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https://www.readbyqxmd.com/read/28102732/exacerbating-effects-of-pm2-5-in-ova-sensitized-and-challenged-mice-and-the-expression-of-trpa1-and-trpv1-protein-in-lung
#1
Hong Liu, Xinsheng Fan, Naiqian Wang, Yuyan Zhang, Jinghua Yu
OBJECTIVE: To investigate the effects of PM2.5 on asthma-related phenotypes and on the expression of TRPA1, V1 protein in lung in a mouse model of asthma. METHODS: Female Balb/c mice were utilized to establish 28 and 42 day asthma models. Mice were sensitized with OVA and challenged with OVA, OVA plus normal saline (NS), or OVA plus PM2.5 at two doses, 1.6 mg·kg(-1) or 8.0 mg·kg(-1). PM2.5 was administrated by intratracheal instillationwithout anesthesia. 24 hours after the final OVA challenge changes in airway resistance (RI) and lung compliance (Cdyn) in response to acetylcholine chloride (ACH) were evaluated, and blood, bronchoalveolar lavage fluid (BALF) and lung tissue samples were taken...
January 19, 2017: Journal of Asthma: Official Journal of the Association for the Care of Asthma
https://www.readbyqxmd.com/read/28102519/nmdar-encephalitis-following-herpes-simplex-virus-encephalitis
#2
REVIEW
Jonathan Galli, Stacey L Clardy, Amanda L Piquet
PURPOSE OF REVIEW: Herpes simplex virus encephalitis (HSVE) is often associated with significant morbidity and mortality, and despite appropriate treatment with antivirals, worsening of neurological symptoms or relapse occurs in a subset of patients. Recent data suggests that many relapses are likely caused by a secondary immune response, with the N-methyl-D-aspartate receptor (NMDAR) antibody being the most commonly associated autoantibody. We provide a review of the relevant literature, examining the relationship between HSVE and development of autoimmunity...
January 2017: Current Infectious Disease Reports
https://www.readbyqxmd.com/read/28101036/anti-n-methyl-d-aspartate-receptor-encephalitis-in-hiv-infection
#3
Eunice Patarata, Vera Bernardino, Ana Martins, Rui Pereira, Conceição Loureiro, Maria Francisca Moraes-Fontes
Anti-N-methyl-D-aspartate receptor (anti-NMDAR) encephalitis is a rare condition characterized by emotional and behavioral disturbances, dyskinesias, and extrapyramidal signs. It occurs in young women of reproductive age and is classically described as a paraneoplastic phenomenon. We present a 36-year-old, HIV-positive female who was admitted to the hospital in an acute confusional state, with a stiff posture, periods of motor agitation, and myoclonic jerks of the hands. Her mental state progressively deteriorated...
September 2016: Case Reports in Neurology
https://www.readbyqxmd.com/read/28100813/coral-calcifying-fluid-ph-is-modulated-by-seawater-carbonate-chemistry-not-solely-seawater-ph
#4
S Comeau, E Tambutté, R C Carpenter, P J Edmunds, N R Evensen, D Allemand, C Ferrier-Pagès, S Tambutté, A A Venn
Reef coral calcification depends on regulation of pH in the internal calcifying fluid (CF) in which the coral skeleton forms. However, little is known about calcifying fluid pH (pHCF) regulation, despite its importance in determining the response of corals to ocean acidification. Here, we investigate pHCF in the coral Stylophora pistillata in seawater maintained at constant pH with manipulated carbonate chemistry to alter dissolved inorganic carbon (DIC) concentration, and therefore total alkalinity (AT). We also investigate the intracellular pH of calcifying cells, photosynthesis, respiration and calcification rates under the same conditions...
January 25, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28100643/fluid-shear-stress-increases-transepithelial-transport-of-ca2-in-ciliated-distal-convoluted-and-connecting-tubule-cells
#5
Sami G Mohammed, Francisco J Arjona, Femke Latta, René J M Bindels, Ronald Roepman, Joost G J Hoenderop
In kidney, transcellular transport of Ca(2+) is mediated by transient receptor potential vanilloid 5 and Na(+)-Ca(2+) exchanger 1 proteins in distal convoluted and connecting tubules (DCT and CNT, respectively). It is not yet understood how DCT/CNT cells can adapt to differences in tubular flow rate and, consequently, Ca(2+) load. This study aims to elucidate the molecular mechanisms by which DCT/CNT cells sense fluid dynamics to control transepithelial Ca(2+) reabsorption and whether their primary cilia play an active role in this process...
January 18, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28100478/adropin-acts-in-the-rat-paraventricular-nucleus-to-influence-neuronal-excitability
#6
Spencer P Loewen, Alastair V Ferguson
Adropin is a peptide hormone with cardiovascular and metabolic roles in the periphery, including effects on glucose and lipid homeostasis. Central administration of adropin has been shown to inhibit water intake in rats, however, the site at which central adropin acts has yet to be elucidated. The hypothalamic paraventricular nucleus (PVN), a critical autonomic control center, plays essential roles in the control of fluid balance, energy homeostasis and cardiovascular regulation, and is therefore a potential target for centrally acting adropin...
January 18, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28100167/conserved-gene-expression-in-sperm-reservoirs-between-birds-and-mammals-in-response-to-mating
#7
Mohammad Atikuzzaman, Manuel Alvarez-Rodriguez, Alejandro Vicente Carrillo, Martin Johnsson, Dominic Wright, Heriberto Rodriguez-Martinez
BACKGROUND: Spermatozoa are stored in the oviductal functional sperm reservoir in animals with internal fertilization, including zoologically distant classes such as pigs or poultry. They are held fertile in the reservoir for times ranging from a couple of days (in pigs), to several weeks (in chickens), before they are gradually released to fertilize the newly ovulated eggs. It is currently unknown whether females from these species share conserved mechanisms to tolerate such a lengthy presence of immunologically-foreign spermatozoa...
January 18, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28099388/valproic-acid-mitigates-the-inflammatory-response-and-prevents-acute-respiratory-distress-syndrome-in-a-murine-model-of-escherichia-coli-pneumonia-at-the-expense-of-bacterial-clearance
#8
George Kasotakis, Manuel Galvan, Elizabeth King, Beda Sarkar, Arthur Stucchi, Joseph P Mizgerd, Peter A Burke, Daniel Remick
BACKGROUND: Histone deacetylase inhibitors (HDACI) are members of a family of epigenetic modifying agents with broad anti-inflammatory properties. These anti-inflammatory properties may have important therapeutic implications in Acute Respiratory Distress Syndrome (ARDS). However, administration of HDACI may create an immunosuppressive environment conducive to bacterial growth. Accordingly, the aim of the current study is to investigate the effect of HDACI Valproic Acid (VPA) on host inflammatory response and bacterial burden in a murine model of E...
January 18, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28099322/mitochondrial-dna-and-tlr9-signaling-is-not-involved-in-mechanical-ventilation-induced-inflammation
#9
Kim Timmermans, Matthijs Kox, Michiel Vaneker, Peter Pickkers, Gert Jan Scheffer
Exogenous administration of mitochondrial DNA (mtDNA) causes inflammatory lung injury in a toll-like receptor (TLR) 9-dependent manner. We investigated whether mechanical ventilation results in endogenous release of mtDNA and whether TLR9 plays a role in the pulmonary inflammatory response induced by mechanical ventilation.Wild-type and TLR9/ C57bl/6 mice were ventilated with low (8 mL/kg) and high (32 mL/kg) tidal volumes for 4 hours. Levels of nuclear DNA and mtDNA in bronchoalveolar lavage fluid, as well as pulmonary concentrations of keratinocyte-derived chemokine, interleukin-1β, and interleukin-6, were determined...
February 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28098559/lattice-boltzmann-simulations-of-the-bead-spring-microswimmer-with-a-responsive-stroke-from-an-individual-to-swarms
#10
Kristina Pickl, Jayant Pande, Harald Köstler, Ulrich Rüde, Ana-Suncana Smith
Propulsion at low Reynolds numbers is often studied by defining artificial microswimmers which exhibit a particular stroke. The disadvantage of such an approach is that the stroke does not adjust to the environment, in particular the fluid flow, which can diminish the effect of hydrodynamic interactions. To overcome this limitation, we simulate a microswimmer consisting of three beads connected by springs and dampers, using the self-developed waLBerla and <i>pe</i> framework based on the lattice Boltzmann method and the discrete element method...
January 18, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28098315/a-ph-responsive-wormlike-micellar-system-of-a-noncovalent-interaction-based-surfactant-with-a-tunable-molecular-structure
#11
Wanli Kang, Pengxiang Wang, Haiming Fan, Hongbin Yang, Caili Dai, Xia Yin, Yilu Zhao, Shujun Guo
Responsive wormlike micelles are very useful in a number of applications, whereas it is still challenging to create dramatic viscosity changes in wormlike micellar systems. Here we developed a pH-responsive wormlike micellar system based on a noncovalent constructed surfactant, which is formed by the complexation of N-erucamidopropyl-N,N-dimethylamine (UC22AMPM) and citric acid at the molar ratio of 3 : 1 (EACA). The phase behavior, aggregate microstructure and viscoelasticity of EACA solutions were investigated by macroscopic appearance observation, rheological and cryo-TEM measurements...
January 18, 2017: Soft Matter
https://www.readbyqxmd.com/read/28098297/spontaneous-assembly-of-a-hybrid-crystal-liquid-phase-in-inverse-patchy-colloid-systems
#12
Silvano Ferrari, Emanuela Bianchi, Gerhard Kahl
Materials with well-defined architectures are heavily sought after in view of their diverse technological applications. Among the desired target architectures, lamellar phases stand out for their exceptional mechanical and optical features. Here we show that charged colloids, decorated on their poles with two oppositely charged regions possess the unusual ability to spontaneously assemble in different morphologies of (semi-)ordered, layered particle arrangements which maintain their structural stability over a surprisingly large temperature range...
January 18, 2017: Nanoscale
https://www.readbyqxmd.com/read/28097935/finite-element-simulations-of-the-head-brain-responses-to-the-top-impacts-of-a-construction-helmet-effects-of-the-neck-and-body-mass
#13
John Z Wu, Christopher S Pan, Bryan M Wimer, Charles L Rosen
Traumatic brain injuries are among the most common severely disabling injuries in the United States. Construction helmets are considered essential personal protective equipment for reducing traumatic brain injury risks at work sites. In this study, we proposed a practical finite element modeling approach that would be suitable for engineers to optimize construction helmet design. The finite element model includes all essential anatomical structures of a human head (i.e. skin, scalp, skull, cerebrospinal fluid, brain, medulla, spinal cord, cervical vertebrae, and discs) and all major engineering components of a construction helmet (i...
January 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28097883/is-angiotensin-3-4-val-tyr-the-shortest-angiotensin-ii-derived-peptide-opening-new-vistas-on-the-renin-angiotensin-system
#14
Juliana Dias, Flavia Axelband, Lucienne S Lara, Humberto Muzi-Filho, Adalberto Vieyra
Angiotensin-(3-4) (Ang-(3-4) or Val-Tyr) is the shorter angiotensin (Ang) II-derived peptide, formed through successive hydrolysis that culminates with the release of Val-Tyr as a dipeptide. It is formed both in plasma and in kidney from Ang II and Ang III, and can be considered a component of the systemic and organ-based renin-angiotensin system. It is potently antihypertensive in humans and rats, and its concerted actions on proximal tubule cells culminate in the inhibition of fluid reabsorption, hyperosmotic urinary excretion of Na(+)...
January 2017: Journal of the Renin-angiotensin-aldosterone System: JRAAS
https://www.readbyqxmd.com/read/28097685/cartilage-oligomeric-matrix-protein-comp-neo-epitope-in-the-synovial-fluid-of-horses-with-acute-lameness-a-new-biomarker-for-the-early-stages-of-osteoarthritis
#15
E Skiöldebrand, S Ekman, L MattssonHultén, E Svala, K Björkman, A Lindahl, A Lundqvist, P Önnerfjord, C Sihlbom, U Rüetschi
BACKGROUND: Clinical tools to diagnose the early changes of osteoarthritis (OA) that occur in the articular cartilage are lacking. OBJECTIVES: We sought to identify and quantify a novel cartilage oligomeric matrix protein (COMP) neo-epitope in the synovial fluid from the joints of healthy horses and those with different stages of OA. STUDY DESIGN: In vitro quantitative proteomics and assay development with application in synovial fluids samples obtained from biobanks of well-characterised horses...
January 17, 2017: Equine Veterinary Journal
https://www.readbyqxmd.com/read/28097479/structural-and-cooperative-length-scales-in-polymer-gels
#16
Baudouin Géraud, Loren Jørgensen, Christophe Ybert, Hélène Delanoë-Ayari, Catherine Barentin
Understanding the relationship between the material structural details, the geometrical confining constraints, the local dynamical events and the global rheological response is at the core of present investigations on complex fluid properties. In the present article, this problem is addressed on a model yield stress fluid made of highly entangled polymer gels of Carbopol which follows at the macroscopic scale the well-known Herschel-Bulkley rheological law. First, performing local rheology measurements up to high shear rates ([Formula: see text] s(-1))and under confinement, we evidence unambiguously the breakdown of bulk rheology associated with cooperative processes under flow...
January 2017: European Physical Journal. E, Soft Matter
https://www.readbyqxmd.com/read/28096524/a-case-of-seronegative-limbic-encephalitis-with-multiple-sclerosis-a-possible-overlapping-syndrome
#17
Zerrin Karaaslan, Özlem Mercan, Erdem Tüzün, Handan Mısırlı, Recai Türkoğlu
BACKGROUND Autoimmune encephalitis might coexist in patients with autoimmune demyelinating disorders. CASE REPORT We report on a case of a 45-year-old female multiple sclerosis (MS) patient presenting with acute onset short-term memory loss, altered mental status, inflammatory cerebrospinal fluid (CSF) findings and an MRI lesion on the left temporal lobe. An extensive panel for neuronal autoantibodies proved negative. Neuropsychological symptoms gave a prompt response to immunotherapy but nevertheless control MRI showed left hippocampal atrophy...
January 18, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28096174/anti-folate-receptor-%C3%AE-ige-but-not-igg-recruits-macrophages-to-attack-tumors-via-tnf-%C3%AE-mcp-1-signaling
#18
Debra H Josephs, Heather J Bax, Tihomir Dodev, Mirella Georgouli, Mano Nakamura, Giulia Pellizzari, Louise Saul, Panagiotis Karagiannis, Anthony Cheung, Cecilia Herraiz, Kristina M Ilieva, Isabel Correa, Matthew Fittall, Silvia Crescioli, Patrycja Gazinska, Natalie Woodman, Silvia Mele, Giulia Chiaruttini, Amy E Gilbert, Alexander Koers, Marguerite Bracher, Christopher Selkirk, Heike Lentfer, Claire Barton, Elliott Lever, Gareth Muirhead, Sophia Tsoka, Silvana Canevari, Mariangela Figini, Ana Montes, Noel Downes, David Dombrowicz, Christopher Corrigan, Andrew J Beavil, Frank O Nestle, Paul S Jones, Hannah J Gould, Victoria Sanz-Moreno, Philip J Blower, James Spicer, Sophia N Karagiannis
IgE antibodies are key mediators of anti-parasitic immune responses, but their potential for cancer treatment via antibody-directed cell-mediated cytotoxicity (ADCC) has been little studied. Recently, tumor antigen-specific IgEs were reported to restrict cancer cell growth by engaging high-affinity Fc receptors on monocytes and macrophages, however, the underlying therapeutic mechanisms were undefined and in vivo proof-of-concept was limited. Here, an immunocompetent rat model was designed to recapitulate the human IgE-Fcε receptor system for cancer studies...
January 17, 2017: Cancer Research
https://www.readbyqxmd.com/read/28095967/intravenous-immunoglobulin-therapy-in-pediatric-narcolepsy-a-nonrandomized-open-label-controlled-longitudinal-observational-study
#19
Michel Lecendreux, Johanna Berthier, Jennifer Corny, Olivier Bourdon, Claire Dossier, Christophe Delclaux
STUDY OBJECTIVES: Previous case reports of intravenous immunoglobulins (IVIg) in pediatric narcolepsy have shown contradictory results. METHODS: This was a nonrandomized, open-label, controlled, longitudinal observational study of IVIg use in pediatric narcolepsy with retrospective data collection from medical files obtained from a single pediatric national reference center for the treatment of narcolepsy in France. Of 56 consecutively referred patients with narcolepsy, 24 received IVIg (3 infusions administered at 1-mo intervals) in addition to standard care (psychostimulants and/or anticataplectic agents), and 32 continued on standard care alone (controls)...
January 11, 2017: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/28095328/an-integrated-proteomic-and-transcriptomic-analysis-of-perivitelline-fluid-proteins-in-a-freshwater-gastropod-laying-aerial-eggs
#20
Huawei Mu, Jin Sun, Horacio Heras, Ka Hou Chu, Jian-Wen Qiu
: Proteins of the egg perivitelline fluid (PVF) that surrounds the embryo are critical for embryonic development in many animals, but little is known about their identities. Using an integrated proteomic and transcriptomic approach, we identified 64 proteins from the PVF of Pomacea maculata - a freshwater snail adopting aerial oviposition. Proteins were classified into eight functional groups: major multifunctional perivitellin subunits, immune response, energy metabolism, protein degradation, oxidation-reduction, signaling and binding, transcription and translation, and others...
January 14, 2017: Journal of Proteomics
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