大鼠骨髓间充质干细胞体外培养和鉴定

目的探讨大鼠骨髓间充质干细胞（BMSCs）体外分离培养方法及其生物学特性。方法采用全骨髓贴壁培养法获得大鼠骨髓间充质干细胞,取第3代骨髓间充质干细胞,通过成骨、成脂肪诱导分化以及流式细胞仪分析其表面标记（CD29、CD34、CD45、CD90）等鉴定BMSCs特征。结果全骨髓贴壁培养法获得的BMSCs,原代和传代培养具有活跃的增殖能力;BMSCs经诱导后可分别向成骨、成脂转化;流式分析表面标志分子高表达CD90（96.5%）、CD29（92.3%）,低表达CD34（0.89%）、CD45（1.41%）。结论全骨髓贴壁培养法可有效地分离和扩增BMSCs,分离培养的BMSCs具有潜在的多向分化能力。     

大鼠骨髓间充质干细胞分离培养及鉴定

目的 建立一套简单易行有效的骨髓间充质干细胞(BMSCs)的培养、纯化、鉴定的方案,初步了解BMSCs的基本性状和功能特点.方法 取4周龄雄性SD大鼠,全骨髓贴壁培养BMSCs,对细胞相关的性状进行观察及分析,流式鉴定表面抗原,诱导其成骨、成脂分化,并进行染色鉴定等.结果 流式检测结果CD29、CD90呈阳性反应,CD34、CD45呈阴性反应,成骨诱导分化后茜素红染色呈阳性反应,成脂诱导分化后油红染色呈阳性反应.结论 全骨髓培养法是一种相对简单易行的BMSCs分离纯化的方法,可获得纯度高,活性好,性状均一的BMSCs.     

大鼠骨髓间充质干细胞的体外分离培养与鉴定

目的建立大鼠骨髓间充质干细胞(bone marrow-derived mesenchymal stem cells,BMSCs)体外分离培养方法。方法采用全骨髓贴壁法分离培养BMSCs,进行形态学观察,绘制生长曲线,流式细胞仪分析细胞周期、检测细胞表面抗原标志物,并进行成脂、成骨分化诱导。结果获取的BMSCs形态呈均一成纤维细胞样,并呈集落样生长。生长曲线呈S形,细胞周期显示86.02%P3代细胞为G0/G1期,保持活跃的扩增能力。BMSCs高表达CD44、CD90、低表达CD34、CD45。成脂诱导21 d后,可见细胞的胞浆内出现大量红染脂滴。成骨诱导21 d后,可见大量橘红色矿化结节形成。结论全骨髓贴壁培养法可成功有效地分离培养BMSCs。     

大鼠骨髓间质干细胞多向分化研究

目的:分离和培养大鼠骨髓间质干细胞(BMSCs),并进行多向分化研究。方法:体外分离培养大鼠骨髓单个核细胞,以流式细胞仪检测其表面抗原(CD44、CD90、CD45)的表达。传至第3代后,分别进行成脂肪细胞、成骨细胞、成软骨细胞及成肝细胞的诱导。结果:通过流式细胞仪器检测表明培养的细胞为大鼠BMSCs。BMSCs经诱导后分化为脂肪细胞、骨细胞、软骨细胞及肝细胞。结论:大鼠BMSCs具有多向分化潜能,可作为组织工程的种子细胞。     

改良全骨髓贴壁法分离及培养大鼠骨髓间充质干细胞

目的 建立简单、优化的分离及培养大鼠骨髓间充质干细胞(BMSCs)的方法，为组织工程支架研究提供细胞基础。方法 分别采用常规和改良的全骨髓贴壁法分离和培养BMSCs。常规法按照传统全骨髓贴壁法，对骨髓冲洗液进行过筛和离心处理后加入完全培养基进行培养。在改良全骨髓贴壁法中，将骨髓冲出骨髓腔后直接加入完全培养基进行培养。倒置相差显微镜下观察两组细胞形态，采用细胞计数试剂盒(CCK-8)法比较两组BMSCs的增殖活性，流式细胞术检测表面标志物CD90、CD29、CD11b/c、CD45。对改良法培养的BMSCs进行定向诱导成骨及成脂分化，并通过茜素红染色检测其成骨分化潜能，通过油红O染色检测其成脂分化潜能。结果 改良全骨髓贴壁法培养的BMSCs形态均一，细胞集簇排列呈“鱼群状”“漩涡状”。改良法比常规法培养的BMSCs增殖活性强(P<0.05)。改良法与常规法培养的BMSCs均高表达CD90和CD29,低表达CD11b/c和CD45。改良法培养的BMSCs成骨、成脂诱导分化后茜素红染色和油红O染色均为阳性。结论 改良全骨髓贴壁法可成功分离并培养BMSCs,培养的BMSCs具有多向分化潜...     

大鼠骨髓间充质干细胞的体外分离培养与多向分化鉴定

目的:建立体外分离、培养及纯化大鼠骨髓间充质干细胞(mesenchymal stem cells,MSCs)的方法,并对细胞进行形态学观察、表面标志物鉴定及分化潜能检测,为大鼠MSCs进行细胞移植治疗脑损伤的研究奠定基础。方法:用全骨髓贴壁培养法分离、培养、纯化大鼠MSCs,倒置相差显微镜进行形态学观察,流式细胞仪检测细胞表面标记物,定向诱导向成脂、成骨方向分化。结果:72小时首次全量换液7天后观察可见呈放射状排列的细胞集落,以梭形细胞为主,细胞规则、生长旺盛,可连续传代10代以上;取3代MSCs流式细胞仪检测,CD90呈阳性表达,CD34、CD45均呈阴性表达;细胞传代后加入成脂、成骨诱导剂定向诱导分化,油红O染色及茜素红染色均呈阳性。结论:全骨髓贴壁筛选培养法可大量分离、纯化、扩增大鼠MSCs。经诱导鉴定MSCs具有多项分化潜能。     

大鼠骨髓间充质干细胞体外分离培养及成骨成脂诱导

目的建立大鼠骨髓间充质干细胞（BMSCs）体外分离、纯化、扩增的方法及诱导BMSCs成骨成脂分化,提供理想的组织工程种子细胞。方法采用贴壁筛选法分离BMSCs,通过不断传代进行纯化和扩增培养,并绘制细胞生长曲线。诱导后检测油红O染色和矿化结节。结果 BMSCs在体外分离培养扩增,细胞形态为长梭形,流式检测分析P3和P5细胞表面标记物CD44、CD90为阳性,CD45为阴性。细胞生长曲线呈S形。经成脂诱导培养,脂肪的特异性油红O染色为阳性;经成骨诱导培养,形成了矿化结节。结论本实验分离培养的细胞具有BMSCs的表面标记特征和诱导分化为脂肪细胞和成骨细胞的潜能,为BMSCs在组织工程中的应用提供基础理论和实验依据。     

大鼠骨髓间充质干细胞的分离与培养方法优化

目的：建立一个分离、培养、纯化大鼠的骨髓间充质干细胞的方法。方法使用贴壁法分离大鼠的骨髓间充质干细胞,通过培养初期的频繁换液和传代过程中减少胰蛋白酶的暴露时间,达到骨髓间充质干细胞的纯化。流式细胞仪检测细胞表面标志物,MTT法检测细胞生长状况,暴露于不同的诱导培养基使细胞成骨、成脂,并向肝胆系分化。结果分离所得的细胞阳性表达CD29、CD44、CD90,而对于造血细胞标志物CD45呈阴性。在成骨、成脂培养基的诱导下,细胞ALP、茜素红、油红O染色均呈阳性,并发现传至10代的细胞仍保持分化功能。将骨髓间充质干细胞贯续暴露于不同的细胞因子和激素,得到了表达肝细胞、胆管上皮细胞特异标志的子代细胞。结论通过改良后的方法可以高效、简洁地分离出形态均一的大鼠骨髓间充质干细胞,并能够向多胚层的细胞分化。     

人骨髓基质干细胞体外培养和生物学特性鉴定

目的 体外分离、纯化培养人骨髓基质干细胞(hBMSCs),对其表面标志物、多向分化特性进行鉴定,为骨组织工程提供理想的种子细胞来源.方法 抽取健康成人骨髓,采用全骨髓培养法,多次消化以纯化hBMSCs;应用流式细胞仪对细胞表面标志物进行检测;采用成骨、成软骨和成脂培养基进行三向诱导分化.结果 培养的第3代细胞表面抗原检测显示:表达CD106、CD166和CD29,不表达造血和内皮标志CD34、CD45和CD145在体外分别诱导出其向成骨、成软骨和成脂肪细胞分化.结论 hMSCs体外经分离传代培养后细胞成分较为单一,具有多向分化潜能,符合间充质干细胞的基本功能特征.     

大鼠骨髓间质干细胞的体外分离培养及初步鉴定

目的探讨并建立一种简便有效的体外分离纯化及扩增大鼠骨髓间质干细胞的方法,并研究其生物学特性,对其进行初步鉴定,为进一步诱导分化为胃黏膜上皮细胞奠定基础。方法利用贴壁培养法分离纯化SD大鼠骨髓间质干细胞,体外培养,传代扩增,在倒置显微镜下连续观察细胞的形态变化,并用免疫组化方法鉴定骨髓间质干细胞表面CD29,CD44,CD34的表达。将加入成骨、成脂肪诱导剂的骨髓间质干细胞体外培养2～3周,观察细胞形态变化,并做油红0染色,鉴定成骨及成脂肪分化的结果。结果原代培养8—10d后可分离得到骨髓间质干细胞,且骨髓间质干细胞体外培养生长状况良好,呈均一的成纤维细胞样,传代周期为3～4d。免疫组化显示90％以上的骨髓间质干细胞CD29、CD44阳性,CD34阴性,且可以将其定向诱导为脂肪细胞和成骨细胞。结论利用贴壁培养法可分离培养出大量大鼠骨髓间质干细胞,且此方法简便易行。     

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.