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https://www.readbyqxmd.com/read/29775931/a-nanocomposite-optosensor-containing-carboxylic-functionalized-multiwall-carbon-nanotubes-and-quantum-dots-incorporated-into-a-molecularly-imprinted-polymer-for-highly-selective-and-sensitive-detection-of-ciprofloxacin
#1
Naphat Yuphintharakun, Piyaluk Nurerk, Kochaporn Chullasat, Proespichaya Kanatharana, Frank Davis, Dhassida Sooksawat, Opas Bunkoed
A nanocomposite optosensor consisting of carboxylic acid functionalized multiwall carbon nanotubes and CdTe quantum dots embedded inside a molecularly imprinted polymer (COOH@MWCNT-MIP-QDs) was developed for trace ciprofloxacin detection. The COOH@MWCNT-MIP-QDs were synthesized through a facile sol-gel process using ciprofloxacin as a template molecule, 3-aminopropylethoxysilane as a functional monomer and tetraethoxysilane as a cross-linker at a molar ratio of 1:8:20. The synthesized nanocomposite optosensor had high sensitivity, excellent specificity and high binding affinity to ciprofloxacin...
May 10, 2018: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/29774807/robotic-pyelolithotomy-extended-pyelolithotomy-nephrolithotomy-and-anatrophic-nephrolithotomy
#2
Rabii Madi, Ashok Hemal
INTRODUCTION: We are a reporting on the indications, techniques, and limitations of robotic surgery in the management of renal stones disease. Robotic surgery is a good tool to manage large kidney and ureteral stones, particularly in patients with anatomic anomalies. We describe three techniques in managing staghorn kidney stones: robotic anatrophic nephrolithotomy, robotic pyelolithotomy, and robotic nephrolithotomy. MATERIAL AND METHODS: Robotic pyelolithotomy (RP) is ideal for patients with large renal pelvis and partial staghorn stone with a wide extra-renal pelvis...
May 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29774624/what-does-it-take-to-stress-a-word-digital-manipulation-of-stress-markers-in-ataxic-dysarthria
#3
Anja Lowit, Tolulope Ijitona, Anja Kuschmann, Stephen Corson, John Soraghan
BACKGROUND: Stress production is important for effective communication, but this skill is frequently impaired in people with motor speech disorders. The literature reports successful treatment of these deficits in this population, thus highlighting the therapeutic potential of this area. However, no specific guidance is currently available to clinicians about whether any of the stress markers are more effective than others, to what degree they have to be manipulated, and whether strategies need to differ according to the underlying symptoms...
May 18, 2018: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29774102/targeting-tie-2-angiopoietin-axis-in-experimental-mesothelioma-confers-differential-responses-and-raises-predictive-implications
#4
Sophia Magkouta, Apostolos Pappas, Ioannis S Pateras, Androniki Kollintza, Charalampos Moschos, Maria-Eleni Vazakidou, Vasiliki Karavana, Vassilis G Gorgoulis, Ioannis Kalomenidis
Malignant pleural mesothelioma is resistant to currently used treatment. Angiopoieitn-1 directly promotes mesothelioma cell growth in a Tie-2-dependent fashion. Angiopoietin/Tie-2 axis may thus be valid targets for therapeutic interventions against mesothelioma. We hypothesized that a soluble angiopoietin inhibitor (Murine Tek-deltaFc) would halt mesothelioma progression in vivo by enhancing mesothelioma cell proliferation and inhibiting tumor angiogenesis. Our hypothesis was challenged on two syngeneic mesothelioma in vivo models (AB1 cells-Balb/c mice and AE17 cells-C57BL/6 mice...
April 24, 2018: Oncotarget
https://www.readbyqxmd.com/read/29773851/modeling-transcriptional-rewiring-in-neutrophils-through-the-course-of-treated-juvenile-idiopathic-arthritis
#5
Zihua Hu, Kaiyu Jiang, Mark Barton Frank, Yanmin Chen, James N Jarvis
Neutrophils in children with the polyarticular form of juvenile idiopathic arthritis (JIA) display abnormal transcriptional patterns linked to fundamental metabolic derangements. In this study, we sought to determine the effects of therapy on mRNA and miRNA expression networks in polyarticular JIA. Using exon and miRNA microarrays, we studied children with untreated active JIA (ADU, n = 35), children with active disease on therapy with methotrexate ± etanercept (ADT, n = 26), and children with inactive disease also on therapy (ID, n = 14)...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29773827/cardiac-pacemaker-channel-hcn4-inhibition-and-atrial-arrhythmogenesis-after-releasing-cardiac-sympathetic-activation
#6
Kristine Chobanyan-Jürgens, Karsten Heusser, David Duncker, Christian Veltmann, Marcus May, Heidrun Mehling, Friedrich C Luft, Christoph Schröder, Jens Jordan, Jens Tank
Clinical trials and studies with ivabradine implicate cardiac pacemaker channels (HCN4) in the pathogenesis of atrial arrhythmias. Because acute changes in cardiac autonomic tone predispose to atrial arrhythmias, we studied humans in whom profound cardiac sympathetic activation was rapidly relieved to test influences of HCN4 inhibition with ivabradine on atrial arrhythmias. We tested 19 healthy participants with ivabradine, metoprolol, or placebo in a double blind, randomized, cross-over fashion on top of selective norepinephrine reuptake inhibition with reboxetine...
May 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29772965/association-of-surgical-approach-with-complication-rate-progression-free-survival-time-and-disease-specific-survival-time-in-cats-with-mammary-adenocarcinoma-107-cases-1991-2014
#7
Francesco Gemignani, Philipp D Mayhew, Michelle A Giuffrida, Jason Palaigos, Jeffrey J Runge, David E Holt, Nicholas A Robertson, Bernard Seguin, Meaghan Walker, Ameet Singh, Julius M Liptak, Giorgio Romanelli, Marina Martano, Sarah E Boston, Cassie Lux, Roberto Busetto, William T N Culp, Katherine A Skorupski, Jenna H Burton
OBJECTIVE To evaluate potential associations between surgical approach and complication rate, progression-free survival time, and disease-specific survival time in cats with mammary adenocarcinoma. DESIGN Retrospective case series. ANIMALS 107 client-owned cats. PROCEDURES Medical records of cats that underwent surgical excision of mammary adenocarcinoma by means of a unilateral or bilateral (staged or single-session) mastectomy at 9 hospitals between 1991 and 2014 were reviewed. Relevant clinicopathologic data and details of surgical and adjuvant treatments were recorded...
June 1, 2018: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29772780/the-radon-gas-in-underground-buildings-in-clay-soils-the-plaza-balmis-shelter-as-a-paradigm
#8
Carlos Rizo Maestre, Víctor Echarri Iribarren
In healthy buildings, it is considered essential to quantify air quality. One of the most fashionable indicators is radon gas. To determine the presence of this element, which is harmful to health, in the environment, the composition of the soil is studied. The presence of radon gas within a building depends both on the terrain in which it is located and on the composition of the materials of which it is composed, and not as was previously believed, only by the composition of the soil (whether granitic or not)...
May 17, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29772709/observations-on-the-early-establishment-of-foliar-endophytic-fungi-in-leaf-discs-and-living-leaves-of-a-model-woody-angiosperm-populus-trichocarpa-salicaceae
#9
Yu-Ling Huang, Naupaka B Zimmerman, A Elizabeth Arnold
Fungal endophytes are diverse and widespread symbionts that occur in the living tissues of all lineages of plants without causing evidence of disease. Culture-based and culture-free studies indicate that they often are abundant in the leaves of woody angiosperms, but only a few studies have visualized endophytic fungi in leaf tissues, and the process through which most endophytes colonize leaves has not been studied thoroughly. We inoculated leaf discs and the living leaves of a model woody angiosperm, Populus trichocarpa , which has endophytes that represent three distantly-related genera ( Cladosporium , Penicillium , and Trichoderma )...
May 16, 2018: Journal of Fungi (Basel, Switzerland)
https://www.readbyqxmd.com/read/29772283/amphiphilic-polyurethane-hydrogels-as-smart-carriers-for-acidic-hydrophobic-drugs
#10
Lucas P Fonseca, Rafael B Trinca, Maria Isabel Felisberti
Amphiphilic hydrogels are widely reported as systems with great potential for controlled drug release. Nevertheless, the majority of studies make use of functionalization or attachment of drugs to the polymer chains. In this study, we propose a strategy of combining amphiphilic polyurethanes with pH-responsive drugs to develop smart drug carriers. While the amphiphilic character of the polymer imparts an efficient load of hydrophobic and hydrophilic drugs, the drug's characteristics determine the selectivity of the medium delivery...
May 14, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29771629/brain-uptake-of-multivalent-and-multi-specific-dvd-ig-proteins-after-systemic-administration
#11
Denise Karaoglu Hanzatian, Annette Schwartz, Farid Gizatullin, Jamie Erickson, Kangwen Deng, Ruth Villanueva, Christopher Stedman, Cristina Harris, Tariq Ghayur, Andrew Goodearl
Therapeutic monoclonal antibodies and endogenous IgG antibodies show limited uptake into the central nervous system (CNS) due to the blood-brain barrier (BBB), which regulates and controls the selective and specific transport of both exogenous and endogenous materials to the brain. The use of natural transport mechanisms, such as receptor-mediated transcytosis (RMT), to deliver antibody therapeutics into the brain have been studied in rodents and monkeys. Recent successful examples include monovalent bispecific antibodies and mono- or bivalent fusion proteins; however, these formats do not have the capability to bind to both the CNS target and the BBB transport receptor in a bivalent fashion as a canonical antibody would...
May 17, 2018: MAbs
https://www.readbyqxmd.com/read/29771509/extzbox-a-glowing-cyclophane-for-live-cell-imaging
#12
Indranil Roy, Sharan Bobbala, Jiawang Zhou, Minh T Nguyen, Siva Krishna Mohan Nalluri, Yilei Wu, Daniel Ferris, Evan Alexander Scott, Michael R Wasielewski, J Fraser Stoddart
The ideal fluorescent probe for live-cell imaging is bright, non-cytotoxic and can be delivered easily into the living cells in an efficient manner. The design of synthetic fluorophores, having all three of these properties, however, has proved to be challenging. Here, we introduce a simple, yet effective, strategy based on well-established chemistry for designing a new class of fluorescent probes for live-cell imaging. A box-like hybrid cyclophane, namely ExTzBox•4X (6•4X, X = PF6 - , Cl- ), has been synthesized by connecting an extended viologen (ExBIPY) and a dipyridyl thiazolothiazole (TzBIPY) unit in an end-to-end fashion with two p-xylylene ( p-Xy) linkers...
May 17, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29771301/anti-tnf-levels-in-cord-blood-at-birth-are-associated-with-anti-tnf-type
#13
Shannon L Kanis, Alison de Lima, Cokkie van der Ent, Dimitris Rizopoulos, C Janneke van der Woude
Background and Aims: Pregnancy guidelines for women with Inflammatory Bowel Disease (IBD) provide recommendations regarding anti-TNF cessation during pregnancy, in order to limit fetal exposure. Although infliximab (IFX) leads to higher anti-TNF concentrations in cord blood than adalimumab (ADA), recommendations are similar. We aimed to demonstrate the effect of anti-TNF cessation during pregnancy on fetal exposure, for IFX and ADA separately. Methods: We conducted a prospective single center cohort study...
May 15, 2018: Journal of Crohn's & Colitis
https://www.readbyqxmd.com/read/29771125/palladium-catalyzed-stereoselective-cyclization-of-in-situ-formed-allenyl-hemiacetals-synthesis-of-rosuvastatin-and-pitavastatin
#14
Pierre A Spreider, Bernhard Breit
A diastereoselective palladium-catalyzed cyclization of allenyl hemiacetals is described. It permits the selective synthesis of 1,3-dioxane derivatives, precursors for syn-configured 1,3-diols which make an appearance in all of the statin representatives. The reaction allows the total synthesis of Rosuvastatin and Pitavastatin in a straightforward fashion.
May 17, 2018: Organic Letters
https://www.readbyqxmd.com/read/29770689/a-ratiometric-indicator-based-on-vibration-induced-emission-for-in-situ-and-real-time-monitoring-of-gelation-processes
#15
Guangchen Sun, Haitao Zhou, Yang Liu, Yiru Li, Zhiyun Zhang, Ju Mei, Jianhua Su
Monitoring specific processes such as gelation in a ratiometric and visual manner is of scientific value and has practical implications, but remains challenging. Herein, an innovative fluorescent low-molecular-weight gelator (DPAC-CHOL) capable of revealing and self-revealing the gelation processes in situ and in real time via the ratiometric fluorescence change from orange-red to blue has been developed. By virtue of its vibration-induced emission (VIE) attribute, the gelation point, critical gelation concentration (CGC), and the internal stiffness of the gel networks of DPAC-CHOL and other gelation systems could be facilely evaluated in a ratiometric and naked-eye observable fashion...
May 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29770615/isotropic-differential-phase-contrast-microscopy-for-quantitative-phase-bio-imaging
#16
Hsi-Hsun Chen, Yu-Zi Lin, Yuan Luo
Quantitative phase imaging has been investigated to retrieve optical phase information of an object, and applied to biological microscopy and related medical studies. In recent examples, differential phase contrast (DPC) microscopy can recover phase image of thin sample under multi-axis intensity measurements in wide field scheme. Unlike conventional DPC, based on theoretical approach under partially coherent condition, we propose a new method to achieve isotropic differential phase contrast (iDPC) with high accuracy and stability for phase recovery in simple and high-speed fashion...
May 16, 2018: Journal of Biophotonics
https://www.readbyqxmd.com/read/29770213/variable-phenotypic-presentations-of-renal-involvement-in-fabry-disease-a-case-series
#17
Sarah McCloskey, Paul Brennan, John A Sayer
Fabry disease is an X-linked genetic deficiency in the alpha-galactosidase enzyme resulting in intracellular accumulation of glycosphingolipids and multisystem organ dysfunction. Typically 50% of males and 20% of affected females have renal involvement, ranging from proteinuria or reduced renal function, renal parapelvic cysts and progressive renal disease ultimately requiring transplantation or dialysis. The phenotypic presentation of Fabry disease is incredibly varied and will even vary between family members with the same confirmed genetic mutation...
2018: F1000Research
https://www.readbyqxmd.com/read/29769207/mitigating-sox2-potentiated-immune-escape-of-head-and-neck-squamous-cell-carcinoma-with-a-sting-inducing-nanosatellite-vaccine
#18
Yee Sun Tan, Kanokwan Sansanaphongpricha, Yuying Xie, Christopher R Donnelly, Xiaobo Luo, Blake R Heath, Xinyi Zhao, Emily L Bellile, Hongxiang Hu, Hongwei Chen, Peter J Polverini, Qianming Chen, Simon Young, Thomas E Carey, Jacques E Nör, Robert L Ferris, Gregory Wolf, Duxin Sun, Yu L Lei
PURPOSE: The response rates of Head and Neck Squamous Cell Carcinoma (HNSCC) to checkpoint blockade are below 20%. We aim to develop a mechanism-based vaccine to prevent HNSCC immune escape. EXPERIMENTAL DESIGN: We performed RNA-Seq of sensitive and resistant HNSCC cells to discover central pathways promoting resistance to immune killing. Using biochemistry, animal models, HNSCC microarray and immune cell deconvolution, we assessed the role of SOX2 in inhibiting STING-type I interferon (IFN-I) signaling-mediated anti-tumor immunity...
May 16, 2018: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29768916/molecular-acrobatics-in-polycyclic-frames-synthesis-of-functionalized-d3-trishomocubanes-via-rearrangement-approach
#19
Sambasivarao Kotha, Subba Rao Cheekatla
A new synthetic route to D3-trishomocubanone and oxa- D3-trishomocubane derivatives has been established by rearrangement approach. Remotely located methyl substituent in the six membered ring contributed to the acid catalyzed rearrangement of cage dione in an unusual fashion. This rearrangement approach provided an attractive route to extended D3-trishomocubanes which are not accessible by conventional multi-step synthetic sequence. For the first time, two phenyl groups were incorporated from the solvent in strained trishomocubane skeleton in an unprecedented manner via carbocation-mediated rearrangement with the aid of BF3...
May 17, 2018: Journal of Organic Chemistry
https://www.readbyqxmd.com/read/29768439/earliest-evidence-for-equid-bit-wear-in-the-ancient-near-east-the-ass-from-early-bronze-age-tell-e%C3%A1-%C3%A1-%C3%A3-fi-gath-israel
#20
Haskel J Greenfield, Itzhaq Shai, Tina L Greenfield, Elizabeth R Arnold, Annie Brown, Adi Eliyahu, Aren M Maeir
Analysis of a sacrificed and interred domestic donkey from an Early Bronze Age (EB) IIIB (c. 2800-2600 BCE) domestic residential neighborhood at Tell eṣ-Ṣâfi/Gath, Israel, indicate the presence of bit wear on the Lower Premolar 2 (LPM2). This is the earliest evidence for the use of a bit among early domestic equids, and in particular donkeys, in the Near East. The mesial enamel surfaces on both the right and left LPM2 of the particular donkey in question are slightly worn in a fashion that suggests that a dental bit (metal, bone, wood, etc...
2018: PloS One
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