组织块贴壁法培养大鼠主动脉平滑肌细胞及鉴定

目的建立大鼠胸主动脉平滑肌细胞的组织块贴壁法。方法采用组织块贴壁法进行原代培养,胰酶消化法传代,并应用相差显微镜和平滑肌肌动蛋白对细胞进行形态学和免疫组化鉴定。结果90％的组织块接种存活,培养5代的平滑肌细胞纯度达98％以上。镜下可见培养细胞呈典型的“峰-谷”状生长,免疫组化染色显示胞浆内平滑肌肌动蛋白阳性表达。结论组织块贴壁法培养大鼠平滑肌细胞操作简单、结果稳定、纯度较高、存活率高。     

组织贴块法培养大鼠主动脉平滑肌细胞及鉴定

目的探讨以原代培养的方法获得活力稳定、高度纯化的大鼠血管平滑肌细胞的体外模型,并为相关研究提供所需的试验材料。方法采用组织贴块法进行细胞原代培养,胰酶消化传代,液氮冻存,并应用倒置相差显微镜和SP法免疫组化染色对细胞进行鉴定。结果85％的组织块接种存活,传代后90％以上的平滑肌细胞重新贴壁生长,冻存后细胞再行1～2次传代后可恢复增生活力。显微镜下细胞呈典型的“谷峰状”生长,SP法免疫组化染色显示胞质内“平滑肌肌动蛋白表达阳性。结论组织块贴壁法简便易行,短期内可获大量符合后续试验要求的血管平滑肌细胞。     

大鼠血管平滑肌细胞的培养和鉴定

目的:建立一种方便快捷的培养大量大鼠血管平滑肌细胞的方法,为心血管疾病的体外实验研究提供实验材料。方法:采用改良的组织块贴壁法进行原代培养,差异贴壁法纯化细胞,常规胰酶消化法传代,使用倒置相差显微镜进行形态学观察,通过检测平滑肌肌动蛋白对细胞进行免疫组化鉴定。结果:培养4代的平滑肌细胞纯度达96%以上。镜下可见培养细胞呈典型的"峰-谷"样生长,免疫组化染色显示胞质内平滑肌肌动蛋白阳性表达。结论:本研究所介绍的组织贴块培养法较为成熟,可为心血管疾病病因、机制的研究和防治提供一个理想的实验材料。     

组织块法培养兔主动脉平滑肌细胞

目的探讨培养兔主动脉平滑肌细胞的方法，为心血管疾病的病因机制研究提供有用的体外模型。方法采用组织块贴壁、反转干涸方法培养兔主动脉平滑肌细胞并传代。倒置显微镜下进行形态学观察及免疫细胞化学鉴定。结果成功培养兔血管平滑肌细胞并传代。倒置显微镜下细胞呈典型的“峰-谷”状。免疫细胞化学染色呈棕黄色，均呈阳性表达，胞浆内可见纵行排列肌丝。结论利用组织块贴壁、反转干涸方法成功进行兔主动脉平滑肌细胞原代培养，具有简便易行、培养周期短、纯度高等优点，是心血管疾病良好的体外研究模型。     

人脐动脉平滑肌细胞体外培养

目的 建立人脐动脉血管平滑肌细胞的体外培养方法.方法 运用植块贴壁法进行人脐动脉血管平滑肌细胞的体外原代和传代培养.倒置相差显微镜和免疫荧光染色方法对培养细胞进行鉴定.结果 原代和传代培养的细胞生长良好,光镜下细胞呈长梭形"峰-谷"样生长,具有典型的平滑肌细胞特征.经传代培养至第5代,细胞生长特性未见异常改变;经考马斯亮兰R250及α-平滑肌肌动蛋白(α-SMA)免疫荧光染色检测,证实为平滑肌细胞.结论 植块贴壁法可成功进行人脐动脉血管平滑肌细胞的体外培养,传代后细胞生物学特征稳定,为慢性肾病并发心血管疾病的机制研究奠定了实验基础.     

人脐动脉平滑肌细胞体外培养

目的建立人脐动脉血管平滑肌细胞的体外培养方法。方法运用植块贴壁法进行人脐动脉血管平滑肌细胞的体外原代和传代培养。倒置相差显微镜和免疫荧光染色方法对培养细胞进行鉴定。结果原代和传代培养的细胞生长良好,光镜下细胞呈长梭形"峰-谷"样生长,具有典型的平滑肌细胞特征。经传代培养至第5代,细胞生长特性未见异常改变;经考马斯亮兰R250及α-平滑肌肌动蛋白(α-SMA)免疫荧光染色检测,证实为平滑肌细胞。结论植块贴壁法可成功进行人脐动脉血管平滑肌细胞的体外培养,传代后细胞生物学特征稳定,为慢性肾病并发心血管疾病的机制研究奠定了实验基础。     

改良组织块贴壁法培养大鼠主动脉平滑肌细胞及鉴定

目的以简捷、高效的方法获取原代和传代的大鼠血管平滑肌细胞(VSMC),为进一步的科学研究提供实验材料。方法采用改良的组织块贴壁法培养原代大鼠VSMC,2.5 g.L-1胰蛋白酶消化传代,并用相差显微镜、电镜、荧光显微镜及激光共聚焦显微镜对细胞进行鉴定。结果95%的组织块接种成活,相差显微镜下细胞呈典型的"峰-谷"状生长,胞体长梭形;电镜下可见粗、细肌丝沿细胞长轴平行排列;荧光显微镜及激光共聚焦显微镜检测α-肌动蛋白可见细胞胞浆内呈阳性显色,细胞核不显色。结论本方法培养VSMC简便、易操作,获得的细胞纯度和成活率较高。     

动脉平滑肌细胞体外培养模型及生长特点

目的 探讨胎儿动脉导管、主动脉及肺动脉平滑肌细胞体外培养方法,明确不同平滑肌细胞的原代和传代后生长情况。方法 采用改良贴壁法一玻片压迫组织贴壁方法进行胎儿动脉导管、主动脉及肺动脉平滑肌细胞的原代培养,并将细胞进行传代后培养,同时对各细胞的生长进行观察。结果 ①采用改良贴壁法可使原代细胞良好生长,动脉导管的平滑肌细胞无论是从组织块游出时间还是生长呈“峰一谷”样时间和细胞首次传代时间都比肺动脉和主动脉的要长;②在细胞的继代培养期,动脉导管平滑肌的生长周期长于主动脉,主动脉的平滑肌生长周期长于肺动脉。结论 动脉导管、主动脉及肺动脉平滑肌细胞体外生长存在差异。     

改良组织块贴壁法培养小鼠气道平滑肌细胞及鉴定

目的 采用改良组织块贴壁法建立小鼠气道平滑肌细胞体外培养模型。方法 用I型胶原酶消化小鼠气道平滑肌组织块后再贴壁，培养出的小鼠原代气道平滑肌细胞经过细胞免疫荧光技术鉴定。结果 相比单纯组织块贴壁法，改良组织块贴壁法获得的原代平滑肌细胞的纯度更高[（93.0%±1.8%）vs(96.1%±1.8%),P<0.01]，酶消化法获得的平滑肌细胞的纯度（90.8%±1.9%）最低，与改良组织块贴壁法相比，差异具有统计学意义（P<0.01）。结果还显示P5代细胞与P1代细胞相比，平滑肌细胞生长形态较前改变，呈不规则形，且α-SMA阳性表达减弱，Vimentin阳性表达增强，标志着平滑肌细胞的纯度会随传代次数增加而逐渐降低。酶消化法获得的ASMCs的增殖速度较单纯组织块贴壁法和改良组织块贴壁法获得的ASMCs的增殖速度慢（P<0.01）。结论 改良组织块贴壁法经济稳定，可在短期内培养出数量多、纯度高、活性好的小鼠气道平滑肌细胞，此法成功建立了体外培养小鼠气道平滑肌细胞的模型。     

血管平滑肌细胞的培养及鉴定

目的探讨以简便、高效的方法获取血管平滑肌细胞,为相关研究提供实验材料.方法采用改良组织贴块法进行原代培养,胰酶消化传代,综合运用自然纯化、机械刮除、差异贴壁法进行细胞纯化,并应用相差显微镜和SP试剂盒对细胞进行形态学和免疫组化鉴定.结果90%的组织块接种存活,5代的平滑肌细胞纯度达98%以上.镜下培养细胞呈典型的"谷峰状"生长,免疫组化染色显示胞浆内α平滑肌肌动蛋白阳性表达.结论本法简便、可靠,短期内可获大量高纯度、功能良好的血管平滑肌细胞.     

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.