凋亡相关基因bcl—2,bax,Fas及FasL在乙型肝炎病毒相关性？…

目的 探讨原发性肝癌中乙型肝炎病毒感染与凋亡基因ｂｃｌ－２、ｂａｘ、Ｆａｓ及ＦａｓＬ表达的关系。方法 采用免疫组化技术分析４０例原发肝细胞癌组织中乙肝病毒表现抗原（ＨＢｓＡｇ）阳性组和ＨＢｓＡｇ阴性组ｂｃｌ－２、ｂａｘ、Ｆａｓ及ＦａｓＬ的表达。结果 癌组织中ＨＢｓＡｇ阳性率为３０％（１２／４０）,癌旁组织中ＨＢｓＡｇ阳性率为６２．５％（２５／４０）,１２例ＨＢｓＡｇ阳性的癌组织中ｂｃｌ－２的ｂａｘ     

外源p53基因和TNFa基因转导对膀胱癌细胞在裸鼠体内的生长抑制

通过逆转录病毒载体将野生型ｐ５３基因、ＴＮＦａ基因单独或与ＩＬ－６基因连接（ＴＮＦＩＬ－６）分别导入膀胱癌细胞株ＥＪ和ＢＩＵ－８７．裸鼠致瘤试验和体外生长实验显示：ｐ５３基因转染组细胞接种裸鼠后９周无肿瘤生长，体外生长速率明显降低，Ｎｏｒｔｈｅｒｎ杂交显示Ｈ－ｒａｓ基因表达明显低于非转染组细胞，ＴＮＰａ基因和ＴＮ刊ＩＬ－６基因转染组裸鼠瘤体积明显小于对照组，体外生长速率与对照组无显著差别，两种细胞因子对Ｈ－ｒａｓ基因表达无影响。     

p53单链构象多态性变化与食管鳞癌患者术后生存期的关系

目的：探讨ｐ５３基因单链构象多态性变化与食管鳞癌患者术后生存期的关系。方法：采用聚合酶链反应－单链构象多态性（ＰＣＲ－ＳＳＣＰ）结合银染技术,对４７例河南林县食管鳞癌患者癌组织及癌旁正常组织中ｐ５３基因第５～８外显子进行比较。结果：ｐ５３基因第５～８外显子出现异常电泳条带者２０例（４２．６％）;生存期大于５ａ组与生存期小于５ａ组,ｐ５３基因单链构象多态性变化发生率分别为３２．１％（９／２８）和５７     

膀胱移行细胞癌ras,p53基因点突变检测及其临床病理学意义

为探讨基因的改变在膀胱移行细胞癌发生过程中的意义，应用聚合酶链反应——限制性片段长度多肽性（ＰＣＲ－ＲＦＬＰ）法，检测５０例膀胱移行细胞癌ｒａｓ、ｐ５３基因突变。结果显示：正常膀胱粘膜未检测到基因突变，膀胱移行细胞癌Ｈａ－ｒａｓ基因第１２位密码子突变为１６例（３２％），ｐ５３基因突变为９例（１８％），均系２４８位点突变。Ｈａ－ｒａｓ－１２位点突变率随病理分级增高而增高，与膀胱移行细胞癌分级显著相关（Ｐ＜０．０５）。ｒａｓ基因、ｐ５３基因突变患者死亡率高于无突变患者。４例膀胱移行细胞癌存在ｒａｓ基因及ｐ５３基因共同突变。     

阿欠茨海默病患者脑脊液中Fas抗原含量的变化

目的　探讨Ａｌｚｈｅｉｍｅｒ 病（ＡＤ） 患者脑脊液（ＣＳＦ） 中细胞凋亡因子Ｆａｓ 抗原含量变化的临床意义。方法　采用ＥＬＩＳＡ方法测定了２７ 例ＡＤ、１２ 例多发梗死性痴呆（ＭＩＤ） 和对照组１７ 例患者ＣＳＦＦａｓ 抗原含量。结果　患者ＣＳＦ中Ｆａｓ 抗原含量为ＡＤ 组（１１－１１９ ±３－０９５） ｎｇ／ｍｌ,稍低于ＭＩＤ 组的（１２－６６０ ±７－８９３） ｎｇ／ｍｌ 及对照组的（１３－２７０±８－４９１） ｎｇ／ｍｌ,但三组间Ｆａｓ 含量的差异无统计学意义（Ｐ＞０－０５）;ＡＤ组中不同年龄段或不同痴呆程度患者的ＣＳＦＦａｓ 抗原水平的差异均无显著性（均为Ｐ＞ ０－０５） 。结论　ＣＳＦ中Ｆａｓ 抗原含量的变化对ＡＤ的诊断及鉴别诊断似无重要意义。     

小儿急性白血病患者血清IFN—γ和sFas测定及相关性研究

目的：了解小儿急性白血病的免疫机理,探讨细胞因子和Ｆａｓ系统在小儿白血病中的作用,以便为临床免疫提供可靠的理论依据。方法：应用双抗体夹心酶联免疫吸附检测了３９例急性白血病患儿化疗前后血清ＩＦＮ－γ及ｓＦａｓ水平,与对照组比较并对ＩＦＮ－γ与ｓＦａｓ进行了相关分析。结果：（１）化疗前白血病患儿血清ＩＦＮ－γ水平明显降低（Ｐ〈０．０１）;ｓＦａｓ水平明显长高（Ｐ〈０．０１）,且女性较男性血清ｓＦａｓ升高更明显。（２）化疗后达完全缓解时,血清ＩＦＮ－γ水平上升,而ｓＦａｓ水平下降,与正常对照无明显差异（Ｐ〉０．０５）。（３）ＩＦＮ－γ及ｓＦａｓ之间未证实有明显相关性（ｒ＝－００７９,Ｐ,０．０５）。结论：急性白血病免疫机理与细胞因子功能失调及凋亡功能障碍有密切关系,这些生物因子的异常与白血病的发生、发展有一定关系。     

Fas调节白血病细胞HL-60内Stat3的表达和磷酸化

观察Ｆａｓ对ＨＬ－６０细胞的异常增殖是否有调节作用。方法用基因重组技术将Ｆａｓ的细胞外区跨膜区与ＩＬ－６信号传导子ｇｐ１３０细胞区内构成嵌合型受体（Ｆａｓ／１３０）,同时,将Ｆａｓ死亡区域（ＦａｓＤＤ）替换Ｆａｓ／１３０中１３０细胞内区无结构域部分（Ｆａｓ／１３０ｆ）,分别在ＨＬ－６０中表达后,用抗Ｆａｓ抗体激活这些嵌合型受体,随后用免疫组化和蛋白质印迹法分析受体细胞内区形成同源性三聚体（１３０ｃ     

结直肠癌患者术前预防应用头孢三嗪血液和组织药物浓度测定

观察重组组织型纤溶酶原激活剂（ｒｅｃｏｍｂｉｎａｎｔ ｔｉｓｓｕｅ－ｔｙｐｅ ｐｌａｓｍｉｎｏｇｅｎ ａｃｔｉｖａｔｏｒ， ｒｔ－ＰＡ）治疗急性心肌梗死的疗效。方法： ５３例急性心肌梗死患者，于 ６０ｍｉｎ或 ９０ｍｉｎ内给予ｒｔ－ＰＡ总量为 ５０ ｍｇ，观察血管再通的临床指标、低血压、出血及寒战等并发症。结果：总血管再通４２例（４２／５３），其中，６０ ｍｉｎ组及９０ ｍｉｎ组再通者分别有１９例（１９／２８）、２３例（２３／２５）。不良反应发生中，一过性低血压６例（６／５３），轻度出血７例（７／５３），发生寒战 １例（１／５３），一般不需处理自行消失。结论：ｒｔ－ＰＡ是一种安全、有效的溶栓剂。     

蟾皮提取液对肾癌细胞凋亡及Fas,FasL和bcl—2表达的影响

目的：探讨蟾皮对肾癌细胞ＧＲＣ－１凋亡的诱导作用及Ｆａｓ、Ｆａｓ配体（Ｆａｓ Ｌｉｎａｎｄ,ＦａｓＬ）和ｂｃｌ－２表达的影响,了解其抑制肿瘤的分子生物学机制。方法：用末端脱氧核苷酰转移酶法（ＴｄＴ－ｍｅｄｉａｔｅｄ ｄＵＴＰｎｉｃｋ ｅｎｄ ｌａｂｅｌｉｎｇ,ＴＵＮＥＬ）流式细胞技术检测细胞凋亡,免疫细胞化学检测Ｆａｓ、ＦａｓＬ和ｂｃｌ－２的表达。结果：当蟾皮提取液浓度分别为０μｇ／ｍｌ,０．０１     

卵巢癌细胞凋亡和细胞倍性与p53基因突变的关系

目的了解Ｐ５３基因突变、细胞倍性、细胞凋亡三者的关系,探讨突变型Ｐ５３基因在肿瘤发生中的作用机制。方法应用ＰＣＲ－ＳＳＣＰ检测２０例正常卵巢组织、２０例良性卵巢肿瘤、４５例恶性卵巢癌（其中肿瘤未转移组２０例,肿瘤转移组２５例）患者的Ｐ５３基因突变,流式细胞仪Ｆａｃｓｃａｎ检测卵巢癌细胞染色体倍性,凋亡率及其在细胞周期各相中的分布情况。结果卵巢癌转移组的Ｐ５３基因突变率为６０％,未转移组为４０％（Ｐ     

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.