Results 31 to 40 of about 25,505 (191)

Improving the inhibitors targeting enterovirus 71 3C proteinase [PDF]

open access: yes, 2015
手足口病(HFMD)的频繁爆发,给许多婴幼儿带来痛苦甚至导致死亡。目前,没有任何疫苗和抗病毒治疗可用于预防和治疗手足口病。肠道病毒71型(EV71)是引起手足口病的主要病原体,它能够侵入中枢神经系统引起严重的后遗症。3C蛋白酶是EV71病毒复制过程中的一个重要蛋白酶,在EV71的成熟过程和拮抗宿主细胞的先天性免疫反应中有着重要作用。因此,EV713C蛋白酶是一个很好的抗EV71药物靶点。 AG7088最先是针对人病毒3C蛋白酶进行设计的,已被证实可有效抑制EV71病毒活性 ...
吴彩明
core  

Diversity of culturable endophytic fungi of common reed ( Phragmites australis) in coastal wetland [PDF]

open access: yes, 2016
内生真菌在植物生长以及抵御环境胁迫过程中起着非常重要的生态作用.本研究从黄河三角洲滨海湿地1350个芦苇组织切片中分离得到318株内生真菌,通过对rDNA ITS的分型、测序及系统进化分析,研究了该地区芦苇植株根、茎、叶中可培养内生真菌的种类组成及在不同盐度、不同组织中的分布情况.根据序列相似性(以98%为阈值),共获得12个真菌分类操作单元(OTUs).在门级分类水平上,子囊菌门为绝对优势菌群,在各组织和站位中均有分布.芦苇根组织中分离得到的内生真菌OTU数相对较多 ...
张倩倩   +6 more
core   +1 more source

Endometrial assessment in abnormal uterine bleeding: transvaginal ultrasound alone may not be good enough

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 79-88, January 2026.
ABSTRACT Objective To evaluate the proportion of optimal assessments of endometrial thickness (ET) achieved by transvaginal ultrasound (TVS) compared with a multimodal (MM) sonographic approach in women with abnormal uterine bleeding (AUB). Methods This prospective observational study was a subset of the EPI‐SURE study conducted between June and ...
S. Nijjar   +5 more
wiley   +1 more source

美洲红鹮源嗜水气单胞菌的分离与鉴定

open access: yes野生动物学报, 2018
为了确定导致美洲红鹮(Eudocimus ruber)肝脏血肿、出血性肠炎的病原,从美洲红鹮的肝脏、肠道和饲喂美洲红鹮的小黄鱼肠道内容物分离得到3株革兰氏阴性杆菌,并对其进行生化鉴定、药敏试验、小鼠致病性试验,同时观察死亡红鹮的组织病理学变化。结果表明,分离到的3株细菌通过生化鉴定均为嗜水气单胞菌(Aeromonas hydrophila),具有α溶血,药敏试验显示不属于耐药菌株,对小白鼠具有致病性。病理学诊断中,肝脏以血栓为主、肠道黏膜层多处出现肉芽肿。美洲红鹮因致病性嗜水气单胞菌导致死亡。
陈 蓉 周 薇 陈 楠 章小小 邓长林
doaj  

全数字化乳腺摄影、数字乳腺断层摄影与DCE-MRI对乳腺肿物诊断效能的比较

open access: yesZhongshan Daxue xuebao. Yixue kexue ban, 2020
目的本文旨在对比全数字化乳腺摄影(FFDM),数字乳腺断层摄影(DBT)及动态增强磁共振成像(DCE-MRI)对不同腺体中乳腺肿物的诊断效能。方法回顾性分析49例同时行FFDM、DBT及MRI检查的乳腺病变患者的56个病灶,依据FFDM将乳腺分为非致密型与致密型,分别依据FFDM、DBT及MRI对乳腺病变进行BI-RADS分级,4a级及以下定义为良性,4b级及以上定义为恶性。所有病人均行手术或活检获取病理诊断作为金标准。采用kappa一致性检验与受试者工作特征(ROC)曲线对比FFDM ...
王智慧   +5 more
doaj  

Screening and application of aptamers to Staphylococcus aureus Toxic Shock Syndrome Toxin-1 [PDF]

open access: yes, 2016
摘要 目的:金黄色葡萄球菌(Staphylococcusaureus)分泌的毒性休克综合征毒素-1(ToxicShockSyndromeToxin-1,TSST-1)引发中毒性休克综合征(ToxicShockSyndrome,TSS),通过激活T淋巴细胞使其活化、增殖,引起强烈的免疫应答。目前针对TSST-1本身的治疗手段不多,合成寡核苷酸文库和亲和力筛选作为获得高亲和力、高特异性适配体(Aptamer)的一种方便、快捷、有效的方法。本研究利用指数富集的配体系统进化技术 ...
陈弘炜
core  

Undetected cases after implementation of first‐trimester anomaly scan in low‐risk population: insights from the IMITAS study

open access: yesUltrasound in Obstetrics &Gynecology, Volume 67, Issue 1, Page 27-33, January 2026.
ABSTRACT Objective To assess the effectiveness of the first‐trimester anomaly scan (FTAS) performed as part of a centrally steered national screening program in The Netherlands by investigating false‐negative cases with a fetal structural anomaly that was not detected at the FTAS.
K. Bronsgeest   +18 more
wiley   +1 more source

老年类风湿关节炎合并骨质疏松症的临床分析

open access: yesZhongguo shiyan zhenduanxue, 2020
类风湿关节炎(RA)[1]是一种病因未明的以慢性、炎性滑膜炎为主,最终导致关节和骨破坏的自身免疫性疾病。RA以中老年女性发病为主,发病早期即有骨质疏松(OP)的改变[2],而且随着RA患者病程迁延,年龄不断增长、女性绝经期的到来,骨量不断流失,骨质疏松发生率逐渐上升[3],严重时类风湿关节炎可致患者关节畸形甚至功能丧失[4-6]。合并了OP,更容易出现骨折,诱发或加重心、脑血管疾病,导致坠积性肺炎和压疮发生,严重危害老年人的健康,明显增加老年人的致残率和病死率[7 ...
黄丹, 南鹤
doaj  

@@ [PDF]

open access: yes, 2017
抗中性粒细胞胞质抗体(antineutrophil cytoplasmic autoantibody,ANCA)相关性小血管炎(ANCA associated small vessel vasculiltis,AASV)是以中性粒细胞、单核细胞胞质成分为靶抗原的一组自身免疫性系统性疾病,主要包括肉芽肿性多血管炎、显微镜下多血管炎和嗜酸性肉芽肿性多血管炎。福建省自然科学基金(No ...
彭卫华, 陈凌舟
core   +1 more source

The Rhetoric of Disenchantment: Ghost Belief and Secular Critique in Early Twentieth‐Century China

open access: yesCognitive Science, Volume 50, Issue 1, January 2026.
Abstract This study presents the first large‐scale empirical analysis of how ghosts and spirits were debated during China's early twentieth‐century secular transformation. Using a novel dataset of over 2000 digitized texts—including newspapers, periodicals, and essays from 1890 to 1949—we combine close reading, AI‐assisted annotation, and statistical ...
Ze Hong, Yuqi Chen
wiley   +1 more source

Home - About - Disclaimer - Privacy