NKD1调控Wnt/β-catenin信号通路影响结直肠肿瘤细胞周期的机制研究

目的 探讨NKD1调控Wnt/β-catenin信号通路影响结直肠肿瘤细胞周期的作用机制。方法 利用免疫组化和RT-PCR方法，检测NKD1在结直肠肿瘤癌组织和癌旁组织中的表达。选择人结直肠癌细胞SW620和HT29,分别转染NKD1干扰(NKD1 siRNA)慢病毒载体，RT-PCR和Western blot检测转染效果；定量蛋白质组学联合生信分析筛选NKD1富集的生物学功能及信号通路；CCK8、平板克隆实验检测NKD1对细胞增殖能力的影响；RT-PCR和Western blot检测NKD1对细胞周期标志物表达的影响；Western blot检测Wnt/β-catenin信号通路核心分子的蛋白表达。结果 NKD1在结直肠癌组织中表达高于癌旁组织(P<0.05);下调NKD1导致SW620和HT29细胞中NKD1 mRNA和蛋白表达水平均降低(P<0.05);定量蛋白质组学联合生信分析显示，下调NKD1差异蛋白主要富集细胞增殖和细胞周期生物过程，且显著富集细胞周期信号通路；相比对照组(Control组和NC组),siNKD1组SW620和HT29细胞增殖能力明显下降(P&l...     

Lnc-CRCMSL在结直肠癌中的表达及对癌细胞生长的影响

目的探讨长链非编码RNA-CRCMSL(Lnc-CRCMSL)在结直肠癌组织和癌细胞中的表达及对癌细胞生长的影响。方法采用实时定量PCR(qRT-PCR)检测Lnc-CRCMSL在结肠癌组织和癌旁正常组织、正常结肠上皮细胞及结直肠癌细胞中的表达特点。建立SW480耐药株SW480/DDP,并通过基因干扰实验过表达其Lnc-CRCMSL水平,采用流式细胞术测定细胞的凋亡率,CCK-8测定细胞的增殖活力,划痕愈合实验测定细胞的迁移能力,Transwell测定细胞的侵袭能力,免疫蛋白印迹实验测定基质金属蛋白酶2(MMP2)和基质金属蛋白酶9(MMP9)的蛋白表达。结果Lnc-CRCMSL在结直肠癌组织的表达低于癌旁正常组织,在Ⅱ期、Ⅲ期结直肠癌组织中的表达低于Ⅰ期,且在结直肠癌细胞中的表达量低于正常结肠上皮细胞(P＜0.05)。过表达Lnc-CRCMSL提高了SW480/DDP的凋亡率,抑制了SW480/DDP的增殖、迁移和侵袭活力(P＜0.05)。同时,过表达Lnc-CRCMSL降低了SW480/DDP的MMP2和MMP9表达水平(P＜0.05)。结论Lnc-CRCMSL在结直肠癌中表达异常,对结直肠癌细胞的增殖、凋亡、迁移及侵袭行为具有调控作用。     

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.     

Notch1在结直肠癌的表达与奥沙利铂敏感性的关系

目的：明确Notch1在结直肠癌中的表达状况,探讨Notch1表达水平与奥沙利铂对结直肠癌化疗敏感性的关系.方法：收集36例结直肠癌新鲜手术标本进行原代细胞培养,采用胶原凝胶体的方法检测奥沙利铂敏感性.免疫化学染色检测结直肠癌组织、结直肠组织和结肠癌细胞株（SW480）Notch1的表达水平.将经二甲基亚砜（DMSO）、DAPI处理后的SW480细胞分4组（DMSO、DAPI、DMSO＋oxaliplatin、DAPT＋oxaliplatin）,分别用奥沙利铂作用后CD-DST检测各组吸光度值.结果：Notch1在结直肠癌组织上呈阳性表达,表达水平明显高于正常组织,与奥沙利铂敏感性呈负相关.Notch1在SW480细胞呈阳性表达,与DMSO组相比,DAPT组之间的差异无统计学意义;而DMSO＋oxaliplatin组及DAPT＋oxaliplatin组之间的差异具有统计学意义（P＜0.05）.结论：Notch1在结直肠癌中呈高表达,且表达水平与奥沙利铂的敏感性呈负相关.DAPT阻断Notch1信号通路可提高细胞奥沙利铂的敏感性.     

NRAGE对结直肠癌细胞增殖和侵袭能力的作用机制

目的 研究神经营养蛋白受体相互作用的同源物(NRAGE)对结直肠癌(CRC)细胞增殖和侵袭能力的作用机制。方法 选取84例CRC患者的临床病理材料,应用荧光定量PCR(qPCR)及免疫印迹实验检测CRC组织及癌旁正常组织中NRAGE的表达,分析癌组织中NRAGE的表达与临床病理特征的关系。RT-PCR及免疫印迹实验检测CRC肿瘤细胞系HT29、SW480、SW620、LOVO及结直肠正常细胞系FHC中NRAGE mRNA及蛋白表达。MTT实验、Transwell迁移实验观察NC组、过表达NRAGE组及NRAGE敲低组肿瘤细胞增殖及迁移能力。qPCR及免疫印迹实验检测各组AKT、p-AKT、ERK1/2、p-ERK1/2、E-cadherin、N-cadherin、Vimentin的表达差异。结果 与癌旁组织相比,CRC癌组织中NRAGE的mRNA及蛋白表达明显升高。癌组织中NRAGE的表达与肿瘤分期、远处转移及淋巴结转移有关(P<0.05)。与FHC细胞相比,CRC肿瘤细胞系HT29、SW480、SW620、LOVO细胞中NRAGE的mRNA及蛋白表达较高(P<0.05)。...     

沉默p53凋亡刺激蛋白抑制因子抑制结直肠癌细胞的增殖

目的探索p53凋亡刺激蛋白抑制因子(iASPP)在结直肠癌组织/细胞中的表达及iASPP沉默后对结直肠癌细胞增殖的影响。方法该研究首先检测临床样本结直肠癌组织和癌旁正常组织中iASPP mRNA的表达差异、结直肠癌细胞系和正常结肠上皮细胞系(HCoEpiC)mRNA和蛋白质iASPP表达差异;然后在人结肠癌细胞SW480中转染iASPPsiRNA,用实时荧光定量聚合酶链反应(RT-qPCR)检测iASPP mRNA表达效率,用免疫印迹试验(Western blot)检测iASPP的蛋白表达水平;最后用MTT法和Brd U法检测沉默iASPP对SW480细胞增殖的影响。结果结直肠癌组织中,iASPP mRNA表达相比癌旁正常组织上调;结直肠癌细胞LoVo、SW620和SW480中iASPP mRNA和蛋白质表达相比正常结肠上皮细胞系(HCoEpiC)均上调;在SW480细胞中转染iASPP-siRNA可下调iASPP的表达;沉默iASPP可抑制结直肠癌细胞的增殖。结论沉默iASPP基因抑制结直肠癌细胞的增殖。     

m iR －503在结直肠癌组织细胞中的表达及其对增殖和诱导细胞凋亡的影响

目的：探讨miR－503在结直肠癌中的表达与功能。方法通过实时定量聚合酶链反应检测结直肠癌组织、癌旁组织及细胞系（ CaCo2、SW480、HCT－116、HT29、SW620）中miR－503的表达水平。用MTT比色法评估细胞增殖情况,用流式细胞仪检测细胞凋亡及周期分布情况。结果与癌旁组织相比,miR－503在结直肠癌组织及细胞系中表达显著降低（P＜0.05）。 miR－503在结直肠癌细胞中的过表达明显抑制细胞增殖及诱导细胞凋亡（P＜0.05）。结论 miR－503在结直肠癌组织及细胞系中的表达明显降低。此外,miR－503对结直肠癌细胞起到抑制增殖、诱导凋亡的作用。     

缬沙坦对糖尿病小鼠肾小球组织Notch通路活化及足细胞丢失的影响

目的探讨应用缬沙坦对糖尿病小鼠肾小球组织中Notch通路活化及足细胞丢失的影响。方法建立糖尿病小鼠模型给予缬沙坦治疗,观察小鼠肾小球细胞凋亡及足细胞脱落情况,采用Western blot检测Notch胞内域1(Notch intracellular domain 1,NICD1)、Hesl、Heyl、Bax、Bcl-2、cleaved caspase-3蛋白表达情况,Real-time PCR检测Hesl和Heyl mRNA表达情况。结果缬沙坦可降低糖尿病小鼠肾小球细胞凋亡及足细胞脱落,减少糖尿病小鼠肾小球组织中NICDl、Hesl、Heyl、Bax、cleaved caspase-3的表达,增加Bcl-2表达(P<0.05)。结论缬沙坦可通过抑制糖尿病小鼠肾小球组织中Notch通路的活化,减少足细胞凋亡和脱落。     

消癌解毒方对结直肠癌细胞增殖的抑制作用及其机制研究

【目的】探讨消癌解毒方对结直肠癌细胞增殖的影响及作用机制。【方法】采用细胞计数试剂盒8(CCK-8)观察消癌解毒方含药血清对结直肠癌细胞HT-29、HCT-116、LoVo增殖的影响,采用流式细胞仪观察HCT-116细胞周期分布变化,采用蛋白免疫印迹(Western Blot)法检测HCT-116细胞周期相关蛋白CyclinA2、CyclinB1、CDK1、P21、P27及Notch1/Hes1信号途径相关蛋白Notch1、Hes1的表达。【结果】消癌解毒方含药血清可显著抑制结肠癌细胞HCT-116的增殖,明显改变HCT-116细胞形态,并将细胞周期阻滞于G2/M期,影响周期相关蛋白的表达,抑制Notch1/Hes1信号通路。【结论】消癌解毒方具有抑制结肠癌细胞增殖的作用,其机制可能与阻滞结直肠癌细胞周期,抑制Notch1/Hes1信号通路有关。     

ATBF1在结直肠癌中的表达及其与转移相关性研究

目的 探讨ATBF1在结直肠癌中的表达,分析其与结直肠癌转移相关性.方法 通过激光共聚焦检测ATBF1蛋白在转移性较强的LOVO细胞株及转移性相对较弱的SW480中的表达情况.同时用采用免疫组织化学方法检测146例结直肠癌和癌旁组织中ATBF1的表达,分析ATBF1蛋白在转移和非转移组中的表达情况.结果 LOVO细胞株中的ATBF1蛋白表达量明显低于SW480细胞株中ATBF1蛋白表达量.癌组织中的ATBF1的阳性率为52.16％明显低于癌旁组织中的ATBF1阳性表达率82.88％.转移组中ATBF1蛋白表达率为50％,而非转移组中ATBF1蛋白表达率为67.86％.结论 ATBF1在结直肠癌组织中呈低表达,表现为抑癌基因,与结直肠癌的转移相关.     

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…     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

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.