体外循环中胃粘膜TNF-α mRNA的表达及细胞定位

目的 探讨体外循环（ＣＰＢ）过程中肿瘤坏死因子－α（ＴＮＦ－α）在家兔胃粘膜中及细胞膜中的表达及细胞定位。方法 采用家兔ＣＰＢ模型,运用反转录ＰＣＲ及ＥＬＩＳＡ的方法,结合血浆中ＴＮＦ－α,内毒素浓度的变化,探讨了ＴＮＦ－αｍＲＮＡ的及细胞定位的规律。结果 （１）ＣＰＢ过程中ＴＮＦ－αｍＲＮＡ在胃肠道的相对表达量较对照组明显增高,（２）ＣＰＢ过程中胃肠道组织中的ＴＮＦ－α呈不同程度的增高,而且胃肠     

肾小球内皮细胞IL-8mRNA表达的实验研究

探讨白细胞介素１（ＩＬ－１β）及肿瘤坏死因子（ＴＮＦα）对肾小球内皮细胞产生ＩＬ－８的影响。方法采用逆转录－聚合酶链反应（ＲＴ－ＰＣＲ）方法，分别加入重组ＩＬ－１β及ＴＮＦα，观察培养人肾小球内皮细胞ＩＬ－８ｍＲＮＡ表达的影响。结果在不加任何刺激条件下，肾小球内皮细胞ＩＬ－８ｍＲＮＡ有弱的表达，当分别加入ＩＬ－１β（２５ｎｇ／ｍｌ）和ＴＮＦα（１０ｎｇ／ｍｌ）刺激２４小时后／ＩＬ－８ｍＲＮＡ的表达均明显增强。结论肾小球内皮损伤可以导致ＩＬ－８表达增强，从而引发肾小球局部的炎症效应。     

山莨菪碱对LPS诱导的急性肺损伤大鼠肺组织TNFα,IL—8表？…

目的 探讨山莨菪碱（６５４－２）对内毒素致伤急性损伤（ＡＬＩ）大鼠的防治作用和可能机制。方法 观察６５４－２对ＡＬＩ大鼠血气分析和肺组织损伤的影响。并采用原位杂交法检测肺组织ＴＮＦα、ＩＬ－８ｍＲＮＡ表达和ＥＬＩＳＡ检测肺组织匀浆ＴＮＦα、ＩＬ－８含量的改变。结果 ６５４－２干预后可减轻ＡＬＩ大鼠肺组织损伤程度，减少肺组织ＴＮＦα、ＩＬ－８ｍＲＮＡ表达及其肺组织匀浆含量。结论 ６５４－２可能通过抑     

多发性硬化患者外周血单个核细胞IL—2,IFN—γ和TNF—αmRN…

应用逆转录／聚合酶链反应（ＲＴ／ＰＣＲ）和狭缝印迹分子交发技术，研究１７例多发性硬化（ＭＳ）患者外周血单个核细胞ＩＬ－２，ＩＦＮ－γ和ＴＮＦ－α的ｍＲＮＡ表达。结果发现存３种细胞因子的ｍＲＮＡ表达的高于健康对照组，治疗后病程处于稳定期的ＭＳ患者ＩＦＮ－γ和ＴＮＦ－α的ｍＲＮＡ表达恢复正常水平，但ＩＬ－２ｍＲＮＡ仍保持高水平，此结果表明炎性细胞因子（ＩＦＮ－γ和ＴＮＦ－α）参与ＭＳ发病过程，并可作为     

肾小球内皮细胞IL—8mRNA表达伯实验研究

目的 探讨白细胞介素１（ＩＬ－１β）及肿瘤坏死因子（ＴＮＦα）对肾小球细胞产生ＩＬ－８的影响。方法 采用逆转录－聚合酶链反应（ＲＴ－ＰＣＲ）方法，分别加入重组ＩＬ－１β及ＴＮＦα，观察培养人肾小球内皮细胞ＩＬ－８ｍＲＮＡ表达的影响。结果 在不加任何刺激条件下，肾小球内皮细胞ＩＬ－８ｍＲＮＡ有弱的表达，当分别加入ＩＬ－１β（２５ｎｇ／ｍｌ）刺激２４小时后／ＩＬ－８ｍＲＮＡ的表达均明显增强。结论 肾小     

急性胰腺炎患者血清肿瘤坏死因子α、白细胞介素8水平变化及其意义

目的 观察急性胰腺炎患者血清肿瘤坏死因子α（ＴＮＦ－α）、白细胞介素８（ＩＬ－８）水平变化并探讨其意义。方法 应用ＥＬＩＳＡ方法检测２３例急性胰腺炎及２０例对照组血清ＴＮＦ－α、ＩＬ－８水平。结果 急性胰腺炎患者血清ＴＮＦ－α、ＩＬ－８水平明显高于对照组（均Ｐ〈０．０１）,在重型胰腺炎中尤为明显（Ｐ〈０．０１）。结论 细胞因子ＴＮＦ－α、ＩＬ－８参与了急性胰腺炎病程,是发病机制中的重要因素。     

血清和脑脊液中肿瘤坏死因子α水平与急性白血病相关性研究

目的：观察急性白血病（ＡＬ）与中枢神经系统白血病（ＣＮＳ－Ｌ）患者血清与脑脊液（ＣＳＦ）中肿瘤坏死因子α（ＴＮＦα）水平变化，并探讨其临床意义。方法：用酶联免疫检测盒，采用双抗体夹心方法（ＥＬＩＳＡ），同时检测３６例ＡＬ患者与１３例正常对照组血清与ＣＳＦ中ＴＮＦα水平。结果：各型急性白血病患者血清与ＣＳＦ中ＴＮＦα均明显升高，并发ＣＮＳ－Ｌ后ＣＳＦ中ＴＮＦα进一步升高；急性淋巴细胞白血病（ＡＬＬ）     

再生障碍性贫血外周血单核细胞中肿瘤坏死因子基因表达的研究

本文报道了用Ｎｏｒｔｈｅｍｂｌｏｔ方法检测再障患者、正常人ＰＢＭＣ和经删Ｒａｄ６０Ｃｏ－ｙ全身照射、正常对照小鼠脾细胞的ＴＮＦｍＲＮＡ的表达。结果显示：７例再障患者中有３例测不到ＴＮＦｍＲＮＡ，２例含量极低（共占７０．４％）；而正常对照８例中除１例外其余均较高（占１２．５％）。在小鼠中照射组１０例除１例外其余均明显降低（占９０％）；对照组仅１例降低（占１０％）．结果提示再障时ＰＢＭＣ中的ＴＮＦｍＲＮＡ表达是降低的（Ｐ＜０．０１）。     

细胞因子对人肾小球系膜细胞表达细胞粘附分子的调控

研究白细胞介素－１β（ＩＬ－１β）及肿瘤坏死因子α（ＴＮＦα），对体外培养的人肾小球系膜细胞表达细胞间粘附分子－１（ＩＣＡＭ－１）和血管细胞粘附分子－１（ＶＣＡＭ－１）的调节作用。方法用ｒｈＩＬ－１β（２５ｎｇ／ｍｌ）或ｒｈＴＮＦα（１００ｎｇ／ｍｌ）与系膜细胞共同孵育４、８、１６及３２小时，然后用Ｎｏｒｔｈｅｒｎ杂交检测该细胞ＩＣＡＭ－１和ＶＣＡＭ－１的ｍＲＮＡ表达，并用细胞ＥＬＩＳＡ检测它们的蛋白质表达。结果未予任何刺激的对照组，系膜细胞仅低水平表达ＩＣＡＭ－１、ＶＣＡＭ－１ｍＲＮＡ和蛋白质。ｒｈＩＬ－１β或ｒｈＴＮＦα刺激后，系膜细胞上这两种细胞粘附分子ｍＲＮＡ的表达，均迅速上调（仅ＴＮＦα刺激ＩＣＡＭ－１ｍＲＮＡ表达高峰在８小时，其余均在４小时），蛋白质表达也显著增加（Ｐ＜０．００１））。结论细胞因子ＩＬ－１β及ＴＮＦα可能通过刺激肾小球系膜细胞表达ＩＣＡＭ－１和ＶＣＡＭ－１而参与肾小球肾炎发病。     

不同激活剂对巨噬细胞肿瘤坏死因子－α产量及其基因表达的作用

研究γ－干扰素（ＩＦＮ－γ），ＴＮＦ－α和脂多糖（ＬＰＳ）或它们的联合应用诱导巨噬细胞产生ＴＮＦ－α及其ｍＲＮＡ表达的作用。ＬＰＳ和ＴＮＦ－α均能诱导巨噬细胞ＴＮＦ－α合成并伴随着ｍＲＮＡ表达。ＩＦＮ－γ虽能诱导ＴＮＦ－αｍＲＮＡ表达，却未能检测到其蛋白质合成．．ＩＦＮ－γ能协同ＴＮＦ－α增加ＴＮＦ－αｍＲＮＡ表达水平，而不能增加其蛋白质合成。ＩＦＮ－γ能协同ＬＰＳ增加ＴＮＦ－γｍＲＮＡ表达水平和蛋白质合成。     

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.