keyword
MENU ▼
Read by QxMD icon Read
search

PBA

keyword
https://www.readbyqxmd.com/read/28803696/differential-modulation-of-glial-cell-mediated-neuroinflammation-in-plasmodium-berghei-anka-infection-by-tgf-%C3%AE-and-il-6
#1
Samrat Sarkar, Tarun Keswani, Anirban Sengupta, Soham Mitra, Arindam Bhattacharyya
Modulation of pro-inflammatory and anti-inflammatory axis and orientation of glial cell function towards neuroinflammation, were hallmark signs of cerebral malaria (CM). CM pathogenesis was concerned with the circulating levels of Interleukin 6 (IL 6) and Transforming growth factor β (TGF β). Definite roles of these two cytokines in brain related pathology remained largely unexplored. To study the effect of these two cytokines, we have examined changes in morphology and in activation profile of the glial cells after TGF β and IL 6 neutralization during CM in cortex and cerebellum of the Plasmodium berghei ANKA (PbA) infected male swiss albino mice...
August 10, 2017: Cytokine
https://www.readbyqxmd.com/read/28798155/ifn-%C3%AE-aggravates-neointimal-hyperplasia-by-inducing-endoplasmic-reticulum-stress-and-apoptosis-in-macrophages-by-promoting-ubiquitin-dependent-liver-x-receptor-%C3%AE-degradation
#2
Qiang Zhao, Dong Zhou, Hongjun You, Bowen Lou, Yan Zhang, Yuling Tian, Ning Guo, Xiaoli Chen, Yan Liu, Yue Wu, Zuyi Yuan, Juan Zhou
Neointimal hyperplasia is the main cause of restenosis after percutaneous coronary interventions (PCIs). Both IFN-γ and macrophages play nonredundant roles in the pathogenesis of vascular intimal hyperplasia; however, the underlying mechanisms remain elusive and must be further investigated. In mouse peritoneal macrophages, IFN-γ significantly accelerated degradation and up-regulated polyubiquitination of liver X receptor (LXR)-α. Signal transducer and activator of transcription 1 (STAT1) inhibitor, fludarabine, and PIAS1 knockdown reduced ubiquitination and increased the expression of LXR-α in IFN-γ-treated macrophages...
August 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28797762/ceramide-enhances-cox-2-expression-and-vsmc-contractile-hyperreactivity-via-er-stress-signal-activation
#3
Huina Zhang, Juanfen Li, Linghai Li, Pingsheng Liu, Yongxiang Wei, Zongjie Qian
Ceramide accumulation in blood vessels has been attributed to vascular dysfunction in progressive vascular complications in metabolic diseases. The present study showed that ceramide pretreatment promoted PE-induced vasoconstriction in rat endothelium-denuded vascular rings in a time- and dose-dependent manner. Endoplasmic reticulum (ER) stress inhibitors, 4-PBA and TUDCA, COX-2 inhibitors, Celecoxib and NS398, as well as PGE2 receptor antagonist AH-6809 attenuated ceramide-promoted vascular hyperreactivity...
August 7, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28794417/inhibition-of-endoplasmic-reticulum-stress-preserves-the-integrity-of-blood-spinal-cord-barrier-in-diabetic-rats-subjected-to-spinal-cord-injury
#4
Zili He, Shuang Zou, Jiayu Yin, Zhengzheng Gao, Yanlong Liu, Yanqing Wu, Huacheng He, Yulong Zhou, Qingqing Wang, Jiawei Li, Fenzan Wu, Hua-Zi Xu, Xiaofeng Jia, Jian Xiao
The blood-spinal cord barrier (BSCB) plays significance roles in recovery following spinal cord injury (SCI), and diabetes mellitus (DM) impairs endothelial cell function and integrity of BSCS. Endoplasmic reticulum (ER) stress occurs in the early stages of SCI and affects prognosis and cell survival. However, the relationship between ER stress and the integrity of BSCB in diabetic rats after SCI remains unclear. Here we observed that diabetic rats showed increased extravasation of Evans Blue (EB) dye, and loss of endothelial cells and pericytes 1 day after SCI compared to non-diabetic rats...
August 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28782770/fabrication-of-co-sio2-c-ni-submicrorattles-as-highly-efficient-catalysts-for-4-nitrophenol-reduction
#5
Xiaohui Guo, Min Zhang, Jing Zheng, Jingli Xu, Tasawar Hayat, Njud S Alharbi, Baojuan Xi, Shenglin Xiong
In this paper, an extended Stöber method has been developed to fabricate a Ni(2+)-polydopamine (PDA) complex coated on Co3[Co(CN)6]2@SiO2 composites. After one-step carbonization involving the heat treatment of a Prussian blue analogue (PBA) of Co3[Co(CN)6]2 cores and the PDA-Ni(2+) shell under a nitrogen atmosphere, homogeneous Co@SiO2@C/Ni submicrorattles were synthesized. Notably, the silica interlayer played a vital role in the formation of such Co@SiO2@C/Ni submicrorattle structures. Without the protection of SiO2, Co-Ni@C composites were obtained instead and aggregated seriously due to sintering at high temperature...
August 7, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28773050/enhancing-the-compatibility-of-poly-1-4-butylene-adipate-and-phenoxy-resin-in-blends
#6
Cheng-Fu Yang, Hsiang-Ching Wang, Chean-Cheng Su
This work concerns the enhancement in the compatibility of blends of poly (1,4-butylene adipate) (PBA) with poly (hydroxy ether of bisphenol-A) (phenoxy) via alcoholytic exchange. Results on the thermal behavior and morphology show that the blended PBA/phenoxy system exhibits a homogeneous phase and a composition-dependent glass transition temperature (Tg). The interaction parameter (χ12) of PBA/phenoxy blends was calculated using the melting point depression method and was found to be -0.336. However, the compatibilization of PBA/phenoxy blends can be enhanced by chemical exchange reactions between PBA and phenoxy upon annealing...
June 23, 2017: Materials
https://www.readbyqxmd.com/read/28772942/alizarin-red-s-confined-layer-by-layer-films-as-redox-active-coatings-on-electrodes-for-the-voltammetric-determination-of-l-dopa
#7
Shigehiro Takahashi, Iwao Suzuki, Tatsuro Sugawara, Masaru Seno, Daichi Minaki, Jun-Ichi Anzai
The preparation of redox-active coatings is a key step in fabricating electrochemical biosensors. To this goal, a variety of coating materials have been used in combination with redox-active compounds. In this study, alizarin red S (ARS) was confined in layer-by-layer (LbL) films composed of poly(ethyleneimine) (PEI) and carboxymethylcellulose (CMC) to study the redox properties. A gold (Au) disc electrode coated with PEI/CMC LbL film was immersed in an ARS solution to uptake ARS into the film. ARS was successfully confined in the LbL film through electrostatic interactions...
May 25, 2017: Materials
https://www.readbyqxmd.com/read/28772528/boronic-acid-as-glucose-sensitive-agent-regulates-drug-delivery-for-diabetes-treatment
#8
REVIEW
Li Zhao, Qiongwei Huang, Yangyang Liu, Qing Wang, Liyan Wang, Shanshan Xiao, Fei Bi, Jianxun Ding
In recent years, glucose-sensitive drug delivery systems have attracted considerable attention in the treatment of diabetes. These systems can regulate payload release by the changes of blood glucose levels continuously and automatically with potential application in self-regulated drug delivery. Boronic acid (BA), especially phenylboronic acid (PBA), as glucose-sensitive agent has been the focus of research in the design of glucose-sensitive platforms. This article reviews the previous attempts at the developments of PBA-based glucose-sensitive drug delivery systems regarding the PBA-functionalized materials and glucose-triggered drug delivery...
February 13, 2017: Materials
https://www.readbyqxmd.com/read/28749373/dosimetric-evaluation-of-a-commercial-proton-spot-scanning-monte-carlo-dose-algorithm-comparisons-against-measurements-and-simulations
#9
Jatinder Saini, Dominic Maes, Alexander Egan, Stephen R Bowen, Sara St James, Martin Janson, Tony Wong, Charles Bloch
RaySearch Americas Inc. (NY) has introduced a commercial Monte Carlo dose algorithm (RS-MC) for routine clinical use in proton spot scanning. In this report, we provide a validation of this algorithm against phantom measurements and simulations in GATE/GEANT4 software package. We also compared the performance of RayStation analytical algorithm (RS-PBA) against the RS-MC algorithm. Methods: A beam model (G-MC) for spot scanning gantry at our proton center was implemented in the GATE software package. The model was validated against measurements in a water phantom and was used for benchmarking the RS-MC...
July 27, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28747554/kaempferol-induces-hepatocellular-carcinoma-cell-death-via-endoplasmic-reticulum-stress-chop-autophagy-signaling-pathway
#10
Haiqing Guo, Wei Lin, Xiangying Zhang, Xiaohui Zhang, Zhongjie Hu, Liying Li, Zhongping Duan, Jing Zhang, Feng Ren
Kaempferol is a flavonoid compound that has gained widespread attention due to its antitumor functions. However, the underlying mechanisms are still not clear. The present study investigated the effect of kaempferol on hepatocellular carcinoma and its underlying mechanisms. Kaempferol induced autophagy in a concentration- and time-dependent manner in HepG2 or Huh7 cells, which was evidenced by the significant increase of autophagy-related genes. Inhibition of autophagy pathway, through 3-methyladenine or Atg7 siRNA, strongly diminished kaempferol-induced apoptosis...
July 12, 2017: Oncotarget
https://www.readbyqxmd.com/read/28736823/distinct-alignment-of-benzene-derivatives-in-stretched-polystyrene-and-polybutylacrylate-gels-specific-polymer-solute-interactions
#11
Thomas Niklas, Christian Steinmetzger, Franziska Rüttger, Dietmar Stalke, Michael John
We have measured the alignment of a range of benzene derivatives in cross-linked polystyrene (PS) and poly(butyl acrylate) (PBA) using a small number of residual dipolar couplings (RDCs) and simple geometric considerations. For apolar solutes in PS and protic solutes in PBA, the preferred molecular orientation does not coincide with the longest molecular axis (steric aligment). This behaviour may be explained by specific π-π and hydrogen bonding interactions between solute and polymer, respectively, the latter being confirmed by molecular dynamics (MD) simulations...
July 23, 2017: Magnetic Resonance in Chemistry: MRC
https://www.readbyqxmd.com/read/28723199/rational-design-of-a-stimuli-responsive-polymer-electrode-interface-coupled-with-in-vivo-microdialysis-for-measurement-of-sialic-acid-in-live-mouse-brain-in-alzheimer-s-disease
#12
Shushu Ding, Sumei Cao, Yingzi Liu, Ying Lian, Anwei Zhu, Guoyue Shi
Sensitive and selective monitoring of sialic acid (SA) in cerebral nervous system is of great importance for studying the role that SA plays in the pathological process of Alzheimer's disease (AD). In this work, we first reported an electrochemical biosensor based on a novel stimuli-responsive copolymer for selective and sensitive detection of SA in mouse brain. Notably, through synergetic hydrogen-bonding interactions, the copolymer could translate the recognition of SA into their conformational transition and wettability switch, which facilitated the access and enrichment of redox labels and targets to the electrode surface, thus significantly improving the detection sensitivity with the detection limit down to 0...
March 24, 2017: ACS Sensors
https://www.readbyqxmd.com/read/28718887/operative-learning-curve-trajectory-in-a-cohort-of-surgical-trainees
#13
C Brown, T Abdelrahman, N Patel, C Thomas, M J Pollitt, W G Lewis
BACKGROUND: Certification of completion of training in general surgery in the UK requires demonstration of competence in index operations by means of three level 4 competence consultant-validated procedure-based assessments (PBAs). The aim of this study was to evaluate the trajectory of operative learning curves related to PBA performance levels for curriculum-defined indicative operations with respect to numbers performed and training time. METHODS: Logbook data from consecutive higher general surgical trainees were compared with PBA evaluations to determine the relationship between PBA performance level, operative experience, training time and indicative numbers...
September 2017: British Journal of Surgery
https://www.readbyqxmd.com/read/28712870/tissue-factor-pathway-inhibitor-attenuates-er-stress-induced-inflammation-in-human-m2-polarized-macrophages
#14
Sandra Espada, Benedicte Stavik, Sverre Holm, Ellen Lund Sagen, Vigdis Bjerkeli, Mona Skjelland, Tuva B Dahl, Terje Espevik, Sandip Kanse, Per Morten Sandset, Grethe Skretting, Bente Halvorsen
Endoplasmic reticulum (ER) stress has been shown to play a key role during the initiation and clinical progression of the cardiovascular diseases, such as atherosclerosis. We have recently shown that expression of tissue factor pathway inhibitor (TFPI) in human monocyte-derived macrophages (MDMs) was induced by cholesterol crystals (CC). In the present study we aimed to determine the role of TFPI under ER stress conditions using human MDMs. qRT-PCR and immunohistochemistry analysis were performed to determine the presence of the ER stress marker CCAAT/enhancer binding protein homologous protein (CHOP) and TFPI in human carotid plaque material and also in human MDMs polarized into pro-inflammatory M1 or anti-inflammatory M2 populations...
July 13, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28681934/3-4-dihydroxybenzalacetone-and-caffeic-acid-phenethyl-ester-induce-preconditioning-er-stress-and-autophagy-in-sh-sy5y-cells
#15
Ryoichi Tomiyama, Ken Takakura, Shouhei Takatou, Thuong Manh Le, Takumi Nishiuchi, Yutaka Nakamura, Tetsuya Konishi, Seiichi Matsugo, Osamu Hori
3,4-dihydroxybenzalacetone (DBL) and Caffeic acid phenethyl ester (CAPE) are both catechol-containing phenylpropanoid derivatives with diverse bioactivities. In the present study, we analyzed the ability of these compounds to activate the unfolded protein response (UPR) and the oxidative stress response. When human SH-SY5Y neuroblastoma cells were treated with DBL or CAPE, the expression of endoplasmic reticulum (ER) stress-related genes such as HSPA5, HYOU1, DDIT3, and SEC61b increased to a larger extent in response to CAPE treatment, while that of antioxidant genes such as HMOX1, GCLM, and NQO1 increased to a larger extent in response to DBL treatment...
July 6, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28674464/assessment-of-critical-steps-of-a-gc-ms-based-indirect-analytical-method-for-the-determination-of-fatty-acid-esters-of-monochloropropanediols-mcpdes-and-of-glycidol-ges
#16
Zuzana Zelinkova, Anupam Giri, Thomas Wenzl
Fatty acid esters of 2- and 3-chloropropanediol (MCPDEs) and fatty acid esters of glycidol (GEs) are commonly monitored in edible fats and oils. A recommendation issued by the European Commission emphasizes the need of generating data on the occurrence of these substances in a broad range of different foods. So far, analytical methods for the determination of MCPDEs and GEs are fully validated only for oils, fats and margarine. This manuscript presents the assessment of critical steps in the AOCS Cd 29a-13 method for the simultaneous determination of MCPDEs and GEs in the fat phase obtained from bakery and potato products, smoked and fried fish and meat, and other cereal products...
July 2017: Food Control
https://www.readbyqxmd.com/read/28674030/s-nitrosoglutathione-reductase-gsnor-deficiency-confers-improved-survival-and-neurological-outcome-in-experimental-cerebral-malaria
#17
Robyn E Elphinstone, Rickvinder Besla, Eric A Shikatani, Ziyue Lu, Alfred Hausladen, Matthew Davies, Clinton S Robbins, Mansoor Husain, Jonathan S Stamler, Kevin C Kain
Artesunate remains the mainstay of treatment for cerebral malaria, but is less effective in later stages of disease when the host inflammatory response and blood brain barrier integrity dictate clinical outcomes. Nitric oxide (NO) is an important regulator of inflammation and microvascular integrity, and impaired NO bioactivity is associated with fatal outcomes in malaria. Endogenous NO bioactivity in mammals is largely mediated by S-nitrosothiols (SNOs). Based on these observations, we hypothesized that animals deficient in the SNO-metabolizing enzyme, S-nitrosoglutathione (GSNO) reductase (GSNOR), which exhibit enhanced S-nitrosylation, would have improved outcomes in a preclinical model of cerebral malaria...
July 3, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28672279/%C3%AE-elemene-regulates-endoplasmic-reticulum-stress-to-induce-the-apoptosis-of-nsclc-cells-through-perk-ire1%C3%AE-atf6-pathway
#18
Ying Liu, Zi-Yu Jiang, Yuan-Li Zhou, Hui-Hui Qiu, Gang Wang, Yi Luo, Jing-Bing Liu, Xiong-Wei Liu, Wei-Quan Bu, Jie Song, Li Cui, Xiao-Bin Jia, Liang Feng
Endoplasmic reticulum stress (ERs) has been regarded as an important cause for the pathogenesis of non-small-cell lung cancer (NSCLC). β-elemene is an active component in the essential oil extracted from a medicinal herb, Curcuma wenyujin, and has been reported to be effective against non-small-cell lung cancer (NSCLC). However, the potential effect and underlying mechanisms of β-elemene on regulating ERs to inhibit NSCLC are still unclear. In the present study, A549 cells and Lewis tumor-bearing C57BL/6J mice were established to evaluate this effect...
September 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/28668332/ethanol-induced-pge2-up-regulates-a%C3%AE-production-through-pka-creb-signaling-pathway
#19
Amr Ahmed Gabr, Hyun Jik Lee, Xaykham Onphachanh, Young Hyun Jung, Jun Sung Kim, Chang Woo Chae, Ho Jae Han
Ethanol abuse aggravates dementia-associated cognitive defects through the progression of Alzheimer's disease (AD) pathophysiology. Beta-site APP-cleaving enzyme 1 (BACE1) has been considered as a key regulator of AD pathogenesis by controlling amyloid beta peptide (Aβ) accumulation. In addition, previous studies reported that endoplasmic reticulum (ER) stress and neuroinflammation have been proposed in ethanol-induced neurodegeneration. Thus, we investigated the role of ER stress and PGE2, a neuroinflammation mediator, in the ethanol-stimulated BACE1 expression and Aβ production...
June 28, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28665610/activation-of-sodium-storage-sites-in-prussian-blue-analogues-via-surface-etching
#20
Wenhao Ren, Mingsheng Qin, Zixuan Zhu, Mengyu Yan, Qi Li, Lei Zhang, Dongna Liu, Liqiang Mai
Sodium-ion battery technologies are known to suffer from kinetic problems associated with the solid-state diffusion of Na(+) in intercalation electrodes, which results in suppressed specific capacity and degraded rate performance. Here, a controllable selective etching approach is developed for the synthesis of Prussian blue analogue (PBA) with enhanced sodium storage activity. On the basis of time-dependent experiments, a defect-induced morphological evolution mechanism from nanocube to nanoflower structure is proposed...
July 5, 2017: Nano Letters
keyword
keyword
54044
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"