Wnt拮抗因子SFRP1在结直肠癌发病机制中的作用

目的 检测结直肠癌中Wnt拮抗因子分泌型卷曲相关蛋白1(SFRP1)基因的甲基化及表达状态,探讨SFRP1在结直肠癌发病中的作用.方法 选自中国医科大学盛京医院的结直肠癌组织标本及相应的癌旁组织标本各35例,利用逆转录聚合酶链反应( RT-PCR)和即时定量聚合酶链反应(real-time PCR)技术检测在结直肠癌组织和相应的癌旁组织中SFRP1的表达状态.利用甲基化特异性聚合酶链反应(MSP-PCR)技术检测结直肠癌组织和相应的癌旁组织中SFRP1的甲基化状态.利用RT-PCR和Western blot技术检测结直肠癌细胞中SFRP1的表达状态.结果 SFRP1 mRNA的表达水平在结直肠癌组织中明显低于癌旁组织(P＜0.01).SFRP1的甲基化频率结直肠癌组织(68.6％)明显高于癌旁组织(11.4％)( x2=21.49,P＜0.01).在结肠癌细胞HCT116、SW480和SW620中SFRP1未见表达,SFRP1存在甲基化,而在HT-29中SFRP1有表达,SFRP1无甲基化.对HCT116、SW480和SW620使用去甲基化试剂5-氮杂-2'-脱氧胞苷(DAC)处理后,SFRP1出现表达.结论 SFRP1甲基化是引起SFRP1在结直肠癌中表达下调的重要原因之一.SFRP1甲基化及其所致表达下调可能在部分结直肠癌的发病过程中起重要作用.     

子宫内膜癌中SFRP1基因启动子甲基化及其mRNA表达

目的研究子宫内膜癌中SFRP1基因启动子甲基化及其对SFRP1 mRNA表达的影响。方法应用甲基化特异性PCR技术检测36例子宫内膜癌组织和对应癌旁组织中SFRP1基因启动子甲基化状态,RT-PCR方法检测上述样本的mRNA表达水平,并对结果进行统计学分析。结果子宫内膜癌组织中SFRP1基因启动子甲基化的阳性率为47.2%,癌旁组织中为11.1%,两者比较差异有统计学意义(P=0.001)。14例存在启动子甲基化和5例无启动子甲基化的子宫内膜癌组织中缺乏SFRP1 mRNA表达或表达较癌旁组织明显下降。结论SFRP1基因启动子甲基化在子宫内膜癌中常见,部分成为其表达下降的原因。     

The significance of mRNA expression and methylation of SFRP1 promoter in invasive breast cancer

目的 探讨浸润性乳腺癌及相应癌旁乳腺组织中分泌型卷曲相关蛋白1(the secreted frizzled-related protein 1,SFRP1)基因的表达及其启动子CpG岛的异常甲基化状态,并分析其临床意义.方法 采用实时荧光定量PCR技术及甲基化聚合酶链反应(MSP)技术检测58例浸润性乳腺癌组织和相应癌旁乳腺组织中SFRP1基因的mRNA表达及其启动子CpG岛的异常甲基化情况,并分析其与临床病理参数之间的关系.结果 浸润性乳腺癌组SFRP1基因的甲基化显著高于癌旁乳腺组织组(P<0.05);腋窝淋巴结有转移的浸润性乳腺癌组SFRP1基因的甲基化显著高于腋窝淋巴结无转移组(P<0.05),而与其他临床病理参数无关.SFRP1在浸润性乳腺癌组的mRNA表达量与乳腺癌旁组比较,差异有统计学意义(P<0.05);在23例SFRP1基因启动子CpG岛发生异常甲基化的浸润性乳腺癌组,均未检测到SFRP1的mRNA表达.结论 SFRP1基因异常甲基化可能影响其 mRNA的转录水平;SFRP1基因启动子的甲基化与浸润性乳腺癌的发生发展有关,对其进行检测有可能为浸润性乳腺癌的早期诊断和判断预后提供帮助.     

胃癌组织中miR-124a基因甲基化的研究

目的:探讨人胃癌组织中hsa-miR-124a甲基化与Rb和CDK6表达关系。方法:以甲基化特异性PCR(MSP)检测60例胃癌及癌旁组织的hsa-miR-124aDNA甲基化状态;以免疫组织化学方法检测Rb和CDK6蛋白在胃癌组织中的表达。结果:癌组织hsa-miR-124a甲基化阳性率显著高于癌旁组织(P<0.05)。其甲基化状态与胃癌患者的肿瘤病理学特征显著相关(P<0.05)。且hsa-miR-124a高甲基化状态与CDK6和Rb蛋白表达正相关(r=0.47,P<0.05;r=0.41,P<0.05)。结论:胃癌组织中普遍存在hsa-miR-124a基因启动子区高甲基化,高甲基化可通过上调CDK6及Rb蛋白的表达促进胃癌的发展。     

卵巢上皮性癌组织中SFRP5基因启动子区甲基化与β-catenin蛋白表达检测

目的:检测卵巢上皮性癌组织中SFRP5基因启动子区甲基化与β-catenin蛋白的表达。方法:应用甲基化特异性PCR法和免疫组织化学SP法分别检测20例正常卵巢上皮组织、20例卵巢交界性上皮性肿瘤组织以及40例卵巢上皮性癌组织中SFRP5基因启动子区甲基化状态以及β-catenin蛋白的表达。结果:在正常卵巢上皮、卵巢交界性上皮性肿瘤以及卵巢上皮性癌组织中,SFRP5基因启动子区甲基化率分别为0.0%、10.0%、67.5%,差异有统计学意义(P<0.001);β-catenin蛋白的异常表达率分别为5.0%、40.0%、72.5%,差异有统计学意义(χ2=24.962,P<0.001)。卵巢上皮性癌组织中β-catenin蛋白的异常表达与SFRP5基因启动子区甲基化有关联(rP=0.468,P<0.001)。结论:SFRP5基因启动子区甲基化可能导致β-catenin蛋白异常表达,并可能通过激活Wnt/β-catenin信号传导通路促进卵巢上皮性癌的发生发展。     

浸润性乳腺癌SFRP1基因的表达及其启动子甲基化的意义

目的探讨浸润性乳腺癌及相应癌旁乳腺组织中分泌型卷曲相关蛋白1(the secreted frizzled-relat-ed protein 1,SFRP1)基因的表达及其启动子CpG岛的异常甲基化状态,并分析其临床意义。方法采用实时荧光定量PCR技术及甲基化聚合酶链反应(MSP)技术检测58例浸润性乳腺癌组织和相应癌旁乳腺组织中SFRP1基因的mRNA表达及其启动子CpG岛的异常甲基化情况,并分析其与临床病理参数之间的关系。结果浸润性乳腺癌组SFRP1基因的甲基化显著高于癌旁乳腺组织组(P<0.05);腋窝淋巴结有转移的浸润性乳腺癌组SFRP1基因的甲基化显著高于腋窝淋巴结无转移组(P<0.05),而与其他临床病理参数无关。SFRP1在浸润性乳腺癌组的mRNA表达量与乳腺癌旁组比较,差异有统计学意义(P<0.05);在23例SFRP1基因启动子CpG岛发生异常甲基化的浸润性乳腺癌组,均未检测到SFRP1的mRNA表达。结论 SFRP1基因异常甲基化可能影响其mRNA的转录水平;SFRP1基因启动子的甲基化与浸润性乳腺癌的发生发展有关,对其进行检测有可能为浸润性乳腺癌的早期诊断和判断预后提供帮助。     

SFRP5在白血病细胞中基因甲基化状态及蛋白表达分析

目的检测白血病患者标本及细胞系中分泌型卷曲相关蛋白5(SFRP5)基因启动子区域的甲基化状态及蛋白表达情况。方法甲基化特异性PCR(MSP)检测白血病患者及细胞系中SFRP5基因启动子区甲基化状态,亚硫酸盐测序PCR(BSP)方法检测KG1a细胞中SFRP5基因甲基化状态,Western blot方法检测SFRP5蛋白在白血病患者及细胞系中的表达。结果 12例白血病患者标本中有7例发生了SFRP5基因甲基化,6例正常对照标本均未发生SFRP5基因甲基化。4种白血病细胞系(HL-60、Raji、U937、KG1a)中均发生SFRP5基因甲基化。KG1a细胞中SFRP5基因启动子区-394 bp到+99 bp位点的CpG总甲基化频率为82.5%。白血病患者标本中有7例存在SFRP5蛋白表达,6例正常标本存在SFRP5蛋白表达,4种白血病细胞系中未检测到SFRP5蛋白表达。使用去甲基化试剂DAC处理4种白血病细胞系,结果均恢复SFRP5蛋白表达。结论白血病细胞中存在SFRP5基因启动子区甲基化,并导致SFRP5蛋白表达缺失或下调。     

分泌型卷曲相关蛋白2基因超甲基化与大肠癌的研究

目的:研究分泌型卷曲相关蛋白2(SFRP2)基因启动子超甲基化与大肠癌的关系.方法:用甲基化荧光定量PCR(MethyLight)技术检测44例散发型大肠癌和20例癌旁组织中SFRP2基因的启动子甲基化状况,20例健康志愿者大肠组织作为对照组.同时分析SFRP2基因超甲基化与临床病理特征的关系.结果:44例大肠癌组织中检出SFRP2基因超甲基化36例(36/44,81.8%),20例大肠癌旁组织中检出SFRP2基因超甲基化8例(8/20,40%),20例正常大肠黏膜组织中没有显示SFRP2基因任何甲基化条带.大肠癌中SFRP2基因甲基化较正常黏膜和邻近的正常黏膜更频繁.并且SFRP2基因超甲基化与任何包括性别、年龄、肿瘤分期、位置、组织学分级等临床病理特征之间没有显著的关联.结论:SFRP2基因超甲基化与大肠癌的发生有关,SFRP2基因超甲基化可以作为大肠癌筛检的高潜力标记.     

PTPRO基因启动子甲基化在大肠癌中的表达及作用

目的 :研究大肠癌组织及癌旁正常组织PTPRO基因启动子甲基化状态及m RNA表达情况,并探讨其在大肠癌发生中的关系。方法 :应用甲基化特异性PCR(MSP)和RT-PCR分别检测30例大肠癌组织及癌旁正常组织中PTPRO基因启动子甲基化状态及m RNA表达状态。结果 :大肠癌组织中PTPRO基因启动子甲基化率高于癌旁正常组织,其甲基化样本中PTPRO基因m RNA表达明显受抑。结论 :PTPRO基因启动子甲基化在大肠癌发生中起着重要作用,可能与大肠癌的发生、发展及预后有关。     

胃癌中PTEN基因异常甲基化的检测

目的探讨抑癌基因第10号染色体同源丢失性磷酸酶张力蛋白(PTEN)启动子区域甲基化状况与胃癌的关系。方法采用甲基化特异的PCR(MSP)法检测70例胃癌组织及相应癌旁组织中PTEN启动子区域甲基化状态。结果胃癌组织检测到程度不等的甲基化,其中低分化胃癌甲基化发生率为62.5%,与高中分化胃癌甲基化发生率(20.0%、22.2%)有显著性差异(P<0.05)。并且有淋巴结转移的19例胃癌组织中,有12例PTEN基因启动子甲基化,远高于无淋巴结转移组(P<0.05)。癌旁正常组织未检测到甲基化。结论PTEN基因启动子的甲基化与胃癌的发生、转移有关。PTEN甲基化是胃癌患者诊断及预后的候选标志物之一。     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

Dr.Zhang Ren''''s Experience in the Acupuncture Treatment of Different Diseases with the Same Therapeutic Principle

Dr.Zhang Ren,the chief physician,is the chairman of Shanghai Acupuncture and Moxibustion Association.Having been engaged in medicine for about 40 years,he is experienced in treating various intractable diseases.In his long years of clinical practice,he advocates taking the TCM differentiation as the basis to seek for the acupuncture method for treatment of modern intractable diseases.The author of this essay had the fortune to follow Dr.Zhang in study.The following is a summary of Dr.Zhang's experience in the acupuncture treatment for different intractable diseases with the same therapeutic principle.     

Luo Lingjie''''s Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

猪肺磷脂注射液联合经鼻持续气道正压通气对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性的影响

目的 探讨猪肺磷脂注射液联合经鼻持续气道正压通气(NCPAP)对呼吸衰竭早产儿的临床疗效及肌酸激酶同工酶活性(CK-MB)的影响.方法 选取呼吸衰竭早产儿80例,分为观察组和对照组各40例.对照组采用NCPAP给氧治疗,观察组给予NCPAP给氧联合猪肺磷脂气管内给药.观察两组患儿治疗前及治疗12h、24 h后PaO2、PaCO2、血氧饱和度(SaO2)、pH的变化情况,检测治疗前及治疗5d后血清CK-MB水平;评估两组患儿的临床治疗效果.结果 两组患儿PaO2、PaCO2、SaO2、pH比较,差异均有统计学意义(P＜0.05),其中观察组治疗后的PaO2、SaO2、pH均高于对照组,PaCO2则低于对照组.两组的PaO2、SaO2、pH均随观察时间延长而升高(P＜0.05),PaCO2均随观察时间的延长而降低(P＜0.05).观察组治疗有效率为87.5％,显著高于对照组的70.0％ (P ＜0.05).治疗5d后两组患儿血清CK-MB水平均较前降低(P＜0.05),且观察组明显低于对照组(P＜0.05).结论 猪肺磷脂注射液气管内给药联合NCPAP可以显著降低呼吸衰竭早产儿CK-MB的含量,提高治疗有效率,起到很好的呼吸循环支持作用.     

Survey and practice of reporting quality of randomized controlled clinical trials on traditional Chinese medicine

Evidence obtained from randomized controlled trials （RCTs） has been generally accepted as the gold standard in the evaluation of clinical effectiveness. Readers need to understand the trial design, implementation, results, analysis and interpretation, so as to fully Jnderstand the results of RCTs. Thus, the investigators of RCTs have to report these items in a complete, accurate and clear manner. Since 1998, we have conducted several evaluations on the reporting quality of RCTs published in Chinese journals on traditional Chinese medicine （TCM） and results have shown that there is an urgent need for higher quality RCTs on TCM.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…