拓扑替康对SKOV3细胞Survivin表达的调控

目的 :观察不同浓度拓扑替康 (TPT)对人卵巢癌细胞系SKOV3中Survivin表达的影响。方法 :采用免疫组化和RT PCR方法 ,检测体外不同浓度TPT(0 .2 4 4 μg/L ,3.90 6 μg/L ,6 2 .5 μg/L ,1mg/L ,1 6mg/L ,1 2 8mg/L)作用于SKOV348h后SurvivinmRNA及蛋白的表达。结果 :随TPT浓度的增加 ,SKOV3细胞中SurvivinmRNA及蛋白的表达明显减少 ,呈正性剂量效应关系 (P <0 .0 5 )。结论 :TPT能够抑制卵巢癌细胞SKOV3中SurvivinmRNA和蛋白的表达。     

Survivin反义核酸对SKOV3细胞生长及Survivin基因表达的影响

目的 :观察Survivin反义核酸对人卵巢癌细胞系SKOV3的生长及Survivin基因表达的影响。方法 :应用基因重组技术 ,将在真核细胞中能稳定表达反义Survivin的pcDNA3 SVVas经脂质体LipofectamineTM2 0 0 0 介导转染人卵巢癌细胞株SKOV3,经G4 1 8筛选得到抗性克隆 (SKOV3/SVVas) ,同时以空载体pcDNA3转染SKOV3作为对照(SKOV3/neo) ;绘制细胞生长曲线 ;采用免疫组化、RT PCR和流式细胞仪检测SKOV3、SKOV3/neo及SKOV3/SVVas细胞的内源性SurvivinmRNA及蛋白的表达和凋亡细胞。结果 :与SKOV3及SKOV3/neo细胞比较 ,SKOV3/SVVas细胞增殖和代谢能力均明显降低 ,Survivin蛋白阳性表达率及mRNA相对表达量明显降低 (P <0 .0 1 ) ,细胞凋亡率显著增加 (P <0 .0 1 )。结论 :稳定表达的反义Survivin能够有效抑制SKOV3细胞内源性Survivin蛋白的表达 ,诱导SKOV3细胞凋亡。     

拓扑特肯诱导人口腔上皮癌细胞凋亡的机制

目的 :研究拓扑特肯 (Topotecan ,TPT)诱导体外培养的人口腔上皮癌细胞 (KB)凋亡的作用及其可能机制 .方法 :体外培养KB细胞 ,加 30mg/L的TPT孵育 1 2 ,2 4和4 8h ,用MTT法检测TPT对KB细胞增殖的作用 ;DNA凝胶电泳和流式细胞仪技术检测TPT诱导KB细胞凋亡 ,West ern blot检测 p p38MAPK的表达 .结果 :TPT处理细胞 1 2 ,2 4和 4 8h后 ,KB细胞的抑制率分别为 (2 4± 9) % ,(34±7) %和 (4 5± 1 0 ) % ,各组间有显著性差异 (P <0 .0 5 ) ;流式细胞仪检测其凋亡率 ,1 2h时 (1 1 .5± 2 .8) % ,2 4h(31 .2± 4 .1 ) % ,各组间有显著性差异 (P <0 .0 1 ) ;DNA凝胶电泳可见TPT作用 1 2h组DNA碎片化 ,是典型的细胞凋亡生化指标 ;TPT处理细胞 1 2 ,2 4和 4 8h后 ,KB细胞的 p p38MAPK表达逐渐升高 (n =3,P <0 .0 5 ) .结论 :TPT可通过p p38MAPK开放表达信号通路诱导体外培养的TPT处理KB细胞凋亡 .     

高密度脂蛋白对氧化型低密度脂蛋白诱导内皮细胞凋亡的影响

目的　探讨高密度脂蛋白 (HDL)对氧化型低密度脂蛋白 (ox L DL)诱导体外培养的人血管内皮细胞凋亡的影响及相关机制。方法　 ox L DL 单独或与 HDL 共同处理体外培养的人脐静脉内皮细胞株 (ECV- 30 4 )后 ,通过流式细胞仪、DNA电泳检测细胞凋亡并测定 Caspase- 3酶活性。结果　 10 0 μg/ml和 2 0 0 μg/m l浓度 ox L DL 作用内皮细胞后 ,其细胞凋亡率分别为 2 8.4 0± 5 .30 %、34.72± 4 .6 4 % ,DNA电泳呈典型的梯状图谱 ,Caspase- 3酶活性达到 16 6 .0 1± 16 .4 4、2 6 3.74± 4 6 .6 2 pmd/(m in· mg protein) ,与空白组比较均有显著性差异 (P<0 .0 1)。HDL(2 0 0 μg/ml)与 ox L DL(10 0 μg/ml、2 0 0 μg/m l)共同作用后 ,凋亡率降至 8.0 6± 2 .35 %及 9.4 0± 2 .5 8% ,未出现梯状图谱 ,Caspase- 3酶活性减低 (分别为 6 7.73± 14 .83、111.2 6± 2 7.13min· m g protein) ,与对应的 ox L DL 组比较均差异显著 (P<0 .0 1)。结论　 HDL 能减少 ox L DL 所致体外培养的内皮细胞凋亡 ,这一作用可能与降低Caspase- 3酶活性有关     

Survivin反义核酸与顺铂联合作用诱导人卵巢癌细胞凋亡的实验研究

目的探讨特异性封闭Survivin的表达与顺铂联合作用对卵巢癌细胞的凋亡诱导作用,以期为卵巢癌的治疗提供实验依据.方法将已成功构建的Survivin反义核酸真核表达载体的重组体导入人卵巢癌细胞株中,用G418筛选得到表达反义Survivin的细胞,RT-PCR技术检测转染细胞Survivin表达的变化;采用Hoechest核染色分析与顺铂联合作用时人卵巢癌细胞的凋亡情况.结果构建的Survivin反义RNA真核表达载体能有效的抑制卵巢癌细胞中Survivin基因的表达;顺铂诱导转染Survivin反义核酸的卵巢癌细胞的凋亡作用显著强于未转染Survivin反义核酸的卵巢癌细胞株.结论Survivin反义核酸可明显增强顺铂诱导卵巢癌细胞凋亡,为其联合应用卵巢癌治疗研究提供了实验依据.     

Survivin反义核酸诱导卵巢癌细胞凋亡及逆转多西他赛耐药机制的实验研究

目的:构建Survivin反义真核表达载体(anti-pcDNA3-svv),探讨其对卵巢癌的凋亡诱导作用、对多西他赛的化疗增敏作用及逆转耐药的机制. 方法:采用Survivin反义核酸瞬时电转染法转染卵巢癌细胞系Skov3, 筛选出阳性细胞株. 以Western blot检测Survivin蛋白的表达,用流式细胞仪检测其对Skov3的凋亡诱导作用,采用MTT法检测其对多西他赛的化疗增敏作用,并检测实验组细胞(Skov3-SVVanti)MDR-1 mRNA的表达. 结果:稳定表达anti-pcDNA3-svv的Skov3-SVVanti其Survivin蛋白表达比未转染者明显降低,Skov3-SVVanti组细胞流式细胞仪检测显示其凋亡率为19%,对多西他赛的IC50值为(13.3±2.25)ng/mL,而对照组(Skov3)为(53.2±2.45) ng/mL,差异具有明显的统计学意义(P＜0.01). Skov3-SVVanti组MDR-1 mRNA表达较Skov3组明显减少(P＜0.01). 结论:Survivin反义核酸可诱导卵巢癌细胞凋亡,并通过降低MDR-1 mRNA表达增强多西他赛化疗敏感性.     

Survivin反义核酸增强PANC-1细胞对阿霉素的敏感性

目的:探讨surv iv in反义核酸对阿霉素诱导胰腺癌细胞系PANC-1细胞凋亡的影响。方法:将已构建成功的surv iv in反义核酸真核表达载体pcDNA 3-SVV as电转染胰腺癌细胞系PANC-1,并筛选转染成功的阳性克隆;台盼蓝拒染法观察surv iv in反义核酸与阿霉素联合应用对PANC-1细胞生存的影响;细胞计数和M TT试验测定转染细胞对阿霉素敏感性;琼脂糖凝胶电泳分析细胞凋亡DNA断裂情况。结果:转染surv iv in反义核酸的PANC-1/SVV as细胞增殖明显受抑,与PANC-1/neo细胞、PANC-1细胞进行比较,具有显著性差异(P<0.05);M TT实验显示,阿霉素对PANC-1/SVV as、PANC-1/neo、PANC-1细胞的IC50值分别为0.285±0.012μm o l/L、1.528±0.317μm o l/L和1.540±0.253μm o l/L。统计分析证明差异具有显著性(P<0.01);经琼脂糖凝胶电泳,PANC-1/SVV as细胞可见到DNA梯形条带,而PANC-1/neo、PANC-1细胞未见到。结论:surv iv in反义核酸可促进阿霉素诱导PANC-1细胞凋亡,为胰腺癌的基因治疗研究提供了实验依据。     

bcl-2硫代反义寡核苷酸增强膀胱癌细胞对顺铂的敏感性

目的　研究凋亡抑制基因bcl 2硫代反义寡核苷酸 (S ODN)转染T2 4细胞后对顺铂药物敏感性影响。方法　将培养细胞分为 6组 :反义S ODN组 ,正义S ODN组 ,反义S ODN +顺铂组 ,正义S ODN +顺铂组 ,顺铂组和对照组。应用脂质体法介导bcl 2正义、反义S ODN转染T2 4细胞。通过免疫细胞化学方法观察细胞内BCL 2的蛋白表达 ,RT PCR方法检测细胞内bcl 2mR NA的相对表达量 ,MTT法测经顺铂 (cis platinum)处理的各组细胞的生成率 ,流式细胞仪 (FCM)检测细胞凋亡率。结果　bcl 2反义S ODN处理过的T2 4细胞中BCL 2蛋白和bcl 2mRNA表达明显下降。顺铂对反义S ODN组细胞的半抑制浓度 (IC50 )为 (2 .2 5± 0 .0 9) μg/ml显著低于正义S ODN组 (5 .83± 0 .15 ) μg/ml和对照组 (6 .11± 0 .2 1) μg/ml(P <0 .0 1)。顺铂处理反义S ODN组细胞的凋亡率显著高于其它组。结论　bcl 2反义S ODN能显著抑制T2 4细胞中BCL 2蛋白的表达并增强T2 4细胞对顺铂的药物敏感性     

WT1反义核酸诱导卵巢癌细胞凋亡的实验研究

[目的]研究WT1反义寡核苷酸转染对卵巢癌SKOV3细胞增殖和凋亡的影响。[方法]实验分4组:正常对照组(加入转染液)、反义组(脂质体+反义寡合苷酸转染)、正义组(脂质体+正义寡合苷酸转染)和脂质体组(只加入脂质体)。分组转染卵巢癌SKOV3细胞株后,流式细胞仪检测细胞凋亡和细胞周期,MTT法检测细胞的增殖活性,RT-PCR检测WT1 mRNA表达水平,Western blot检测其蛋白表达水平。[结果]脂质体介导的WT1反义寡核苷酸转染明显抑制卵巢癌SKOV3细胞增殖,抑制率为49.48%,G0-G1期细胞分布率增加达(79.10±2.79)%,凋亡细胞群明显增多,凋亡率为(13.18±2.00)%,同时转染后细胞WT1 mRNA及蛋白表达水平下降,与对照组及其他各组相比较差异均有显著性意义(P<0.05)。[结论]WT1反义核酸能抑制卵巢癌细胞增殖,诱导细胞凋亡。WT1反义核酸用于卵巢癌的基因治疗具有一定的潜在意义。     

反义IGF-IR基因片段诱导胶质瘤细胞凋亡的流式细胞术分析

目的　利用流式细胞仪 (flowcytometry ,FCM)探讨反义IGF IR基因片段诱导胶质瘤细胞凋亡的作用。方法　根据IGF IRcDNA序列设计其正义、反义基因片段 ,并对部分碱基进行硫代磷酸修饰。实验分为空白对照组、正义核酸组和反义核酸组 ,应用流式细胞技术检测DNA含量 ,根据DNA直方图分析凋亡细胞情况。应用透射电镜观察了凋亡细胞的形态学变化。结果　经反义寡核苷酸 5、10、15、2 0μmol·L-1处理的胶质瘤细胞其凋亡率分别为 16 0 6 %±3 86 %、2 4 5 2 %± 4 84%、36 6 9%± 5 5 3%和 43 85 %±5 72 % ,而用正义寡核苷酸 5、10、15、2 0 μmol·L-1处理的胶质瘤细胞其凋亡率分别为 3 76 %± 1 2 2 %、3 14%±1 15 %、2 5 1%± 0 93%和 3 2 6 %± 1 15 % ,空白对照组(野生型 )自然凋亡率为 1 0 1%± 0 89%。反义核酸组与对照组相比有显著性差异 (P <0 0 5 ) ,而正义核酸组与空白对照组无明显差异 (P >0 0 5 )。凋亡细胞形态上表现为细胞体积缩小 ,染色质凝聚 ,并聚集于核膜下成新月状或块状 ,胞膜内馅形成膜包裹的核碎片或细胞器 ,最后出泡形成凋亡小体。结论　反义IGF IR基因片段诱导胶质瘤细胞凋亡是其抑制细胞增殖机制之一。通过FCM分析可较准确地判定肿瘤细胞凋亡情况     

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.