染料木黄酮诱导膀胱癌T24细胞凋亡的实验研究

目的　研究染料木黄酮对人T2 4膀胱癌细胞的抑制作用和诱导凋亡作用 ,并探讨其作用机制。方法　将不同浓度的染料木黄酮作用于人T2 4膀胱癌细胞 ,用MTT法检测其有效作用浓度 ,分别采用透射电子显微镜、瑞氏染色、Hoechest332 5 8荧光染色、流式细胞仪观察和检测T2 4细胞凋亡情况。结果　MTT法测得染料木黄酮对T2 4细胞的IC50 值为32 80mg·L-1,浓度为 2～ 80mg·L-1的染料木黄酮具有诱导人T2 4膀胱癌细胞凋亡的作用 ,且随药物作用时间延长凋亡率逐渐增加。结论　染料木黄酮具有抗膀胱癌作用 ,其重要作用机制之一是诱导人T2 4膀胱癌细胞凋亡     

高浓度花生四烯酸诱导ECV304细胞凋亡

目的 :探讨花生四烯酸是否能诱导人膀胱癌细胞ECV30 4凋亡及其可能机制。方法 :噻唑蓝 (MTT)法检测细胞存活率 ,比色法测定乳酸脱氢酶 (LDH)释放率 ,硫代巴比妥酸法测定细胞脂质过氧化产物丙二醛 (MDA)含量 ,Hoechst 332 5 8染色观察凋亡细胞核形态变化。结果 :ECV30 4细胞在 80～ 1 6 0 μmol·L-1 花生四烯酸作用 2 4h后 ,细胞存活率明显下降 ,LDH释放率和细胞MDA含量显著增加 (P <0 .0 1 )。经 1 6 0 μmol·L-1 花生四烯酸处理 2 4h后的ECV30 4细胞呈现典型的凋亡核固缩表现 ,琼脂糖凝胶电泳显示DNA凋亡梯带。结论 :80～ 1 6 0 μmol·L-1 的高浓度花生四烯酸能诱导ECV30 4细胞凋亡 ,脂质过氧化作用参与了花生四烯酸致ECV30 4细胞损伤及凋亡过程     

维生素K2对人骨髓增生异常综合征细胞株MUTZ-1增殖抑制作用的实验研究

目的研究维生素K2(VK2)对人骨髓增生异常综合征细胞株MUTZ-1的生长抑制作用.方法采用光镜或电镜技术观察VK2作用于MUTZ-1细胞株后细胞形态和超微结构的改变;应用四甲基偶氮唑蓝( MTT)法检测细胞的增殖抑制作用.结果VK2作用于MUTZ-1 72 h后呈现典型凋亡细胞的形态学改变, 且随着VK2浓度的增加和作用时间的延长凋亡细胞所占的百分比增高;MTT结果显示10 μmol·L-1及以上浓度的VK2处理MUTZ-1细胞株后细胞生长明显受抑,并呈浓度依赖性,与对照组比有显著性差异(P＜0.05);且随着VK2作用时间的延长细胞凋亡率也逐渐增高,且呈明显的时间依赖性(P＜0.05).5μmol·L-1的VK2有促MUTZ-1细胞株增生的趋势,但与对照组相比无显著性差异(P＞0.05).结论低浓度VK2(5μmol·L-1)对MUTZ-1细胞株有促增殖趋势;较高浓度的VK2(10～40μmol·L-1)主要是通过诱导MUTZ-1细胞凋亡而抑制其增殖.     

过氧化氢诱导乳鼠心肌细胞凋亡及半胱天冬酶-3抑制剂的作用

目的　观察外源性羟自由基对心肌细胞凋亡的诱导作用 ,并探讨其可能的信号转导通路 .方法　 1利用培养的第 2代心肌细胞 ,随机分成 4组 ,在终浓度为 10 - 4 mol· L- 1 ,10 - 3 mol· L- 1 的过氧化氢 [一组加半胱天冬酶 - 3(caspase- 3)的抑制剂 (DEVD- FMK) 10 μmol· L- 1 ]无血清条件下培养2 4h.观察各组心肌细胞存活率 ,TU NEL 法检测凋亡 ,透射电镜观察细胞超微结构 ,流式细胞仪检测细胞的凋亡率 .结果　 1外源性羟自由基对心肌细胞生长具有明显抑制作用 .2低浓度过氧化氢 (10 0 μmol· L- 1 )可诱导培养的心肌细胞发生凋亡 ,心肌细胞呈现特征性超微结构变化 ,TU NEL检测呈现黄绿色荧光 ,流式细胞仪 PI染色法呈现典型的亚二倍体峰 .高浓度时则主要致使心肌细胞坏死 .3caspase- 3抑制剂(DEVD- FMK)可阻断外源性 OH-对心肌细胞生长的抑制作用 ,降低心肌细胞的凋亡率 .结论　低浓度羟自由基能诱导心肌细胞凋亡 ,其信号转导通路包括 caspase- 3途径     

醋酸棉酚诱导鼠前列腺癌细胞凋亡的研究

目的研究醋酸棉酚对鼠前列腺癌RM-1细胞的抑制作用和诱导凋亡作用,探讨其作用机制。方法将不同浓度的醋酸棉酚作用于鼠前列腺癌RM-1细胞,利用MTT法检测其有效作用浓度,分别采用电子显微镜及流式细胞仪观察和检测RM-1细胞凋亡和bax蛋白表达情况,RT-PCR检测mRNA表达水平变化。结果MTT法测得其IC50值为34.56mg／L,浓度为30mg／L的醋酸棉酚具有诱导鼠前列腺癌RM-1细胞凋亡的作用,且随药物作用时间的延长,凋亡率逐渐增加,同时bax蛋白表达也逐渐增加;RT-PCR显示bax-mRNA水平逐渐升高。结论醋酸棉酚能诱导鼠前列腺癌细胞凋亡,其作用机制之一是上调bax-mRNA水平、增加bax蛋白表达,且具有时间依赖性。     

原钒酸钠的细胞毒理学实验研究

目的　探讨原钒酸钠 (SOV)对心肌细胞的毒性作用及其机制。方法　采用循环灌流的方法急性分离成年豚鼠心肌细胞 ,使其在原钒酸钠浓度为 1,10 ,10 ,10 0 μmol·L- 1 ,1mmol·L- 1 作用后 ,分别检测 30 ,6 0 ,12 0 ,180min 4个时相心肌细胞保存液中LDH、CK含量以及心肌细胞蛋白量和Na+ ,K+ ATP酶活性 ,检测心肌细胞凋亡率和细胞活力 ;电镜下观察死亡和凋亡细胞的细胞器和细胞核形态学变化。结果　在原钒酸钠 10 0 μmol·L- 1 和 1mmol·L- 1 两个组的各时相保存液中LDH、CK以及心肌细胞中蛋白含量增加 ;心肌细胞中Na+ ,K+ ATP酶活性和细胞活力降低 ,与对照组相比差异有显著性 (P <0 .0 1)。流式细胞仪显示 :在180min时 10 0 μmol·L- 1 和 1mmol·L- 1 两组的细胞凋亡率与对照组相比增加 (P <0 .0 5 )。结论　在原钒酸钠浓度高于 10 0 μmol·L- 1 且作用时间在 30min以上时 ,心肌细胞出现不可逆性损害。     

赛庚啶对谷氨酸诱导的神经元损伤的影响及可能机制

目的 :观察赛庚啶 (Cyproheptadine,CPH)对谷氨酸 (Glutamate ,Glu)诱导的大鼠大脑皮质神经细胞兴奋毒性的影响及其可能机制。方法 :实验分 5组 ,①对照组 ;②Glu组 ;③Glu +1μmol·L-1CPH组 ;④Glu +10 μmol·L-1CPH组 ;⑤Glu +10 0 μmol·L-1CPH组 ,用倒置显微镜观察神经细胞形态的变化 ,用Trypanblue染色法观察细胞死亡率 ,测定乳酸脱氢酶 (LDH)和总过氧化物歧化酶 (T SOD)的变化。结果 :5 0 μmol·L-1Glu使细胞死亡率升高 ,LDH释放显著增加 ,T SOD降低。 10 ;10 0 μmol·L-1CPH能减少LDH的释放 ,降低细胞死亡率 ,1;10 ;10 0 μmol·L-1CPH还能升高T SOD。结论 :CPH对Glu介导的神经元损伤有保护作用 ,其机制可能与提高T SOD的活性 ,使神经细胞抵抗自由基攻击的能力和抗脂质过氧化作用增强有关。     

HPV16 E6基因反义寡核苷酸诱导SiHa细胞凋亡的研究

目的　探讨 HPV16 E6反义寡核苷酸 (AE6 )对宫颈癌细胞 Si Ha细胞凋亡的诱导作用 .方法　应用细胞生长抑制实验 (MTT)、透射电子显微镜 (TEM)、DNA电泳及流式细胞术 (FCM)研究 AE6对 Si Ha细胞生长抑制、超微结构改变、核酸及细胞增殖周期的影响 .结果　 AE6 1～ 40μmol· L- 1对 Si Ha细胞抑制率为 9.9%～ 6 0 .3% ,相互间有显著性差异(P<0 .0 5 ) .AE6 2 0 μmol· L- 1作用 72 h,Si Ha出现凋亡形态学改变 ,DNA电泳呈梯状带型 .AE6 5 ,10 ,2 0和 40μmol· L- 1 作用 72 h后 ,Si Ha细胞凋亡率分别为 1.9% ,7.9% ,8.1%和 19.7% .结论　 HPV16 E6基因与 HPV16阳性宫颈癌细胞的增殖和细胞凋亡密切相关 ,AE6可通过诱导 Si Ha细胞凋亡而抑制其生长 ,它的分子克隆有助于阐明宫颈癌发生的分子机制     

5-氮杂胞苷对骨髓间充质干细胞向肌细胞增殖及分化的影响

目的:探讨在不同浓度5-氮杂胞苷(5-Aza)诱导间充质干细胞(MSCs)分化为成肌细胞过程中, 其对干细胞增殖及分化的影响。方法:分离纯化鉴定4周龄Wistar大鼠骨髓MSCs,以不同浓度5-Aza作用,用四唑盐(MTT)法测定细胞生长活力,观察细胞形态变化,通过RT-PCR及电泳测定诱导后大鼠的MSCs中骨骼肌肌动蛋白的表达。结果:0和1 μmol·L-1 5-Aza对细胞增殖无明显影响;随着5-Aza浓度的增高,MSCs 的增殖逐渐减弱;20～30 μmol·L-1 5-Aza对细胞有毒性作用,影响其增殖。3和6 μmol·L-1 5-Aza,MSCs有骨骼肌肌动蛋白的表达;9和12 μmol·L-1 5-Aza,MSCs有骨骼肌肌动蛋白的表达,该浓度作用9 d后有部分细胞体明显增粗,12 d有肌管样细胞出现。结论:5-Aza影响干细胞分化,调控基因的表达及调控MSCs向肌细胞定向分化为肌管样细胞的过程。     

有丝分裂阻滞剂Nocodazole诱导HL-60细胞的凋亡

目的　以细胞有丝分裂阻滞剂 Nocodazole为诱导物 ,诱导白血病细胞系 HL- 6 0细胞凋亡 ,并进行形态学和生物化学指标的检测 .方法　首先 ,观察 1nmol· L- 1 ～ 10μmol· L- 1递增浓度的 Nocodazole对 HL- 6 0细胞的作用 ,然后选取浓度 5 0 0 nm ol· L- 1 诱导凋亡 ,通过 HE染色、荧光染色、DNA片段化 (DNA fragmentation)及流式细胞仪分析研究其凋亡的特征 .结果　 5 nm ol· L- 1～ 10 μm ol· L- 1的Nocodazole都可以诱导 HL - 6 0细胞的凋亡 .在 5 0 0 nmol·L- 1 的 Nocodazole作用下 ,HE染色、荧光染色显示从 6 h开始即出现胞质嗜碱性增强、细胞核固缩断裂、凋亡小体形成等凋亡的形态学特征性改变 .基因组 DNA电泳检测显示从 8h开始出现微弱的梯状 DNA.流式细胞仪检测了不同时间点的细胞周期显示了 G2期阻滞 ,未能检测到亚二倍体峰 .结论　我们用 Nocodazole不仅诱导了典型的白血病细胞凋亡 ,而且在 G2 /M期阻滞与凋亡之间建立了联系 ,可用于凋亡机制或细胞周期调控与凋亡关系的研究     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

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…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

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.     

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.     

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.     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.