131I-GM-CSF诱导HL-60/ADM细胞凋亡机制研究

目的:研究131I-GM CSF诱导HL-60/ADM细胞凋亡机制.方法:采用体外放射免疫治疗模型,通过透射电子显微镜、流式细胞术及免疫细胞化学检测等方法,研究131I-GM-CSF辐射一定时间后HL-60/ADM细胞的凋亡率、凋亡形态学上的改变、相关基因的表达和线粒体膜电位的改变.结果:显示131I-GM-CSF可诱导HL-60/ADM细胞凋亡,在诱导细胞凋亡过程中,HL-60/ADM细胞超微结构明显破坏,细胞线粒体膜电位降低,Bax表达上调,Bcl-2、Bcl xl表达下调.结论:131I-GM-CSF作为放射导向治疗药物能诱导HL-60/ADM细胞凋亡,具有抗白血病的作用,其诱导凋亡的机制与开放线粒体膜的通透性转换孔(MPT)、降低线粒体膜电位(MTP),上调Bax,下调Bcl-2、Bcl-xl有关.     

叶酸阿霉素纳米颗粒对舌癌细胞超微结构的影响

目的探讨叶酸阿霉素纳米颗粒对体外培养的舌癌细胞超微结构的影响。方法体外培养的舌癌Tca8113细胞株分别采用阿霉素、叶酸纳米微粒、叶酸阿霉素纳米颗粒干预,透射电镜观察各组细胞超微结构变化。结果对照组细胞呈多角形,细胞内超微结构清晰;叶酸纳米微粒组细胞内内质网略减少;阿霉素组细胞失去多角形结构,线粒体肿胀,内质网脱颗粒,核糖体减少,可见少量凋亡小体;叶酸阿霉素纳米颗粒组细胞核膜崩解,细胞器消失,细胞核染色质固缩,细胞内可见较多凋亡小体。结论叶酸阿霉素纳米颗粒能够抑制口腔鳞癌细胞生长,引起舌癌细胞凋亡,其诱导细胞凋亡作用优于阿霉素单体。     

脂质体阿霉素诱导人喉癌HEP-2细胞株凋亡的研究

目的 研究脂质体阿霉素诱导人喉癌HEP-2细胞株凋亡的机制.方法 用不同浓度的脂质体阿霉素对人喉癌HEP-2细胞株进行处理,四甲基偶氮唑蓝(MTT)法测定HEP-2细胞的增殖抑制率并计算半数抑制浓度(IC50);流式细胞仪(FCM)检测细胞凋亡率;免疫组化法测定脂质体阿霉素作用于HEP-2细胞72h后bcl-2、bax蛋白的表达水平.结果 随脂质体阿霉素浓度增加,HEP-2细胞增殖抑制率升高,流式细胞仪显示不同浓度的脂质体阿霉素诱导HEP-2细胞的凋亡率不同,脂质体阿霉素作用于后bcl-2、bax在HEP-2细胞的表达与对照组相比差异有统计学意义(P<0.05).结论 本实验研究显示,脂质体阿霉素对人喉癌HEP-2细胞具有较好的体外增殖抑制作用,能够诱导HEP-2细胞的凋亡,其诱导HEP-2细胞凋亡的机制可能与bcl-2、bax所调节的凋亡途径相关.     

阿霉素对MGc-803胃癌细胞凋亡的诱导作用

[目的 ]研究阿霉素对MGc 80 3胃癌细胞凋亡的诱导作用 .[方法 ]通过细胞涂片苏木精与伊红染色法、吖啶橙荧光染色法和琼脂糖凝胶电泳法 ,观察了阿霉素诱导MGc 80 3胃癌细胞凋亡的形态变化 .[结果 ]阿霉素能使MGc 80 3胃癌细胞出现典型的凋亡 .DNA电泳呈梯形带 ,进一步证实了光学显微镜所见 .[结论 ]阿霉素可诱导MGc 80 3胃癌细胞发生细胞凋亡 .     

线粒体凋亡通路的研究进展

长期以来,线粒体被认为是细胞存活的关键.然而,直到20世纪90年代中期,线粒体在细胞程序性死亡中所起的重要作用才被人们所认知.线粒体凋亡通路与线粒体相关的一些重要蛋白,如促凋亡因子、细胞色素C、凋亡诱导因子（AIF）、线粒体衍生的第二种半胱天冬酶激活剂（Smac）、高温应激蛋白A2（HtrA2）、核酸内切酶G等在细胞凋亡过程中共同发挥着调控作用.该文主要就线粒体凋亡通路在哺乳动物细胞中所起作用的研究进展予以综述.     

131I-GM-CSF诱导HL-60细胞凋亡机制的体外研究

目的:观察131I-GM-CSF诱导HL-60细胞凋亡及其机制,探讨其在急性髓系白血病放射导向治疗中的作用.方法:采用MTT法、TUNEL、透射电子显微镜研究131I-GM-CSF辐射后HL-60细胞的存活率、凋亡率和形态的改变;用流式细胞术和免疫细胞化学方法检测线粒膜电位的改变以及凋亡相关基因的表达.结果:放射性浓度≥18.5×108Bq/L时HL-60细胞存活率显著下降.131I-GM-CSF能致HL-60细胞凋亡、超微结构破坏、线粒体膜电位降低.在诱导细胞凋亡过程中,p53表达上调,bcl-2、bcl-xl表达下调.结论:GM-CSF作为载体携带131I能诱导HL-60细胞凋亡,具有抗白血病的作用.其诱导凋亡的机制与上调p53,下调bcl-2、bcl-xl,开放线粒体膜的通透性转换孔,降低线粒体膜电位有关.     

阿霉素诱导Tca8113细胞凋亡及其分子机制的研究

【目的】观察阿霉素诱导Tca8113细胞凋亡及其过程中某些凋亡相关分子表达的变化,探讨其诱导凋亡作用的分子机制。【方法】采用MTT法检测阿霉素对Tca8113细胞的增殖作用;以光镜、荧光纤维镜、流式细胞仪和Annexin V-FITC标记法检测细胞凋亡;以蛋白印迹法分析阿霉素对Bcl-2、Bax和Survivin蛋白表达的影响。【结果】阿霉素以剂量依赖方式抑制Tca8113细胞增殖;光镜及荧光显微镜下可见明显凋亡细胞;流式细胞仪检测显示细胞停滞于G1或S期,有明显凋亡峰出现;Annexin V-FITC标记法定量检测证实阿霉素可诱导细胞凋亡发生;蛋白印迹检测表明阿霉素可使Bax表达升高,Bcl-2和Survivin表达下降。【结论】阿霉素可显著抑制Tca8113细胞增殖,可通过调节Bcl-2、Bax和Survivin蛋白表达来实现致凋亡作用。     

细胞凋亡与线粒体通透性转变孔的研究进展

线粒体通透性转变孔(mitochondrial permeability transition pore,MPTP)位于线粒体内外膜之间,由多个蛋白质组成,与细胞凋亡密切相关.在多种凋亡信号如促凋亡蛋白Bax、Bad、Bid和Ca2 、活性氧类等的作用下开放,使线粒体通透性发生转变,线粒体肿胀,线粒体跨膜电位降低,线粒体呼吸链受损,ATP合成受抑制,线粒体释放凋亡诱导因子及细胞色素C,通过不同信号转导途径,激活Caspase级联反应或其他凋亡相关蛋白,使DNA断裂,产生凋亡小体,细胞凋亡.Bcl-2、Bcl-xL、环孢菌素A、米酵菌酸等则可通过不同途径对抗凋亡.通过对MPTP开放机制以及对线粒体膜钾通道和解偶联蛋白调控的研究,可能会为细胞保护提供重要依据.     

阿霉素单用及联用维拉帕米对OS732细胞毒性作用的机制

目的 探讨阿霉素对OS732细胞的毒性作用，维拉帕米是否对阿霉素有增效作用及其作用机制。方法 用MTT法检测肿瘤细胞存活率，比较单用阿霉素及联用维拉帕米对OS732细胞的毒性作用；以流式细胞仪方法检测阿霉素及联用维拉帕米诱导后不同时间点OS732细胞多药耐药指标（Pgp,TopoⅡ和GSTπ）表达情况；以琼脂凝胶电泳法观察阿霉素单用及联用维拉帕米诱导后不同时间点OS732细胞抽取DNA的电泳图；流式细胞仪方法检测阿霉素及联用维拉帕米诱导后OS732细胞凋亡相关因子CD95及Bax蛋白的表达情况。结果 （1）随阿霉素的浓度递增，OS732细胞的存活率呈下降趋势，即阿霉素对OS732细胞生长抑制率呈浓度相关性。同剂量阿霉素对OS732细胞随作用时间延长，细胞存活率下降，但这种趋势并不随时间延长而等幅递增。维拉帕米增强阿霉素对OS732细胞的毒性作用。（2）阿霉素可使OS732细胞获得性耐药，且这种获得性耐药与Pgp,TopoⅡ和GSTπ有关。Pgp和GSTπ表达存在相关性。阿霉素诱导后OS732细胞Pgp和GSTπ表达随时间延长而上调。维拉帕米延缓乃至下调了Pgp的表达。而对TopoⅡ及GSTπ无类似作用。（3）促进肿瘤细胞亡是阿霉素的抑瘤机制之一，且与Fas介导的细胞凋亡途径有关。与Bax途径无关。阿霉素诱导的OS732细胞凋亡呈时间依赖性。维拉帕米可促进阿霉素诱导的OS732细胞凋亡。结论 维拉帕米使阿霉素对OS732细胞的毒性作用增强。临床上应用阿霉素化疗时，更宜选用持续性静脉滴注给药，且以维持48h为宜。阿霉素作用后，OS732细胞获得性耐药与Pagp,TopoⅡ和GST－π有关。阿霉素对OS732细胞毒性作用与它能促进细胞凋亡有关，而维拉帕米延缓Pgp介导的多药耐药的同时促进阿霉素诱导的细胞凋亡。因此，通过促进肿瘤细胞凋亡来实现肿瘤化疗多药耐药的逆转是一条有效途径，本研究为进一步进行肿瘤分子这治疗的研究提供实验基础。     

补骨合剂对全反式维甲酸诱导的骨髓基质细胞凋亡的保护作用

目的:应用体外培养骨髓基质细胞,在细胞和分子水平观察补骨合剂对细胞凋亡的影响,探讨补骨合剂治疗骨质疏松症的机制.方法:分离SD大鼠骨髓基质细胞,通过形态学方法和流式细胞术检测凋亡细胞周期和线粒体膜电位改变以及Bcl 2、Bax蛋白基因表达,对补骨合剂在细胞凋亡过程中的作用进行评价.结果:补骨合剂的早期应用可以使阻滞于G0/G1期的细胞减少,进入S期进行DNA合成的细胞增多;诱导凋亡的细胞在补骨合剂组Bcl 2表达明显高于全反式维甲酸(all-trans retinoic acid,ATRA)诱导组,而Bax表达明显低于ATRA诱导组,且补骨合剂组线粒体的膜电位下降均显著低于ATRA诱导组.结论:补骨合剂治疗骨质疏松症的机制是补骨合剂的早期应用可以使ATRA诱导的凋亡细胞减少,从而促进细胞有丝分裂,抑制细胞凋亡;对骨髓基质细胞线粒体膜上的Bcl-2具有保护作用,同时通过阻止Bax从胞浆中移至线粒体膜上而使Bcl-2在与Bax形成的同源二聚体中占据优势来阻止线粒体膜上的通透性转换孔道开放,从而阻止线粒体释放凋亡诱导因子造成的线粒体膜电位改变和生物合成的破坏,达到抑制凋亡的目的.     

Acupuncture Treatment of Vomiting

CASE HISTORY A female patient, 46 years old, head of the foreign affairs department of a certain university in Beijing, paid her first visit on October 9, 2006, with the chief complaint of vomiting for one month. She got vomiting after meals in early September. Before that, she had discomfortable sensation in the stomach due to angry with others, but she didn't pay much attention. Later, it developed into vomiting after eating. After the vomiting, the discomfort would be relieved, but with slight hypodynamia. She was once diagnosed as having 'neurogenic vomiting'. Having taken some western and Chinese drugs, the above symptoms were a little bit improved, but she would have nausea upon eating and with regurgitation. Because of the fear for vomiting, she did not dare to have food intake, with body weight reduction of 6 kilos in one month.     

Qiu Baoguo''''s Experience in Treating Consumptive Syndromes after Radio-Chemotherapies

Radiotherapy and chemotherapy are the important modern medical therapies for malignant tumors,yet they can also bring about serious local and systemic toxic side reactions so to decrease the patient;'s life quality,manifested by a series of consumptive symptoms.Having engaged in the combined work of Chinese and western medicine for nearly 50 years,the research fellow Qiu Baoguo in Henan Provincial Academy of TCM has developed his unique views on the TCM study of consumptive syndromes.The author of this essay had once the fortune tO follow Dr.Qiu in clinic,and specially would like to introduce in the following Dr.Qiu's experience in treating consumptive syndromes after radio-chemotherapies for patients with malignant tumor.     

Insomnia Due to Deficiency of Both the Heart and Spleen Treated by Acupuncture-Moxibustion and Chinese Tuina

OBJECTIVE: To observe therapeutic effects of the comprehensive therapy of acupuncture-moxibustion and Chinese Tuina for treatment of insomnia due to deficiency of both the heart and spleen. METHODS: 92 cases were divided randomly into the treatment group (treated by acupuncture-moxibustion and Chinese Tuina) and the control group (treated by acupuncture-moxibustion). RESULTS: The therapeutic effect of the treatment group was obviously superior to that of the control group (the CHI2 test showed P < 0.01). CONCLUSIONS: The comprehensive therapy of acupuncture-moxibustion and Chinese Tuina can give marked therapeutic effects for treatment of insomnia due to deficiency of both the heart and spleen.     

Analysis of CK-19,PDX-1,Nestin,Ngn3 in different donor islet purity in rats

Objective: To investigate if there are the CK-19, PDX-1, Nestin, Ngn3 positive cells in the donor islets of different purity in rats. Methods: Thirty male adult SD rats were randomly divided into 3 groups. Islets were isolated using digestion by ductal injection of collagenase. Group Ⅰ (n=10): Separating cell preparations were not purified, Group Ⅱ(n=10): Islet sediment was purified with 25% Ficoll400 ,Group Ⅲ (n=10): Islet sediment was purified with 25% and 11% Ficoll-400. The levels of protein of CK-19, PDX-1, Nestin and Ngn3 were detected by immunohistochemistry and the mRNA of CK-19, PDX-1, Nestin, Ngn3 was amplified by RT-PCR. Results: After two different purification methods applied, three islet preparations of different purities were obtained. The difference of islet purity was significant among various groups (P＜0.05). Compared with group Ⅱ and group Ⅲ,the protein and mRNA of CK-19, PDX-1, Nestin,Ngn3 were both higher in group Ⅰ; group Ⅲ was poorly expressed. Conclusions: The three different islet purity donor islet have different CK-19, PDX-1, Nestin, Ngn3 positive cells within them, indicating that there are some islet stem cells in the purified donor islet.     

A preliminary screening study on the associated proteins in human psoriasis vulgaris by serum proteomics technologies

Objective：To investigate the optimum screening conditions of associated proteins in human psoriasis vulgaris by serum proteomics technique, and to screen the different expression proteins related with psoriasis vulgaris. Methods：Serum samples of peripheral blood were collected from newly diagnosed psoriasis vulgaris patients in the clinic, and 20 matched healthy persons. Serum albumin IgG was removed by filtering with ProteoExtract Albumin/IgG. After comparative proteomics analysis the different protein spots were identified using 2-DE and MS. Results ：Electrophoresis figures with high resolution and reproducibility were obtained. Three different expression proteins were found only in the serum from psoriasis vulgaris patients, while nine other different proteins expressing from healthy volunteers. Conclusion：The protein expression was different in the serum between the psoriasis vulgaris patients and healthy volunteers. It was hoped that we could find the biomarkers related to psoriasis vulgaris by using proteomics.     

A CASE OF HUGE GASTRIC DISOPYROBEZOAR

PYTOBEZOARS are common bezoars in gastrontestinal tract, commonly seen in stomach and mall intestine,1but huge disopyrobezoars are     

Acupuncture Treatment of Chest Bi Syndrome

CASE HISTORY A male,a retired officer of 61 years old,paid his first visit on May 12,2006.The patient stated that 2 weeks before he suddenly got paroxysmal precordial choking pain,with irregular attacks.Each attack would last several seconds to several minutes.The attack was accompanied with heavy oppressed sensation in the precordial region,palpitation,lassitude,and in severe cases,sweating,which was once diagnosed by a hospital as'coronary heart disease'.Recalling the case history,the patient said that several days before he got angry with others because of some affairs in work,and he was not so used to the life pattern since he had just retired from his busy working post.At usual times,he was quick tempered and peevish.In recent days,he had poor appetite,and loose stool.     

Instructions to Contributors

The English edition of Chinese Journal of Integrative Medicine is edited and published by the Chinese Journal of Integrated Traditional and Western Medicine Press.Original scientific papers of advanced clinical and experimental medicine in the field of complementary/alternative medicine or integrative medicine are expected.