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https://www.readbyqxmd.com/read/29346778/diverse-brain-myeloid-expression-profiles-reveal-distinct-microglial-activation-states-and-aspects-of-alzheimer-s-disease-not-evident-in-mouse-models
#1
Brad A Friedman, Karpagam Srinivasan, Gai Ayalon, William J Meilandt, Han Lin, Melanie A Huntley, Yi Cao, Seung-Hye Lee, Patrick C G Haddick, Hai Ngu, Zora Modrusan, Jessica L Larson, Joshua S Kaminker, Marcel P van der Brug, David V Hansen
Microglia, the CNS-resident immune cells, play important roles in disease, but the spectrum of their possible activation states is not well understood. We derived co-regulated gene modules from transcriptional profiles of CNS myeloid cells of diverse mouse models, including new tauopathy model datasets. Using these modules to interpret single-cell data from an Alzheimer's disease (AD) model, we identified microglial subsets-distinct from previously reported "disease-associated microglia"-expressing interferon-related or proliferation modules...
January 16, 2018: Cell Reports
https://www.readbyqxmd.com/read/29346731/direct-polymerization-of-the-arsenic-drug-penao-to-obtain-nanoparticles-with-high-thiol-reactivity-and-anti-cancer-efficiency
#2
Janina-Miriam Noy, Hongxu Lu, Philip Hogg, Jia-Lin Yang, Martina H Stenzel
PENAO (4-(N-(S-penicillaminylacetyl)amino) phenylarsonous acid), which is a mitochondria inhibitor that reacts with adenine nucleotide translocator (ANT), is currently being trialed in patients with solid tumors. To increase the stability of the drug, the formation of nanoparticles has been proposed. Herein, the direct synthesis of polymeric micelles based on the anti-cancer drug PENAO is presented. PENAO is readily available for amidation reaction to form PENAO MA (4-(N-(S-penicillaminylacetyl) amino) phenylarsonous acid methacrylamide) which undergoes RAFT (reversible addition fragmentation chin transfer) polymerization with poly(polyethylene glycol methyl ether methacrylate) (PEGMA) as comonomer and poly(methylmethacrylate) (pMMA) as chain transfer agent, resulting in p(MMA)-b-p(PEG-co-PENAO) block copolymers with 3-15 wt...
January 18, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29346616/racial-differences-in-family-health-history-knowledge-of-type-2-diabetes-exploring-the-role-of-interpersonal-mechanisms
#3
Jielu Lin, Christopher S Marcum, Melanie F Myers, Laura M Koehly
Collecting complete and accurate family health history is critical to preventing type 2 diabetes. Whether there are any racial difference in family health history knowledge of type 2 diabetes and whether such differences are related to interpersonal mechanisms remain unclear. We seek to identify the interpersonal mechanisms that give rise to discrepancies in family health history knowledge of type 2 diabetes in families of different racial backgrounds. We analyze informant-dyad consensus with respect to shared family history of type 2 diabetes in 127 informants of 45 families in the greater Cincinnati area (white: 28 families, 78 informants; black/African-American: 17 families, 49 informants)...
January 16, 2018: Translational Behavioral Medicine
https://www.readbyqxmd.com/read/29346572/analysis-of-experience-regulated-transcriptome-and-imprintome-during-critical-periods-of-mouse-visual-system-development-reveals-spatiotemporal-dynamics
#4
Chi-Lin Hsu, Chih-Hsuan Chou, Shih-Chuan Huang, Chia-Yi Lin, Meng-Ying Lin, Chun-Che Tung, Chun-Yen Lin, Ivan Pochou Lai, Yan-Fang Zou, Neil A Youngson, Shau-Ping Lin, Chang-Hao Yang, Shih-Kuo Chen, Susan Shur-Fen Gau, Hsien-Sung Huang
Visual system development is light-experience dependent, which strongly implicates epigenetic mechanisms in light-regulated maturation. Among many epigenetic processes, genomic imprinting is an epigenetic mechanism through which monoallelic gene expression occurs in a parent-of-origin-specific manner. It is unknown if genomic imprinting contributes to visual system development. We profiled the transcriptome and imprintome during critical periods of mouse visual system development under normal- and dark-rearing conditions using B6/CAST F1 hybrid mice...
January 15, 2018: Human Molecular Genetics
https://www.readbyqxmd.com/read/29346486/treatment-outcomes-and-adverse-events-following-in-office-angiolytic-laser-with-or-without-concurrent-polypectomy-for-vocal-fold-polyps
#5
Yu-Hsuan Lin, Chi-Te Wang, Feng-Chuan Lin, Li-Jen Liao, Wu-Chia Lo, Po-Wen Cheng
Importance: In-office angiolytic laser procedures have been used successfully as an alternative treatment for vocal fold polyps; little is known in detail about the treatment outcomes and adverse events. Objective: To examine the outcomes and incidence rates of adverse events associated with in-office angiolytic laser procedures with or without concurrent polypectomy as an alternative treatment for vocal fold polyps. Design, Setting, and Participants: Retrospective cohort study at a tertiary medical center...
January 18, 2018: JAMA Otolaryngology—Head & Neck Surgery
https://www.readbyqxmd.com/read/29346334/effect-of-gastrointestinal-bleeding-on-gastrointestinal-stromal-tumor-patients-a-retrospective-cohort-study
#6
Yuqian Huang, Rui Zhao, Yaping Cui, Yong Wang, Lin Xia, Yi Chen, Yong Zhou, Xiaoting Wu
BACKGROUND The contemporary risk classification criteria of gastrointestinal stromal tumors (GISTs) may still have room to improve. The aim of our research was to analyze the impact factors for GIST patients' relapse-free survival (RFS). Furthermore, we explore whether gastrointestinal (1) bleeding will be a valuable indicator to predict GIST patients' prognosis. MATERIAL AND METHODS R0 resection GISTs patients were retrospectively enrolled during an 8-year period at West China Hospital of Sichuan University, and all patients' data were from the WCHSU-GIST database...
January 18, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29346329/anti-phytopathogenic-and-cytotoxic-activities-of-crude-extracts-and-secondary-metabolites-of-marine-derived-fungi
#7
Dong-Lin Zhao, Dan Wang, Xue-Ying Tian, Fei Cao, Yi-Qiang Li, Cheng-Sheng Zhang
Thirty-one isolates belonging to eight genera in seven orders were identified from 141 strains that were isolated from several marine plants. Alternaria sp. and Fusarium sp. were found to be the predominant fungi. Evaluation of the anti-phytopathogenic bacterial and fungal activities, as well as the cytotoxicity of these 31 extracts, revealed that most of them displayed different levels of bioactivities. Due to their interesting bioactivities, two fungal strains-Fusarium equiseti (P18) and Alternaria sp. (P8)-were selected for chemical investigation and compounds 1-4 were obtained...
January 18, 2018: Marine Drugs
https://www.readbyqxmd.com/read/29346078/long-term-high-air-pollution-exposure-induced-metabolic-adaptations-in-traffic-policemen
#8
Chaochao Tan, Yupeng Wang, Mingyue Lin, Zhu Wang, Li He, Zhiyi Li, Yu Li, Keqian Xu
OBJECTIVE: To assess the adverse physiological changes induced by long-term exposure to PM2.5. METHODS: Totally 183 traffic policemen and 88 office policemen as the control group, were enrolled in this study. The concentrations of PM2.5 in both the working places of traffic and office policemen were obtained. Detailed personal questionnaires and conventional laboratory tests including hematology, fasting blood glucose, blood lipids, liver, kidney, immunity and tumor-related markers were conducted on all participants of this study...
January 5, 2018: Environmental Toxicology and Pharmacology
https://www.readbyqxmd.com/read/29346066/expression-of-autophagy-related-genes-in-chronic-lymphocytic-leukemia-is-associated-with-disease-course
#9
Yi-Lin Kong, Ying Huang, Jia-Zhu Wu, Xin Cao, Jin-Hua Liang, Yi Xia, Wei Wu, Lei Cao, Hua-Yuan Zhu, Li Wang, Lei Fan, Jian-Yong Li, Wei Xu
Autophagy leads cells to different fates in various cell types and under diverse contexts. Chronic lymphocytic leukemia (CLL), an incurable hematologic neoplasm, has highly variable course and its heterogeneity prompts interest in exploring autophagic trajectories in CLL. We detected the mRNA levels of two autophagy-related genes, BECN1 and ATG5, assessed the association between expression levels and clinical characteristics, and did survival analysis. One hundred and six patients with CLL and fifty healthy controls were enrolled in the present study...
January 3, 2018: Leukemia Research
https://www.readbyqxmd.com/read/29345913/non-centrosymmetric-rbnamgp2o7-with-unprecedented-thermo-induced-enhancement-of-second-harmonic-generation
#10
Sangen Zhao, Xiaoyan Yang, Yi Yang, Xiaojun Kuang, Fengqi Lu, Pai Shan, Zhihua Sun, Zheshuai Lin, Maochun Hong, Junhua Luo
It is of great difficulty to obtain deep-UV transparent materials with enhanced second harmonic generation (SHG), mainly limited by the theoretically poor transparency of these materials in the deep-UV spectral region. Here we report a new non-centrosymmetric, deep-UV transparent phosphate RbNaMgP2O7, which undergoes a thermo-induced reversible phase transition (at a high temperature of 723 K) and correspondingly an evident SHG enhancement up to ~1.5 times. The phase transition is aroused by the twist of [P2O7]4- dimers with deviation from the P-O-P equilibrium positions...
January 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29345900/high-performance-ga2o3-anode-for-lithium-ion-batteries
#11
Xun Tang, Xin Huang, Yongmin Huang, Yong Gou, James Pastore, Yao Yang, Yin Xiong, Jiangfeng Qian, Joel D Brock, Juntao Lu, Li Xiao, Héctor D Abruña, Lin Zhuang
There is a great deal of interest in developing battery systems that can exhibit self-healing behavior, thus enhancing cycleability. Given that gallium (Ga) is a metal that melts near room temperature, we wanted to test if it could be employed as a self-healing anode material for lithium ion batteries (LIBs). However, Ga nanoparticles (NPs), when directly applied, tended to aggregate upon charge/discharge cycling. To address this issue, we employed carbon-coated Ga2O3 NPs as an alternative. By controlling the pH of the precursor solution, highly dispersed and ultra-fine Ga2O3 NPs, embedded in carbon shells, could be synthesized through a hydrothermal carbonization (HTC) method...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29345850/effects-of-glutaraldehyde-didecyldimethylammonium-bromide-combined-disinfectant-on-the-cell-surface-of-staphylococcus-aureus
#12
Wenshu Lin, Jialin Yi, Yuelin Zhang, Zhirui Deng, Qin Chen, Bing Niu
AIMS: The effects of a new glutaraldehyde-didecyldimethylammonium bromide combination disinfectant (GD) on the cell surface of Staphylococcus aureus, a representative Gram-positive bacterium, were investigated in this study. METHODS AND RESULTS: Results of bacterial surface structural analysis showed that GD significantly changed the bacterial morphology. The membrane fluidity decreased and outer membrane permeabilization increased after contact with GD. Furthermore, the integrity of the cytoplasmic membrane was destroyed by over 99% after exposure to GD for a short time...
January 18, 2018: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29345776/allyl-isothiocyanate-ameliorates-obesity-by-inhibiting-galectin-12
#13
Chia-Wen Lo, Chih-Sheng Chen, Ying-Chi Chen, Yu-An Hsu, Chi-Chun Huang, Ching-Yao Chang, Chao-Jen Lin, Cheng-Wen Lin, Hui-Ju Lin, Fu-Tong Liu, Lei Wan
SCOPE: The aim of this study was to investigate the signaling pathways by which allyl isothiocyanate (AITC) reduces adipocyte differentiation and the efficacy of AITC in suppressing galectin-12 levels as a therapeutic for high fat diet (HFD)-induced obesity. METHODS AND RESULTS: AITC presents anti-adipogenic effects on 3T3-L1 cells by decreasing lipid droplet accumulation in a dose-dependent manner. AITC suppresses 3T3-L1 differentiation into adipocytes by decreasing galectin-12 expression and by down-regulating key adipogenic transcription factors...
January 18, 2018: Molecular Nutrition & Food Research
https://www.readbyqxmd.com/read/29345755/expression-of-hepatic-progenitor-cell-markers-in-acute-cellular-rejection-of-liver-allografts-an-immunohistochemical-study
#14
Regina Cheuk-Lam Lo, Kristy Kwan-Shuen Chan, Carmen Oi-Ning Leung, Irene Oi-Lin Ng
BACKGROUND: Hepatic progenitor cells (HPC) are induced following liver injury to facilitate regeneration. Acute cellular rejection (ACR) is a common complication after liver transplantation as a result of immune-mediated liver injury. In this study we characterized HPC phenotype in liver allograft biopsy with ACR. We also explored the correlation between expression HPC immunophenotype and clinicopathological parameters. METHODS: Forty-four liver allograft biopsies performed between 2008-2016 in a single center with histologically proven ACR were examined for immunohistochemical expression of HPC markers CK19 and Sox9...
January 18, 2018: Clinical Transplantation
https://www.readbyqxmd.com/read/29345710/small-degree-of-anisotropic-wetting-on-self-similar-hierarchical-wrinkled-surfaces
#15
Gaojian Lin, Qiuting Zhang, Cunjing Lv, Yichao Tang, Jie Yin
We studied the wetting behavior of multiscale self-similar hierarchical wrinkled surfaces. The hierarchical surface was fabricated on poly(dimethylsiloxane) (PDMS) substrates by manipulating the sequential strain release and combined plasma/ultraviolet ozone (UVO) treatment. The generated structured surface shows an independently controlled dual-scale roughness with level-1 small-wavelength wrinkles (wavelength of 700-1500 nm and amplitude of 50-500 nm) resting on level-2 large-wavelength wrinkles (wavelength of 15-35 μm and amplitude of 3...
January 18, 2018: Soft Matter
https://www.readbyqxmd.com/read/29345699/theoretical-investigations-on-the-unsymmetrical-effect-of-%C3%AE-link-zn-porphyrin-sensitizers-on-the-performance-for-dye-sensitized-solar-cells
#16
Miao Xie, Fu-Quan Bai, Jinjian Wang, Yue-Qing Zheng, Zhenyang Lin
Dye sensitizers play an important role in dye-sensitized solar cells (DSSCs). As a promising strategy for the design of novel porphyrin sensitizers, the asymmetric modification of the porphyrin ring to meso-link porphyrin sensitizer has emerged in recent years, which can improve the light-harvesting properties and enhance the electron distribution. In this work, in order to reveal the essence of the effect of unsymmetrical substitution on the performance of β-link porphyrin dyes in DSSCs, four kinds of common β-link porphyrin dyes with different structures are calculated by using density functional theory (DFT) and time-dependent density functional theory (TD-DFT)...
January 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29345421/synthesis-of-histidine-containing-oligopeptides-via-histidine-promoted-peptide-ligation
#17
Kai-Jin Huang, Yi-Chen Huang, Yuya Angel Lin
Histidine-containing peptides are valuable therapeutic agents for treatment of neurodegenerative diseases. However, the synthesis of histidine-containing peptides is not trivial due to the potential of imidazole sidechain of histidine to act as a nucleophile if unprotected. A peptide ligation method utilizing the imidazole sidechain of histidine has been developed. The key imidazolate intermediate that acts as an internal acyl transfer catalyst during ligation is generated by deprotonation. Transesterification with amino acids or peptides tethered with C-terminal thioester followed by N to N acyl shifts led to the final ligated products...
January 18, 2018: Chemistry, An Asian Journal
https://www.readbyqxmd.com/read/29345339/the-role-of-cdk5-mediated-drp1-phosphorylation-in-a%C3%AE-1-42-induced-mitochondrial-fission-and-neuronal-apoptosis
#18
Miao-Yu Guo, Lei Shang, Yang-Yang Hu, Li-Ping Jiang, Yu-Ying Wan, Qin-Qin Zhou, Kun Zhang, Hong-Fei Liao, Jing-Lin Yi, Xiao-Jian Han
Alzheimer's disease, one of the most common neurodegenerative diseases, is pathologically characterized by Amyloid beta containing plaques and neurofibrillary tangles. Amyloid beta (Aβ) induces neuronal apoptosis through the intracellular Ca2+ increase, subsequent hyperactivation of cyclin-dependent kinase 5 (Cdk5) and mitochondrial abnormality. Recently, Cdk5 was identified as an upstream regulator of mitochondrial fission during neuronal apoptosis, but the underlying mechanism remains unclear. Here, in vitro phosphorylation assays showed that Cdk5 could phosphorylate the recombinant Drp1 at Serine 579...
January 18, 2018: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29345196/surfactant-protein-c-dampens-inflammation-by-decreasing-jak-stat-activation-during-lung-repair
#19
Huiyan Jin, Andrzej K Ciechanowicz, Alanna R Kaplan, Lin Wang, Ping Xia Zhang, Yi-Chien Lu, Rachel E Tobin, Brooke A Tobin, Lauren Cohn, Caroline J Zeiss, Patty J Lee, Emanuela M Bruscia, Diane S Krause
Surfactant Protein C (SPC), a key component of pulmonary surfactant, also plays a role in regulating inflammation. SPC deficiency in patients and mouse models is associated with increased inflammation and delayed repair, but the key drivers of SPC-regulated inflammation in response to injury are largely unknown. This study focuses on a new mechanism of SPC as an anti-inflammatory molecule using SPC-TK/SPC-KO (surfactant protein C-thymidine kinase/surfactant protein C knockout) mice, which represent a novel sterile injury model that mimics clinical acute respiratory distress syndrome (ARDS)...
January 18, 2018: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/29345054/isoflurane-anesthesia-in-aged-mice-and-effects-of-a1-adenosine-receptors-on-cognitive-impairment
#20
Chun-Long Zuo, Chun-Man Wang, Jin Liu, Ting Shen, Jiang-Ping Zhou, Xin-Rui Hao, Yi-Zhao Pan, Hua-Cheng Liu, Qing-Quan Lian, Han Lin
AIMS: Isoflurane may not only accelerate the process of Alzheimer's disease (AD), but increase the risk of incidence of postoperative cognitive dysfunction (POCD). However, the underlying mechanisms remain unknown. This study was designed to investigate whether isoflurane contributed to the POCD occurrence through A1 adenosine receptor (A1AR) in aged mice. METHODS: We assessed cognitive function of mice with Morris water maze (MWM) and then measured expression level of two AD biomarkers (P-tau and Aβ) and a subtype of the NMDA receptor (NR2B) in aged wild-type (WT) and homozygous A1 adenosine receptor (A1AR) knockout (KO) mice at baseline and after they were exposed to isoflurane (1...
January 17, 2018: CNS Neuroscience & Therapeutics
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