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https://www.readbyqxmd.com/read/28445965/molecular-docking-3d-qsar-and-structural-optimization-on-imidazo-pyridine-derivatives-dually-targeting-at1-and-pparg
#1
Jun Zhang, Qing-Qing Hao, Xin Liu, Zhi Jing, Wen-Qing Jia, Shu-Qing Wang, Wei-Ren Xu, Xian-Chao Cheng, Run-Ling Wang
Telmisartan, a bifunctional agent of blood pressure lowering and glycemia reduction, was previously reported to antagonize angiotensin II type 1 (AT1) receptor and partially activate peroxisome proliferator-activated receptor γ (PPARγ) simultaneously. Through the modification to telmisartan, researchers designed and obtained imidazo-\pyridine derivatives with the IC50s of 0.49~94.1 nM against AT1 and EC50s of 20~3640 nM towards PPARγ partial activation. For minutely inquiring the interaction modes with the relevant receptor and analyzing the structure-activity relationships, molecular docking and 3D-QSAR (Quantitative structure-activity relationships) analysis of these imidazo-\pyridines on dual targets were conducted in this work...
April 11, 2017: Oncotarget
https://www.readbyqxmd.com/read/28445369/a-systematic-review-of-different-implants-and-approaches-for-proximal-interphalangeal-joint-arthroplasty
#2
Michiro Yamamoto, Sunitha Malay, Yuki Fujihara, Lin Zhong, Kevin C Chung
BACKGROUND: Outcomes after implant arthroplasty for primary degenerative and posttraumatic osteoarthritis of the proximal interphalangeal joint were different according to the implant design and surgical approach. The purpose of this systematic review was to evaluate outcomes of various types of implant arthroplasty for proximal interphalangeal joint osteoarthritis, with an emphasis on different surgical approaches. METHODS: The authors searched all available literature in the PubMed and EMBASE databases for articles reporting on outcomes of implant arthroplasty for proximal interphalangeal joint osteoarthritis...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28445368/correcting-concavity-of-rabbit-auricular-cartilage-comparison-of-single-scoring-incisions-with-butyl-cyanoacrylate-aided-techniques
#3
Yalcin Yontar, İrfan Özyazgan
BACKGROUND: The authors present the results of an experimental study in which four different techniques were used for the correction of concave rabbit auricular cartilage. METHODS: Sixteen New Zealand adult male rabbits were used in the study. Butyl cyanoacrylate-aided cartilage graft fixation and butyl cyanoacrylate-aided bone graft fixation and scoring technique, alone or combined with butyl cyanoacrylate application, were performed to correct the concavity of rabbit auricular cartilage...
May 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28444193/quantitative-assessment-of-timing-efficiency-specificity-and-genetic-mosaicism-of-crispr-cas9-mediated-gene-editing-of-hemoglobin-beta-gene-in-rhesus-monkey-embryos
#4
Uros Midic, Pei-Hsuan Hung, Kailey A Vincent, Benjamin Goheen, Patrick G Schupp, Diane D Chen, Daniel E Bauer, Catherine A VandeVoort, Keith E Latham
Gene editing technologies offer new options for developing novel biomedical research models and for gene and stem cell based therapies. However, applications in many species demand high efficiencies, specificity, and a thorough understanding of likely editing outcomes. To date, overall efficiencies, rates of off-targeting, and degree of genetic mosaicism have not been well-characterized for most species, limiting our ability to optimize methods. As a model gene for measuring these parameters of CRISPR/Cas9 application in a primate species (rhesus monkey), we selected the β-hemoglobin gene (HBB), which also has high relevance to potential application of gene editing and stem-cell technologies for treating human disease...
April 21, 2017: Human Molecular Genetics
https://www.readbyqxmd.com/read/28443704/independent-variables-affecting-outcome-of-carpal-tunnel-release-surgery
#5
Jacqueline D Watchmaker, Greg P Watchmaker
BACKGROUND: In making the decision to undergo carpal tunnel release (CTR), patients may consider probability of symptom resolution. Prior studies have examined potential preoperative variables that might influence the postoperative outcome. Few studies, however, contain the sample size, prospective design, and high participant completion rate to provide solid data from which to counsel patients. The purpose of this study was to prospectively evaluate factors that have been implicated or dismissed in past studies as sources of outcome variation following CTR surgery and provide patient-relatable facts that the surgeon might use in preoperative patient counseling...
April 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28443656/acyl-fluorides-fast-efficient-and-versatile-lysine-based-protein-conjugation-via-plug-and-play-strategy
#6
Igor Dovgan, Sylvain Ursuegui, Stéphane Erb, Chloé Michel, Sergii Kolodych, Sarah Cianférani, Alain Wagner
We report a plug-and-play strategy for the preparation of functionally enhanced antibodies with a defined average degree of conjugation (DoC). The first stage (plug) allows the controllable and efficient installation of azide groups on lysine residues of a native antibody using 4-azidobenzoyl fluoride. The second step (play) allows for versatile antibody functionalization with a single payload or combination of payloads, such as a toxin, a fluorophore, or an oligonucleotide, via copper-free strain-promoted azide-alkyne cycloaddition (SPAAC)...
April 26, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28443510/a-combination-of-egg-yolk-igy-and-phosvitin-inhibits-the-growth-of-enterotoxigenic-escherichia-coli-k88-and-k99
#7
Naiyana Gujral, Heejoo Yoo, Fatemeh Bamdad, Kwang Yong Lee, Joo-Won Suh, Hoon Sunwoo
BACKGROUND: Enterotoxigenic Escherichia coli (ETEC) is the main cause of fatal diarrhea in piglets during the first week of life and over the time of weaning. Pathogenesis of ETEC-causing diarrhea involves intestinal colonization mediated by fimbriae. Although, both IgY and egg yolk phosvitin (PV) possess antimicrobial activity, their combined activity has not been explored. A combination of IgY specific for ETEC and metal-chelating PV may show synergistic effect in reducing the growth of ETEC by inhibiting bacterial proliferation and stipulating protection against ETEC infection...
April 25, 2017: Current Pharmaceutical Biotechnology
https://www.readbyqxmd.com/read/28443163/using-magnetic-resonance-myelography-to-improve-interobserver-agreement-in-the-evaluation-of-lumbar-spinal-canal-stenosis-and-root-compression
#8
Haider Najim Al-Tameemi, Sattar Al-Essawi, Mahmud Shukri, Farah Kasim Naji
STUDY DESIGN: Cross-sectional retrospective study designed to assess interobserver agreement. PURPOSE: To investigate if interobserver agreement using magnetic resonance imaging (MRI) in the evaluation of lumbar spinal canal stenosis and root compression can be improved upon combination with magnetic resonance myelography (MRM). OVERVIEW OF LITERATURE: The interpretation of lumbar spinal MRI, which is the imaging modality of choice, often has a significant influence on the diagnosis and treatment of low back pain...
April 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28442493/characteristics-and-outcomes-of-canadian-md-phd-program-graduates-a-cross-sectional-survey
#9
Michael A Skinnider, Jordan W Squair, David D W Twa, Jennifer X Ji, Alexandra Kuzyk, Xin Wang, Patrick E Steadman, Kirill Zaslavsky, Ayan K Dey, Mark J Eisenberg, Ève-Reine Gagné, Kent T HayGlass, James F Lewis, Peter J Margetts, D Alan Underhill, Norman D Rosenblum, Lynn A Raymond
BACKGROUND: Combined MD/PhD programs provide a structured path for physician-scientist training, but assessment of their success within Canada is limited by a lack of quantitative data. We collected outcomes data for graduates of Canadian MD/PhD programs. METHODS: We developed and implemented a Web-based survey consisting of 41 questions designed to collect outcomes data for Canadian MD/PhD program alumni from 8 Canadian universities who had graduated before September 2015...
April 25, 2017: CMAJ Open
https://www.readbyqxmd.com/read/28441673/gateways-to-the-laboratory-how-an-md-phd-program-increased-the-number-of-minority-physician-scientists
#10
Ruth Gotian, Jemella C Raymore, Shauna-Kay Rhooms, Laura Liberman, Olaf S Andersen
Traditional underrepresented minority (URM) groups (African Americans, Hispanic Americans, Native Americans) remain underrepresented among physician-scientists. To address the dearth of URM physician-scientists, in 1993 the Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program developed a pipeline program, Gateways to the Laboratory (Gateways), which focuses on increasing the breadth and depth of the URM physician-scientist pipeline by offering an all-encompassing summer research training program which mirrors the life of a physician-scientist...
May 2017: Academic Medicine: Journal of the Association of American Medical Colleges
https://www.readbyqxmd.com/read/28441015/-bottom-up-construction-of-multi-polyprodrug-arm-hyperbranched-amphiphiles-for-cancer-therapy
#11
Pei Sun, Dong Chen, Hongping Deng, Nan Wang, Ping Huang, Xin Jin, Xinyuan Zhu
Despite of great advantages of polymer-drug conjugates (PDC) in cancer therapy, the controlling of drug loading site and degree via a facile approach remains a great challenge. Herein, combination the controllability of the "bottom-up" strategy and the stability of multi-arm hyperbranched amphiphiles, we have developed a novel multi-polyprodrug-arm hyperbranched amphiphiles (H40-star-(PHCPTMA-b-PMPC), hPCM) via reversible addition-fragmentation chain transfer (RAFT) polymerization for cancer therapy. The hPCM was constructed via two-step polymerization of an acid-labile prodrug monomer and a zwitterionic monomer, respectively...
April 25, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/28440802/genetic-hurdles-limit-the-arms-race-between-prochlorococcus-and-the-t7-like-podoviruses-infecting-them
#12
Daniel A Schwartz, Debbie Lindell
Phages and hosts coexist in nature with a high degree of population diversity. This is often explained through coevolutionary models, such as the arms race or density-dependent fluctuating selection, which differ in assumptions regarding the emergence of phage mutants that overcome host resistance. Previously, resistance in the abundant marine cyanobacterium, Prochlorococcus, was found to occur frequently. However, little is known about the ability of phages to overcome this resistance. Here we report that, in some cases, T7-like cyanophage mutants emerge to infect resistant Prochlorococcus strains...
April 25, 2017: ISME Journal
https://www.readbyqxmd.com/read/28440389/thermal-behaviour-of-lixmeo2-me-co-or-ni-mn-co-cathode-materials
#13
Petronela Gotcu, Wilhelm Pfleging, Peter Smyrek, Hans J Seifert
Thermal behaviour and thermophysical properties of two typical cathodes for lithium-ion batteries were studied in dependence of temperature. The cathode materials are composite thick films containing a mixture of 90 wt% LiMeO2 active material (with Me = Co or Me = Ni + Mn + Co, respectively) and additives (binder and carbon black), deposited on aluminium current collector foils. The thermal conductivity of each cathode type and their corresponding composite layers were determined up to 573 K from the measured thermal diffusivity, the specific heat capacity and the estimated density based on metallographic methods and structural investigations...
April 25, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28440270/refined-genetic-maps-reveal-sexual-dimorphism-in-human-meiotic-recombination-at-multiple-scales
#14
Claude Bhérer, Christopher L Campbell, Adam Auton
In humans, males have lower recombination rates than females over the majority of the genome, but the opposite is usually true near the telomeres. These broad-scale differences have been known for decades, yet little is known about differences at the fine scale. By combining data sets, we have collected recombination events from over 100,000 meioses and have constructed sex-specific genetic maps at a previously unachievable resolution. Here we show that, although a substantial fraction of the genome shows some degree of sexually dimorphic recombination, the vast majority of hotspots are shared between the sexes, with only a small number of putative sex-specific hotspots...
April 25, 2017: Nature Communications
https://www.readbyqxmd.com/read/28439941/serological-biomarkers-detect-active-joint-destruction-and-inflammation-in-patients-with-haemophilic-arthropathy
#15
B Hua, E H N Olsen, S Sun, C N Gudme, L Wang, B Vandahl, K Roepstorff, M Kjelgaard-Hansen, B B Sørensen, Y Zhao, M A Karsdal, T Manon-Jensen
INTRODUCTION: Progressive arthropathy caused by recurrent joint bleeds is a severe complication in haemophilia. AIM: We investigated whether biomarkers of cartilage and bone degradation, and inflammation were altered in haemophilia patients and whether these biomarkers could identify haemophilia patients with arthropathy. METHODS: Serum from 35 haemophilia patients with varying degrees of arthropathy and 43 age- and gender-matched control subjects were analysed...
April 24, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28439432/posterior-interosseous-nerve-palsy-caused-by-a-ganglion-conservative-treatment-with-ultrasound-guided-needle-aspiration
#16
Yasuhiro Seki
Posterior interosseous nerve palsy caused by a ganglion is not common and most previous patients were treated with excisional surgery. We treated a case conservatively with needle aspiration using ultrasonography, after a nerve conduction study. A 77-year-old man presented with impaired active finger extension of the left metacarpophalangeal joints. The nerve conduction study revealed conduction block of the left radial nerve near the elbow. Ultrasonography demonstrated a hypoechoic mass anterior to the radial neck compressing the posterior interosseous nerve...
March 2017: Journal of Ultrasonography
https://www.readbyqxmd.com/read/28438969/intracellular-in-vivo-dynamics-of-thalamocortical-synapses-in-visual-cortex
#17
Madineh Sedigh-Sarvestani, Leif Vigeland, Ivan Fernandez-Lamo, Morgan Taylor, Larry A Palmer, Diego Contreras
Seminal studies of the thalamocortical (TC) circuit in the visual system of the cat have been central to our understanding of sensory encoding. However, TC synaptic properties remain poorly understood. We used paired recordings, in the lateral geniculate nucleus (LGN) and primary visual cortex (V1), to provide the first in vivo characterization of sensory-driven TC potentials in V1. The amplitudes of EPSPs we characterized were smaller than those previously reported in vitro. Consistent with prior findings, connected LGN-V1 pairs were only found when their receptive fields (RFs) overlapped, and the probability of connection increased steeply with degree of RF overlap and response similarity...
April 24, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/28438123/small-rna-sequencing-reveals-a-role-for-sugarcane-mirnas-and-their-targets-in-response-to-sporisorium-scitamineum-infection
#18
Yachun Su, Yuye Zhang, Ning Huang, Feng Liu, Weihua Su, Liping Xu, Waqar Ahmad, Qibin Wu, Jinlong Guo, Youxiong Que
BACKGROUND: Sugarcane smut caused by Sporisorium scitamineum leads to a significant reduction in cane yield and sucrose content. MicroRNAs (miRNAs) play an important role in regulating plant responses to biotic stress. The present study was the first to use two sugarcane genotypes, YA05-179 (smut-resistant) and ROC22 (smut-susceptible), to identify differentially expressed miRNAs in sugarcane challenged with S. scitamineum by using high-throughput sequencing. RESULTS: The predicted target gene number corresponding to known differentially expressed miRNAs in YA05-179 was less than that in ROC22, however most of them were in common...
April 24, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28437992/a-large-airborne-survey-of-earth-s-visible-infrared-spectral-dimensionality
#19
David R Thompson, Joseph W Boardman, Michael L Eastwood, Robert O Green
The intrinsic spectral dimensionality indicates the observable degrees of freedom in Earth's solar-reflected light field, quantifying the diversity of spectral content accessible by visible and infrared remote sensing. The solar-reflected regime spans the 0.38 - 2.5 μm interval, and is captured by a wide range of current and planned instruments on both airborne and orbital platforms. To date there has been no systematic study of its spectral dimensionality as a function of space, time, and land cover. Here we report a multi-site, multi-year statistical survey by NASA's "Classic" Airborne Visible Near InfraRed Spectrometer (AVIRIS-C)...
April 17, 2017: Optics Express
https://www.readbyqxmd.com/read/28437502/combined-anterior-posterior-decompression-and-fusion-for-cervical-spondylotic-myelopathy
#20
Richard Bram, Susan Fiore, John J Labiak, Raphael P Davis
We conducted a study to evaluate the operative details, perioperative complications, and short-term outcomes associated with combined anterior-posterior decompression and fusion (CAPDF) for treating cervical spondylotic myelopathy (CSM). We retrospectively reviewed the charts of 21 patients who underwent CAPDF at our institution. Pertinent information, including demographics, surgery indication, perioperative complications, operative time, levels fused (and number of levels fused) anteriorly and posteriorly, estimated blood loss, and length of stay, was gathered...
March 2017: American Journal of Orthopedics
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