不同成熟状态小鼠树突状细胞的体外诱导

目的：体外诱导小鼠骨髓来源的不同成熟状态树突状细胞(dendritic cells，DCs)。方法：rmGM—CSF体外培养小鼠骨髓细胞，5～6d后，利用磁性细胞分离器(MACS)分离CD11C^ 细胞，部分细胞加入rmTNFα继续培养1～2d，通过流式细胞仪检测分别检测细胞表面标志，同种混合淋巴细胞反应检测细胞的体外刺激能力。结果：小鼠骨髓细胞经rmGM-CSF培养5～6d，再经过MACS分离可获得大量未成熟DCs，细胞表面出现少量短而粗的突起，低水平表达MHCI／分子和共刺激分子CD80、CD86及CI40，刺激同种CD4^ T细胞的混合淋巴细胞反应能力较弱：加入rmTNFα继续培养可获得成熟DCs，细胞表面出现大量细长突起，细胞表面高水平表达MHC Ⅱ分子和共刺激分子CD80、CD86及CI40，刺激同种CI4^ T细胞的混合淋巴细胞反应能力较强。结论：通过rmGM-CSF或rmGM-CSF rmTNFα体外培养体系可以获得大量未成熟DCs或成熟DCs，为进一步研究DCs的生物学功能提供实验基础。     

Serrate1基因转染对小鼠树突状细胞生物学特性的影响

目的探讨Serrate1基因转染对小鼠树突状细胞生物学特性的影响.方法将Serrate1基因体外转染小鼠DCs,经G418筛选后,Western blot检测DCs Serrate1的表达,流式细胞仪检测转染后DCs表面共刺激分子的表达,混合淋巴细胞反应观察DCs对T淋巴细胞增殖的影响.结果Serrate1基因转染的树突状细胞Serrate1的表达较未转染组明显增高,转染Serrate1基因的DCs表面CD80、CD86等共刺激分子的表达与对照组比较无明显改变(P＞0.05);在混合淋巴细胞反应中,转染DCs对T细胞的增殖有抑制作用,而空载体pcDNA 3.1( )对照组与未转染组的树突状细胞具有强烈的激发T细胞增殖的能力.结论Serrate1基因转染能在不影响DCs表面共刺激分子表达的情况下显著抑制T细胞活化.     

核因子-κB圈套寡核苷酸转染对小鼠成熟树突状细胞生物学特性的影响

目的 探讨核因子KB圈套寡核苷酸(NF-κB decoy ODN)转染对小鼠成熟树突状细胞(DCs)生物学特性的影响.方法 体外诱导Balb/c小鼠骨髓细胞生成未成熟DCs(imDCs),经抗原OVA以及LPS孵育后成为OVA冲击的骨髓来源成熟nCs(mDCs),流式细胞仪检测DCs表面分子CDllc以及MHC-Ⅱ的表达予以鉴定;将NF-KB decoy ODN体外转染小鼠骨髓来源成熟DCs,同时设立阴性对照组(转染NF-KB"变异"ODN)以及未转染组,EMSA检测转染后NF-KB的活性变化;流式细胞仪检测各组DCs表面共刺激分子(CIMO、CDSO、CD86)的表达;混合淋巴细胞反应观察各组DCs对OVA致敏的T淋巴细胞增殖的影响.结果 成功培养出骨髓来源成熟DCs;NF-κB decoy ODN转染DCs的NF-KB活性明显降低(P<0.05),DCs表面CD40、CDS0共刺激分子的表达与阴性对照组、未转染组比较无明显改变(P0.05),而CD86的表达与其他各组比较明显降低(P<0.05);在混合淋巴细胞反应中,NF-KB decoy ODN转染DCs对T细胞的增殖有抑制作用(P<0.05),而阴性对照组与未转染组的DCs具有强烈的激发T细胞增殖的能力(P<0.05).结论 NF-KB decoy ODN转染DCs可能通过CD86的表达降低显著抑制抗原特异性T细胞活化,该改良的DCs有可能用于哮喘的免疫治疗.     

Serrate1基因转染对小鼠树突状细胞生物学特性的影响

目的 探讨Serratel基因转染对小鼠树突状细胞生物学特性的影响。方法 将Serratel基因体外转染小鼠DCs，经G418筛选后，Western blot检测DCs Serratel的表达，流式细胞仪检测转染后DCs表面共刺激分子的表达，混合淋巴细胞反应观察DCs对T淋巴细胞增殖的影响。结果 Serratel基因转染的树突状细胞Serratel的表达较未转染组明显增高，转染Serratel基因的DCs表面CD80、CD86等共刺激分子的表达与对照组比较无明显改变（P〉0．05）；在混合淋巴细胞反应中，转染DCs对T细胞的增殖有抑制作用，而空载体pcDNA3．1（＋）对照组与未转染组的树突状细胞具有强烈的激发T细胞增殖的能力。结论 Serratel基因转染能在不影响DCs表面共刺激分子表达的情况下显著抑制T细胞活化。     

小鼠骨髓源性树突状细胞体外诱导培养体系的构建

建立一种体外诱导培养小鼠骨髓源性的树突状细胞(DCs)方法,在镜下可观察到培养出的未成熟树突状细胞(imDCs)比成熟树突状细胞(mDCs)细胞突起少。流式细胞术检测 CD80、CD86、MHC-Ⅱ分子在 imDCs 的表达显著低于在 mDCs 上的表达。同种异基因混合淋巴细胞反应显示DCs 刺激 T 细胞增殖的能力随着 DCs 所占比例的增大而增强,在相同比例条件下对刺激 T 细胞增殖的能力,imDCs 显著低于成熟 mDCs。该诱导方法可获得大量符合科研要求的小鼠骨髓源性 DCs。     

树突状细胞表面共刺激分子在哮喘小鼠中的作用研究

目的:研究哮喘小鼠骨髓来源树突状细胞(DCs)的表型及共刺激分子在哮喘发病中的影响.方法:用卵清蛋白建立哮喘模型,利用rmGM-CSF和rmIL-4体外诱导骨髓细胞分化为DCs,流式细胞仪检测DCs表面共刺激分子的表达,混合淋巴细胞反应检测DCs刺激同种异体的T淋巴细胞增殖的能力.结果:在两种细胞因子的作用下,从骨髓中可以诱导出大量的DCs;且均表达DCs的表面标志(33D1).哮喘组DCs表达CD86分子的水平高于对照组,而CD40、CD80在两组之间没有差异;哮喘组与对照组DCs均能强烈刺激同种异体T淋巴细胞的增殖,哮喘组DCs的刺激能力明显强于对照组.结论:哮喘组DCs的抗原递呈能力增强,表明DCs在哮喘的发病中可能起着重要作用.     

滑膜抗原特异性调节性T细胞的诱导扩增

目的 诱导扩增BALB/C小鼠滑膜抗原特异性调节性T细胞(antigen specific regulatory T cells,sTregs)的产生,为探索滑膜抗原sTregs在类风湿性关节炎(rheumatoid arthritis,RA)的治疗作用提供实验基础.方法 体外诱导培养小鼠骨髓源性树突状细胞(DCs)并负载Ⅱ型胶原蛋白肽,在白细胞介素-2(IL-2)的协同作用下,与小鼠脾CD4+CD25+自然发生的调节性T细胞(nTregs)混合培养,以刺激产生滑膜抗原sTregs,并用混合淋巴细胞抑制实验评估扩增的sTregs抑制CD4+CD25-T细胞增殖的功能是否具有抗原特异性.结果 经DCs刺激1周后,小鼠CD4+CD25+Tregs扩增了6倍,并且增殖的sTregs在混合淋巴细胞抑制试验中较多克隆Tregs(Poly-Tregs)具有较强的抑制作用(P<0.01),显示抗原特异性抑制的特点.结论 以自身DCs负载滑膜源性抗原(Ⅱ型胶原蛋白肽)可以从小鼠脾CD4+CD25+nTregs中诱导扩增滑膜抗原sTregs.     

RNA转染树突状细胞诱导特异性抗前列腺癌免疫反应的实验研究

目的 研究前列腺癌细胞RNA转染树突状细胞(DCs)诱导的细胞毒T淋巴细胞(CTL)对前列腺癌细胞的特异性杀伤作用.方法 联合应用粒细胞-巨噬细胞集落刺激因子(GM-CSF)、白细胞介素-4 (IL-4) 诱导培养小鼠骨髓单个核细胞向DCs分化,脂质体法转染RNA,流式细胞术测定转染后树突状细胞共刺激分子表达的变化,MTT法测定DCs对T淋巴细胞的刺激能力.ELISA法检测IFN-γ的分泌水平.LDH法测定DCs诱导的CTL对前列腺癌细胞的杀伤效果.结果 用GM-CSF和IL-4诱导培养小鼠骨髓来源的单核细胞,体外诱导培养6 d后获得大量DCs;RNA转染后,DCs表面共刺激分子CD40、CD80、CD86和MHC-Ⅱ分子表达提高(P<0.05),刺激T淋巴细胞增殖能力明显提高(P<0.01);前列腺癌RNA转染的DCs诱导CTL对前列腺癌细胞和肝癌细胞的杀伤作用有明显差异(P<0.01).结论 前列腺癌细胞RNA转染DCs后诱导的CTL对前列腺癌有特异性杀伤作用,为进一步抗肿瘤疫苗的实验研究奠定了基础.     

肝癌细胞HepG2与肝癌患者树突状细胞融合瘤苗的体外效应

目的将肝细胞癌(HCC)患者树突状细胞(DCs)与肝癌细胞HepG2融合制备瘤苗,检测其体外诱导同源T细胞产生特异性抗HepG2的免疫效应.方法以血细胞分离机分离富集HCC患者外周血单个核细胞(PBMCs),应用重组人粒细胞/巨噬细胞集落刺激因子(rhGM-CSF)、白细胞介素-4(rhlL-4)体外诱导培养DCs;聚乙二醇融合DCs与肝癌细胞HepG2,MTT法测定融合细胞(DCs/HepG2)刺激同源T淋巴细胞增殖分化能力,细胞毒性实验检测DCs/HepG2诱导细胞毒性T淋巴细胞(CTL)对HepG2的特异性杀伤作用.结果融合细胞DCs/HepG2高表达成熟DC表面分子,其中CD8390.4%,CD8087.7%,CD8684.4%,HLA-DR98.5%;其刺激同源T淋巴细胞增殖的能力显著高于HepG2和DCs;DCs/HepG2活化的CTL对HepG2具有显著杀伤作用,其杀伤率为(63.5±4.6)%(效靶比例为20∶1).结论HCC患者外周血DC融合HepG2细胞可有效诱导同源T淋巴细胞产生特异性抗HCC免疫效应,可能成为HCC免疫治疗的有效途径.     

可诱导共刺激分子及其配体与系统性红斑狼疮的研究进展

可诱导共刺激分子(ICOS)及其配体可诱导共刺激分子配体(ICOSL)是CD28/B7家族第三个成员,在系统性红斑狼疮的发生发展中发挥重要作用。近些年,ICOS/ICOSL在SLE的治疗方面的研究逐年深入,为临床SLE治疗提供了新思路。本文主要就ICOS/ICOSL与SLE关系进行概述。     

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…