内皮素及其受体对心脏细胞肥大与增殖的作用

目的观察内皮素-1(ET-1)及其受体(ETR)对心肌细胞肥大和心脏成纤维细胞增殖的作用。方法体外乳鼠心肌细胞和心脏成纤维细胞培养,一定浓度的ET-1作用细胞24h,以3H-胸腺嘧啶核苷(3H-TdR)、3H-亮氨酸(3H-Leu)掺入法测定细胞DNA、蛋白质合成,Bradford法测定细胞总蛋白含量,RT-PCR法测定心肌细胞心钠素(ANP)mRNA的表达;用针对ETA受体(ETAR)、ETB受体(ETBR)的特异性拮抗剂BQ123、BQ788分别阻断两个受体,观察两种受体的作用。结果ET-1显著促进心肌细胞和心脏成纤维细胞3H-TdR、3H-Leu掺入,总蛋白含量增加,ET-1的作用呈剂量依赖性,并且使心肌细胞ANP mRNA表达明显增加,ET-1的作用可被ETAR拮抗剂BQ123明显抑制,ETBR拮抗剂BQ788对此无影响。结论ET-1促进心肌细胞肥大和心脏成纤维细胞增殖,ET-1的作用通过ETAR介导,ETBR对此无明显作用。     

表皮生长因子对前列腺癌PC-3细胞分泌内皮素-1的影响

目的:探讨表皮生长因子(epidermal growth factor,EGF)对激素非依赖性前列腺癌(hormone refractory prostate cancer,HRPC)PC-3细胞中内皮素-1(endothelin-1,ET-1)分泌和mRNA表达的影响.方法:EGF干预后,RT-PCR测定PC-3中ET-1mRNA的表达;放免检测ET-1蛋白分泌;不同剂量EGF干预后,放免检测ET-1分泌量的变化.结果:EGF干预后,ET-1mRNA表达上调,ET-1蛋白分泌增加,与对照组比较,差异有显著性(P＜0.05);不同剂量EGF干预后,ET-1分泌随EGF浓度增加而增加,单因素方差分析表明,不同剂量的EGF对PC-3细胞ET-1分泌的影响不同,差异具有显著性(P＜0.05).结论:EGF可上调激素非依赖性前列腺癌PC-3细胞中ET-1mRNA表达及蛋白分泌,在前列腺癌的进展中起协同作用,为HRPC的治疗提供了分子生物学基础.     

内皮素-1及其受体在子宫内膜异位症中的表达及意义

目的 研究内皮素-1(ET-1)及其受体(ETAR、ETBR)在子宫内膜异位症(EMs)患者在位子宫内膜、异位子宫内膜以及对照组妇女子宫内膜中的表达,并探讨其在EMs发病机制中的作用.方法 采用免疫组织化学(SP)法检测48例EMs患者(EMs组)在位内膜和异位内膜以及30例宫颈上皮内瘤变患者(对照组)在位内膜中ET-1、ETAR、ETBR的表达.结果 ET-1、ETAR在EMs组在位内膜和异位内膜中的表达均高于对照组(P均＜0.01);ET-1、ETAR在EMs组在位内膜中的表达均高于异位内膜(P均＜0.01);ET-1和ETAR在EMs组在位内膜和异位内膜中的表达均呈显著正相关(相关系数分别为0.970、0.968,P均＜0.05).ETBR在EMs组在位内膜、异位内膜以及对照组内膜三者间的表达差异不具统计学意义.在子宫内膜的不同的组织学周期,ET-1、ETAR、ETBR表达差异均不具统计学意义.在EMs组不同临床期别(r-AFS分期)内膜,ET-1、ETAR、ETBR表达差异均不具统计学意义.结论 ET-1和ETAR在EMs发生发展中具有一定作用.     

丹参酚酸B盐抑制内皮素-1所致大鼠门静脉压力升高的药效及其作用机制

目的:研究丹参酚酸B(salvianolicacidB,SA-B)盐对内皮素-1(endothelin-1,ET-1)致大鼠门静脉压力升高的抑制效应,并探讨其作用机制。方法:28只大鼠随机分为ET-1组、ET-1 SA-B组、ET-1 ETAR阻断剂(BQ-123)组和ET-1 ETBR阻断剂(BQ-788)组。ET-1 SA-B组大鼠给予SA-B溶液灌胃,其余3组大鼠给予饮用水灌胃,共5d;ET-1 ETAR阻断剂和ET-1 ETBR阻断剂两组于实验前30min从大鼠股静脉分别注入BQ-123和BQ-788,然后各组大鼠经股静脉以3μg/kg剂量注射ET-1溶液,观察大鼠门静脉压力、颈动脉压力和心率的变化。结果:注入ET-1后大鼠门静脉压力升高,以ET-1组升高幅度最大,预先灌服SA-B溶液或提前注入了ETR阻断剂的大鼠门静脉压力虽然也升高,但升高幅度较ET-1组显著降低。结论:SA-B在体内能够明显抑制ET-1所致的门静脉压力升高,有类似ETR阻断剂的作用。     

内皮素A受体拮抗剂BQ123对前列腺癌PC3细胞增殖与凋亡的影响

目的:观察内皮素A受体拮抗剂BQ123对人前列腺癌(PCA)PC3细胞株增殖与凋亡的影响,探讨内皮素A受体拮抗剂对PCA细胞的体外抗肿瘤效应。方法:采用四甲基偶氮唑蓝(MTT)比色法、划痕损伤实验、细胞迁移实验观察BQ123对人PCA PC3细胞株增殖的抑制效应,利用Annexin V-FITC/PI染色和流式细胞术检测BQ123诱导肿瘤细胞凋亡的作用及其与细胞周期的关系。结果:BQ123对PCA PC3细胞株有抑制作用,并表现出良好的时效关系。细胞凋亡和细胞周期实验表明,BQ123可诱导PC3细胞株的凋亡,其诱导细胞凋亡的作用与细胞周期无关。结论:BQ123对PCA PC3细胞株增殖的抑制效应具有时间依赖性,并可诱导细胞凋亡,可为PCA的治疗提供一种新的思路。     

内皮素受体拮抗剂对肝硬变门静脉高压症大鼠门静脉压及ET-1 mRNA表达的影响

目的 :探讨内皮素受体拮抗剂在肝硬变门静脉高压症大鼠降压中的作用。方法 :32只雄性SD大鼠 ,随机分成 4组 ,每组 8只。其中模型对照组、BQ 12 3组、BQ 788组制备CCl4诱导的肝硬变模型 ,后 2组于造模成功后每d 2次分别皮下注射BQ 12 3(12 .5 μg/kg)和BQ 788(15 μg/kg) ;正常对照组 (NL) ,普通饲养 ,不做任何处理。采用生理八导仪测定门静脉压力 (PVP) ;RT PCR测定大鼠肝组织ET 1mRNA表达水平。结果 :BQ 12 3组 ,BQ 788组的PVP及肝组织ET 1mRNA表达量均较模型对照组显著降低 (P均 <0 .0 5 ) ,与正常对照组比较差异无统计学意义 ;模型对照组、BQ 12 3组、BQ 788组PVP与其ET 1mRNA的表达水平明显相关 (r分别 0 .94 4 ,0 .837和 0 .85 5 ;P均 <0 .0 5 )。结论 :应用内皮素受体拮抗剂能显著降低肝硬变门静脉高压症大鼠的PVP。     

BQ-123在动脉粥样硬化中的抗炎效应

目的 观察内皮素A(ETA)受体拮抗剂BQ-123在家兔动脉粥样硬化(AS)中的抗炎效应.方法 32只雄性新西兰大白兔随机分成4组(n=8),对照组饲喂普通饲料10周;模型组、辛伐他汀组和BQ-123组均饲喂高脂饲料10周.采用ELISA法检测耳中动脉血清中前列腺素E2(PGE2)和ET-1水平;免疫组化SP法检测主动脉组织ET-1、巨噬细胞和COX-2蛋白表达.结果 ①分组饲喂10周后,模型组、辛伐他汀组和BQ-123组血清ET-1和PGE2水平均较对照组明显升高(P<0.01);但辛伐他汀组和BQ-123组均较模型组明显降低(P<0.05,P<0.01);AS兔血清中ET-1与PGE2水平成正相关(r=0.57,P<0.01).②辛伐他汀组和BQ-123组AS斑块ET-1、巨噬细胞源泡沫细胞、COX-2蛋白阳性表达均较模型组明显降低(P<0.05或P<0.01),而BQ-123组义较辛伐他汀组进一步降低(P>0.05).结论 ET-1通过激活ETA受体可以导致家免AS斑块COX-2表达上调和PGE2生成增多,选择性ETA受体拮抗剂BQ-123在家兔AS中具有抗炎效应.     

ET-1通过上调CXCR4表达促进鼻咽癌低转移 细胞株6-10B的迁徙

 【目的】 探讨内皮素-1(ET-1)上调CXCR4表达促进鼻咽癌低转移细胞株6-10B迁徙的机制。【方法】 加入不同浓度的ET-1以及同时加入SDF-1α处理6-10B细胞,趋化实验检测ET-1对6-10B细胞迁徙能力的影响。分别采用Real-time PCR以及Western Blot方法检测ET-1上调后CXCR4在基因以及蛋白水平的变化。Western Blot方法检测用特异性的ETAR抑制剂或者PI3K/AKT/mTOR或MARK1/ERK1/2抑制剂预处理6-10细胞后,ET-1对CXCR4表达水平的变化;并探讨ET-1处理后,PI3K/AKT/mTOR以及MARK1/ERK1/2信号通路中蛋白磷酸化水平的改变。【结果】 趋化实验显示6-10B细胞丧失对SDF-1α的趋化能力,但不同浓度的ET-1刺激后6-10B细胞对SDF-1α的迁徙能力明显增强(P < 0.05),10 nmol/L ET-1的作用最明显。Real-time PCR以及Western Blot结果显示,不同浓度的ET-1处理6-10B细胞后,ET-1在基因以及蛋白的水平可以呈剂量依赖性及时间依赖性地上调CXCR4的表达。用特异性的内皮素受体A(ETAR)抑制剂或者PI3K/AKT/mTOR或MARK1/ERK1/2通路的抑制剂,能够明显抑制ET-1对CXCR4表达的上调。Western blot检测显示ET-1能激活PI3K/AKT/mTOR及MAPK1/ERK1/2信号通路。【结论】 ET-1能上调6-10B细胞功能性CXCR4的mRNA和蛋白表达,并能明显增强6-10B细胞对SDF-1α的迁徙能力。CXCR4的上调主要是通过ETAR介导,激活PI3K/AKT/mTOR和MAPK1/ERK1/2信号通路。     

BQ-123在动脉粥样硬化中的抗炎效应

目的 观察内皮素A(ETA)受体拮抗剂BQ-123在家兔动脉粥样硬化(AS)中的抗炎效应.方法 32只雄性新西兰大白兔随机分成4组(n=8),对照组饲喂普通饲料10周;模型组、辛伐他汀组和BQ-123组均饲喂高脂饲料10周.采用ELISA法检测耳中动脉血清中前列腺素E2(PGE2)和ET-1水平;免疫组化SP法检测主动脉组织ET-1、巨噬细胞和COX-2蛋白表达.结果 ①分组饲喂10周后,模型组、辛伐他汀组和BQ-123组血清ET-1和PGE2水平均较对照组明显升高(P<0.01);但辛伐他汀组和BQ-123组均较模型组明显降低(P<0.05,P<0.01);AS兔血清中ET-1与PGE2水平成正相关(r=0.57,P<0.01).②辛伐他汀组和BQ-123组AS斑块ET-1、巨噬细胞源泡沫细胞、COX-2蛋白阳性表达均较模型组明显降低(P<0.05或P<0.01),而BQ-123组义较辛伐他汀组进一步降低(P>0.05).结论 ET-1通过激活ETA受体可以导致家免AS斑块COX-2表达上调和PGE2生成增多,选择性ETA受体拮抗剂BQ-123在家兔AS中具有抗炎效应.     

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.