Results 41 to 50 of about 24,885 (167)

Interaction of two-component systems in Thermus thermophilus [PDF]

open access: yes, 2015
目前,细菌产生了许多机制来对抗抗生素药物的使用,这给细菌性疾病的药物治疗带来了巨大的威胁。细菌感知外界环境压力的其中一个机制就是运用双组分信号转导系统(TCSs)来响应外界刺激。一个TCS一般包含两个组分:组氨酸激酶(HK)和调节应答蛋白(RR)。HK可以感知各种各样的信号,并通过改变它对应的RR的磷酸化水平来调控RR的活性,大部分磷酸化的RR接下来介导转录水平的调控。由于哺乳动物体内不含TCSs,所以TCSs是新的抗生素药物开发的重要靶点。 在一个TCS中 ...
胡晓婕
core  

Updated insights into the molecular pathogenesis of canine atopic dermatitis

open access: yesVeterinary Dermatology, Volume 36, Issue 4, Page 375-384, August 2025.
Abstract Atopic dermatitis (AD) is a common and chronic inflammatory skin disease with frequent relapses. The genomics revolution has greatly contributed and revolutionised our knowledge of human AD; understanding the molecular skin fingerprint of AD and associated pathogenic immune pathways has led to preclinical assessments of several novel ...
Frane Banovic
wiley   +1 more source

AP-MS-based quantitative proteomics of protein interaction dynamics of P-TEFb regulation in HIV-1 gene transcription elongation [PDF]

open access: yes, 2016
艾滋病是由人类免疫缺陷病毒(Humanimmunodeficiencyvirus,HIV)感染引起的获得性免疫缺陷综合症(Acquiredimmunodeficiencysyndrome,AIDS),是一种以全身免疫系统严重损害为特征的严重传染性疾病。2008年法国科学家FrançoiseBarré-Sinoussi和LucMontagnier因发现HIV病毒及其病理获得了诺贝尔生理与医学奖。艾滋病已经夺取了全球几千万人的生命,并且现在还有四千多万的携带者 ...
何耀辉
core  

Evaluation of filaggrin 2 expression in dogs with atopic dermatitis before and after oclacitinib maleate administration

open access: yesVeterinary Dermatology, Volume 36, Issue 4, Page 453-461, August 2025.
Background – Canine atopic dermatitis (cAD) is a chronic, inflammatory, multifactorial and pruritic disease. The presence of skin barrier impairment (e.g. filaggrin alterations), along with abnormal immune responses, can negatively impact cutaneous barrier function.
Wendie Roldan Villalobos   +5 more
wiley   +1 more source

卵巢浆液性囊腺癌及囊腺瘤的差异蛋白质组学分析

open access: yesZhongguo shiyan zhenduanxue, 2011
目的探讨卵巢浆液性囊腺癌与卵巢浆液性囊腺瘤的差异表达蛋白质谱,从而寻找特异性诊断标志物。方法采用二维液质联用分析技术。结果卵巢浆液性囊腺癌与卵巢浆液性囊腺瘤两组间差异蛋白数共计128个。其中116个蛋白在卵巢浆液性囊腺癌中表达上调,12个蛋白表达下调。结论纤维结合蛋白1,基膜聚糖,核心蛋白多糖,骨诱导因子,微管蛋白A、B,肌动蛋白,肌动蛋白素,角蛋白8,结蛋白,膜联蛋白A1、A2,YWHAZ,踝蛋白1,转酮醇酶1,组织蛋白酶D,X线交错互补修复基因6,谷胱甘肽转移酶,核仁蛋白,抑制素,抗原提呈蛋白1 ...
刘彦红   +4 more
doaj  

内分泌扰乱化学品对动物的影响和作用机制 [PDF]

open access: yes, 2000
介绍了内分泌扰乱化学品 (EDCs)的作用机制及其对野生动物影响的研究进展。内分泌化学品可能与性激素受体、甲状腺素受体和其他受体 (如芳烃受体 )结合 ,也可能通过影响动物体内激素的代谢而对动物的生长发育起调控作用。各实验室的重复实验不支持环境雌激素之间存在协同作用的结论。已报道过的人体和野生动物生殖缺陷中具有充分证据的暴露 -效应关系的实例为数不多。尽管野生鱼类变性是英国河流中的一个普遍现象 ,但进一步的实验证明污水处理场出水中的天然和合成雌激素足以引起鱼类的变性反应 ...
邱东茹,吴振斌,贺锋
core  

Simple sequence repeats and their expansions: role in plant development, environmental response and adaptation

open access: yesNew Phytologist, Volume 247, Issue 2, Page 504-517, July 2025.
Summary Repetitive DNA is a feature of all organisms, ranging from archaea and plants to humans. DNA repeats can be seen both in coding and in noncoding regions of the genome. Due to the recurring nature of the sequences, simple DNA repeats tend to be more prone to errors during replication and repair, resulting in variability in their unit length ...
Sridevi Sureshkumar   +3 more
wiley   +1 more source

尿微量蛋白检测项目的临床选择和评价

open access: yesZhongguo shiyan zhenduanxue, 2011
尿微量蛋白指用日常检验尿蛋白的方法不能发现而需用高度灵敏而特异的方法才能检出的尿中所含的少量蛋白。其种类很多,大多数属血浆的固有成分,如白蛋白、免疫球蛋白和微球蛋白等,也有肾小管产生的膜蛋白和某些疾病产生的蛋白等。各医院常根据需要,选定需检查的蛋白种类。有的只查白蛋白,以反映肾小球功能 ...
宋丁, 苏洁平, 李少鹏, 杨柳
doaj  

我国淡水鱼类柱形病病原菌柱状黄杆菌的遗传多样性 [PDF]

open access: yes, 2010
为认识我国淡水鱼类烂鳃病的病原以及柱形病在我国的发生情况,实验从发生烂鳃病的病鱼中分离细菌性病原,经过生理生化特性分析以及是否在含托普霉素的Shieh培养基中生长并形成黄色假根状菌落,是否产生降解明胶和硫酸软骨素的酶类等特性的鉴定,并结合16SrDNA序列分析,证实柱状黄杆菌(Flavobacterium columnare)是所分离的烂鳃病的病原。同时,研究也证实20世纪曾经命名为烂鳃(Gill-rot)病病原的鱼害黏球菌(Myxococcus piscicola Lu,Nie & Ko,1975 ...
姚卫建   +7 more
core  

Phylogenomic insights into the relationship and the evolutionary history of planthoppers (Insecta: Hemiptera: Fulgoromorpha) 基于基因组的系统发育分析为蜡蝉亚目(Fulgoromorpha)的系统发育关系及进化提供新见解

open access: yesSystematic Entomology, Volume 50, Issue 3, Page 495-518, July 2025.
Using genomic data from 285 species across 19 planthopper families, we conducted the first phylogenomic study targeting global planthoppers and inferred their phylogeny with the highest resolution so far. We proposed taxonomic changes including the establishment of a new family Borysthenidae stat. rev. and a new superfamily Meenoploidea superfam.
Junchen Deng   +9 more
wiley   +1 more source

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