细胞外液成分对耐钙心肌细胞急性分离及电生理记录的影响

目的 探讨细胞外液成分对获取适于电生理研究的耐钙心室肌细胞及对L-型钙通道电流(ICa-L)、延迟整流钾电流(IK)记录的影响. 方法 家兔心室肌细胞急性分离采用Langendorff灌流装置及酶解分离技术,心脏灌流前实验组细胞外液为正常台氏液,对照组细胞外液为无钙台氏液,观察细胞外液中的钙离子对获取适于电生理记录的单个耐钙心肌细胞的影响;应用全细胞膜片钳技术,实验组分别以含BaCl2的台氏液及N-甲基-D-葡萄糖胺(NMDG)溶液作为细胞外液记录ICa-L及IK,对照组为正常台氏液. 结果与对照组相比较,实验组心室肌细胞存活率和耐钙心肌细胞存活率均明显升高(71% ±9.7% vs 55% ±10% ;52%±7.9% vs 39%±11% ,n=10,P＜0.05);实验组引出的ICa-L峰值电流大于对照组,且幅值稳定;实验组IK时间依赖性外向电流及尾电流随去极化时间延长增大作用更明显(1.39±0.05 pA/pF vs 0.53±0.14 pA/pF; 0.74±0.09 pA/pF vs 0.39±0.13 pA/pF,n=10,P<0.05).结论 细胞外液中的钙离子有助于获取耐钙心肌细胞,以含BaCl2的台氏液及NMDG溶液作为细胞外液易于获得典型而稳定的ICa-L及IK.     

心力衰竭患者抗β1肾上腺素能受体自身抗体阳性血清对心肌细胞L-型钙通道的影响

目的探讨心力衰竭患者抗β1肾上腺素能受体自身抗体(Abs)阳性血清对豚鼠心室肌细胞膜上L型钙电流(IGa-L)的影响.方法应用全细胞钳制技术,定量观察并比较β1肾上腺素能受体激动剂异丙肾上腺素(Iso)和心力衰竭患者Abs阳性血清对豚鼠单个心室肌细胞的ICa-L电流强度的影响.结果β1肾上腺素能受体激动剂Iso可使基础ICa-L峰值电流强度和标准电流密度从(997.09±227.5)pA和(8.20±0.86)pA/pF增大到(2 241.01±348.5)pA和(18.98±1.18)pA/pF(P＜0.01),而β1肾上腺素能受体阻滞剂艾司洛尔(Esm)可以阻断这一作用.同样,心力衰竭患者Abs阳性血清可使基础ICa-L峰值电流强度从(963.57±207.56)pA增大到(1 382.41±241.36)pA,标准电流密度从(8.14±0.72)pA/pF增大到(11.70±1.03)pA/pF(P＜0.01),Esm也可阻断此作用.结论人类心脏Abs阳性血清对心肌细胞受体有异丙肾上腺素样激动剂效应,可能参与了心力衰竭时心肌细胞的病理生理过程.     

百合知母汤含药血清对大鼠卵巢颗粒细胞的保护作用

[目的]观察百合知母汤含药血清对氯化镉(CdCl2)致大鼠卵巢颗粒细胞(GC)损伤的影响.[方法](1)分别选用23 d、3月和12月龄雌性sD大鼠各5只,取卵巢进行GC计数,连续观察10 d内GC的生长情况,采用噻唑蓝(MTT)比色法于490 nm波长处测定光密度(D)值,筛选最适卵巢GC.(2)于最适卵巢GC体外培养的第3天加入终浓度分别为10、20、40、60、80μmol/L的CdCl2刺激液,37℃、体积分数5%CO2培养箱内培养48 h后,采用MTT法观察细胞生长情况,筛选CdCl2刺激液的最适浓度.(3)将筛选出最适的卵巢GC体外培养72 h后,在96孔板内分别加入最适浓度的CdCl2刺激液及终浓度分别为体积分数1.25%、2.5%、5%、10%、20%的大鼠百合知母汤含药血清,依据含药血清浓度由低至高分为5组,同时另设对照组:①空白对照组:体积分数10%DMEM培养液,②模型组:体积分数10%DMEM培养液+最适浓度CdCl2刺激液,③空白血清组:空白血清+最适浓度CdCl2刺激液.继续培养48 h后,采用MTT比色法测定D值,观察百合知母汤含药血清对大鼠卵巢GC以及对CdCl2致卵巢GC损伤后的影响.[结果]23 d龄大鼠卵巢GC数量多、形态好,呈指数生长,23 d为最适生长时间.CdCl2浓度与卵巢GC的活性呈剂量依赖性关系,随浓度增加而损伤加重,其中浓度为40 μmol/L CdCl2培养液中的GC细胞边缘出现皱缩,为最适CdCl2刺激液浓度.百合知母汤含药血清对卵巢GC生长有促进作用,能抵抗40 μmol/L CdCl2刺激液对GC的损伤作用.[结论]百合知母汤含药血清保护大鼠卵巢GC的作用与其能拮抗CdCl2的损伤和增加卵巢GC的活性和数量有关.     

兔心肌梗死后右心室肌细胞离子通道电流的变化

目的探讨心肌梗死后右心室肌细胞离子通道电流的变化.方法该研究采用结扎兔冠状动脉左前降支的方法建立心肌梗死动物模型,应用膜片钳全细胞记录方法,记录心肌梗死后2个月右心室心肌细胞钠通道电流(INa)、L-钙通道电流(ICa-L)、瞬间外向钾电流(Ico)的变化.结果心肌梗死后2个月,心肌梗死组INa电流密度峰值[(20.42±1 73)pA/pF,n=15]较对照组[(35 40±3.43)pA/pF,n=16]明显下降(P＜0.05);心肌梗死组ICa-L电流密度峰值[(5.71±0.93)pA/pF,n=12]与对照组[(6.28±1.03)pA/pF,n=10]略下降,但无明显差异(P＞0.05);心肌梗死组Ito电流密度( 60 nV时)[(8.61±0.95)pA/pF,n=16]较对照组[(14.38±1.24)pA/pF,n=17]明显下降(P＜0.05).结论心肌梗死可引起右心室肌细胞INa和Ito的下降,造成心肌传导速度下降和动作电位时程相对延长、复极异常,可能是导致心肌梗死后出现室性心律失常的离子机制.     

当归补血汤对氧化低密度脂蛋白激活RAW264.7细胞中核转录因子-κBp65 mRNA表达的影响

【目的】观察当归补血汤含药血清对氧化低密度脂蛋白(Ox-LDL)激活小鼠单核细胞系RAW264.7细胞中核转录因子-κBp65(NF-κBp65)mRNA表达的影响。【方法】将新西兰兔8只随机分为空白血清组和含药血清组,每组各4只,分别灌胃生理盐水和当归补血汤水煎液(剂量为8.4g·kg-1·d-1),分离血清。将RAW264.7细胞悬液接种于培养瓶中,培养24h,分为空白对照组、Ox-LDL组、PAR组(终浓度为10μmol/L的小菊白内酯)、体积分数10%的含药血清组。除空白对照组外,其他各组分别加入100μg/mLOx-LDL刺激4h,收集细胞。采用实时荧光定量PCR法检测各组细胞NF-κBp65 mRNA的表达量。【结果】Ox-LDL组与空白对照组比较,NF-κBp65 mRNA的表达量增加(P0.05);含药血清组与Ox-LDL组比较,NF-κBp65 mRNA的表达量减少(P0.05)。【结论】当归补血汤含药血清能下调NF-κBp65 mRNA的表达量,抑制、阻断NF-κBp65的表达可能是当归补血汤抗动脉粥样硬化的作用机制之一。     

血管紧张素Ⅱ及替米沙坦对大鼠心房肌细胞钾和钙电流的影响

目的研究血管紧张素Ⅱ(AngⅡ)和替米沙坦对SD大鼠心房肌细胞瞬时外向钾电流(Ito)和L型钙电流(ICa-L)的作用。方法急性酶解法分离SD大鼠心房肌细胞,采用全细胞膜片钳技术,观察AngⅡ、替米沙坦以及AngⅡ联合替米沙坦对大鼠心房肌细胞Ito和ICa-L的影响。结果 AngⅡ(0.1μmol/L)和替米沙坦(0.01μmol/L)以及两药联合均能抑制大鼠心房肌细胞Ito,AngⅡ组、替米沙坦组、联合组干预前后Ito的电流密度值比较差异有统计学意义[(22.48±2.75)vs(15.71±2.06)pA/pF,(24.16±2.36)vs(16.15±1.82)pA/pF,(24.41±2.27)vs(21.35±1.46)pA/pF,P<0.05]。AngⅡ(0.1μmol/L)能显著增强大鼠心房肌细胞ICa-L的峰值电流密度[(-4.51±0.38)vs(-5.16±0.29)pA/pF,P<0.01];替米沙坦(0.01μmol/L)对心房肌细胞ICa-L无明显作用[(-4.35±0.27)vs(-4.29±0.34)pA/pF,P>0.05],但联合组中替米沙坦可拮抗AngⅡ对ICa-L的增强效...     

蛇黄肝炎汤含药血清对人肝癌细胞HepG-2增殖的抑制作用

目的探讨蛇黄肝炎汤含药血清对人肝癌细胞HepG-2增殖的影响。方法 25只大鼠随机分为1倍、2倍、4倍浓度含药血清组,复方环磷酰胺含药血清组(阳性药物血清组),空白血清组5个实验药物组,分别将不同浓度的蛇黄肝炎汤含药血清、阳性药物含药血清、空白血清与HepG-2细胞共同培养,采用四甲基偶氮唑蓝(MTT)比色法及细胞集落形成实验观察蛇黄肝炎汤含药血清体外对HepG-2细胞增殖、克隆形成能力的影响。结果与空白血清组相比较,2、4倍的蛇黄肝炎汤含药血清组吸光度值(OD值)均降低,差异均有统计学意义(P0.05)。4倍含药血清随作用时间的延长,对HepG-2细胞的抑制率逐渐增加(P0.05),当4倍浓度含药血清抑制时间为72 h时,抑制率达76.82%,与阳性药物血清组作用相当(抑制率达77.71%)。不同浓度的含药血清均能有效降低肿瘤细胞集落形成,与空白血清组相比差异均有统计学意义(P0.05),且随着含药血清浓度增大细胞集落形成数逐渐降低,集落形成抑制率随含药血清浓度的增加呈逐渐升高的趋势。结论蛇黄肝炎汤含药血清具有抑制人肝癌细胞HepG-2体外增殖、降低其克隆形成能力作用。     

补阳还五汤含药血清对人脑微血管内皮细胞增殖和迁移的影响

目的观察不同浓度补阳还五汤(BYHWD)含药血清对人脑微血管内皮细胞(HBMECs)增殖和迁移影响。方法补阳还五汤灌胃SD大鼠后腹主动脉取血,制备含药血清;体外培养人脑微血管内皮细胞(HBMECs),随机分为空白组(正常大鼠血清)及补阳还五汤含药血清组,血清浓度分为5%、10%和20%3个浓度,共6组;四甲基偶氮唑蓝(MTT)法检测HBMECs增殖;细胞划痕法检测HBMECs迁移的相对距离。结果与空白组比较,5%、10%和20%含药血清均显著促进HBMECs增殖,差异有统计学意义(0.71±0.03比0.65±0.03、0.84±0.05比0.75±0.03、0.71±0.05比0.67±0.05,P0.05);与10%含药血清组比较,5%含药血清组和20%含药血清组细胞增殖显著减少,差异有统计学意义(0.71±0.03、0.71±0.05比0.84±0.05,P0.05)。与空白组比较,各含药血清组细胞迁移的相对距离均显著增加,差异有统计学意义(0.58±0.03比0.50±0.01、0.63±0.03比0.45±0.05、0.53±0.05比0.45±0.04,P0.05);与10%含药血清组比较,5%含药血清组和20%含药血清组细胞迁移的相对距离显著减小,差异有统计学意义(0.58±0.03、0.53±0.05比0.63±0.03,P0.05)。结论补阳还五汤含药血清可促进HBMECs增殖和迁移,10%含药血清作用最佳。     

异丙肾上腺素对乳鼠窦房结细胞自动节律和钠钙交换电流的影响

目的研究异丙肾上腺素(ISO)对乳鼠窦房结细胞自动节律和钠钙交换电流(INCX)的作用。方法选12只新生24h内Wistar大鼠乳鼠分离培养窦房结细胞,运用全细胞膜片钳技术记录动作电位(AP)和INCX电流。结果于细胞外加入ISO 1.0μmol/L后,AP的发生频率明显增加,从(147.9±9.9)min-1增加至(278±11.2)min-1。ISO可使+80mV起始时外向INCX密度从(0.52±0.03)pA/pF增加至(0.72±0.04)pA/pF(n=10,P<0.05),平均增加约36.7%;而-120mV时内向电流从(-3.26±0.02)pA/pF增加至(-7.81±0.06)pA/pF(n=10,P<0.01)。此效应呈现电压依赖性和浓度依赖性特征。结论乳鼠窦房结细胞INCX参与窦房结自动去极化,ISO可使其作用增加。     

下瘀血汤抑制肝癌细胞生长的研究*

目的：研究下瘀血汤对肝癌HepG2细胞生长的影响,并初步探讨其作用机制。方法：选取对数期生长阶段的HepG2细胞,分别加入不含药血清、10%含药血清、20%含药血清,通过CCK-8法检测下瘀血汤含药血清对Hep-G2细胞的增殖影响;通过流式细胞仪（FCM）检测下瘀血汤含药血清对Hep-G2细胞的凋亡和周期的影响;通过PCR及Western-blot检测下瘀血汤含药血清对核仁纺锤体相关蛋白1（nucleolar spindle-associated pretein 1,NuSAP1）的抑制作用。结果：通过CCK-8实验,发现10%、20%含药血清在48小时（P<0.05）及72小时（P<0.01）均能够明显抑制HepG2细胞的增殖;细胞周期实验发现,10%及20%含药血清能够抑制HepG2细胞的增殖,使细胞阻滞于S期及G2期,差异具有统计学意义（P<0.05）,且具有浓度依赖的特点（P<0.05）;流式细胞技术检测凋亡结果显示不同浓度含药血清均能够促进HepG2细胞的凋亡,并且具有浓度依赖性,差异有统计学意义（P<0.05）。通过PCR及Western-blot实验发现,10%及20%含药血清均能够抑制NuSAP1 mRNA及蛋白水平的表达,并随着含药血清的浓度增加,这一作用更为明显,差异具有统计学意义（P<0.05）。结论：下瘀血汤含药血清可能通过抑制Nusap1表达来抑制Hep-G2细胞的增殖及周期,促进其凋亡,下瘀血汤有望成为治疗肝细胞肝癌的有效中药。     

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…