全反式维甲酸诱导HL60细胞分化的细胞周期时相性研究

目的　探讨全反式维甲酸诱导分化的HL6 0细胞周期变化 ,进一步揭示细胞分化在细胞周期中的时相特异性。方法　以分化诱导剂全反式维甲酸 (终浓度为 10 μmol/L)影响下不同时间点的HL6 0细胞为检测对象 ,应用流式细胞术分析细胞的大小及细胞表面的分化标志 ;碘化丙啶 (PI)染色后用激光共聚焦显微镜观察细胞形态从而对已分化细胞进行确认 ;应用流式细胞术分析药物诱导的细胞周期变化 ,检测G1期的Ki6 7表达水平 ;再应用流式分选术结合激光共聚焦显微镜观察各期细胞形态。结果　①随着药物诱导时间的延长 ,细胞的体积逐渐增大 ,被诱导的细胞出现髓系细胞表面的分化标志物CD11b。②全反式维甲酸导致HL6 0细胞周期的G0 /G1峰升高 ,S期水平下降。③随着药物诱导时间的延长 ,G1期的Ki6 7的表达水平逐渐下降。④只在G1期细胞中可见到已分化细胞。结论　全反式维甲酸可以诱导HL6 0细胞周期的G1早期→G1晚期阻滞 ,并诱导HL6 0沿着粒系方向分化 ,细胞分化完成于细胞周期中的G1早期。     

全反式维甲酸对人卵巢癌细胞株COC1增殖分化的影响

目的:探讨全反式维甲酸(ATRA)对人卵巢癌细胞株COC1增殖分化的影响.方法:选用人卵巢癌细胞株COC1进行体外培养,以不同浓度的ATRA处理COC1细胞,MTT比色法检测细胞增殖抑制情况;流式细胞仪进行细胞周期时相分析;光镜及透射电镜进行形态学观察;免疫细胞化学法测定细胞内增殖细胞核抗原Ki-67的表达;酶联免疫法测定培养液中卵巢癌标志物CA125水平的变化.结果:ATRA浓度为10～10-5mol/L时,均明显抑制COC1细胞的增殖;ATRA处理COC1细胞后G0/G1期细胞增加,S期细胞减少.经ATRA处理的COC1细胞发生显著形态学分化,Ki-67表达减弱,培养液中CA125的表达水平降低.结论:ATRA能明显抑制人卵巢癌细胞株COC1的生长增殖并诱导部分细胞向良性分化.     

丹参酮A与全反式维甲酸协同诱导急性早幼粒细胞白血病细胞株的分化和凋亡

目的　研究丹参酮 A(Tanshinone A,Tan A)联合全反式维甲酸 (ATRA)对早幼粒细胞白血病细胞 (NB4 )诱导分化及凋亡的协同效应。方法　 0 .5 μg/ m l Tan A分别联合 0 .5 μg/ ml、0 .2 5 μg/ ml和 0 .12 5 μg/ml ATRA作用 NB4细胞 5 d,观察 NB4细胞形态学变化 ,检测硝基蓝四氮唑 (NBT)还原能力 ;流式细胞术检测CD11b,CD33的表达 ,并进行细胞周期和细胞凋亡分析。结果　 Tan A联合 ATRA可协同诱导 NB4细胞分化和凋亡。联合作用组第 5 d细胞生长抑制率均超过 80 % ;90 %左右的 NB4细胞分化 ,其中杆状和分叶核细胞比例超过6 5 % ;NBT还原能力显著升高。流式细胞术分析显示 CD11b表达升高 ,CD33表达降低 ;G0 / G1 期细胞增加 ,有明显的细胞凋亡 ,与 Tan A或 ATRA单独作用组相比均有显著性差异 (P<0 .0 1)。Tan A与 ATRA(0 .12 5 μg/ m l～0 .5 μg/ m l)联合对 NB4细胞的影响没有明显的浓度依赖倾向。结论　 Tan A联合 ATRA对 NB4细胞诱导分化和凋亡有协同作用 ;在 ATRA一定浓度范围内 ,这种协同作用无 ATRA剂量依赖性。     

小剂量阿糖胞苷诱导HL-60细胞分化的作用

目的观察小剂量阿糖胞苷对HL 6 0细胞生长与分化的影响及其可能的作用机制。方法阿糖胞苷 (10 8M)作用HL 6 0细胞 2 6天 ,观察细胞生长 ,用流式细胞仪分析细胞周期 ,用免疫组化法检测P5 3、P2 1蛋白表达的变化 ,原位杂交法检测P5 3mRNA表达水平的改变。结果小剂量阿糖胞苷可诱导HL 6 0细胞向单核 /巨噬细胞分化 ,抑制HL 6 0细胞的增殖 ,使细胞停滞于G1期 ,P5 3,P2 1蛋白和P5 3mRNA表达明显增强。结论小剂量阿糖胞苷对HL 6 0细胞具增殖抑制和诱导分化作用 ,该作用与G1期阻滞及P5 3,P2 1表达增高有关。     

全反式维甲酸和苯乙酸钠联合对人肝癌细胞的诱导分化作用

目的　探讨全反式维甲酸 (ATRA)和苯乙酸钠 (Na-PA)两者对人肝癌细胞联合作用 .方法　应用台盼蓝染色、MTT法、流式细胞仪、甲胎蛋白测定等方法检测 ATRA和Na PA两者联合对人肝癌细胞的诱导分化作用 .结果　 10μmol· L- 1 ATRA,2 .5 mmol· L- 1 Na PA及两者联合作用 ,可抑制人肝癌细胞株 SMMC- 772 1细胞的生长 ,使细胞恶性表型向正常转化 ,其联合作用组 7d抑制率达 6 6 .5 % ,并能明显降低甲胎蛋白的分泌量 4 9.2 % ,使细胞周期 G0 / G1 期延长5 8.7% ,S期下降 35 .8% (P<0 .0 5 ) ,影响 DNA合成 ,最终产生抑制增殖诱导细胞分化的作用 .结论　 ATRA,Na PA及两者联合应用均可抑制 SMMC- 772 1细胞生长 ,诱导细胞分化 ,ATRA和 Na PA联合对人肝癌细胞的诱导分化有协同作用 .     

ATRA诱导肺癌细胞株A549分化与凋亡

目的:体外研究维甲类化合物的衍生物ATRA对A549肺癌细胞株作用,探讨ATRA对肿瘤防治作用的可能机制。方法:取对数生长期的常规培养的肺癌A549细胞用于试验,试验分1×10-5mol/L,1×10-6mol/L,1×10-7mol/L三组药物浓度和对照及空白对照5组,加药48h进行MTT测定,第6 d对1×10-5mol/L,1×10-6mol/L及对照组细胞进行流式细胞检测,并对1×10-5mol/L,1×10-6mol/L浓度进行电镜观察。结果:不同浓度ATRA对细胞增殖有明显地抑制作用,与阴性对照组比较,有统计学意义(P<0.01)。增殖抑制有良好剂量效应关系,(r=0.968),细胞阻滞于G0/G1期,高浓度组电镜下见凋亡细胞。结论:ATRA可诱导A549细胞分化及凋亡,为临床应用ATRA化学预防肺癌提供理论依据。     

HOXB1基因转染对HL—60细胞视黄酸代谢和α—干扰素表达 …

目的　探讨同源盒基因B1(HOXB1)转染对HL 6 0细胞视黄酸代谢和α 干扰素表达的影响。方法　采用脂质体介导的质粒转染、RT PCR及高效液相色谱 (HPLC)分析等方法进行分析检测。结果　2 .5× 10 -7mol/L全反式视黄酸 (ATRA)能抑制HOXB1转染及非转染HL 6 0细胞的增殖 ,HOXB1的高表达能明显减弱ATRA对HL 6 0细胞的增殖抑制作用 ;HPLC分析显示 ,转染细胞ATRA的代谢减慢 ;ATRA处理能诱导HOXB1转染及未转染HL 6 0细胞IFNα表达 ,加用外源性IFNα能上调ATRA处理HL 6 0细胞IFNα基因表达。结论　HOXB1转染使HL 6 0细胞ATRA代谢受抑 ,ATRA增殖抑制作用减弱 ,外源性IFNα能上调HL 6 0细胞IFNα表达     

维甲酸和1，25二羟维生素D3对LoVo细胞株细胞周期的影响

【目的】观察全反式维甲酸 (ATRA)和 1,2 5 二羟维生素D3 对大肠癌细胞株LoVo细胞周期的影响。【方法】流式细胞术测定细胞周期的分布。【结果】ATAR和 1,2 5 二羟维生素D3 使LoVo阻止在G0 /G1期 ,未发现明显的亚G1峰。【结论】单独或联合使用ATRA和 1,2 5 二羟维生素D3 均具有诱导分化LoVo细胞的作用 ,这种诱导分化与细胞凋亡无关。     

普乐林诱导HL-60细胞分化和凋亡研究

目的 :研究中药葛根的提取物普乐林对HL 6 0细胞的诱导分化和促凋亡作用。方法 :采用硝基苯唑氮兰(NBT)还原、NBT/MTT值及细胞表面抗原CD11b表达 ,观察细胞分化程度 ;通过细胞形态、DNA片段电泳、流式细胞(FCM)DNA含量分析检测细胞凋亡。结果 :80 μg .ml 1,16 0 μg .ml 1和 32 0 μg·ml-1普乐林对HL 6 0细胞具有诱导分化效应 ;且 32 0 μg .ml 1普乐林与 1μmol.L 1全反式维甲酸效果相当。 32 0 μg .ml 1和 6 40 μg.ml 1普乐林分别作用HL 6 0细胞 36h ,可出现典型的细胞凋亡形态。DNA凝胶电泳出现片段化的梯状带谱 ;普乐林同时可影响HL 6 0细胞的细胞周期进展 ,且随其浓度的增高 ,亚G1期细胞所占比例增加。结论 :普乐林具有诱导HL 6 0细胞分化及凋亡的双重作用。     

中药抗癌制剂对HL-60细胞的分化诱导研究

以人早幼粒白血病细胞株 (HL - 60 )为靶细胞 ,运用中药抗癌制剂对其进行体外培养和诱导分化 ,发现剂量在 2 0ul/ml时 ,可显著地抑制HL - 60细胞增殖 ,使原始细胞分化为中幼以下的成熟细胞 ,分化后的细胞具有NBT还原能力和吞噬功能。其形态的改变和吞噬能力与对照组维甲酸和中药苦参相似 (P >0 0 5 ) ;其NBT还原能力与苦参相当 (P >0 0 5 ) ,但稍低于维甲酸 (P <0 0 5 )。上述结果表明该制剂对HL - 60细胞具有较好的分化作用。     

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.     

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.     

TCM Treatment of Ankylosing Spondylitis by Tonifying the Kidney and Strengthening the Governor Vessel

Ankylosing spondylitis is a chronic and progressive disorder with inflammation mainly involving the central axis joints. It mainly affects the cervical spine and the lumbosacral area, with the pathogenesis closely related to the kidney and the Governor Vessel (GV). TCM holds that the syndrome is deficiency in origin and excess in superficiality, which is due to insufficiency of the kidney, deficiency of GV, and blocking of the channels with the invasion of exogenous evil, leading to poor circulation of qi and blood and malnutrition of the bones, muscles and joints. The TCM method of tonifying the kidney and strengthening GV to regulate circulation of qi and blood and check the arthralgia pain should be adopted, with the Kidney-Tonifying and GV Strengthening Decoction (益肾强督汤) prescribed.     

IMPROVING P-gp EXPRESSION IN HUMAN MONONUCLEAR CELLS IN VITRO TRANSFECTED BY MULTIDRUG RESISTANCE-1 mRNA

CHEMOTHERAPY playsa greatrolein the treat- ment of malignanttumors,especiallyingynecolo- gicalones.But inanticancerchemotherapy,leuko-cytopeniaisfrequentlytheprimarydose-limitingsideeffect factor.Moreover,cancersarefrequentlychemoresistantbe-causeof overexpressionof P-glycoprotein(P-gp), which isencodedby multidrugresistancegene (MDR1 ) and detectableinup to50% ofhuman cancersand renderscellsresistancetoanticancerdrugs.The safetyand potentialtherapeuticbenefitof mdr1 gene transferredto h…