氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

国产伊布利特治疗心房颤动和扑动的有效性及安全性系统评价

目的评价国产伊布利特与普罗帕酮对治疗心房颤动和扑动的有效性及安全性。方法计算机检索CBM(1978～2011.10)、VIP(1989～2011.10)、CNKI(1994～2011.10)和WanFang Data(1998～2011.10),查找所有有关国产伊布利特与普罗帕酮治疗心房颤动和扑动的临床随机对照试验(RCT)。对符合纳入标准的RCT,由两位评价员按Cochrane系统评价的方法,独立进行资料提取、质量评价并交叉核对后,采用RevMan 5.0软件对数据进行Meta分析。结果最终纳入16个研究,1 196例患者。Meta分析结果显示:与普罗帕酮相比,①在疗效方面:国产伊布利特90 min内、4 h及24 h内房颤、房扑总体转复率更高[OR分别为3.32、2.69、3.08,P均<0.0001],亚组分析结果显示90 min内房颤转复率及90 min内房扑转复率也更高,且差异有统计学意义;转复时间方面更短[MD=–25.12,95%CI(–30.43,–19.82),P<0.000 01];②在安全性方面,两者致心律失常发生率差异有统计学意义[OR=3.15,95%CI(1.97,5.05),P<0.000 01];其他不良反应发生率差异亦有统计学意义[OR=0.16,95%CI(0.08,0.33),P<0.000 01]。结论现有临床证据表明,国产伊布利特与普罗帕酮相比,其治疗房颤、房扑可取得较好疗效,能明显提高转复率,缩短转复时间,致心律失常发生较为常见。由于纳入研究方法学质量、样本量所限,该结论尚需大样本、高质量的随机对照试验进一步证实。     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

氨基胍与左旋硝基精氨酸甲酯在兔心脏骤停复苏中的比较

Objective To observe the changes of nitric oxide (NO) levels in plasma during cardiopul-monary resuscitation (CPR) and to compare the effects of aminoguanidine (AG) and NG-nitro-L-arginine methyl ester (L-NAME) on CPR. Method This was a prospective, randomized animal study performed at the Function Laboratory of Lanzhou University. Cardiac arrest was electrically induced and was left untreated for 5 min. After performing chest compression for 1 min, 40 domestic rabbits were divided into four groups (n = 10) to receive ei-ther 20 mg/kg AG, 25 mg/kg L-NAME, 0.02 mg/kg epinephrine or 2 ml saline placebo before defibrillation. Successfully resuscitated rabbits were observed for a further 4 h. Hernodynamics variables and cardiac functions were monitored with appropriate instrumentation. Arterial blood NO levels were examined at baseline, at the end of 1 min chest compression and at 15, 30, 60 and 120 min after survival. Repeated measures analysis of variance was used to determine statistical significance between groups. Results During chest compression, the mean + stan-dard deviation coronary perfusion pressure was higher in the AG group (40±10 mmHg) than in the L-NAME group (34±8 mmHg; P =0.001) and was higher in both groups with the control group (20±5 mmHg; both P =0.000). Left ventricular + dp/dtmax and- dp/dtmax were higher in the AG group than in the L-NAME group. In the surviving rabbits, the left ventricular + dp/dtmax and - dp/dtmax were higher in the AG and L-NAME groups than in the epinephrine and control groups and were higher in the AG group (4783±912, 4409±827 mmHg/s)than in the b-NAME group (3554±847, 3398±764 mmHg/s; P = 0.001 and 0.023, respectively). Conclu-sions Both AG and L-NAME increased the coronary perfusion pressure, and improved left ventricular systolic and diastolic function during CPR and prevented post-resuscitation myocardial dysfunction. However, AG was signifi-canfly superior to L-NAME.     

槲皮素和姜黄素对脓毒症大鼠炎症因子的影响

目的 探讨槲皮素和姜黄素预处理对脓毒症大鼠肿瘤坏死因子-α(TNF-α)白细胞介素-6 (IL-6 )及核转录因子-κB(NF-κB)的影响.方法 将120 只Wistar 大鼠按随机数字表法分为假手、术组(A 组)模型组(B 组)槲皮素预处理组(C1 组100 mg/kg 、C2 组50 mg/kg)姜黄素预处理组(D1 组100 mg/kg 、D2 组、50 mg/kg)、槲皮素、+姜黄素预处理组(E1 组槲皮素50 mg/kg +姜黄素、100 mg/kg,E2 组槲皮素50 mg/kg +姜黄素50 mg/kg,E3 组槲皮素100 mg/kg +姜黄素50 mg/kg,E4 组槲皮素100 mg/kg +姜黄素100 mg/kg).采用盲肠结扎穿孔术(CLP )复制脓毒症模型;A 组仅开腹分离盲肠而不结扎.各组于制模前灌胃相应药物,A 组和B 组仅灌胃0.1% 二甲基亚砜(DMSO)均每日1 次,连用3d.各组取6 只大鼠记录制模后脓毒症严重程度评分及生存时间;余大鼠于制模后24 h 处死,用,酶联免疫吸附试验(ELISA )测定血清TNF-α、IL-6 水平,荧光定量聚合酶链反应(PCR )测定肝组织核转录因子-κB(NF-κB)mRNA 表达,并分析脓毒症严重程度评分、NF-κB 与TNF-α、IL-6 的相关性.结果 ①B 组术后24 h 脓毒症严重程度评分(分)明显高于A 组(P＜0.05)半数生存时间较C、D、E 组明显缩短(P＜0.05);各药物预处理组术后脓毒症严重程度评分均较B 组明显下降(均,P＜ 0.05),其中E4 组(13.83±1.33 )下降更显著.②B 组TNF-α、IL-6 、NF-κB mRNA 表达均较A 组明显升高(均P＜0.05);与B 组比较,药物预处理组能明显降低TNF-α、IL-6 的浓度和NF-κB mRNA 的表达水平,且各组组内比较差异有统计学意义(均P＜0.05)其中以E4 组下降更显著.③脓毒症严重程度评分与血清TNF-α、IL-6 水平均呈正相关(r 值分别为0.852 、8,均P＜0.01);NF-κB mRNA 与血清TNF-α、IL-6 水平呈正相关(r 值分别为0.852 、0.848,均P＜0.01).结论 槲皮素和姜黄素预处理能明显抑制脓毒症时NF-κB 的表达和炎症反应,随槲皮素及姜黄素剂量增加作用更为显著;且二药合用较单药效果更佳.