去甲肾上腺素对B细胞功能的作用机制研究

目的：观察不同浓度去甲肾上腺素（ＮＡ,１０＾－１０－１０＾－６ｍｏｌ／Ｌ）对大鼠Ｂ细胞功能的影响。α和β肾上腺素能受体及钙离子通道在ＮＡ影响Ｂ细胞功能中的作用,从细胞水平了解ＮＡ对Ｂ细胞功能的调节作用及其作用机制。方法：利用体外抗体生成的检测方法,即用绵羊红细胞（ＳＲＢＣ）刺激大鼠肠系膜淋巴结Ｂ细胞转化成抗体形成细胞（ＡＦＣ）,然后检测其抗体生成量。结果：（１）１０＾－１０,１０＾－９,１０＾－８     

去甲肾上腺素对大鼠T淋巴细胞增殖的影响

本文研究各种浓度（１０－８ｍｏｌ／Ｌ～１０－５ｍｏｌ／Ｌ）去甲肾上腺素（ＮＥ）对Ｔ淋巴细胞增殖的影响，并初步探讨ＮＥ影响Ｔ细胞功能的作用时间。实验结果说明：１０－８～１０－５ｍｏｌ／Ｌ范围内各种浓度的ＮＥ均可抑制Ｔ细胞对刀豆素Ａ（ＣｏｎＡ）的增殖反应；淋巴细胞先与ＮＥ作用１ｈ后再接受ＣｏｎＡ刺激，其增殖反应同样可被ＮＥ所抑制，但淋巴细胞接受ＣｏｎＡ刺激６ｈ后再与ＮＥ作用，其增殖反应就不再被ＮＥ所抑制，本实验结果提示，ＮＥ在较广的浓度范围内均可抑制细胞免疫功能；ＮＥ的这种免疫抑制作用可能发生于Ｔ细胞激活前或激活后初期。     

去甲肾上腺素促进兔肺动脉平滑肌细胞增殖的受体亚型研究

目的：观察肾上腺素能受体亚型β１、α１、α２在去甲肾上腺素（ＮＥ）促进肺动脉平滑肌细胞（ＰＡＳＭＣ）增殖中的作用，并观察钙通道阻滞剂的影响。方法：离体培养新西兰兔ＰＡＳＭＣ，采用四唑盐比色法（ＭＴＴ）和＾３Ｈ－ＴｄＲ参入实验观察ＰＡＳＭＣ增殖和ＤＮＡ合成量的变化。结果：ＮＥ（１×１０＾－５￣１×１０＾－４ｍｏｌ／Ｌ）对ＰＡＳＭＣ的增殖和ＤＮＡ的合成有显著的促进作用。β１受体阻断剂Ｐｒｏｐｒａｎｏｌ     

几种受体激动剂对IFN—γ诱导人单核细胞HLA—DR抗原表达的影响

用细胞体外培养的方法，探讨了几种受体激动剂对人体外周血单核细胞ＨＬＡ－ＤＲ抗原表达的影响。结果显示：１．去甲肾上腺素对ＩＦＮ－γ诱导ＨＬＡ－ＤＲ抗原表达具有双向调节作用。１０＾１２，１０＾－１０ｍｏｌ／Ｌ ＮＡ具有促进作用；＾１０－６，１０＾－４ｍｏｌ／ＬＡ呈现抑制作用。     

几种受体激动剂对IFN-γ诱导人单核细胞HLA-DR抗原表达的影响

用细胞体外培养的方法，探讨了几种受体激动剂对人外周血单核细胞ＨＬＡＤＲ抗原表达的影响。结果显示：①去甲肾上腺素（ｎｏｒａｄｒｅｎａｌｉｎｅ，ＮＡ）对ＩＦＮγ诱导ＨＬＡＤＲ抗原表达具有双向调节作用。１０－１２，１０－１０ｍｏｌ／ＬＮＡ具有促进作用；１０－６，１０－４ｍｏｌ／ＬＮＡ呈现抑制作用。相应α受体阻断剂１０－５ｍｏｌ／Ｌ酚妥拉明（ｐｈｅｎｔｏｌａｍｉｎｅ）可以完全阻断其促进作用，而对抑制作用的阻断则不明显。②１０－１０～１０－４ｍｏｌ／Ｌ异丙肾上腺素（ｉｓｏｐｒｏｔｅｒｅｎｏｌ，ＩＳＯ）对ＩＦＮγ诱导ＨＬＡＤＲ抗原表达具有抑制作用，抑制程度随ＩＳＯ浓度的增加而加强，且这种作用可被１０－５ｍｏｌ／Ｌ普洛萘尔（ｐｒｏｐｒａｎｏｌｏｌ）完全或部分阻断。③毛果芸香碱（ｐｉｌｏｃａｒｐｉｎｅ）１０－１１～１０－３ｍｏｌ／Ｌ对ＩＦＮγ诱导ＨＬＡＤＲ抗原表达无明显影响。结果提示：神经递质对免疫细胞具有调节作用     

低密度脂蛋白对肾小珠系膜细胞,TGF—β和FN mRNA表达的影响

目的：观察低密度脂蛋白（ＬＤＬ）对体外培养的大鼠肾小球系膜细胞（ＭＳＣ）生长及转化生长因子β（ＴＧＦ－β）和纤维连接蛋白（ＦＮ）基因表达的影响。方法：体外培养的ＭＳＣ培养液中加入ＬＤＬ共同孵育,采用＾３Ｈ－ＴｄＲ渗入法检测ＭＳＣ增殖情况,应用Ｎｏｒｔｈｅｒｎ ｂｌｏｔ检测ＴＧＦ－β ｍＲＮＡ、ＦＮ ｍＲＮＡ的表达,应用斑点杂交法检测抗ＴＧＦ－抗体对ＦＮ ｍＲＮＡ表达的影响。结果（１）ＬＤＬ刺激ＭＳ     

三种阿片肽对体外培养大鼠胰岛胰岛素释放的影响

目的：观察不同浓度的３种阿片肽对体外孵育胰岛分泌胰岛素的影响。方法：大鼠胰岛培养中分别加入１０＾－１５，１０＾－１２，１０＾－９，１０＾－６ｍｏｌ／Ｌ４种浓度的β内啡肽（β－ＥＰ）、亮啡肽（Ｌ－ＥＫ）和强啡肽Ａ１－１３（ＤｙｎＡ１－１３）。结果：３种阿片肽都能刺激胰岛素分泌。高浓度（１０＾－６ｍｏｌ／Ｌ）β－ＥＰ和ＤｙｎＡ１－１３相对于低浓度（１０＾－１５ｍｏｌ／Ｌ）胰岛素分泌反而减少，但仍高于正     

肾上腺髓质素抑制内皮素1,血管紧张素Ⅱ刺激的肺动脉平滑？…

目的：研究肾上腺髓素（ＡＭ）对内皮素１（ＥＴ－１）、血管紧张素Ⅱ（ＡｎｇⅡ）促肺动脉平滑肌细胞增殖的影响。方法：体外增减兔肺动脉平滑肌细胞,采用＾３Ｈ－ＴｄＲ掺入法观察不同剂量ＡＭ对ＥＴ－１,ＡｎｇⅡ促肺动脉平滑肌细胞蛋白质合成的影响。结果：１×１０＾－９ｍｏｌ／Ｌ的ＥＴ－１,１×１０＾－８ｍｏｌ／Ｌ的ＡｎｇⅡ明显增加培养的平滑肌细胞＾３Ｈ－ＴｄＲ掺入量。１×１０＾－７￣２×１０＾－８ｍｏｌ／Ｌ深     

苯那普利对心力衰竭的疗效及其神经—体液机理

目的：探讨苯那普利对心衰的疗效及其神经－体液机理。方法；对３２例心衰病人（心功能Ⅱ级１９、Ⅲ级１０、Ⅳ级３），停用β受体阻滞剂和钙抗抗剂，在继续使用标准抗心衰治疗基础给予ＢＮ１０ｍｇ口服，１／ｄ，共２０－３０ｄ。给药前、１后测定血浆肾素活性（ＰＲＡ）、血管紧张素Ⅱ（ＡＴ－Ⅱ）、去甲肾上腺素（ＮＥ）、肾上腺素（Ｅ）、内皮素（ＥＴ）和心钠肽（ＡＮＰ）、以及ＵＣＧ左室功能和心机械图检查。结果：全组的心衰     

乙酰胆碱及其受体在调节T细胞增殖中的作用

本文研究不同浓度乙酰胆碱（ＡＣｈ）对Ｔ淋巴细胞增殖的影响，并初步探讨Ｍ型胆碱能受体在ＡＣｈ调节Ｔ细胞增殖中的作用，结果表明：１０－１０ｍｏｌ／Ｌ浓度ＡＣｈ对Ｔ细胞增殖无明显影响，而１０－９～１０－４／ｍｏｌ／Ｌ浓度ＡＣｈ均可显著增强Ｔ细胞对刀豆素Ａ的增殖反应；其中以１０－７ｍｏｌ／Ｌ和１０－６ｍｏｌ／Ｌ两个ＡＣｈ浓度的作用最强。１０－６ｍｏｌ／Ｌ的阿托品可阻断１０－７ｍｏｌ／Ｌ的ＡＣｈ对Ｔ细胞增殖的影响。结果提示：ＡＣｈ在较大的浓度范围内均可促进细胞免疫功能，ＡＣｈ增强细胞免疫的作用可能是通过Ｍ型胆碱能受体实现的。     

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.