胃癌组织中PTEN和p53基因的表达

①目的　探讨抑癌基因PTEN和p5 3在胃癌组织中的表达及其与胃癌发生发展、临床病理特征之间的关系。②方法　应用免疫组织化学链霉亲和素方法 (SABC) ,检测PTEN和突变型p5 3基因在 6 5例胃癌组织、2 6例不典型增生胃黏膜、10例浅表性胃炎和 30例正常胃黏膜组织中的表达。③结果　胃癌组织中PTEN、突变型p5 3基因的阳性表达率分别为 4 8%、6 5 % ,不典型增生胃黏膜中PTEN、突变型p5 3基因的阳性表达率为 85 %、31% ,突变型p5 3基因在正常胃黏膜和浅表性胃炎组织中不表达 ,PTEN基因在正常胃黏膜和浅表性胃炎组织中全部呈阳性表达。胃癌组织中PTEN基因、p5 3基因的表达与其在正常胃黏膜组织、不典型增生胃黏膜、浅表性胃炎组织中的表达差别有显著性 (uc=2 .6 1～ 4 .5 2 ,P <0 .0 5 ) ;随临床分期、胃癌分化程度降低、浸润深度加深、淋巴结的转移 ,突变型p5 3基因的阳性表达率逐渐上升 (χ2 =4 .388～ 8.76 4 ,P <0 .0 5 ) ,PTEN基因的阳性表达率逐渐降低 (χ2 =5 .4 91～ 8.0 2 0 ,P <0 .0 5 ) ;PTEN基因表达阳性的胃癌组织中突变型p5 3基因的阳性表达率显著低于PTEN基因表达阴性的胃癌组织 (χ2 =9.81,P <0 .0 5 )。④结论　PTEN和p5 3基因的异常表达与胃癌的发生有关 ;PTEN和p5 3基因可以作为判断胃癌生     

抑癌基因PTEN蛋白在肺癌组织表达的临床病理学意义

目的　研究抑癌基因PTEN蛋白在肺癌组织中的表达情况及其临床病理学意义。方法　应用免疫组织化学S -P法检测 66例肺癌组织中PTEN蛋白的表达 ,另有 1 0例癌旁肺组织作为对照组。结果　肺癌组织中PTEN蛋白的阳性表达率 2 7.3 % (1 8 66) ,显著低于癌旁肺组织 (90 .0 % ,9 1 0 ) ;PTEN在高中分化鳞癌组及低分化鳞癌组的阳性表达率分别为 55 .6 %和 0 ,具有显著性差异 (P <0 .0 1 ) ;PTEN蛋白阳性表达率与肺癌患者的年龄、性别、肿瘤体积、组织学类型、TNM分期及淋巴结转移均无明显关系 (P >0 .0 5)。结论　PTEN基因在肺癌的发生发展过程中起一定作用 ;PTEN蛋白的表达可能与肺鳞癌的分化程度有关     

抑癌基因PTEN在胃癌中的表达及其生物学意义

目的　探讨抑癌基因PTEN蛋白在胃癌组织中的表达状况及其生物学意义。方法　采用免疫组化染色方法检测 6例正常胃黏膜 ,2 4例早期胃癌及 3 0例中晚期胃癌组织中PTEN蛋白的表达。结果　正常胃黏膜组织中PTEN蛋白高表达( 10 0 % ) ,胃癌组织中PTEN低表达 ,且阳性强度较低 ,两者差异显著 (P <0 0 5 )。胃癌组织中PTEN蛋白表达与肿瘤分期及分化程度无明显关系 ,但有淋巴结转移者PTEN蛋白阳性率仅为 9 5 % ,而无淋巴结转移者PTEN蛋白表达阳性率达 69 7% ,两者间差异显著 (P <0 0 1)。结论　胃癌组织中存在着抑癌基因PTEN蛋白表达缺乏或异常 ,PTEN蛋白表达可能与胃癌的发生及生物学行为有关 ,抑癌基因PTEN是胃癌的一种新的相关基因     

PTEN基因mRNA和蛋白表达与胃癌病理生物学行为的关系

目的 :观察PTEN基因在胃癌发展不同阶段中的表达 ,探讨其作用机制。方法 :采用RT PCR方法和SABC免疫组化方法 ,对 4 9例胃癌及其相应的癌旁非癌胃粘膜中PTENmRNA和PTEN蛋白表达进行检测。结果 :PTENmRNA在非癌粘膜、早期胃癌、进展期胃癌的阳性表达率分别为 76 .3% ,4 5 .5 % ,34.2 % ;PTEN蛋白的阳性表达率为 10 0 % ,6 3.6 % ,4 7.4 %。进展期胃癌与非癌粘膜比较差别均十分显著 (P <0 .0 1)。两种检测方法具有相关性 (P <0 .0 5 )。PTEN表达下调与胃癌淋巴结转移和临床分期相关 (P <0 .0 5 )。胃癌组织学恶性行为与PTEN表达相关 (P <0 .0 5 )。结论 :PTEN基因可能参与胃癌的侵袭和转移过程。     

宫颈癌组织中PTEN基因表达及其临床意义

目的研究抑癌基因PTEN在宫颈癌组织中的表达，探讨PTEN与宫颈癌临床及病理特征的关系。方法应用免疫组织化学方法（SP法）检测PTEN基因在46例宫颈癌组织中的表达。结果46例宫颈癌组织中，PTEN阳性表达率为36．9％，其中在高、中、低分化宫颈癌中的阳性表达率分别为55．6％、41．7％和25．0％，PTEN阳性表达率与宫颈癌病理学类型和患者年龄无相关性（P〉0．05）；临床分期I期和Ⅱ期及以上者阳性表达率分别为58．8％和24．1％（P〈0．05）；有、无淋巴结转移者的阳性表达率分别为23．1％和42．4％（P〈0．01）；在直径〈4cm或≥4cm的宫颈癌组织中的阳性表达率分别为23．1％和55．0％（P〈0．05）；结论PTEN异常表达可能与宫颈癌发生、发展及预后有关。     

端粒酶在宫颈癌中的表达及意义

目的　探讨端粒酶与宫颈癌及与淋巴结转移的关系。方法　采用银染色端粒酶重复扩增法(TRAP)检测各类宫颈组织中端粒酶活性。结果　正常宫颈、慢性宫颈炎、宫颈上皮内瘤样病变组织端粒酶的阳性表达率分别为 6 .6 7%、8.5 7%、2 6 .32 % ,与宫颈癌组织阳性表达率 (78.85 % )比较具有非常显著性差异 (P <0 .0 1) ;宫颈癌组织无或有淋巴结转移其端粒酶活性阳性表达率分别为 6 9.70 %、94 .74 % ,两者之间比较亦有显著性差异 (P <0 .0 5 )。结论　端粒酶活性在宫颈癌组织中增高且与淋巴结转移相关     

抑癌基因P16在宫颈癌组织中的表达及临床意义

目的　探讨宫颈癌组织中抑癌基因P16表达及其与宫颈癌生长、浸润及转移的关系。方法　采用免疫组化(SP)法检测6 9例宫颈癌及2 0例正常宫颈组织中P16的表达。结果　2 0例正常宫颈组织中18例呈P16阳性表达,6 9例宫颈癌P16阳性表达率为5 5 .1% (38 6 9) ,P16阳性表达与宫颈癌的临床分期、病理分级及淋巴结转移有关(P <0 .0 1) ,而与宫颈癌的病理类型及年龄无关(P >0 .0 5 )。结论　P16的表达缺失可能在宫颈癌的发生、浸润及转移中起重要作用。     

CD44v7-8在宫颈上皮内瘤样病变及宫颈癌中的表达及临床意义

目的　探讨CD44v7 8在宫颈鳞状上皮内瘤样病变 (CIN)及宫颈鳞状癌中的表达及临床意义。方法　采用免疫组化S-P法对 10例正常宫颈、16例鳞状上皮CIN (其中轻度 5例、中度 5例、重度 6例 )、10例原位癌及 30例宫颈浸润癌标本中CD44v7 8的表达进行检测。结果　正常宫颈组织中 ,CD44v7 8无阳性表达。轻、中、重度CIN阳性表达率分别为 2 0 %、40 %及 6 6 .6 7%,各组间有极显著差异 (P <0 .0 1)。从鳞状上皮CIN→原位癌→宫颈浸润癌中 ,CD44v7 8阳性表达呈上升趋势 ,但原位癌与浸润癌间无显著差异 (P >0 .0 5 )。CD44v7 8阳性表达率与宫颈癌临床分期呈正相关 (P <0 .0 1) ,与病理分级无关(P >0 .0 5 )。有淋巴结转移者CD44v7 8阳性表达明显高于无淋巴结转移者 (P <0 .0 1)。结论　CD44v7 8阳性表达对宫颈癌的发生发展及评估预后有重要意义。     

PTEN在结直肠癌中的表达及其临床意义

目的　观察肿瘤抑制基因 PTEN蛋白在结直肠良、恶性组织中的表达水平 ,探讨 PTEN表达与结直肠癌发生、增殖、分化、转移等的相关性及其在结直肠癌诊断、治疗和判断预后的应用价值。　方法　采用免疫组织化学 SP法定性、半定量检测 /分析 110例结直肠癌组织、13例癌旁粘膜组织、17例结肠腺瘤组织、8例正常结肠粘膜组织的 PTEN的表达情况。　结果　 (1)结直肠癌、癌旁粘膜、结肠腺瘤、正常结肠粘膜 PTEN蛋白阳性表达率分别为 5 9.1% ,76 .9% ,76 .4 % ,10 0 %。结肠癌阳性表达率明显低于非癌组 ,P<0 .0 1。良性结肠粘膜组织 PTEN蛋白表达水平高于恶性结肠粘膜组织 (rs= - 0 .2 39,P<0 .0 5 )。 (2 )结直肠癌组中 PTEN蛋白的阳性检出率与患者性别、年龄、癌肿部位无关 (P>0 .0 5 )。 (3)PTEN表达水平与癌组织浸润深度呈负相关 (rs=- 0 .2 82 ,P<0 .0 5 )。 PTEN表达水平随淋巴结转移、癌远处转移呈逐渐下降趋势 (P<0 .0 5 )。 (4 ) PTEN表达水平与结直肠癌TNM分期 (rs=- 0 .4 70 ,P <0 .0 5 )、 Dukes'分期 (rs=- 0 .5 0 0 ,P<0 .0 5 )呈负相关 ,与病理组织分化呈正相关 (rs=- 0 .4 12 ,P相似文献   

抑癌基因PTEN在子宫内膜癌组织中的表达

目的 :了解抑癌基因PTEN在子宫内膜癌中的表达及与子宫内膜癌临床病理因素的相关性 ,探讨其与子宫内膜癌发生发展的关系 .方法 :运用免疫组织化学SABC法测定PTEN蛋白在 77(子宫内膜样腺癌 72 ,子宫浆液性癌 5 )例子宫内膜癌组织和 2 5例正常子宫内膜中的表达 ,并比较PTEN表达变化与组织学类型、手术临床分期、病理分级、子宫肌层浸润程度、淋巴结转移及患者年龄等临床病理因素之间的相关性 .结果 :子宫内膜癌组织中PTEN表达缺失率为 6 0 % ,与正常子宫内膜相比 (0 % )存在显著性差异 (P =0 .0 0 0 0 ) .子宫内膜样腺癌中PTEN的失表达率为 6 4 % ,而子宫浆液性癌为0 % ,二者差异显著 (P =0 .0 0 4 8) .PTEN的失表达率随内膜癌恶性程度的增加而增加 (P =0 .0 0 34) ,但与手术临床分期、肌层浸润程度、淋巴结转移及患者年龄等因素无关 (P >0 .0 5 ) .结论 :抑癌基因PTEN是在子宫内膜癌发生过程中占重要地位的突变基因 ,PTEN基因的失表达与子宫内膜癌 ,特别是子宫内膜样腺癌的发生发展密切相关     

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.