T-bet/GATA-3的比值在哮喘大鼠免疫失衡中的意义

目的:探讨转录因子T-bet/GATA-3比值在支气管哮喘免疫失衡中的意义.方法:SPF级SD大鼠随机分为对照组和哮喘组,每组12只.用逆转录-聚合酶链反应(RT-PCR)测定法和Western blot法分别检测T-bet,GATA-3 mRNA和蛋白在肺组织的表达.结果:大鼠肺组织中对照组和哮喘组T-bet mRNA表达分别为0.71±0.19,0.08±0.12;T-bet蛋白表达分别为0.72±0.22,0.18±0.06,两组比较均有显著性差异(P＜0.01).大鼠肺组织中对照组和哮喘组GATA-3 mRNA表达分别为1.06±0.25,1.56±0.28;GATA-3蛋白分别为1.04±0.44,2.25±0.74,两组比较均有显著性差异(P＜0.01);对照组T-bet/GATA-3 mRNA表达量的比值0.73±0.32,明显高于哮喘组0.06±0.09 (P＜0.01),对照组T-bet/GATA-3 蛋白表达量的比值0.75±0.25,高于哮喘组0.09±0.04 (P＜0.01).结论:转录因子T-bet/GATA-3 mRNA和蛋白表达量比值在哮喘中明显降低,可作为评价哮喘免疫失衡的客观指标之一.     

CC16及转录因子T-bet、GATA-3对支气管哮喘患者气道炎症的调控作用

目的探讨Clara细胞分泌蛋白(CC16)及转录因子T-bet、GATA-3在支气管哮喘患者气道炎症中的价值。方法采取病例对照研究,收集25例哮喘急性发作期患者和33例健康对照组。采外周静脉血分离血浆,提取外周血单个核细胞(PBMC),用ELISA测定血浆中CC16、IFN-γ、IL-4的水平;用RT-PCR法检测PBMC转录因子T-bet mRNA和Gata-3 mRNA表达水平。结果哮喘组CC16及IFN-γ分别为(21.96±7.31)ng/mL和(118.73±22.59)pg/mL,明显低于对照组[(64.88±25.27)ng/mL和(145.53±29.50)pg/mL,P均0.01],哮喘组IL-4高于对照组[(425.22±4.37)pg/mL比(69.72±10.15)pg/mL,P0.01]。哮喘组T-bet mRNA、T-bet/GATA-3表达水平(0.12±0.01,0.25±0.04)显著低于对照组(0.48±0.12,1.89±0.65)(P均0.01),GATA-3 mRNA表达(0.45±0.05)较对照组(0.30±0.08)明显升高(P0.01)。CC16与T-bet mRNA表达水平、T-bet/GATA-3呈正相关(r值分别为0.792和0.761,P均0.01);与GATA-3 mRNA无明显相关性(r=-0.146,P=0.551)。结论哮喘患者CC16水平降低,对气道炎症的保护性削弱,可能与T-bet/GATA-3和IFN-γ/IL-4的失衡有关。     

T-bet和GATA-3在实验性自身免疫性重症肌无力中的表达

目的通过研究表达在T细胞上的T-box家族成员之一(T-bet)和能与[T/A(GATA)A/G]序列结合的锌指结构家族的转录因子之一(GATA-3)这两种转录因子在实验性自身免疫性重症肌无力(EAMG)中的表达,探讨其在EAMG发病机制中的作用。方法密度梯度离心法分离EAMG组和对照组大鼠外周血单个核细胞(PBMCs)后,采用酶联免疫吸附测定法(ELISA)检测二组大鼠血清干扰素-γ(IFN-γ)和白介素-4(IL-4)含量;逆转录-聚合酶链反应(RT-PCR)检测PBMCs中T-bet和GATA-3的表达。结果对照组和EAMG组PBMCs中,T-bet的表达量分别为0.65±0.15和0.86±0.13,两组比较差异具有显著性(P<0.01);GATA-3的表达量分别为0.46±0.12和0.67±0.11,差异也具有显著性(P<0.01);血清中IFN-γ的含量,对照组(108.22±19.01)pg/ml明显低于EAMG组(230.86±41.44)pg/ml(P<0.01);对照组IL-4含量(87.33±3.50)pg/ml明显低于EAMG组(96.21±4.77)pg/ml(P<0.01);T-bet表达与IFN-γ及GATA-3表达与IL-4在对照组和EAMG组分别呈显著正相关(r=0.89,r=0.89,P<0.01;r=0.92,r=0.88,P<0.01)。结论T-bet和GATA-3在EAMG大鼠PBMCs中表达均显著增高,这可能是EAMG大鼠细胞和体液免疫反应增强的重要原因之一。     

心房钠尿肽信号通路在小鼠支气管哮喘发病中的作用及其机制

目的探讨心房钠尿肽(ANP)信号通路在小鼠支气管哮喘(BA)发病中的作用及其机制。方法 40只雌性BALB/C小鼠随机分为正常对照组、BA组、ANP组和ANP+A71915组,每组10只;建立BA小鼠模型和ANP在体干预模型,观察各组小鼠支气管炎症改变情况和支气管黏液分泌情况,采用免疫组织化学技术检测肺组织T-bet和GATA-3蛋白的表达。结果 BA组小鼠支气管黏膜充血水肿及支气管周围炎性细胞浸润较正常对照组显著(P<0.01),ANP组小鼠支气管黏膜充血水肿及支气管周围炎性细胞浸润较BA组更严重(P<0.01),ANP+A71915组小鼠支气管黏膜充血水肿及支气管周围炎性细胞浸润较ANP组明显减轻(P<0.01)。BA组小鼠肺组织中GATA-3蛋白阳性表达显著高于正常对照组(P<0.01),ANP组小鼠肺组织中GATA-3蛋白阳性表达显著高于BA组(P<0.01),ANP+A71915组小鼠肺组织中GATA-3蛋白阳性表达显著低于ANP组(P<0.01)。BA组小鼠肺组织中T-bet蛋白表达显著低于正常对照组(P<0.01),ANP组小鼠肺组织中T-bet蛋白表达明显低于BA组(P<0.01),ANP+A71915组小鼠肺组织中T-bet蛋白表达明显高于ANP组(P<0.01)。结论 ANP信号可能通过调控T-bet和GATA-3蛋白的表达参与BA小鼠免疫功能失衡的发病过程。     

再生障碍性贫血小鼠T-bet表达及骨髓巨噬细胞对其表达的影响

目的 探讨再生障碍性贫血(简称再障)小鼠外周血单个核细胞Th1细胞转录因子T-bet的表达及骨髓巨噬细胞对正常小鼠外周血单个核细胞T-bet的影响. 方法 ①免疫介导(γ射线照射和淋巴细胞输入)的方法 建立再障小鼠模型.②RT-PCR方法 检测再障小鼠外周血单个核细胞上T-bet mRNA的表达.③正常小鼠外周血单个核细胞分别经再障小鼠骨髓基质细胞培养上清和小鼠骨髓型正常巨噬细胞株Ana-1培养上清刺激后,用RT-PCR方法 检测T-bet mRNA的表达. 结果 ①再障小鼠外周血单个核细胞T-bet mRNA的表达(1.49±0.18)较正常对照组(1.03±0.06)增高(P<0.05);②正常小鼠外周血单个核细胞分别经再障小鼠骨髓基质细胞培养上清和Ana-1细胞株培养上清刺激后,T-bet mRNA的表达分别为1.29±0.03和1.54±0.03,均较正常对照组(1.03±0.06)增高(均P<0.05). 结论 结果 提示巨噬细胞可能通过增加T-bet的表达参与再生障碍性贫血的免疫发病机制.     

转录因子T-bet和GATA-3对再生障碍性贫血免疫失衡的作用

目的探讨外周血中T-bet和GATA-3基因的表达在再生障碍性贫血(aplastic anemia,AA)中发病机制及意义。方法选择23例AA患者为再障组,其中重型再障(severe aplastic anemia,SAA)13例,轻型再障(mediate aplastic anemia,mAA)10例,再选择22例健康体检为对照组,对纳入对象采用流式细胞术检测其外周血Th1和Th2,同时运用RT-PCR技术检测外周血单个核细胞(PBMCs)中转录因子T-bet和GATA-3 mRNA基因表达。结果与对照组相比,再障组的lg(T-bet/β-actin)和Th1(%)升高,差异有统计学意义(P<0.05、P<0.01),lg(GATA-3/β-actin)和Th2(%)降低,差异有统计学意义(P<0.05、P<0.05);其中SAA组的lg(T-bet/β-actin)、lg(GATA-3/β-actin)和Th1(%)、mAA组的lg(T-bet/β-actin)、Th1(%)相比对照组明显升高(P<0.05、P<0.01、P<0.01、P<0.05、P<0.05);SAA组的Th2(%)、mAA组的lg(...     

补肾固表方对复感儿外周血Th1和Th2型细胞因子表达失衡的调节作用

目的探讨补肾固表方对复感儿外周血T辅助细胞1(Th1)和T辅助细胞2(Th2)型细胞因子表达失衡的调节作用。方法采集20例复感儿治疗前后外周血,采用流式细胞仪分选CD4 T细胞,提取细胞总RNA,应用实时荧光定量PCR术,检测T-bet、GATA-3、干扰素(IFN-γ)、白细胞介素4(IL-4)基因表达量,并与10例健康对照组进行比较。结果复感儿T-bet mRNA和IFN-γmR-NA表达下降,GATA-3 mRNA和IL-4 mRNA表达升高,与正常组相比,有显著性差异(P<0.01或P<0.05)。补肾固表方治疗后T-bet mRNA上调(P>0.05),IFN-γmRNA上调(P<0.01),GATA-3mRNA和IL-4 mRNA下调(P<0.01),与正常组相比,无显著性差异(P>0.05),其中尤以GATA-3mRNA和IL-4mRNA改变程度明显。结论复感儿间歇期存在Th转录因子及细胞因子基因表达失衡,呈Th2优势应答模式。补肾固表方可使T-bet mRNA和IFN-γmRNA表达量增加,GATA-3mRNA和IL-4 mRNA表达量下降,从转录因子及细胞因子基因水平恢复Th平衡。     

变应性鼻炎和变应性哮喘大鼠淋巴细胞T-bet和GATA-3 mRNA的表达

目的:探讨T-bet和GATA-3的失衡表达在变应性鼻炎和变应性哮喘中的作用.方法:将30只大鼠随机分成变应性鼻炎组、变应性哮喘组及正常对照组(n=10),相应建立模型.采用逆转录-聚合酶链反应(RT-PCR)方法检测3组大鼠淋巴细胞T-bet和GATA-3 mRNA的表达.结果:变应性鼻炎组和变应性哮喘组大鼠T-bet mRNA的相对表达量分别为(0.12±0.07)及(0.09±0.02),较正常组的(0.60±0.09)减少(P均<0.05);GATA-3 mRNA的相对表达量分别为(1.38±0.15)及(1.41±0.21),较正常组的(0.92±0.21)增多(P均<0.05);而变应性鼻炎组和变应性哮喘组间2个指标比较,差异均无统计学意义(P均>0.05).结论:T-bet和GATA-3的失衡表达可能是上下呼吸道变应性炎症发生的一个共同因素.纠正其平衡很可能为治疗变应性鼻炎和变应性哮喘提供一条新思路.     

再生障碍性贫血患者外周血单个核细胞T-bet表达及其意义

目的:探讨外周血单个核细胞T-bet表达与再生障碍性贫血(aplastic anemia,AA)发病之间的关系。方法:半定量RT-PCR法检测17例初诊AA患者和20名健康者外周血单个核细胞(PBMC)T-bet的表达,ELISA法检测血浆干扰素-γ(IFN-γ)水平。结果:初诊AA患者PBMC中T-bet表达和血浆IFN-γ水平均显著高于正常对照组(P<0.01),两者呈正相关关系(P<0.05)。结论:T-bet和IFN-γ表达的增高在AA的免疫病理学中可能起着重要作用。     

转录因子T-bet/GATA-3对再生障碍性贫血免疫失衡的作用分析

目的 探讨外周血中 T-bet和GATA-3基因的表达在再生障碍性贫血（AA）的发病机制的意义。方法 采用流式细胞术检测23例AA患者和22例健康体检者外周血Th1和Th2,同时运用RT-PCR技术检测外周血单个核细胞（PBMCs）中转录因子T-bet和GATA-3 mRNA基因表达。结果 与对照组相比,再障组的lg(T-bet/ -actin)和Th1(%)显著升高（P<0.05,P<0.01）,lg(GATA-3/ -actin)和Th2(%)显著降低（P<0.05,P<0.05）;SAA组的lg(T-bet/ -actin)、lg(GATA-3/ -actin)和Th1(%)、mAA组的lg(T-bet/ -actin)、Th1(%)明显升高（P<0.05,P<0.01,P<0.01,P<0.05,P<0.05）;SAA组的Th2(%)、mAA组的lg(GATA-3/ -actin)和Th2(%)显著降低（P<0.05,P<0.01,P<0.05）。结论 T-bet和GATA-3表达异常在AA发生、发展过程中发挥重要作用,可能机制为增强Th1细胞功能,抑制Th2细胞功能,导致患者免疫功能异常,最终引起再障发生。     

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.