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1.
应用细胞培养、核酸斑点杂交、~3H-胸腺嘧啶核苷(~3H-TdR)掺入、免疫细胞化学、图像分析等技术观察c-myc反义寡核苷酸(ODNs)对低氧内皮细胞条件培养液(HECCM)诱导的大鼠肺血管周细胞c-myc mRNA表达、增殖细胞核抗原(PCNA)表达及~3H-TdR掺入量的影响。结果表明,HECCM显著促进周细胞 c-myc mRNA表达、PCNA表达(P<0.01)及~3H-TdR掺入量增加(P<0.01),反义ODNs显著阻抑 HECCM诱导的周细胞c-myc mRNA表达、PCNA表达(P<0.01)及~3H-TdR掺入量增加(P<0.05),而同义ODNs无上述作用(P>0.05)。结果提示,HECCM可通过上调c-myc基因表达促进肺血管周细胞增殖,反义ODNs通过下凋c-myc基因表达,抑制HECCM诱导的肺血管周细胞增殖。  相似文献   

2.
该文利用免疫组化检测了40例霍奇金病(HD)/H细胞bcl-2,ras、cyclin D1的表达,并对其相关关系进行了研究。结果显示:bcl-2和fas蛋白一信号在RS/H细胞中主要呈浆膜型。在HD上亚型LP,NS,MC和LD中bcl-2阳性细胞密度逐渐增高(P〈0.05),而fas阳性细胞密度依次降低(P〈0.05);并呈明显负相关(r=-0.5690)。在40例HD中cyclin D1阳性表达  相似文献   

3.
应用免疫组化S-P法检测了111例大肠癌及57例癌旁粘膜组织的C-erbB-2癌基因蛋白和PCNA表达状况。结果表明:①大肠癌组织C-erbB-2癌基因蛋白和PCNA阳性表达率分别为48.6%,72.1%;癌旁粘膜仅为28.1%,14.8%;前者C-erbB-2(P<0.05)foPCNA(P<0.01)的表达率显著高于后者。②C-erbB-2癌基因蛋白和PCNA阳性率与癌组织分化程度及淋巴结转移有显著相关性(P<0.05)。提示:测定C-erbB-2癌基因产物和PCNA,有助于对大肠癌生物学行为的进一步认识及患者预后的分析。  相似文献   

4.
目的探讨p53、p21、及c-erbB-2蛋白与大肠癌发生和发展的关系。方法运用免疫组化方法检测p53、p21、及c-erbB-2蛋白在68例大肠癌、11例大肠腺瘤、26例癌旁粘膜及15例正常大肠粘膜中的表达情况。结果①正常粘膜及癌旁粘膜中无p53蛋白过度表达。大肠癌p53蛋白表达率比腺瘤高(P<0.05)。正常粘膜p21及c-erbB-2蛋白的阳性表达率比癌、腺瘤及癌旁粘膜低(P<0.01或P<0.05)。②正常粘膜以3种蛋白全部阴性者为多,癌旁粘膜以1种蛋白阳性或全阴者为多。③p53及c-erbB-2蛋白阳性的大肠癌和腺瘤的PCNA(proliferatingcelnuclearantigen,PCNA)增殖指数高(P<0.01或P<0.05),而p21蛋白阳性及阴性的大肠癌和腺瘤的PCNA指数无明显差别(P>0.05)。p21及c-erbB-2蛋白阳性对癌旁粘膜及正常粘膜的PCNA增殖指数无明显影响。结论癌基因和抑癌基因蛋白协同表达可能与大肠腺瘤和癌的发生有关,尤其与p53蛋白的关系较为密切,似通过导致细胞过度增殖而使肿瘤发生和恶性转化。  相似文献   

5.
目的 观察细胞周期蛋白D1(Cyclin D1)在肺癌发生中的作用及其与生物学行为的关系。方法 收集肺癌及癌前病变和正常肺组织,采用免疫组化SP法检测Cyclin D1的表达。结果 正常肺组织和鳞状化生的支气管上皮未见Cyclin D1表达;在轻→中→重度不典型增生、原位癌、浸润癌,Cyclin D1表达的阳性率逐渐升高,阳性细胞数也增多,低分化癌的阳性率高于中高分化癌(P< 0.05)。Cyclin D1阳性组的增殖活性高于阴性组(P< 0.05) ;肺鳞癌有淋巴结转移组Cyclin D1的阳性率高于无转移组(P< 0.05) 。结论 Cyclin D1表达与肺癌的发生和增殖有关,而且Cyclin D1表达是支气管粘膜上皮癌变的早期表现。Cyclin D1表达与肺鳞癌分化不良及淋巴结转移有关,可能是预后不良的标志。  相似文献   

6.
大肠癌、大肠腺瘤Cyclin D1、P16和PCNA蛋白表达及其意义   总被引:1,自引:1,他引:0  
探讨细胞周期调控因子蛋白表达在大肠癌发生发展中的作用及其对预后影响。方法采用免疫组化染色对113例大肠癌、14例大肠腺瘤、11例腺瘤癌变化组织中CyclinD1,P16和PCNA进行了检测。结果大肠癌、腺癌和癌变CyclinD1,P16以PCNA阳性表达率与大肠粘膜相比均相差异显著(P〈0.05)腺瘤癌变ChClinD1表达明显增高,大肠癌P16表达明显降低,大肠癌、腺癌癌变的PCN较腺癌组显著增  相似文献   

7.
刘荣福  邵国兴  扬力军  王禾  刘凡  陈宝琦 《医学争鸣》1999,20(10):S068-S069
0 引言 CDK抑制剂(cyclin-dependentkinaseinhibitor,CDKI),是细胞周期负调节因子,被认为具有抑癌基因活性.p21基因是1993年发现的第一个CDKI基因[1],其主要作用为:抑制CDK2,4,6等活性,推测其在细胞周期的多个环节上普遍起作用;是含增殖细胞核抗原(proliferatingcellnuclearantigen,PCNA)在内的cyclinD-CDK四聚体中的一员[2],能够直接结合和抑制PCNA,而抑制DNA的复制.p53基因通过结合p21基…  相似文献   

8.
Cyclin D1,p16在卵巢上皮性癌发生过程中的表达及相关性   总被引:3,自引:1,他引:2  
王健  辛晓燕 《医学争鸣》2000,21(3):350-353
研究CyclonD1.p16在卵巢上皮性癌发生过程中的表达及相关性。方法采用免疫组织化学SABC法检测卵巢上皮性癌,交界性,良性卵巢肿瘤及正常卵巢组织Cyclin,D1,p16的表达。结论CyclinD1和P16在卵巢上皮性肿瘤癌变过程中,两者表达水平的相关性反映了癌基因了与抑癌基因相互拮抗、抑制的机制。  相似文献   

9.
结肠腺瘤与腺癌p53,c—erbB2蛋白及CEA的表达和意义   总被引:1,自引:0,他引:1  
应用免疫组化法检测15例正常结肠粘膜,40例结肠瘤及40例结肠癌组织的p53,c-erbB2和CEA的表达。结果发现:结肠癌患者p53,c-erbB2及CEA的阳性表达率均显著高于腺瘤(P〈0.01)。p53阳性表达在不典型增生腺瘤患者中,重度显著高于轻度病例(P〈0.01);在结肠腺癌患者中低分化显著高于高分化病例(P〈0.05);CEA的新型单克隆抗体col-1对结肠癌的敏感性和特异性均高,阳  相似文献   

10.
目的:探讨CyclinD1基因表达与喉癌发生发展的关系。方法:应用S-P免疫组化方法检测10例声带息肉组织及44例喉鳞癌组织中CyclinD1蛋白的表达。结果:CyclinD1在喉癌组织中的阳性表达率为68.3%(30/44),在声带息肉组织中的阳性率为30.0%(3/10),是者差别有统计学意义,P〈0.05,而在癌旁正常组织中未见表达。CyclinD1蛋白表达与喉癌患者年龄、淋巴结合转移无明显  相似文献   

11.
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.  相似文献   

12.
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.  相似文献   

13.
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.  相似文献   

14.
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.  相似文献   

15.
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.  相似文献   

16.
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.  相似文献   

17.
In recent years, the author of this essay has applied electro-acupuncture combined with the trigger point needle-embedding for treatment of primary trigeminal neuralgia in 31 cases, yielding satis- factory results as reported in the following.  相似文献   

18.
Objective: To explore the role of matrix metalloproteinase-1,2 (MMP-1, MMP-2) and tissue inhibitor of matrix metalloproteinases-1 (TIMP-1) in endometriosis. Methods: The eutopic and ectopic endometria from 40 subjects suffering from endometriosis and regular.endometria from 40 subjects (excluding endometriosis) were collected and examined by in situ hybridization technology and western blot assay. Results: Both expressions of MMP-1 and -2 were stronger in ectopic endometrium and eutopic endometrium than in normal endometrium. On the contrary, the expression of TIMP-1 in ectopic endometrium and eutopic endometrium was lower. The differences were significant (P 〈 0.01 ). Moreover, there was no relationship among the expressions of MMP-1, 2 and TIMP-1 in ectopic endometrium. Conclusion: The expressions of MMP-1, 2 and TIMP-1 lose balance and lack of periodic changes in ectopic endometrium , which explains the biological invasive behavior of endometriosis. It was suggested-that regulating the balance between the MMPs and TIMP-1 should be an ideal therapeutic target to endometriosis.  相似文献   

19.
Prof. SHI Da-zhuo, Ph.D., male, was born on March 20, 1960. Prof. SHI entered the Ph.D. program in 1990 at the China Academy of Chinese Medical Sciences under the supervision of Prof. CHEN Ke-ji, majoring in the treatment of cardiovascular diseases. After receiving his Ph.D. degree in 1993, Prof. SHI started working at the Cardiovascular Center in Xiyuan Hospital affiliated to China Academy of Chinese Medical sciences.  相似文献   

20.
《中国结合医学杂志》2008,14(2):159-159
The 6th National General Congress of Chinese Association of Integrative Medicine (CALM) was convened at 19-20, April 2008 in Beijing. Academician CHEN Zhu, the minister of Ministry of Health indicated at the congress that the integration of Chinese and Western medicine is very well in keeping with the situation of our country and the general rule of development in medical science; and as a good integration of Chinese medicine and Western medicine, it is mutually beneficial and advantageous to both of them. Seeing the creativity shown in integrative medical investigation in theoretic and methodological sides, we should and must persist in and develop it.  相似文献   

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