三氧化二砷纳米粒子对人直肠癌细胞COX-2及p53基因表达影响的研究

目的 研究三氧化二砷(As2O3)纳米粒子对人直肠癌细胞COX-2及P53表达的影响.方法 采用溶胶-凝胶法制备As2O3纳米粒子.选用人直肠癌细胞株HR8348,利用免疫组化方法,检测经As2O3纳米粒子作用后,COX-2及P53的变化.结果 As2O3纳米粒子可下调人直肠癌HR8348细胞COX-2的表达,而P5...     

三氧化二砷抑制神经母细胞瘤SK-N-SH细胞增殖及诱导凋亡的初步研究

目的：探讨三氧化二砷（AS2O3)抑制神经母细胞瘤SK－N－SH细胞增殖及诱导凋亡的作用。方法：①采用MTT法测定不同浓度的As2O3在不同时间对SK－N－SH细胞增殖的抑制率；②用TUNEL－POD法检测不同浓度的As2O3诱导SK－N－SH细胞凋亡的情况。结果：①各浓度组As2O3均可抑制SK－N－SH细胞增殖，而且延长作用时间比增加作用浓度更能增强药物的抑制作用；②两个浓度的As2O3均可诱导SK－N－SH细胞凋亡，且凋亡指数与浓度高低有关。结论：As2O3可以通过诱导神经母细胞瘤SK－N－SH细胞凋亡而抑制其增殖，有一定的临床应用价值。     

细胞分化剂增强三氧化二砷诱导肝癌细胞的凋亡效应

目的：探讨细胞分化剂（CDA－Ⅱ）在三氧化二砷（As2O3)诱导肝癌细胞凋亡效应中的作用。方法：应用CDA－Ⅱ和As2O3共同处理肝癌细胞株BEL－7402、HepG2，通过四唑蓝比色法检测细胞存活率；用活细胞荧光染色观测细胞凋亡及形态学变化、流式细胞术分析细胞周期变化及凋亡率。结果：CDA－Ⅱ毒性作用很低，但可以显增强As2O3对肝癌细胞生长的抑制作用，1．0g/L CDA-Ⅱ便可使As2O3对两株细胞的半数抑制浓度由5．0μmol/L降低至1．0μmol/L（P＜0．01）。形态学可观察到CDA－Ⅱ明显加强了As2O3诱导的细胞凋亡，且与剂量有关；流式细胞术分析，低质量浓度的CDA－Ⅱ（＜2．0g/L)细胞生长阻滞于G2期较对照组多，而随着剂量的增加则凋亡细胞和滞留于G1期的细胞增多，低剂量CDA－Ⅱ与As2O3共同处理肝癌细胞后，凋亡率明显高于单独用As2O3。结论：CDA－Ⅱ可增强As2O3诱导肝癌细胞的凋亡效应，两药具有协同作用。     

三氧化二砷体外诱导口腔鳞癌细胞凋亡的研究

目的 探讨三氧化二砷（As2O3)对口腔鳞癌细胞的体外生物学作用及机制。方法 采用形态学、MTT、克隆形成试验、DNA梯度降解试验、原位末端标记及流式细胞仪等方法，对As2O3在Tca8113细胞系中的作用进行体外研究。结果 As2O3对Tca8113细胞产生明显的生长抑制作用，MTT显示生长抑制率为76.3%。DNA梯度降解试验、原位末端标记、流式细胞仪显示As2O3诱导了Tca8113细胞凋亡。流式细胞仪显示As2O3的Tca8113细胞凋亡与细胞周期阻滞有关。结论 As2O3对口腔鳞癌细胞具有显著的体外生长抑制及凋亡诱导作用。     

As2O3注射液体外对人大肠癌细胞抑制作用的观察

目的 明确中药砒霜制剂三氧化二砷(As2O3)注射液对人大肠癌细胞的体外抑制作用，为临床应用As2O3治疗大肠癌提供实验依据。方法 采用活细胞观察法、台盘兰拒染法、四甲基偶氮唑蓝比色(MTT)法和透射电镜观察了As2O3对体外培养的人大肠癌细胞株CoLo-320生长的影响及其形态学变化。结果 As2O3能显著地抑制人大肠癌细胞CoLo-320的生长，用药后诱导其出现了典型的细胞凋亡超微结构改变。结论 As2O3对人大肠癌细胞具有显著抑制生长作用，该抑制作用与诱导细胞凋亡密切相关。     

氧化砷诱导人肝癌细胞凋亡相关基因的实验研究

目的：探讨氧化砷（As2O3)对人肝癌细胞诱导凋亡作用的分子机制。方法：以As2O3作用于体外培养的人肝癌细胞株HepG2，通过免疫组化技术对bcl-2,bax,p53,Fas及c-myc五种基因编码蛋白的表达进行检测。结果：经As2O3作用的人肝癌细胞bcl-2基因编码蛋白表达减少，bax,Fas基因编码蛋白表达增加，p53,c-myc基因编码蛋白表达改变不明显，结论：As2O3诱导肝癌细胞凋亡分子机制可能是下调bcl-2基因编码蛋白表达，增强box,Fax基因编码蛋白表达。     

三氧化二砷与顺铂联用对肝癌HepG2细胞的作用

目的 探讨三氧化二砷(As2O3)与顺铂(CDDP)联合对肝癌细胞HepG2的作用.方法 应用MTT法和细胞免疫组化酶法检测人肝癌HepG2细胞Bax,Bcl-2,Fas蛋白的表达情况.结果 As2O3与CDDP联合应用在抑制肝癌细胞的生长繁殖、诱导肝癌细胞凋亡,增强Bax,Fas的表达,下调Bcl-2的表达方面均较各自单用的作用明显增强.结论 As2O3与CDDP联合应用具有明显的协同抗肝癌作用,其主要机制可能为As2O3联合化疗能诱导肝癌细胞凋亡,与增强Bax,Fas的表达,下调Bcl-2的表达有关.     

氧化砷和顺铂对喉鳞癌细胞Hep-2的作用及其机制

目的 探讨氧化砷(arsenous oxide，As2O3)和顺铂(cisplatin，DDP)对喉鳞癌细胞(Hep-2)的作用及其机制。方法 用Hep-2细胞株进行传代培养，观察As2O3和DDP对不同培养时间细胞的生长抑制情况；MTT法检测不同浓度的As2O3和DDP对Hep-2细胞存活率的影响，并记录细胞形态的变化；电镜和3’—原位末端标记法(TUNEL)检测Hep-2细胞凋亡的发生和形态学改变。结果 ①随着药物对Hep-2细胞作用时间的延长，细胞生存率明显降低，存在时间依赖性。②MTT检测显示，As2O3和DDP对细胞增殖的抑制效应具有剂量依赖性。③光镜观察发现，药物作用组细胞出现病变。④电镜和TUNEL染色证实，As2O3和DDP对Hep-2细胞的抑制作用是以促进细胞凋亡为主。结论 As2O3和DDP可能通过促进细胞凋亡发挥抗肿瘤的作用。     

As2O3磁性纳米微球的制备及其联合磁流体热疗对宫颈癌治疗的体外实验研究

目的：研究As2O3磁性纳米微球的制备及其联合磁流体热疗（MFH）对宫颈癌Siha细胞株的治疗作用。方法：采用改良的乳化冷冻凝聚法制备As2O3磁性纳米微球，能谱仪、原子荧光光谱仪对其进行表征；高频交变磁场中进行体外升温实验。四甲基偶氮唑蓝（MTT）比色法检测As2O3磁性纳米微球联合MFH对宫颈癌Siha细胞株生长的影响，流式细胞仪（FCM）检测凋亡。结果：所制备As2O3磁性纳米微球近似球形，粒径约为120nm，含砷量为0．61％，在输出电流I=300A的高频交变磁场中具有升温能力，且能达到肿瘤治疗的有效温度（41℃～46℃）；As2O3磁性纳米微球联合MFH能抑制宫颈癌Siha细胞株的生长，促进其凋亡，且均较单纯As2O3液及单纯MFH明显。结论：As2O3磁性纳米微球可同时发挥As2O3的细胞毒性作用和磁感应加热的联合定向治疗作用，效果优于单一治疗，为临床治疗宫颈癌提供新的方法。     

三氧化二砷对Bel-7402人肝癌细胞株的促凋亡作用

目的 :研究三氧化二砷 (As2 O3 )在体外是否具有抗肝癌作用 ,并对其作用机制进行初步探讨。方法 :用不同浓度的As2 O3 处理Bel 740 2人肝癌细胞株及L 0 2正常人肝细胞株 ,应用四甲基偶氮唑盐比色法 (MTT法 )观察As2 O3 对细胞生长的影响 ,并用电镜、流式细胞仪、DNA电泳等检测方法研究其作用机制。结果 :MTT法发现As2 O3 0 .5～ 2 .0mg·L-1的浓度均可显著抑制Bel 740 2人肝癌细胞株的生长 ,而对L 0 2正常人肝细胞株的抑制作用较弱。经As2 O3 作用后 ,透射电镜和扫描电镜观察均显示Bel 740 2细胞发生了显著的凋亡形态改变 ;提取细胞DNA行琼脂糖凝胶电泳可见典型的梯形条带 ;流式细胞仪分析可见有亚G1峰出现 ,凋亡率呈时间和剂量双重依赖性特点。结论 :As2 O3 在体外可显著抑制肝癌细胞株生长 ,其作用机制主要是诱导肿瘤细胞凋亡     

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.     

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