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1.
目的研究蛴螬石油醚提取物对人宫颈癌HeLa细胞增殖和凋亡的影响,并探讨其作用机制。方法MTT法检测蛴螬石油醚提取物对体外培养的HeLa细胞株增殖抑制作用及细胞毒活性;末端脱氧核苷酸转移酶(TdT)介导的脱氧核苷酸缺口末端标记(TdT-mediateddUTPnickendlabeling,TUNEL)法检测细胞凋亡;通过免疫细胞化学S-P法测定凋亡相关基因产物Bcl-2、Bax蛋白与凋亡相关蛋白caspase-8和caspase-3的表达情况。结果蛴螬石油醚提取物对HeLa细胞的增殖抑制作用呈剂量依赖性和时间依赖性(P<0.01)。蛴螬石油醚提取物作用细胞后凋亡细胞数目随时间延长而增多;凋亡指数与药物处理呈时间依赖性和剂量依赖性。蛴螬石油醚提取物作用后Bcl-2蛋白表达均下降,Bax、caspase-8和caspase-3表达上升,4种蛋白表达各组间比较均差异显著(P<0.01)。结论蛴螬石油醚提取物对HeLa细胞具有抑制增殖及诱导凋亡作用。蛴螬石油醚提取物对HeLa细胞抑制增殖作用(50μg/mL作用48h之前)主要以诱导凋亡为主。蛴螬石油醚提取物诱导凋亡作用可能与下调Bcl-2表达,上调Bax、caspase-8和caspase-3表达有关。  相似文献   

2.
目的:观察蛴螬提取物对人肺癌A549细胞增殖的影响及其机制。方法:采用MTT法检测蛴螬提取物对人肺癌A549细胞的生长抑制率;用HE染色方法观测凋亡细胞的形态学变化;运用免疫组织化学SP法检测用药前后细胞周期蛋白D1(CyclinD1)的表达改变。结果:用蛴螬提取物处理的人肺癌A549细胞生长抑制率明显高于对照组;施药早期细胞出现凋亡形态学变化;A549细胞经蛴螬提取物处理后CyclinD1表达均下降。结论:蛴螬提取物在体外对人肺癌A549细胞株有显著的增殖抑制作用,其机制与下调CyclinD1的表达有关。  相似文献   

3.
目的:探讨箸叶多糖对人宫颈癌细胞株Hela的体外增殖的抑制作用。方法:采用M'IT法检测箬叶多糖对人宫颈癌细胞增殖的抑制作用,并观察细胞形态变化。结果:箬叶多糖对Hela细胞抑制作用较强,量效关系和时效关系良好;形态学观察到细胞凋亡。结论:箬叶多糖对体外培养的宫颈癌Hela细胞有较强的抑制作用。  相似文献   

4.
《辽宁中医杂志》2015,(7):1300-1301
目的:研究蝙蝠葛提取物体外对人胃癌SGC-7901细胞株的形态学改变。方法:应用MTT法、倒置显微镜、HE染色、Hoechst荧光染色以及吖啶橙/溴化乙锭荧光染色方法检测蝙蝠葛提取物对体外培养的人胃癌SGC-7901细胞的形态学改变。结果:蝙蝠葛提取物对人胃癌SGC-7901细胞株具有抗增殖作用,并呈时间-浓度依赖性。倒置显微镜、HE染色观察示核固缩、边集以及凋亡小体的形成等典型形态学改变。Hoechst荧光染色,AO/EB双染色结果也显示细胞死亡主要以凋亡为主。结论:蝙蝠葛提取物体外对人胃癌SGC-7901细胞株具有抗增殖及诱导凋亡作用。  相似文献   

5.
《中成药》2017,(7)
目的体外筛选出金线莲抗肿瘤作用的最佳活性部位,并检测其对肿瘤细胞凋亡的影响。方法采用MTT实验检测金线莲不同极性部位对人宫颈癌He La细胞、人体黑色素瘤A375细胞、人喉癌Hep-2细胞和人结肠癌Lo Vo细胞增殖抑制作用,从而筛选出活性最佳部位及对应细胞系。HE和AO/EB染色法观察最佳活性部位处理后细胞形态变化;流式细胞术检测细胞凋亡。结果 MTT实验结果显示,石油醚部位对各肿瘤细胞的生长增殖具有较强的抑制作用,其中对Lo Vo细胞的抑制效果最明显,作用48 h后其IC50为(45.51±1.66)μg/m L。HE染色和AO/EB荧光染色结果都显示石油醚部位作用于Lo Vo细胞后,出现了典型的凋亡形态学特征。流式细胞术检测经不同浓度石油醚部位作用后,Lo Vo细胞凋亡率和坏死率随浓度的增大逐渐上升。结论金线莲石油醚部对肿瘤细胞具有较强的抑制作用,其作用方式可能是通过诱导细胞凋亡来实现的。  相似文献   

6.
目的:探讨苦参碱对宫颈癌Hela细胞增殖、凋亡的影响及其可能的分子机制.方法:应用不同浓度的苦参碱作用于人宫颈癌Hela细胞,采用MTT法检测细胞增殖;Annexin V FITC/PI双染色流式细胞仪检测细胞凋亡和细胞周期;RT-PCR和Western blotting分析Survivin基因表达.结果:苦参碱对Hela细胞的体外增殖具有抑制作用,量效关系显著,与对照组比较有统计学差异(P<0.01),半数抑制浓度(IC50)为2.60 g·L-1.经流式细胞仪检测表明,苦参碱能使Hela细胞G0-G1期逐渐增加,G2-M期和S期逐渐减少,并且随着剂量的增加,Hela细胞凋亡率明显增加(P<0.01).苦参碱对Hela细胞Survivin 基因表达有一定的抑制作用(P<0.01),并呈剂量依赖性.结论:苦参碱能有效抑制人宫颈癌Hela细胞的增殖,诱导其凋亡,其作用机制可能与抑制Survivin基因的表达有关.  相似文献   

7.
柳叶蜡梅提取物对人胃癌SGC-7901细胞的作用机制研究   总被引:2,自引:0,他引:2  
目的:探讨柳叶蜡梅提取物在体外对人胃癌细胞株SGC-7901的增殖抑制作用及其可能的机制。方法:应用细胞培养、噻唑蓝(MTT)比色法、光镜观察、扫描和透射电镜观察、Hoechst33258/PI染色等技术研究柳叶蜡梅提取物对SGC-7901细胞的抑制作用。结果:柳叶蜡梅提取物可明显抑制SGC-7901细胞生长,随着药物浓度的增加,呈现剂量依赖性效应;光镜及扫描透射电镜观察显示,药物处理组细胞表面微绒毛减少并发泡、细胞核固缩、染色质凝聚等形态学特征;细胞核经Hoechst33258染色出现颗粒状荧光,而PI染色无红色荧光出现。结论:柳叶蜡梅提取物对人胃癌SGC-7901细胞具有明显的抑制作用,其机制可能与细胞凋亡相关。  相似文献   

8.
孙抒  金哲  李基俊 《四川中医》2005,23(2):12-15
目的 :探讨蛴螬提取物体外对MGC 80 3胃癌细胞株的抗增殖及诱导凋亡的形态学观察。方法 :通过倒置显微镜、HE染色、扫描电镜技术及吖啶橙 (AO) /溴化乙锭 (EB)荧光染色方法和免疫细胞化学技术检测蛴螬提取物对MGC 80 3胃癌细胞诱导凋亡作用的方式。结果 :(1)光镜及电镜观察结果表明 ,蛴螬 (终浓度为 4mg/ml)作用于MGC 80 3胃癌细胞 2 4h后 ,可见胞核固缩、胞核碎裂、凋亡小体形成等凋亡形态学变化 ;(2 )经AO/EB荧光染色观察结果表明 ,当终浓度为 4mg/ml的蛴螬作用于MGC 80 3细胞 2 4h后 ,其凋亡率和破膜率与自然凋亡率和破膜率相比均有显著性差异 ,其凋亡率为 86 3% (P <0 0 0 1) ,破膜率为 4 1 9% (P <0 0 0 1)。说明蛴螬提取物确实有诱导MGC 80 3细胞凋亡的作用 ,同时也有细胞毒作用 ,但以诱导细胞凋亡为主。 (3)应用免疫细胞化学技术(S P法 )检测用药前后ki 6 7抗原的表达改变 ,探讨蛴螬提取物在体外对MGC 80 3胃癌细胞株的抗增殖作用。结论 :蛴螬提取物在体外对人MGC 80 3胃癌细胞株有显著抗增殖及诱导凋亡作用。  相似文献   

9.
目的:探讨蛴螬提取物体外对MGC-803胃癌细胞株的诱导凋亡作用的分子生物学机制.方法:通过倒置显微镜、HE染色、吖啶橙(A0)/溴化乙锭(EB)荧光染色方法检测蛴螬提取物对MGC-803胃癌细胞诱导凋亡和抑制作用的方式;应用免疫组织化学技术(S-P法)检测用药前后凋亡相关基因bcl-2、bax表达的改变,探讨蛴螬提取物在体外对MGC-803胃癌细胞株的抗增殖及诱导凋亡作用的可能机制.结果:光镜结果表明,蛴螬(终浓度为4mg/ml)作用于MGC-803胃癌细胞24h后,可见胞核固缩、胞核碎裂、凋亡小体形成等凋亡形态学变化;经AO/EB荧光染色观察结果表明,当终浓度为4mg/ml的蛴螬作用于MGC-803细胞24h后,其凋亡率和破膜率与自然凋亡率和破膜率相比均有显著性差异,其凋亡率为86.3%(P<0.001),破膜率为41.9%(P<0.001).免疫组化结果表明,用药前后凋亡相关基因bcl-2、bax均有显著性改变(P<0.001).结论:蛴螬提取物在体外对人MGC-803胃癌细胞株有显著性抗增殖及诱导凋亡作用,其诱导肿瘤细胞凋亡的可能机制与凋亡相关基因bcl-2、bas的表达改变有关.  相似文献   

10.
天花粉蛋白抑制HeLa细胞增殖的实验研究   总被引:1,自引:0,他引:1  
目的研究天花粉蛋白(TCS)对人宫颈癌HeLa细胞生长的抑制作用,探讨TCS抗肿瘤的作用机制。方法采用MTT法检测TCS对Hela细胞的抑制作用,形态学观察、DNA电泳及流式细胞仪检测TCS对HeLa细胞的诱导凋亡作用。结果TCS对HeLa细胞的生长具有明显的抑制作用,显微镜下可见细胞圆缩,胞浆凝聚等凋亡细胞的形态学改变,DNA凝胶电泳呈梯级格局,流式检测出现凋亡峰,凋亡比例具有剂量和时间依赖性。结论天花粉蛋白通过诱导细胞发生凋亡而抑制宫颈癌HeLa细胞的增殖。  相似文献   

11.
汤卫国  王奇志  印敏  王鸣  陈雨  张建华  冯煦 《中草药》2014,45(15):2172-2177
目的建立微波消解-电感耦合等离子体质谱(ICP-MS)直接稀释测定脉络宁注射液中25种矿物质元素(Mg、Ca、Fe、Cu、Zn、Mn、Al、B、Ba、Co、Cr、K、Li、Mo、Na、Ni、P、Pb、Sr、Th、Ti、V、As、Cd和Hg)的方法。方法分别对微波消解条件和测试条件进行考察;样品经微波消解后,采用电感耦合质谱仪测定25种矿物质元素,并对测定方法学进行考察。结果确定最佳消解条件为3步缓慢升温:400 W 80℃升温10 min,保留5 min;600 W 120℃升温10 min,保留5 min;900 W 200℃升温20 min,保留20 min;25种矿物质元素在各自的线性范围内线性关系良好,r≥0.999 6,精密度、稳定性和重复性试验的RSD均符合定量分析要求;加标回收率为94.7%~106.1%,RSD在0.34%~2.79%。脉络宁注射液中检测出Mg、Ca、Fe、Cu、Zn、Mn、Al、B、Ba、Co、Cr、K、Li、Mo、Na、Ni、P、Pb、Sr、Th、Ti、V,未检出As、Cd和Hg。结论该方法简便、迅速、准确,适用于脉络宁注射液中25种矿物质元素的同时测定。  相似文献   

12.
The disturbance and instability of laterality are obstacles to diagnostics and therapy. Correction prior to starting therapy is required. They also predispose toward defined health problems and unspecific diseases. Numerous research activities provide evidence of the relevance of undisturbed laterality in diagnostics and therapy. Techniques of testing and therapeutic corrections will allow for optimized therapy success.  相似文献   

13.
14.
The Journal of Acupuncture and Tuina Science, a journal with an international scope (IS SN 1672-3597, CN 31-1908/R, Bimonthly), is embodied by 'Springer Verlag' Database, Index Copernicus (IC) and Chinese Scientific and Technical Paper and Citations Data (CSTPCD). You can search full text on http://www, springerlink, com/content/1672 -3597.  相似文献   

15.
正Beverages based on Ilex paraguariensis A.St.-Hil.are used in the south Brazil and other Latin American countries located at the so-called southern cone.It is known as chimarro or mate in south and southeast Brazil,tererêin  相似文献   

16.
This paper deals with an interdisciplinary study covering historic, botanical, phytochemical, pharmacological and clinical aspects of rhubarb and related species, to lay stress on the correlation between plant phylogeny, chemical constituents and purgative activity.

It was found that the official rhubarbs were exclusively restricted in the Sect. Palmata e.g. Rheum palmatum R. palmatum var. tanguticum R. officinale; the following criteria may serve as their standard, viz., the presence of sennoside derivatives and rhein, the occurrence of the reduced form of rhein and aloe-emodin, the leaves with any kind of palmate incision. Comprehensive multivariate analyses showed that there is a very close relationship between the leaf incision, existence of sennosides or rhein and purgative activity.  相似文献   


17.

Background

At present, the state-of-the-art medication in treating idiopathic taste disorder (gustatory dysfunction) is zinc. If zinc medication was unsuccessful, not tolerated or if it is contraindicated the persons affected can hardly be helped.

Objectives

In a randomized placebo-controlled clinical trial an attempt was made to determine the efficacy of acupuncture.

Methods

The treatment group was treated with acupuncture needles, the placebo group with an inactive acupuncture-laser. Endpoints of the study were changes in the taste test, the quality of life and the severity of symptoms of depression (BDI) as well as mood changes (ZMS). Satisfaction with the success of the respective therapy was also evaluated. Data were collected before and after therapy and again for the treatment group 10 weeks after completion of the treatment period.

Findings

Treatment with real acupuncture showed a significant improvement in gustatory function as well as a significant improvement in psychological symptoms. Greater satisfaction with the treatment results was evident in the treatment group. The treatment results of acupuncture remained stable over a period of ten weeks after completion of the treatment.

Conclusion

Acupuncture was effective in the therapy of idiopathic taste disorders and therefore it is an effective alternative when zinc medication is not tolerated or unsuccessful. But it is also suitable as a therapy of first choice. Acupuncture can be considered as an extension of the therapeutic spectrum in the difficult treatment of taste disorders.  相似文献   

18.

Background

Experimental and clinical studies postulate a neurobiological mechanism of acupuncture by modulating central pain systems, neurohormones and -transmitters. It seems to be quite likely that the autonomic nervous system (ANS) plays an important mediating role in this neuromodulation.

Aim

In measuring heart rate variability (HRV), as a non-invasive approach to the ANS-function, the object of this study was to monitor probable acupuncture-induced changes of autonomic balance. The innovative technology of laser-needle acupuncture offers for the first time a stimulation method which fulfils the demands on a placebo-controlled acupuncture trial not requiring controversial sham acupuncture.

Method

19 healthy voluntary subjects underwent 3 treatments in randomized sequence, consisting of placebo-, 1-point- (PC 6) and simultaneous 3-point- (PC 6, LR 3, SI 3) laser-needle-stimulation over 20 minutes. Before, during and after placebo-/verum laser-needle acupuncture, HRV-data for normalized HF(high frequency)- and LF(low frequency)-Power (nHF, nLF) and their quotient nLF/nHF obtained by power spectrum analysis (FFT), were measured and analyzed statistically at 5 different time points (ANOVA repeated measures, p < 0,05).

Results

During both verum applications, the 1-point- (PC 6) as well as the simultaneous 3-point- (PC 6, LR 3, SI 3) laser-needle stimulation, significant changes of the ANS-activity were found in comparison to the placebo application. The most significant modification of HRV was an increase of nHF (p < 0,05 (PC 6), p < 0,0001 (PC 6, LR 3, SI 3)) as an expression of growing vagal activity during acupuncture.

Conclusion

Laser-needle acupuncture causes in 1-point-stimulation (PC 6) as well as in simultaneous 3-point-stimulation (PC 6, LR 3, SI 3) significant changes in HRV in comparison to placebo application. HRV-monitoring seems to be a suitable approach in exploration of acupuncture-induced changes of ANS and could possibly be established in combination with laser needle acupuncture as a standard for further scientific and clinical acupuncture investigations which are greatly needed.  相似文献   

19.
瑞香科植物广泛分布于世界热带和温带地区,其中多种植物可供药用。在对该科植物的研究中发现,黄酮类、木脂素和香豆素等酚性化合物的低聚体为其重要的特征性成分,药理活性主要表现在抗肿瘤、抗炎、抗氧化、抗菌和抗病毒等方面。对已发现的酚性聚合体的化学结构、植物来源及药理活性进行综述,为瑞香科植物今后的研究和开发利用提供参考。  相似文献   

20.
目的采用HPLC梯度洗脱法同时测定沉香化滞丸中沉香四醇、柚皮苷、橙皮苷、新橙皮苷、和厚朴酚、大黄素、厚朴酚、木香烃内酯、去氢木香内酯、大黄酚、大黄素甲醚11种成分。方法采用Thermo Syncronis C18色谱柱(250 mm×4.6 mm,5μm),流动相为水-乙腈,梯度洗脱:0~10 min,20%乙腈;10~20 min,20%~40%乙腈;20~24 min,40%乙腈;24~26 min,40%~52%乙腈;26~30 min,52%乙腈;30~31 min,52%~90%乙腈;31~35 min,90%乙腈;35~40 min,90%~100%乙腈;40~43min,100%乙腈;43~45min,100%~20%乙腈;检测波长215nm,体积流量1.0m L/min,柱温30℃,进样量20μL。结果各成分在43 min内分离良好,沉香四醇、柚皮苷、橙皮苷、新橙皮苷、和厚朴酚、大黄素、厚朴酚、木香烃内酯、去氢木香内酯、大黄酚、大黄素甲醚的线性范围分别为1.4~13.6、10.0~200.0、31.5~315.0、1.0~120.1、1.8~50.6、0.93~10.1、1.8~30.0、0.2~40.3、1.8~18.1、1.7~25.0、0.45~10.70μg/mL;样品中各成分的平均回收率均在98.90%~100.87%;11种成分精密度RSD在0.55%~1.54%;供试品溶液在30 h内稳定性良好,RSD在0.75%~1.94%;重复性RSD在0.39%~1.73%。6批次样品中沉香四醇、柚皮苷、橙皮苷、新橙皮苷、和厚朴酚、大黄素、厚朴酚、木香烃内酯、去氢木香内酯、大黄酚、大黄素甲醚质量分数分别为92.0~201.0、511.5~9 033.0、5 475.0~12 635.5、54.5~5 095.5、192.0~2 137.5、117.0~391.5、106.5~1 281.5、13.0~136.5、93.5~199.0、177.0~1 207.0、33.5~251.5μg/g。结论本方法准确、快速、简便,重复性好,精密度高,适用于沉香化滞丸中多种活性成分的定量分析。  相似文献   

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