乌司他丁对胃癌细胞c-met基因表达及增殖的影响研究

目的：观察乌司他丁对胃癌细胞c-met基因表达及增殖的影响，为乌司他丁用于胃癌的治疗提供理论依据。方法：取对数生长期人胃癌BGC-823细胞，随机分为空白组、对照组和乌司他丁组。空白组加入RPMI1640培养液3ml，对照组培养液中加入奥沙利铂（L-OHP）至终浓度为1mmol／L（对照1组）和0.5mmol／L（对照2组），乌司他丁组培养液中加入乌司他丁至终浓度为320U/ml（乌司他丁1组）和160U／ml（乌司他丁2组），分别置于培养箱中培养48h。采用RT-PCR检测胃癌细胞c-met mRNA的表达情况；ELISA检测细胞抑制率；活细胞计数计算细胞倍增时间，以评估乌司他丁对胃癌BGC-823细胞增殖的抑制情况。结果：乌司他丁组与空白组及对照组比较，c-met mRNA的表达均有显著性差异（P〈0．05或P〈0．01）；乌司他丁1组与2组间比较，差异有显著性（P〈0.05）。细胞倍增时间及细胞抑制率比较，乌司他丁组与空白组间均有显著性差异（P〈0．05或P〈0．01），与对照组亦有非常显著性差异（P〈0．01）；乌司他丁1组与2组间比较，也有显著性差异（P〈O．05）。结论：乌司他丁可以明显抑制人胃癌BGC-823细胞原癌基因c-met mRNA的表达；乌司他丁可以明显延长人胃癌细胞的倍增时间，对细胞增殖具有明显的抑制作用，剂量增加，抑制作用越明显。     

乌司他丁和地塞米松对急性肺损伤治疗作用的比较

目的 评价乌司他丁对急性肺损伤的治疗效果。方法 将48例感染、休克、创伤等所致急性肺损伤患者分为地塞米松治疗组和乌司他丁治疗组，比较两组患者治疗前后的氧合指数变化和C反应蛋白浓度变化，并进行统计分析。结果 地塞米松组和乌司他丁组治疗后的氧合指数均有提高，与治疗前相比差异有显著性（P〈0．05）；地塞米松组和乌司他丁组治疗后的C反应蛋白浓度均有下降，与治疗前相比差异有显著性（P〈0．05）；地塞米松组和乌司他丁组的治疗效果相近，两组比较差异无显著性（p〉0．05）。结论 乌司他丁和地塞米松对急性肺损伤均有治疗作用．且疗效相近，故乌司他丁可替代地塞米松用于急性肺损伤的治疗，从而避免激素治疗带来的不良反应。     

乌司他丁对大鼠胰腺缺血再灌注损伤的保护作用

目的探讨乌司他丁对大鼠胰腺缺血再灌注损伤的保护作用。方法SD大鼠72只随机分为假手术组、缺血再灌注组和乌司他丁组。分别检测胰腺缺血再灌注0h、6h、12h及24h血清中肿瘤坏死因子α（TNF-α）、白细胞介素1β（IL-1β）的变化。结果缺血再灌注组的各时点上TNF-α含量明显高于假手术组和乌司他丁组（P〈0．05）；缺血再灌注组和乌司他丁组在6h、12h、24h的IL-1β含量较假手术组明显增加（P〈0．05），但乌司他丁组增高水平明显低于缺血再灌注组（P〈0．05）。结论乌司他丁可以抑制大鼠胰腺缺血再灌注损伤所致的急性炎性反应，对大鼠胰腺缺血再灌注损伤有保护作用。     

乌司他丁用于肺动脉灌注后对肺功能的影响

目的：探讨肺动脉灌注含乌司他丁低温肺保护液后患者肺功能的影响。方法：择期二尖瓣置换手术病人60例,随机分成两组,每组30例,乌司他丁组（乌司他丁0．5万u／kg,加入4℃舍氧冷血灌注液中进行肺动脉根部灌注）;对照组（4℃合氧冷血灌注液进行肺动脉根部灌注）。检测体外循环（CPB）前、CPB后1／2、6h的肺泡氧和指数（OI）、呼吸指数（RI=A—aD02／Pa02）。结果：（1）体外循环后1／2h实验纽与对照组OI、RI差异无统计学意义,但较术前升高有统计学意义（P〈0．01）;（2）体外循环后6h实验组OI、RI组明显低于对照组,差异显著（P〈0．01）。结论：乌司他丁能通过抑制炎症因子TNF—a的产生,促进抗炎因子IL-10的释放,调整机体促炎系统及抗炎系统动态平衡,从而抑制白细胞的激活、肺内聚集,减轻体外循环后肺损伤和通气功能障碍,减轻肺损伤,改善术后肺功能。     

GM-CSF在急性胰腺炎肺损伤中的作用及药物干预实验

目的：旨在研究巨粒细胞-噬细胞集落刺激因子（Granulocyte - macrophage colony stimulating factor,GM—CSF）在急性胰腺炎相关肺损伤中的作用及中药胰炎合剂治疗肺损伤的作用机理。方法：健康Wistar大鼠120只,随机分为：模型组、胰炎合剂治疗组、乌司他丁治疗组及阴性对照组。通过向胆胰管内逆行注射5％的牛黄胆酸钠,制成急性坏死性胰腺炎肺损伤动物模型。分别予胰炎合剂和乌司他丁治疗,分析各组不同时间点肺湿干重比（W／D）、肺髓过氧化酶活性（Myeloperxidase,MPO）、肺组织GM—CSF水平变化。结果：模型组大鼠肺组织中GM—CSF,MPO及w／D明显升高（P〈0．01）,12～24h达高峰;除6h亚组外,胰炎合剂治疗组与乌司他丁治疗组GM—CSF、MPO和W／D相比无明显差异（P〉0．05）。模型组、胰炎合剂组和乌司他丁组肺组织中GM—CSF与MPO和W／D呈正相关（r分别为0．6661和0．7668,P值均小于0．01）。肺MPO与w／D亦呈正相关（r=0．5706,P〈0．01）。结论：GM—CSF在急性胰腺炎相关肺损伤的发病过程中起关键作用,其作用机理可能与其能促进中性粒细胞在肺内的聚集有关。胰炎合剂能减轻肺水肿或肺类症．能有效的抑制肺内GM-SCF会号．对急性胰腺炎相关肺捐伤有明显的治疗作用．     

乌司他丁对胰腺缺血-再灌注损伤大鼠血清炎性因子TNF-α和IL-1β的影响

目的探讨乌司他丁是否能抑制胰腺缺血再灌注损伤大鼠炎性因子的释放.方法SD大鼠72只随机分为假手术组、缺血再灌注组和乌司他丁组.分别检测胰腺缺血再灌注0、6、12h及24h血清中肿瘤坏死因子α（TNF-α）、白细胞介素1β（IL-1β）的变化.结果缺血再灌注组的各时点TNF-α含量明显高于假手术组和乌司他丁组（P〈0.05）;缺血再灌注组和乌司他丁组的IL-1β含量在6h、12h、24h较假手术组明显增加（P〈0.05）,但乌司他丁组增高水平明显低于缺血再灌注组（P〈0.05）.结论乌司他丁可以抑制胰腺缺血再灌注损伤大鼠炎性因子的释放,对大鼠胰腺缺血再灌注损伤有保护作用.     

不同剂量乌司他丁在婴幼儿体外循环中的肺保护作用

目的研究乌司他丁 (UTI)在婴幼儿体外循环 (CPB)心脏直视手术中对炎性因子的影响及肺保护作用。方法 36例小儿先心病患儿随机分为 3组 ,每组 12例 ,U1组UTI 5 0 0 0U/kg、U2组UTI 10 0 0 0U/kg、对照组 (C组 )用等量生理盐水代替。分别在麻醉诱导后 (T1)、体外循环结束 (T2 )和术后 2h(T3 )等时点采集血样 ,检测血浆IL 6、IL 8、IL 10和TNF α。同时记录气道平均压、呼吸系统总顺应性 (Crs)、吸入氧浓度和动脉血气。结果与对照组相比 ,乌司他丁组体外循环中及术后 2hCrs明显升高 (P <0 .0 5 ) ,血浆IL 6、IL 8、TNF α明显降低 (P <0 .0 5 ) ,血浆IL 10明显升高 (P <0 .0 5 )。结论乌司他丁能有效地抑制体外循环心脏直视手术患儿围术期促炎细胞因子的释放 ,并上调抗炎细胞因子 ,因而能减轻体外循环引起的急性炎症反应 ,改善呼吸系统总顺应性 ;10 0 0 0U/kg剂量的乌司他丁较使用 5 0 0 0U/kg者的肺保护作用更佳     

乌司他丁在体外循环中肺保护机制的研究

目的探讨体外循环（cardiopulmonary bypass,CPB）所引起的肺组织炎性损伤,研究术中应用乌司他丁（UTI）对肺的保护作用及可能的机制。方法25例患者随机分为两组,实验组于转流后将UTI加入体外循环机中。动态检测两组患者左、右房中性粒细胞数（polymorphonuclear neutrophils,PMN）、血小板数（Plt）;血清白细胞介素-6（IL-6）、白细胞介素-10（IL-10）、肿瘤坏死因子-α（TNF-α）水平;肺顺应性;CPB后肺组织电镜检查变化结果。结果①对照组心脏复跳后左房PMN、Pt明显低于右房（P〈0．05）;②CPB开始后,两组桡动脉血IL-6、TNF-α进行性升高,心脏复跳后逐渐下降,对照组增高更显著（P〈0．05）。③CPB开始后,两组桡动脉血IL-10进行性增高,心脏复跳后逐渐下降,实验组增高更显著（P〈0．05）。④肺顺应性在停CPB后均降低,对照组降低更显著,与实验组比较有显著差异（P〈0．05）。⑤电镜观测：实验组Ⅰ型、Ⅱ型肺泡细胞内细胞器、细胞形态学的改变较轻。结论UTI能减轻CPB后肺损伤,保护术后肺功能。     

乌司他丁对急性胰腺炎的疗效观察

目的：回顾性分析乌司他丁治疗急性胰腺炎的疗效。方法：2002—2005年诊治的急性胰腺炎45例,按不同治疗方法分为乌司他丁组（n=20）、常规疗法组（n=25）,观察乌司他丁治疗急性胰腺炎的临床疗效。结果：乌斯他丁组的临床症状、体征及实验室数据与常规疗法组相比差异有统计学意义（P〈0．05）。结论：乌司他丁是治疗急性胰腺炎的安全而有效的药物,可以缩短疗程,提高疗效。     

乌司他丁复合氧氟沙星对大鼠肠黏膜二胺氧化酶的影响

目的通过检测大鼠肠黏膜中的二胺氧化酶（DAO）,来评价乌司他丁复合氧氟沙星对脓毒症大鼠肠黏膜的保护作用。方法脓毒症大鼠80只,随机均分为四组：空白对照组（C组）、氧氟沙星组（O组）、乌司他丁组（U组）和氧氟沙星加乌司他丁组（O＋U组）,每组再分为12h和24h两组。O组给予氧氟沙星8mg／kg,U组给予乌司他丁15×10^4U／kg,O＋U组则同时给予氧氟沙星8mg/kg和乌司他丁15×10^4U／kg,2次／d,连续2d,C组给予生理盐水4ml／kg作为对照。在治疗后24h和48h取大鼠肠组织检测DAO,观察肠黏膜DAO的变化情况。结果肠组织DAO在治疗组中均明显升高,O组、U组与C组比较差异有统计学意义（P〈0．05）,O＋U组与C组比较差异有显著统计学意义（P〈0．01）,O＋U组与O组、U组比较差异有统计学意义（P〈0．05）,O组与U组之间差异无统计学意义（P〉0．05）。结论乌司他丁能保护肠黏膜的屏障功能,增加肠黏膜中DAO的活性,与抗感染药物合用效果更为明显。     

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.