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https://www.readbyqxmd.com/read/28335351/modified-nanoemulsions-with-iron-oxide-for-magnetic-resonance-imaging
#1
Yongyi Fan, Rui Guo, Xiangyang Shi, Steven Allen, Zhengyi Cao, James R Baker, Su He Wang
A nanoemulsion (NE) is a surfactant-based, oil-in-water, nanoscale, high-energy emulsion with a mean droplet diameter of 400-600 nm. When mixed with antigen and applied nasally, a NE acts as a mucosal adjuvant and induces mucosal immune responses. One possible mechanism for the adjuvant effect of this material is that it augments antigen uptake and distribution to lymphoid tissues, where the immune response is generated. Biocompatible iron oxide nanoparticles have been used as a unique imaging approach to study the dynamics of cells or molecular migration...
November 25, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28258775/a-markov-model-for-planning-and-permitting-offshore-wind-energy-a-case-study-of-radio-tracked-terns-in-the-gulf-of-maine-usa
#2
Alexana Cranmer, Jennifer R Smetzer, Linda Welch, Erin Baker
Quantifying and managing the potential adverse wildlife impacts of offshore wind energy is critical for developing offshore wind energy in a sustainable and timely manner, but poses a significant challenge, particularly for small marine birds that are difficult to monitor. We developed a discrete-time Markov model of seabird movement around a colony site parameterized by automated radio telemetry data from common terns (Sterna hirundo) and Arctic terns (S. paradisaea), and derived impact functions that estimate the probability of collision fatality as a function of the distance and bearing of wind turbines from a colony...
May 15, 2017: Journal of Environmental Management
https://www.readbyqxmd.com/read/28255438/lactate-in-the-brain-an-update-on-its-relevance-to-brain-energy-neurons-glia-and-panic-disorder
#3
REVIEW
Laurel Riske, Rejish K Thomas, Glen B Baker, Serdar M Dursun
Lactate is considered an important metabolite in the human body, but there has been considerable debate about its roles in brain function. Research in recent years has suggested that lactate from astrocytes may be crucial for supporting axonal function, especially during times of high metabolic demands or hypoglycemia. The astrocyte-neuron lactate transfer shuttle system serves a protective function to ensure a supply of substrates for brain metabolism, and oligodendrocytes appear to also influence availability of lactate...
February 2017: Therapeutic Advances in Psychopharmacology
https://www.readbyqxmd.com/read/28244001/relating-clinical-and-electrophysiological-parameters-in-death-determination-in-a-laboratory-model-of-progressive-hypoxemia
#4
Eugene Park, Elaine Liu, Sam D Shemie, Andrew J Baker
BACKGROUND: Death after withdrawal of mechanical ventilation frequently follows the sequence of progressive hypoxemia and hypotension leading to cardiac arrest. Accurate timing of the determination of death is fundamental to trust in controlled donation after circulatory death (cDCD) programs and is generally based on cessation of circulation (pulselessness), brain function (apnea), and the passage of time. If death is understood to be the unresuscitatable loss of brain function, the clinical determination that death following apnea and pulselessness has occurred is largely inferential...
February 27, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28242621/a-farnesylated-coxiella-burnetii-effector-forms-a-multimeric-complex-at-the-mitochondrial-outer-membrane-during-infection
#5
Laura F Fielden, Jennifer H Moffatt, Yilin Kang, Michael James Baker, Chen Ai Khoo, Craig R Roy, Diana Stojanovski, Hayley J Newton
Coxiella burnetii, the causative agent of Q fever, establishes a unique lysosome-derived intracellular niche termed the Coxiella-containing vacuole (CCV). The Dot/Icm type IVB secretion system is essential for biogenesis of the CCV and intracellular replication of Coxiella. Effector proteins, translocated into the host cell through this apparatus, act to modulate host trafficking and signaling processes to facilitate CCV development. Here we investigated the role of CBU0077, a conserved Coxiella effector that had previously been observed to localize to lysosomal membranes...
February 27, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28217743/regulation-of-nitrogen-metabolism-by-gata-zinc-finger-transcription-factors-in-yarrowia-lipolytica
#6
Kyle R Pomraning, Erin L Bredeweg, Scott E Baker
Fungi accumulate lipids in a manner dependent on the quantity and quality of the nitrogen source on which they are growing. In the oleaginous yeast Yarrowia lipolytica, growth on a complex source of nitrogen enables rapid growth and limited accumulation of neutral lipids, while growth on a simple nitrogen source promotes lipid accumulation in large lipid droplets. Here we examined the roles of nitrogen catabolite repression and its regulation by GATA zinc finger transcription factors on lipid metabolism in Y...
January 2017: MSphere
https://www.readbyqxmd.com/read/28161400/memory-b-cells-are-major-targets-for-effective-immunotherapy-in-relapsing-multiple-sclerosis
#7
REVIEW
David Baker, Monica Marta, Gareth Pryce, Gavin Giovannoni, Klaus Schmierer
Although multiple sclerosis (MS) is considered to be a CD4, Th17-mediated autoimmune disease, supportive evidence is perhaps circumstantial, often based on animal studies, and is questioned by the perceived failure of CD4-depleting antibodies to control relapsing MS. Therefore, it was interestingly to find that current MS-treatments, believed to act via T cell inhibition, including: beta-interferons, glatiramer acetate, cytostatic agents, dimethyl fumarate, fingolimod, cladribine, daclizumab, rituximab/ocrelizumab physically, or functionally in the case of natalizumab, also depleted CD19+, CD27+ memory B cells...
February 2017: EBioMedicine
https://www.readbyqxmd.com/read/28079137/x-ray-structure-and-enzymatic-activity-profile-of-a-core-papain-like-protease-of-mers-coronavirus-with-utility-for-structure-based-drug-design
#8
Jozlyn R Clasman, Yahira M Báez-Santos, Robert C Mettelman, Amornrat O'Brien, Susan C Baker, Andrew D Mesecar
Ubiquitin-like domain 2 (Ubl2) is immediately adjacent to the N-terminus of the papain-like protease (PLpro) domain in coronavirus polyproteins, and it may play a critical role in protease regulation and stability as well as in viral infection. However, our recent cellular studies reveal that removing the Ubl2 domain from MERS PLpro has no effect on its ability to process the viral polyprotein or act as an interferon antagonist, which involves deubiquitinating and deISGylating cellular proteins. Here, we test the hypothesis that the Ubl2 domain is not required for the catalytic function of MERS PLpro in vitro...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28057356/cell-wall-synthesis-and-central-carbohydrate-metabolism-are-interconnected-by-the-snf1-mig1-pathway-in-kluyveromyces-lactis
#9
Dorthe Rippert, Katja Backhaus, Rosaura Rodicio, Jürgen J Heinisch
The trimeric AMP-activated kinase complex (AMPK) is conserved from yeast to humans and is best known for its role in balancing energy metabolism. Additional functions, including the regulation of cell wall biosynthesis, have been proposed for the SNF1 complex, the baker's yeast homolog of AMPK. We here demonstrate that this function is conserved in the Crabtree-negative milk yeast Kluyveromyces lactis. Deletion mutants in the genes encoding the subunits of the trimeric complex (Klsnf1, Klgal83, Klsnf4) displayed increased sensitivities towards cell wall stress agents and a mutant lacking the kinase subunit had a thinner cell wall in transmission electron micrographs as compared to wild type...
January 2017: European Journal of Cell Biology
https://www.readbyqxmd.com/read/28050879/using-critical-consciousness-to-inform-health-professions-education-a%C3%A2-literature-review
#10
REVIEW
Mark Halman, Lindsay Baker, Stella Ng
PURPOSE: To explore how, in health professions education (HPE), the concept of critical consciousness has been defined and discussed, and to consider and suggest how critical pedagogy could be applied in practice. This exploration responds to increasing calls in the literature for HPE to foster compassionate care and social consciousness through the social sciences and humanities. METHOD: The authors searched Medline/PubMed, ERIC and Web of Science for articles focusing on critical consciousness and/or critical pedagogy involving health professions...
February 2017: Perspectives on Medical Education
https://www.readbyqxmd.com/read/28028742/growth-enzymatic-glutathione-peroxidase-activity-and-biochemical-status-of-juvenile-barramundi-lates-calcarifer-fed-dietary-fermented-soybean-meal-and-organic-selenium
#11
I Ilham, Ravi Fotedar
Solvent-extracted soybean meal (SBM) was fermented using baker's yeast Saccharomyces cerevisae at 30 °C for 5 days. Four isonitrogenous and isocaloric diets containing 75% SBM protein, either fermented or non-fermented (SBM and FSBM), and supplemented or not with organic Se (OS) (SBMOS and FSBMOS), were fed to triplicate groups of juvenile barramundi (Lates calcarifer) (initial weight of 5 g) for 75 days. A fishmeal (FM)-based diet formulated for juvenile barramundi was used as a reference diet. The growth of fish was significantly affected by either the interaction of SBM type or by the OS level...
December 27, 2016: Fish Physiology and Biochemistry
https://www.readbyqxmd.com/read/28025774/-they-treat-you-a-different-way-public-insurance-stigma-and-the-challenge-to-quality-health-care
#12
Anna C Martinez-Hume, Allison M Baker, Hannah S Bell, Isabel Montemayor, Kristan Elwell, Linda M Hunt
Under the Affordable Care Act, Medicaid Expansion programs are extending Medicaid eligibility and increasing access to care. However, stigma associated with public insurance coverage may importantly affect the nature and content of the health care beneficiaries receive. In this paper, we examine the health care stigma experiences described by a group of low-income public insurance beneficiaries. They perceive stigma as manifest in poor quality care and negative interpersonal interactions in the health care setting...
March 2017: Culture, Medicine and Psychiatry
https://www.readbyqxmd.com/read/28013504/macromolecule-biosynthesis-assay-and-fluorescence-spectroscopy-methods-to-explore-antimicrobial-peptide-mode-s-of-action
#13
Bimal Jana, Kristin Renee Baker, Luca Guardabassi
Antimicrobial peptides (AMPs) are viable alternatives to the currently available antimicrobials, and numerous studies have investigated their possible use as therapeutic agents for specific clinical applications. AMPs are a diverse class of antimicrobials that often act upon the bacterial cell membrane but may exhibit additional modes of action. Identification of the multiple modes of action requires a comprehensive study at subinhibitory concentrations and careful data analysis since additional modes of action can be eclipsed by AMP action on the cell membrane...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28009518/measurement-of-in-vivo-gastrointestinal-release-and-dissolution-of-three-locally-acting-mesalamine-formulations-in-regions-of-the-human-gastrointestinal-tract
#14
Alex Yu, Jason R Baker, Ann F Fioritto, Ying Wang, Ruijuan Luo, Siwei Li, Bo Wen, Michael Bly, Yasuhiro Tsume, Mark J Koenigsknecht, Xinyuan Zhang, Robert Lionberger, Gordon L Amidon, William L Hasler, Duxin Sun
As an orally administered, locally acting gastrointestinal drug, mesalamine products are designed to achieve high local drug concentration in the gastrointestinal (GI) tract for the treatment of ulcerative colitis. The aim of this study was to directly measure and compare drug dissolution of three mesalamine formulations in human GI tract and to correlate their GI concentration with drug concentration in plasma. Healthy human subjects were orally administered Pentasa, Apriso, or Lialda. GI fluids were aspirated from stomach, duodenum, proximal jejunum, mid jejunum, and distal jejunum regions...
December 23, 2016: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/27986800/a-matter-of-life-and-death-controversy-at-the-interface-between-clinical-and-legal-decision-making-in-prolonged-disorders-of-consciousness
#15
Lynne Turner-Stokes
Best interests decision-making and end-of-life care for patients in permanent vegetative or minimally conscious states (VS/MCS) is a complex area of clinical and legal practice, which is poorly understood by most clinicians, lawyers and members of the public. In recent weeks, the Oxford Shrieval lecture by Mr Justice Baker ('A Matter of Life and Death', 11 October 2016) and its subsequent reporting in the public press has sparked debate on the respective roles of clinicians, the Court of Protection and the Mental Capacity Act 2005 in decisions to withhold or withdraw life-sustaining treatments from patients with disorders of consciousness...
December 16, 2016: Journal of Medical Ethics
https://www.readbyqxmd.com/read/27986569/backbone-engineering-within-a-latent-%C3%AE-hairpin-structure-to-design-inhibitors-of-polyglutamine-amyloid-formation
#16
Karunakar Kar, Matthew A Baker, George A Lengyel, Cody L Hoop, Ravindra Kodali, In-Ja Byeon, W Seth Horne, Patrick C A van der Wel, Ronald Wetzel
Candidates for the toxic molecular species in the expanded polyglutamine (polyQ) repeat diseases range from various types of aggregates to "misfolded" monomers. One way to vet these candidates is to develop mutants that restrict conformational landscapes. Previously, we inserted two self-complementary β-hairpin enhancing motifs into a short polyQ sequence to generate a mutant, here called "βHP," that exhibits greatly improved amyloid nucleation without measurably enhancing β-structure in the monomer ensemble...
January 20, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/27936070/attraction-oviposition-and-larval-survival-of-the-fungus-gnat-lycoriella-ingenua-on-fungal-species-isolated-from-adults-larvae-and-mushroom-compost
#17
Kevin R Cloonan, Stefanos S Andreadis, Haibin Chen, Nina E Jenkins, Thomas C Baker
We previously showed that the females of the mushroom sciarid, Lycoriella ingenua (Dufour, 1839) (Diptera: Sciaridae), one of the most severe pests of the cultivated white button mushroom, Agaricus bisporus (J.E. Lange) Emil J. Imbach (Agaricales: Agaricaceae), are attracted to the mushroom compost that mushrooms are grown on and not to the mushrooms themselves. We also showed that females are attracted to the parasitic green mold, Trichoderma aggressivum. In an attempt to identify what is in the mushroom compost that attracts female L...
2016: PloS One
https://www.readbyqxmd.com/read/27927840/%C3%AE-blockers-heart-disease-and-copd-current-controversies-and-uncertainties
#18
Jillian G Baker, Robert G Wilcox
Treating people with cardiovascular disease and COPD causes significant clinician anxiety. β-Blockers save lives in people with heart disease, specifically postinfarction and heart failure. COPD and heart disease frequently coexist and people with both disorders have particularly high cardiovascular mortality. There are concerns about giving β-blockers to people with concomitant COPD that include reduced basal lung function, diminished effectiveness of emergency β-agonist treatments, reduced benefit of long-acting β-agonist treatment and difficulty in discriminating between asthma and COPD...
March 2017: Thorax
https://www.readbyqxmd.com/read/27925187/depletion-of-cd52-positive-cells-inhibits-the-development-of-central-nervous-system-autoimmune-disease-but-deletes-an-immune-tolerance-promoting-cd8-t-cell-population-implications-for-secondary-autoimmunity-of-alemtuzumab-in-multiple-sclerosis
#19
Stephanie von Kutzleben, Gareth Pryce, Gavin Giovannoni, David Baker
The objective was to determine whether CD52 lymphocyte depletion can act to promote immunological tolerance induction by way of intravenous antigen administration such that it could be used to either improve efficiency of multiple sclerosis (MS) inhibition or inhibit secondary autoimmunities that may occur following alemtuzumab use in MS. Relapsing experimental autoimmune encephalomyelitis was induced in ABH mice and immune cell depletion was therapeutically applied using mouse CD52 or CD4 (in conjunction with CD8 or CD20) depleting monoclonal antibodies...
April 2017: Immunology
https://www.readbyqxmd.com/read/27920276/studies-of-recombinant-twa1-reveal-constitutive-dimerization
#20
Ore Francis, Genevieve E Baker, Paul R Race, Josephine C Adams
The mammalian muskelin/RanBP9/C-terminal to LisH (CTLH) complex and the Saccharomyces cerevisiae glucose-induced degradation (GID) complex are large, multi-protein complexes that each contain a RING E3 ubiquitin ligase. The yeast GID complex acts to degrade a key enzyme of gluconeogenesis, fructose 1,6-bisphosphatase, under conditions of abundant fermentable carbon sources. However, the assembly and functions of the mammalian complex remain poorly understood. A striking feature of these complexes is the presence of multiple proteins that contain contiguous lissencephaly-1 homology (LisH), CTLH and C-terminal CT11-RanBP9 (CRA) domains...
February 28, 2017: Bioscience Reports
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