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https://www.readbyqxmd.com/read/28821183/improvement-of-the-threespine-stickleback-genome-using-a-hi-c-based-proximity-guided-assembly
#1
Catherine L Peichel, Shawn T Sullivan, Ivan Liachko, Michael A White
Scaffolding genomes into complete chromosome assemblies remains challenging even with the rapidly increasing sequence coverage generated by current next-generation sequence technologies. Even with scaffolding information, many genome assemblies remain incomplete. The genome of the threespine stickleback (Gasterosteus aculeatus), a fish model system in evolutionary genetics and genomics, is not completely assembled despite scaffolding with high-density linkage maps. Here, we first test the ability of a Hi-C based proximity-guided assembly (PGA) to perform a de novo genome assembly from relatively short contigs...
September 1, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28821179/pungency-evaluation-of-hydroxyl-sanshool-compounds-after-dissolution-in-taste-carriers-per-time-related-characteristics
#2
Lulu Zhang, Bolin Shi, Houyin Wang, Lei Zhao, Zhongxiu Chen
This study was conducted to investigate the sensory characteristics and temporal migration of hydroxyl-sanshool compounds at slight and moderate concentrations after dissolution in ethanol-water, saccharose, NaCl, and MSG via 2-AFC, time intensity (TI) and temporal dominance of sensations (TDS) methods. The pungency detection threshold (DT) was suppressed in saccharose while NaCl and MSG solutions showed no effect on pungency DT. The area under the curve (AUC) of pungency increased in NaCl and MSG solutions and decreased significantly in saccharose solution...
September 1, 2017: Chemical Senses
https://www.readbyqxmd.com/read/28821153/combination-of-microsized-mineral-particles-and-rosin-as-a-basis-for-converting-cellulosic-fibers-into-sticky-superhydrophobic-paper
#3
Xiaoyan Yu, Peiwen Bian, Yang Xue, Xueren Qian, Haipeng Yu, Wenshuai Chen, Xiaohai Hu, Peng Wang, Dong Wu, Qinghui Duan, Limei Li, Jing Shen, Yonghao Ni
The unique features of cellulosic paper including flexibility, biodegradability, and low cost enables it as a versatile, sustainable biomaterial for promising applications. In the paper industry, microsized mineral particles are widely used in the production of printing/writing paper grades, while rosin derived from trees is the earliest internal sizing agent for paper hydrophobication. On the basis of existing commercial practices associated with the use of mineral particles and rosin in paper production, we present a process concept of converting cellulosic fibers (paper-grade pulp) into "sticky" superhydrophobic paper involving the use of microsized mineral particles and rosin (a tree-derived natural product, mainly a mixture of resin acids, especially abietic acid with chemical formula of C19H29COOH)...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821132/the-effect-of-%C3%AE-cyclodextrin-on-poly-pseudo-rotaxane-nanoparticles-self-assembled-by-protoporphyrin-modified-poly-ethylene-glycol-for-anticancer-drug-delivery
#4
Taotao Xu, Junhua Li, Jun Cao, Wenxia Gao, Li Li, Bin He
Poly(pseudo)rotaxane (PPR) nanoparticles was facilely prepared using poly(ethylene glycol) (PEG) modified with protoporphyrin (PpIX) and α-cyclodextrin (α-CD) via host-guest interaction, the effect of α-CD number on the nanoparticle properties was investigated. The PEG with protoporphyrin (PEG-PpIX) end capping was synthesized via coupling reaction and the poly(pseudo)rotaxane nanoparticles with different amount of α-CD were fabricated by host-guest interaction between mPEG-PpIX and α-CDs. The final product was characterized by nuclear magnetic spectrum ((1)H NMR), X-ray diffraction (XRD), atomic force microscope (AFM) and dynamic light scattering (DLS)...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821131/carboxymethyl-cellulose-production-from-sugarcane-bagasse-with-steam-explosion-pulping-experimental-modeling-and-optimization
#5
Loghman Golbaghi, Mehrdad Khamforoush, Tahmasb Hatami
The sugarcane bagasse was used for producing carboxymethyl cellulose (CMC) and obtaining high-molecular-mass hemicellulose as co-product. To this end, the steam explosion process was employed. It was found that the optimum operating conditions are the temperature of 187.15°C, NaOH/bagasse ratio of 39% (w/w), and retention time (RT) of 10min. Next, the obtained cellulose in the optimized condition was extracted and purified, and it was subsequently converted to CMC according to Williamson etherification technique...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821126/anticoagulant-and-antithrombotic-effects-of-chemically-sulfated-fucogalactan-and-citrus-pectin
#6
Yony Román, Helyn P de Oliveira Barddal, Marcello Iacomini, Guilherme L Sassaki, Thales R Cipriani
Citrus pectin (CP14) from Citrus sinensis, and a fucogalactan (E) and a glucan (G16) from Agaricus bisporus were isolated and structurally characterized. CP14 was constituted by (1→4)-linked α-d-GalpA units, E was composed by a (1→6)-linked α-d-Galp main-chain, partially substituted at O-2 by non-reducing end-units of α-l-Fucp or α-d-Galp, and partially methylated at O-3, whereas G16 was composed of (1→6)-linked β-d-Glcp units. The polysaccharides were sulfated giving rise to CP14S, ESL and G16S...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821077/building-a-fructan-lc-ms-2-library-and-its-application-to-reveal-the-fine-structure-of-cereal-grain-fructans
#7
Joran Verspreet, Anders Holmgaard Hansen, Scott J Harrison, Rudy Vergauwen, Wim Van den Ende, Christophe M Courtin
A liquid chromatography-mass spectrometry (LC-MS) library is presented containing the relative retention times of 28 fructan oligomers and MS(2) spectra of 18 of them. It includes the main representatives of all fructan classes occurring in nature and with a degree of polymerization between three and five. This library enables a rapid and unambiguous detection of these 18 fructan structures in any type of sample without the need for fructan purification or the synthesis of fructan standards. Its wide applicability is demonstrated by the analysis of fructans in a set of cereal flour samples...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28821016/expression-of-interferon-inducible-chemokines-and-sleep-wake-changes-during-early-encephalitis-in-experimental-african-trypanosomiasis
#8
Claudia Laperchia, Chiara Tesoriero, Paul F Seke-Etet, Valentina La Verde, Valeria Colavito, Gigliola Grassi-Zucconi, Jean Rodgers, Paul Montague, Peter G E Kennedy, Marina Bentivoglio
BACKGROUND: Human African trypanosomiasis or sleeping sickness, caused by the parasite Trypanosoma brucei, leads to neuroinflammation and characteristic sleep/wake alterations. The relationship between the onset of these alterations and the development of neuroinflammation is of high translational relevance, but remains unclear. This study investigates the expression of interferon (IFN)-γ and IFN-inducible chemokine genes in the brain, and the levels of CXCL10 in the serum and cerebrospinal fluid prior to and during the encephalitic stage of trypanosome infection, and correlates these with sleep/wake changes in a rat model of the disease...
August 18, 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28820999/absorption-tissue-distribution-metabolism-and-elimination-of-decabrominated-diphenyl-ether-bde-209-in-rats-after-multi-dose-oral-exposure
#9
Xiu-Bo Mi, Lian-Jun Bao, Chen-Chou Wu, Charles S Wong, Eddy Y Zeng
Human and ecological risks of BDE-209 have drawn much attention, particularly with growing e-waste recycling activities in developing countries. To further address the issue of BDE-209 biotransformation, a laboratory-controlled study was conducted. Female Sprague-Dawley rats were dosed orally by gavage at a daily dose of 1 mg kg(-1) body weight for 7 d and a depuration period of 22 d, to characterize absorption, distribution, metabolism, and elimination dynamics of BDE-209 during multi-dose exposures simulating short-term oral exposure of e-waste workers...
August 13, 2017: Chemosphere
https://www.readbyqxmd.com/read/28820934/supramolecular-sensors-for-opiates-and-their-metabolites
#10
Elena G Shcherbakova, Ben Zhang, Samer Gozem, Tsuyoshi Minami, Peter Y Zavalij, Mariia Pushina, Lyle Isaacs, Pavel Anzenbacher
The present work develops a sensing approach for opiates using acyclic cucurbituril (aCBs) sensors comprising four glycouril units terminated on both ends with naphthalene fluorophore walls. The connectivity between the glycourils and the naphthalene rings largely defines the opening size of the cucurbituril cavity and its diameter. The large hydrophobic binding cavity is flexible and is able to adapt to guests of various size and topology. The recognition event between the aCBs and guests results in modification of the fluorescence of the terminal walls, a fluorescence response that can be used to sense the drugs of abuse morphine, heroin and oxycodone as well as their metabolites...
August 18, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28820925/oxidative-stress-related-molecular-biomarker-candidates-for-glaucoma
#11
Gözde Hondur, Emre Göktas, Xiangjun Yang, Lama Al-Aswad, James D Auran, Dana M Blumberg, George A Cioffi, Jeffrey M Liebmann, Leejee H Suh, Danielle Trief, Gülgün Tezel
Purpose: Glaucoma-related molecular biomarkers can improve clinical testing to diagnose the disease early, predict its prognosis, and monitor treatment responses. Based on the evidence of increased oxidative stress in glaucomatous tissues, this study analyzed oxidative stress-related biomarker candidates in blood and aqueous humor samples with or without glaucoma. Methods: The blood and aqueous humor samples collected from carefully selected groups of 96 patients with glaucoma and 64 healthy subjects without glaucoma were included in the study...
August 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28820910/impaired-dendritic-growth-and-positioning-of-cortical-pyramidal-neurons-by-activation-of-aryl-hydrocarbon-receptor-signaling-in-the-developing-mouse
#12
Eiki Kimura, Ken-Ichiro Kubo, Toshihiro Endo, Wenting Ling, Kazunori Nakajima, Masaki Kakeyama, Chiharu Tohyama
The basic helix-loop-helix (bHLH) transcription factors exert multiple functions in mammalian cerebral cortex development. The aryl hydrocarbon receptor (AhR), a member of the bHLH-Per-Arnt-Sim subfamily, is a ligand-activated transcription factor reported to regulate nervous system development in both invertebrates and vertebrates, but the functions that AhR signaling pathway may have for mammalian cerebral cortex development remains elusive. Although the endogenous ligand involved in brain developmental process has not been identified, the environmental pollutant dioxin potently binds AhR and induces abnormalities in higher brain function of laboratory animals...
2017: PloS One
https://www.readbyqxmd.com/read/28820898/perceived-effort-for-motor-control-and-decision-making
#13
Ignasi Cos
How effort is internally quantified and how it influences both movement generation and decisions between potential movements are 2 difficult questions to answer. Physical costs are known to influence motor control and decision-making, yet we lack a general, principled characterization of how the perception of effort operates across tasks and conditions. Morel and colleagues introduce an insightful approach to that end, assessing effort indifference points and presenting a quadratic law between perceived effort and force production...
August 18, 2017: PLoS Biology
https://www.readbyqxmd.com/read/28820836/the-surgeon-s-fist-with-the-thumb-up-to-guide-the-design-and-inset-of-the-osteoseptocutaneous-fibula-flap-in-mandibular-reconstruction
#14
Nidal F Al Deek, Chung-Kan Tsao, Fu-Chan Wei
Successful reconstruction of the oromandibular defect with the osteoseptocutaneous fibula flap necessitates flawless design and inset, an experience-demanding endeavor. Laterality of the fibula flap has been thought to pose a certain challenge to the reconstruction. To address this concern and guide flap design and inset, the authors propsed using the surgeon's fist with the thumb up to replicate key anatomic land marks of the fibula flap: the peroneal vessels and proximal bone end, the posterior crural septum including the septal vessels, the skin, and the lateral surface of the fibula bone...
August 8, 2017: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28820773/self-care-management-in-corrections-perspectives-from-persons-with-an-incarceration-experience
#15
Annette T Maruca, Kimberly Dion, Adrial A Lobelo, Olivia Ampiah-Bonney, Chunfang Chen, Kirk Sanger, Donna Zucker
The purpose of this study was to explore the perceptions and beliefs of what self-care management looks like for a person with an incarceration experience. This is the first phase of a two-phase study. This qualitative study, held in three county jails in Massachusetts, utilized a focus group methodology. The Rediscovery of Self-Care: A Care Intervention for Persons with Incarceration Experience (RSC) model served as the framework for this study. On the basis of a priori constructs from the RSC model, a protocol was established and targeted questions outlined...
July 2017: Journal of Forensic Nursing
https://www.readbyqxmd.com/read/28820700/rapid-detection-of-plasmodium-knowlesi-by-isothermal-recombinase-polymerase-amplification-assay
#16
Meng-Yee Lai, Choo-Huck Ooi, Yee-Ling Lau
In this study, we developed a recombinase polymerase amplification (RPA) assay for specific diagnosis of Plasmodium knowlesi. Genomic DNA was extracted from whole blood samples using a commercial kit. With incubation at 37°C, the samples were successfully amplified within 20 minutes. The end product of RPA was further examined by loading onto agarose gel and a specific band was observed with a size of 128 bp. The RPA assay exhibited high sensitivity with limits of detection down to one copy of the plasmid...
August 14, 2017: American Journal of Tropical Medicine and Hygiene
https://www.readbyqxmd.com/read/28820620/care-providers-integration-of-family-requests-in-end-of-life-communication-understanding-what-to-do-and-why-to-do-it
#17
Paula Hopeck
End-of-life situations are fraught with challenges for patients, family members, and individuals working at the patient's bedside. Care workers must address needs of the patient, as well as his or her distressed family members. This article is an inductive investigation of care workers' (nurses, patient advocates, and clergy) experiences with end-of-life discussions when the family asks to "do everything." Participants also noted resistance to hospice in some of these encounters based on pre-existing connotations of hospice held by the family members...
August 18, 2017: Health Communication
https://www.readbyqxmd.com/read/28820558/young-patient-with-advanced-heart-failure-no-longer-a-candidate-for-heart-transplantation-after-mitraclip%C3%A3-%C3%A2-procedure
#18
Cosmo Godino, Andrea Scotti, Eustachio Agricola, Carlo A Pivato, Mauro Chiarito, Stefano Stella, Massimo Maccherini, Alberto Margonato, Antonio Colombo
In Europe, mitral regurgitation (MR) is the second most common form of valvular heart disease requiring surgical treatment. The case is presented of a 36-year-old woman with end-stage heart failure secondary to chemotherapy-induced cardiotoxicity, complicated by severe MR. She was listed for heart transplantation and underwent percutaneous MitraClip® implantation in order to preclude further clinical deterioration while awaiting a suitable donor. The one-year follow-up showed a strong improvement of symptoms and mostly reverse left ventricular remodelling, with consequent removal from the heart transplantation list...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28820552/-1%C3%A2-3-%C3%AE-d-glucan-assay-in-monitoring-response-to-anti-fungal-therapy-in-fungal-endocarditis
#19
Jihad Slim, Christopher Saling, Maria Szabela, Melinda Brown, Tamara Johnson, Irvin Goldfarb
BACKGROUND: A case is reported of Candida glabrata infective endocarditis (IE) treated without surgical intervention. The study aim was to: (i) briefly discuss the outcomes of other documented cases of fungal IE managed medically with fluconazole; (ii) discuss the (1→3)-β-D-glucan assay and its previously studied role in the diagnosis of invasive fungal infections; and (iii) examine a possible application of the (1→3)-β-D-glucan assay to monitor response to antifungal treatment in patients with Candida endocarditis...
March 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28820549/qishenyiqi-dripping-pill-improves-heart-failure-by-up-regulation-of-%C3%AE-2-adrenergic-receptor-expression
#20
Junfeng Sun, Hua Qian, Xiaoguang Li, Xianling Tang
BACKGROUND: QishenYiqi Dripping Pill (QYDP) is a Chinese herbal medicine that originally was used for the treatment of coronary artery disease. Recently, QYDP was used as a complementary treatment for heart failure (HF) in China. METHODS: An HF rat model was used to clarify the possible therapeutic effects of QYDP on HF. The HF rats were allocated to two groups, HF and HF+QYDP, while normal rats served as a negative control. Cardiac functions were evaluated echocardiographically and hemodynamically...
March 2017: Journal of Heart Valve Disease
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