桂红胶囊对大鼠急性心肌缺血的保护作用

目的:研究桂红胶囊对实验性大鼠急性心肌缺血损伤的保护作用。方法:采用垂体后叶素(Pit)致大鼠急性心肌缺血模型,观察桂红胶囊对大鼠心电图J点的影响;生化试剂盒检测血清中乳酸脱氢酶(LDH)、肌酸激酶(CK)、超氧化物歧化酶(SOD)的活性及丙二醛(MDA)含量。结果 :桂红胶囊(0.140,0.278,0.556 g/kg)能显著抵抗15 s~2 min时Pit引起的大鼠心电图J点改变(P0.05或P0.01)。桂红胶囊(0.278,0.556 g/kg)能显著降低血清中LDH、CK、MDA含量,增加SOD活性(P0.05或P0.01)。结论:桂红胶囊对大鼠急性心肌缺血具有一定的保护作用。     

参桂胶囊再优化处方对大鼠急性心肌缺血的保护作用

目的:观察参桂胶囊有效成份处方对舌下静脉注射垂体后叶素(pituitrin,PIT)诱发大鼠急性心肌缺血的影响.方法:采用大鼠舌下静脉注射垂体后叶素(0.35 U/kg)造成急性心肌缺血模型,观察各给药组注射垂体后叶素后不同时间点第Ⅱ导联心电图T波变化以及血清乳酸脱氢酶(LDH)、肌酸激酶(CK)含量的变化.结果:参桂胶囊有效成份处方能明显对抗垂体后叶素引起的急性心肌缺血的心电图变化,抑制大鼠血清LDH、CK升高.结论:参桂胶囊有效成份处方组具有显著对抗垂体后叶素致大鼠急性心肌缺血的作用.     

天然和合成冰片组成的复方丹参滴丸药效比较实验研究*

[目的]比较分别由天然冰片和合成冰片组成的复方丹参滴丸抗垂体后叶素(Pit)致大鼠急性心肌缺血的药效.[方法]采用大鼠舌下静脉注射Pit造成急性心肌缺血的方法,观察各给药组对注射Pit后不同时间点Ⅱ导联心电图T波变化百分率(%)、血清乳酸脱氢酶(LDH)、磷酸肌酸激酶(CPK)、超氧化物歧化酶(SOD)、丙二醛(MDA)含量的影响.[结果]天然冰片和合成冰片组成的复方丹参滴丸均能明显改善Pit引起的急性心肌缺血的心电图变化、降低血清CPK活性、MDA的含量,增加血清SOD活性,对LDH未见明显影响.[结论]天然冰片组成的复方丹参滴丸具有抗Pit诱发大鼠急性心肌缺血的作用,与合成冰片组成的复方丹参滴丸比较两者之间无显著差异.     

芒果苷对垂体后叶素诱发小鼠心肌缺血的保护作用

目的观察芒果苷(mangiferin)对垂体后叶素(pituitrin,PIT)诱发小鼠心肌缺血的影响。方法采用腹腔注射PIT 30u/kg建立小鼠急性心肌缺血模型,观察芒果苷对小鼠Ⅱ导联心电图(ECG),心肌超氧化物岐化酶(SOD),丙二醛(MDA)及血清磷酸肌酸激酶(CK)和乳酸脱氢酶(LDH)的影响。结果芒果苷对PIT诱发小鼠Ⅱ导联ECG异常有改善(P<0.05)。芒果苷使心肌SOD活性明显升高,使心肌MDA含量、血清CK及LDH水平降低(P<0.05或0.01)。结论芒果苷对垂体后叶素诱发小鼠心肌缺血的损伤有保护作用。     

瑞香素对垂体后叶素致大鼠急性心肌缺血保护作用的研究

目的：观察瑞香素对垂体后叶素致大鼠急性心肌缺血的保护作用。方法：采用大鼠舌下静脉注射垂体后叶素造成急性心肌缺血模型，心电图检测观察注射垂体后叶素后不同时间点的第Ⅱ导联心电图ST波变化百分率（%），测定血清肌酸激酶同工酶（CK-MB）、超氧化物歧化酶（SOD）和丙二醛（MDA）的含量，并观察各项指标的变化。结果：瑞香素能明显对抗垂体后叶素引起的急性心肌缺血的心电图变化，提高血清SOD活性、降低CK-MB和MDA含量。结论：瑞香素具有显著对抗垂体后叶素致大鼠急性心肌缺血的作用。     

怀牛膝总皂苷抗大鼠急性心肌缺血作用的实验研究

[目的]研究怀牛膝总皂苷（ABS）对垂体后叶素诱发的大鼠急性心肌缺血的影响。[方法]72只大鼠随机分为6组：正常对照组、模型组、复方丹参滴丸组以及ABS高、中、低剂量组,采用尾静脉注射垂体后叶素（Pit）建立大鼠急性心肌缺血模型,观察各给药组注射Pit后心电图的变化,并检测血清中超氧化物歧化酶（SOD）活力,丙二醛（MDA）、肌酸激酶（CK）、乳酸脱氢酶（LDH）含量。[结果]ABS能够明显影响急性心肌缺血的心电图变化,抑制CK、LDH、MDA的升高及SOD活力的降低。[结论]ABS能够显著对抗急性心肌缺血,其作用机制可能与抗脂质过氧化有关。     

葛根素对大鼠急性心肌缺血的保护作用

[目的] 观察葛根素对大鼠急性心肌缺血的保护作用.[方法] SD 大鼠采用尾静脉注射垂体后叶素 (Pit,0.5 U/kg)后观察心电图变化,筛选敏感大鼠随机分为模型组、葛根素组(剂量为4 mg/kg) 和硝酸甘油组(剂量为 0.1 mg/kg);静脉给药 1 min 后,各组大鼠静脉缓慢注射 Pit (2 U/kg) 复制急性心肌缺血模型;观察造模后 15 s、30 s、1 min、5 min、20 min时各组大鼠的心电图变化,并检测血清天门冬氨酸氨基转移酶 (AST)、肌酸激酶(CK)和乳酸脱氢酶(LDH)的含量.[结果] 葛根素能拮抗Pit所致的急性心肌缺血的ST段抬高,降低心率失常的发生率,降低血清 AST、CK、LDH 含量.[结论] 葛根素对垂体后叶素所致大鼠急性心肌缺血具有保护作用.     

天然和合成冰片组成的复方丹参滴丸药效比较实验研究

[目的]比较分别由天然冰片和合成冰片组成的复方丹参滴丸抗垂体后叶素（Pit)致大鼠急性心肌缺血的药效。[方法]采用大鼠舌下静脉注射Pit造成急性心肌缺血的方法，观察各给药组对注射Pit后不同时间点Ⅱ导联心电图T波变化百分率(％)、血清乳酸脱氢酶（LDH)、磷酸肌酸激酶(CPK)、超氧化物歧化酶(SOD)、丙二醛(MDA)含量的影响。[结果]天然冰片和合成冰片组成的复方丹参滴丸均能明显改善Pit引起的急性心肌缺血的心电图变化、降低血清CPK活性、MDA的含量，增加血清SOD活性，对LDH末见明显影响。[结论]天然冰片组成的复方丹参滴丸具有抗Pit诱发大鼠急性心肌缺血的作用，与合成冰片组成的复方丹参滴丸比较两者之间无显著差异。     

大明胶囊对大鼠实验性缺血心肌的保护作用

目的 观察大明胶囊对大鼠实验性急性心肌缺血的保护作用.方法 采用大鼠舌下静脉注射垂体后叶素(Pit)诱发急性心肌缺血模型,观察各组注射Pit后15min内心电图ST段、心率的变化以及6h后血清乳酸脱氢酶(LDH)、超氧化物歧化酶(SOD)、肌酸激酶(CK)浓度的变化.结果 大明胶囊对Pit所致急性缺血性心电图ST段抬高、降低和心率的降低都有明显对抗作用,能明显增加血清SOD的活性,降低CK和LDH的含量(P＜0.05).结论 预防性给予大明胶囊对Pit致大鼠急性心肌缺血具有明显的保护作用.     

沙丁胺醇对急性心肌缺血模型大鼠心电图及血清心肌酶谱的影响

目的:探讨β2肾上腺素受体激动剂沙丁胺醇(Salbutamol)对急性心肌缺血模型大鼠心电图及血清天冬氨酸转氨酶(AST)、乳酸脱氢酶(LDH)、肌酸激酶(CK)和超氧化物歧化酶(SOD)表达的影响。方法:采用舌下静脉注射垂体后叶素(1U/kg,6U/ml)的方法制备大鼠急性心肌缺血模型。静脉滴注5%葡萄糖500ml含沙丁胺醇(Salbutamol)0.18mg(滴速0.5ml/min),记录大鼠心电图J点位移及T波变化。测定血清AST、LDH、CK和SOD的含量。结果:β2受体激动剂Salbutamol恢复了由急性心肌缺血造成的心电图J点位移及T波变化值的异常改变,降低了心肌缺血大鼠血清AST、LDH和CK的水平,升高了血清SOD含量。结论:Salbutamol对急性心肌缺血具有一定的保护作用,该作用可能与降低肿瘤坏死因子-α的表达有关。     

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.     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

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.     

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.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

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.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

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.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

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.