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1抗精神病新药阿立哌唑显示文摘人类在探索抗精神病药物的历史上从未停止过前进的脚步,传统抗精神病药是在偶然情况下被发现的,在保留其作用机制的基础上,非典型抗精神病药物增加或减少了某些作用,使之疗效更全面、安全性更高.黄文武 姜德国 2003上海精神医学2003,15,5:153
2Mammalian WTAP is a regulatory subunit of the RNA N6-methyladenosine methyltransferase显示文摘包含 methyltransferase 建筑群的象 3 一样的 methyltransferase (METTL3 ) 催化 N6-methyladenosine (m6A ) 形成,一个新奇 epitranscriptomic 标记;然而,这建筑群的性质仍然保持大部分未知。这里,我们报导人的 m6A methyltransferase 建筑群, Wilm 的肿瘤 1 伙伴蛋白质(WTAP ) 和象 14 一样的 methyltransferase (METTL14 ) 的二个新部件。WTAP 与 METTL3 和 METTL14 交往,并且为他们的本地化被要求进在 vivo 与处理因素的 pre-mRNA 并且为 m6A methyltransferase 的催化活动充实的原子点缀。RNA 的多数在 vivo 由 WTAP 和 METTL3 跳了代表包含一致 m6A 主题的 mRNAs。当 WTAP 不在时, METTL3 的 RNA 有约束力的能力强烈被减少,建议 WTAP 可以工作调整到 mRNA 目标的 m6A methyltransferase 建筑群的招募。而且,在有 photoactivatable-ribonucleoside-enhanced crosslinking 和 immunoprecipitation (同等片断) 的联合的 transcriptomic 分析说明那 WTAP 和 METTL3 调整涉及抄写并且 RNA 处理的基因拼接的表示和选择。在 zebrafish 胚胎的调停 Morpholino 的击倒的指向 WTAP 或 METTL3 引起了织物区别缺点并且增加了 apoptosis。这些调查结果提供 WTAP 可以在 m6A methyltransferase 建筑群作为一个规章的子单元工作并且在 RNA 的 epitranscriptomic 规定起一个关键作用的充分证据新陈代谢。Xiao-Li Ping Bao-Fa Sun Lu Wang Wen Xiao Xin Yang Wen-Jia Wang Samir Adhikari Yue Shi Ying Lv Yu-Sheng Chen Xu Zhao Ang Li Ying Yang Ujwal Dahal Xiao-Min Lou Xi Liu Jun Huang Wei-Ping Yuan Xiao-Fan Zhu Tao Cheng Yong-Liang Zhao Xinquan Wang Jannie M Rendtlew Danielsen Feng Liu Yun-Gui Yang 2014Cell Research2014,24,2:244
3Expression and significance of CD44s, CD44v6, and nm23 mRNA in human cancer显示文摘AIM: To investigate the relationship between the expression levels of nm23 mRNA, CD44s, and CD44v6,and oncogenesis, development and metastasis of human gastric adenocarcinoma, colorectal adenocarcinoma,intraductal carcinoma of breast, and lung cancer.METHODS: Using tissue microarray by immuhistochemical (IHC) staining and in situ hybri-dization (ISH), we examined the expression levels of nm23mRNA, CD44s, and CD44v6 in 62 specimens of human gastric adenocarcinoma and 62 specimens of colorectal adenocarcinoma; the expression of CD44s and CD44v6in 120 specimens of intraductal carcinoma of breast and 20 specimens of normal breast tissue; the expression of nm23 mRNA in 72 specimens of human lung cancer and 23 specimens of normal tissue adjacent to cancer.RESULTS: The expression of nm23 mRNA in the tissues of gastric and colorectal adenocarcinoma was not significantly different from that in the normal tissues adjacent to cancer (P>0.05), and was not associated with the invasion of tumor and the pathology grade of adenocarcinoma (P>0.05). However, the expression of nm23 mRNA was correlated negatively to the lymph node metastasis of gastric and colorectal adenocarcinoma (r = -0.49, P<0.01; r = -4.93, P<0.01). The expression of CD44s in the tissues of gastric and colorectal adenocarcinoma was significantly different from that in the normal tissues adjacent to cancer (P<0.05;P<0.01). CD44v6 was expressed in the tissues of gastric and colorectal adenocarcinoma only, the expression of CD44v6 was significantly associated with the lymph node metastasis, invasion and pathological grade of the tumor (r = 0.47, P<0.01; r = 5.04, P<0.01). CD44sand CD44v6 were expressed in intraductal carcinoma of breast, the expression of CD44s and CD44v6 was significantly associated with lymph node metastases and invasion (P<0.01). However, neither of them was expressed in the normal breast tissue. In addition, the expression of CD44v6 was closely related to the degree of cell differentiation of intraductal carcinoma of breast (x2= 5.68, P<0.05). The expressional level of nm23mRNA was closely related to the degree of cell differentiation (P<0.05) and lymph node metastasis (P<0.01), but the expression of nm23 gene was not related to sex, age, and type of histological classification (P>0.05).CONCLUSION: Patients with overexpression of CD44s and CD44v6 and low expression of nm23 mRNA have a higher lymph node metastatic rate and invasion. In addition, overexpression of CD44v6 is closely related to the degree of cell differentiation. Detection of the three genes is able to provide a reliable index to evaluate the invasion and metastasis of tumor cells.Yong-Jun Liu Pei-Song Yan Jun Li Jing-Fen Jia 2005World Journal of Gastroenterology2005,11,42:63
4MEBT/MEBO对皮肤创面愈合过程中VEGF、bFGF、EGF mRNA表达影响的研究显示文摘目的探讨MEBT/MEBO促进创面愈合的作用机制。方法建立大鼠急性损伤创面模型,观察MEBT/MEBO对模型创面组织VEGF、bFGF、EGF mRNA表达的影响。结果①创面肉芽组织生长大体情况:造模后第8天,MEBT/MEBO组、贝复济组大鼠创面肉芽组织生长情况明显好于模型组,MEBT/MEBO组和贝复济组大鼠创面较红润,可见散在的肉芽颗粒生长,模型组大鼠创面较苍白,生长缓慢。②愈合时间:MEBT/MEBO组大鼠创面平均愈合时间为(12.50±0.83)天,短于贝复济组(13.15±0.88)天,明显短于模型组(14.20±1.28)天,MEBT/MEBO组与贝复济组、模型组在愈合时间方面相比差异均有显著性(P<0.05,P<0.01)。③VEGF、bFGF、EGF mRNA表达:模型组大鼠的表达量在造模后8天时相点显著低于MEBT/MEBO组、贝复济组(P<0.01),MEBT/MEBO组在造模后8天时相点比贝复济组的表达量稍高,差异有显著性(P<0.05)。结论①MEBT/MEBO可以提高大鼠肉芽组织中VEGF、bFGF、EGFmRNA的表达水平,推测MEBO可能通过对VEGF、bFGF、EGF的调控,促进创面成纤维细胞的分裂增殖及新生毛细血管的增殖,从而促进肉芽组织形成,加速创面愈合。②MEBT/MEBO能明显缩短实验性SD雄性大鼠体表创伤创面修复愈合时间,具有促进大鼠体表创伤创面愈合的作用。唐乾利 韩珊珊 付军 代波 冯婧 黄欣 李杰辉 狄钾骐 2012右江民族医学院学报2012,34,5:63
5柴胡皂甙d上调人急性早幼粒白血病细胞糖皮质激素受体mRNA对细胞生长的影响显示文摘目的:观察柴胡皂甙d(SSd)对人急性早幼粒白血症细胞(HL60)糖皮质激素受体(GR)mRNA表达的调节作用及对细胞生长的影响。方法:用从柴胡中提取的单体成分SSd,以3H-胸腺嘧啶(3H-TdR)掺入法和流式细胞仪观察细胞生长,用Northernblot分析SSd对GRmRNA的改变。结果:经SSd作用后,HL60细胞2H-TdR掺入率明显降低,呈时间和剂量依赖关系,SSd10μg/ml处理48h作用最明显;流式细胞仅分析细胞呈现G0/G1期阻滞现象,GRmRNA表达增加。结论:SSd可上调HL60细胞GRmRNA表达并抑制细胞生长。步世忠 许金廉 孙继虎 陈宜张 商权 2000中国中西医结合杂志2000,20,5:64
6Mettl3-/Mettl14-mediated mRNA N6-methyladenosine modulates murine spermatogenesis显示文摘精子发生在双 spermatogonial 干细胞(SSC ) 哪个生产 haploid 精子期间是一个区别过程。这个高度专业化的过程精确在 transcriptional, posttranscriptional,和翻译层次被控制。这里,我们报导那 N 6-methyladenosine (m 6 一) ,调整基因表示的一个 epitranscriptomic 标记,在精子发生期间起必要作用。我们现在的全面 m 6 从五个发展阶段的老鼠 spermatogenic 房间的 mRNA methylomes:无差别的 spermatogonia,类型 A 1 spermatogonia, preleptotene spermatocytes, pachytene/diplotene spermatocytes,和圆 spermatids。m 6 有 Vasa-Cre 的 RNA methyltransferase Mettl3 或 Mettl14 引起 m 6 SSC 的 A 和弄空。m 6 为 SSC 增长 / 区别被要求的抄本的一个弄空 dysregulates 翻译。在有 Stra8-GFPCre 的先进细菌房间的 Mettl3 和 Mettl14 的联合删除破坏精子形式,而有在先进细菌房间的 Mettl3 或 Mettl14 的单个删除的老鼠显示出正常精子发生。从双异种老鼠展览的 spermatids 损害了为精子形式是必要的 haploid 特定的基因的翻译。这研究加亮 mRNA m 6 在 germline 开发的修正,潜在地保证在精子发生的不同阶段协调了翻译。Zhen Lin Phillip J Hsu Xudong Xing Jianhuo Fang Zhike Lu Qin Zou Ke-Jia Zhang Xiao Zhang Yuchuan Zhou Teng Zhang Youcheng Zhang Wanlu Song Guifang Jia Xuerui Yang Chuan He Ming-Han Tong 2017Cell Research2017,27,10:61
7艾灸对应激性胃溃疡大鼠胃粘膜细胞增殖和凋亡的影响及其与热休克蛋白表达关系的研究显示文摘目的:观察艾灸“足三里”等穴对应激性胃溃疡大鼠胃粘膜细胞增殖及凋亡的影响,分析热休克蛋白70基因表达(HSP70 mRNA)与上述效应的关系,探讨艾灸促进胃粘膜损伤修复的细胞分子生物学机制。方法:60只健康SD大鼠随机分为4组,即束缚对照组、模型组、艾灸“足三里”-“梁门”穴组和艾灸非穴对照点组。束缚水浸应激法制备胃溃疡模型,采用放射免疫方法测定胃粘膜转化生长因子(TGFα-)的含量,RT-PCR法测定HSP70 mRNA,免疫组织化学方法检测胃粘膜增殖细胞核抗原(PCNA)及细胞凋亡指数。结果:束缚水浸应激法造模后可致胃粘膜损伤指数升高,胃粘膜TGFα-含量下降,PCNA下降,细胞凋亡指数、HSP70 mRNA增加(P<0.05或P<0.01)。艾灸“足三里”“梁门”可降低胃粘膜损伤指数,增加胃粘膜TGFα-含量,促进HSP70 mRNA和PCNA的表达,降低胃粘膜细胞凋亡指数,与模型组和对照组比较有显著性差异(P<0.05或P<0.01)。结论:艾灸“足三里”“梁门”对应激性胃溃疡的胃粘膜具有保护作用,其机制可能是促进了TGFα-合成,刺激胃粘膜细胞增殖,抑制细胞凋亡,而这一过程可能与艾灸诱导HSP70表达有关。易受乡 彭艳 常小荣 彭娜 严洁 林亚平 2006针刺研究2006,31,5:59
8A Brief Review on the Mechanisms of miRNA Regulation显示文摘MicroRNAs (miRNAs) are a class of short,endogenously-initiated non-coding RNAs that post-transcriptionally control gene expression via either translational repression or mRNA degradation.It is becoming evident that miRNAs are playing significant roles in regulatory mechanisms operating in various organisms,including developmental timing and host-pathogen interactions as well as cell differentiation,proliferation,apoptosis and tumorigenesis.Likewise,as a regulatory element,miRNA itself is coordinatively modulated by multifarious effectors when carrying out basic functions,such as SNP,miRNA editing,methylation and circadian clock.This mini-review summarized the current understanding of interactions between miRNAs and their targets,including recent advancements in deciphering the regulatory mechanisms that control the biogenesis and functionality of miRNAs in various cellular processes.Yimei Cai Xiaomin Yu Songnian Hu Jun Yu 2009Genomics, Proteomics & Bioinformatics2009,7,4:55
9人参总皂甙对造血生长因子活性及其mRNA表达的影响显示文摘目的 探讨人参“补气生血”的现代生物学机理。 方法 采用核酸分子原位杂交和造血生长因子生物活性检测等技术,研究人参总皂甙(TSPG)对造血生长因子活性及其m RNA表达的影响。 结果 TSPG能显著促进小鼠骨髓基质细胞(BMSC)、腹腔巨噬细胞(PM)和脾细胞(SPC)的粒-巨噬细胞集落刺激因子(GM-CSF)及白细胞介素-6(IL-6)m RNA的表达,经TSPG诱导制备的BMSC、PM和SPC条件培养上清液含有较高的爆式红系集落刺激活性(BPA)、粒-巨噬细胞集落刺激活性(GM-CSA)和巨核细胞集落刺激活性(MK-CSA)。 结论 TSPG促进血细胞生成的机理与其诱导造血生长因子的基因表达有密切关系。王勇 王莎莉 王亚平 姜蓉 张淑慎 1999解剖学报1999,30,4:53
10电针对大鼠脑局部缺血再灌流后c-fos、mRNA表达的影响显示文摘采用Wistar大鼠 ,线栓法制作脑局部缺血再灌流动物模型 ,以原位杂交技术及苏木素 -伊红 (HE)染色方法 ,观察电针对缺血侧额叶、顶叶及海马各区内c fos、mRNA表达并神经元组织形态学改变的影响。结果表明 ,电针能显著增强脑局部缺血再灌流后病灶侧额、顶叶皮层及海马各区c fos、mRNA表达 ,并能减少缺血再灌流损伤后上述各脑区神经元的变性坏死。结果提示电针对脑局部缺血后受损神经元的保护作用可能与增强了c fos。王利 张学勤 张勇 卢志达 2000中国针灸2000,20,4:54
11兔前交叉韧带切断骨关节炎模型中MMP-1 MMP-13及TIMP-1的mRNA表达研究显示文摘目的 研究兔膝关节前交叉韧带切断 (ACLT)骨关节炎模型关节软骨及滑膜中基质金属蛋白酶 (MMP) 1,MMP 13及组织源性基质金属蛋白酶抑制剂 (TIMP) 1在不同造模时期的表达情况 ,探讨上述因子在骨关节炎 (OA)发病过程中的作用。为该模型作OA防治研究提供理论依据。方法 实验组ACLT模型兔 2 0只 ,分别于造模 4周及 8周时各处死 10只 ,假手术对照组大白兔10只于术后 8周处死。解剖显微镜下行股骨髁关节软骨退变的大体评分 ,取股骨内髁内侧退变软骨及邻近滑膜 ,用反转录 多聚酶链反应 (RT PCR)的方法检测MMP 1,MMP 13及TIMP 1的mRNA表达。结果 ACLT术后 4周即可见软骨退变 ,8周时退变进一步加重 (P <0 0 2 ) ,对照组无明显软骨退变。对照组软骨及滑膜中MMP 1及TIMP 1的检出率较低 ,造模 4周时检出率明显增高 (P <0 0 5 ) ,部分阳性标本表达量有一定增高 ,造模 8周时MMP 1仍有很高的检出率 ,表达量持续增高 ,而TIMP 1检出率较 4周时下降 ;MMP 13在对照组滑膜中没有检测出 ,造模 4周时有一定的检出率 ,8周时检出率明显增加 (P <0 0 0 2 ) ,软骨中对照组MMP 13的表达率及表达量都很低 ,造模 4周时表达率明显增高 (P <0 0 5 ) ,8周时表达率却明显下降。结论 MMP 1,MMP 13及TIMP吴宏斌 杜靖远 胡勇 刘维钢 傅刚 张景辉 2002中华风湿病学杂志2002,6,3:58
12基质金属蛋白酶-9及其mRNA在胃癌中的表达与血管新生的关系显示文摘目的 观察基质金属蛋白酶 9(MMP 9)与MMP 9mRNA在胃癌组织及细胞中的表达与作用特点 ,及其与肿瘤浸润、转移及血管新生之间的关系。方法 利用 74例胃癌标本及体外培养人胃低分化腺癌细胞BGC82 3,经连续切片免疫组织化学染色、原位杂交、侵袭实验、酶谱分析及形态定量分析方法 ,进行金属蛋白酶 (MMP) 9、MMP 9mRNA、CD34、α SMA、VEGFR 1、VEGFR 2的检测 ,并结合临床病理参数进行综合分析。结果 MMP 9及其mRNA的表达均与癌组织的浸润深度、分化程度、淋巴结转移密切相关 ;MVD与癌组织的浸润深度、淋巴结转移关系密切 ;BGC82 3细胞MMP 9,MMP 9mRNA ,VEGFR 2染色均为阳性 ,VEGFR 1染色阴性 ;MMP 9抗体可使BGC82 3细胞侵袭细胞数由 6 9± 5个 /40 0倍下降为 (18± 4 )个 /40 0倍 ;直接培养于培养皿表面的BGC82 3细胞有稳定的MMP 9,MMP 2酶原表达 ,但培养于I型胶原包被培养皿表面的BGC82 3细胞MMP 2表达明显增强并出现活化形式 ;BGC82 3细胞与VEGF共孵育 ,条件培养基中MMP 9酶原含量以VEGF剂量依赖的方式增加。结论 胃癌细胞自身具有产生与分泌MMP 9的能力 ,MMP 9对肿瘤的浸润、转移及间质血管新生具有促进作用。王璐 张丽红 李玉林 李一雷 刘湛 2003中华医学杂志2003,83,9:57
13Dynamic changes of typeⅠ,Ⅲand N collagen synthesis and distribution of collagen-producing cells in carbon tetrachloride-induced rat liver fibrosis显示文摘AIM To find out the relationship between the gene transcription of different types ofprocollagen and the deposition of the relevant collagens in the liver tissue and to confirm the types of collagen producing cells in liverfibrogenesis.METHODS Dynamic changes of the expression of α1(Ⅰ ), α1 (Ⅲ ) and α1 (Ⅳ) procollagen mRNAand relevant collagens and the distribution ofcollagen producing cells during liver fibrogenesis of rat induced by CCl4 (20 weeks)were investigated with Northern blot analysis,in situ hybridization and immunohistochemicaltechniques.RESULTS The increased expression of α1 (Ⅲ)procollagen mRNA by Northern blot analysis was the most predominant one among the threemRNAs during fibrogenesis. However, theenhanced expression of al (Ⅳ) procollagenmRNA occurred very early while the expressionof α1 (Ⅰ) mRNA was not enhanced much until themiddle stage of the exPeriment. D6smin (Dm)positive hepatic stellate cells (HSCs) and fewmyofibroblasts (MFs) in and around the necrotic areas expressed α1 (Ⅰ), α1 (Ⅲ) and α1 (Ⅳ)procollagen mRNA signals detected by in situhybridization at the early stage of theexperiment. All the three procollagen mRNAsignals thereafter mainly localized in fibroblasts (Fbs) and MFs in fibrotic septa during the middle and late stages of fibrosis, which distributedparallel to the corresponding collagens detected by immunohistochemical study. ln addition, the endothelial cells of sinusoids and the small blood vessels within the septa also showed α1(Ⅳ) procollagen mRNA and type Ⅳ collagen expressionCONCLUSION It is considered that 'HSC-MF-Fb' effect cell system is the major cellularsource of collagen production in liver fibrosis, in which HSCs are collagen producing precursor cells in the early liver fibrogenesis, thereafter the synthesis of type Ⅰ, Ⅲ and Ⅳ collagens (Col Ⅰ, Col Ⅲ and Col Ⅳ) mainly derives fromMFs and Fbs, which play a very important role in the progress of liver fibrosis. The endothelialcells along sinusoids, as another source of Col Ⅳ production, might participate in the capillization of liver sinusoids.DU Wei-Dong ZHANG Yue-E ZHAl Wei-Rong and ZHOU Xiao-Mei(Department of Pathology, Shanghai Medical University, Shanghai200032, China)(National Laboratory for Oncogenes and Related Genes, ShanghaiCencer Institute)See invited commentary on page 388 1999World Journal of Gastroenterology1999,5,5:47
14Clinical significance of the expression of isoform 165 vascular endothelial growth factor mRNA in noncancerous liver remnants of patients with hepatocellular carcinoma显示文摘AIM: To investigate the prognostic role of isoform 165 vascular endothelial growth factor messenger RNA (VEGF165 mRNA)in noncancerous liver tissues from patients with primary hepatocellular carcinoma (HCC).METHODS: Using a reverse-transcription polymerase chain reaction (RT-PCR)-based assay, VEGF mRNA was determined prospectively in noncancerous liver tissues from 60 consecutive patients with HCC undergoing curative resection. We categorized the patients with VEGF165 mRNA over 0.500 in noncancerous liver tissues as group A, and those below 0.500 as group B.RESULTS: Among the isoforms of VEGF mRNA by multivariate analysis, a higher level of VEGF165 mRNA in noncancerous liver tissue correlated significantly with a higher risk of HCC recurrence (P = 0.039) and recurrence-related mortality (P= 0.048), but VEGF121 did not. The other significant predictors of recurrence consisted of vascular permeation (P = 0.022),daughter nodules (P = 0.033), cellular dedifferentiation (P = 0.033), an absent or incomplete capsule (P = 0.037).A significant variable of recurrence-related mortality was Vascular permeation (P= 0.012). As to the clinical manifestations of 16 patients who developed recurrence,the recurrent tumor number over 2, recurrent extent over two-liver segments, and the median survival after recurrence,all significantly correlated with group A patients (P = 0.043,0.043, and 0.048, respectively). However, the presence of extrahepatic metastasis was not (P>0.05). The difference in recurrence after treatment between the two groups had no statistical significance (P>0.05).CONCLUSION: The higher expression of isoform VEGF165mRNA in noncancerous liver remnant of patients with HCC may be a significant biological indicator of the invasiveness of postoperative recurrence.I-ShyanSheen Kuo-ShyangJeng Shou-ChuanShih Chih-RoaKao Wen-HsingChang Horng-YuanWang Po-ChuanWang Tsang-EnWang Li-RungShyung Chih-ZenChen 2005World Journal of Gastroenterology2005,11,2:41
15当归调控放射性肺损伤TGF-β_1表达水平的研究显示文摘目的阐明当归对放射性肺损伤过程中TGF-β_1水平的影响,寻求预防或治疗放射性肺损伤的有效途径。方法成年雌性C57BL6小鼠72只,随机分作4组(1)空白对照组9只,腹腔注射生理盐水20ml(kg·d);(2)单纯当归组9只,腹腔注射25%当归注射液20ml(kg·d);(3)单纯照射组27只,全肺单次照射12Gy+腹腔注射生理盐水20ml(kg·d);(4)照射+当归组27只,全肺单次照射12Gy+腹腔注射25%当归注射液20ml(kg·d)。生理盐水和25%当归注射液于照射前1周开始注射,直至照射后2周结束。于照射后1、24和72h、1(潜伏期)、2、4、8、16(肺炎期)和24周(纤维化期)取实验组及相同鼠龄对照组小鼠肺组织,空白对照组与单纯当归组各1只,单纯照射组与照射+当归组各3只。左肺留作组织学与免疫组化分析。右肺作总RNA提取及实时定量RTPCR分析。结果空白对照组和单纯当归组动物,其免疫组化阳性细胞数相对较低,仅波动在9~31个之间。单纯照射组的阳性细胞数较上述两组明显增高(P<001),尤以1周后为甚。照射+当归组的阳性细胞数则介于两者之间,也显著低于单纯照射组(P<001)。实时定量PCR结果显示,单纯照射组的TGFβ1mRNA相对含量较单纯当归组和空白对照组均有统计学意义(P<001)。照射+当归组的TGFβ1mRNA相对含量较单纯照射组明显下调。谢丛华 周云峰 彭纲 周福祥 张弓 梁辰 刘晖 陈纪 夏明童 2005中华放射医学与防护杂志2005,25,2:47
16针刺对雌性大鼠垂体雌激素受体mRNA表达和血雌二醇水平影响的研究显示文摘本文采用RNA点杂交、放射免疫测定(RIA)和计算机图像处理技术研究电针(EA)对雌性大鼠垂体组织雌激素受体mRNA(ERmRNA)及血中雌二醇(E2)水平的影响。实验动物随机分成四组:正常组(INT)正常电针组(NT+EA)去卵巢组(OVX)和去卵巢电针组(OVX+EA)。结果表明,OVX血雌二醇(E2)水平明显低于INT(P<0.01)。OVX杂交斑点灰度低于INT(P<0.01);OVX+EA血E2含量明显高于OVX(P<0.01)。OVX+EA杂交斑点灰度高于OVX(P<0.01);INT+EA血E2水平及杂交斑点的灰度与INT比较无显著差异。结果提示,电针可能通过提高去卵巢大鼠体内E2水平,影响垂体雌激素ER的基因表达,这可能是电针调整下丘脑-垂体-卵巢轴异常功能的机制之一。李耀功 杨茹 高慧 季士珠 陈伯英 1998针刺研究1998,23,1:43
17主要人热休克蛋白在癌组织及癌旁正常组织中表达水平的比较研究显示文摘目的对25例喉癌及癌旁正常喉组织中几种主要人热休克蛋白的mRNA表达水平进行检测和比较。方法采用mRNA狭缝杂交的方法。HSP27、HSC70和HSP90β探针用PCR方法进行制备。结果HSP90α和HSP70在喉癌组织中的表达量显著高于正常喉粘膜,平均表达量均为正常喉粘膜表达量的5倍。而HSP27、HSC70和HSP90β的表达量,在两种组织中变化不大。结论与其他热休克蛋白相比,HSP70和HSP90α可能在喉癌的发生过程中有更为重要的作用。进一步深入研究它们在肿瘤和正常组织中不同表达的机理,将为热休克蛋白用于喉癌的生物治疗提供理论依据。施一江 赵玫 徐先发 乔绘红 黄常志 1998中华肿瘤杂志1998,20,4:47
18急性温度应激对吉富品系尼罗罗非鱼(Oreochromis niloticus)幼鱼生化指标和肝脏HSP70mRNA表达的影响显示文摘采用温度应激的方法,将尼罗罗非鱼在26℃下驯养3周后,直接放入16℃、21℃、26℃(对照)、31℃和35℃水环境中,在不同温度应激后(0—24h)对鱼体血液和肝脏生化指标及其肝脏HSP70mRNA表达量变化进行了研究。结果表明,各实验组(除对照组外)血清皮质醇水平显著上升(P<0.05)。16℃组血清葡萄糖水平在24h时显著高于其它各组(P<0.05)。血清总蛋白水平与谷丙转氨酶、谷草转氨酶、溶菌酶、碱性磷酸酶活力和肝脏HSP70mRNA表达量在0—24h内基本呈先上升后下降的变化。24h后,16℃组血清甘油三酯含量显著上升,而胆固醇含量显著下降(P<0.05)。16℃和35℃组肝脏丙二醛含量随着应激时间的延长而上升,超氧化物歧化酶和过氧化氢酶活力均呈先上升后下降的变化。温度应激可显著改变罗非鱼的非特异性免疫力、抗氧化能力以及肝脏HSP70mRNA的表达水平。在实际养殖生产中,应密切关注温度的变化,降低温度胁迫对鱼体免疫机能的影响。强俊 杨弘 王辉 徐跑 何杰 2012海洋与湖沼2012,43,5:50
19CD15mRNA、CD44v6mRNA及nm23H1mRNA在乳腺癌组织中的表达及其临床意义显示文摘目的 探讨CD15mRNA及其蛋白、CD44v6mRNA和nm2 3H1mRNA在乳腺癌组织中的表达及与乳腺癌患者预后的关系。方法 应用催化信号放大 (CSA)原位杂交和免疫组织化学方法 ,对94例乳腺癌患者的癌组织进行了CD15mRNA及其蛋白、CD44v6mRNA和nm2 3H1mRNA表达的检测。结果 CD15mRNA及其蛋白、CD44v6mRNA高表达及nm2 3H1mRNA低表达均与乳腺癌患者的组织学分级、临床分期、淋巴结转移、复发和预后密切相关。CD15mRNA和CD44v6mRNA高表达及nm2 3H1mRNA低表达患者淋巴结转移率高、生存率低。结论 CD15mRNA表达与CD44v6mRNA和nm2 3H1mRNA表达具有正、负调节的协同作用。联合检测 3个基因 ,能更准确地判断乳腺癌的转移和预后状态。谷化平 倪灿荣 詹熔洲 尚培中 2000中华医学杂志2000,80,11:48
20Effects of platelet-derived growth factor and interleukin-10 on Fas/Fas-ligand and Bcl-2/Bax mRNA expression in rat hepatic stellate cells in vitro显示文摘AIM: To investigate the effects of platelet-derived growth factor(PDGF) and interleukin-10 (IL-10) on Fas/Fas-ligand and Bcl-2/Bax mRNA expressions in rat hepatic stellate cells.METHODS: Rat hepatic stellate cells (HSCs) were isolated and purified from rat liver by in situ digestion of collagenase and pronase and single-step density Nycodenz gradient.After activated by culture in vitro, HSCs were divided into 4 groups and treated with nothing (group N), PDGF (group P),IL-10 (group I) and PDGF in combinalJon with IL-10 (group C),respectively. Semi-quantitative reverse-transcriptase polymerase chain reaction (RT-PCR) analysis was employed to compare the mRNA expression levels of Fas/FasL and Bcl-2/Bax in HSCs of each group.RESULTS: The expression levels of Fas between the 4 groups had no significant differences (P>0.05). FasL mRNA level in normal culture-activated HSCs (group N) was very low.It increased obviously after HSCs were treated with IL-10(group I) (0.091±0.007 vs 0.385±0.051, P<0.01), but remained the low level after treated with PDGF alone (group P)or PDGF in combination with IL-10 (group C). Contrast to the control group, after treated with PDGF and IL-10, either alone or in combination, Bcl-2 mRNA expression was downregulated and Bax mRNA expression was up-regulated, both following the turn from group P, group I to group C.Expression of Bcl-2 mRNA in group C was significantly lower than that in group P (0.126±0.008 vs0.210±0.024, P<0.01).But no significant difference was found between group C and group I, as well as between group I and group P (P>0.05).Similarly, the expression of Bax in group C was higher than that in group P (0.513±0.016 vs0.400±0.022, P<0.01).No significant difference was found between group I and group P (P>0.05). But compared with group C, Bax expressions in group I tended to decrease (0.449±0.028 vs 0.513±0.016,P<0.05).CONCLUSION: PDGF may promote proliferation of HSCs but is neutral with respect to HSC apoptosis. IL-10 may promote the apoptosis of HSCs by up-regulating the expressions of FasL and Bax and down-regulating the expression of Bcl-2, which may be involved in its antifibrosis mechanism.Xiao-ZhongWang Sheng-JunZhang Yun-XinChen Zhi-XinChen Yue-HongHuang Li-JuanZhang 2004World Journal of Gastroenterology2004,10,18:35
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