金雀异黄素增加5-氟尿嘧啶对胃癌SGC-7901细胞疗效的体外研究

目的:研究金雀异黄素(genistein,Gen)是否影响5-氟尿嘧啶(5-fluorouracil,5-FU)对胃癌细胞SGC-7901的抗癌活性.方法:Gen、5-FU单独及两者联合处理胃癌SGC-7901细胞24、48及72 h后,采用MTT法测定癌细胞的活性;Gen、5-FU单独、联合处理胃癌SGC-7901细胞72 h后,透射电镜观察细胞超微结构改变,免疫细胞化学法研究凋亡相关基因的蛋白mt P53、Bcl-2和Bax的表达变化.结果:6 μmol/L Gen和10 μmol/L 5-FU联合应用比20 μmol/L Gen、10μmol/L 5-FU单独应用时对胃癌细胞的生长抑制更为显著(P＜0.01);Gen、5-FU单独及联合应用均可诱导SGC-7901细胞凋亡;Gen、5-FU联合时对SGC-7901细胞的凋亡相关蛋白Bax表达上调和mt P53、Bcl-2表达下调的作用较单独时明显(P＜0.05～0.01).结论:金雀异黄素能够增强5-FU对SGC-7901细胞的抗癌活性,可能与其调节细胞生存和凋亡的关键蛋白mt P53、Bcl-2和Bax的表达有关.金雀异黄素与5-FU联合应用可能改善胃癌化疗的结局,但这一方案的效果需要适当的临床试验来验证.     

白藜芦醇联合化疗药物抑制胃癌SGC-7901细胞增殖作用研究

目的分别探讨白藜芦醇(Res)联合5-氟尿嘧啶(5-FU)在体外对胃癌SGC-7901细胞增殖和凋亡的作用及其机制,为将来临床上以Res基础的联合用药提供理论和实验依据。方法分别采用不同浓度的5-FU单独或与半抑制浓度(IC50)的Res联合处理SGC-7901细胞24、487、2 h后,采用3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐(MTT)法检测细胞增殖抑制率,计算5-FU单独或与Res联合处理对SGC-7901细胞增殖抑制的中效浓度,以检测二者有无联合增效作用;以MTT法检测细胞增殖抑制率;以流式细胞仪(FCM)检测细胞凋亡率;原位末端标记(TUNEL)法检测细胞凋亡等,观察联合应用对肿瘤细胞的抑制作用。结果 MTT法显示:5-FU单独作用于SGC-7901细胞,其IC5011.44μg/mL,而与150μmoL/L Res联合作用时,则IC506.65μg/mL,说明两种药物联合应用有协同增效作用;FCM结果显示:5-FU分别与Res联合应用,其凋亡率15.68%,与5-FU单独应用相比(11.60%),差异有统计学意义(P<0.05);TUNEL法显示:联合应用与单独应用相比,细胞核明显棕黄色深染,且阳性染色细胞数目明显增多,表明5-FU与Res联合作用,凋亡细胞明显增加。结论 Res联合5-FU可显著抑制肿瘤细胞增殖和促进肿瘤细胞凋亡,说明Res与5-FU具有协同作用。     

小檗胺联合热疗对人胃癌顺铂耐药细胞增殖的影响

目的 研究小檗胺联合热疗对人胃癌顺铂耐药细胞(SGC-7901/DPP)的增殖作用及机制。方法 SGC-7901/DPP细胞的增殖利用四甲基偶氮唑盐（MTT）法检测,SGC-7901/DPP细胞生长利用细胞集落试验检测, SGC-7901/DPP细胞凋亡率利用流式细胞仪检测, 蛋白的表达水平利用蛋白印迹（Western blot）检测。结果 小檗胺 (0～64 mg/L) 对SGC-7901/DPP细胞的增殖抑制作用呈浓度依赖性 (P<0.05)。与单独热疗组或者单独小檗胺组相比,小檗胺(16 mg/L)联合热疗对SGC-7901/DPP细胞的增殖、生长起到抑制作用,同时对SGC-7901/DPP 细胞的凋亡起到促进作用 (P<0.05)。 与单独热疗组或者单独小檗胺组相比,小檗胺(16 mg/L)联合热疗能够使SGC-7901/DPP细胞的Bcl-2的蛋白水平降低,同时使SGC-7901/DPP细胞的cleaved caspase-3, cleaved caspase-9以及Bax的蛋白水平增加(P<0.05)。进一步实验发现,与单独热疗组或者小檗胺组相比,小檗胺(16 mg/L)联合热疗能够降低SGC-7901/DPP细胞的多药耐药基因1 （MDR1）以及多药耐药相关蛋白1（MRP1）的蛋白水平。结论 小檗胺联合热疗对SGC-7901/DPP的增殖有抑制作用,其机制可能是通过调控凋亡相关蛋白促进SGC-7901/DPP凋亡以及抑制MDR1和MRP1蛋白水平有关。     

γ-生育三烯酚抑制SGC-7901细胞上皮间质转化作用机制探讨

目的 观察γ-生育三烯酚(γ-T3)对转化生长因子(TGF-β1)诱导人胃癌SGC-7901细胞发生上皮间质转化(EMT)细胞迁移和侵袭能力的调控作用,探讨其可能的抑制机制.方法 用浓度为10ng/ml TGF-β1和10ng/ml TGF-β1+30μmol/L γ-T3分别作用于SGC-7901细胞24 h;利用倒置显微镜观察细胞形态学变化,并采用体外划痕实验、细胞侵袭实验和蛋白印迹等技术,检测γ-T3对TGF-β1诱导的胃癌细胞迁移和侵袭能力,以及E-cadherin和vimentin蛋白表达的影响.结果 γ-T3抑制TGF-β1诱导人胃癌SGC-7901细胞发生EMT.10ng/ml TGF-β1组细胞多数呈梭型,细胞边界模糊,细胞间间隙大;10ng/ml TGF-β1+30μmol/L γ-T3组细胞呈不规则多边形,细胞边界较清晰,间隙小.γ-T3抑制由TGF-β1诱导的SGA7901细胞的迁移能力(F＝74.106, P<0.05).γ-T3抑制由TGF-β1诱导的SGA7901细胞的侵袭能力(F＝181.921,P=0.000).γ-T3抑制TGF-β1诱导的E-cadherin蛋白表达降低(F=305.818,P=0.000);γ-T3也抑制TGF-β1诱导的vimentin蛋白表达增强(F=456.036, P=0.000).结论 γ-T3可能通过上调E-cadherin和下调vimentin蛋白表达,抑制TGF-β1诱导的人胃癌SGC-7901细胞发生EMT,降低胃癌细胞的迁移和侵袭能力.     

Iressa抑制胃癌SGC-7901细胞生长的研究

目的:探讨iressa对胃癌SGC.7901细胞增殖,细胞周期和细胞凋亡的影响。方法:用四氮甲唑蓝(MTT)法检测不同浓度iressa对胃癌SGC-7901细胞增殖的影响;用流式细胞仪检测不同浓度iressa对胃癌SGC-7901细胞周期分布和细胞凋亡的影响。结果:在5~20μmol/L浓度范围内,iressa对SGC-7901的生长具有明显的抑制作用,并呈时间和剂量依赖性。10μmol/L和20μol/L的iressa可以导致SGC-7901细胞Gl期阻滞,并引起细胞凋亡。结论:Iressa可改变SGC-7901细胞周期分布,诱导细胞凋亡,从而抑制细胞增殖。     

As2O3对肾癌786-0细胞5-氟尿嘧啶药物敏感性的研究

目的 探讨As2O3与5-氟尿嘧啶(5-FU)联合应用对肾癌细胞786-0细胞株细胞增殖、细胞凋亡及X连锁凋亡抑制蛋白(XIAP)表达的影响.方法 取对数生长期786-0细胞,MTT比色法检测As2O3和/或不同浓度5-FU对细胞生长抑制作用;流式细胞仪检测细胞凋亡率;RT-PCR法及蛋白质印迹法检测XIAP mRNA表达及XIAP蛋白质表达的变化.结果 不同浓度的5-FU分别作用786-0细胞后,细胞生长受到抑制,但无明显的时间、浓度相关性;2μmol/L As2O3与不同浓度5-FU联合应用对786-0细胞的增殖抑制率随作用时间、药物浓度的增加逐渐升高,与单药相比较(P＜0.01),两药相互作用系数显示为协同作用.48h检测2μmol/L As2O3与不同浓度5-FU联合用药处理的786-0细胞的凋亡率明显增加,与单药相比(P＜0.01);XIAP mRNA表达明显减少,与单药相比(P ＜0.01);2μmol/L As2O3与400 μg/ml 5-FU联合应用48h XIAP蛋白表达亦明显减少,与单药相比(P＜0.01).结论 As2O3联合5-FU可以明显提高肾透明细胞癌的化疗敏感性,抑制786-0细胞增殖,诱导肿瘤细胞凋亡,这一作用与抑制786-0细胞XIAP基因的表达有关.     

复方苦参注射液对胃癌细胞SGC-7901凋亡的诱导作用及机制

目的探讨复方苦参注射液对胃癌细胞SGC-7901凋亡的诱导作用及其作用机制。方法采用MTT法观察复方苦参注射液对胃癌细胞SGC-7901增殖抑制作用;应用免疫组织化学法观察复方苦参注射液作用后对凋亡相关蛋白Bak、Caspase-3表达的影响。结果复方苦参注射液作用于SGC-7901细胞增殖的抑制呈时间浓度依赖性。作用24 h后,100μL/mL复方苦参注射液作用于SGC-7901细胞的活力是对照组(不含药的培养液)的81.0%,而300μL/mL时是70.2%;作用48 h后,100μL/mL复方苦参注射液对SGC-7901细胞的活力是对照组的53.3%,而300μL/mL时仅为40.9%。100μL/mL复方苦参注射液作用于SGC-7901细胞48 h后,免疫组化检测示凋亡相关蛋白Bak、Caspase-3表达均增加,且以表达于细胞质中为主。结论复方苦参注射液能诱导人胃癌细胞SGC-7901凋亡,其诱导凋亡的机制可能与Bak、Caspase-3蛋白表达增强有关。     

苦参碱联合5-FU诱导人胃癌细胞凋亡的机制

目的探讨苦参碱和5-氟尿嘧啶(5-FU)联用诱导人胃癌细胞SGC-7901凋亡的机制.方法 1.0 mg/mL苦参碱联合20 mg/L 5-FU作用于SGC-7901细胞48 h, RT-PCR和免疫细胞化学检测bcl-2、bax、Fas、Fas-L的mRNA和蛋白表达;免疫细胞化学、酶联免疫吸附试验和Western blot检测活性caspase-3的表达,并与空白对照组和单独苦参碱或5-FU用药组比较.结果联合用药组bcl-2下调,bax、Fas上调,与空白对照组有显著差异(P<0.05),与单独用药组相比无显著性差异(P>0.05);联合用药组活性caspase-3表达显著增高,与各组比较均有显著差异(P<0.01).结论苦参碱和5-FU联用通过上调bax、下调bcl-2/Fax,显著提高活性caspase-3的表达,从而协同诱导胃癌细胞SGC-7901的凋亡.     

三苯氧胺联合5-氟尿嘧啶对人结肠癌细胞HT-29的抑制作用

目的 探讨三苯氧胺(tamoxifen,TAM)联合5-氟尿嘧啶(5-FU)对人结肠癌细胞株HT-29的增殖、凋亡及细胞迁移的影响.方法 采用MTT法、流式细胞仪分别检测不同浓度(12.5、25、50 μmol/L)5-FU及其联合TAM对HT-29细胞增殖的抑制作用、细胞凋亡的诱导作用,应用细胞划痕实验检测TAM(1×10-7、1×10-6、1×10-5、1×10-4mol/L)、5-FU及其联合TAM对细胞迁移的抑制作用.结果 5-FU及其联合TAM均可提高HT-29细胞增殖抑制率,单用5-FU的抑制率分别为(50.8±8.9)%和(62.8±8.8)%和(69.7±9)%,12.5 μmol/L 5-FU联合低浓度TAM(1×10-7、1×10-6 mol/L)的抑制率分别为(82.9±2.9)%和(84.0±1.6)%,其作用呈剂量依赖关系;高浓度(1×10-4mol/L)TAM联合12.5 μmol/L 5-FU表现出明显的促细胞凋亡作用[凋亡率为(95.7±4.2)%];划痕实验证实经1×10-6和1×10-5mol/L TAM及单用5-FU处理HT-29细胞72 h后均可明显地抑制细胞的迁移,但联合用药未显示出较TAM单药更明显的抑制作用.结论 TAM和5-FU均具有抑制细胞增殖、迁移和促进细胞凋亡的作用,TAM亦可增加结肠癌细胞株HT-29对5-FU的敏感性.     

三氧化二砷诱导胃癌细胞凋亡及其对bcl-2基因和bax蛋白表达的影响

目的探讨三氧化二砷(As2O3)诱导胃癌细胞凋亡及其对bcl-2基因、bax蛋白表达的影响。方法分别以0μmol/L、1μmol/L、2μmol/L、4μmol/L和8μmol/L浓度的As2O3作用于胃癌SGC-7901细胞24 h、48 h和72 h,采用四甲基偶氮唑蓝(MTT)检测法检测各组吸光度值、细胞生长抑制率,采用流式细胞仪(FCM)检测bcl-2基因和bax蛋白的表达情况。结果随着As2O3浓度的增高及作用时间的延长,MTT吸光度值逐渐降低,1μmol/L、2μmol/L、4μmol/L、8μmol/L组分别与0μmol/L组比较,不同作用时间MTT吸光度值比较,差异均有统计学意义(P<0.05)。1μmol/L的As2O3对细胞增殖抑制作用较小,随着As2O3浓度的增高及作用时间的延长,细胞增殖抑制率相应增加,2μmol/L、4μmol/L、8μmol/L组分别与1μmol/L组比较,不同作用时间细胞增殖抑制率比较,差异均有统计学意义(P<0.05)。不同浓度的As2O3作用于SGC-7901细胞后,bcl-2基因呈低表达,bax蛋白呈高表达,bcl-2/bax比值降低且呈剂量依赖性,不同浓度As2O3组与对照组bcl-2基因、bax蛋白表达情况比较,差异均有统计学意义(P<0.05)。结论 As2O3对胃癌细胞的生长具有明显的抑制作用,其机制可能与下调bcl-2基因表达,上调bax蛋白表达从而诱导胃癌细胞的凋亡有关。     

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…     

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.     

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.     

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.