体外循环患者T细胞亚群及E花环形成的动态观察

抗人T细胞单克隆抗体(McAb)可识别人T细胞表面抗原决定簇。其中CD_3 McAb可与外周血全部成熟T细胞反应;CD_4 McAb可与T辅助/T诱导(TH/Ti)亚群反应;CD_8 McAb可与T杀伤/T抑制(Tc/Ts)     

RSV McAb在喘憋性肺炎早期快速诊断中的应用

本实验首先将59份婴幼儿细支气管炎和肺炎的咽拭子标本接种到单层细胞上增毒,以RSV McAb为捕捉抗体,用ELISA双抗体夹心法检测增毒后的标本。建立了RSV McAb快速捕捉特异性抗原——ELISA双抗体夹心法。其中38份获阳性结果,检出阳性率为64.4%(38/59),与病毒分离结果阳性的符合率为100%。     

荔枝核黄酮类化合物体外抗呼吸道合胞病毒的作用

目的: 探讨荔枝核黄酮类化合物体外抗呼吸道合胞病毒(RSV)的作用. 方法: 采用细胞培养技术,以病毒唑为阳性对照,观察比较荔枝核黄酮类化合物对RSV引起的细胞病变(CPE)的抑制作用. 结果: 荔枝核黄酮类化合物半数中毒浓度(TC50)为152.9 mg/L,其抗RSV的半数有效浓度(IC50)为58.6 mg/L,治疗指数(TI)为2.6,体外抗RSV作用与病毒唑相当,且对RSV抑制作用存在明显的量效关系. 结论: 荔枝核黄酮类化合物在Hep-2细胞中对呼吸道合胞病毒有抑制作用.     

连翘抑制呼吸道合胞病毒作用的实验研究

目的 探讨连翘在细胞培养中抗呼吸道合胞病毒(RSV)的作用。方法 采用细胞培养技术,以病毒唑为阳性对照药,比较观察连翘水提液对RSV引起的细胞病变(CPE)的抑制作用。结果 连翘半数中毒浓度(TC50)为7．25mg/ml,其抗RSV的半数有效浓度(EC50)为0．15mg/ml,治疗指数(T1)为48．33,且对RSV抑制作用存在明显的量效反应关系;于感染RSV后0、2、4、6、8^加入连翘水提液均有抑制RSV活性作用。结论 连翘在Hela细胞中对呼吸道合胞病毒有抑制作用。     

轮状病毒单克隆抗体的研究和鉴定

运用杂交瘤技术,制备出7株分泌抗人轮状病毒短型S_2株单克隆抗体的杂交瘤,其中6株分泌IgG_(2a),1株分泌IgG_(2b)抗体。7株杂交瘤培养上清的免疫荧光抗体(IFA)滴度为1:32～256,腹水IFA滴度为1:8000～25600。双夹心ELISA腹水抗体滴度达10~(-4)～10~(-6)。7株McAb均与HSV、CMV、RSV、ADV等其它常见病毒无交叉反应。7株McAb均能与HRV长型Wa株反应,滴度为10~(-3)～10~(-6)。将其中二株或数株McAb混合后用ELISA检测其相应的OD值较每一单株为高,但相加指数(AI)值均在10%左右。结果表明,7株McAb均属RV群特异性抗体,但各自作用的抗原决定簇可能稍有差异。     

抗乙型肝炎病毒表面抗原单克隆抗体的研究——12株杂交瘤细胞的建立及其分泌抗体的分析

本文报道12株分泌抗乙型肝炎病毒表面抗原单克隆抗体(HBsAg McAb)杂交瘤细胞的建株及其 McAb 性质的分析结果,用 ID、CEP、PHA 和 ELISA 等四种方法均测得较高水平的McAb。杂交瘤细胞培养液中 McAb 的 PHA 效价为1:80～1:320,由杂交瘤诱生的小鼠腹水 McAb的 ID 和 CEP 效价可高达1:3,200～6,400,PHA 和 ELISA 滴度分别为10~(-4)～10~(-5)和10~(-5)～5×10~(-7)。将这些腹水以 PBS 稀释到 10~(-5),分别与~(125)I-HBsAg(2×10~4cpm)结合,其结合率为52.8～68.4%.12个 McAb 的特异性均良好,其中1个为抗“HBs/d”亚型抗体,其余的均为抗“HBs/a”型特异性抗体。这些 McAb 均属小鼠 IgG_1亚类。选出其中3个 McAb 用于制备 HBsAg 诊断试剂,获得良好结果。     

大黄蒽醌类化合物体外抗呼吸道合胞病毒作用的研究

目的:探讨大黄蒽醌类化合物(Rhubarb Anthraquinone Analogues, RAA)在细胞培养中抗呼吸道合胞病毒(RSV)的作用.方法:采用细胞培养技术,以病毒唑为阳性对照药,比较观察大黄蒽醌类化合物对RSV引起的细胞病变(CPE)的抑制作用.结果:RAA半数中毒浓度(TC50)为209.7 mg/L,其抗RSV的半数有效浓度(IC50)为96.7 mg/L,治疗指数(TI)为2.3,且对RSV抑制作用存在明显的量效反应关系.结论:RAA在Hep-2细胞中对呼吸道合胞病毒有抑制作用.     

表没食子儿茶素没食子酸酯对呼吸道合胞病毒的抑制作用

目的:为探讨表没食子儿茶素没食子酸酯(EGCG)体内和体外抗呼吸道合胞病毒(RSV)作用。方法:在体外以不同浓度的EGCG分别作用于RSV复制周期的3个阶段,用CPE法观察EGCG抑制RSV的致细胞病变作用,用MTT法检测EGCG作用RSV的病毒抑制率;在体内建立RSV感染的BALB/c小鼠的动物模型,通过观察肺外观和HE染色镜下观察、计算肺指数、实时定量RT-PCR检测RSV核酸水平和空斑试验检测肺组织匀浆病毒滴度,探讨EGCG对RSV感染的保护作用。结果:在体外,EGCG对RSV有抗生物合成作用和预防作用,但是无直接杀伤作用。在体内,口服EGCG能够减少RSV感染的BALB/c小鼠肺组织病变程度,肺指数、RSV核酸水平表达和病毒滴度较RSV组明显降低。结论:EGCG在体内外均具有较好的抗RSV感染与复制作用。     

晚期氧化蛋白产物抗体的制备和鉴定

目的 制备和鉴定抗人晚期氧化蛋白产物(AOPPs)单克隆抗体(McAb).方法 用次氯酸(HOCl)和纯化的人血白蛋白(HSA)孵育获得AOPPs-HSA,取凝胶层析纯化后的第1峰免疫BALB/c小鼠,采用杂交瘤技术制备抗AOPPs-HSA的McAb,用间接ELISA、Western blot鉴定其特异性及亚类.结果 成功筛选出3株稳定分泌抗AOPPs,1株既抗HSA又抗AOPP的McAb杂交瘤细胞株,其分泌抗体亚类3株为IgGl,1株为IgG2b,间接ELISA和Western blot证明制备的抗体可以特异地和天然或体外制备的AOPPs结合.结论 获得抗人AOPPs-HSA的McAb细胞株4株,为进一步研究AOPPs生物学活性及其相关疾病的诊断和预后奠定基础.     

抗病毒Ⅰ号中药有效部位体外抗呼吸道合胞病毒作用

目的　了解抗病毒Ⅰ号中药有效部位 (AD1)对呼吸道合胞病毒 (RSV)的抑制作用。方法　采用细胞培养技术 ,以病毒唑为阳性对照药 ,比较观察AD1对RSV的抑制作用。结果　AD1的半数中毒浓度 (TC50 )为 2 5 .98mg/ml,抗RSV的半数有效浓度 (EC50 )为 0 .75 8mg/ml,治疗指数 (TI)为 34.2 9,且对RSV抑制作用存在明显的量效反应关系 (P <0 0 1)。感染RSV 2h、6h、12h后加药均可抑制RSV活性 (P <0 .0 1)。结论　AD1在Hela细胞中对RSV有明显抑制作用     

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.     

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.