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1.
【目的】 为了比较纯氧与空气复苏对缺氧新生大鼠的复苏效果,探讨新生大鼠肝细胞凋亡及Bcl-2､Bax蛋白表达在缺氧复苏中的作用｡ 【方法】 采用SD新生大鼠建立缺氧模型,并分组进行纯氧与空气复苏｡实验分为正常对照组(无预缺氧和复氧实验)､纯氧复苏组(PO组) 和空气复苏组(RA组) ｡取肝组织,HE 染色光镜观察肝组织病理变化,TUNEL法测定肝细胞凋亡指数,免疫组化检测肝组织Bcl-2､Bax蛋白的表达情况｡【结果】 与正常对照组相比,PO组可见肝细胞肿胀,肝细胞有部分细胞器缺失,肝细胞呈明显的片状坏死,有炎性细胞浸润,肝细胞索排列紊乱｡RA组肝细胞索排列基本正常, 肝细胞损伤程度,炎细胞浸润及肝细胞肿胀都较PO组轻｡PO 24 h及72 h亚组的细胞凋亡指数分别为(11.2 ± 3.2)%和(9.2 ± 1.0)%,RA 24 h及72 h亚组的细胞凋亡指数分别为(9.0 ± 2.9)%和(7.4 ± 1.9)%,均低于相应的PO各亚组(P < 0.01)｡PO 24 h及72 h亚组Bcl-2蛋白表达(11.55 ± 1.06)%和(10.49 ± 1.03)%, 均低于对应的RA各亚组,RA 24 h及72 h亚组Bcl-2蛋白表达分别为(13.06 ± 2.35)%和(11.71 ± 1.69)%｡PO 24 h及72 h亚组Bax蛋白表达分别为(4.81 ± 1.13)%和(4.62 ± 0.79)%,均高于对应的RA各亚组,RA 24 h及72 h亚组Bax蛋白表达分别为(4.08 ± 0.31)%和(3.88 ± 0.48)%｡PO组与RA组的细胞凋亡指数､Bcl-2及Bax蛋白表达及Bcl-2/Bax比值差异具有统计学意义(P < 0.01), 各组内亚组之间差异无统计学意义(P > 0.05)｡ 【结论】 纯氧复苏较空气复苏后新生大鼠肝细胞的凋亡更严重｡纯氧复苏促进Bax基因的表达上调,空气复苏可使凋亡抑制基因Bcl-2表达上调,暗示纯氧复苏对新生大鼠肝的损伤要重于空气复苏｡ 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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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】 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】 初步探讨肾移植患者来氟米特(Lef)血药浓度变化规律｡ 【方法】 对我院9例采用包括Lef的三联免疫抑制方案的尸肾移植患者进行首次服药后的药代动力学监测以及第6､13､16､21天的谷浓度监测｡ 【结果】 首次给药后的药代动力学参数Cmax为(4.0 ± 1.4) ?滋g/mL,Tmax为(11±6)h,AUC0 ~ 24 h为(72 ± 31) mg•d-1•L -1｡连续服药后第6､13､16及21天谷浓度(μg/mL)平均值分别为10 ± 5､15 ± 5､20 ± 9及28 ± 8｡患者术后sCr恢复正常时间为2 ~ 7(4.1 ± 1.7) d｡无患者退出试验｡发生急性排斥1例次,肝功能损害2例次｡ 【结论】 肾移植患者口服Lef的药代动力学特点为首次给药峰浓度低,达到稳态时间较慢,吸收个体化差异较大｡有必要对其长期的药代动力学特性进一步探讨,优化患者的用药方案｡ 相似文献
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【目的】 探讨ghrelin在小于胎龄儿发生矮身材中的作用｡【方法】 采用母鼠妊娠期饥饿法,建立SGA动物模型｡根据新生鼠及其生后第4周时体质量和/或身长分为有生长追赶SGA组､无生长追赶SGA组和正常对照组即适于胎龄儿(AGA)鼠组;幼鼠每周测量体质量和鼻肛长｡4周龄时测定24 h尿GH排泄率 ｡分别于4周､8周和12周测定血清ghrelin､IGF-1､IGFBP3浓度｡【结果】 正常SD雄性大鼠在生后4周和12周的血ghrelin水平分别为(1.6 ± 0.3) ng/mL和(1.8 ± 0.5) ng/mL,无显著性差异(P > 0.05)｡4周龄雄性SGA鼠血ghrelin水平显著高于正常大鼠,但24小时尿GH排泄量无相应升高,且两者间无相关性;但ghrelin水平与血IGF-1､血IGFBP3水平呈有意义的负相关,分别r = -0.333,P = 0.031;r = -0.338, P = 0.028｡12周龄有生长追赶组SGA大鼠的血ghrelin水平(1.4 ± 0.5) ng/mL与对照组比较明显下降(P < 0.05),SGA组血IGF-1 和IGFBP3水平显著降低,且无生长追赶组更低(均P < 0.05)｡24 h尿GH排泄量各组间未见差异(P > 0.05)｡【结论】 SGA大鼠可能存在ghrelin抵抗并与GH抵抗汇同加重了对SGA生长的损害｡ 相似文献
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【目的】 观察并探讨硬脂酸纳米吗啡(SLN-M)单次注入大鼠硬膜外腔后的镇痛效应及用药后的药代动力学特点｡ 【方法】 SD雄性大鼠40只,随机分为4组,每组10只｡A组(对照组):经硬膜外腔给予SLN;B组:给予0.5 mg普通吗啡;C1组与C2组:分别给予含0.5及2 mg吗啡的SLN-M,上述药品均用生理盐水溶解至50 μL｡用药后测定热痛阈值评价镇痛效果(以最大镇痛效应MPE表示),并在不同时点测量脑脊液(CSF)和血浆内的吗啡浓度以进行药代动力学研究,同时观察药物副作用｡ 【结果】 C1及C2组单次使用SLN-M后最大镇痛强度(MPE)与B组相比差异无统计学意义(97.5 ± 28.4､99.9 ± 20.5 VS 98.2 ± 30.5; P > 0.05),但达到最大镇痛强度的时间比B组显著延长[(1.24 ± 0.29)h, (0.93 ± 0.26)h VS (0.54 ± 0.21)h; P < 0.05)],镇痛持续时间也显著延长[(68.6 ± 9.7)h､(83.3 ± 11.6)h VS (9.3 ± 2.3)h; P < 0.05]｡C1与C2组动物CSF吗啡浓度达峰时间明显长于B组[(6.0 ± 1.2)h､(3.0 ± 0.4)h VS (5.0 ± 0.9)min; P < 0.05],其峰值浓度也显著低于B组[(2768 ± 1005)ng/mL､ (3274 ± 1095)ng/mL VS (8612 ± 3129)ng/mL; P < 0.05],B组动物CSF内药物储留时间明显缩短[(3.84 ± 0.55)h VS (88 ± 10)h､(101 ± 15)h; P < 0.05]｡B组动物呼吸抑制和僵直症及角膜反射消失的发生率要高于C1与C2组(P < 0.05)｡ 【结论】 药物动力学证据表明:硬膜外腔单次给予SLN-M后通过持续缓慢释放吗啡发挥长时效镇痛作用,而且副作用比普通吗啡明显降低｡ 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】 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
10.
PARP抑制对小鼠结肠癌细胞侵袭能力的影响 总被引：2，自引：0，他引：2
【目的】 探讨多聚(ADP*9鄄核糖)聚合酶(PARP)抑制对小鼠结肠癌CT26细胞体外运动侵袭能力的影响及机制｡ 【方法】细胞运动及侵袭试验观察PARP抑制对CT26细胞运动侵袭能力的影响;Western Blot和明胶酶谱法分别检测PARP抑制对CT26细胞基质金属蛋白酶MMP*9鄄2､MMP*9鄄9表达和活性的影响｡【结果】 5*9鄄AIQ处理组CT26细胞运动迁移率(70% ± 7%)和侵袭率(63% ± 10%)较5*9鄄AIQ未处理组(100% ± 7%､100% ± 11%)均减弱(P < 0.001)｡5*9鄄AIQ处理组CT26细胞MMP*9鄄2､MMP*9鄄9表达(64% ± 12%､72% ± 12%)较5*9鄄AIQ未处理组(分别为100% ± 11%,100% ± 21%)明显减弱(P=0.0003､0.0163)｡且CT26细胞培养上清液中MMP*9鄄2､MMP*9鄄9活性,在5*9鄄AIQ处理组 [积分吸光度(IA)分别为0.34 ± 0.07,0.40 ± 0.05] 与未处理组(0.48 ± 0.10､0.61 ± 0.08)之间同样存在明显差别(P=0.0248､0.0013)｡【结论】 实验结果提示,PARP抑制剂5*9鄄AIQ可降低CT26细胞的运动及侵袭能力,其可能与 5*9鄄AIQ抑制PARP进而降低CT26细胞肿瘤侵袭转移相关因子MMP*9鄄2和MMP*9鄄9的表达和活性有关｡ 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
12.
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.
The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases 总被引：1，自引：0，他引：1
Shaoqin Chen Shengquan Zou Qibao Dai Peisheng Huang Weihua Cai Hong Li 《南京医科大学学报(自然科学版)》2007,21(6):398-401
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. 相似文献
18.
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
19.
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
20.
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