Results 21 to 30 of about 16,409 (164)
Evaluation of Nonel N-(piperidin-4-yl)benzamide Derivatives as Potential Cell Cycle Inhibitors in HepG2 cells [PDF]
, 2015 肝癌是目前世界上引起致高死亡率的疾病之一。细胞周期紊乱是引起肿瘤细胞增殖失控的主要原因，越来越多的学者致力于研究细胞周期抑制剂。索拉非尼作为一个多靶点广谱抗肿瘤药，近几年来基于其结构改造的化合物层出不穷。因此，本文以索拉非尼为先导化合物，保留其二芳醚结构，将脲基改造成酰胺键，并插入一个亲水基团，设计合成了一系列的索拉非尼类似物——N-(4-哌啶基)-苯甲酰胺类化合物，共合成了45个终产物，合成方法简单易操作，产物易纯化，且收率高。通过初步生物学活性的筛选 ...
侯瑾
core
Ultrasound in Obstetrics &Gynecology, Volume 67, Issue 3, Page 376-384, March 2026.ABSTRACT Objective To investigate whether combining abnormal morphological features observed on ultrasound in live pregnancies that ended in a first‐trimester miscarriage can predict an abnormal karyotype. Methods This retrospective observational cohort study was conducted at the early‐pregnancy assessment unit at University College London Hospital ...
T. Setty +5 more
wiley +1 more source
Quantitative proteomic study of cell cycle of Prorocentrum donghaiense during the blooming period [PDF]
, 2016 东海原甲藻（Prorocentrumdonghaiense）是中国近海主要有害藻华种，几乎每年都会引发大规模的有害藻华，对海洋生态系统、海洋生物资源和水产养殖造成了严重威胁，并且影响公众健康。尽管目前对东海原甲藻藻华形成的海洋学和生态学机制开展了大量研究，但对现场藻华形成过程中东海原甲藻细胞生长调控的分子机制知之甚少。 本论文以现场东海原甲藻藻华为研究对象，运用基于质谱的定量蛋白质组学技术—iTRAQ（isobarictagsforrelativeandabsolutequantitation）技术 ...
刘九玲
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Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 6, Page 738-746, December 2025.ABSTRACT Objective To evaluate the performance of non‐invasive prenatal testing (NIPT) in vanishing‐twin and multiple pregnancies. Methods This study was conducted as part of the TRIDENT‐2 study, in which NIPT was offered as a first‐tier screening test to women with a multiple pregnancy or vanishing‐twin pregnancy between 1 June 2020 and 31 March 2023 ...
J. C. A. van Eekhout +86 more
wiley +1 more source
the mechanism investigation of neuronal specific protein CEND1on cell proliferation [PDF]
, 2015 阿尔茨海默病(Alzheimer’sdisease,AD)是一种神经退行性疾病，临床表现 为渐进性的记忆力丧失以及认知障碍。大量研究阐述了AD的病理特征和微观机 制，但目前为止尚未找到有效的治疗途径，因此继续深入研究AD致病过程，对 于疾病的预防和治疗具有重要意义。研究证实，区别于正常神经元终末分化和停 止分裂的生理状态，AD病人大脑中的神经元细胞周期会发生紊乱，部分神经元 能够重新进入细胞周期。这些神经元的细胞周期被重新激活后，进入细胞凋亡途 径CRND ...
牛雅琼
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Is parvovirus B19 infection upsurge in 2023–2024 associated with adverse pregnancy outcome?
Ultrasound in Obstetrics &Gynecology, Volume 66, Issue 3, Page 307-313, September 2025.ABSTRACT Objective A surge in parvovirus B19 infections has been reported in 2023–2024 across Europe and the USA, raising concerns about the associated perinatal risks. The aim of this study was to compare perinatal outcomes following maternal parvovirus B19 infection during the 2023–2024 period with those from a pre‐2023 cohort.
S. Prasad +22 more
wiley +1 more source
Zhejiang Daxue xuebao. Lixue ban, 2017 研究了穿心莲内酯诱导胃癌细胞SGC-7901生长抑制、周期阻滞与细胞凋亡的作用机制.用梯度浓度的穿心莲内酯作用于SGC-7901细胞，以MTT法检测药物对细胞的生长抑制情况；以流式细胞技术检测SGC-7901的周期分布状况、胞内的ROS水平以及线粒体膜电位的变化；以Annexin V-FITC/PI双染法检测细胞凋亡的水平；以Western blot检测不同加药浓度处理后的细胞内相关蛋白水平的变化.可知穿心莲内酯对SGC-7901细胞具有时间依赖和浓度依赖的抑制效果，48 h的IC50约为24 µg •
LIUQizhang(刘奇章) +1 more
doaj +1 more source
A preliminary study on Wee1 kinase protein stability in fission yeast [PDF]
, 2016 Wee1作为真核生物中调控细胞有丝分裂G2/M期过渡的重要激酶，它的功能可以被Cdc25磷酸酶所拮抗。如果细胞中的Wee1蛋白水平或者活性过高，细胞进入有丝分裂期延迟；而反之则G2期缩短，细胞提前进入有丝分裂期，因此在整个细胞周期中Wee1受到了非常精细地调控。高等生物中的研究表明，Wee1蛋白水平和稳定性受到了SCF的调控。为了研究裂殖酵母中参与调控Wee1激酶蛋白水平的细胞因子，本研究以裂殖酵母这一经典的单细胞真核生物为模式生物，开展了对有丝分裂G2/M过渡时期参与调控Wee1蛋白水平的因子的研究。
邱翠
core
Ultrasound in Obstetrics &Gynecology, Volume 65, Issue 6, Page 749-760, June 2025.ABSTRACT Objective Placental dysfunction can result in small‐for‐gestational age (SGA) or fetal growth restriction (FGR). The aim of this prospective cohort study was to assess the association of the cerebroplacental ratio (CPR) and other more conventional fetoplacental Doppler indices, circulating placental growth factor (PlGF) levels and soluble fms ...
J. Hong +6 more
wiley +1 more source
Zhongguo shiyan zhenduanxue, 2014 目的探讨血清对U937细胞分化成熟及细胞周期的影响。方法应用乙酸肉豆蔻佛波醇（PMA）诱导U937细胞分化,血清作为调节因素,通过倒置显微镜观察细胞的形态与贴壁情况并计算细胞贴壁率并依此作为细胞分化成熟的标志,采用流式细胞仪测定细胞周期的变化。结果 FCS+PMA组细胞贴壁生长;其他3组细胞悬浮生长;细胞周期测定结果显示,与FCS组相比,NOFCS、NOFCS+PMA和FCS+PMA组的G1期细胞明显增多,S期细胞明显减少 ...
曹林林 +3 more
doaj