL*9鄄C总分(44 ± 14)､HRSD总分(24 ± 12)高于仅经济损失组(33 ± 13, P < 0.001;14 ± 10,P < 0.001);两种总分各年龄组比较,儿童(30 ± 13;10 ± 9)､青少年(13 ～ 18岁)为(37 ± 13;16 ± 13)､青年(33 ± 10;14 ± 9)､中年(36 ～ 55岁)为(38 ± 14;19 ± 12)､老年前期(56 ～ 65岁)为(40 ± 15;20 ± 12)和老年(35 ± 13;17 ± 9) 6个年龄组组间差异有统计学意义(P = 0.015;P < 0.001)｡以PCL*9鄄C总分为因变量,一般资料为自变量进行线性逐步回归,烦扰程度､最糟糕天数､绝望感进入方程(R2=0.708,P < 0.001)｡【结论】 PTSD症状群､抑郁症状群是转移安置点灾民的主要心理问题,遇难者亲属､36 ～ 65岁人群､青少年更为严重或突出｡绝望感､最糟糕天数和烦扰程度是反映和预测PTSD症状及其程度的重要指标｡ 相似文献
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大鼠骨髓间质干细胞定向分化为神经元的实验研究 总被引：5，自引：3，他引：5
【目的】 研究体外培养骨髓来源的表达nestin的成年大鼠骨髓间质干细胞(MSC)并诱导分化神经元样细胞的潜能,为中枢神经系统疾病的细胞移植治疗提供理想的供体｡【方法】 采用全骨髓法分离培养成年SD大鼠MSC,传至第6代的MSC接种在前一天涂有100 μg/L多聚赖氨酸的塑料培养瓶或培养皿中,用含100 mL/L FBS的DMEM/F12培养液添加10 ng/mL bFGF的培养液培养并以DMSO､BHA与Forskolin等诱导剂联合诱导MSC分化为神经元｡流式细胞仪鉴定诱导前MSC的细胞表面抗原,免疫荧光检测诱导前及诱导后6 h､12 h､24 h神经元特异性抗原nestin､NF*9鄄200和GFAP表达率｡ 【结果】 流式细胞仪检测传至第6代MSC表面抗原CD29和CD44阳性率分为98.8%,96.6%, CD34和CD45阴性｡ 免疫荧光鉴定传至第6代的MSC表达nestin阳性率为57.1% ± 6.9%,不表达NF*9鄄200和GFAP｡诱导后30 min可见神经元样细胞出现,诱导后6 h､12 h､24 h经nestin和NF*9鄄200免疫荧光鉴定,诱导后6 h､12 h､24 h nestin阳性率分别为96.5% ± 1.9%,88.1% ± 5.4%,33.5% ± 5.4%,NF*9鄄200阳性率分别为90.1% ± 2.9%,97.5% ± 1.3%,98.1% ± 1.6%｡【结论】 骨髓来源的nestin阳性的MSC具有神经祖细胞特性并且可诱导分化为神经元样细胞,可作为种子细胞用于神经系统疾病的治疗｡ 相似文献
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【目的】 观察不同时限大鼠心肌肥厚模型血清中白细胞介素-18(IL-18)､IL-10浓度的变化,探讨IL-18 和IL-10 在心肌肥厚发生发展中的可能作用｡ 【方法】 采用大鼠腹主动脉缩窄心肌肥厚模型,64只F344大鼠分成8组:缩窄时限为2､3､4､8周组和相应对照组,每组8只, 使用心脏超声确定心肌肥厚,采用酶联免疫吸附法检测大鼠血清IL-18 和IL-10的浓度｡【结果】 腹主动脉缩窄2 ~ 8周后,大鼠心脏超声检查舒张期室间厚度隔(IVSTd)､舒张期左室后壁(PWLVd)明显不同程度的增厚｡大鼠血清中IL-18 ､IL-10 浓度明显高于相应对照组｡2 ~ 8周时IL-18(pg/mL)两组分别为461 ± 387 vs 529 ± 394､516 ± 428 vs 458 ± 367､816 ± 442 vs 470 ± 355､462 ± 343 vs 466 ± 424;IL-10(pg/mL)两组分别为926 ± 634 vs 717 ± 664､1033 ± 661 vs 736 ± 544､1221 ± 568 vs 700 ± 601､891 ± 569 vs 735 ± 579｡实验组随缩窄时限延长而明显增加(2,3,4周时P < 0.05),但缩窄8周时增加不明显(P > 0.05),各对照组之间无明显变化(P > 0.05)｡【结论】 大鼠心肌肥厚模型血清中IL-18､IL-10水平明显升高, 且在一定程度上反映了心肌肥厚病变的严重程度｡ 相似文献
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【目的】 探讨大鼠肝门阻断后肠道细菌移位､内毒素血症情况及肝硬化模型肝门阻断后细菌移位特点｡【方法】 将40只非肝硬化雄性SD大鼠及40只肝硬化模型雄性SD大鼠分别随机分为假手术组(n = 10)､肝门阻断10 min(n = 10)､20 min(n = 10)､30 min组(n = 10),在行肝门阻断手术24 h后分别取肠系膜淋巴结､肝､肺及门､腔静脉血作细菌培养,并取门､腔静脉血作内毒素检测｡【结果】 非肝硬化大鼠肝门阻断30 min组门､腔静脉血内毒素浓度(EU/mL 0.18 ± 0.05､0.17 ± 0.06)明显高于假手术组(EU/mL 0.12 ± 0.03､0.11 ± 0.03),肠系膜淋巴结细菌培养呈阳性｡肝硬化大鼠肝门阻断20 min组门､腔静脉血内毒素浓度(EU/mL 0.42 ± 0.09､0.35 ± 0.07)明显高于假手术组(EU/mL 0.15 ± 0.04､0.14 ± 0.03),并随肝门阻断时间延长升高越明显,肠系膜淋巴结､肝及门､腔静脉血细菌培养出现阳性,且随肝门阻断时间延长阳性率升高越明显,培养出阳性细菌主要为大肠杆菌｡在肝门阻断20､30 min下肝硬化大鼠比非肝硬化大鼠门､腔静脉血内毒素浓度升高更明显(P < 0.01),出现细菌移位阳性率也更高｡【结论】 大鼠肝门阻断后可导制内毒素血症及肠道细菌移位,这一病理过程在肝硬化情况下更容易出现,并且随肝门阻断时间延长而更加明显｡ 相似文献
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【目的】 探讨高容量血液滤过(HVHF)在肝移植术后因严重感染引起多器官功能障碍综合征(MODS)患者中的应用｡ 【方法】 分析2003年12月至2008年12月肝移植术后因感染引起MODS进行连续性血液净化治疗74例患者的临床资料,根据超滤率是否大于35 mL/kg/h分为HVHF组(49例)和连续性静脉-静脉血液滤过(CVVH)组(25例)｡记录治疗前和治疗后24 h､48 h､72 h APACHⅡ评分､电解质､血流动力学和呼吸功能各项指标,以及临床转归｡分别对组内治疗后各时间点与治疗前以及两组间各时间点之间的观察指标进行比较｡ 【结果】 HVHF组患者,APACHⅡ评分､乳酸､肌酐､心率､多巴胺用量､气道平均压和气道峰压､氧合指数等指标在治疗后24 h､48 h､72 h较治疗前明显下降(P < 0.05)｡CVVH组患者,APACHⅡ评分､乳酸､气道平均压和气道峰压值治疗前后无明显变化(P > 0.05),心率､多巴胺用量和氧合指数虽较前有所改善,但程度均不如HVHF组(P < 0.05)｡HVHF组死亡率为59.2%(29/49),CVVH组为84.0%(21/25),两者具有统计学差异(χ2 = 4.652,P = 0.031)｡【结论】 HVHF通过维持机体内环境的稳定,为其他治疗创造有利条件,有助于提高肝移植术后危重患者的生存率｡ 相似文献
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【目的】 探讨CTLA-4Ig融合蛋白对高脂饮食饲养的载脂蛋白E基因缺陷小鼠(ApoE-/-)动脉粥样硬化病变的抑制作用｡【方法】 25只10周龄ApoE-/-小鼠,高脂饮食饲养4周后,随机取5只验证AS病变(对照组);剩余20只随机分为4组(每组5只),继续高脂饮食饲养,分别采用CTLA-4Ig､PBS､IgG1腹腔注射,第4组不予处理;8周后取小鼠主动脉进行病理学检查,检测AS相关指标,包括斑块面积/管腔面积比､血管内膜/中膜厚度比,斑块内脂质､胶原和平滑肌细胞含量｡【结果】 高脂饮食饲养4周后,出现明显AS病变｡继续高脂饮食饲养8周,形成典型AS斑块,CTLA-4Ig组､PBS组､IgG1组和空白组的斑块面积/管腔面积比分别为0.27 ± 0.08､0.40 ± 0.08､0.43 ± 0.08和0.46 ± 0.10,较4周时(0.05 ± 0.01)明显增加(P < 0.05),4组的血管内膜/中膜厚度比分别为2.6 ± 0.6､6.0 ± 0.9､5.7 ± 0.8和5.9 ± 0.6,高于对照组(0.5 ± 0.1,P < 0.05),4组斑块内脂质含量(%)分别为26.0 ± 3.0､40.8 ± 5.7､40.6 ± 3.0和43.2 ± 5.7较4周时明显增加(7.2 ± 1.4,P < 0.05 )｡采用CTLA-4Ig进行干预后,其斑块面积/管腔面积比､血管内膜/中膜厚度比和斑块内脂质含量显著低于PBS､IgG1和空白处理组(P < 0.05),而后3组间上述指标的差异无统计学意义(P > 0.05);CTLA-4Ig组斑块内胶原含量(16.0 ± 1.1)% 高于其他3组[(8.6 ± 1.2)%､(9.2 ± 1.5)%和(9.0 ± 1.3)%,P < 0.05)],其斑块内平滑肌细胞含量(11.8 ± 1.0)%明显高于其他3组[(7.8 ± 0.8)%､(7.5 ± 0.9)%和(7.3 ± 0.7)%,P < 0.05)],另外3组间上述指标的差异无统计学意义(P > 0.05)｡【结论】 CTLA-4Ig融合蛋白能够阻抑高脂饮食饲养的ApoE-/- 小鼠动脉粥样硬化进程, 其增加斑块内血管平滑肌细胞生成胶原作用有助增加AS斑块的稳定性｡ 相似文献
11.
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. 相似文献
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Jiageng Zhu Jun Li Ruipeng Ji Jianghao Su Mingshun Shen Zhigang Cao 《南京医科大学学报(自然科学版)》2007,21(2):125-128
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. 相似文献
13.
Tao Ye * Zhi-quan Liu Jian-jun Mu Xi-han Fu Jun Yang Bao-lin Gao and Xiao-hong Zhang Department of Cardiology First Hospital of Xi'an Jiaotong University Xi'an Hanzhong Cardiovascular Institute Hanzhong 《中国医学科学杂志(英文版)》2004,19(4):248-251
Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure. 相似文献
14.
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. 相似文献
15.
Jingming Zhu Ningning Hui Xiuhong Jiang Huaxing Zhang Chengzhang Fu 《南京医科大学学报(自然科学版)》2007,21(6):386-389
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. 相似文献
16.
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. 相似文献
17.
Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P. 相似文献
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Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine. 相似文献
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Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center. 相似文献
20.
Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine 
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下载免费PDF全文 A clinical guideline for the therapeutic interventions of integrative medicine may be defined as a written document which states a series of recommendations on therapeutic interventions of integrative medicine for a special disease or condition. The guideline may provide assistance to medical professionals in making clinical decisions aimed at improving the clinical outcome of patients and reducing the costs of medical care（~＇4~. Recommendations issued by a guideline should be based on the best available evidence in both Western and Chinese medicine. For fulfilling this purpose, the development of clinical guidelines for therapeutic interventions in the field of integrative medicine should follow scientific principles and undergo a rigorous processes. 相似文献