自然流产患者滋养细胞肝素表皮生长因子的表达及意义

目的　探讨自然流产患者滋养细胞肝素表皮生长因子 (HB EGF)的表达及其与滋养细胞增殖细胞核抗原 (PCNA)的关系。方法　选择自然流产患者和正常妊娠者各 2 0例 ,采用免疫组织化学法分析滋养细胞HB EGF和PCNA的表达。结果　HB EGF主要存在于细胞质 ,合体滋养层和细胞滋养层均有表达 ,部分流产滋养细胞不表达。自然流产患者滋养细胞HB EGF和PCNA的表达显著低于正常妊娠者 (P <0 .0 1) ,成正相关 (r =0 .4 5 4 ,P <0 .0 1)。结论　HB EGF的表达和滋养细胞增殖相关 ,HB EGF下降可能与自然流产的发生相关     

在体诱导表皮细胞去分化的初步实验研究

目的 在体诱导表皮细胞去分化,探索与表皮细胞去分化有关的信号通路.方法 包皮皮片去除皮下组织,用中性蛋白酶分离表皮,Ⅳ型胶原反复粘贴并牵拉表皮去除基底细胞层.处理后表皮片移植于裸鼠全层皮肤下,分别于3、5、7 d取出移植皮片,采用免疫组织化学染色、流式细胞仪检测、Western blot和RT-PCR等方法检测皮片移植前后表型的改变和ERK MAPK通路各信号分子表达的变化情况.结果 去基底细胞层处理的表皮片干细胞标志物CK19和β1整合素染色阴性;移植后5 d,存活皮片CK19和β1整合素染色呈多层分布,而不是正常表皮中的单层分布.流式细胞仪检测结果显示,表皮片移植后CK19阳性细胞和β1整合素阳性细胞由移植前的0.00%分别增加到7.54%和5.24%,而CK10阳性细胞由99.62%下降为86.56%.Western blot和PCR检测也证实CK19和β1整合素蛋白水平和mRNA水平表达在移植后明显增强.ERK及上下游信号分子(p-Raf、p-MEK1/2、p-ERK1/2和c-myc)表达增强.t-MEK1/2和t-ERK1/2移植前后表达无显著差异(P＞0.05).结论 处于终末分化阶段的表皮细胞可以向干细胞状态逆转,这个过程可能与ERK MAPK信号通路有关.     

转染hEGF基因的表皮细胞G418长期筛选后的表达

目的:探讨外源性基因在转染表皮细胞后稳定表达情况.方法:选用构建的pBK-Signal-EGF质粒,在脂质体LipofectAMINE的介导下,转染培养成60%～70%连片的人表皮细胞,然后用G418长时间筛选出稳定表达的细胞克隆.大量培养传代后,通过ELISA试剂盒检测培养上清中表皮细胞生长因子(EGF)外源性基因稳定表达水平.结果:(1)构建的人表皮细胞生长因子(hEGF)质粒可成功转染到人表皮细胞中;(2)转基因表达在传4代后仍可存在;(3)hEGF表达水平6周内可在培养基中测出.结论:外源性hEGF基因可以在表皮细胞中稳定表达.     

整合素β1在人表皮细胞株HaCaT增殖中影响的研究

目的探讨β1整合素对表皮细胞增殖的影响.方法将重组整合素β1小干扰RNA表达载体(siIntegrin β1)转染到HaCaT细胞株中,应用免疫印迹(Western blotting)方法检测靶基因的抑制情况,应用细胞计数法检测表皮细胞增殖情况.结果重组siIntegrinβ1 转染HaCaT细胞株能够抑制靶基因整合素β1 的表达,抑制细胞增殖.结论在人表皮细胞株HaCaT中抑制整合素β1表达可抑制HaCaT增殖,为进一步研究整合素在表皮细胞中的基因表达调控奠定了基础.     

一种稳定、有效的表皮细胞基因导入方法的确立

目的：探索一种表皮细胞基因转染的稳定有效方法。方法：我们用五种方法将报告基因ｐＳＶ－β转染培养的表皮细胞,用原位染色方法检测并结合图像分析比较这五种方法的转染后表达情况。结果 转染后２４ｈ表皮细胞开始表达报告基因,７２ｈ达到高峰,脂质体结合１０％甘油休克法的转染效率达到４．２％。结论 表皮细胞难于转染,脂质体结合１０％甘油休克法是一种稳定、有效的转染方法。     

~(60)Co照射后小鼠表皮Langerhans细胞的变化及对异体植皮的影响

本实验用~(60)Co照射Blab/c小鼠,照射后1天与3天取背部皮肤。(1)经ATP酶染色方法,显示表皮Langerhans细胞(LC),观察其ATP酶含量的变化、形态变化及其在表皮的密度改变;(2)免疫组分染色方法,观察Ia阳性LC的密度改变及形态变化;(3)电镜观察其超微结构的变化;(4)同时进行异体皮肤移植,观察皮片存活期的变化。结果:经~(60)Co照射后,小鼠表皮LC形态功能受到不同程度的损害,其密度减少,表达Ia抗原功能下降。认为这是异体植皮后移植物存活期延长的主要原因。     

α干扰素对尖锐湿疣患者皮损表皮细胞凋亡和增殖的影响

目的　研究α -干扰素对尖锐湿疣患者皮损表皮细胞凋亡和增殖的影响。方法　采用免疫组织化学方法和末端脱氧核苷酸转移酶介导的末端标记技术 (TUNEL法 ) ,检测 40例患者皮损表皮细胞凋亡和增殖状态 ,并对细胞凋亡和PCNA阳性细胞进行计数。结果　α 干扰素治疗后PCNA阳性细胞数明显减少而凋亡细胞数增加 ,与治疗前比较差异均有显著性 (P <0 .0 5)。结论　INF α能促进细胞凋亡及抑制细胞增殖     

丙型肝炎病毒及乙型肝炎病毒联合基因免疫实验研究

目的 为HCV／HBV重叠或混合感染的防治寻求新的高效联合基因免疫策略。方法 分别将与HCV核心区基因互补的eDNA和HBV核心区基因克隆于真核表达载体(pRSC),构建pRSC-HBV／HCV,转染小鼠骨髓瘤细胞(SP2／0),通过免疫荧光和Western印迹法检测蛋白的表达,免疫Balb/c小鼠。用酶联免疫法、乳酸脱氢酶释放法及荷瘤试验观察小鼠体液免疫应答及细胞免疫应答。结果 pRSC-HBV／HCV转染的SP2／0细胞可见HBeAg及HCV核蛋白染色阳性荧光细胞,相对分子质量14000及21000处均可见蛋白条带,Western印迹分析可见特异性的蛋白条带。10只免疫鼠中全部出现抗-HCV及抗-HBV抗体,而对照组(n=10)全阴性。免疫组小鼠脾细胞对转染pRSC-HBV／：HCV的SP2／0细胞的细胞毒活性明显高于对照组,荷瘤试验显示免疫组小鼠注射转染pRSC-HBV／HCV的SP2／0细胞后肿瘤生长缓慢。结论 pRSC-HBV／HCV在Balb／c小鼠可同时诱导对HBeAg及HCV核蛋白的体液免疫应答及细胞免疫应答。     

Mfn2基因过表达对人乳腺癌MCF-7细胞增殖及EGFR、EGF蛋白表达的影响

目的 通过使人乳腺癌MCF-7细胞过表达线粒体融合素基因-2(Mfn2),研究外源性Mfn2基因对MCF-7细胞增殖及对表皮生长因子受体(EGFR)、表皮生长因子(EGF)蛋白表达的影响.方法 实验分为对照组、转染空质粒pEGFP-N1组、转染Mfn2质粒的pEGFP-Mfn2组.转染48 h后,检测各组细胞的转染效率、Mfn2mRNA及Mfn2蛋白表达.检测各组MCF-7细胞增殖情况、各组MCF-7细胞周期分布情况.同时检测各组EGFR及EGF蛋白表达情况.结果 转染48 h后pEGFP-N1组及pEGFP-Mfn2组转染效率分别为(49.15±2.04)％及(51.10±2.18)％,高于对照组[(0.58±0.21)％,P＜0.05];pEGFP-Mfn2组的Mfn2 mRNA及Mfn2蛋白表达均显著高于对照组及pEGFP-N1组(P＜0.05);pEGFP-Mfn2组MCF-7细胞增殖抑制率显著高于其余两组(P＜0.05),细胞周期主要阻滞于G0/G1期;pEGFP-Mfn2组EGFR和EGF蛋白表达水平显著低于其余两组(P＜0.05).结论 Mfn2基因过表达可显著抑制MCF-7细胞增殖,其机制可能与Mfn2基因过表达导致了EGFR及EGF表达下调有关.     

庆大霉素中毒后雏鸡耳蜗毛细胞再生和表皮生长因子的促再生作用

目的:观察雏鸡庆大霉素(GM)中毒后耳蜗毛细胞的再生及表皮生长因子(EGF)对其再生的影响.方法:给雏鸡注射GM10d,其后再注射EGF5d,分别用光镜、扫描电镜及透射电镜观察耳蜗基底乳头(BP)形态学变化;用增殖细胞核抗原(PCNA)免疫组织化学染色观察BP细胞增殖.结果:停用GM后1d,BP毛细胞损失平均约51%,毛细胞形态不规则,线粒体和表皮板肿胀,细胞自溶破坏.停用GM后5d,支持细胞表面增宽,中间出现小的表皮板和短的听毛,此为新的毛细胞.14d新生毛细胞形态规则,21d发育成熟,BP形态接近正常.PCNA阳性细胞主要是支持细胞和透明细胞.EGF组毛细胞再生活跃,PCNA阳性细胞核明显增多.停用GM后10d,毛细胞数明显比GM组多,14dBP形态接近正常.结论:GM耳中毒的雏鸡耳蜗毛细胞可以再生;再生的毛细胞可能来源于支持细胞和透明细胞;EGF可促进这一过程.     

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.