Results 41 to 50 of about 23,846 (167)

嘌呤核苷酸补偿对海洛因依赖大鼠脑组织中TPH和GTPCH基因表达的影响

open access: yesZhongguo shiyan zhenduanxue, 2010
目的研究嘌呤核苷酸补偿对海洛因依赖大鼠脑组织中色氨酸羟化酶(tryptophan hydroxylase,TPH)、GTP环水化酶1(GTP cyclohydrolase1,GTPCH)基因表达的影响。方法剂量递增腹腔注射海洛因,建立海洛因依赖大鼠模型,50只正常雄性Wistar大鼠随机分为对照组(C)、海洛因组(H)、海洛因补偿AMP+GMP组(HAG)、海洛因补偿AMP组(HA)、海洛因补偿GMP组(HG),每组10只。Real-timePCR法测定各组大鼠脑组织中TPH和GTPCH1基因的表达 ...
李鸿梅   +4 more
doaj  

Functional analysis of Gsc gene in amphioxus during early embryonic development [PDF]

open access: yes, 2015
文昌鱼是最接近脊椎动物直接祖先的现生动物,是研究脊椎动物发育相关基因功能演化的理想模型。转录因子Goosecoid(Gsc)为Homeobox基因家族重要成员,其mRNA特异表达在脊椎动物胚胎组织者(Organizer)、脊索前板(prechordalplate)等组织区域。在爪蟾中异位表达该基因可产生类似组织者的功能,诱导胚胎第二体轴的形成,该基因还可通过抑制Wnt、BMP等信号活性,参与脊椎动物背腹轴的形成和脑的发育 ...
商留珂
core  

Metadiscourse and Teacher Moves for Supporting Student Reasoning in Linguistics Classroom Interactions

open access: yesInternational Journal of Applied Linguistics, Volume 36, Issue 1, Page 522-539, February 2026.
ABSTRACT This paper examines the features of metadiscourse across different teacher moves in university linguistics classroom discourse and the teaching strategies reflected in its use. The results reveal that teachers employ diverse metadiscourse during classroom interactions to support student reasoning.
Jingjie Li, Wenjie Hu
wiley   +1 more source

非小细胞肺癌的EGFR表达与EGFR基因突变的比较

open access: yesZhongguo shiyan zhenduanxue, 2009
目的探讨非小细胞肺癌(NSCLC)表皮生长因子受体(EGFR)免疫组化表达与EGFR基因突变的关系及其临床意义。方法对130例手术切除的非小细胞肺癌组织应用免疫组化方法检测EGFR表达,同时应用基因测序方法检测EGFR基因突变,研究EGFR表达与EGFR基因突变的关系。结果130例NSCLC中有38例EGFR基因突变,突变率为29.2%。EGFR阳性率为67.7%。EGFR表达与基因突变无关(P>0.05),结论EGFR免疫组化表达与EGFR基因突变无关,不能作为筛选EGFR酪氨酸激酶抑制剂(TKI ...
尹光浩   +4 more
doaj  

喉鳞状细胞癌中PI3K抑制剂对HMGA1基因表达的影响

open access: yesZhongguo shiyan zhenduanxue, 2020
目的检测磷脂酰肌醇3激酶(PI3K)、高迁移率族蛋白A1(HMGA1)基因在喉鳞状细胞癌(LSCC)中表达情况,观察喉癌Hep2细胞中应用PI3K抑制后HMGA1表达变化,分析LSCC中HMGA1表达在多个临床病理参数组别中的影响。方法采用免疫组化SP法检测47例LSCC组织和21例癌旁正常组织中PI3K和HMGA1基因蛋白水平表达情况,逆转录-多聚酶链反应(RT-PCR)检测PI3K抑制剂(wortmannin)预处理与未处理组的人喉癌Hep2细胞中HMGA1基因mRNA水平表达量 ...
张云龙   +5 more
doaj  

Analysis of Dvl function and expression patterns of Wnt/β-catenin signaling genes in amphioxus [PDF]

open access: yes, 2015
Wnt/β-catenin信号通路是后生动物中一条相对保守的信号通路,广泛参与早期胚胎体轴的建立以及多种器官的形态建成与分化。该信号通路在很多物种中都已有研究,但是在脊索动物文昌鱼中该信号通路的研究才刚刚开始,研究的内容仅包括Wnts、β-catenin、Tcf、Axin、Dkks和sFRPs基因的表达谱分析以及化学试剂处理对胚胎发育的影响,在文昌鱼中关于该信号通路中很多重要基因的功能研究尚未开始。 本文鉴定和克隆了文昌鱼Wnt/β-catenin信号通路中的Dvl(Dishevelled)基因 ...
王净
core  

Self‐Consumption Translation: Exploring Interlingual Translation Within Multilingual (mainland) China

open access: yesInternational Journal of Applied Linguistics, Volume 36, Issue 1, Page 714-724, February 2026.
ABSTRACT Interlingual translation, as defined by Roman Jakobson, refers to the transfer of meaning between languages. However, this concept has often been conflated with linguistic shifts between distinct cultures and nation‐states. To challenge this misconception, I propose the concept of self‐consumption translation (SCT), a subfield of interlingual ...
Bilin (Belen) Liu
wiley   +1 more source

胰腺癌细胞中Runx3基因表达及甲基化的研究

open access: yesZhongguo shiyan zhenduanxue, 2012
目的观察胰腺癌细胞中Runx3基因表达的情况,探讨其出现表达异常的机制。方法 (1)RT-PCR检测胰腺癌Panc-1、BxPC-3、AsPC-1细胞及正常胰腺组织中Runx3mRNA表达情况(2)Western blotting检测胰腺癌Panc-1、BxPC-3、AsPC-1细胞中Runx3蛋白表达情况;(3)甲基化特异性PCR(MSP)检测胰腺癌Panc-1、BxPC-3、As-PC-1细胞及正常胰腺组织中Runx3基因启动子区CpG岛的甲基化水平。结果 (1)Panc-1、BxPC-3、AsPC-
邱志东   +3 more
doaj  

Identification of new genes associated with bio-silification in marine Diatom Thalassiosira pseudonana [PDF]

open access: yes, 2016
硅藻是一类广泛分布于水体中的光合自养真核单细胞藻类,在全球碳和硅循环中起重要作用,它们需要从环境中吸收硅酸盐来合成二氧化硅的细胞壁。硅藻独特的硅质化结构既具有重要生态学意义,又具有广泛实用价值。其硅质壁的形成过程及分子调控机理一直受到研究者们关注。最近,一些直接跟生物硅化相关的基因或蛋白正被科学家们发现和研究,但这些蛋白都是直接从硅藻细胞壁上提取下来,而精确的硅质壁合成过程不可能仅由细胞壁上这几个蛋白调控合成,所以为进一步了解硅质壁的合成和调控过程,必须更广泛深入研究与硅藻生物硅化相关的其他基因或蛋白 ...
王鹏
core  

Effect of a Spray Containing Occlusive Agents, Humectants and Physiological Lipids on Skin Hydration of Healthy Dogs When Applied After Bathing With a Chlorhexidine 2%/Miconazole 2% Shampoo

open access: yesVeterinary Dermatology, Volume 37, Issue 1, Page 140-147, February 2026.
Background: Normal hydration of the canine epidermis is imperative for cutaneous homeostasis. Xerosis may be encountered in canine atopic dermatitis and may be aggravated by topical antiseptics. Hypothesis and Objectives: To evaluate the hydrating properties and the safety of a spray (Sensiderm spray; MP Labo) when applied after shampooing healthy dogs
Adamantia Pseftogka   +3 more
wiley   +1 more source

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