Read by QxMD icon Read


Majdi Hajri, Marie-Anne Esteve, Omar Khoumeri, Raoudha Abderrahim, Thierry Terme, Marc Montana, Patrice Vanelle
We report a novel series of quinoxaline derivatives from which agents with antiproliferative activity have been identified. Two ethyl 3-(arylethynyl)quinoxaline-2-carboxylates demonstrated substantial antiproliferative activity against both human non-small cell lung carcinoma (A549) and glioblastoma (U87-MG) cell lines. Pyrido[4,3-b]quinoxalin-1(2H)-ones demonstrated poor activity against A549 and U87-MG cell lines. Three of the derivatives in ethyl 3-(arylethynyl)quinoxaline-2-carboxylate series demonstrated substantial antiproliferative activity...
October 13, 2016: European Journal of Medicinal Chemistry
Joanne E Brady, Danielle K Liffmann, Anthony Yartel, Natalie Kil, Alex D Federman, Joseph Kannry, Cynthia Jordan, Omar I Massoud, David R Nerenz, Kimberly A Brown, Bryce D Smith, Claudia Vellozzi, David B Rein
BACKGROUND: From December 2012-March 2014, three randomized trials, each implementing a unique intervention in primary care settings (mail recruitment [repeated-mailing], an electronic health record best practice alert [BPA], and patient-solicitation [patient-solicitation]), evaluated HCV antibody testing, diagnosis, and costs for each of the interventions compared to standard-of-care testing. Multilevel multivariable models were used to estimate the adjusted risk ratio (aRR) for receiving an HCV antibody test, and costs were estimated using activity-based costing...
October 22, 2016: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
Omar Santana-Méridas, Azucena González-Coloma, Maria Fe Andrés, Veroniki P Vidali, Moschos G Polissiou, Athanasios C Kimbaris
Essential oils from Greek Mentha species showed different chemical compositions for two populations of M. pulegium, characterized by piperitone and pulegone. M. spicata essential oil was characterized by endocyclic piperitenone epoxide, piperitone epoxide, and carvone. The bioactivities of these essential oils and their components have been tested against insect pests (Leptinotarsa decemlineata, Spodoptera littoralis and Myzus persicae), root-knot nematodes (Meloydogine javanica) and plants (Lactuca sativa, Lolium perenne, Solanum lycopersicum)...
October 21, 2016: Chemistry & Biodiversity
Omar Navarro Leija, Sanju Varghese, Mira V Han
Evolutionary constraint for insertions and deletions (indels) is not necessarily equal to constraint for nucleotide substitutions for any given region of a genome. Knowing the variation in indel-specific evolutionary rates across the sequence will aid our understanding of evolutionary constraints on indels, and help us infer how indels have contributed to the evolution of the sequence. However, unlike for nucleotide substitutions, there has been no phylogenetic method that can statistically infer significantly different rates of indels across the sequence space independent of substitution rates...
October 21, 2016: Journal of Molecular Evolution
Jyh-Ming Liou, Yu-Jen Fang, Chieh-Chang Chen, Ming-Jong Bair, Chi-Yang Chang, Yi-Chia Lee, Mei-Jyh Chen, Chien-Chuan Chen, Cheng-Hao Tseng, Yao-Chun Hsu, Ji-Yuh Lee, Tsung-Hua Yang, Jiing-Chyuan Luo, Chun-Chao Chang, Chi-Yi Chen, Po-Yueh Chen, Chia-Tung Shun, Wen-Feng Hsu, Wen-Hao Hu, Yen-Nien Chen, Bor-Shyang Sheu, Jaw-Town Lin, Jeng-Yih Wu, Emad M El-Omar, Ming-Shiang Wu
BACKGROUND: Whether concomitant therapy is superior to bismuth quadruple therapy or 14-day triple therapy for the first-line treatment of Helicobacter pylori infection remains poorly understood. We aimed to compare the efficacy and safety of 10-day concomitant therapy, 10-day bismuth quadruple therapy, and 14-day triple therapy in the first-line treatment of H pylori. METHODS: In this multicentre, open-label, randomised trial, we recruited adult patients (aged >20 years) with H pylori infection from nine medical centres in Taiwan...
October 18, 2016: Lancet
Omar Mahmoud, Lara Hathout, Sherif G Shaaban, Mohamed A Elshaikh, Sushil Beriwal, William Small
PURPOSE: The Gynecologic Oncology group (GOG) 0263 trial is currently exploring whether adding chemotherapy to adjuvant radiotherapy improves recurrence-free and/or overall survival in stage IB-IIA cervical cancer patients with pathologic intermediate-risk factors. Using the National Cancer Data Base, we evaluated the benefit of adjuvant chemoradiotherapy over adjuvant radiotherapy alone in the community practice setting. MATERIALS: The analysis included 869 stage IB-IIA cervical cancer patients who underwent radical hysterectomy retrieving intermediate-risk factors justifying adjuvant therapy...
October 18, 2016: Gynecologic Oncology
Pravas Deria, Diego A Gómez-Gualdrón, Idan Hod, Randall Q Snurr, Joseph T Hupp, Omar K Farha
Catalytic activity for acyl transfer from N-acetylimidazole (NAI) to different pyridylcarbinol (PC) regioisomers (2-PC, 3-PC, and 4-PC) is demonstrated for a set of topologically diverse, zirconium-based (porphinato)zinc metal-organic frameworks (MOFs). The MOFs studied are PCN-222, MOF-525, and NU-902, which are based on the csq, ftw, and scu topologies, respectively. The experimentally obtained reaction kinetics are discussed in light of molecular modeling results. The catalytic activity is shown to vary across the series of MOFs due to the different extent to which each topology facilitates reactant preconcentration and alignment of PC and NAI via coordination to framework porphyrin sites (orientation effects)...
October 21, 2016: Journal of the American Chemical Society
Subhadip Goswami, Lin Ma, Alex B F Martinson, Michael R Wasielewski, Omar K Farha, Joseph T Hupp
Owing to their ability to act as light-harvesting scaffolds, porphyrin-containing metal-organic frameworks (MOFs) are in the forefront of research on the application of highly ordered molecular materials to problems in solar-energy conversion. In this work, solvent assisted linker exchange (SALE) is performed on a pillared paddlewheel porphyrin containing MOF thin film to collapse a 3D-framework to a 2D-framework. The change in dimensionality of the framework is confirmed by a decrease in the film thickness, the magnitude of which is in agreement with crystallographic parameters for related bulk materials...
October 21, 2016: ACS Applied Materials & Interfaces
Purnandhu Bose, Pradip K Sukul, Omar M Yaghi, Kentaro Tashiro
We demonstrate a method for the synthesis of a water-soluble multimetallic peptidic array containing a predetermined sequence of metal centers such as Ru(II), Pt(II), and Rh(III). The compound, named as a water-soluble metal-organic complex array (WSMOCA), is obtained through 1) the conventional solution-chemistry-based preparation of the corresponding metal complex monomers having a 9-fluorenylmethyloxycarbonyl (Fmoc)-protected amino acid moiety and 2) their sequential coupling together with other water-soluble organic building units on the surface-functionalized polymeric resin by following the procedures originally developed for the solid-phase synthesis of polypeptides, with proper modifications...
October 8, 2016: Journal of Visualized Experiments: JoVE
Ursula Oestreicher, Daniel Samaga, Elizabeth Ainsbury, Ana Catarina Antunes, Ans Baeyens, Leonardo Barrios, Christina Beinke, Philip Beukes, William F Blakely, Alexandra Cucu, Andrea De Amicis, Julie Depuydt, Stefania De Sanctis, Marina Di Giorgio, Katalin Dobos, Inmaculada Dominguez, Pham Ngoc Duy, Marco E Espinoza, Farrah N Flegal, Markus Figel, Omar Garcia, Octávia Monteiro Gil, Eric Gregoire, C Guerrero-Carbajal, İnci Güçlü, Valeria Hadjidekova, Prakash Hande, Ulrike Kulka, Jennifer Lemon, Carita Lindholm, Florigio Lista, Katalin Lumniczky, Wilner Martinez-Lopez, Nataliya Maznyk, Roberta Meschini, Radia M'kacher, Alegria Montoro, Jayne Moquet, Mercedes Moreno, Mihaela Noditi, Jelena Pajic, Analía Radl, Michelle Ricoul, Horst Romm, Laurence Roy, Laure Sabatier, Natividad Sebastià, Jacobus Slabbert, Sylwester Sommer, Monica Stuck Oliveira, Uma Subramanian, Yumiko Suto, Tran Que, Antonella Testa, Georgia Terzoudi, Anne Vral, Ruth Wilkins, LusiYanti Yanti, Demetre Zafiropoulos, Andrzej Wojcik
PURPOSE: Two quality controlled inter-laboratory exercises were organized within the EU project 'Realizing the European Network of Biodosimetry (RENEB)' to further optimize the dicentric chromosome assay (DCA) and to identify needs for training and harmonization activities within the RENEB network. MATERIALS AND METHODS: The general study design included blood shipment, sample processing, analysis of chromosome aberrations and radiation dose assessment. After manual scoring of dicentric chromosomes in different cell numbers dose estimations and corresponding 95% confidence intervals were submitted by the participants...
October 21, 2016: International Journal of Radiation Biology
Omar Hasan Ali, Stefan Diem, Josef Aschwanden, Eva Markert, Abel-Jan Tasman, Joachim Mueller, Lukas Flatz
No abstract text is available yet for this article.
September 2016: JAAD Case Reports
Soula Danopoulos, Michael Krainock, Omar Toubat, Matthew Thornton, Brendan Grubbs, Denise Al Alam
Lung branching morphogenesis relies on a number of factors, including proper epithelial cell proliferation and differentiation, cell polarity and migration. Rac1, a small Rho GTPase, orchestrates a number of these cellular processes, including cell proliferation and differentiation, cellular alignment and polarization. Furthermore, Rac1 modulates both non-canonical and canonical Wnt signaling, important pathways in lung branching morphogenesis. Culture of embryonic mouse lung explants in the presence of the Rac1 inhibitor (NSC23766) resulted in a dose-dependent decrease in branching...
October 7, 2016: American Journal of Physiology. Lung Cellular and Molecular Physiology
Achraf Ammar, Mouna Turki, Hamdi Chtourou, Omar Hammouda, Khaled Trabelsi, Choumous Kallel, Osama Abdelkarim, Anita Hoekelmann, Mohamed Bouaziz, Fatma Ayadi, Tarak Driss, Nizar Souissi
PURPOSE: The aim of this study was to investigate the effect of natural Pomegranate juice supplementation on performance and acute and delayed responses of muscle soreness and biomarkers of muscle damage after a weightlifting training session. METHODS: Nine elite weightlifters (21±0.5 years) performed two Olympic-Weightlifting-sessions after either placebo (PLA) or natural pomegranate juice (POMj) supplementations. Heart rate, blood pressure and blood samples (hematological parameters, muscle damage and C-reactive protein (CRP)) were collected at rest, 3min and 48h after each session...
2016: PloS One
Kamron N Khan, Omar A Mahroo, Farrah Islam, Andrew R Webster, Anthony T Moore, Michel Michaelides
PURPOSE: To describe the presenting features and functional outcomes in a series of patients with choroidal neovascular membrane complicating BEST1-related retinopathy (Best disease and autosomal recessive bestrophinopathy). METHODS: Retrospective review of consecutive cases at a tertiary care eye hospital. Patients were identified retrospectively over an 11-year period. Records were reviewed to extract demographic as well as functional and anatomical outcome data...
October 19, 2016: Retina
Bruno L Oliveira, Zijian Guo, Omar Boutureira, Ana Guerreiro, Gonzalo Jiménez-Osés, Gonçalo J L Bernardes
The unstrained S-allyl cysteine amino acid was site-specifically installed on apoptosis protein biomarkers and was further used as a chemical handle and ligation partner for 1,2,4,5-tetrazines by means of an inverse-electron-demand Diels-Alder reaction. We demonstrate the utility of this minimal handle for the efficient labeling of apoptotic cells using a fluorogenic tetrazine dye in a pre-targeting approach. The small size, easy chemical installation, and selective reactivity of the S-allyl handle towards tetrazines should be readily extendable to other proteins and biomolecules, which could facilitate their labeling within live cells...
October 20, 2016: Angewandte Chemie
Salem A E Omar, Paul A Scattergood, Luke K McKenzie, Helen E Bryant, Julia A Weinstein, Paul I P Elliott
The complex [Os(btzpy)₂][PF₆]₂ (1, btzpy = 2,6-bis(1-phenyl-1,2,3-triazol-4-yl)pyridine) has been prepared and characterised. Complex 1 exhibits phosphorescence (λem = 595 nm, τ = 937 ns, φem = 9.3% in degassed acetonitrile) in contrast to its known ruthenium(II) analogue, which is non-emissive at room temperature. The complex undergoes significant oxygen-dependent quenching of emission with a 43-fold reduction in luminescence intensity between degassed and aerated acetonitrile solutions, indicating its potential to act as a singlet oxygen sensitiser...
October 18, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
Juan Augusto Hernández, Marissa Lepe, Rafael Macedo, Victalina Arredondo, Carlos Eliseo Cortez, Luis Jorge García, Omar Prado
A study was conducted with the objective to characterize the morphology of Socorro Island Merino sheep. A total of 67 sheep, 62 females, 26 purebred and 36 crossbred with hair breeds, and five males were scored for 10 body measurements in addition to live weight, and four racial and seven functional indices were calculated. The influence of sex and crossbreeding on the body measurements and indices was analyzed by one-way analysis of variance, and morphological harmony was determined using Spearman correlation...
October 19, 2016: Tropical Animal Health and Production
Amira Alazmi, Omar El Tall, Shahid Rasul, Mohamed N Hedhili, Shashikant P Patole, Pedro M F J Costa
The impact of post-synthesis processing in reduced graphene oxide materials for supercapacitor electrodes has been analyzed. A comparative study of vacuum, freeze and critical point drying was carried out for hydrothermally reduced graphene oxide demonstrating that the optimization of the specific surface area and preservation of the porous network are critical to maximize its supercapacitance performance. As described below, using a supercritical fluid as the drying medium, unprecedented values of the specific surface area (364 m(2) g(-1)) and supercapacitance (441 F g(-1)) for this class of materials have been achieved...
October 20, 2016: Nanoscale
Mohammed Ali Elkabir, Rehab R El-Zehery, Mohamed I Mourad, Omar Soliman, Mohamed E Helal, Ali K Refai, Mohammed E Grawish
AIMS: To evaluate the therapeutic efficacy of azithromycin (azm) and/or metronidazole (mtz) on the histopathological features of rats' gingival overgrowth (GO) induced by cyclosporine-A (CsA) in an animal model. METHODS: Ninety male albino rats were divided randomly into six equal groups. The rats of group I received corn oil via gastric feeding for 7 weeks. Group II rats were administered CsA for the same period. Groups III, IV, and V rats received CsA for 6 weeks and simultaneously in the 7th week received a monotherapy of placebo gel, azm suspension, mtz gel, respectively...
September 2016: Journal of Oral Biology and Craniofacial Research
Samseh Abdullah Noradilah, Ii Li Lee, Tengku Shahrul Anuar, Fatmah Md Salleh, Siti Nor Azreen Abdul Manap, Noor Shazleen Husnie Mohd Mohtar, Syed Muhamad Azrul, Wan Omar Abdullah, Norhayati Moktar
In the tropics, there are too few studies on isolation of Blastocystis sp. subtypes from water sources; in addition, there is also an absence of reported studies on the occurrence of Blastocystis sp. subtypes in water during different seasons. Therefore, this study was aimed to determine the occurrence of Blastocystis sp. subtypes in river water and other water sources that drained aboriginal vicinity of highly endemic intestinal parasitic infections during wet and dry seasons. Water samples were collected from six sampling points of Sungai Krau (K1-K6) and a point at Sungai Lompat (K7) and other water sources around the aboriginal villages...
2016: PeerJ
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"