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https://www.readbyqxmd.com/read/28108153/parameters-from-the-complete-phonatory-range-of-an-excised-rabbit-larynx
#1
Randal D Mills, Keith Dodd, Alex Ablavsky, Erin Devine, Jack J Jiang
OBJECTIVE: This study aims to collect data throughout the complete phonatory range using rabbit larynges. STUDY DESIGN: This is a methodological excised rabbit larynx study. METHODS: Seven rabbit larynges were dissected and mounted on a modified excised laryngeal apparatus. Phonation was initiated at phonation threshold pressure (PTP) and airflow was increased by consistent increments until phonation instability pressure (PIP) was reached...
January 17, 2017: Journal of Voice: Official Journal of the Voice Foundation
https://www.readbyqxmd.com/read/28107930/a-chemiluminescent-aptasensor-based-on-rolling-circle-amplification-and-co-2-n-aminobutyl-n-ethylisoluminol-functional-flowerlike-gold-nanoparticles-for-salmonella-typhimurium-detection
#2
Liling Hao, Huajie Gu, Nuo Duan, Shijia Wu, Xiaoyuan Ma, Yu Xia, Haitao Wang, Zhouping Wang
A sensitive steady-state chemiluminescent aptasensor based on rolling circle amplification (RCA) was fabricated for the detection of Salmonella typhimurium. The sensor utilized aptamer modified Fe3O4 magnetic nanoparticles (MNPs) as capture probes, aptamer as recognition molecules, and Co(2+) enhanced N‑(aminobutyl)-N-(ethylisoluminol) (ABEI) functional flowerlike gold nanoparticles (AuNFs) and complementary strand (cDNA) complex (Co(2+)/ABEI-AuNFs-cDNA) as signal probes. And P-Iodophenol (PIP) was also added to form a typical ABEI- AuNFs-PIP-H2O2 steady-state CL system...
March 1, 2017: Talanta
https://www.readbyqxmd.com/read/28104569/interaction-of-octahedral-ruthenium-ii-polypyridyl-complex-ru-bpy-2-pip-2-with-poly-u-%C3%A2-poly-a-poly-u-triplex-increasing-third-strand-stabilization-of-the-triplex-without-affecting-the-stability-of-the-duplex
#3
Zhiyuan Zhu, Mengna Peng, Jingwen Zhang, Lifeng Tan
Triple-helical RNA are of interest because of possible biological roles as well as the potential therapeutic uses of these structures, while the stability of triplexes is usually weaker than that of the Watson-Crick base pairing duplex strand due to the electrostatic repulsion between three polyanionic strands. Therefore, how to increase the stability of the specific sequences of triplexes are of importance. In this paper the binding of a Ru(II) complex, [Ru(bpy)2(PIP)](2+) (bpy=2.2'-bipyridine, PIP=2-phenyl-1H-imidazo[4,5-f]- [1,10]-phenanthroline), with poly(U)·poly(A)*poly(U) triplex has been investigated by spectrophotometry, spectrofluorometry, viscosimetry and circular dichroism...
January 4, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28102507/-44-sc-psma-617-for-radiotheragnostics-in-tandem-with-177-lu-psma-617-preclinical-investigations-in-comparison-with-68-ga-psma-11-and-68-ga-psma-617
#4
Christoph A Umbricht, Martina Benešová, Raffaella M Schmid, Andreas Türler, Roger Schibli, Nicholas P van der Meulen, Cristina Müller
BACKGROUND: The targeting of the prostate-specific membrane antigen (PSMA) is of particular interest for radiotheragnostic purposes of prostate cancer. Radiolabeled PSMA-617, a 1,4,7,10-tetraazacyclododecane-N,N',N'',N'''-tetraacetic acid (DOTA)-functionalized PSMA ligand, revealed favorable kinetics with high tumor uptake, enabling its successful application for PET imaging ((68)Ga) and radionuclide therapy ((177)Lu) in the clinics. In this study, PSMA-617 was labeled with cyclotron-produced (44)Sc (T 1/2 = 4...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28096427/influence-of-fatiguing-noise-on-auditory-evoked-responses-to-stimuli-of-various-levels-in-a-beluga-whale-delphinapterus-leucas
#5
Vladimir V Popov, Evgeniya V Sysueva, Dmitry I Nechaev, Viatcheslav V Rozhnov, Alexander Ya Supin
The negative impact of man-made noise on the hearing of odontocetes attracts considerable recent attention. Mostly permanent or temporary reductions in sensitivity are known as permanent or temporary threshold shift (PTS or TTS, respectively) were investigated. In the present study, the effects of a fatiguing sound on the hearing of a beluga whale Delphinapterus leucas within a wide range of levels of test signals was investigated. The fatiguing noise was half-octave band-limited noise centered at 32 kHz. Post-exposure effects of this noise on the evoked responses to test stimuli (rhythmic pip trains with a 45-kHz center frequency) at various levels (from threshold to 60 dB above threshold) was measured...
January 17, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28094757/which-joints-and-why-do-rheumatologists-scan-in-rheumatoid-arthritis-by-ultrasonography-a-real-life-experience
#6
Sibel Zehra Aydin, Salih Pay, Nevsun Inanc, Sevil Kamali, Omer Karadag, Paul Emery, Maria-Antonietta D'Agostino
OBJECTIVES: Ultrasonography (US) has been demonstrated to improve assessment of synovitis and disease activity in rheumatoid arthritis (RA). However, the utility and feasibility of US in RA in clinical practice in real life is not known. We aimed to investigate: i) the indications for performing US in RA in daily practice; and ii) whether the number of scanned joints varies according to the purpose. METHODS: Consecutive patients who had a US scan either for diagnosis or follow-up for RA from 5 centres were recruited...
January 15, 2017: Clinical and Experimental Rheumatology
https://www.readbyqxmd.com/read/28092439/molecular-details-of-the-ph-domain-of-acap1-bar-ph-protein-binding-to-pip-containing-membrane
#7
Chun Chan, Lanyuan Lu, Fei Sun, Jun Fan
ACAP1 proteins were previously reported to specifically bind PIP2-containing cell membranes and form well-structured protein lattices in order to conduct membrane tubulation. We carried out molecular dynamics simulations to characterize orientation of the PH domains with respect to the BAR domains inside the protein dimer. Followed by molecular dynamics simulations, we present a comprehensive orientation analysis of PH domain under different states including unbound and bound with lipids. We have examined two binding pockets on the PH domain and present PMF profiles of the two pockets to account for their preference to PIP2 lipids...
January 16, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28078872/molecular-characterization-and-antibiotic-resistance-of-salmonella-serovars-isolated-in-the-apulia-region-of-italy
#8
R Mirgaldi, A Ballini, A M Dionisi, I Luzzi, G Dipalma, F Inchingolo, D De Vito
During the period January 2013-December 2015, 175 cases of human salmonellosis were reported in the Apulia Region of Italy. The aim of this study was to characterize salmonella strains from the standpoints of serovars prevalence, antimicrobial resistance and clonal origin. The serological typing was performed by agglutination against antisera followed by a multiplex polymerase chain reaction (m-PCR). The obtained results were analyzed following the Kauffmann-White scheme. Susceptibility to antimicrobial agents was tested using the disk diffusion method on Muller-Hinton agar plates...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28076457/removal-of-calcium-hydroxide-from-weine-type-ii-systems-using-photon-induced-photoacoustic-streaming-passive-ultrasonic-and-needle-irrigation-a-microcomputed-tomography-study
#9
Adam Lloyd, Geraldine Navarrete, Melissa Andreia Marchesan, David Clement
Objective: This study compared the effectiveness of Er:YAG laser-activated irrigation (PIPS), passive ultrasonic irrigation (PUI) with EndoUltra and standard needle irrigation (SNI) in the removal of calcium hydroxide [Ca(OH)2] from the mesial roots of Weine Type II mandibular molars. Material and Methods: Thirty mandibular molars were screened by µCT for the presence of mesial roots with complex intra-canal anatomy and a common apical foramen. The teeth were enlarged to a standardized 25/...
November 2016: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/28075591/discovery-of-potent-cyclophilin-inhibitors-based-on-structural-simplification-of-sanglifehrin-a
#10
Victoria A Steadman, Simon B Pettit, Karine G Poullennec, Linos Lazarides, Andrew J Keats, David K Dean, Steven J Stanway, Carol A Austin, Jonathan A Sanvoisin, Gregory M Watt, Hans G Fliri, Albert C Liclican, Debi Jin, Melanie H Wong, Stephanie A Leavitt, Yu-Jen Lee, Yang Tian, Christian R Frey, Todd C Appleby, Uli Schmitz, Petr Jansa, Richard L Mackman, Brian Edward Schultz
Cyclophilin inhibition has been a target for the treatment of hepatitis C and other diseases, but the generation of potent, drug-like molecules through chemical synthesis has been challenging. In this study, a set of macrocyclic cyclophilin inhibitors was synthesized based on the core structure of the natural product sanglifehrin A. Initial compound optimization identified the valine-m-tyrosine-piperazic acid tripeptide (Val-m-Tyr-Pip) in the sanglifehrin core, stereocenters at C14 and C15, and the hydroxyl group of the m-tyrosine (m-Tyr) residue as key contributors to compound potency...
January 11, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28073635/pcna-dependent-cellular-activities-tolerate-dramatic-perturbations-in-pcna-client-interactions
#11
Rosemary H C Wilson, Antonio J Biasutto, Lihao Wang, Roman Fischer, Emma L Baple, Andrew H Crosby, Erika J Mancini, Catherine M Green
Proliferating cell nuclear antigen (PCNA) is an essential cofactor for DNA replication and repair, recruiting multiple proteins to their sites of action. We examined the effects of the PCNA(S228I) mutation that causes PCNA-associated DNA repair disorder (PARD). Cells from individuals affected by PARD are sensitive to the PCNA inhibitors T3 and T2AA, showing that the S228I mutation has consequences for undamaged cells. Analysis of the binding between PCNA and PCNA-interacting proteins (PIPs) shows that the S228I change dramatically impairs the majority of these interactions, including that of Cdt1, DNMT1, PolD3(p66) and PolD4(p12)...
December 31, 2016: DNA Repair
https://www.readbyqxmd.com/read/28064167/potentially-inappropriate-prescribing-to-older-patients-in-primary-care-in-the-netherlands-a-retrospective-longitudinal-study
#12
Linette Bruin-Huisman, Ameen Abu-Hanna, Henk C P M van Weert, Erna Beers
BACKGROUND: potentially inappropriate prescribing (PIP) is associated with adverse health effects in older patients. PIP comprises prescription of potentially inappropriate medications (PIMs) and potential prescribing omissions (PPOs). OBJECTIVE: to estimate the prevalence of PIMs and PPOs among older patients in primary care. DESIGN: retrospective longitudinal study. SETTING: routinely collected data of 182,000 patients of 49 general practitioners (GPs) gathered in the GPs' database of the Academic Medical Center of Amsterdam, the Netherlands...
January 6, 2017: Age and Ageing
https://www.readbyqxmd.com/read/28063300/a-psma-targeted-theranostic-agent-for-photodynamic-therapy
#13
Ying Chen, Samit Chatterjee, Ala Lisok, Il Minn, Mrudula Pullambhatla, Bryan Wharram, Yuchuan Wang, Jiefu Jin, Zaver M Bhujwalla, Sridhar Nimmagadda, Ronnie C Mease, Martin G Pomper
Prostate-specific membrane antigen (PSMA) is over-expressed in the epithelium of prostate cancer and in the neovasculature of many non-prostate solid tumors. PSMA has been increasingly used as a target for cancer imaging and therapy. Here we describe a low-molecular-weight theranostic photosensitizer, YC-9, for PSMA-targeted optical imaging and photodynamic therapy (PDT). YC-9 was synthesized by conjugating IRDye700DX N-hydroxysuccinimide (NHS) ester with a PSMA targeting Lys-Glu urea through a lysine-suberate linker in suitable yield...
December 18, 2016: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/28062351/training-the-workforce-description-of-a-longitudinal-interdisciplinary-education-and-mentoring-program-in-palliative-care
#14
Stacie Levine, Sean O'Mahony, Aliza Baron, Aziz Ansari, Catherine Deamant, Joel Frader, Ileana Leyva, Michael Marschke, Michael Preodor
CONTEXT: The rapid increase in demand for palliative care (PC) services has led to concerns regarding workforce shortages and threats to the resiliency of PC teams. OBJECTIVES: To describe the development, implementation, and evaluation of a regional interdisciplinary training program in PC. METHODS: Thirty nurse and physician "fellows" representing 22 health systems across the Chicago region participated in a two-year PC training program...
January 3, 2017: Journal of Pain and Symptom Management
https://www.readbyqxmd.com/read/28061745/large-scale-transcriptome-comparison-of-sunflower-genes-responsive-to-verticillium-dahliae
#15
Shuchun Guo, Yongchun Zuo, Yanfang Zhang, Chengyan Wu, Wenxia Su, Wen Jin, Haifeng Yu, Yulin An, Qianzhong Li
BACKGROUND: Sunflower Verticillium wilt (SVW) is a vascular disease caused by root infection with Verticillium dahliae (V. dahlia). It is a serious threat to the yield and quality of sunflower. However, chemical and agronomic measures for controlling this disease are not effective. The selection of more resistant genotypes is a desirable strategy to reduce contamination. A deeper knowledge of the molecular mechanisms and genetic basis underlying sunflower Verticillium wilt is necessary to accelerate breeding progress...
January 6, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28060031/attitudes-of-nursing-students-about-pressure-injury-prevention
#16
Layla J Garrigues, Juliana C Cartwright, Donna Z Bliss
PURPOSE: The objective of this study was to examine the attitudes of baccalaureate nursing students toward their role in pressure injury prevention (PIP) and describe how clinical experiences influence their attitudes. Understanding students' attitudes and experiences related to PIP may facilitate development of evidence-based interventions for PIP by nurses. DESIGN: Qualitative exploratory descriptive design. SETTING AND SUBJECTS: Participants were 16 senior nursing students enrolled in a prelicensure baccalaureate nursing program in an accredited school of nursing...
January 3, 2017: Journal of Wound, Ostomy, and Continence Nursing
https://www.readbyqxmd.com/read/28056042/effect-of-the-level-of-anesthesia-on-the-auditory-brainstem-response-in-the-emei-music-frog-babina-daunchina
#17
Jianguo Cui, Bicheng Zhu, Guangzhan Fang, Ed Smith, Steven E Brauth, Yezhong Tang
Anesthesia is known to affect the auditory brainstem response (ABR) in mice, rats, birds and lizards. The present study investigated how the level of anesthesia affects ABR recordings in an amphibian species, Babina daunchina. To do this, we compared ABRs evoked by tone pip stimuli recorded from 35 frogs when Tricaine methane sulphonate (MS-222) anesthetic immersion times varied from 0, 5 and 10 minutes after anesthesia induction at sound frequencies between 0.5 and 6 kHz. ABR thresholds increased significantly with immersion time across the 0...
2017: PloS One
https://www.readbyqxmd.com/read/28051996/full-preclinical-validation-of-the-123i-labeled-anti-psma-antibody-fragment-scfvd2b-for-prostate-cancer-imaging
#18
Barbara Frigerio, Gerben Franssen, Elena Luison, Alessandro Satta, Ettore Seregni, Marco Colombatti, Giulio Fracasso, Riccardo Valdagni, Delia Mezzanzanica, Otto Boerman, Silvana Canevari, Mariangela Figini
PURPOSE: In the context of prostate cancer (PCa) imaging, the aim of this study was to optimize (in vitro) the specificity and assess preclinically (in vivo) the tumor targeting properties of the 123I-scFvD2B antibody specific for prostate-specific membrane antigen (PSMA). EXPERIMENTAL DESIGN: The 123I-labeling conditions of the antibody fragment scFvD2B, produced in an eukaryotic system under GMP-compliant conditions, were optimized and assessed for purity and immunoreactivity...
December 30, 2016: Oncotarget
https://www.readbyqxmd.com/read/28051989/minute-ventilation-limitations-of-two-field-transport-ventilators
#19
Dale F Szpisjak, Gregory Horn, Samuel Shalov, Alvin Angelo Abes, Lauren Van Decar
Knowledge of transport ventilator performance impacts patient safety. This study compared minute ventilation (VE) of the MOVES and Uni-Vent 731 when ventilating the VentAid Training Test Lung with compliance (C) ranging from 0.02 to 0.10 L/cm H2O and three different airway resistances (R) (none, Rp5, or Rp20). Tidal volume (VT) was 800 ± 25 mL. Respiratory rate was increased to ventilator's maximum or until auto-PEEP > 5 cm H2O. Respiratory parameters were recorded with the RSS 100HR Research Pneumotach...
January 2017: Military Medicine
https://www.readbyqxmd.com/read/28051941/thyroid-hormones-reduce-incubation-period-without-developmental-or-metabolic-costs-in-murray-river-short-necked-turtles-emydura-macquarii
#20
Jessica K McGlashan, Michael B Thompson, James U Van Dyke, Ricky-John Spencer
Metabolic processes are affected by both temperature and thyroid hormones in ectothermic vertebrates. Temperature is the major determinant of incubation length in oviparous vertebrates, but turtles can also alter developmental rate independent of temperature. Temperature gradients within natural nests cause different developmental rates of turtle embryos within nests. Despite temperature-induced reductions in developmental rate, cooler-incubated neonates often hatch synchronously with warmer siblings via metabolic compensation...
January 2017: Physiological and Biochemical Zoology: PBZ
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