恒河猴促滤泡激素生物测定法的建立和应用

目的建立恒河猴促滤泡激素（FsH）生物测定法。方法利用FsH体外生物测定法，测定了恒河猴血清中FSH含量。结果测定方法的灵敏度为0．02ng／管．批内和批间误差分别为（2．53±1．25）％和（4．02±2．17）％，证明该方法准确性高；恒河猴血清中FsH含量反应曲线和hFSH标准曲线平行良好。说明该方法可以用来检测恒河猴血清中的具有生物活性的FsH变化．反映了动物正常的生理状态；回收实验表明．在该测定方法中加入5ng、10ng、20ng hFSH时的回收率分别为（101．28±5．66）％、（99．78±4．51）％、（100．61±5．42）％，说明测定结果的可靠性。结论本实验所建立的FSH体外生物测定法灵敏度高．稳定性强。     

恒河猴血清孕酮含量测定方法

目的 建立恒河猴血清中孕酮含量测定方法.方法 本文采用放射免疫测定技术.结果 孕酮的回收率为94%,批内CV为5.1%~8.3%,批间CV为4.5%~7.7%,灵敏度为5~10pg.说明该方法具有较高的灵敏度、特异性、准确性.分别测定了幼年组、成年组和老年组的雌性恒河猴的血清中的孕酮含量分别为:(0.20±0.04)ng/mL、 (6.26±0.17)ng/mL和(0.35±0.06)ng/mL;成年雌性恒河猴月经周期孕酮的变化范围为:滤泡期为(1.10±0.12)ng/mL,排卵期(2.36±0.18)ng/mL,黄体期(6.17±0.15)ng/mL,妊娠期随着妊娠月份的增加,孕酮浓度也增加,最高可达50ng/mL.结论经实验验证,该方法灵敏、可靠、适用,可作为恒河猴血清中孕酮含量测定的一种方法.     

血清人生长激素的放射受体测定法

用晚孕兔肝受体建立血清人生长激素(hGH)的放射受体测定法(RRA),本法灵敏度为90±11 pg/管,特异性高,仅与人泌乳素有2.4％的交叉反应,准确性好,肢端肥大症病人血清的稀释曲线与标准曲线完全平行,重复性较好,批内和批间变异分别为11.3～13.3％和7.7～18.8％。64例正常成人空腹血清RRA hGH水平平均为1.2±0.3 ng/ml(M±SE),其中57例hGH水平<1ng/ml. 23份活动性肢端肥大症病人血清hGH平均为98.7±33.7 ng/ml,明显高于正常人.证实RRA hGH能较好地反映hGH分泌功能.     

化学发光免疫分析法检测黄体生成素和癌胚抗原的性能评价

目的评价化学发光免疫分析法检测黄体生成素和癌胚抗原的性能。方法通过对不同浓度样品黄体生成素(LH)、癌胚抗原(CEA)含量的测定,进行精密度、灵敏度、干扰、回收试验。结果批内CV均小于5%,批间CV均小于6.5%;LH、CEA回收率分别为97.9%～102.2%、98.9%～102.4%,灵敏度分别达到2.4IU/L、2.6ng/ml;无吸样间的交叉污染。结论该方法各项指标结果准确,精密度好、灵敏度高、干扰小,具有广泛的应用前景。     

时间分辨免疫荧光分析检测乙型肝炎病毒表面抗原

目的 时间分辨荧光免疫分析技术(TRFIA)是当前标记免疫分析研究应用领域的热点之一,具有高灵敏性和高特异性,用于生物分子的超微量检测.本研究者在建立一种灵敏度高、特异性强、操作简便的检测方法.方法 以Eu-DTTA{N1-(P-异硫氰基苄基)-二乙三胺四乙酸铕钠}为示踪物,建立了用TRFIA检测乙型肝炎血清学标志物乙型肝炎病毒表面抗原的方法.结果 所建立的标准曲线分析范围分别为0.2～300 ng/ml,分析灵敏度为0.05 ng/ml,检测参考标准品的批内变异系数均小于10%,与免疫放射测定同时定量检测多份血清样本,相关系数高达95%.结论 TRFIA分析范围宽,灵敏度高,操作简便,具有优越的定量检测能力,价格适中,十分适合临床推广应用.     

抗苗勒管激素对控制性促排卵卵巢低反应的预测价值

目的 评估抗苗勒管激素(AMH)对控制性促排卵卵巢低反应的预测价值.方法 测定54例首次行体外授精(IVF)或卵胞质内单精子显微注射(ICSI)患者的基础卵泡刺激素(bFSH)、基础黄体生成素(bLH)、基础雌二醇(bE2)、双侧卵巢窦卵泡计数(AFC)和血清AMH.通过受试者工作特征(ROC)曲线分析各指标对卵巢低反应的预测价值.结果 11例(20.4%)卵巢反应低下者(获卵数≤5)血清AMH水平低于卵巢正常反应者[(1.46±0.46)ng/mL vs(2.36±1.12)ng/mL],差异有统计学意义(P<0.05).ROC曲线分析显示,AMH和AFC曲线下面积(AUC)分别为0.774和0.728(P<0.01,P<0.05);各项基础性激素AUC均<0.5(P>0.05).当AMH截断值≤1.64 ng/mL时,灵敏度为81.8%,特异度为72.1%;当AFC截断值<6时,灵敏度为63.6%,特异度为76.7%.结论 在控制性促排卵中,血清AMH可作为卵巢对外源性促性腺激素反应不良的预测指标.     

高氟饮水对人群激素水平的影响

目的:探讨长期饮用高氟水对人群生殖内分泌的影响.方法:测定高氟区和对照区的水氟、居民即刻尿氟含量,随机选择2地成年居民各40名,应用放免分析法测定其血清中促黄体生成素(LH)、睾酮(T)、雌二醇(E2)和降钙素(CT)4种激素的含量.结果:高氟区水氟((3.86±1.19)mg/L)及人群尿氟水平((4.23±2.38)mg/L)均高于对照区((0.79±0.41)mg/L,(1.61±1.44)mg/L),差异均有统计学意义(P＜0.05).高氟区人群男性血清LH和T水平与对照区人群比较差异无统计学意义(P＞0.05).高氟区人群女性血清LH水平(中位数13.72IU/L,极差51.51 IU/L)高于对照区(中位数8.38 IU/L,极差21.59 IU/L)(P＜0.05).两地女性人群血清E2水平差异无统计学意义(P＞0.05).高氟区成年居民血清CT水平((63.5±33.1)ng/L)与对照区成年居民((74.1±26.5)ng/L)相比差异无统计学意义(P＞0.05).结论:高氟饮水影响女性人群血清LH水平.     

用BA-ELISA法测定载脂蛋白A-I

介绍一种高灵敏度的裁脂蛋白A-I(Apo A-I)的测定方法——生物素-亲和素酶联免疫吸附测定法(BA-ELISA)。本法的工作范围为0.25～4ng Apo A-I,灵敏度约0.1ngAp0 A-I,较已报道的放射免疫法(RIA)和ELISA高3～5倍以上。热处理或加入变性剂均不影响人血清Apo A-I的免疫测定结果。组内和组间变异系数分别为4.55和8.04。经本法测定77名正常成年人血清Apo A-I为1.34±0.23g/L((?)±SD),而且正常成年人血清ApoA-I浓度与高密度脂蛋白-胆固醇(HDL-C)的浓度呈高度相关(r=0.83,p<0.001)。     

定量检测ProMBP双抗体夹心ELISA方法的建立

目的:建立定量检测ProMBP的双抗体夹心ELISA方法.方法:采用Protein A亲和层析法纯化自制的抗ProMBP单克隆抗体(mAb),并行SDS-PAGE和Western blot对纯化抗体特性进行鉴定;利用简易过碘酸钠法对抗ProMBP mAb进行标记辣根过氧化物(HRP)后行抗体配对实验;通过方阵滴定法确定包被抗体和酶标抗体的最适工作浓度;以纯化的妊娠相关血浆蛋白A(PAPP-A)/ProMBP抗原为标准品建立标准曲线;以重复性、灵敏性和回收性实验评价ELISA方法,初步对人血清中的ProMBP水平进行检测.结果:最佳配对组合为抗ProMBP mAb 4C6E5B9和HRP标记的抗ProMBP mAb 9G4A6G10,最适工作浓度分别为2.5 μg/ml和1:3 000,该方法的批内、批间变异系数分别为4.6%～6.2%和4.6%～10.5%,灵敏度达2.0 ng/ml,回收率为92%～113%.正常非妊娠血清、9～11周妊娠血清、15～17周妊娠血清ProMBP水平分别为(26.37±2.90)ng/ml、(357.71±33.60)ng/ml和(1088.77±58.13)ng/ml.结论:建立了一种可用于检测ProMBP的双抗体夹心ELISA方法.     

神经元特异性烯醇化酶在新生儿高胆红素血症中的意义

目的 研究新生儿高胆红素血症与血清神经元特异性烯醇化酶(NSE)之间的关系.方法 分别于第一天和第七天,用ELISA法测定97例高胆红素血症患儿血清NSE含量及同时测定血清胆红素的含量.分轻、重两组和对照组进行比较分析.结果 新生儿高胆红素血症轻型组、重型组患儿与对照组血清NSE水平分别为(25.9±8.8)、(53.2±13.1)、(10.1±3.6)ng/ml,组间比较差异有统计学意义(P＜0.001).7 d复查随胆红素下降,NSE亦下降,轻型组、重型组水平分别为(10.73±2.65)、(11.76±2.86)ng/ml,两组间比较差异无统计学意义(P＞0.05).随访发现轻型组无中枢协调障碍发生,重型组有2例发生(4.76%).结论 测定血清NSE对预测高胆红素血症惠儿的脑损伤有一定的意义.     

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.