大鼠乳鼠颌下腺成纤维细胞的分离培养及鉴定

探讨大鼠乳鼠颌下腺成纤维细胞体外分离及培养的方法.采用0.125％胰酶多次消化法收集新生SD大鼠乳鼠颌下腺成纤维细胞.高内涵细胞成像法检测细胞增殖能力,免疫荧光、Western blot和RT-PCR法检测波形蛋白表达水平,CD90标记成纤维细胞、鉴定细胞纯度.最新消化分离得到的细胞呈亮球形,轮廓清晰,单个散在或聚集成团分布,90 min后即有大量细胞贴壁,其中部分细胞已开始伸展.5～6 d可形成单层细胞,传代后的细胞呈长纺锤形或多边形.波形蛋白表达呈强阳性.传代3代的细胞培养体系中成纤维细胞约占87％.含5％FBS的DMEM/F12培养基培养24 h即可检测到细胞的大量增殖.胰酶消化法是获得大鼠乳鼠颌下腺成纤维细胞的有效方法.     

优化贴壁法人皮肤成纤维细胞的原代培养

目的:优化贴壁法原代培养人皮肤成纤维细胞的条件,建立稳定?经济?高效可行的人皮肤成纤维细胞培养方法?方法:采用包皮环切术后皮肤组织,剪成均匀组织块后贴壁,皮肤边缘长出薄层致密细胞团后胰酶消化?传代,并对所培养的细胞进行形态学观察及细胞免疫荧光鉴定?此方法与酶消化法相对照?结果:优化贴壁法成功率100%,取得组织后2 d沿皮肤边缘均开始生长高密度类圆形细胞层,在1周内可获得高质量?高数量的细胞,传代贴壁后经镜下形态观察及细胞免疫荧光染色确定为皮肤成纤维细胞?结论:较之酶消化法,优化贴壁法细胞存活率高,活性及纯度好?该方法可稳定?经济地获得足够数量的细胞?     

大鼠乳鼠皮肤成纤维细胞的分离和体外培养

目的建立大鼠乳鼠背部皮肤组织和尾尖部皮肤组织成纤维细胞的体外培养方法,并比较二者的区别。方法分别取大鼠乳鼠的背部和尾尖部皮肤组织,利用组织贴块法分离和培养皮肤成纤维细胞,用酶消化法进行细胞传代培养,采用梯度温度冻存细胞。倒置显微镜下观察成纤维细胞的形态,用细胞骨架波形蛋白抗体进行鉴定。结果光学显微镜下3~5 d可见细胞从组织块游出,7 d细胞数量增多,10 d可贴满培养瓶壁;且大鼠乳鼠背部和尾尖部来源的皮肤成纤维细胞波形蛋白表达均为阳性。结论大鼠乳鼠背部和尾尖部来源的皮肤成纤维细胞的生物特点无差别,均可作为皮肤成纤维细胞的取材部位。     

大鼠胸主动脉外膜成纤维细胞的培养方法初探

目的：建立大鼠胸主动脉外膜成纤维细胞组织贴块法培养模型。方法：分离大鼠胸主动脉外膜,切成1 mm×1 mm×1 mm大小组织块,均匀贴于细胞培养瓶壁上,加入含20%血清的细胞培养液DMEM,置入细胞培养箱于37℃,5%CO2条件下传代培养。结果：第3～4 d,少量细胞从组织块周边游出,第6～8 d后,细胞围绕组织块生长至亚融合状态,0.25%胰酶消化后传代,可得到较纯成纤维细胞。结论：利用组织贴块法培养大鼠胸主动脉外膜成纤维细胞存活率高,操作简单,结果稳定,在血管重塑、血管纤维化、细胞凋亡、细胞表型转变等研究领域具有应用价值。     

东方田鼠胚胎成纤维细胞的分离培养及生物学特性

目的 对影响东方田鼠胚胎成纤维细胞(MfEF)分离和培养的因素进行探索,并观察其生物学特性.方法 取室内繁殖饲养不同胎龄的东方田鼠胚胎分离成纤维细胞,通过原代和继代培养,分析比较不同胎龄、不同血清浓度、不同胰蛋白酶浓度等因素对MfEF分离及培养的影响,观察MfEF的生长形态及其生物学特性.结果 MfEF为贴壁型生长,细胞形态多样,呈梭形、不规则多边形;采用0.125%的胰蛋白酶室温消化12～13 d胚胎组织5 min,以DMEM培养基添加15%小牛血清分离培养MfEF的效果最佳;MfEF2～7代增殖最旺盛.结论 获得了实验室分离、培养MfEF的有效方法,为进一步深入研究东方田鼠抗日本血吸虫机制以及开展不同动物成纤维细胞间比较研究奠定了基础.     

新生大鼠成纤维细胞原代培养

目的探讨新生sD大鼠成纤维细胞的培养方法。方法采用胰酶消化法和组织块贴壁法原代培养成纤堆细胞。采用HE染色及波形蛋白（Vimentin）免疫细胞化学染色对培养细胞进行鉴定。结果两种方法均能培养出成纤维细胞,其中酶消化法一次性可获得较多细胞,但细胞状态较差,贴壁慢,生长慢;组织块贴壁法短时间内可长出大量成纤维细胞,一周即可传代。HE染色后倒置相差显微镜下观察细胞形态典型,免疫细胞化学染色结果显示Vimentin呈阳性反应。结论组织块贴壁培养法是获取成纤维细胞简单,可行,快速的方法。     

不同消化方法对心肌成纤维细胞体外培养影响

目的对比不同消化方法对原代乳鼠心肌成纤维细胞体外培养的影响,探求更高效的细胞分离、培养方法。方法改良既往文献报道的心肌成纤维细胞分离方法,选用胶原酶、胰酶、胶原酶加胰酶消化液分别对同等数量随机挑选的同窝出生1～2 d的SD乳鼠进行心肌成纤维细胞分离,从细胞数量及活性、细胞增殖、细胞纯度及对中药、西药反应灵敏度等方面对分离出的第0代(P0)细胞及传代至第2代(P2)的细胞进行比较。结果胶原酶消化法分离所得细胞在数量、成活率、贴壁速度、增殖速度方面,明显优于胰酶消化法或胶原酶加胰酶消化法,P0.05,差异有统计学意义;在形态学上并无明显差异,且细胞纯度均可达到95%;胶原酶消化法所得细胞对中药、西药灵敏度较高,P0.05,差异有统计学意义。结论选用胶原酶作为原代乳鼠心肌成纤维细胞的消化酶,运用时间梯度消化细胞,可以高效得到数量多、活性好、纯度高、对药物反应灵敏的细胞。     

小鼠胚芽干细胞的分离与培养

目的：探讨胚芽干细胞的提取、培养和体外扩增的最佳条件；筛选胚芽干细胞在体外培养中的活力最佳时期。方法：分离受精11d小鼠生殖腺嵴，经消化制备成胚芽干细胞悬液，将细胞分别接种于基础培养液、同种胎鼠成纤维细胞条件培养液、添加LIF的基础培养液、有饲养层的培养基和与胎鼠成纤维细胞共培养5种不同的培养体系中，比较观察在5种培养体系中胚芽干细胞的形态学、碱性磷酸酶染色和体外分化情况。结果：①在含15％胎牛血清的DMEM／F12基础培养液中培养时，胚芽干细胞贴壁明显减少，EGC克隆形成很少，传代率很低；②在基础培养液中添加白血病抑制因子（LIF）或同种胎鼠成纤维细胞条件培养液时，细胞生长情况与基础培养液培养相比无明显差异；③有饲养层存在时，4～6d后出现鸟巢状胚芽千细胞集落。传4代后集落逐渐减少、变小。6～7代后集落消失；④与胎鼠成纤维细胞共培养时，2～4d即可见EGC集落形成。传6代后细胞的集落逐渐减少、变小；⑤在与胎鼠成纤维细胞共培养时，第2、3代细胞的生长曲线基本相同，接种24h后细胞呈对数生长。培养液的更新可以显著影响小鼠胚芽干细胞的生长。第5代的细胞增殖速度减慢。结论：与饲养层细胞或腹壁组织成纤维细胞共培养可较好地培养和扩增胚芽干细胞；第3代细胞的活力最好。     

人皮肤角质形成细胞和成纤维细胞的原代培养和鉴定的实验研究

目的建立人皮肤角质形成细胞(keratinocyte)成纤维细胞(fibmblast)原代培养和体外连续培养的模型，为组织工程化皮肤提供充足的种子细胞。方法以5-15岁小儿包皮为材料，胰蛋白酶消化后，分离两种细胞，分别用无血清表皮培养液(K-SFM)、DMEM(10％血清)培养，对年轻细胞(2-4代角质形成细胞，10-40代成纤维细胞)均用倒置显微镜进行大体观察，透射电镜进行超微结构观察，并拍照记录，同时进行免疫细胞化学鉴定。结果消化后得到大量细胞，在培养2周后开始传代，光镜下角质形成细胞呈典型铺路石状，透射电镜下呈多边形，符合角质形成细胞特征；成纤维细胞光镜下呈梭形，放射状或漩涡状排列，电镜证实是成纤维细胞。免疫细胞化学检测：角质形成细胞鼠抗人角蛋白(AE1／AE3)单克隆抗体(mouse anti-cytokeratin)染色阳性；成纤维细胞鼠抗人Ⅰ型，Ⅲ型胶原单克隆抗体(mouse anti-TypeⅠ，ⅢCollagen)和鼠抗人波形蛋白单克隆抗体(mouse anti-vim-entin)染色阳性。结论用简便易行，经济实用的方法在体外对角质形成细胞和成纤维细胞进行分离、培养和传代，能同时得到足够数量的组织工程皮肤的种子细胞。     

兔角膜缘干细胞的体外培养和生物学特性观察

目的 探讨兔角膜缘干细胞的体外培养方法并观察其生物学特性。方法 采用消化培养法，分2组培养，1组为消化并过滤后的角膜缘干细胞培养组，另1组为消化后未过滤的带组织块培养组，均用含20％胎牛血清的培养液培养，待细胞长成良好单层后消化传代，分别观察记录细胞在原代和传代培养时的生长特性并行HE染色观察。结果 过滤组角膜缘干细胞在培养24h后开始贴壁生长，7～10d形成良好单层，细胞以圆形或椭圆形为主，核较大，呈原始细胞特征，传代培养时见细胞体积逐渐增大，核变小，成纤维细胞少见；带组织块培养组原代培养时与过滤组无明显差异，传代时则见成纤维细胞渐增多，至第3代时占主导并抑制了角膜缘干细胞的生长。结论 采用消化培养法可成功培养出兔角膜缘干细胞，培养时应滤除组织块以减少成纤维细胞的影响。     

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…