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Michael K Yeung, Sophia L Sze, Jean Woo, Timothy Kwok, David H K Shum, Ruby Yu, Agnes S Chan
BACKGROUND: Some functional magnetic resonance imaging studies have reported altered activations in the frontal cortex during working memory (WM) performance in individuals with mild cognitive impairment (MCI), but the findings have been mixed. The objective of the present study was to utilize near-infrared spectroscopy (NIRS), an alternative imaging technique, to examine neural processing during WM performance in individuals with MCI. METHODS: Twenty-six older adults with MCI (7 males; mean age 69...
October 27, 2016: Dementia and Geriatric Cognitive Disorders
Ariane Cristina Barboza Zanetti, Carmen Silvia Gabriel, Andrea Bernardes, Leonardo Régis Leira Pereira
Objective: To describe the translation into Portuguese and cultural adaptation of a Questionnaire addressing High-Alert Medications to the Brazilian context. Methods: Methodological study comprising the translation from Chinese to Brazilian Portuguese, synthesis of translations, back translation, panel of experts, and pretest to obtain the final version of the questionnaire. Results: <inor lexical variations were resolved after obtaining consensus between the translators...
October 24, 2016: Revista Gaúcha de Enfermagem
Jean-Daniel Dubois, Vincent Cantin, Mathieu Piché, Martin Descarreaux
Despite an elusive pathophysiology, common characteristics are often observed in individuals with chronic low back pain (LBP). These include psychological symptoms, altered pain perception, altered pain modulation and altered muscle activation. These factors have been explored as possible determinants of disability, either separately or in cross-sectional studies, but were never assessed in a single longitudinal study. Therefore, the objective was to determine the relative contribution of psychological and neurophysiological factors to future disability in individuals with past LBP...
2016: PloS One
James P MacDonald, Pierre A dʼHemecourt, Lyle J Micheli
OBJECTIVE: Young athletes not uncommonly complain of back pain. Many patient-reported outcome measures are used to evaluate back pain, but none have been designed specifically to assess young, athletic patients. The Micheli Functional Scale (MFS) was developed to measure impairment due to back pain in this population. This study examined the reliability, validity, and responsiveness of the MFS used in routine clinical assessments. DESIGN: Retrospective Cohort Study...
November 2016: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
Peter Olsén, Jenny Undin, Karin Odelius, Helmut Keul, Ann-Christine Albertsson
Full control over the ceiling temperature (Tc) enables a selective transition between the monomeric and polymeric state. This is exemplified by the conversion of the monomer 2-allyloxymethyl-2-ethyl-trimethylene carbonate (AOMEC) to poly(AOMEC) and back to AOMEC within 10 h by controlling the reaction from conditions that favor ring-opening polymerization (Tc > T0) (where T0 is the reaction temperature) to conditions that favor ring-closing depolymerization (Tc < T0). The ring-closing depolymerization (RCDP) mirrors the polymerization behavior, with a clear relation between the monomer concentration and the molecular weight of the polymer, indicating that RCDP occurs at the chain end...
October 26, 2016: Biomacromolecules
Hendrik Poorter, Fabio Fiorani, Roland Pieruschka, Tobias Wojciechowski, Wim H van der Putten, Michael Kleyer, Uli Schurr, Johannes Postma
I. II. III. IV. V. VI. VII. VIII. References Appendix SUMMARY: Plant biologists often grow plants in growth chambers or glasshouses with the ultimate aim to understand or improve plant performance in the field. What is often overlooked is how results from controlled conditions translate back to field situations. A meta-analysis showed that lab-grown plants had faster growth rates, higher nitrogen concentrations and different morphology. They remained smaller, however, because the lab plants had grown for a much shorter time...
October 26, 2016: New Phytologist
Margaret Peggy Adamo, Jessica A Boten, Linda M Coyle, Kathleen A Cronin, Clara J K Lam, Serban Negoita, Lynne Penberthy, Jennifer L Stevens, Kevin C Ward
BACKGROUND: Researchers have used prostate-specific antigen (PSA) values collected by central cancer registries to evaluate tumors for potential aggressive clinical disease. An independent study collecting PSA values suggested a high error rate (18%) related to implied decimal points. To evaluate the error rate in the Surveillance, Epidemiology, and End Results (SEER) program, a comprehensive review of PSA values recorded across all SEER registries was performed. METHODS: Consolidated PSA values for eligible prostate cancer cases in SEER registries were reviewed and compared with text documentation from abstracted records...
October 26, 2016: Cancer
Taisuke Murata, Kenta Miwa, Noriaki Miyaji, Kei Wagatsuma, Tomoyuki Hasegawa, Keiichi Oda, Takuro Umeda, Takashi Iimori, Yoshitada Masuda, Takashi Terauchi, Mitsuru Koizumi
BACKGROUND: The point spread function (PSF) of positron emission tomography (PET) depends on the position across the field of view (FOV). Reconstruction based on PSF improves spatial resolution and quantitative accuracy. The present study aimed to quantify the effects of PSF correction as a function of the position of a traceable point-like (22)Na source over the FOV on two PET scanners with a different detector design. METHODS: We used Discovery 600 and Discovery 710 (GE Healthcare) PET scanners and traceable point-like (22)Na sources (<1 MBq) with a spherical absorber design that assures uniform angular distribution of the emitted annihilation photons...
December 2016: EJNMMI Physics
Matthias Jung, Dan Rujescu
No abstract text is available yet for this article.
October 25, 2016: European Archives of Psychiatry and Clinical Neuroscience
Gabor Kiraly, Athene S Simonyi, Melinda Turani, Istvan Juhasz, Gabor Nagy, Gaspar Banfalvi
In early S phase the newly replicated DNA is folded back to increasingly compact structures. The process of chromatin condensation inside the nucleus starts with the formation of a micronucleus observed in five established cell lines (K562, CHO, Indian muntjac, murine preB and SCC). Supercoiling of chromatin generates a polarized end-plate region extruded from the nucleus. The extruded chromatin is turned around itself forming the head portion (micronucleus) visible by fluorescence microscopy until the middle of S phase when chromatin structures are succeeded by distinguishable early forms of chromosomes...
October 25, 2016: Apoptosis: An International Journal on Programmed Cell Death
(no author information available yet)
No abstract text is available yet for this article.
October 26, 2016: Soft Matter
(no author information available yet)
No abstract text is available yet for this article.
October 26, 2016: Natural Product Reports
(no author information available yet)
No abstract text is available yet for this article.
October 26, 2016: Physical Chemistry Chemical Physics: PCCP
(no author information available yet)
No abstract text is available yet for this article.
October 26, 2016: Physical Chemistry Chemical Physics: PCCP
Jeffrey E Janis, Jenny C Barker
BACKGROUND: The reproducible benefits of mentoring to mentees have been studied extensively. However, insights from the mentor perspective are less well described. This study evaluates mentorship of plastic surgery medical students from the attending surgeon's perspective. A comparison is made with a previous publication evaluating mentorship from the medical student's perspective. METHODS: An electronic survey was sent to 1025 active members of the American Council of Academic Plastic Surgeons (ACAPS) and the American Association of Plastic Surgeons (AAPS), with a combined response rate of 23 percent...
November 2016: Plastic and Reconstructive Surgery
Myung Kyu Chung, Patrick J LaRiccia
Presented is the first reported case series of chronic neck and back pain associated with breast scars from breast surgery and successfully treated with an integrative medicine assessment and treatment approach, which included the assessment technique of autonomic response testing and the scar therapy technique of neural therapy. Implications for nursing practice are discussed.This is an open-access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4...
October 25, 2016: Holistic Nursing Practice
George A Prenosil, Bernd Klaeser, Michael Hentschel, Markus Fürstner, Michael Berndt, Thomas Krause, Thilo Weitzel
PURPOSE: A PET/CT system's imaging capabilities are best described by its point spread function (PSF) in the spatial domain or equivalently by its modulation transfer function (MTF) in the spatial frequency domain. Knowing PSFs or MTFs is a prerequisite for many numerical methods attempting to improve resolution and to reduce the partial volume effect. In PET/CT, the observed PSF is a convolution of the system's intrinsic imaging capabilities including image reconstruction (PSF0) and the positron range function (PRF) of the imaged β(+) emitting isotope...
October 2016: Medical Physics
Eiji Arima, Huanfei Wen, Yoshitaka Naitoh, Yan Jun Li, Yasuhiro Sugawara
The atomic force microscopy (AFM) is a very important tool for imaging and investigating the complex force interactions on sample surfaces with high spatial resolution. In the AFM, two types of detection systems of the tip-sample interaction forces have been used: an optical detection system and an electrical detection system. In optical detection systems, such as optical beam deflection system or optical fiber interferometer system, both the lateral and the vertical tip-sample forces can be measured simultaneously...
September 2016: Review of Scientific Instruments
Marcus Böckmann, Nikos L Doltsinis
The light-induced surface modification of a thin film of poly-(disperse orange-3-methylmethacrylate) is investigated computationally using atomistic molecular dynamics simulations specifically tailored to include photoisomerization dynamics. For a model surface consisting of a periodic pattern of alternating irradiated and dark spots, it is shown that repeated photoisomerization in the irradiated areas initially leads to a local temperature increase and a raised surface profile accompanied by a migration of molecules away from the bright spots...
October 21, 2016: Journal of Chemical Physics
Chandrashekhar V Kulkarni, Anan Yaghmur, Miloš Steinhart, Manfred Kriechbaum, Michael Rappolt
We present the first report on the effect of hydrostatic pressure on colloidally stabilized lipid nanoparticles enveloping inverse non-lamellar self-assemblies in their interiors. These internal self-assemblies were systematically tuned into bicontinuous cubic (Pn3m and Im3m), micellar cubic (Fd3m), hexagonal (H2), and inverse micellar (L2) phases by regulating the lipid-oil ratio while the hydrostatic pressure was varied from atmospheric pressure to 1200 bar, and back to the atmospheric pressure. The pressure effect on these lipid nanoparticles was compared with their equilibrium bulk, non-dispersed counterparts, i...
October 26, 2016: Langmuir: the ACS Journal of Surfaces and Colloids
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