曲古霉素A对肺腺癌细胞NCI-H1299增殖抑制作用及机制

目的观察组蛋白去乙酰化酶（histone deacetylase）抑制剂曲古霉素A（trichostatin A,TSA）对体外培养肺腺癌NCI-H1299细胞生长情况及相关基因表达的影响,并探讨其可能的作用机制。方法MTT法检测不同浓度（0.1、0.2、0.4、2.0μmol/L）的TSA对人肺腺癌NCI-H1299生长的影响,流式细胞术检测处理后NCI-H1299细胞周期分布及凋亡率的变化;Western印迹法检测处理后人肺腺癌NCI-H1299组蛋白H4乙酰化水平的变化;Real-TimePCR检测处理后人肺腺癌NCI-H1299、p21、cyclin B1、Bcl-2和Bax的表达。结果TSA体外能明显抑制NCI-H1299细胞生长,且抑制作用呈明显的剂量、时间依赖性。0.4μmol/L TSA诱导后,流式细胞术检测示细胞阻滞于G2/M期;TSA可明显提高NCI-H1299组蛋白乙酰化水平,并诱导p21和Bax的mRNA表达和抑制Bcl-2和cyclin B1的mRNA表达。结论TSA可通过诱导细胞凋亡及细胞周期阻滞而发挥体外抗肺腺癌细胞株作用,其作用机制可能涉及组蛋白乙酰化水平以及诱导调控相关基因p21、Bax、Bcl-2和cyclin B1。     

曲古抑菌素A对膀胱癌细胞的抑制作用及其机制

目的本研究探讨曲古抑菌素A(TSA)对人膀胱癌细胞的杀伤作用和机制.方法以不同浓度的TSA作用于体外培养的膀胱癌BIU-87细胞株;采用MTT法检测细胞生长抑制率;以流式细胞术(FCM)测定不同浓度的TSA作用前后膀胱癌细胞的凋亡情况及细胞周期变化;应用RT-PCR分析了TSA作用前后膀胱癌细胞中p21^WAF1 mRNA表达的变化.结果 TSA在纳摩尔级浓度即能有效抑制膀胱肿瘤细胞增殖,FCM结果表明TSA能显著诱导细胞发生凋亡且主要诱导G1期细胞发生凋亡而出现凋亡峰,RT-pCR结果示TSA处理能显著诱导p21^WAF1 mRNA表达.上述结果都呈现出明显的量-效与时-效关系.结论 TSA在体外能有效抑制对传统化疗耐药的人膀胱癌细胞生长,其抗肿瘤生长机制之一可能是通过上调p21^WAF1蛋白水平实现的.     

曲古霉素A对人子宫内膜癌HEC-1B细胞增殖和凋亡的作用及相关机制

【目的】探讨组蛋白去乙酰化酶抑制剂曲古霉素A(trichostatin A,TSA)对人子宫内膜癌HEC-1B细胞增殖和凋亡的作用及其可能机制。【方法】应用不同浓度的TSA处理子宫内膜癌HEC-1B细胞72 h,Western blotting法检测细胞内组蛋白H4乙酰化水平及p21蛋白,荧光定量PCR方法检测p21基因mRNA表达,MTT法检测细胞增殖,流式细胞术检测细胞凋亡率。【结果】经TSA作用后,人子宫内膜癌HEC-1B细胞内组蛋白H4乙酰化水平增加,p21基因mRNA及蛋白表达增加;同时细胞生长受到抑制,细胞凋亡增加。【结论】TSA通过提高组蛋白乙酰化水平,增加p21基因表达,抑制子宫内膜癌HEC-1B细胞的增殖和诱导细胞凋亡。     

曲古菌素A调节NB4细胞组蛋白乙酰化和p21WAF1/CIP1表达

目的研究去乙酰化酶抑制剂曲古菌素A(trichostatinA，TSA)对人急性早幼粒细胞白血病细胞NB4组蛋白H3乙酰化水平的调节作用及对细胞周期素依赖性激酶抑制剂p21^WAF1/CIP1。表达的影响。方法应用300、150、75、37．5、18．75nmol／L浓度的TSA分别作用NB4细胞4、8、12、24、48h，提取细胞的总mRNA和总蛋白，采用RT-PCR技术检测p21^WAF1/CIP1表达情况，并用免疫印迹技术(Western blot)观察组蛋白H3的乙酰化水平变化及p21^WAF1/CIP1蛋白的表达水平。结果TSA对组蛋白H3乙酰化作用随时间改变而变化；在低浓度时就可引起组蛋白H3的乙酰化。TSA对p21^WAF1/CIP1 p21^WAF1/CIP1蛋白表达的影响呈时间和剂量依赖性。结论TSA能够明显上调NB4细胞组蛋白H3的乙酰化水平，促进细胞周期依赖性激酶抑制剂p21^WAF1/CIP1的表达。     

重组腺病毒突变型人低氧诱导因子1α对细胞凋亡调节机制的研究

目的 研究重组腺病毒突变型人低氧诱导因子1α(Ad-HIF-1α-Ala564-Ala803)对细胞凋亡的调节机制.方法 将重组腺病毒Ad-HIF-1α-Ala564-Ala803和对照病毒Ad-lacZ感染常氧下LoVo细胞.荧光定量PCR检测不同时间点HIF-1α,p21WAF1/CIP1的mRNA表达水平,Westernblot检测HIF-1α,p21WAF1/CIP1的蛋白表达水平,及Hoechst染色检测loVo细胞的凋亡率.结果 Ad-HIF-1α-Ala564-Ala803感染LoVo细胞后随着HIF-1αmRNA和蛋白表达水平的增高.p21WAF1/CIP1的mRNA和蛋白表达水平也相应增高,Hoechst染色示Ad-HIF-1α-Ala564-Ala803组细胞的凋亡率(16.2%)gq显高于对照组(5.5%)(P=0.00).结论 HIF-1α可通过上调p21WAF1/CIP1的表达,诱导细胞周期停滞,促进细胞凋亡.     

曲谷抑霉素A调控人干扰素调节因子3基因初步研究

目的：探讨组蛋白去乙酰化酶抑制剂（histone deacetylase inhibitor, HDACi）曲谷抑霉素A（trichostain A, TSA）对人干扰素调节因子3（interferon regulatory factor 3, IRF3）基因表达的影响,初步分析TSA调控IRF3基因的乙酰化机制。方法：双荧光素酶活性分析法检测TSA和组蛋白乙酰化酶（histone acetylase, HAT）野生型p300对IRF3基因启动子活性的影响;实时荧光定量PCR检测TSA对IRF-3基因mRNA水平的影响;Western blot检测TSA对IRF3蛋白水平的影响。结果：不同浓度TSA干预后IRF3基因启动子活性均增加,TSA浓度为1 μmol/L时,PS1、PS6相对荧光素酶活性分别增加75%、155%;过表达野生型p300后PS1相对荧光素酶活性增加267%;TSA（1、10 μmol/L）干预细胞6 h后,IRF3基因mRNA水平增加23%、39%,干预24 h后,mRNA水平增加17%、64%;TSA（0.1、1、5 μmol/L）干预细胞24 h后,蛋白表达量分别增加15%、72%、191%。结论：TSA上调IRF3基因mRNA和蛋白表达,TSA和组蛋白乙酰化酶p300均可正向调控IRF3基因启动子活性,TSA可能通过IRF3通路发挥治疗免疫性疾病和抗肿瘤作用。     

TSA对食管癌细胞系EC9706细胞周期作用及分子机制的探讨

目的 研究去乙酰化酶抑制剂曲古菌素A(TSA)对食管癌细胞 EC9706细胞周期的作用及机制.方法 将浓度为0.5、1.0、1.5 μmol/L TSA作用EC9706细胞24 h,用MTT观察不同浓度 TSA 对 EC9706细胞的生长抑制作用;流式细胞仪检测细胞生长及周期;Western Blot检测TSA对食管癌细胞周期相关基因的表达.结果 1.0 μmol/L 浓度的TSA 对EC9706 细胞有明显的生长抑制作用,并呈现一定的量效关系,在1.0 μmol/L浓度之上可明显诱导食管癌细胞EC9706细胞周期阻滞,明显增强p21、p27基因的表达,明显降低 CCND1、CDK4D基因的表达.结论 一定剂量的TSA可抑制食管癌EC9706细胞的生长,通过调控多个细胞周期相关基因诱导食管癌细胞细胞周期阻滞,细胞阻滞的发生与p21、p27基因表达的增加及CCND1、CDK4D基因表达的减少相关.     

p21WAF1/CIP1、细胞周期素D1、p53在结肠癌的表达

目的探讨p21WAF1/CIP1、细胞周期素D1(cyclin D1)及p53在结肠癌的表达及三个基因产物间的相关性.方法应用原位杂交技术及免疫组织化学技术检测p21WAF1/CIP1、cyclin D1的mRNA及p53蛋白在结肠癌中的表达.结果 p21WAF1/CIP1 mRNA在癌组织的表达率为84.13%,明显高于癌旁组织61.90%(P<0.05).cyclin D1 mRNA在癌组织表达率为63.49%,明显高于癌旁组织44.44%(P<0.05).p53蛋白在结肠癌的阳性表达率为38.09%,p53过表达组p21WAF1/CIP1 mRNA表达较p53阴性组为低,二者存在显著差异(P<0.05),p53过表达组cyclin D1 mRNA表达较p53阴性组为高,差异具有显著性(P<0.05).p21WAF1/CIP1 mRNA与cyclin D1 mRNA表达存在相关性(P<0.05).结论 p21WAF1/CIP1、cyclin D1、p53的异常表达及它们之间可能存在的相互作用,可能在结肠癌的癌变过程中发挥重要作用.     

曲古抑菌素A对膀胱癌T24细胞增殖及Apaf-1和APC基因表达的影响

[目的]研究组蛋白去乙酰化酶抑制剂曲古抑菌素A(TSA)对人膀胱癌T24细胞的增殖抑制作用及对Apaf-1、APC基因表达的影响.[方法]采用3×10-4mmol/L TSA作用T24细胞,MTT法检测TSA对T24细胞生长的抑制作用;流式细胞术(FCM)检测TSA作用前后T24细胞周期和凋亡的变化;逆转录-聚合酶链反应(RT-PCR)法检测TSA作用前后膀胱癌细胞中Apaf-1、APC mRNA表达的变化.[结果]TSA对T24细胞的生长具有明显的抑制作用;TSA作用后T24细胞的G0/G1期比例增加,S期比例减少,细胞凋亡率增加(P＜0.05);RT-PCR结果显示TSA处理能明显诱导Apaf-1、APC基因表达增加.[结论]TSA能抑制T24细胞体外生长,诱导细胞周期阻滞和凋亡,其可能通过诱导Apaf-1、APC基因表达增加而发挥体外抗膀胱癌作用.     

Tamoxifen诱导MA782细胞凋亡与P21/CIP1、PCNA的关系

目的　探讨三苯氧胺 (TamoxifenTAM )诱导ER(- )小鼠乳腺癌细胞MA782细胞凋亡及其分子作用机制。方法　TAM体外作用于MA782细胞 ,用MTT法检测细胞增殖活性、流式细胞仪检测细胞凋亡和细胞周期分布 ,透射电镜观察细胞凋亡超微结构改变 ,免疫组化检测MA782细胞p2 1/CIP1、PCNA蛋白表达 ,并用病理图像分析软件进行半定量分析。 结果　 6 μmol/L、10 μmol/LTAM在体外能明显抑制MA782细胞生长 ,诱导细胞凋亡 ,作用 2 4小时细胞凋亡率分别为 7.0 4 %、19.0 4 % ,10 μmol/LTAM作用 4 8小时后细胞凋亡率从 19.0 4 %上升到 5 1.2 7% ,与对照组比较有显著差异 (P <0 .0 1)。 2 μmol/LTAM作用不同时间后 ,细胞上述蛋白无明显变化 ,而 6 μmol/L、10 μmol/LTAM作用不同时间后 ,PCNA蛋白表达有不同程度的下降 ,p2 1/CIP1蛋白表达有不同程度的上升与对照组相比差异显著 (P <0 .0 5或P <0 .0 1)。结论　TAM诱导MA782细胞凋亡其分子作用机制可能与下调细胞PCNA蛋白表达及上调 p2 1/CIP1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…     

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.