非小细胞肺癌端粒酶活性表达及其临床意义

目的 :探讨非小细胞肺癌组织端粒酶活性表达及其临床意义。方法 :应用TRAP -PCR -ELISA方法检测36例非小细胞肺癌组织及相应的 32例癌旁组织 ,9例肺良性病变组织和 9例正常肺组织中端粒酶活性表达。结果 :肺癌组织中端粒酶活性表达阳性率为 75 % (2 7/ 36 ) ,癌旁组织为 6 .2 5 % (2 / 32 ) ,肺良性病变组织为 11.1% (1/ 9) ,正常肺组织为 0 % (0 / 9)。肺癌组织端粒酶活性表达与肺癌病理类型、组织分化程度、原发肿瘤大小、淋巴结转移情况及临床分期无明显相关。结论 :端粒酶在肺癌组织中的高表达可作为肺癌诊断和鉴别诊断的重要分子生物学指标之一     

端粒酶活性与口腔鳞状细胞癌的相关性

目的 :探讨端粒酶在口腔鳞状细胞癌中的表达及其与口腔鳞状细胞癌发生发展的关系。方法 :采用端粒重复序列扩增 (telomericrepeatamplificationprotocol,TRAP)方法检测 30例口腔鳞状细胞癌患者术后标本中的病变组织及其癌旁正常组织 ,并分析其与临床病理的相关性。结果 :30例口腔鳞状细胞癌组织中端粒酶阳性表达率为 73.3% (2 2 / 30 ) ,而 30例癌旁正常组织中无 1例表现出端粒酶阳性。T1～T2 期 2 1例中端粒酶阳性表达率为 6 1.9% (13/ 2 1) ;T3 ～T4期 9例均为端粒酶阳性表达 (10 0 % )。 30例口腔鳞状细胞癌样本中Ⅰ级17例 ,端粒酶阳性表达率为 5 8.8% (10 / 17) ;Ⅱ级 8例 ,端粒酶阳性表达率为 87.5 % (7/ 8) ;Ⅲ级 5例 ,均表达出端粒酶阳性 (10 0 % )。口腔鳞状细胞癌组织端粒酶活性的阳性率明显高于癌旁正常组织 (P <0 .0 5 ) ,且端粒酶活性与口腔鳞状细胞癌的临床分期及病理分级呈正相关 (P <0 .0 5 )。结论 :端粒酶活性表达在口腔鳞状细胞癌发病机制中具有重要作用 ,同恶性肿瘤的整个病程有关 ,与其恶性程度、浸润能力有相关性 ,可作为判断预后有价值的指标之一。     

端粒酶活性在非小细胞肺癌不同组织细胞中表达的研究

目的 对比研究端粒酶活性在非小细胞肺癌癌组织、癌旁组织、血液及痰液中的表达 ,以了解其临床意义。 方法 应用聚合酶联反应 -端粒重复序列扩增法 (PCR -TRAP)检测30例肺癌手术患者癌组织、癌旁组织、血液及痰液中的端粒酶活性 ,并以25例肺部良性疾病手术患者为对照组。结果 肺癌患者肺癌组织端粒酶活性阳性率83.3% (25/30) ,癌旁组织端粒酶活性阴性 ,外周血中端粒酶活性阳性率33.3 % (10/30) ,痰液标本中端粒酶活性阳性率56.7% (17/30)。对照组正常肺组织标本和外周血中端粒酶活性均阴性 ,痰液标本中端粒酶活性阳性率24.0% (6/25) ;两组病变组织、血液和痰液中端粒酶活性阳性率的差别均有显著性意义 (均P<0.05)。 结论 (1)非小细胞肺癌患者在肺癌组织、血液及痰液中均有端粒酶活性表达 ,其活性表达强度依次为肺癌组织、痰液、血液。 (2)痰液中端粒酶活性检测对肺部良恶性疾病的鉴别具有一定的诊断意义。     

Expression of telomerase activity， telomerase RNA component and telomerase catalytic subunit gene in lung cancer

目的：探讨hTR、hTERT与端粒酶活性的表达是否与肺癌的发生发展有关,深入了解端粒酶基因对端粒酶活性的调控是在基因水平还是在转录水平。方法：采用TRAP-PCR和RT-PCR方法分别检测68例肺癌组织、68例癌旁组织端粒酶活性、端粒酶基因hTR和hTERT的表达。结果：68例肺癌组织中端粒酶阳性率79%,HTR阳性率为98.5％,HTERT阳性率为91.2%。68例癌旁组织中,无一例表达端粒酶阳性,且大多数癌旁组织均表达HTR(91.2%),而HTERT在68例癌旁组织中仅7例为阳性。结论：肺癌组织中表达高频率的端粒酶活性而癌旁组织无一例表达端粒酶阳性说明了端粒酶的活性是肺癌发生发展所必须的。与HTR相比,HTERT同端粒酶具有更市制一致性,其一致率为88.9％。HTR与HTERT可能是在转录后或翻译水平对端粒酶进行调控的。     

大肠癌及其转移淋巴结中端粒酶活性的研究

目的　研究大肠癌、癌旁组织及转移淋巴结中端粒酶的活性表达 ,探讨其与大肠癌的生物学特性及预后诸因素的关系。方法　采用PCR ELISA法定量检测 34例大肠癌组织、2 0例癌旁组织及 1 6例转移淋巴结中端粒酶的活性 (TA)。结果　 34例大肠癌组织中 ,端粒酶阳性表达 31例 ,阳性率 91 2 %。 2 0例癌旁正常粘膜组织中 ,仅 2例为阳性 (1 0 % )。 1 6例转移淋巴结中 ,1 3例检出端粒酶活性表达 ,阳性率为 81 3 %。淋巴结转移“ +”的大肠癌组织与淋巴结转移“ -”的大肠癌组织端粒酶活性A值相比有显著差异 (P <0 .0 5)。大肠癌组织与癌转移淋巴结中端粒酶活性水平明显高于癌旁组织 (P <0 .0 1 )。端粒酶的活性表达与大肠癌的部位、病理类型、分化程度、分期及侵袭范围等临床病理因素无明显相关性。结论　端粒酶的活性水平与大肠癌的发生、发展密切相关 ,是一种特异性很强的恶性肿瘤标志物 ,有可能成为大肠癌早期诊断的标志物和治疗的新靶点     

非小细胞肺癌端粒酶活性的相对定量检测

应用端粒酶聚合酶链反应 (PCR) -酶联免疫吸附测定 (ELISA)法 ,检测手术切除标本中肺癌组织、癌旁组织及正常肺组织端粒酶活性。结果显示 :1 5例肺癌组织端粒酶活性为 0 84± 0 3 8;其中 8例鳞癌为 0 82± 0 3 9,7例腺癌为 0 86± 0 3 9,明显高于 1 5例癌旁组织 0 1 6± 0 0 3和 3例正常肺组织 0 1 4± 0 0 2 (均P <0 .0 0 1 )。以吸光度A450>0 .2 0为阳性 ,1 5例肺癌组织端粒酶活性阳性率为 86 7% (1 3 /1 5 ) ;其中腺癌阳性率为 85 7% (6 /7) ,鳞癌阳性率为87 5 % (7/8) ;而 1 5例癌旁组织和 3例正常肺组织端粒酶活性表达均为阴性。提示端粒酶活性可作为非小细胞肺癌诊断的特异性较强的分子标记物 ;TRAP PCR ELISA法检测端粒酶活性具有方法简便 ,结果可靠。     

大肠癌端粒酶活性的意义及其与人端粒酶催化亚基表达的相关性

目的 :研究大肠癌组织中端粒酶活性在大肠癌发生发展中的作用及其与人端粒酶催化亚基 (h TERT)表达的相关性。方法 :运用 PCR- TRAP- EL ISA及免疫组织化学方法 (免疫组化法 )对 30例大肠癌及相应的癌旁组织、正常大肠组织及 2 0例大肠腺瘤性息肉组织中端粒酶活性和 h TERT表达进行检测。结果 :1端粒酶在大肠癌组织中的阳性表达明显高于癌旁组织、正常大肠黏膜及大肠腺瘤性息肉 (P<0 .0 5 ) ;2大肠癌组织端粒酶与淋巴结转移关系密切 ,伴淋巴结转移大肠癌端粒酶阳性表达率明显高于无淋巴结转移者 (P <0 .0 1 ) ;3相关分析显示端粒酶活性与 h TERT表达存在相关性 (P <0 .0 5 )。结论 :端粒酶在大肠癌的发生发展过程中可能起着重要作用 ,h TERT的表达与端粒酶活性密切相关     

非小细胞肺癌端粒酶活力表达及其临床意义

目的：探讨非小细胞肺癌组织端粒酶活性表达及其临床意义。方法：应用TRAP－PCR－ELISA方法检测36例非小细胞肺癌组织及相应的32例癌旁组织,9例肺良性病变组织和9例正常肺组织中端粒酶活性表达。结果：肺癌组织中端粒酶活性表达阳性率为75％（27／36）,癌旁组织为6．25％（2／32）,肺良性病变组织为11．1％ （1／9）,正常肺组织为0％（0／9）。肺癌组织端粒酶活性表达与肺癌病理类型、组织分化程度、原发性肿瘤大小、淋巴结转移情况及临床分期无明显相关。结论：端粒酶在肺癌组织中的高表达可作为肺癌诊断和鉴别诊断的重要分子生物学指标之一。     

乳腺癌中端粒酶活性的测定及其意义

目的 :通过测定乳腺癌中端粒酶 ,探讨端粒酶活化与乳腺癌的发生发展和临床分期的关系。方法 :应用端粒酶重复序列扩增法及酶联免疫吸附法检测 35例乳腺癌组织、17例乳腺癌旁组织、10例乳腺纤维腺瘤组织、10例正常乳腺组织的端粒酶活性。结果 :端粒酶在乳腺癌、癌旁组织、乳腺纤维腺瘤、正常乳腺组织中表达的阳性率分别为 85 .7%、11.7%、10 %、0 ,乳腺癌中端粒酶表达阳性率明显高于癌旁组织、乳腺纤维腺瘤和正常乳腺组织 (P<0 .0 1)。端粒酶在乳腺癌中临床 期和临床 期的阳性表达率分别为 85 %、86 .6 % ,二者比较 ,无明显差异 (P>0 .0 5 )。结论 :端粒酶活化在乳腺癌的发生发展中起重要作用 ,端粒酶可作为诊断乳腺癌的一个新的理想肿瘤标志物。     

人大肠良恶性病变组织中端粒酶活性的表达

目的研究端粒酶活性在大肠癌、癌旁组织、正常大肠黏膜及大肠良性病变组织中的表达情况,探讨其作为大肠癌生物学标志物的可能性.方法PCT-TRAP-ELISA法检测30例大肠癌、癌旁组织及正常黏膜和20例大肠腺瘤性息肉组织中端粒酶活性水平.结果(1)30例大肠癌组织、癌旁组织、正常大肠组织及20例大肠腺瘤性息肉组织中端粒酶活性分别为83.33%,13.33%,3.33%和10.00%,癌组织中端粒酶活性明显高于其他组织(P＜0.05);(2)伴淋巴结转移大肠癌端粒酶阳性表达率为80%(8/10),无淋巴结转移者为0%(0/20),二者比较有非常显著性差异(P＜0.001);(3)大肠癌组织端粒酶活性随组织学分级、临床分期而呈逐渐增高趋势,但统计学处理差异无显著性(P＞0.05).结论端粒酶活性的检测可作为大肠癌诊断的指标之一,对判断大肠癌的预后具有重要参考价值.     

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.