板蓝根有效组分的抗病毒活性研究

目的 考察板蓝根不同部位提取物,即30％醇沉多糖Ⅰ、50％醇沉多糖Ⅱ、70％醇沉多糖Ⅲ,及板蓝根水提取液的大孔树脂水洗脱部位Ⅳ、10％醇洗脱部位Ⅴ、30％醇洗脱部位Ⅵ、50％醇洗脱部位Ⅶ,以及分得的单体落叶松脂素-4,4'-二-O-β-D-二葡萄糖苷(CB) Ⅷ、异落叶松脂醇Ⅸ的抗甲型流感病毒A/PR8/34(H1N1)活性.方法 采用抗甲型流感病毒A/PR8/34(H1N1)体内实验,通过计算肺指数、肺指数抑制率等,综合检测板蓝根提取部位及单体化合物的抗甲型流感病毒作用.结果 Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ、Ⅷ及Ⅸ可明显延长甲型流感病毒感染小鼠存活天数,与病毒模型组比较,具有显著性差异(P＜0.05),Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ、Ⅷ及Ⅸ可减少感染小鼠死亡率;同时Ⅱ、Ⅵ、Ⅶ及单体Ⅷ可明显降低肺指数(P＜0.05),肺指数抑制率分别为31.4％、28.5％、30.5％和34.0％.结论 板蓝根有效组分Ⅱ-Ⅸ对甲型流感病毒感染小鼠具有较好的保护作用,提示其中化合物CB可作为抗病毒的主要有效及指标性成分.     

板蓝根不同提取物抗甲型流感病毒的实验研究

目的:观察板蓝根不同提取物抗甲型流感病毒的作用.方法:采用用血凝滴度640以上的甲型流感病毒A/PR/8/34的尿囊液30μ1滴鼻感染小鼠,观察小鼠感染甲型流感病毒后发病及死亡情况.结果:板蓝根提取物2号1.0 g/kg剂量组和板蓝根提取物3号1.67g/kg剂量组可明显延长甲型流感病毒感染小鼠存活天数和降低死亡率,与病毒对照组比较具有显著性差异(P<0.05,P<0.01).板蓝根提取物1号0.67g/kg剂量组和板蓝根提取物4号1.12g/kg剂量组可显延长甲型流感病毒感染小鼠存活天数,与病毒对照组比较具有显著性差异(P<0.05).结论:板蓝根提取物2号组和板蓝根提取物3号组具有较好的抗甲型流感病毒的作用.     

金银花提取物抗病毒的作用研究

目的:探讨金银花提取物的抗病毒作用.方法:采用甲型流感病毒(A/PR/8/34)感染小鼠,观察肺指数抑制率和保护率.结果:金银花提取物20g/kg和40g/kg剂量组对甲型流感病毒(A/PR/8/34)感染小鼠具有明显的保护作用,保护率分别为58.7%和69.0%,能明显降低甲型流感病毒感染小鼠的肺指数值,肺指数抑制率分别为14.6%和18.7%.与病毒对照组比较具显著性差异(P<0.05,P<0.01),组织病理学检查结果显示小鼠病毒性肺炎,主要表现为化脓性支气管炎.小叶性肺炎和间质性肺炎.金银花提取物各剂量组可明显减轻肺部病变.结论:金银花提取物具有抗甲型流感病毒感染的作用.     

板蓝根颗粒对甲型流感病毒小鼠的作用

目的测定板蓝根颗粒抗流感病毒的药效作用。方法 A/California/7/2009(CA7)病毒滴鼻感染BALB/c小鼠观察14d,观察板蓝根对甲型H1N1流感病毒感染小鼠的保护作用,计算小鼠存活率、存活天数以及延长生命率。感染的小鼠第5天每组小鼠处死一半,取肺组织,观察板蓝根对甲型H1N1流感病毒感染小鼠肺组织的保护作用。结果板蓝根可明显延长甲型H1N1流感病毒感染小鼠的存活天数并提高存活率,病理结果显示板蓝根对甲型H1N1流感病毒感染的小鼠的肺组织有一定程度的保护作用,与模型组比较差异显著(P0.05)。结论板蓝根颗粒对甲型H1N1流感病毒感染的小鼠有较好的保护作用。     

板蓝根提取物抗流感病毒FM_1的作用

目的研究板蓝根提取物抗流感病毒FM1的作用。方法昆明种小鼠滴鼻感染流感病毒FM1后腹腔注射板蓝根提取液,观察板蓝根提取液的抗病毒作用。结果与阴性对照组相比,板蓝根组肺指数降低(P&lt;0.05),体重增加值高(P&lt;0.05)。结论板蓝根提取物有一定的抗流感病毒作用。     

银芩抗感微丸对流感病毒PR8株感染小鼠的治疗作用

目的:研究银芩抗感微丸对甲型H1N1流感病毒PR8株感染小鼠的治疗作用。方法:在滴鼻感染正常小鼠建立流感病毒肺感染模型的基础上,检测小鼠的肺指数与肺病毒载量。结果:银芩抗感微丸各剂量组均可明显降低甲型H1N1流感病毒PR8株感染小鼠的肺指数与肺病毒载量。结论:银芩抗感微丸对甲型H1N1流感病毒PR8株感染小鼠具有一定的治疗和保护作用。     

小鼠非清髓性半相合骨髓移植造血的重建

目的：探讨在非清髓性预处理条件下,纯化的供鼠NK细胞对MHC半相合小鼠骨髓移植（BMT）造血重建的影响。 方法：以CB6F₁^H-2d/b（BALB/c^H-2d×C57BL／6^H-2b）小鼠为受者,C57BL／6^H-2b小鼠为供者。60只受者小鼠根据不同照射剂量及不同NK细胞输注量随机分为10组,每组6只,经9.0、7.0、6.0 Gy 3个剂量⁶⁰Co照射。经9.0 Gy照射后分为单纯照射组（Ⅰ）、半相合BMT组（Ⅱ）。经7.0 Gy照射后分为单纯照射组（Ⅲ）、半相合BMT组（Ⅳ）、NK细胞移植1组（Ⅴ）和NK细胞移植2组（Ⅵ）。经6.0 Gy照射后分为单纯照射组（Ⅶ）、半相合BMT组（Ⅷ）、NK细胞移植1组（Ⅸ）和NK细胞移植2组（X）。在照射后4 h移植供鼠骨髓细胞,其中NK细胞移植1组（Ⅴ、Ⅸ）每只受鼠移植前输注纯化供鼠NK细胞1×106,NK细胞移植2组（Ⅵ、X）每只受鼠移植前输注供鼠NK细胞5×10⁵。以血常规、体重、生存期等变化为指标,观察60 d。 结果：①生存期：Ⅰ组为（5.83±0.98）d,其他组小鼠生存期均大于60 d。②移植后第10天时白细胞及血小板计数：Ⅴ、Ⅵ组WBC和PLT分别为（1.05±0.30）×10⁹•L^-1、（53.50±12.11）×10⁹•L^-1及（0.95±0.26）×10⁹•L^-1、（47.17±11.82）×10⁹•L^-1,明显高于Ⅲ、Ⅳ组（P<0.01）;Ⅸ、X组WBC和PLT分别为（0.98±0.34）×10⁹•L^-1、（50.67±12.58）×10⁹•L^-1及（0.88±0.29）×10⁹•L^-1、（45.33±14.36）×10⁹•L^-1,明显高于Ⅶ、Ⅷ组（P<0.05）。 结论：MHC半相合BMT小鼠移植前输注纯化的供鼠NK细胞促进其造血重建。     

银翘柴桂汤抗甲型流感病毒作用的实验研究

目的 观察甲型流感病毒FM1感染小鼠体内流感病毒复制量的不同,研究中药复方银翘柴桂汤体内抗甲型流感病毒的作用.方法 NIH小鼠分为正常对照组、病毒模型组、利巴韦林组及银翘柴桂汤组,除空白对照组外,将甲型流感病毒FM1稀释液滴鼻感染各组小鼠,建立流感病毒感染模型.病毒感染前1 d及感染后4 d,银翘柴桂汤组及利巴韦林组分别灌胃银翘柴桂汤和利巴韦林,病毒感染后第5天处死小鼠,解剖,提取肺组织总RNA,实时荧光定量PCR(RT-PCR)方法测定小鼠肺组织流感病毒复制量.结果 正常对照组无扩增曲线,Ct>30,流感病毒病原体检测阴性;银翘柴桂汤组、利巴韦林组及病毒模型组扩增曲线Ct分别为19.49±1.40、21.02±4.25、15.80±4.18,流感病毒病原体检测阳性.与病毒模型组病毒复制量(128 973.40±18.14)相比,利巴韦林组病毒复制量(33 327.29±19.56)降低,有显著差异性(P<0.05);银翘柴桂汤组病毒复制量(79 104.28±2.52)降低,有显著性差异(P<0.05).结论 建立的流感病毒感染模型可靠,银翘柴桂汤对流感病毒感染小鼠肺内流感病毒增殖具有明显抑制作用,有抗流感病毒作用.     

天麻甙元同系物与同型物的合成及其中枢镇静抗惊活性

以天麻甙元为先导化合物,合成了其同系物9种(Ⅰ—Ⅸ),同型物5种(Ⅹ—XIV)。并进行了抗戊四氮惊厥活性筛选,其中化合物Ⅱ、Ⅲ、Ⅳ、Ⅴ、Ⅵ、Ⅶ、Ⅷ、Ⅸ的抗惊活性为天麻素的1.3～2倍,且有显著性差异。α-第二丁基-对羟基苄醇(Ⅶ)治疗指数达8.7,极有希望开发成为一新结构类型、低毒性的中枢镇静药。     

板蓝根抗甲1型流感病毒活性物质的初筛研究

[目的]观察不同提取工艺及方法制备的板蓝根样品的抗流感病毒作用,以筛选板蓝根中抗流感病毒的有效成分及活性物质.[方法]于狗肾细胞(MDCK)上接种人甲1型流感病毒PR8株(A/PR/8/34,H1N1),采用细胞病变抑制法(CPE法),在不同试验策略下(保护、治疗模式)评价不同提取工艺及方法制备的板蓝根样品的体外抗流感...     

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.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

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.     

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.     

Scientific principles and rigorous processes should be followed in developing clinical guidelines for therapeutic interventions of integrative medicine

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.