Notch1信号参与脂多糖诱导的巨噬细胞活化

[目的]探讨Notch1对脂多糖(LPS)介导巨噬细胞活化的影响.[方法]体外培养RAW264.7细胞,给予LPS 100μg/L处理8h后利用RT-PCR方法检测RAW264.7细胞Notch1和Hes1 mRNA表达水平;给予Notch1信号抑制剂DAPT10μmol/L预处理1 h后利用ELISA法检测细胞上清液中肿瘤坏死因子α(TNF-α)及白细胞介素(IL)-6水平,采用Western blot法检测细胞TNF-α和IL-6蛋白表达水平.[结果]给予LPS刺激RAW264.7细胞后可明显提高Notch1和Hes1 mRNA表达(P<0.05),LPS提高RAW264.7细胞TNF-α和IL-6的表达和释放作用可明显被DAPT抑制(P<0.05),但TNF-α和IL-6表达水平仍显著高于对照组(P<0.05).[结论]巨噬细胞中Notch1信号参与LPS诱导细胞因子TNF-α和IL-6的表达和释放过程.     

芒果苷对脂多糖诱导小鼠成骨细胞凋亡的影响及机制研究

目的 探究芒果苷对脂多糖诱导小鼠成骨细胞凋亡的影响及可能机制.方法 将小鼠成骨细胞株MC3T3-E1细胞分为对照组、LPS组和LPS+芒果苷组,分别加入PBS缓冲液、脂多糖(LPS)、LPS+芒果苷.采用MTT法检测不同处理因素下各组成骨细胞的细胞存活率;qRT-PCR法检测各组细胞炎症因子TNF-α及细胞凋亡相关因子Bax、Bcl-2和Caspase-3基因mRNA的表达.结果 与对照组相比,LPS组MC3T3-E1细胞存活率明显降低,TNF-α、Bax和Caspase-3的mRNA表达明显升高,Bcl-2 mRNA表达明显下降;而与LPS组相比,LPS+芒果苷组MC3T3-E1细胞存活率明显提高,TNF-α、Bax、Caspase-3 mRNA表达明显下降,Bcl-2 mRNA基因表达明显升高,各组间差异均有统计学意义(P<0.05).结论 芒果苷可改善LPS导致的成骨细胞凋亡,其作用机制可能与芒果苷抑制LPS诱导的TNF-α形成及调节细胞内Bax、Bcl-2、Caspase-3产生有关.     

阻断Notch信号通路抑制骨肉瘤MG-63细胞增殖的实验研究

目的 探讨γ-分泌酶抑制剂DAPT阻断Notch信号通路对骨肉瘤MG-63细胞系增殖和凋亡的影响及其机制.方法 体外培养骨肉瘤MG-63细胞株;MTT法检测不同浓度DAPT(1.0、5.0、10.0 μmol/L)对骨肉瘤MG-63细胞增殖的抑制作用;透射电镜下观察不同浓度DAPT对骨肉瘤MG-63细胞形态的影响;流式细胞术结合AnnexinV-FITC/PI双染分析不同浓度DAPT对骨肉瘤MG-63细胞凋亡的影响;RT-PCR法检测骨肉瘤MG-63细胞Notch1、HES1基因表达.结果 不同浓度的DAPT作用于骨肉瘤MG-63细胞后,细胞增殖水平明显下降(P＜0.05),1.0μmol/L DAPT即抑制细胞生长,随着DAPT浓度增加抑制效果明显增强,呈显著的浓度依赖关系,且随着DAPT作用时间延长,抑制效果也明显增强.细胞凋亡结果分析表明,DAPT能浓度依赖性地诱导骨肉瘤MG-63细胞发生凋亡.RT-PCR显示随着DAPT量的增加,Notch 1、HES 1 mRNA的表达逐渐下降(均P＜0.05).结论 DAPT对骨肉瘤MG-63细胞抑制增殖和诱导凋亡的作用可能与下调MG-63细胞中Notch 1、HES 1 mRNA的表达有关.     

吲达帕胺对脂多糖诱导新生大鼠心肌细胞损伤后TNF-α表达的影响

目的 探讨吲达帕胺对脂多糖(LPS)诱导乳鼠心肌损伤后TNF-α表达的影响.方法 取SD新生大鼠(1～3 d)45只,分离心肌细胞培养,在培养的第4天按随机数字表法分为3组;正常对照组(对照组,行常规培养)、LPS组(加入LPS 1 mg·L-1,处理6 h)、吲达帕胺+LPS组(吲达帕胺组;加入吲达帕胺0.01 mg-1、处理12 h,LPS 1mg-1、处理6 h)),每组15只.分别采用MTT、RT-PCR、Westem Blotting法检测心肌细胞存活率、TNF-αmRNA、TNf-α蛋白的表达.结果 细胞存活率:LPS组较对照组明显减少(P＜0.01);吲达帕胺组较LPS组明显增高(P＜0.01),与对照组相比差异无统计学意义(P＞0.05).TNF-α mRNA的表达:LPS组较对照组明显增加(P＜0.01);吲达帕胺组较LPS组明显降低(P＜0.01),而较对照组差异无统计学意义(P＞0.05).TNF-α蛋白的表达:LPS组较对照组明显增加(P＜0.01);吲达帕胺组较LPS组明显减少(P＜0.01),而较对照组差异无统计学意义(P＞0.05).结论 吲达帕胺可下调LPS诱导的心肌细胞损伤后TNF-α的表达,减少心肌损伤.     

替米沙坦对脂多糖诱导3T3-L1脂肪细胞生成炎性因子的影响

目的探讨血管紧张素Ⅱ受体拮抗剂替米沙坦对小鼠3T3-L1脂肪细胞合成白细胞介素6（IL-6）和肿瘤坏死因子α（TNF-α）的影响。方法脂肪细胞诱导至90%成熟,随机分为5组：对照组,脂多糖（LPS）组,LPS＋替米沙坦组,其中替米沙坦设0.1μg/ml、1μg/ml和10μg/ml 3个浓度梯度。对照组中加DMSO,LPS＋替米沙坦组中加不同浓度替米沙坦,孵育2h后,再向LPS组和LPS＋替米沙坦组加入LPS（1μg/ml）,与替米沙坦共同孵育细胞1h。酶联免疫吸附法（ELISA）检测各组IL-6和TNF-α的蛋白分泌水平,Q-PCR检测各组IL-6和TNF-αmRNA基因表达。结果脂多糖处理后IL-6分泌较对照组增加约2.7倍,IL-6mRNA表达增加4倍。替米沙坦干预后各组IL-6浓度较脂多糖组均明显下降,10μg/ml组降低67%,IL-6mRNA表达随替米沙坦浓度升高而下降,10μg/ml组下降约63%。此外,与对照组相比,脂多糖处理组TNF-α分泌增加1.3倍,其mRNA表达增加3.5倍,替米沙坦干预后,各组TNF-α蛋白分泌及mRNA表达均较脂多糖组明显降低,大剂量替米沙坦干预后（10μg/ml）,TNF-α蛋白分泌下降约85%,mRNA表达下降约23%。结论替米沙坦通过影响脂肪细胞炎性因子的产生发挥抗炎作用,10μg/ml大剂量时作用尤为明显。     

Notch1在TGF-β1诱导心肌成纤维细胞向肌成纤维细胞转化中的作用

目的：研究转化生长因子β1（TGF-β1）诱导心肌成纤维细胞（CFs）向肌成纤维细胞（MFB）转分化过程中Notch1的变化情况,探讨在此转分化过程中Notch1的可能作用.方法：体外分离培养CFs,以10μg/LTGF-β1诱导CFs向MFB转分化.实验分为对照组,TGF-β1作用24,48,72h组,采用消化法测定羟脯氨酸（HYP）含量;免疫荧光、免疫印迹法测定α-平滑肌肌动蛋白（α-SMA）表达;实时定量PCR、免疫印迹法测定Notch1 mRNA及蛋白表达.利用γ分泌酶抑制剂DAPT（75μmol/L）阻断Notch1受体活化.实验分对照组,DAPT作用24,48,72h组,检测SMA及胶原的表达变化.结果：TGF-β1作用后,与对照组相比较α-SMA,HYP表达量随TGF-β1诱导时间的增加呈上升趋势,而Notch1则呈下降趋势,均以72h最显著（P〈0.01）;加入DAPT后,与对照组相比较α-SMA,HYP表达量随DAPT作用时间增加呈上升趋势,以72h最显著（P〈0.01）.结论：TGF-β1可以诱导CFs向MFB转分化,Notch1在此过程中的表达呈下降趋势,而DAPT阻断Notch1活化后可以促进CFs向MFB转分化.     

地塞米松和辛伐他汀对成骨细胞增殖分化的影响

目的:研究地塞米松和辛伐他汀对成骨细胞增殖分化的影响.方法:从新生SD大鼠颅盖骨分离培养成骨细胞,随机分为3组培养,A组加入1×10-7 mol/L的地塞米松、1×10-7 mol/L的辛伐他汀和二甲基亚砜(DMSO,终浓度为1 g/L);B组加入1×10-7 mol/L的地塞米松和与A组等量的DMSO;C组只加入与A组等量的DMSO作为对照.96 h后,以RT-PCR一步法分析成骨细胞骨钙素mRNA的表达;采用MTT法测定成骨细胞增殖率.结果:A、C组成骨细胞骨钙素mRNA表达量及细胞增殖率均高于B组(P＜0.01),A与C组比较差异无统计学意义(P＞0.05).结论:辛伐他汀可对抗地塞米松对成骨细胞增殖和分化的抑制作用.     

γ-分泌酶抑制剂DAPT抑制人宫颈癌HeLa细胞的增殖

目的探讨γ-分泌酶抑制剂DAPT对人宫颈癌HeLa细胞体外增殖的抑制作用及相关机制。方法MTT法检测不同浓度DAPT对HeLa细胞的增殖抑制作用;RT-PCR法检测HeLa细胞Notch1、HES1基因表达情况。结果不同浓度的DAPT作用于HeLa细胞后,细胞增殖水平明显下降（P〈0.05或P〈0.01）,且DAPT对HeLa细胞增殖的抑制作用呈剂量依赖性。随着DAPT浓度的增加,Notch1、HES1 mRNA的表达逐渐下调。结论DAPT能够抑制HeLa细胞的增殖,可能与HeLa细胞中Notch1、HES1 mRNA的下调有关。     

γ-分泌酶抑制剂DAPT抑制人宫颈癌HeLa细胞的增殖

目的探讨γ-分泌酶抑制剂DAPT对人宫颈癌HeLa细胞体外增殖的抑制作用及相关机制。方法MTT法检测不同浓度DAPT对HeLa细胞的增殖抑制作用;RT-PCR法检测HeLa细胞Notch1、HES1基因表达情况。结果不同浓度的DAPT作用于HeLa细胞后,细胞增殖水平明显下降（P〈0.05或P〈0.01）,且DAPT对HeLa细胞增殖的抑制作用呈剂量依赖性。随着DAPT浓度的增加,Notch1、HES1 mRNA的表达逐渐下调。结论DAPT能够抑制HeLa细胞的增殖,可能与HeLa细胞中Notch1、HES1 mRNA的下调有关。     

替米沙坦对脂多糖诱导3T3-L1脂肪细胞炎症通路的影响

目的 研究替米沙坦对脂多糖诱导3T1-L1脂肪细胞炎症通路的影响,探讨替米沙坦的抗炎机制.方法将3T3-L1脂肪细胞诱导至90%成熟,按随机数字表法分为6组:对照组、LPS组、LPS+替米沙坦(0.01、0.1、1和10μg/ml)组(n=18),向对照组细胞中加DMSO,LPS+替米沙坦组细胞中加入不同浓度替米沙坦,孵育2h后,LPS组和LPS+替米沙坦组再加入脂多糖(1 μg/ml),孵育1h,Western免疫印记法比较各组核蛋白NF-κBp65、总蛋白p-IκBα、IκBα、p-ERK1/2、ERK1/2、P-p38MAPK、p38 MAPK的表达水平.结果 脂多糖刺激后IκBα磷酸化蛋白表达增强(P＜0.05),细胞核内NF-κBp65蛋白表达增多(P＜0.05),MAPK通路相关蛋白ERK1/2磷酸化和p38MAPK磷酸化水平明显增强(P＜0.05),替米沙坦可抑制IκBα磷酸化和NF-κBp65核转位,p-IκBα蛋白表达和核蛋白NF-κBp65表达均降低,大剂量替米沙坦(10 μg/ml)作用时该作用明显(P＜0.05).替米沙坦干预后,p-ERK1/2和p-p38MAPK蛋白表达也受到明显抑制(P＜0.05),大剂量(10μg/ml)时作用明显(P＜0.05).结论 在3T3-L1脂肪细胞中,替米沙坦可以抑制NF-κB通路中IκBα蛋白磷酸化、NF-κBp65蛋白核转位以及MAPK通路中ERK1/2蛋白和p38MAPK蛋白的磷酸化,从而发挥抗炎作用.     

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…