三种多药耐药基因产物在胃癌组织中的表达及其与p16、p53蛋白的关系

目的：探讨三种多药耐药基因产物P-糖蛋白（Pgp）、胎盘谷胱甘肽-S-转移酶（GST-π）和拓扑异构酶Ⅱ（TopoⅡ）在不同类型胃癌组织中的表达及其与p16、p53蛋白的关系.方法：用免疫组化染色法检测各种物质表达情况。结果：Pgp、GST-π在各组胃癌中表达的阳性率无显著性差异（P〉0．05），但其阳性程度则不同（P〈0．05）：TopoⅡ在低分化腺癌和黏液细胞癌的表达显著高于高分化腺癌和黏液腺癌（P〈0．05）。抑癌基因产物p16、p53在不同类型胃癌组织中的表达无显著性差异（P〉0．05）：结论：抑癌基因的状态与肿瘤耐药性可能有关，p53阳性的肿瘤可能对化疗的敏感性较低。     

突变型p53与胃癌细胞多药耐药性关系的研究

目的：研究胃癌细胞中突变型p53和MDR-1基因的表达及其与不同化疗药物敏感性的关系。方法：将突变型p53、sv40Tag（封闭p53）导入胃癌细胞株SGC-7901中，研究胃癌细胞中MDR-1基因表达的变化；用MTT法比较各组细胞对化疗药的敏感性。结果：导入突变型p53细胞株的MDR-1基因mRNA表达比导入突变型p53＋sv40Tag细胞株、对照组MDR-1基因mRNA表达强；导入突变型P53细胞株对5-氟脲嘧啶（5-Fu）耐药性与导入突变型P53＋sv40Tag细胞株和对照组比较均有显著性差异（P〈0．05），而后两者之间耐药性差异无显著性（P〉0．05）；导入突变型p53细胞株和导入突变型p53＋sv40Tag细胞株对阿霉素（ADM）耐药性与对照组比较均有显著性差异（P〈0．05），而前两者之间对ADM的耐药性差异无显著性（P〉0．05）。导入突变型p53细胞株、导入突变型p53＋sv40Tag细胞株及对照组细胞株对顺铂（CDDP）耐药性均无显著性差异（P〉0．05）。结论：突变型p53能促进MDR-1 mRNA表达，与肿瘤细胞发生多药耐药密切相关。     

人非小细胞肺癌细胞药物敏感性检测及其与耐药因子p53抗体和GST-π表达的关系

目的：研究人非小细胞肺癌（NSCLC）细胞对常用抗肿瘤药物的耐药情况及其与两种耐药因子p53抗体和GST-π表达的关系。方法：对58例NSCLC手术标本进行原代细胞培养,然后以MTT法检测其对顺铂（DDP）、长春新碱（VCR）、足叶乙甙（VP16）、羟基喜树碱（HCPT）、阿霉素（ADM）及环磷酰胺（CTX）6种临床常用化疗药物的敏感性;同时以酶联免疫吸附测定法（ELISA）检测患者血清中p53抗体及GST-π两种耐药因子表达情况。结果：6种药物的有效率（即化疗药物对肿瘤细胞的活性抑制率）分别为DDP 41.4%、VCR 24.1%、 VP16 22.4%、 HCPT 20.7%、ADM 17.2%及CTX 17.2%;p53抗体及GST-π表达情况不同,其表现出不同耐药程度。结论：以MTT法检测NSCLC的药物敏感性,尤其对p53抗体及GST-π表达情况的检测,对于指导肺癌化疗是可行而且必要的。     

多耐药基因在乳腺癌组织中的表达及价值

目的：观察多药耐药基因（MDR1）及其编码的糖蛋白（P－gp）在乳腺癌组织中的表达及临床价值。方法：选取病历资料完整的乳腺癌根治术乳腺组织标本84份,使用S－P 法免疫组化法染色检测P－gp、谷光甘肽S转移酶（ GST－π）及热休克蛋白（ HSP70）、p53的表达情况,采用Kendall＇s taub相关性分析P－gp、p53、GST－π、及HSP70、p53之间协同表达关系。结果：P－gp 表达阳性率为50％（42／84）,HSP70表达阳性率为61．9％（52／84）,p53表达阳性率为52．4％（44／84）,GST－π表达阳性率为40．5％（34／84）;相关性分析显示,GST－π与P－gp无协同表达（r＝0．146,P＞0．05）,HSP70与p53有协同表达（r＝0．626,P＜0．05）,p53与P－gp有协同表达（r＝0．763,P＜0．05）;P－gp表达对对乳腺癌10年生存率有明显影响。 COX模型乳腺癌预后多因素分析表明,年龄因素、GST－π表达均不具有独立的预后意义;临床分期、组织学分级、P－gp 表达、p53表达、HSP70表达均具有独立的预后意义。结论：同时检测MDR1、HSP 7、p53和GST－π的表达,可为乳腺癌临床耐药性的判断提供更为全面的信息。     

乳腺癌3种耐药基因、p53蛋白、雌和孕激素受体的表达及相关性研究

目的研究多药耐药基因P-糖蛋白（P-gp）、谷胱甘肽-S-转移酶π（GST-π）和DNA拓扑异构酶Ⅱ（TopoⅡ）、p53蛋白、雌激素受体（ER）和孕激素受体（PR）在乳腺癌的表达及其相关性。方法采用免疫组织化学SABC法,检测119例乳腺癌标本P-gp、GST-π、TopoⅡ、p53、ER和PR的表达。结果P-gp、GST-π、TopoⅡ的表达率分别为52.1%、66.4%和66.4%,p53、ER、PR的表达率分别为56.3%、42.0%和41.2%;乳腺癌中有淋巴结转移组的p53表达率高于无淋巴结转移组（P〈0.05）,淋巴结转移组的GST-π、ER表达率低于无淋巴结转移组（P〈0.05）;GST-π、TopoⅡ与p53间表达呈正相关（P〈0.05）;P-gp、GST-π与ER间表达呈负相关（P〈0.05）。结论p53基因与GST-π、TopoⅡ存在协同表达的关系,GST-π、ER阴性是某些乳腺癌对化疗药物不敏感,导致内分泌治疗失败及影响预后的因素。     

腺病毒介导p53基因逆转乳腺癌耐药的实验研究

目的探讨腺病毒介导p53基因（Ad-p53）对人乳腺癌阿霉素（ADM）耐药细胞株MCF-7／ADM的耐药性及多药耐药基因1（MDR1）的影响。方法以Ad-p53转染MCF-7／ADM细胞株,流式细胞术检测p53蛋白变化;锥虫蓝活细胞拒染法观察细胞生长情况;MTT法观察MCF-7／ADM细胞对阿霉素耐药性的变化,实时荧光RT—PCR法检测MDR1 mRNA变化。结果流式细胞术观察到MCF-7／ADM细胞经MOI50的Ad-p53作用48h后,p53蛋白表达率由10．24％升高到36．20％;细胞抑制率为7．4％（P=0．003）;逆转MCF-7／ADM对ADM的耐药倍数11．6倍（P=0．001）;实时荧光RT-PCR检测结果显示MDR1 mRNA相对表达量由1．25±0．01下降至0．91±0．01（P=0．011）。结论腺病毒介导p53基因能抑制MCF-7／ADM细胞MDR1基因的表达,并能部分逆转MCF-7／ADM的耐药性,增加阿霉素化疗敏感性。     

p53及耐药相关基因的表达与非小细胞肺癌化疗耐药性的研究

目的探讨p53突变与耐药相关基因表达的相关性及其与肺癌化疗耐药的关系。方法免疫组化检测60例非小细胞肺癌组织的p53和耐药相关蛋白P-gp、MRP、LRP、GST-π的表达并分析其相关性及其与肺癌化疗耐药的关系。结果 P-gp、MRP、LRP、GST-π、p53阳性率分别为53.3%、50.0%、75.0%、73.3%、68.3%。LRP在腺癌中表达最高,p53在鳞癌中表达最高。p53的表达与肿瘤细胞分化程度、有无淋巴结转移和TNM分期密切相关,其余4种耐药相关蛋白表达差异均无统计学意义（P〉0.05）。p53和一种或一种以上耐药相关蛋白共表达率达94.8%,且p53与P-gp、GST-π的表达存在正相关性（P均〈0.05）。p53蛋白的表达与化疗疗效显著相关,p53阴性化疗有效率（60.5%）明显高于p53阳性者（28.3%,P〈0.05）。结论肺癌组织p53突变与耐药相关蛋白的表达有相关性,p53结合耐药相关蛋白检测可以预示患者的化疗耐药性,对个体化化疗方案的制定具有指导意义。     

miR-141-3p表达与卵巢癌细胞顺铂化疗敏感性的相关性研究

［摘要］ 目的 探讨miR-141-3p在卵巢癌细胞对顺铂耐药中的表达和作用。 方法 采用实时荧光定量PCR法检测A2780/DDP细胞中miR-141-3p的表达水平;下调/过表达miR-141-3p后,采用CCK-8法检测卵巢癌细胞对顺铂的增殖率并计算药物IC50;采用Western blot法检测增殖相关蛋白（proliferating cell nuclear antigen,PCNA）表达水平。 结果 miR-141-3p在顺铂耐药的卵巢癌细胞株A2780/DDP中的表达显著高于顺铂敏感的卵巢癌细胞株A2780（P＜0.05）。与对照组比较,A2780细胞中过表达miR-141-3p后可显著增加细胞对顺铂的IC50,增殖相关蛋白PCNA表达亦增加（P＜0.05）。与对照组比较,A2780/DDP细胞中下调miR-141-3p表达后,细胞对顺铂的IC50显著下降,增殖相关蛋白PCNA表达下降（P＜0.05）。 结论 miR-141-3p在顺铂耐药卵巢癌细胞的耐药机制中表达增加,下调miR-141-3p可增加顺铂耐药的卵巢癌细胞对顺铂的敏感性。     

mdr1、MRP和GST-π在非小细胞肺癌多药耐药机制中的作用

目的探讨非小细胞肺癌的化疗耐药性和参与介导多药耐药的相关基因和蛋白mdrl、MRP、GST-π的表达，对比分析非小细胞肺癌的化疗耐药性与耐药相关基因表达的关系，明确各耐药相关基因在介导非小细胞肺癌耐药机制中的作用。方法应用肿瘤细胞体外培养和MTT法对91例未经化疗的非小细胞肺癌进行体外化疗药物敏感性测试，观察非小细胞肺癌分别对环磷酰胺、阿霉素、顺铂＋氟尿嘧啶3种单药和联合用药方案耐药情况和总的耐药情况，并用免疫组织化学方法对其进行3种耐药相关基因（mdr1、MRP以及GST-π）表达的检测，并将其表达情况与对应的化疗耐药性进行相关分析。结果91例NSCLC化疗敏感性检测结果显示：53例（58．2％）对环磷酰胺耐药，51例（56．0％）对阿霉素耐药，42例（46．2％）对顺铂＋氟尿嘧啶耐药。其中，19例（20．9％）对3种用药均敏感，27例（29．8％）对3种用药均耐药，其耐药性与组织学类型和分化程度无关（P〉0．05）。P—gp、MRP和GST-π在91例非小细胞肺癌中总的阳性表达率分别为：58．2％、73．6％和64．8％。鳞癌和腺癌相比P—gP、MRP、和GST-π的表达差异无显著性（P〉0．05）。P—gP、MRP和GST-π的表达与对3种化疗用药的耐药性均呈显著正相关（P〈0．05），并且不同表达程度问差异也有显著性（P〈0．05）。结论P—gp、MRP和GST-π在非小细胞肺癌中均有较高的阳性表达并共同介导参与了非小细胞肺癌固有化疗耐药的机制。     

阿司匹林对顺铂抗卵巢癌作用增敏效应的体外实验研究

目的 观察阿司匹林对顺铂抗卵巢癌效应的影响并对其相关机制进行初步探讨。方法 MTT法检测阿司匹林＋顺铂与单纯顺铂或阿司匹林对卵巢癌顺铂耐药细胞株（COC1／DDP）细胞生长曲线的影响，流式细胞仪分别检测不同组别多药耐药相关蛋白P—gp、MRP、GSTπ及核转录因子NF—κB的表达变化。结果 单纯阿司匹林和顺铂对COC1／DDP细胞生长的影响较弱（P〉0．05），阿司匹林＋顺铂显著抑制COC1／DDP细胞生长（P〈0．05）。P—gp在COC1／DDP细胞系呈低表达状态，MRP、GSTπ表达率在各组间差异无显著性（P〉0．05），阿司匹林＋顺铂组核转录因子NF-κB的表达量降低（P〈0．05）。结论 阿司匹林可以增强顺铂的抗卵巢癌作用，其作用可能与核因子NF—κB的表达量降低有关。     

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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