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https://www.readbyqxmd.com/read/28094164/disorders-characterized-by-predominant-or-exclusive-dermal-inflammation
#1
Mark R Wick
Some cutaneous inflammatory disorders are typified by a predominant or exclusive localization in the dermis. They can be further subdivided by the principal cell types into lymphocytic, neutrophilic, and eosinophilic infiltrates, and mixtures of them are also seen in a proportion of cases. This review considers such conditions. Included among the lymphoid lesions are viral exanthems, pigmented purpuras, gyrate erythemas, polymorphous light eruption, lupus tumidus, and cutaneous lymphoid hyperplasia. Neutrophilic infiltrates are represented by infections, Sweet syndrome, pyoderma gangrenosum, and hidradenitis suppurativa, as well as a group of so-called "autoinflammatory" dermatitides comprising polymorphonuclear leukocytes...
December 14, 2016: Seminars in Diagnostic Pathology
https://www.readbyqxmd.com/read/28079064/lasing-action-from-photonic-bound-states-in-continuum
#2
Ashok Kodigala, Thomas Lepetit, Qing Gu, Babak Bahari, Yeshaiahu Fainman, Boubacar Kanté
In 1929, only three years after the advent of quantum mechanics, von Neumann and Wigner showed that Schrödinger's equation can have bound states above the continuum threshold. These peculiar states, called bound states in the continuum (BICs), manifest themselves as resonances that do not decay. For several decades afterwards the idea lay dormant, regarded primarily as a mathematical curiosity. In 1977, Herrick and Stillinger revived interest in BICs when they suggested that BICs could be observed in semiconductor superlattices...
January 11, 2017: Nature
https://www.readbyqxmd.com/read/28077053/patient-empowerment-a-systematic-review-of-questionnaires-measuring-empowerment-in-cancer-patients
#3
Nanna Bjerg Eskildsen, Clara Ruebner Joergensen, Thora Grothe Thomsen, Lone Ross, Susanne Malchau Dietz, Mogens Groenvold, Anna Thit Johnsen
BACKGROUND: There is an increased attention to and demand for patient empowerment in cancer treatment and follow-up programs. Patient empowerment has been defined as feeling in control of or having mastery in relation to cancer and cancer care. This calls for properly developed questionnaires assessing empowerment from the user perspective. The aim of this review was to identify questionnaires and subscales measuring empowerment and manifestations of empowerment among cancer patients...
January 12, 2017: Acta Oncologica
https://www.readbyqxmd.com/read/28071736/orbital-angular-momentum-mode-division-filtering-for-photon-phonon-coupling
#4
Zhi-Han Zhu, Li-Wen Sheng, Zhi-Wei Lv, Wei-Ming He, Wei Gao
Stimulated Brillouin scattering (SBS), a fundamental nonlinear interaction between light and acoustic waves occurring in any transparency material, has been broadly studied for several decades and gained rapid progress in integrated photonics recently. However, the SBS noise arising from the unwanted coupling between photons and spontaneous non-coherent phonons in media is inevitable. Here, we propose and experimentally demonstrate this obstacle can be overcome via a method called orbital angular momentum mode division filtering...
January 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28070877/idiopathic-retroperitoneal-fibrosis-and-its-overlap-with-igg4-related-disease
#5
REVIEW
Giovanni Maria Rossi, Rossana Rocco, Eugenia Accorsi Buttini, Chiara Marvisi, Augusto Vaglio
Retroperitoneal fibrosis (RPF) is a rare disease characterised by fibrous tissue proliferation in the retroperitoneum, with encasement of the ureters and large vessels of the abdomen as the most destructive of potentially severe complications. It can either be idiopathic, or secondary to infections, malignancies, or the use of certain drugs. The idiopathic form accounts for approximately 75% of the cases, and is usually responsive to immunosuppressive therapy. In recent years, the emergence of a new clinical entity, IgG4-related disease (IgG4-RD), shed light on many fibro-inflammatory disorders once thought to be separate clinical entities, although frequently associated in the so-called multifocal fibrosclerosis...
January 9, 2017: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/28068904/long-term-kinetics-of-zika-virus-rna-and-antibodies-in-body-fluids-of-a-vasectomized-traveller-returning-from-martinique-a-case-report
#6
Guenter Froeschl, Kristina Huber, Frank von Sonnenburg, Hans-Dieter Nothdurft, Gisela Bretzel, Michael Hoelscher, Lothar Zoeller, Matthias Trottmann, Francisco Pan-Montojo, Gerhard Dobler, Silke Woelfel
BACKGROUND: The magnitude of the current Zika virus (ZIKV) epidemic has led to a declaration of a Public Health Emergency of International Concern by the WHO. Findings of viable viral particles in semen for several weeks are corroborating reports of sexual transmission of ZIKV. Serious consequences of a positive diagnostic result particularly in the pregnant patient are calling for precise diagnostic tools also at later time points after infection. Currently, recommendations suggest a diagnostic period of direct viral detection of 5 to 7 days after onset of symptoms in serum or plasma, and up to 3 weeks in urine samples...
January 10, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28067287/smartphone-based-low-light-detection-for-bioluminescence-application
#7
Huisung Kim, Youngkee Jung, Iyll-Joon Doh, Roxana Andrea Lozano-Mahecha, Bruce Applegate, Euiwon Bae
We report a smartphone-based device and associated imaging-processing algorithm to maximize the sensitivity of standard smartphone cameras, that can detect the presence of single-digit pW of radiant flux intensity. The proposed hardware and software, called bioluminescent-based analyte quantitation by smartphone (BAQS), provides an opportunity for onsite analysis and quantitation of luminescent signals from biological and non-biological sensing elements which emit photons in response to an analyte. A simple cradle that houses the smartphone, sample tube, and collection lens supports the measuring platform, while noise reduction by ensemble averaging simultaneously lowers the background and enhances the signal from emitted photons...
January 9, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28067226/syntrophic-anaerobic-photosynthesis-via-direct-interspecies-electron-transfer
#8
Phuc T Ha, Stephen R Lindemann, Liang Shi, Alice C Dohnalkova, James K Fredrickson, Michael T Madigan, Haluk Beyenal
Microbial phototrophs, key primary producers on Earth, use H2O, H2, H2S and other reduced inorganic compounds as electron donors. Here we describe a form of metabolism linking anoxygenic photosynthesis to anaerobic respiration that we call 'syntrophic anaerobic photosynthesis'. We show that photoautotrophy in the green sulfur bacterium Prosthecochloris aestaurii can be driven by either electrons from a solid electrode or acetate oxidation via direct interspecies electron transfer from a heterotrophic partner bacterium, Geobacter sulfurreducens...
January 9, 2017: Nature Communications
https://www.readbyqxmd.com/read/28063986/evidence-of-structurally-continuous-collagen-fibrils-in-tendons
#9
Rene B Svensson, Andreas Herchenhan, Tobias Starborg, Michael Larsen, Karl E Kadler, Klaus Qvortrup, S Peter Magnusson
: Tendons transmit muscle-generated force through an extracellular matrix of aligned collagen fibrils. The force applied by the muscle at one end of a microscopic fibril has to be transmitted through the macroscopic length of the tendon by mechanisms that are poorly understood. A key element in this structure-function relationship is the collagen fibril length. During embryogenesis short fibrils are produced but they grow rapidly with maturation. There is some controversy regarding fibril length in adult tendon, with mechanical data generally supporting discontinuity while structural investigations favor continuity...
January 5, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28062269/molecular-based-phylogenetic-species-recognition-in-the-genus-pampus-perciformes-stromateidae-reveals-hidden-diversity-in-the-indian-ocean
#10
P R Divya, C Mohitha, G Kumar Rahul, C P Rajool Shanis, V S Basheer, A Gopalakrishnan
Pomfrets (Genus Pampus) are commercially important fishes in the Indo Pacific region. The systematics of this genus is complicated due to morphological similarities between species. The silver pomfret from Indian waters has long been considered to be Pampus argenteus. The objective of the study was to utilize the mitochondrial COI gene to establish the molecular identity of the silver pomfret distributed in Indian waters and to resolve the phylogenetic relationships among Pampus species in the world based on sequence data in the NCBI database...
January 3, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28061465/sirp%C3%AE-antibody-fusion-proteins-stimulate-phagocytosis-and-promote-elimination-of-acute-myeloid-leukemia-cells
#11
Laia Pascual Ponce, Nadja C Fenn, Nadine Moritz, Christina Krupka, Jan-Hendrik Kozik, Kirsten Lauber, Marion Subklewe, Karl-Peter Hopfner
CD47, expressed on a variety of tumor cells, confers immune resistance by delivering an inhibitory "don't eat me" signal to phagocytic cells via its myeloid-specific receptor SIRPα. Recent studies have shown that blocking the CD47-SIRPα axis with CD47-directed antibodies or antibody-derivatives enhances phagocytosis and increases antitumor immune effects. However, CD47 expression on healthy cells creates an antigen sink and potential sites of toxicity, limiting the efficacy of CD47-directed therapies. In this study, we first characterized CD47 expression in Acute Myeloid Leukemia (AML) patients (n = 213) and found that CD47 is highly expressed on both AML bulk and stem cells irrespective of the disease state...
January 4, 2017: Oncotarget
https://www.readbyqxmd.com/read/28060350/2-methacryloyloxyethyl-phosphorylcholine-polymer-treatment-of-complete-dentures-to-inhibit-denture-plaque-deposition
#12
Kenji Ikeya, Miya Fukunishi, Fuminori Iwasa, Yuuki Inoue, Kazuhiko Ishihara, Kazuyoshi Baba
Removable dentures made of poly (methyl methacrylate) (PMMA) are prone to bacterial adherence and dental plaque formation, which is called denture plaque. Denture plaque-associated infection is a source of serious dental and medical complications in the elderly. 2-Methacryloyloxyethyl phosphorylcholine (MPC) is a well-known biomedical material that exhibits marked antithrombogenicity and tissue compatibility because of its high resistance to protein adsorption and cell adhesion. Therefore, MPC polymer coatings are suggested to have the potential to inhibit plaque deposition on the surface of PMMA dentures...
December 26, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28060282/isolation-of-giant-lampbrush-chromosomes-from-living-oocytes-of-frogs-and-salamanders
#13
Joseph G Gall, Zehra F Nizami
We describe methods for studying the giant transcriptionally active lampbrush chromosomes (LBCs) found in the oocyte, or unlaid egg, of frogs and salamanders. Individual LBCs can be up to 1 mm in length and they reside in a gigantic nucleus, itself up to 0.5 mm in diameter. The large size of the chromosomes permits unparalleled observations of active genes by light optical microscopy, but at the same time special techniques are required for isolating the nucleus, removing the nuclear envelope, and spreading the chromosomes on a microscope slide...
December 5, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28059879/the-implementation-challenge-and-the-learning-health-system-for-sci-initiative
#14
Gerold Stucki, Jerome Bickenbach
The paper introduces the special issue by linking the International Spinal Cord Injury (InSCI) Community Survey study to the Learning Health System for SCI Initiative (LHS-SCI). The LHS-SCI was designed to respond to the implementation challenge of bringing about policy reform in light of the targeted policy recommendations of World Health Organization's International Perspectives on SCI report as well as the call for action of WHO's Global Disability Action Plan. The paper reviews the components of LHS-SCI relevant to internationally comparable information, a theory of change to guide for action, and the tools for evidence-informed policy...
February 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28059531/majorana-time-reversal-symmetries-a-fundamental-principle-for-sign-problem-free-quantum-monte%C3%A2-carlo-simulations
#15
Zi-Xiang Li, Yi-Fan Jiang, Hong Yao
A fundamental open issue in physics is whether and how the fermion sign problem in quantum Monte Carlo (QMC) simulations can be solved generically. Here, we show that Majorana-time-reversal (MTR) symmetries can provide a unifying principle to solve the fermion sign problem in interacting fermionic models. By systematically classifying Majorana-bilinear operators according to the anticommuting MTR symmetries they respect, we rigorously prove that there are two and only two fundamental symmetry classes which are sign-problem-free and which we call the "Majorana class" and "Kramers class," respectively...
December 23, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/28059334/nanosecond-switching-of-micrometer-optical-retardance-by-an-electrically-controlled-nematic-liquid-crystal-cell
#16
Bing-Xiang Li, Sergij V Shiyanovskii, Oleg D Lavrentovich
Electro-optic response of liquid crystals in mainstream display applications exhibits a millisecond switching of optical retardance on the order of one micrometer. We demonstrate that a similarly large optical retardance can be switched much faster, within 10-100 nanoseconds, by using multiple passes of light through a cell filled with the nematic liquid crystal. The fast response is based on the so-called nanosecond electric modification of order parameters (NEMOP) effect. The described approach can be used to develop ultrafast optical shutters and modulators...
December 26, 2016: Optics Express
https://www.readbyqxmd.com/read/28059231/improving-color-reproduction-accuracy-of-a-mobile-liquid-crystal-display
#17
Eric Kirchner, Ivo van der Lans, Francisco M Martínez-Verdú, Esther Perales
The default method for color representation on displays involves sRGB as device-independent encoding color space. For improving color reproduction accuracy, we develop a device-specific display characterization model for the Apple iPad Air 2. In separate articles, we will evaluate the same method for other devices and for other display technologies. This model is combined with an easy-to-implement new method to account for the influence of illuminance from ambient light. The combination is called the mobile display characterization and illumination model (MDCIM) for the iPad Air 2, representing modern liquid crystal displays...
January 1, 2017: Journal of the Optical Society of America. A, Optics, Image Science, and Vision
https://www.readbyqxmd.com/read/28057943/taxonomic-description-of-in-situ-bee-pollen-from-the-middle-eocene-of-germany
#18
FriĐgeir Grímsson, Reinhard Zetter, Conrad C Labandeira, Michael S Engel, Torsten Wappler
The middle Eocene Messel and Eckfeld localities are renowned for their excellently preserved faunas and diverse floras. Here we describe for the first time pollen from insect-pollinated plants found in situ on well-preserved ancient bees using light and scanning electron microscopy. There have been 140 pollen types reported from Messel and 162 pollen types from Eckfeld. Here we document 23 pollen types, six from Messel and 18 from Eckfeld (one is shared). The taxa reported here are all pollinated by insects and mostly not recovered in the previously studied dispersed fossil pollen records...
January 2, 2017: Grana
https://www.readbyqxmd.com/read/28057586/deconvolutionlab2-an-open-source-software-for-deconvolution-microscopy
#19
REVIEW
Daniel Sage, Lauréne Donati, Ferréol Soulez, Denis Fortun, Guillaume Schmit, Arne Seitz, Romain Guiet, Cédric Vonesch, Michael Unser
Images in fluorescence microscopy are inherently blurred due to the limit of diffraction of light. The purpose of deconvolution microscopy is to compensate numerically for this degradation. Deconvolution is widely used to restore fine details of 3D biological samples. Unfortunately, dealing with deconvolution tools is not straightforward. Among others, end users have to select the appropriate algorithm, calibration and parametrization, while potentially facing demanding computational tasks. To make deconvolution more accessible, we have developed a practical platform for deconvolution microscopy called DeconvolutionLab...
January 2, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28052116/functional-maturation-of-human-stem-cell-derived-neurons-in-long-term-cultures
#20
Rebecca S Lam, Felix M Töpfer, Phillip G Wood, Volker Busskamp, Ernst Bamberg
Differentiated neurons can be rapidly acquired, within days, by inducing stem cells to express neurogenic transcription factors. We developed a protocol to maintain long-term cultures of human neurons, called iNGNs, which are obtained by inducing Neurogenin-1 and Neurogenin-2 expression in induced pluripotent stem cells. We followed the functional development of iNGNs over months and they showed many hallmark properties for neuronal maturation, including robust electrical and synaptic activity. Using iNGNs expressing a variant of channelrhodopsin-2, called CatCh, we could control iNGN activity with blue light stimulation...
2017: PloS One
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