多药耐药基因TopoⅡ仪mRNA在胃癌及其相邻正常组织中表达

目的 :研究拓朴异构酶TopoⅡα在胃癌内在耐药性中的作用。 方法 :采用RT PCR方法 ,检测 36例胃癌及其相邻正常组织中TopoⅡαmRNA的表达状态。结果 :TopoⅡα在胃癌中表达 (47.2 % ) ,显著高于其相邻正常组织 (13.9% ,P <0 .0 5 )。结论 :胃癌存在内在性耐药 ,TopoⅡα表达是胃癌内在性耐药的影响因素之一     

HL60/VCR白血病细胞多药耐药机制的初步探讨

目的探讨白血病细胞产生耐药的机制,以及VEGF在白血病细胞产生耐药过程中的作用。方法采用反复暴露并逐渐提高诱导药物浓度的方法建立HL60/VCR多药耐药细胞系,MTT法检测细胞的耐药性及交叉耐药性;RT-PCR检测诱导前后mdr1、MRP、TopoⅡα、GSTπ和VEGF mRNA的表达情况。结果诱导后的HL60/VCR耐药细胞不仅对VCR高度耐药,对其他类化疗药物亦具有交叉耐药性;与HL60相比,HL60/VCR的mdr1、TopoⅡα和VEGF mRNA的表达明显增强,GSTπmRNA的表达无明显变化;HL60和HL60/VCR均不表达MRP mRNA。结论耐药基因mdr1和TopoⅡα以及VEGF共同参与HL60/VCR多药耐药的形成。     

多耐药基因在乳腺癌组织中表达及临床意义

目的全面了解乳腺癌内源性耐药情况,实现肿瘤病人个体化化疗。方法应用荧光定量PCR方法检测51例术前未经化疗的乳腺癌和癌旁组织中mdr1、MRP、LRP、GST-π、TOPOⅡα、BCRP基因表达。结果这6个多药耐药基因在乳腺癌组织和癌旁组织中的阳性表达率均有显著统计学意义;mdr1、LRP、GST-π、TOPOⅡα在乳腺癌组织和癌旁组织之间的表达水平无显著统计学意义（P〉0.05）;MRP和BCRP在乳腺癌组织中的表达水平显著高于其在癌旁组织中的表达水平,差异有统计学意义（P〈0.05）。结论 MRP和BCRP可能与乳腺癌的内源性耐药有关,mdr1、LRP、GST-π、TOPOⅡα的表达可能与乳腺癌的内源性耐药无关,乳腺癌患者进行术前的新辅助化疗是可行的。     

32例肝癌组织中多药耐药基因及其产物P-糖蛋白的实验研究

探讨肝癌组织中mdr－1（多药耐药基因）mRNA及P－170（P－糖蛋白）的表达水平，采用RT－PCR及免疫组织化学SP法检测32例肝癌组织中mdr－1mRNA和P－糖蛋白的表达．发现不仅肝癌组织中mdr－1和P－糖蛋白的表达显著高于对照组，而且转移组中P－糖蛋白的表达高于非转移组．提示检测mdr－1／P－gp对肝癌制订治疗方案，判断疗效及MDR逆转剂的应用具有重要的临床意义；mdr－1mRNA／P－gp的过表达可能与肝肿瘤的转移预后有关．     

脊索瘤细胞系CM-319中放化疗抵抗相关基因的表达及临床意义

[目的]探讨多药耐药相关基因如缺氧诱导因子1d（HIF-1α）、多药耐药基因（MDR1）及多药耐药相关蛋白（MRP1）在脊索瘤细胞系CM－319中的表达及临床意义。[方法]用RT—PCR检测HIF－1α、MDR1、MRP1基因表达,间接免疫荧光及免疫细胞化学Envision法检测HIF－1α、MRPl蛋白在CM－319中的表达情况,并分析其与放化疗抵抗的关系。[结果]常氧条件下,在脊索瘤细胞系中能检测到HIF～1α及MRP1 mRNA的表达,但未检测到MDR1 mRNA的表达（P〈0．01）,间接免疫荧光及免疫细胞化学可以检测到HIF-1α表达在细胞浆及核中,而MRP1主要表达在细胞浆中。[结论]HIF-1α与MRP1的过度表达在脊索瘤的放化疗抵抗中可能具有重要作用,而MDR1表达未被检测到,提示脊索瘤的放化疗抵抗主要与HIF－1α和MRP1相关。     

三种肿瘤耐药基因在非小细胞肺癌中的表达及临床意义

目的探讨肺耐药蛋白（Lung resistance protein，LRP），多药耐药蛋白（Multldrug resistance—associated protein，MRP）和多药耐药基因（Multidrug resistance，MDR1）的mRNA在非小细胞肺癌（Non-small cell cancer，NSCLC）中共表达及临床意义。方法RT—PCR检测NSCLc冰冻组织中上述耐药基因的mRNA水平。结果LRP、MRP、MDR1mRNA阳性率分别为71．2％、81．8％和37．9％；MRP与、MDR1、MRP与LRP、LRPYUMDR1及MRP、LRPYUMDR1共表达者分别为16．7％（11／66）、53．0％（35／66）、19．7％（13／66）及12．1％（8／66）。LRP与MRP阳性相关（t=0．47，P=0．001），LRP、MRP与MDR1无相关性（r=0．98，P=0．0r77；r=0．25，P=0．053）．3种耐药基因表达在NSCLC各期、各分化组中差异无显著性（P≥0．05）。肺腺癌换了有效组LRP、MBPmRNA（0．53±0．08；0．41±0．01）及鳞癌化疗有效组LRPmRNA表达（0．42±0．03）明显低于换了无效组（1．14±0．3，0．82±0．04，0．97±0．01，P〈0．05）；LRP与MRP、LRP、MRP与MDR1共表达者，中位生存期明显缩短（P〈0．05）。多变量Cox回归分析，仅LRP＋MRP、LRP＋MRP＋MDR1共表达有预后意义。结论非小细胞肺癌原发耐药与LRP、MRP、MDR1共同作用有关。     

原发性肾癌组织中MDR1和MRP基因的表达

①目的　研究肾癌组织中多药耐药 (MDR1)基因和多药耐药相关蛋白 (MRP)基因的mRNA表达及其临床意义。②方法　应用定量逆转录聚合酶链反应 (RT PCR) ,检测 2 0例原发性肾癌组织、10例正常人肾脏组织新鲜标本MDR1和MRP基因的mRNA表达水平。③结果　正常肾脏组织和肾癌组织均有MDR1和MRP基因表达 ,肾癌组织MDR1基因表达水平低于正常肾脏组织 ,MRP基因表达水平高于正常肾脏组织 ,差异有显著性 (t=2 .2 93,2 .96 8,P <0 .0 5 ,0 .0 1)。MDR1和MRP基因的表达与肾癌的病理类型、病理分期和组织学分级无关 ,与肾癌病人的无进展生存期无关 ,正常肾脏组织的MDR1基因和MRP基因的表达呈高度正相关关系 (r =0 .932 ,P<0 .0 1) ;肾癌组织MDR1基因和MRP基因的表达无明显相关关系。④结论　MDR1基因和MRP基因复合表达与肾癌固有的多药耐药现象有关     

拓扑异构酶ⅡαRNA小分子干扰片段表达载体的构建与鉴定

目的：构建拓扑异构酶ⅡαRNA小分子干扰片段（TopoⅡαsiRNA）的真核表达载体并进行表达鉴定。方法：（1）根据GeneBank表达序列标签（Esr）数据库设计4对TopoⅡa基因siRNA的小分子片段。（2）采用RT—PCR方法检测细胞中的To—poⅡα表达并确定受试细胞。（3）将最佳沉默siRNA片段克隆到psilencer4．1-CMV-neo载体上,质粒DNA直接测序确定克隆成功。（4）采用脂质体法将TopoⅡa—siRNA DNA转染至受试细胞。并采用有限稀释法和G418加压筛选并培养稳转及对照细胞。（5）分别采用RT—PCR和Western blot方法测定稳转及对照细胞系TopoⅡαmRNA和蛋白表达。结果：（1）SKOV3／DDP细胞中TopoⅡαmRNA表达最高,与其亲本细胞SKOV3相比较,差异有统计学意义（P〈0．05）。（2）以TopoⅡα-4302siRNA片段沉默TopoⅡαmRNA表达最强（P〈0．01）。（3）重组阳性克隆经测序鉴定证实TopoⅡa-4302siRNA克隆成功。（4）RT—PCR和Western blot检测结果显示转染TopoIIa-4302siRNA质粒DNA后能抑制SKOV3／DDP细胞中的TopoⅡα基因表达。结论：成功构建psilencer4．1-CMV-neo—TopⅡα—siRNA重组表达载体并稳转至SKOV3／DDP细胞系。为下一步探讨TopoⅡα基因在卵巢癌多药耐药中的作用提供了实验基础。     

多药耐药相关蛋白和肺耐药蛋白在胃癌中的表达

目的：检测多药耐药相关蛋白（MRP）和肺耐药蛋白（LRP）在胃癌组织中的表达，并探讨其与临床病理特征的关系。方法：采用免疫组织化学法，检测52例患者胃癌组织和30例慢性胃炎组织中MRP及LRP的表达。结果：在52例胃癌组织和30例胃炎组织中，MRP的阳性表达率分别为32.69%（17例）、10％（3例），LRP的阳性表达率分别为63.46%（33例）、33.33%（10例），差异均有显著性意义（P＜0.05）。MRP的表达与胃癌病理分期和分化程度相关（P＜0.05）；LRP的表达与淋巴结转移相关（P＜0.05）。两蛋白在胃癌中的表达呈正相关（P＜0.05）。结论：MRP和LRP在胃癌组织中均有较高的表达，两者均可能是胃癌原发性多药耐药（MDR）的一种重要机制，且两者可能具有协同作用；临床上检测该两蛋白的表达，有利于为胃癌患者制定更加合理的综合治疗方案。     

多药耐药基因产物LRP、GST-π、TopoⅡ在大肠癌中的表达及临床意义

目的探讨大肠癌组织中多药耐药（MDR）基因产物肺耐药相关蛋白（LRP）、谷胱甘肽-S-转移酶π（GST-π）、拓扑异构酶Ⅱ（TopoⅡ）的表达及临床意义。方法应用免疫组织化学Max Vision^TM法检测122例大肠癌组织中LRP、GST-π和TopoⅡ的表达情况,并结合临床病理因素进行分析。结果①在大肠癌组织中LRP、GST-π和TopoⅡ表达的阳性率分别为88．5％。81．1％和77．05％;②LRP表达与性别、年龄、肿瘤大小、部位、临床分期、浸润深度、组织学类型等临床病理因素均无明显相关性（P〉0．05）;③GST-π在高、中分化腺癌中的阳性表达率明显高于低分化腺癌（P〈0．05）;④TopoⅡ的表达与大肠癌发生年龄有关,年轻患者其TopoⅡ的表达明显高于≥59岁者（P〈0．05）。结论在未化疗过的大肠癌组织中,LRP、GST-π、TopoⅡ均有不同程度的高表达,其表达差异与其临床病理学特点具有相关性。因此,联合检测多药耐药基因,对于判断大肠癌患者的预后以及有效的个性化治疗具有重要意义。     

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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