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https://www.readbyqxmd.com/read/28626056/early-reperfusion-after-brain-ischemia-has-beneficial-effects-beyond-rescuing-neurons
#1
Masaki Tachibana, Tetsuro Ago, Yoshinobu Wakisaka, Junya Kuroda, Masahiro Shijo, Yoji Yoshikawa, Motohiro Komori, Ataru Nishimura, Noriko Makihara, Kuniyuki Nakamura, Takanari Kitazono
BACKGROUND AND PURPOSE: Recent studies show that successful endovascular thrombectomy 6 to 12 hours after stroke onset enhances functional outcomes 3 months later. In this study, we investigated the effects of reperfusion after ischemia on repair processes in the ischemic areas, as well as on functional recovery, using mouse stroke models. METHODS: We examined time-dependent histological changes and functional recovery after transient middle cerebral artery occlusion of different durations, including permanent middle cerebral artery occlusion, using the CB-17 (CB-17/lcr-+/+Jcl) mouse strain, which has poor pial collateral blood flow...
June 16, 2017: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/28625928/second-generation-cryoballoon-ablation-in-the-setting-of-left-common-pulmonary-veins-procedural-findings-and-clinical-outcome
#2
Erwin Ströker, Ken Takarada, Carlo de Asmundis, Juan-Pablo Abugattas, Giacomo Mugnai, Vedran Velagic, Valentina de Regibus, Hugo-Enrique Coutiño, Rajin Choudhury, Saverio Iacopino, Yves De Greef, Kaoru Tanaka, Pedro Brugada, Gian-Battista Chierchia
BACKGROUND: A left common pulmonary vein (LCPV) accounts as the most frequent PV variation. The use of the cryoballoon (CB) for isolating these veins, is still debatable. To date, no data are available regarding the feasibility, acute PV isolation, and clinical outcome of the second-generation CB (CB-A) in this setting. OBJECTIVE: To investigate the performance of the CB-A in patients with LCPVs. METHODS: In a total cohort of 433 patients having undergone CB-A ablation for drug-refractory atrial fibrillation (AF) together with pre-procedural CT-scanning, 146 patients presented a LCPV...
June 15, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28623669/outcomes-after-successful-percutaneous-coronary-intervention-of-calcified-lesions-using-rotational-atherectomy-cutting-balloon-angioplasty-or-balloon-only-angioplasty-before-drug-eluting-stent-implantation
#3
Björn Redfors, Akiko Maehara, Bernhard Witzenbichler, Giora Weisz, Thomas D Stuckey, Timothy D Henry, Thomas McAndrew, Roxana Mehran, Ajay J Kirtane, Gregg W Stone, Philippe Généreux
OBJECTIVES: To report adverse event rates after rotational atherectomy (RA) with contemporary drug-eluting stent (DES) implantation and compare RA to cutting balloon (CB) angioplasty and balloon-only angioplasty (BA) in the all-comers ADAPT-DES trial. BACKGROUND: Percutaneous coronary intervention (PCI) of calcified lesions is increasingly common and is associated with a high risk of adverse events. RA can ablate calcified plaque and facilitate stent delivery; however, in conjunction with first-generation DES, RA was not superior to BA alone in regard to adverse events...
June 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/28622396/mutant-fibulin-3-causes-proteoglycan-accumulation-and-impaired-diffusion-across-bruch-s-membrane
#4
Astrid Zayas-Santiago, Samuel D Cross, James B Stanton, Alan D Marmorstein, Lihua Y Marmorstein
Purpose: The mutation R345W in EFEMP1 (fibulin-3) causes macular degeneration. This study sought to determine whether proteoglycan content and diffusion across Bruch's membrane are altered in Efemp1ki/ki mice carrying this mutation or in Efemp1-/- mice. Methods: Proteoglycans in mouse Bruch's membranes were stained with Cupromeronic Blue (CB). Heparan sulfated proteoglycan (HSPG) and chondroitin/dermatan sulfate proteoglycan (C/DSPG) distributions were visualized following treatments with chondroitinase ABC (C-ABC) or nitrous acid...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28621947/cucurbit-7-uril-enables-multistimuli-responsive-release-from-the-self-assembled-hydrophobic-phase-of-a-metal-organic-polyhedron
#5
Soumen Samanta, Jeffrey Quigley, Brittany Vinciguerra, Volker Briken, Lyle Isaacs
Mixed self-assembly of ligand 1, 2, 1,6-hexanediamine (HDA) and Pd(NO3)2 afforded Fujita-type metal organic polyhedron MOP1 (diameter ≈ 8.2 nm) which is covalently functionalized with 18 cucurbit[7]uril (CB[7]) units as evidenced by 1H NMR, diffusion ordered spectroscopy NMR and transmission electron microscopy measurements. By virtue of the host-guest properties of CB[7], the inner cavity of MOP can be rendered hydrophobic by using alkylated HDA (3) as guest during self-assembly process. The hydrophobic cavity was successfully utilized to trap the hydrophobic dye Nile Red (NR) and the anticancer drug Doxorubicin (DOX)...
June 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28620658/band-gap-modulation-of-srtio3-upon-co2-adsorption
#6
Kostiantyn V Sopiha, Oleksandr I Malyi, Clas Persson, Ping Wu
Herein, CO2 chemisorption on SrTiO3(001) surfaces is studied using ab initio calculations to establish new chemical sensing mechanisms. It was found that CO2 adsorption opens the band gap of the material. However, the mechanisms are different: the CO2 adsorption on the TiO2-terminated surface neutralizes the surface states at the valence band (VB) maximum, whereas for the SrO-terminated surface it suppresses the conduction band (CB) minimum. For the TiO2-terminated surface, the effect is explained by the passivation of dangling bonds, whereas for the SrO-terminated surface, the suppression is caused by surface relaxation...
June 16, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28618139/large-scale-ex-vivo-generation-of-human-red-blood-cells-from-cord-blood-cd34-cells
#7
Yu Zhang, Chen Wang, Lan Wang, Bin Shen, Xin Guan, Jing Tian, Zhihua Ren, Xinxin Ding, Yupo Ma, Wei Dai, Yongping Jiang
The ex vivo generation of human red blood cells on a large scale from hematopoietic stem and progenitor cells has been considered as a potential method to overcome blood supply shortages. Here, we report that functional human erythrocytes can be efficiently produced from cord blood (CB) CD34(+) cells using a bottle turning device culture system. Safety and efficiency studies were performed in murine and nonhuman primate (NHP) models. With the selected optimized culture conditions, one human CB CD34(+) cell could be induced ex vivo to produce up to 200 million erythrocytes with a purity of 90...
June 15, 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28616938/construction-of-an-all-solid-state-artificial-z-scheme-system-consisting-of-bi2wo6-au-cds-nanostructure-for-photocatalytic-co2-reduction-into-renewable-hydrocarbon-fuel
#8
Meng Wang, Qiutong Han, Liang Li, Lanqin Tang, Haijin Li, Yong Zhou, Zhigang Zou
An all-solid-state Bi2WO6/Au/CdS Z-scheme system was constructed for the photocatalytic reduction of CO2 into methane in the presence of water vapor. This Z-scheme consists of ultrathin Bi2WO6 nanoplates and CdS nanoparticles as photocatalysts, and a Au nanoparticle as a solid electron mediator offering a high speed charge transfer channel and leading to more efficient spatial separation of electron-hole pairs. The photo-generated electrons from the conduction band (CB) of Bi2WO6 transfer to the Au, and then release to the valence band (VB) of CdS to recombine with the holes of CdS...
July 7, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28615039/interleukin-21-promotes-thymopoiesis-recovery-following-hematopoietic-stem-cell-transplantation
#9
Aurélie Tormo, Fatemeh Khodayarian, Yun Cui, Edouard Al-Chami, Reem Kanjarawi, Beatriz Noé, Huijie Wang, Moutih Rafei
BACKGROUND: Impaired T cell reconstitution remains a major deterrent in the field of bone marrow (BM) transplantation (BMT) due to pre-conditioning-induced damages inflicted to the thymi of recipient hosts. Given the previously reported thymo-stimulatory property of interleukin (IL)-21, we reasoned that its use post-BMT could have a profound effect on de novo T cell development. METHODS: To evaluate the effect of IL-21 on de novo T cell development in vivo, BM derived from RAG2p-GFP mice was transplanted into LP/J mice...
June 14, 2017: Journal of Hematology & Oncology
https://www.readbyqxmd.com/read/28614947/catalytic-oxidation-of-chlorobenzene-over-mnxce1-xo2-hzsm-5-catalysts-a-study-with-practical-implications
#10
Xiaole Weng, Pengfei Sun, Yu Long, Qingjie Meng, Zhongbiao Wu
Industrial-use catalysts usually encounter severe deactivation after long-term operation for catalytic oxidation of chlorinate volatile organic compounds (CVOCs), which becomes a "bottleneck" for large-scale application of catalytic combustion technology. In this work, typical acidic solid-supported catalysts of MnxCe1-xO2/HZSM-5 were investigated for the catalytic oxidation of chlorobenzene (CB). The activation energy (Ea), Brønsted and Lewis acidities, CB adsorption and activation behaviors, long-term stabilities, and surficial accumulation compounds (after ageing) were studied using a range of analytical techniques, including XPS, H2-TPR, pyridine-IR, DRIFT, and O2-TP-Ms...
June 14, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28610718/echinacea-purpurea-derived-alkylamides-exhibit-potent-anti-inflammatory-effects-and-alleviate-clinical-symptoms-of-atopic-eczema
#11
Attila Oláh, Judit Szabó-Papp, Michael Soeberdt, Ulrich Knie, Stephan Dähnhardt-Pfeiffer, Christoph Abels, Tamás Bíró
BACKGROUND: Atopic eczema (AE) is a chronic inflammatory and pruritic skin disease. There is still an unmet need for topical anti-inflammatory and anti-pruritic substances exhibiting an excellent safety profile. The endocannabinoid system is known to regulate various aspects of cutaneous barrier and immune functions, thus targeting it may be a valid approach for alleviating the symptoms of AE. OBJECTIVE: To assess the putative efficacy of Echinacea purpurea-derived alkylamides (Ec...
May 27, 2017: Journal of Dermatological Science
https://www.readbyqxmd.com/read/28609727/enhancing-the-soil-heavy-metals-removal-efficiency-by-adding-hpma-and-pbtca-along-with-plant-washing-agents
#12
Yaru Cao, Shirong Zhang, Guiyin Wang, Ting Li, Xiaoxun Xu, Ouping Deng, Yanzong Zhang, Yulin Pu
Plant washing agents-water-extracted from Coriaria nepalensis (CN), Clematis brevicaudata (CB), Pistacia weinmannifolia (PW) and Ricinus communis (RC)-are feasible and eco-friendly for soil heavy metal removal, but their single application has limited removal efficiency. To improve their metal removal efficiencies, two biodegradable assistant agents, hydrolytic polymaleic anhydride (HPMA) and 2-phosphonobutane-1,2,4-tricarboxylic acid (PBTCA), were investigated in combination with plant washing agents through batch soil washing experiments...
June 10, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28607915/engineering-cord-blood-to-improve-engraftment-after-cord-blood-transplant
#13
REVIEW
Rohtesh S Mehta, Hema Dave, Catherine M Bollard, Elizabeth J Shpall
Umbilical cord blood transplant (CBT) has traditionally been associated with slower engraftment of neutrophils, delayed immune reconstitution and consequently higher risk of infections as compared with peripheral blood progenitor cell (PBPC) or bone marrow (BM) transplants. This is primarily due to low numbers of total nucleated cells (TNCs) and the naive nature of CB immune cells. The use of double unit CB transplant (DCBT) increases the total cell dose in the graft, but it still does not produce as rapid engraftment as seen with PBPC or even BM transplants...
2017: Stem Cell Investigation
https://www.readbyqxmd.com/read/28599244/cb-1r-and-glp-1r-gene-expressions-and-oxidative-stress-in-the-liver-of-diabetic-rats-treated-with-sitagliptin
#14
Zeynep Mine Coskun, Meral Koyuturk, Sezin Karabulut, Sema Bolkent
BACKGROUND: Type 2 diabetes is a major health problem affecting millions of people. Controlled eating and regular physical activity are important for the management of type 2 diabetes. Dipeptidyl peptidase-4 enzyme (DPP-4) inhibitor sitagliptin is a potent agent for the treatment of type-2 diabetes. The aim of this study was to examine the effects of sitagliptin on the liver of rats with streptozotocin (STZ)-induced diabetes, in terms of (i) the expression levels of the cannabinoid 1 receptor (CB-1R) and glucagon-like peptide 1 receptor (GLP-1R), (ii) alterations in the number and localization of these peptides, and (iii) changes in histological and oxidative damage...
March 20, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28598733/task-context-dependent-linear-representation-of-multiple-visual-objects-in-human-parietal-cortex
#15
Su Keun Jeong, Yaoda Xu
A host of recent studies have reported robust representations of visual object information in the human parietal cortex, similar to those found in ventral visual cortex. In ventral visual cortex, both monkey neurophysiology and human fMRI studies showed that the neural representation of a pair of unrelated objects can be approximated by the averaged neural representation of the constituent objects shown in isolation. In this study, we examined whether such a linear relationship between objects exists for object representations in the human parietal cortex...
June 9, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/28598483/the-photocurrent-response-in-the-perovskite-device-based-on-coordination-polymers-structure-topology-band-gap-and-matched-energy-levels
#16
Hai-Qiang Luo, Xiao-Han Xing, Pan Zhang, Zhi-Shuo Yan, Qing-Feng Zhou, Yun Gong, Jian-Hua Lin
Using a rigid ditopic ligand, 4,5-di(4'-carboxylphenyl)benzene (H2L), three coordination polymers (CPs) formulated as MnL(H2O)2 (1), CdL(H2O) (2) and Mn2L2(DMF)3 (3) have been synthesized and structurally characterized by single-crystal X-ray diffraction. These three CPs display 2D architectures but with different topologies. The experimental data and DFT calculation indicate that CP 2 is a semiconductor, and its CB/VB energy levels match with those of the perovskite CH3NH3PbI3. A FTO/TiO2/CH3NH3PbI3/CP 2 device is fabricated and the CP-based device shows much larger photoresponse under visible light illumination (650 nm > λ > 350 nm, 100 mW cm(-2)) than the individual CP 2...
June 9, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28598308/pseudoxanthomonas-putridarboris-sp-nov-isolated-from-rotten-tree
#17
Je-Kwan Lee, Ji-Sung Oh, Woon-Dong Cho, Dong-Hyun Roh
A Gram-staining-negative, rod-shaped, motile bacterium, designated WD12T, was isolated from a rotten tree at Chungbuk National University, South Korea. WD12T grew optimally at 30-37 °C and pH 7.0-7.5 and could assimilate arbutin and potassium-5-ketogluconate. The major cellular fatty acid were iso-C16 : 0, C16 : 0, cyclo C17 : 0, iso-C15 : 0, summed features 3 (comprising C16 : 1ω7c/iso-C15 : 0 2-OH) and anteiso-C15 : 0. The major polar lipids consisted of phosphatidylethanolamine, diphosphatidylglycerol and phosphatidylglycerol...
June 9, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28596903/latin-mh-a-model-for-building-research-capacity-within-latin-america
#18
B B Bonini, R Araya, J Quayle, M Silva Evangelista, LeS N Price, P R Menezes
BACKGROUND: Latin America Treatment and Innovation Network in Mental Health (LATIN-MH) is a research hub located in Brazil and Peru that conducts a research project to help reduce the treatment gap in mental health in Latin America (LA). Besides its research core, LATIN-MH has a Capacity Building (CB) component that aims to help young researchers receive the specific training to contribute to the growing scientific production in mental health in LA. METHODS: LATIN-MH proposal in CB includes a series of actions to prepare professionals in the research area...
2017: Global Mental Health
https://www.readbyqxmd.com/read/28595666/a-brief-cognitive-behavioural-intervention-for-maladaptive-perfectionism-in-students-a-pilot-study
#19
Fernán G Arana, Mariana C Miracco, Marina S Galarregui, Eduardo G Keegan
BACKGROUND: Researchers focused on developing therapeutic strategies for perfectionism given its well-established link to the onset and maintenance of several mental disorders. Meta-analytical findings provided support for the efficacy of cognitive behavioural (CB) approaches. However, most studies have focused on the efficacy of interventions, without analysing their efficiency. AIMS: To explore the feasibility of a brief (five weekly sessions) CB group intervention focused on reducing perfectionistic concerns in Argentine students...
June 9, 2017: Behavioural and Cognitive Psychotherapy
https://www.readbyqxmd.com/read/28592427/positron-emission-tomography-imaging-of-macaques-with-tuberculosis-identifies-temporal-changes-in-granuloma-glucose-metabolism-and-integrin-%C3%AE-4%C3%AE-1-expressing-immune-cells
#20
Joshua T Mattila, Wissam Beaino, Pauline Maiello, M Teresa Coleman, Alexander G White, Charles A Scanga, JoAnne L Flynn, Carolyn J Anderson
Positron emission tomography and computed tomography imaging (PET/CT) is an increasingly valuable tool for diagnosing tuberculosis (TB). The glucose analog [(18)F]fluoro-2-deoxy-2-d-glucose ([(18)F]-FDG) is commonly used in PET/CT that is retained by metabolically active inflammatory cells in granulomas, but lacks specificity for particular cell types. A PET probe that could identify recruitment and differentiation of different cell populations in granulomas would be a useful research tool and could improve TB diagnosis and treatment...
June 7, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
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