keyword
MENU ▼
Read by QxMD icon Read
search

han cheng

keyword
https://www.readbyqxmd.com/read/29792807/micelles-protect-intact-metallo-supramolecular-block-copolymer-complexes-from-solution-to-gas-phase-during-electrospray-ionization
#1
Kai Hung Huang, Tsung-Han Tu, Shi-Cheng Wang, Yi-Tsu Chan, Cheng-Chih Hsu
Supramolecular diblock copolymers using metal-ligand coordination can be synthesized under ambient conditions by delicate design of the end groups of the homopolymer chains. However, mass spectrometric analysis of such metallo-supramolecular copolymers is challenging. One of the reasons is the nonpolarity of the polymer chains, making it hard to disperse the complexes in electrospray ionization (ESI)-friendly environments. The other difficulty is the noncovalent nature of such copolymers, which is easily disrupted during the ionization...
May 24, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29792356/isochromanes-from-aspergillus-fumigatus-an-endophytic-fungus-from-cordyceps-sinensis
#2
Xiao-Hua Li, Xue-Hua Han, Ling-Ling Qin, Jun-Lin He, Zhi-Xing Cao, Yu-Cheng Gu, Da-Le Guo, Yun Deng
Four previously undescribed isochromanes were isolated from the fermentation broth of an endophytic fungus Aspergillus fumigatus, which was obtained from the fruiting body of Cordyceps sinensis. Their structures were elucidated through extensive spectroscopic analyses. One racemic isochromane was further purified by chiral HPLC to yield a pair of enantiomers and their absolute configurations were determined by quantum chemical ECD calculations. These isolated compounds were evaluated for cytotoxicity against two cell lines (MV4-11 and MDA-ME-231) and the result showed that compounds 1a and 2 exhibited moderate growth inhibition against MV4-11 cell line...
May 24, 2018: Natural Product Research
https://www.readbyqxmd.com/read/29792171/embryonic-transcriptome-and-proteome-analyses-on-hepatic-lipid-metabolism-in-chickens-divergently-selected-for-abdominal-fat-content
#3
Wei Na, Yuan-Yuan Wu, Peng-Fei Gong, Chun-Yan Wu, Bo-Han Cheng, Yu-Xiang Wang, Ning Wang, Zhi-Qiang Du, Hui Li
BACKGROUND: In avian species, liver is the main site of de novo lipogenesis, and hepatic lipid metabolism relates closely to adipose fat deposition. Using our fat and lean chicken lines of striking differences in abdominal fat content, post-hatch lipid metabolism in both liver and adipose tissues has been studied extensively. However, whether molecular discrepancy for hepatic lipid metabolism exists in chicken embryos remains obscure. RESULTS: We performed transcriptome and proteome profiling on chicken livers at five embryonic stages (E7, E12, E14, E17 and E21) between the fat and lean chicken lines...
May 23, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29790675/loss-of-cyclin-dependent-kinase-like-2-predicts-poor-prognosis-in-gastric-cancer-and-its-overexpression-suppresses-cells-growth-and-invasion
#4
Chia-Lang Fang, Yih-Huei Uen, Han-Kun Chen, You-Cheng Hseu, Chih-Chan Lin, Shih-Ting Hung, Ding-Ping Sun, Kai-Yuan Lin
Cyclin-dependent kinase-like 2 (CDKL2), a new member of the cyclin-dependent kinase family, may be involved in gastric cancer (GC) progression. Thus, we conducted this study to explore the clinical effect of CDKL2 in GC. Immunohistochemistry was used to measure CDKL2 levels in gastric tissues. The association of a high CDKL2 level with clinical and pathological characteristics, and the correlation between the CDKL2 level and disease-free and overall survival were analyzed. Transfection was employed to overexpress CDKL2 in GC cells and to investigate the effect of CDKL2 overexpression on cell proliferation and invasion...
May 23, 2018: Cancer Medicine
https://www.readbyqxmd.com/read/29790525/dna-decorated-cu-9-s-5-nanoparticles-as-nir-light-responsive-drug-carriers-for-tumor-chemo-phototherapy
#5
Shuang Liang, Zhongxi Xie, Yi Wei, Ziyong Cheng, Yanqiu Han, Jun Lin
Recently, near-infrared (NIR) light responsive drug delivery systems have attracted much attention for tumor therapy. Herein, we have successfully constructed a smart nanocarrier system Cu9S5-PEI-DNA-DOX (labelled as CPD-DOX) based on the self-assembly of hydrophobic Cu9S5 nanoparticles (NPs), poly(ethylene imine) (PEI), double-stranded DNA (dsDNA) segments and the anti-cancer drug doxorubicin (DOX). Among them, Cu9S5 NPs can serve as a nano-transducer for absorbing and converting near-infrared light to heat...
May 23, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/29790352/constructing-sensitive-and-fast-lead-free-single-crystalline-perovskite-photodetectors
#6
Bin Yang, Ya-Juan Li, Yu-Xuan Tang, Xin Mao, Cheng Luo, Mei-Shan Wang, Wei-Qiao Deng, Ke-Li Han
We developed a high-performance photodetector based on (CH3 NH3 )3 Sb2 I9 (MA3 Sb2 I9 ) microsingle crystals (MSCs). The MA3 Sb2 I9 single crystals exhibit a low-trap state density of ∼1010 cm-3 and a long carrier diffusion length reaching 3.0 μm, suggesting its great potential for optoelectronic applications. However, the centimeter single crystal (CSC)-based photodetector exhibits low responsivity (10-6 A/W under 1 sun illumination) due to low charge-carrier collection efficiency. By constructing the MSC photodetector with efficient charge-carrier collection, the responsivity can be improved by three orders of magnitude (under 1 sun illumination) and reach 40 A/W with monochromatic light (460 nm)...
May 24, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29789419/detection-of-bladder-cancer-via-microfluidic-immunoassay-and-single-cell-dna-copy-number-alteration-analysis-of-captured-urinary-exfoliated-tumor-cells
#7
Anqi Chen, Guanghou Fu, Zhijie Xu, Yukun Sun, Xiaoyi Chen, Kok Suen Cheng, Kuang Hong Neoh, Zhewen Tang, Shifu Chen, Ming Liu, Tanxiao Huang, Yun Dai, Qibo Wang, Jing Jin, Baiye Jin, Ray P S Han
The increasing incidence of bladder cancer (BC) and its high rate of recurrence over a 5-year period necessitate the need for diagnosis and surveillance amelioration. Cystoscopy and urinary cytology are the current tools, and molecular techniques such as BTA stat, NMP22, survivin mRNA, and urovysion FISH have attracted attention, however, they suf-fer from insufficient sensitivity or specificity. We developed a novel microfluidic approach for harvesting intact urinary-exfoliated tumor cells (UETCs), either individually or in clus-ters, in a clean and segregated environment, which is crucial to minimize cross-contamination and misreads...
May 22, 2018: Cancer Research
https://www.readbyqxmd.com/read/29787634/confined-ultrathin-pd-ce-nanowires-with-outstanding-moisture-and-so2-tolerance-in-methane-combustion
#8
Honggen Peng, Cheng Rao, Ning Zhang, Xiang Wang, Wenming Liu, Wenting Mao, Lu Han, Pengfei Zhang, Sheng Dai
Pd-CeOx solid solutions have demonstrated promising performance in industrial and environmental catalysis. However, challenges such as severe growth and aggregation of Pd and thermal-, vapor- or SO2-induced poisoning still obstruct their path toward real-world applica-tions. Herein we develop an efficient strategy (enhanced metal-oxide interaction and core-shell confinement to inhibit the sintering of noble metal) for design and synthesis of confined ultrathin Pd-CeOx nan-owire (2.4 nm) catalysts for methane combustion, which enable CH4 total oxidation at a low temperature of 350C, much lower than that (425C) of a commercial Pd/Al2O3 catalyst...
May 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29786037/preliminary-outcome-of-individualized-abdominoperineal-excision-for-locally-advanced-low-rectal-cancer
#9
Yi Zheng, Jia-Gang Han, Zhen-Jun Wang, Zhi-Gang Gao, Guang-Hui Wei, Zhi-Wei Zhai, Bao-Cheng Zhao
Background: The introduction of individualized abdominoperineal excision (APE) may minimize operative trauma and reduce the rate of complications. The purpose of this study was to evaluate the safety and efficacy of individualized APE for low rectal cancer. Methods: Fifty-six patients who underwent individualized APE from June 2011 to June 2015 were evaluated retrospectively in Beijing Chaoyang Hospital, Capital Medical University. The main outcome measures were circumferential resection margin (CRM) involvement, intraoperative perforation, postoperative complications, and local recurrence...
June 5, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29785433/the-immunomodulatory-activity-and-mechanism-of-docosahexenoic-acid-dha-on-immunosuppressive-mice-models
#10
Lirong Han, Huanna Lei, Ziwei Tian, Xu Wang, Dai Cheng, Chunling Wang
In this study, the immunomodulatory activity of docosahexaenoic acid (DHA) on the immunosuppressive BALB/c mice model and its molecular mechanism are elucidated. It was found that the weight indexes of the spleen and thymus were significantly increased by DHA (44.0 mg kg-1 and 88.0 mg kg-1) treatment in the prevention or cure groups. The result of macrophages showed that DHA (44.0 mg kg-1 and 88.0 mg kg-1) could promote the proliferation and phagocytosis activity of macrophages in the prevention or cure groups...
May 22, 2018: Food & Function
https://www.readbyqxmd.com/read/29783643/hydroxysafflor-yellow-a-attenuates-lipopolysaccharide-induced-neurotoxicity-and-neuroinflammation-in-primary-mesencephalic-cultures
#11
Tian Wang, Yu-Xin Ding, Jie He, Cheng-Jun Ma, Yue Zhao, Zhen-Hua Wang, Bing Han
Lipopolysaccharide (LPS)-induced neuroinflammation triggers and accelerates the pathogenesis of Parkinson's disease (PD). Carthamus tinctorius L., a traditional Chinese medicine, has been widely used for the treatment of cerebrovascular disease. Hydroxysafflor Yellow A (HSYA) is an active component of C. tinctorius . The purpose of this study was to investigate whether HSYA could attenuate LPS-induced neurotoxicity and neuroinflammation in primary mesencephalic cultures. Cell viability was measured by MTT and LDH assays...
May 18, 2018: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29782793/zinc-ii-histidine-induced-collagen-peptide-assemblies-morphology-modulation-and-hydrolytic-catalysis-evaluation
#12
Yi-Han Ting, Hsuan-Ju Chen, Wan-Jung Cheng, Jia-Cherng Horng
Collagen-related materials have many potential biomedical applications because of their high biocompatibility and biodegradability. Designed collagen-mimetic peptides (CMPs) could self-assemble into supramolecular structures via a variety of interactions. In particular, metal-ligand interactions can induce microscale sizes of collagen assemblies. Our previous study also successfully applied metal-histidine coordination method to promote the self-assembly of CMPs into micrometers of constructs. In an effort to broaden the metal-induced strategies on assembling designed CMPs and explore the new insights into their assembly process, herein we designed and synthesized a series of short CMPs with one or more histidine residues incorporated into the peptides and used Zn(II) to induce the formation of collagen assembled microstructures...
May 21, 2018: Biomacromolecules
https://www.readbyqxmd.com/read/29781807/word-recognition-re-thinking-prosthetic-vision-evaluation
#13
Shui'Er Han, Cheng Qiu, Kassandra R Lee, JaeHyun Jung, Eli Peli
Evaluations of vision prostheses and sensory substitution devices have frequently relied on repeated training and testing with the same small set of items. These multiple forced-choice tasks have been shown to produce above chance performance in blind patients, but it is unclear if the observed performance represents restoration of vision that transfers to novel, untrained items. Here, we tested the generalizability of the forced-choice paradigm on the discrimination of low-resolution word images. Extensive visual training was conducted with the same 10 words used in previous BrainPort tongue stimulating studies...
May 21, 2018: Journal of Neural Engineering
https://www.readbyqxmd.com/read/29780546/modified-nucleoside-triphosphates-exist-in-mammals
#14
Han-Peng Jiang, Jun Xiong, Fei-Long Liu, Cheng-Jie Ma, Xing-Lin Tang, Bi-Feng Yuan, Yu-Qi Feng
DNA and RNA contain diverse chemical modifications that exert important influences in a variety of cellular processes. In addition to enzyme-mediated modifications of DNA and RNA, previous in vitro studies showed that pre-modified nucleoside triphosphates (NTPs) can be incorporated into DNA and RNA during replication and transcription. Herein, we established a chemical labeling method in combination with liquid chromatography-electrospray ionization-mass spectrometry (LC-ESI-MS) analysis for the determination of endogenous NTPs in the mammalian cells and tissues...
May 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29778021/the-homing-of-human-umbilical-cord-derived-mesenchymal-stem-cells-and-the-subsequent-modulation-of-macrophage-polarization-in-type-2-diabetic-mice
#15
Yaqi Yin, Haojie Hao, Yu Cheng, Jieqing Gao, Jiejie Liu, Zongyan Xie, Qi Zhang, Li Zang, Weidong Han, Yiming Mu
Umbilical cord-derived mesenchymal stem cells (UC-MSCs), with both immunomodulatory and pro-regenerative properties, are promising for the treatment of type 2 diabetes mellitus (T2DM). As efficient cell therapy largely relies on appropriate homing to target tissues, knowing where and to what extent injected UC-MSCs have homed is critically important. However, bio-distribution data for UC-MSCs in T2DM subjects are extremely limited. Beneficial effects of UC-MSCs on T2DM subjects are associated with increased M2 macrophages, but no systemic evaluation of M2 macrophages has been performed in T2DM individuals...
May 15, 2018: International Immunopharmacology
https://www.readbyqxmd.com/read/29777907/novel-snps-of-wnk1-and-akr1c3-are-associated-with-preeclampsia
#16
Cheng-Juan Sun, Lin Li, Xueyan Li, Wei-Yuan Zhang, Xiao-Wei Liu
Preeclampsia is a hypertensive disorder of pregnancy and is one of the most common causes of poor perinatal outcomes. Preeclampsia increases the risk of hypertension in the future. Variants of WNK1 (lysine deficient protein kinase 1), ADRB2 (β2 adrenergic receptor), NEDD4L (ubiquitin-protein ligase NEDD4-like), KLK1 (kallikrein 1) contribute to hypertension, and AKR1C3 (aldo-keto reductase family1 member C3), is associated with preeclampsia. The association of single nucleotide polymorphisms (SNPs) in these five candidate preeclampsia susceptibility genes and the related traits in Chinese individuals were investigated...
May 16, 2018: Gene
https://www.readbyqxmd.com/read/29777164/mrna-treatment-produces-sustained-expression-of-enzymatically-active-human-adamts13-in-mice
#17
Susan Liu-Chen, Brendan Connolly, Lei Cheng, Romesh R Subramanian, Zhaozhong Han
Thrombotic thrombocytopenic purpura (TTP) is primarily caused by deficiency of ADAMTS13 within the blood stream due to either genetic defects or presence of inhibitory autoantibodies. Preclinical and clinical studies suggest that enzyme replacement therapy with recombinant human ADAMTS13 protein (rhADAMTS13) is effective and safe in treatment of TTP. However, frequent dosing would be required due to the relatively short half-life of rhADAMTS13 in circulation as well as the presence of inhibitory autoantibodies that collectively result in the poor pharmacological profile of rhADAMTS13...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776966/loss-of-tigar-induces-oxidative-stress-and-meiotic-defects-in-oocytes-from-obese-mice
#18
Haichao Wang, Qing Cheng, Xiaoyan Li, Feifei Hu, Longsen Han, Hao Zhang, Ling Li, Juan Ge, Xiaoyan Ying, Xuejiang Guo, Qiang Wang
Maternal obesity has been reported to impair oocyte quality in mice, however, the underlying mechanisms remain unclear. In the present study, by conducting a comparative proteomic analysis, we identified a reduced expression of TIGAR protein in ovulated oocytes from high-fat diet (HFD)-fed mice. Specific depletion of TIGAR in mouse oocytes results in the marked elevation of reactive oxygen species (ROS) levels and the failure of meiotic apparatus assembly. Importantly, forced expression of TIGAR in HFD oocytes not only attenuates ROS production, but also partly prevents spindle disorganization and chromosome misalignment during meiosis...
May 18, 2018: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/29776929/antibacterial-effects-of-phage-lysin-lysgh15-on-planktonic-cells-and-biofilms-of-diverse-staphylococci
#19
Yufeng Zhang, Mengjun Cheng, Hao Zhang, Jiaxin Dai, Zhimin Guo, Xinwei Li, Yalu Ji, Ruopeng Cai, Hengyu Xi, Xinwu Wang, Yibing Xue, Changjiang Sun, Xin Feng, Liancheng Lei, Wenyu Han, Jingmin Gu
Treatment of infections caused by staphylococci has become more difficult because of the emergence of multidrug-resistant strains as well as biofilm formation. In this study, we observed the ability of the phage lysin LysGH15 to eliminate staphylococcal planktonic cells and biofilms formed by Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus haemolyticus and Staphylococcus hominis All these strains were sensitive to LysGH15, showing reductions in bacterial counts of approximately 4 log units within 30 min after treatment with 20 μg/mL LysGH15, and the minimum inhibitory concentrations (MICs) ranged from 8 μg/mL to 32 μg/mL...
May 18, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29775597/mapping-the-mouse-cell-atlas-by-microwell-seq
#20
Xiaoping Han, Renying Wang, Yincong Zhou, Lijiang Fei, Huiyu Sun, Shujing Lai, Assieh Saadatpour, Ziming Zhou, Haide Chen, Fang Ye, Daosheng Huang, Yang Xu, Wentao Huang, Mengmeng Jiang, Xinyi Jiang, Jie Mao, Yao Chen, Chenyu Lu, Jin Xie, Qun Fang, Yibin Wang, Rui Yue, Tiefeng Li, He Huang, Stuart H Orkin, Guo-Cheng Yuan, Ming Chen, Guoji Guo
No abstract text is available yet for this article.
May 17, 2018: Cell
keyword
keyword
114617
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"