金雀异黄素抑制氯化钴诱导的人视网膜色素上皮细胞缺氧诱导因子1α表达的研究

目的：研究氯化钴(CoCl2)诱导体外培养的人视网膜色素上皮(RPE)细胞缺氧诱导因子1α(HIF-1α)的表达以及金雀异黄素(Gen)对其表达的影响。方法：采用免疫组化和激光共聚焦显微镜研究HIF-1α的表达。结果：CoCl2可明显诱导人RPE细胞HIF-lα的表达，0．5h达高峰，随后逐渐下降。Gen可呈浓度依赖性地抑制氯化钴诱导的HIF-1α蛋白表达。结论：Gen可抑制CoCl2诱导的人RPE细胞HIF-1α蛋白表达。     

金雀异黄素对缺氧诱导的人ARPE-19细胞VEGF表达的抑制作用

目的:研究长期缺氧对体外培养的人ARPE鄄19细胞血管内皮生长因子(VEGF)表达的诱导作用,以及金雀异黄素(genistein,Gen)对其表达的影响初步研究。方法:使用半定量RT鄄PCR和酶联免疫吸附试验(ELISA)检测ARPE鄄19细胞中VEGFmRNA和蛋白的表达,分析不同浓度Gen以及PD98059、TyrphostinA25对ARPE鄄19细胞缺氧24h诱导的VEGF表达的影响。结果:①正常对照组有少量VEGF表达,缺氧24h可明显提高ARPE鄄19细胞VEGFmRNA和蛋白的表达,分别为9.566±1.528和2.636±0.499倍;②Gen可明显抑制缺氧诱导ARPE鄄19细胞中VEGFmRNA和蛋白的表达,且呈浓度依赖性(P<0.05);③PD98059、TyrphostinA25也可抑制低氧诱导的VEGF的产生,但抑制作用没有Gen(200μmol/L组)明显。结论:Gen可抑制长期缺氧诱导的ARPE鄄19细胞VEGF表达,并可能是通过抑制p42/p44MAPK途径和HIF鄄1途径共同抑制VEGF的产生,提示Gen对视网膜新生血管的形成具有预防和潜在的临床治疗价值。     

高糖联合低氧对体外培养的人视网膜色素上皮细胞HIF-1ɑ及VEGF表达的影响

目的探讨高糖及高糖联合低氧对体外培养的人视网膜色素上皮(retinal pigment epithelial,RPE)细胞低氧诱导因子1α(hypoxia-inducible factor-lα,HIF-1α)及血管内皮生长因子(vascular endothelial growth factor,VEGF)表达的影响。方法通过使用化学低氧诱导剂CoCl2模拟RPE细胞低氧环境,研究RPE细胞分别在5.56 mmol/L葡萄糖(对照组)5、.56 mmol/L葡萄糖 150μmol/L CoCl2(低氧组)、25 mmol/L葡萄糖(高糖组)以及25 mmol/L葡萄糖 150μmol/L CoCl2(联合组)的培养条件下,通过反转录PCR检测HIF-1α及VEGF mRNA的表达,Western blot分析检测HIF-1α及VEGF蛋白水平。结果与对照组比较,高糖组RPE细胞HIF-1αmRNA表达无显著性差异,而高糖组可检测出微量的HIF-1α蛋白,对照组未能检测出HIF-1α蛋白;且高糖组VEGF mRNA表达和蛋白合成均增加(均P<0.05)。与低氧组比较,联合组RPE细胞HIF-1αmRNA表达无显著性差异,但HIF-1α蛋白水平明显高于低氧组(P<0.05);同时VEGF mRNA表达和蛋白合成也均明显增加(均P<0.05)。结论高糖对体外培养的人RPE细胞HIF-1α的影响是促进蛋白的合成,且对HIF-1α蛋白有一定的稳定作用,在联合低氧条件下高糖促进合成的HIF-1α蛋白更加稳定,同时也促进VEGF的表达增加。     

高糖联合低氧对体外培养的人视网膜色素上皮细胞HIF-1α及VEGF表达的影响

目的探讨高糖及高糖联合低氧对体外培养的人视网膜色素上皮（retinal pigment epithelial，RPE）细胞低氧诱导因子1α（hypoxia—inducible factor-1α，HIF-1α）及血管内皮生长因子（vascular endothelial growth factor，VEGF）表达的影响。方法通过使用化学低氧诱导剂CoCl2模拟RPE细胞低氧环境，研究RPE细胞分别在5．56mmol／L葡萄糖（对照组）、5．56mmol／L葡萄糖＋150μmol／L CoCl2（低氧组）、25mmol／L葡萄糖（高糖组）以及25mmol／L葡萄糖＋150μmol／L CoCl2（联合组）的培养条件下，通过反转录PCR检测HIF-1α及VEGF mRNA的表达，Western blot分析检测HIF-1α及VEGF蛋白水平。结果与对照组比较，高糖组RPE细胞HIF-1α mRNA表达无显著性差异，而高糖组可检测出微量的HIF-1α蛋白，对照组未能检测出HIF-1α蛋白；且高糖组VEGF mRNA表达和蛋白合成均增加（均P〈0．05）。与低氧组比较，联合组RPE细胞HIF-1α mRNA表达无显著性差异，但HIF-1α蛋白水平明显高于低氧组（P〈0．05）；同时VEGF mRNA表达和蛋白合成也均明显增加（均P〈0．05）。结论高糖对体外培养的人RPE细胞HIF-1α的影响是促进蛋白的合成，且对HIF-1α蛋白有一定的稳定作用，在联合低氧条件下高糖促进合成的HIF-1α蛋白更加稳定，同时也促进VEGF的表达增加。     

尼美舒利对氯化钴诱导的BGC-823细胞HIF-1α及VEGF表达的影响

目的：研究选择性COX-2抑制剂尼美舒利对低氧模拟剂氯化钴诱导的胃癌细胞株BGC-823 HIF-1α、VEGF表达的影响。方法：分别应用150μmol／L氯化钴单独或联合10μmol／L、40μmol／L、80μmol／L的尼美舒利作用于BGC-823细胞24h，收集细胞，应用RT-PCR和Western blot技术检测HIF-1α及VEGF的表达。以胎牛血清加RPMI1640培养基培养细胞作正常对照。结果：与正常对照组比较，150μmol／L氯化钴刺激24h，可显著提高细胞HIF-1α蛋白、VEGF mRNA和蛋白的表达（P〈0．01），但对HIF-1α mRNA表达无影响。与氯化钴单独作用比较，尼美舒利和氯化钴联合作用24h，细胞HIF-1α蛋白、VEGF mRNA和蛋白表达降低（P〈0．01），并呈剂量依赖性，但对HIF-1α mRNA表达无影响。结论：COX-2抑制剂尼美舒利可抑制氯化钴诱导的HIF-1α、VEGF表达，这可能是其抗肿瘤血管生成的机制之一。     

尼美舒利对氯化钴诱导的BGC-823细胞HIF-1α及VEGF表达的影响

目的:研究选择性COX-2抑制剂尼美舒利对低氧模拟剂氯化钴诱导的胃癌细胞株BGC-823 HIF-1α、VEGF表达的影响.方法:分别应用150μmol/L氯化钴单独或联合10μmol/L、40 μmol/L、80μmol/L的尼美舒利作用于BGC-823细胞24 h,收集细胞,应用RT-PCR和Western blot技术检测HIF-1 α及VEGF的表达.以胎牛血清加RPMI 1640培养基培养细胞作正常对照.结果:与正常对照组比较,150μmol/L氯化钴刺激24 h,可显著提高细胞HIF-1 α蛋白、VEGF mRNA和蛋白的表达(P＜0.01),但对HIF-1α mRNA表达无影响.与氯化钴单独作用比较,尼美舒利和氯化钴联合作用24 h,细胞HIF-1 α蛋白、VEGF mRNA和蛋白表达降低(P＜0.01),并呈剂量依赖性,但对HIF-1α mRNA表达无影响.结论:COX-2抑制剂尼美舒利可抑制氯化钴诱导的HIF-1α、VEGF表达,这可能是其抗肿瘤血管生成的机制之一.     

金雀异黄素抑制缺氧人视网膜色素上皮细胞VEGF表达机制的初步研究

目的:进一步明确金雀异黄素(Gen)抑制缺氧人视网膜色素上皮细胞(RPE)血管内皮生长因子(VEGF)表达的机制。方法:以体外正常情况为对照,建立人RPE缺氧模型并经不同浓度Gen干预后,通过RT-PCR检测VEGF及其转录调节因子c-fos、c-jun、缺氧诱导因子(HIF)-1α、HIF-2α、HIF-3αmRNA的表达水平,了解Gen是否通过对VEGF的转录因子活性调节而影响VEGF的表达。结果:缺氧能使人RPE细胞的VEGF、c-fos、c-jun及HIF-2α、HIF-3αmRNA水平增高,对HIF-1α无影响;Gen能抑制缺氧诱导的VEGF表达;在所检测的VEGF转录因子中,Gen只对HIF-2α的转录有抑制作用。结论:Gen抑制VEGF表达的作用部分是通过抑制其转录调节因子HIF-2α转录实现的。     

丙戊酸对人卵巢A2780细胞增殖及血管生成和转移相关因子表达的影响

目的 研究丙戊酸(VPA)对人卵巢癌A2780细胞生长、血管生成和转移相关因子表达的影响.方法 用不同浓度的VPA处理体外培养的人卵巢癌A2780细胞,采用MTT比色法、流式细胞仪和免疫组织化学检测细胞生长和凋亡、血管内皮生长因子(VEGF)和基质金属蛋白酶-9(MMP-9)蛋白的表达变化.结果 经VPA处理后,A2780细胞的细胞形态发生明显变化,细胞生长能力降低,并呈现浓度和时间依赖性,VEGF和MMP-9蛋白表达均降低.结论 VPA可以抑制卵巢癌A2780细胞生长,并诱导人卵巢癌细胞凋亡,下调VEGF和MMP-9蛋白表达.VEGF和MMP-9蛋白表达下调提示VPA可能有抑制肿瘤血管生成和转移作用.     

低氧培养的肝癌细胞中低氧诱导因子1的表达与血管生成和细胞凋亡相关蛋白的关系

目的:观察低氧诱导因子1α(hypoxia inducible factor-1α,HIF-1α)在低氧培养的肝癌细胞中的表达变化,并初步探讨其与血管生成和细胞凋亡的关系.方法:将终浓度为125 μmol/L的氯化钴加入HepG2肝癌细胞培养液中模拟低氧环境,并设培养不同时间(0、1、2、4、6、8 h)组.(1)采用RT-PCR技术检测低氧培养不同时间的肝癌细胞中HIF-1α、VEGF、Caspase-3、bcl-2和bax mRNA的表达;(2)应用Western印迹方法及酶标免疫测量仪分别检测了各培养组细胞Caspase-3蛋白表达及Caspase-3酶活性.结果:(1)HepG2细胞在低氧培养1～2 h后,其HIF-1α、VEGF、bcl-2 mRNA的表达逐渐增加,在4 h达到高峰,随后下降,但仍高于低氧处理前水平;而bax mRNA表达无明显变化,bcl-2/bax比值与上述变化趋势一致.(2)Caspase-3 mRNA及蛋白的表达及酶活性变化趋势与HIF-1α正好相反.结论:HIF-1α可能通过调节VEGF、bcl-2、bax和Caspase-3的表达而抑制肝癌细胞凋亡,且这种抑制作用与缺氧程度有关.     

低氧状态下血管内皮细胞HIF-1α表达及与细胞凋亡的关系

目的探讨低氧对人脐静脉内皮细胞ECV304凋亡及低氧诱导因子-1α表达的影响及意义。方法人脐静脉内皮ECV304细胞分为低氧处理组和对照组,处理后MTT法检测细胞增殖抑制率;流式细胞术和TUNEL染色检测细胞凋亡;应用荧光实时定量PCR(QPCR)和Western blot检测Bcl-2、Bax、Caspase-3和HIF-1α的mRNA和蛋白表达。结果与对照组比较,低氧处理能明显抑制细胞的增殖,且抑制作用随着低氧处理时间的延长而增强(P<0.05);低氧处理细胞后凋亡率明显增加,且呈时间依赖性(P<0.05);QPCR和Western blot结果显示,低氧处理组细胞Caspase-3、Bax的mRNA和蛋白表达均显著升高(P<0.05),Bcl-2则明显下降(P<0.05),Bcl-2/Bax比值显著降低,且呈时间依赖性(P<0.05)。低氧呈时间依赖性上调HIF-1α的mRNA和蛋白水平(P<0.05)。结论低氧能促进人脐静脉内皮细胞ECV304细胞凋亡,其机制可能与HIF-1α表达上调及Bcl-2的表达降低、Caspase-3和Bax的表达升高有关。     

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.     

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…