鬼箭羽醇提物的抑菌、抗炎作用研究

目的观察鬼箭羽醇提物的抑菌、抗炎作用.方法以金黄色葡萄球菌、大肠埃希杆菌和铜绿假单胞杆菌为供试菌株,采用药敏纸片法观察鬼箭羽醇提物的抑菌、抗炎作用;对氯化钅苦(PC)诱发的小鼠迟发型变态反应 (DTH) 模型,用鬼箭羽醇提物及总黄烷于抗原攻击后给药,观察其对DTH效应.结果鬼箭羽醇提取物能抑制金黄色葡萄球菌和大肠埃希杆菌,且对后者的作用优于前者,而对铜绿假单胞杆菌无抑菌作用;其抗炎作用主要是抑制DTH,且对晚期效应强于早期效应.结论鬼箭羽醇提物具有一定的抑菌、抗炎作用,其总黄烷成分是抑制DTH的有效成分.     

锁阳不同提取物抗氧化活性及对次黄嘌呤/黄嘌呤氧化酶诱导细胞损伤保护作用的比较研究

目的 比较不同锁阳提取物体外抗氧化活性及对次黄嘌呤/黄嘌呤氧化酶(hypoxanthine/xanthine oxidase,HPX/XO)诱导细胞损伤的保护作用.方法 通过建立XO/XTT氧自由基生成体系和XO致尿酸生成反应,以及HPX/XO诱导的细胞氧化损伤模型,分别研究不同锁阳提取物的自由基清除能力,对HPX活性的干预作用,和对氧化损伤细胞的保护作用.结果 100、10、1 μg/ml锁阳乙酸乙酯和甲醇提取物均能显著地清除自由基,而各浓度的锁阳二氯甲烷和水提物没有明显的清除自由基能力.锁阳乙酸乙酯和甲醇提取物对细胞氧化损伤模型显示明显的保护作用,可显著提高细胞存活率,但不能明显抑制XO活性.结论 锁阳抗氧化有效部位主要富集在乙酸乙酯与甲醇提取相中,具有良好的抗氧化作用,清除氧自由基是其主要机制之一.     

田七茎叶提取物对氧自由基的清除作用

用黄嘌呤-黄嘌呤氧化酶体系产生的 O_2~(?)或碱性连苯三酚自氧化产生的 O_2~(?)与鲁米诺作用的化学发光法,测定田七茎叶提取物对氧自由基的清除作用。结果表明:田七茎叶提取物有清除 O_2~(?)作用,且水溶性物清除能力比醇溶性物强。     

锁阳不同提取物抗氧化活性及对次黄嘌呤/黄嘌呤氧化酶诱导细胞损伤保护作用的比较研究

目的比较不同锁阳提取物体外抗氧化活性及对次黄嘌呤/黄嘌呤氧化酶(hypoxanthine/xanthine oxidase,HPX/XO)诱导细胞损伤的保护作用。方法通过建立XO/XTT氧自由基生成体系和XO致尿酸生成反应,以及HPX/XO诱导的细胞氧化损伤模型,分别研究不同锁阳提取物的自由基清除能力,对HPX活性的干预作用,和对氧化损伤细胞的保护作用。结果 100、10、1μg/ml锁阳乙酸乙酯和甲醇提取物均能显著地清除自由基,而各浓度的锁阳二氯甲烷和水提物没有明显的清除自由基能力。锁阳乙酸乙酯和甲醇提取物对细胞氧化损伤模型显示明显的保护作用,可显著提高细胞存活率,但不能明显抑制XO活性。结论锁阳抗氧化有效部位主要富集在乙酸乙酯与甲醇提取相中,具有良好的抗氧化作用,清除氧自由基是其主要机制之一。     

沙棘总黄酮对活性氧自由基的清除作用

用 ESR 自旋捕集技术研究沙棘黄酮(TFH)对活性氧自由基(AOR)的清除作用,并用化学发光(CL)法测定该药对多形核白细胞(PMN)产生 CL 的影响.证明1.7mg/L TFH 对 PMA 刺激 PMN 生成的AOR 有明显清除作用;TFH(0.03～3ml/L)对黄嘌呤/黄嘌呤氧化酶系统生成的 O_2~-有显著剂量依赖性     

戈米辛J对氧自由基的作用

目的　研究戈米辛J(gomisinJ)对氧自由基的作用。方法　采用黄嘌呤/黄嘌呤氧化酶鲁米诺体系和邻苯三酚自氧化体系产生的化学发光检测超氧阴离子自由基,采用Fenton发光体系检测羟自由基。结果　戈米辛J能抑制3种体系的化学发光,对以上3种体系的IC50、IC20及IC50(95%可信限)依次分别为237.7(155.5～363.3)、100.8(88.1～115.3)和1.86(1.60～2.16)μmol/L。结论　戈米辛J具有清除氧自由基的作用,对羟自由基作用尤强     

痛风宁部分提取物对黄嘌呤氧化酶的抑制作用

目的观察痛风宁部分提取物对黄嘌呤氧化酶(xanthine oxidase,XOD)的影响及抗氧化作用。方法通过XOD催化黄嘌呤产生尿酸,采用铁氰化钾还原法测定还原力,分别测定各提取物对反应体系吸光度的影响。结果秦皮乙酸乙酯提取物和秦皮乙醇提取物及威灵仙乙酸乙酯提取物对XOD的抑制作用最强,威灵仙乙酸乙酯提取物的还原能力最强。结论痛风宁部分提取物具有较强的抑制XOD活性作用并具有较强的体外抗氧化活性。     

7种治疗心血管疾病的中成药抗氧自由基作用的研究

利用黄嘌呤/黄嘌呤氧化酶体系或碱性二甲基亚砜生成的O_2~.与鲁米诺作用的化学发光体系,研究7种中成药水提物抗氧自由基的作用。结果表明:7种中成药水提物对酶体系产生的O_2~.都有抑制作用,其中3种对非酶体系产生的O_2~.有抑制作用,而另4种则表现出负的抑制作用。     

氧自由基对胎鼠海马神经元ATPase和SOM的影响及人参皂甙的保护作用

目的 :观察氧自由基对培养的胚胎海马神经元三磷酸腺苷酶 (ATPase)和生长抑素 (SOM)含量的影响以及人参皂甙 (Gin)的抗自由基作用。方法 :在细胞培养第 5天给以黄嘌呤 -黄嘌呤氧化酶 (X- XO)体系建立氧自由基损伤模型 ,并分别同时给以 Gin超氧化物岐化酶 (SOD)以及 Gin SOD,采用组化及免疫组化染色观察各组ATPase及 SOM含量变化。结果 :X- XO组 ATPase及 SOM含量均低于对照组及各实验组 (P <0 .0 1) ,Gin SOD及 ATPase及 SOM含量均高于 Gin及 SOD)组 (P <0 .0 1)。结论 :氧自由基可降低 ATP ase和 SOM含量 ,Gin、SOD可增加 ATPase和 SOM含量 ,二者联合应用优于单独应用。提示 Gin可能具有 SOD样作用或激活体内 SOD作用     

氧自由基对血管内皮细胞周期及其凋亡水平的影响

目的　观察氧自由基对内皮细胞增殖周期和凋亡水平的影响。方法　以黄嘌呤氧化酶作用于黄嘌呤而产生氧自由基 ,经流式细胞仪观察它对培养的内皮细胞细胞周期及凋亡水平的影响。结果　氧自由基作用后 ,内皮细胞增殖 S期比率降低 ,而 G2 - M期比率升高 ,同时诱导了内皮细胞的凋亡。结论　氧自由基在缺血缺氧的病理生理过程中可损伤血管内皮 ,影响内皮细胞的增殖和修复     

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.