TRAIL诱导人肝星状细胞系LX-2凋亡及DR5与Bax调节作用

目的 探讨肿瘤坏死因子相关凋亡诱导配体(TRAIL)诱导肝星状细胞凋亡情况及DR5与Bax的调控作用.方法 RT-PCR检测LX-2中α-SMAmRNA和DR5mRNA的表达;MTT比色法、流式细胞术检测外源性TRAIL对LX-2细胞增殖和诱导细胞凋亡的影响;采用Western blot检测Bax、Caspase-3表达.结果 培养的LX-2表达αSMA mRNA和DR5mRNA逐渐增加,TRAIL可抑制其细胞增殖.TRAIL与对照组比较可以诱导活化的LX-2细胞凋亡明显增加(P<0.05),在TRAIL作用下,LX-2线粒体Bax、细胞浆Caspase-3表达上调.结论 外源性TRAIL可以诱导活化的LX-2凋亡,DR5及线粒体Bax表达上调与此过程密切相关.     

5-Aza-2'-dC通过上调DR4与DR5表达增加TRAIL诱导乳腺癌细胞凋亡的敏感性

目的 探讨5-Aza-2'-dC增加肿瘤坏死因子相关凋亡诱导配体(TRAIL)诱导乳腺癌细胞凋亡敏感性的作用及其可能机制.方法 5 μmol/L 5-Aza-2'-dC顸处理细胞96 h,TRAIL(0,50,100,200 ng/mL)处理细胞12h,MTT检测细胞增殖抑制率,Annexin V-FITC/PI法检测细胞凋亡,流式细胞技术检测TRAIL受体DR4及DR5的表达,Western blot检测caspase-8蛋白表达水平,Real-time PCR检测细胞DR4、DR5和caspase-8 mRNA表达.结果 5-Aza-2'-dC预处理组与对照组相比,TRAIL对细胞增殖抑制率和诱导凋亡率明显高于对照组(P＜0.05).5-Aza-2'-dC能增加细胞表面DR4和DR5表达,促进凋亡通路关键蛋白caspase-8活化.5-Aza-2'-dC在mRNA水平增加了DR4、DR5和caspase-8的表达.结论 5-Aza-2'-dC增加了TRAIL诱导乳腺癌细胞凋亡的敏感性,其可能机制是通过上调DR4、DR5和caspase-8表达实现.     

PIG11高表达诱导HepG2细胞凋亡及其机制的初步探讨

目的利用已建立的稳定高表达PIG11蛋白的HepG2细胞株,探讨PIG11蛋白表达对HepG2细胞凋亡的影响,以及线粒体膜电位改变和Cyt C释放在凋亡过程中的作用。阐明PIG11诱导细胞凋亡的分子机制。方法 PI染色,流式检测细胞的凋亡情况。用Rh123标记,流式测定线粒体膜电位。Western Blot检测胞浆和线粒体中Cyt C的含量变化。结果流式细胞仪检测Rh123荧光强度,结果显示：pLXSN-PIG11-HepG2细胞荧光强度（5.4±0.15）低于HepG2细胞（14.7±0.56）和pLXSN-HepG2细胞（13.2±0.53）（P〈0.01）。表明PIG11高表达诱导细胞凋亡过程中存在线粒体膜电位去极化。用CsA（10μmol/L）抑制各组细胞的线粒体通透性转移孔后,流式凋亡检测结果显示pLXSN-PIG11-HepG2细胞凋亡率明显降低。Western Blot检测发现存在线粒体Cyt C向胞浆释放。结论 PIG11高表达可诱导HepG2细胞凋亡,PIG11诱导细胞凋亡机制可能由线粒体膜电位改变及Cyt C向胞浆释放而介导。     

DR5上调在5，7-二甲氧基黄酮增敏TRAIL诱导肝癌细胞凋亡中的作用

目的 研究5,7-二甲氧基黄酮(5,7-DMF)是否能增强人肝癌细胞对肿瘤坏死因子相关凋亡诱导配体(TRAIL)介导细胞凋亡的敏感性及其作用机制.方法 体外培养人肝癌Hep 3B细胞.MTT法测定细胞毒性;碘化丙啶(PI)染色流式细胞术(FCM)和DNA琼脂糖凝胶电泳检测细胞凋亡;免疫酶联吸附法测定caspase-3和caspase-8的活性.Western blot 分析DR4和DR5表达.结果 5,7-DMF能增强Hep 3B细胞对TRAIL诱导凋亡的敏感性和诱导DR5表达.5,7-DMF与TRAIL合用诱导Hep 3B细胞凋亡依赖于caspase-3和caspase-8活化.DR5特异拮抗性嵌合抗体减弱5,7-DMF增强TRAIL诱导Hep 3B细胞凋亡作用.结论 5,7-DMF通过上调DR5增强TRAIL诱导人肝癌细胞凋亡.     

TRAIL诱导胃癌细胞凋亡的实验研究

目的研究TRAIL对胃癌细胞株MKN28细胞体外诱导凋亡的作用及机制,并研究此过程中Caspase-3的表达规律及与凋亡效应的相关性。方法培养细胞,MTT法分析细胞增殖抑制率及细胞存活率,流式细胞仪分析细胞凋亡及细胞周期,细胞免疫组化检测细胞Caspase-3的表达水平,AO/EB染色观察凋亡细胞。结果 TRAIL可明显抑制MKN28细胞的增殖,并可诱导细胞的凋亡。细胞阻滞于G0/G1期,Caspase-3在MKN28细胞中低表达,经TRAIL处理细胞后高表达。AO/EB染色后可见典型细胞凋亡特征。结论 TRAIL可诱导MKN28细胞株的凋亡,并呈剂量依赖性。TRAIL通过上调Caspase-3的表达,阻滞细胞周期,诱导MKN28细胞的凋亡。     

重组人可溶性TRAIL分子诱导细胞凋亡机理探讨

目的探讨重组人可溶性TRAIL蛋白(rhsTRAIL)诱导细胞凋亡的机理.方法应用DNA染料和流式细胞仪定性分别检测rhsTRAIL诱导的细胞凋亡;流式细胞仪检测靶细胞膜表面TRAIL受体表达格局,荧光定量法检测凋亡细胞中Caspase-3活性.结果100ng/ml人可溶性TRAIL蛋白分子对外周血淋巴细胞无明显毒性,但可诱导肿瘤细胞凋亡,不同的肿瘤细胞凋亡率有差异,凋亡范围在26%～57%.不同细胞表面TRAIL受体表达量不同,外周血淋巴细胞的死亡受体DR4、DR5受体表达5%,而诱骗受体DcRl表达55%,相反肿瘤细胞上的DR4、DR5表达高(40%～88%),而DcRl表达很低(8%～17%).rhsTRAIL诱导HL-60细胞发生凋亡,其细胞内Caspase-3活性增高.ActD可增加TRAIL抑制细胞生长活性.结论重组人可溶性TRAIL蛋白分子可诱导肿瘤细胞凋亡,凋亡活性TRAIL受体类型及Caspase-3活性增高有关.     

衣霉素增强胃腺癌细胞对TRAIL诱导凋亡的敏感性

目的探讨衣霉素对TRAIL(TNF-related apoptosis-in-ducing ligand)诱导的胃腺癌细胞的凋亡的作用。方法PI染色流式细胞仪检测衣霉素与TRAIL作用于细胞前后细胞凋亡率的变化;双抗体流式细胞仪检测药物作用前后细胞表面TRAIL受体表达情况;W estern b lot检测药物作用前后caspase蛋白水平的变化;JC-1染色流式细胞仪检测药物作用前后线粒体膜电位的变化。结果衣霉素可明显增加TRAIL诱导的胃腺癌细胞凋亡率;衣霉素作用于胃腺癌细胞后,细胞表面TRAIL-R2表达明显增高;衣霉素促进TRAIL诱导的胃腺癌细胞caspase-3、PARP活化和线粒体膜电位减少。结论衣霉素可通过上调细胞表面TRAIL受体表达来增强胃腺癌细胞对TRAIL诱导的凋亡的敏感性,这种致敏性与激活caspase级联反应和线粒体膜电位减少有关。     

白花蛇舌草对人B淋巴细胞瘤Ramos细胞增殖和凋亡的影响

目的探讨白花蛇舌草对Ramos细胞增殖和凋亡的影响。方法使用0、10、20、40 m L·L-1白花蛇舌草处理Ramos细胞24 h后收获细胞;采用细胞增殖检测试剂盒检测白花蛇舌草对Ramos细胞增殖的影响,并检测Ramos细胞线粒体膜电位的变化;流式细胞术检测白花蛇舌草对Ramos细胞凋亡的影响,并检测Ramos细胞中caspase-3、caspase-9活性的变化;Western blot法检测Ramos细胞Bax、Bcl-2蛋白的表达。结果细胞增殖实验结果证明白花蛇舌草处理的Ramos细胞增殖受到明显抑制;20、40 m L·L-1白花蛇舌草干预Ramos细胞24 h后,Ramos细胞线粒体膜电位低于0 m L·L-1(P<0.05,P<0.01);流式细胞术检测结果表明细胞凋亡增加;与0 m L·L-1白花蛇舌草比较,20 m L·L-1白花蛇舌草处理Ramos细胞24 h,caspase-3和caspase-9活性增加了96%和37%(P<0.05),40 m L·L-1白花蛇舌草处理Ramos细胞24 h,caspase-3和caspase-9活性增加了148%和115%(P<0.01)。Western blot法证实Bax蛋白表达量增强,而Bcl-2蛋白表达量减弱,且呈现一定程度的剂量依赖性。结论白花蛇舌草可通过活化调控胱天蛋白依赖的线粒体途径,诱导Ramos细胞凋亡。     

重组人可溶性TRAIL分子诱导细胞凋亡机理探讨

目的 探讨重组人可溶性TRAIL蛋白（rhsTRAIL）诱导细胞凋亡的机理。方法 应用DNA染料和流式细胞仪定性分别检测rhsTRAIL诱导的细胞凋亡；流式细胞仪检测靶细胞膜表面TRAIL受体表达格局，荧光定量法检测凋亡细胞中Caspase-3活性。结果 100ng/ml人可溶性TRAIL蛋白分子对外周血淋巴细胞无明显毒性，但可诱导肿瘤细胞凋亡，不同的肿瘤细胞凋亡率有差异。凋亡范围在26%-57%。不同细胞表面TRAIL受体表达量不同，外周血淋巴细胞的死亡受体DR4，DR5受体表达5%，而诱骗受体DcR1表达55%，相反肿瘤细胞上的DR4，DR5表达高（40%——88%）。而DcR1表达很低（8%-17%），rhsTRAIL诱导HL-60细胞发生凋亡，其细胞内Caspase-3活性增高，ActD可增加TRAIL抑制细胞生长活性。结论 重组人可溶性TRAIL蛋白分子可诱导肿瘤细胞凋亡，凋亡活性TRAIL受体类型及Caspase-3活性增高有关。     

TRAIL诱导结肠癌SW480细胞的凋亡

目的探讨TRAIL对结肠癌SW480细胞凋亡的影响。方法实验分rmhTRAIL处理组和阴性对照组。MTT法检测细胞增殖活性,流式细胞术检测细胞凋亡情况,Western Blot检测Bcl-2、Bax蛋白表达变化。结果 TRAIL能明显呈浓度依赖性地抑制结肠癌SW480细胞增殖（P〈0.05）,SW480细胞经rmhTRAIL处理后,流式细胞术分析显示其凋亡率明显上升（P〈0.01）,Western Blot检测Bcl-2、Bax蛋白表达情况,显示Bcl-2蛋白表达明显下降,而Bax蛋白的表达明显升高（P〈0.05）。结论 TRAIL可以诱导结肠癌细胞的凋亡,其机制可能与下调Bcl-2蛋白表达、上调Bax蛋白表达有关。     

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.