外周血中miRNAs表达水平对精神分裂症的诊断价值

目的:探讨外周血中miRNAs的表达水平对精神分裂症的诊断价值.方法:选取40例精神分裂症患者作为观察组,40例健康体检者作为对照组.实时定量聚合酶链反应(RT-qPCR)鉴定精神分裂症患者外周血液中miRNAs表达情况.通过受试者工作特征曲线(ROC曲线)评价miRNAs的诊断效能.采用可视化和集成发现数据库(DAVID)工具对miRNAs靶基因进行基因功能和京都基因和基因组百科全书(KEGG)通路富集分析.结果:两组受试对象外周血miR-30d-5p、miR-181b-3p、miR-652-5p、miR-193a-3p、miR-181b-5p、miR-346、miR-572、miR-7-5p、miR-564、miR-548d-3p和miR-30a-5p表达水平比较,差异无统计学意义(P>0.05);观察组miR-34a-5p、miR-449a和miR-22-3p表达水平高于对照组(P<0.05);miR-34a-5p、miR-449a和miR-22-3p的ROC曲线下面积(AUC)值分别为0.763,0.659和0.725,三者联合检测的AUC值为0.802.miR-34a-5p、miR-449a和miR-22-3p靶基因与突触结构和神经功能密切相关,三者共同靶基因SATB2和PER2在精神分裂症患者中异常表达(P<0.05).结论:miR-34a-5p、miR-449a和miR-22-3p在精神分裂症中异常表达,三者及其靶基因结合有望作为精神分裂症诊断规范和治疗监测的生物标记物.     

MiR-378a-5p促进肝癌细胞增殖和侵袭及其在早期肝癌诊断中的作用

目的:探讨血清miR-378a-5p表达对早期肝癌诊断价值及其对Huh-7细胞增殖和侵袭影响.方法:应用Real-time PCR检测64例早期肝癌患者和64例常规体检健康志愿者血清中miR-378a-5p表达量,应用受试者工作特征曲线(Receiver operating characteristic curve,ROC)分析血清miR-17-5p和AFP表达对早期肝癌的筛查效能,t检验分析其与患者临床病理参数的关系.采用pcDNA3.1构建过表达miR-378a-5p质粒(pcDNA-miR-378a-5p),实现Huh-7细胞miR-378a-5p过表达后,运用CCK-8和Transwell实验观察Huh-7细胞增殖和侵袭能力变化.结果:早期肝癌患者血清中miR-378a-5p表达量高于健康人(2.263±0.964 vs 0.936±0.645,t=9.155,P<0.001).肿瘤较大(>5cm)、肝癌细胞分级较差(Ⅲ级和Ⅳ级)、TNM分期Ⅰb期的早期肝癌患者血清miR-378 a-5 p表达水平升高(P均<0.05).ROC分析结果显示血清miR-378a-5p表达预测早期肝癌的曲线下面积为0.868(95％CI:0.806-0.931,P<0.001),当cut-off值为1.685,其敏感性和特异性为71.9％和91.6％;血清AFP预测早期肝癌的ROC曲线下面积为0.851(95％CI:0.776-0.925,P<0.001),当cut-off值为17.35,其敏感性和特异性为75％和100％;血清miR-378a-5p联合AFP检测对早期肝癌预测的曲线下面积为0.950(95％CI:0.914-0.986,P<0.001),当cut-off值为61.52,其敏感性和特异性为81.3％和100％,Z检验显示两者联合检测筛选早期肝癌的效能优于血清miR-378a-5p(Z=2.233,P=0.026)和AFP(Z=2.354,P=0.019)独立检测.CCK-8和Transwell实验结果表明Huh-7细胞miR-378a-5p过表达后其增殖和侵袭能力增强(P均<0.05).结论:miR-378a-5p在早期肝癌患者血清中显著升高,并促进了肝癌细胞生长和侵袭,与AFP联合检测可有效提高早期肝癌的筛查效果.     

肺结核患者外周血miR-23a-3p的表达及其对患者诊断及预后评估的价值分析

目的:探究miR-23a-3p在肺结核(PTB)患者中的表达及其对PTB患者的诊断和预后的价值。方法:将2020年6月至2021年6月本院传染病科收治的98例PTB患者设为PTB组,同期另选取92例健康志愿者作为健康组。采用qRT-PCR法检测受试者外周血miR-23a-3p、核转录因子SP1(SP1)和干扰素调节因子1(IRF1)的表达;绘制受试者工作特征(ROC)曲线分析miR-23a-3p对PTB的诊断价值和预后价值;采用Pearson相关系数分析PTB患者外周血miR-23a-3p与SP1、IPF1之间的相关性;对PTB患者完成6个月随访,采用Kaplan-Meier法分析miR-23a-3p与PTB患者预后关系;Cox回归分析影响PTB患者预后的危险因素。结果:与健康组相比,PTB组患者miR-23a-3p水平显著降低,SP1和IPF1表达显著升高(P<0.05);ROC曲线显示,外周血miR-23a-3p诊断PTB的曲线下面积(AUC)为0.861(95%CI:0.809～0.913),灵敏度和特异度分别为85.70%和70.70%;Pearson相关系数分析显示,P...     

外周血单核细胞miRNA表达谱在肺结核中的诊断价值

目的分析活动性肺结核患者(TB)外周血CD14+单核细胞mi RNA表达谱,筛选一组用于结核诊断及鉴别诊断的分子标志物。方法选取健康对照(HD)、结核菌潜伏感染者(LTBI)、TB各6例,采集外周抗凝血并分离外周单个核细胞(PBMC),再用免疫磁珠技术分选CD14+单核细胞,提取总RNA,利用mi RNA芯片检测CD14+单核细胞中mi RNA表达谱。筛选差异表达的mi RNA分子,利用Taq Man探针q PCR技术在大样本人群中进行验证(HD、LTBI、TB各25例)。结果基因芯片结果显示mi R-487家族可以将三组人群进行有效区分,依据其在不同人群中表达趋势共分为4个基因簇。从每个基因簇中筛选具有代表性的4个mi RNA分子进行Taq Man q PCR验证,包括mi R-487b-3p、mi R-134-5p、mi R-487a-3p、mi R-539-3p,其表达趋势与芯片结果一致。其中TB人群mi R-487b-3p表达量显著低于HD、LTBI,差异有统计学意义(P<0.01,P<0.01);mi R-487a-3p在LTBI、TB人群中表达水平显著低于HD(P<0.01,P<0.05);TB人群mi R-539-3p表达水平显著高于HD、LTBI(P<0.05,P<0.05)。结论 mi R-487家族与结核菌感染、发病的关系密切,其中mi R-487b-3p联合mi R-539-3p可以作为活动性结核诊断标识,而mi R-487a-3p可以作为结核菌感染诊断标识。     

外周血miR-29a-3p、miR-365a-3p在活动性肺结核和结核潜伏感染者中的表达

目的探讨外周血miR-29a-3p、miR-365a-3p在活动性肺结核和结核潜伏感染者中的差异表达。方法收集深圳市南山区慢性病防治院结核病防治科门诊2012年1～10月诊治的活动性肺结核患者30例,及同期发现的结核潜伏感染者30例。采集全血,提取总RNA,利用定量PCR方法检测外周血miR-29a-3p、miR-365a-3p的表达。结果结核潜伏感染者外周血中miR-29a-3p（1.16±0.65）明显高于活动性肺结核患者的表达（0.71±0.32）,差异有统计学意义（P〈0.05）;外周血miR-365a-3p的表达在结核潜伏感染者（0.43±0.51）与活动性肺结核患者（0.32±0.71）之间差异无统计学意义（P〉0.05）;进一步分析发现,结核潜伏感染者外周血miR-29a-3p表达与结核菌特异性酶联免疫斑点数呈负相关（r=-0.42,P=0.02）。结论 miR-29a-3p在肺结核感染、发病中可能起到重要作用,可能成为诊断结核潜伏感染者的标志物。     

肺结核患者外周血miRNA分子表达及临床意义研究

目的 探讨肺结核患者外周血微小RNAs(miRNA)分子表达水平及临床意义,为临床早期诊断提供参考依据。 方法 选择2012年1月—2014年12月收治的30例肺结核患者、30例潜伏结核感染患者及30例健康体检者作为研究对象,采用反转录-荧光定量PCR检测活动性肺结核患者(活动组)、潜伏结核感染患者(潜伏组)及健康体检者(对照组)血浆miR-29a、miR-21-5p和miR-155-5p的表达水平,对其进行统计学处理及ROC曲线分析。 结果 活动组血浆miR-29a、miR-21-5p和miR-155-5p表达水平分别为2.11±0.43、4.74±1.29、3.17±0.65,均显著高于对照组和潜伏组(P＜0.05);潜伏组血浆miR-155-5p表达水平为0.96±0.28,显著高于对照组(P＜0.05);潜伏组血浆miR-29a、miR-21-5p与对照组比较差异无统计学意义(P＞0.05);miR-29a、miR-21-5p、miR-155-5p诊断活动性肺结核的ROC曲线图下面积分别为0.732、0.846和0.914,敏感度和特异度分别为80.0%和69.2%、73.3%和82.9%、86.7%和90.0%。 结论 在活动性肺结核及潜伏结核感染患者中血浆miR-29a、miR-21-5p和miR-155-5p表达水平均明显升高,可作为诊断活动性肺结核的重要指标,值得临床重视。      

MicroRNA-122-5p与MicroRNA-199a-5p在EMS患者血清的表达及临床意义

目的 探讨microRNA-122-5p（miR-122-5p）与microRNA-199a-5p（miR-199a-5p）在子宫内膜异位症（EMS）患者血清的表达及临床意义。方法 前瞻性设计,随机选取2016年1月—2017年12月华北石油管理局总医院诊治的EMS患者90例（EMS组）及同期不孕症检查的患者70例（对照组）为研究对象。分别采用实时荧光定量聚合酶链反应（qRT-PCR）及酶联免疫吸附试验（ELISA）检测两组人群血清的miR-122-5p和miR-199a-5p的表达及白细胞介素-6（IL-6）的表达,并分析其与临床特征的相关性。构建受试者操作特征（ROC）曲线。结果 EMS组患者的血清及腹腔液中IL-6、miR-122-5p、miR-199a-5p的表达与对照组比较,差异有统计学意义（P?<0.05）,EMS组均增高。miR-122-5p的表达与IL-6水平（r?=0.578,P?<0.05）、miR-199a-5p表达（r?=0.721,P?<0.05）呈正相关。miR-199a-5p的表达与IL-6水平（r?=0.562,P?<0.05）呈正相关。miR-122-5p和miR-199a-5p检测EMS的敏感性分别为94.7%和92.1%,特异性分别为90.5%和88.6%。结论 血清miR-122-5p和miR-199a-5p在EMS患者中的表达增加,miR-122-5p与miR-199a-5p有成为诊断子宫内膜异位症的生物标志物的潜力。     

miR-191及miR-886-5p在肺结核外周血中的表达与临床价值研究

目的研究miR-191、miR-886-5p在肺结核外周血中的表达与临床价值。方法选取2019年1月至2020年8月在武汉市新洲区人民医院确诊为肺结核的患者50例作为结核组,潜伏感染结核杆菌的患者50例作为潜在感染组,选取同期在武汉市新洲区人民医院体检的健康者50例作为对照组。所有入组受试者于清晨空腹采集2 mL静脉血,采用RNA试剂盒提取循环RNA,定量计算miR-191、miR-886-5p的表达水平。利用Person相关性分析肺结核患者miR-191、miR-886-5p表达与年龄、性别、肺部病灶个数、空洞个数的相关性,构建logistic回归分析模型分析肺结核发生的危险因素。结果对照组、潜在感染组、肺结核组患者miR-191水平依次降低,而miR-886-5p水平依次升高,差异有统计学意义(P<0.05)。肺结核患者miR-191、miR-886-5p表达水平与肺部病灶个数、空洞个数呈正相关(P<0.05),与年龄、性别不具相关性(P>0.05)。ROC曲线表明miR-191、miR-886-5p在诊断肺结核都有意义,miR-191、miR-886-5p联合诊...     

外周血Circ_0070934/miR⁃199a⁃5p/MGAT3作为生物标志物在过敏性鼻炎⁃哮喘综合征中的诊断价值

目的：评估外周血circ_0070934/miR-199a-5p/MGAT3在过敏性鼻炎-哮喘综合征(combined allergic rhinitis and asthma syndrome,CARAS)中的诊断价值。方法：收集CARAS患者38例和健康对照43例,采集外周静脉血,采用ELISA法检测血浆中 MGAT3蛋白水平,采用qRT-PCR检测外周血中circ_0070934/miR-199a-5p/MGAT3的表达水平。ROC曲线判断指标的诊断灵敏度与特异度。结果：ELISA结果显示,CARAS患者中MGAT3的浓度较对照组明显下降(P=0.035)。qRT-PCR结果显示,circ_ 0070934(P=0.001)与MGAT3(P ＜ 0.001)的表达较对照组下调,而miR-199a-5p的表达水平上调(P=0.013)。相关性分析结果显示,MGAT3 与嗜酸性粒细胞直接计数、嗜酸性粒细胞百分比呈正相关;circ_0070934 与二者呈负相关。ROC 曲线分析, MGAT3 为最佳参数,取界值为 0.208 时,其灵敏度和特异度分别为 73.7%和 100.0%,AUC 为 0.933(95%CI：0.882~0.984,P ＜ 0.001);circ_0070934、miR-199a-5p和MGAT3 3个指标联合时,对CARAS的诊断价值最高,取界值为0.539时,灵敏度为92.1%, 特异度为93.0%,AUC为0.959(95%CI：0.916~1.000,P ＜ 0.001)。结论：CARAS患者外周血circ_0070934/miR-199a-5p/MGAT3 的表达存在差异,可作为诊断CARAS的生物标志物。进一步研究circ_0070934/miR-199a-5p/MGAT3在CARAS中的具体作用和机制,有助于发现CARAS新的诊治靶点。     

肺癌患者血浆miR-197-3p和miR-361-3p表达的诊断评价

目的:评价血浆miR-197-3p和miR-361-3p用于肺癌诊断的价值。方法:采用实时定量PCR法检测57例肺癌患者和53例良性肺病患者血浆中miR-197-3p和miR-361-3p的表达水平。建立这两个血浆miRs的受试者工作特征(ROC)曲线评价其诊断肺癌的效果,并与血清癌胚抗原和细胞角蛋白19(Cyfra21-1)诊断效果进行比较。结果:miR-197-3p和miR-361-3p在肺癌患者血浆中的表达水平明显高于良性肺病患者(均P<0.001)。两指标诊断肺癌的ROC曲线下面积分别为0.908和0.869(均P<0.001)。血浆miR-197-3p表达与肺癌的病理组织学类型显著相关(P=0.011);而血浆miR-361-3p表达与肺癌的分化程度及临床分期相关(P=0.005和P=0.015)。血浆miR-197-3p和miR-361-3p测定诊断肺癌的敏感性(78.9%和71.9%)和准确性(81.8%和80%)高于血清癌胚抗原(42.6%和60%)和Cyfra21-1(25%和58.9%),两种miR的联合检测可较大程度提高诊断的敏感性(89.5%)和准确性(85.5%),但特异性略有下降。结论:血浆miR-197-3p和miR-361-3p可作为诊断肺癌的肿瘤标志物,诊断效果优于血清癌胚抗原和Cyfra21-1。     

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.