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https://www.readbyqxmd.com/read/27911467/a-systematic-investigation-of-the-charging-effect-in-scanning-electron-microscopy-for-metal-nanostructures-on-insulating-substrates
#1
R Flatabø, A Coste, M M Greve
Scanning electron microscopy is perhaps the most important method for investigating and characterizing nanostructures. A well-known challenge in scanning electron microscopy is the investigation of insulating materials. As insulating materials do not provide a path to ground they accumulate charge, evident as image drift and image distortions. In previous work, we have seen that sample charging in arrays of metal nanoparticles on glass substrates leads to a shrinkage effect, resulting in a measurement error in the nanoparticle dimension of up to 15% at 10 kV and a probe current of 80 ± 10 pA...
December 2, 2016: Journal of Microscopy
https://www.readbyqxmd.com/read/27911398/evaluation-of-bioenergetic-function-in-cerebral-vascular-endothelial-cells
#2
Stephanie L Rellick, Heng Hu, James W Simpkins, Xuefang Ren
The integrity of the blood-brain-barrier (BBB) is critical to prevent brain injury. Cerebral vascular endothelial (CVE) cells are one of the cell types that comprise the BBB; these cells have a very high-energy demand, which requires optimal mitochondrial function. In the case of disease or injury, the mitochondrial function in these cells can be altered, resulting in disease or the opening of the BBB. In this manuscript, we introduce a method to measure mitochondrial function in CVE cells by using whole, intact cells and a bioanalyzer...
November 19, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911383/parallel-measurement-of-circadian-clock-gene-expression-and-hormone-secretion-in-human-primary-cell-cultures
#3
Volodymyr Petrenko, Camille Saini, Laurent Perrin, Charna Dibner
Circadian clocks are functional in all light-sensitive organisms, allowing for an adaptation to the external world by anticipating daily environmental changes. Considerable progress in our understanding of the tight connection between the circadian clock and most aspects of physiology has been made in the field over the last decade. However, unraveling the molecular basis that underlies the function of the circadian oscillator in humans stays of highest technical challenge. Here, we provide a detailed description of an experimental approach for long-term (2-5 days) bioluminescence recording and outflow medium collection in cultured human primary cells...
November 11, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911368/immunohistochemical-analysis-in-the-rat-central-nervous-system-and-peripheral-lymph-node-tissue-sections
#4
Milena Z Adzemovic, Manuel Zeitelhofer, Marianne Leisser, Ulricke Köck, Angela Kury, Tomas Olsson
Immunohistochemistry (IHC) provides highly specific, reliable and attractive protein visualization. Correct performance and interpretation of an IHC-based multicolor labeling is challenging, especially when utilized for assessing interrelations between target proteins in the tissue with a high fat content such as the central nervous system (CNS). Our protocol represents a refinement of the standard immunolabeling technique particularly adjusted for detection of both structural and soluble proteins in the rat CNS and peripheral lymph nodes (LN) affected by neuroinflammation...
November 14, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911361/spin-saturation-transfer-difference-nmr-sstd-nmr-a-new-tool-to-obtain-kinetic-parameters-of-chemical-exchange-processes
#5
María Teresa Quirós, Colin Macdonald, Jesús Angulo, María Paz Muñoz
This detailed protocol describes the new Spin Saturation Transfer Difference Nuclear Magnetic Resonance protocol (SSTD NMR), recently developed in our group to study processes of mutual-site chemical exchange that are difficult to analyze by traditional methods. As the name suggests, this method combines the Spin Saturation Transfer method used for small molecules, with the Saturation Transfer Difference (STD) NMR method employed for the study of protein-ligand interactions, by measuring transient spin saturation transfer along increasing saturation times (build-up curves) in small organic and organometallic molecules undergoing chemical exchange...
November 12, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911357/characterization-of-metabolic-status-in-nonhuman-primates-with-the-intravenous-glucose-tolerance-test
#6
Michael Staup, George Aoyagi, TeQuana Bayless, Yixin Wang, Keefe Chng
The intravenous glucose tolerance test (IVGTT) plays a key role in the characterization of glucose homeostasis. When taken together with serum biochemical profiles, inclusive of blood glucose levels in both the fed and fasted state, HbA1c, insulin levels, clinical history of diet, body composition, and body weight status, an assessment of normal and abnormal glycemic control can be made. Interpretation of an IVGTT is done through measurement of changes in glucose and insulin levels over time in relation to the dextrose challenge...
November 13, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/27911313/challenges-in-screening-and-recruitment-for-a-neuroimaging-study-in-cognitively-impaired-geriatric-inpatients
#7
Ivayla Apostolova, Catharina Lange, Anna Roberts, Hans Joachim Igel, Anja Mäurer, Stephanie Liese, Melanie Estrella, Vikas Prasad, Elisabeth Stechl, Gernot Lämmler, Elisabeth Steinhagen-Thiessen, Ralph Buchert
BACKGROUND: Neuroimaging-based biomarkers have the potential to improve etiological diagnosis of cognitive impairment in elderly inpatients. However, there is a relative lack of studies on neuroimaging-based biomarkers in hospitalized geriatric patients, as the vast majority of neuroimaging studies in dementia have focused on memory clinic outpatients. An important aspect of study planning is a priori estimation of the rate of screen failures. OBJECTIVE: To report on the rate and causes of screen failures in a prospective study on the utility of neuroimaging (PET, MRI) for the etiological diagnosis of newly manifested cognitive impairment in acutely hospitalized geriatric patients...
November 28, 2016: Journal of Alzheimer's Disease: JAD
https://www.readbyqxmd.com/read/27911244/neurosurgical-management-in-lateral-meningocele-syndrome-case-report
#8
Erik C Brown, Kunal Gupta, Christina Sayama
Lateral meningocele syndrome (LMS) is a rare genetic connective tissue disorder. It is associated with morphological changes similar to those of other connective tissue disorders, with the unique distinction of multiple, often bilateral and large, lateral meningoceles herniating through the spinal foramina. In some cases, these lateral meningoceles can cause pain and discomfort due to their presence within retroperitoneal tissues or cause direct compression of the spinal nerve root exiting the foramen; in some cases compression may also involve motor weakness...
December 2, 2016: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/27911168/effectiveness-of-communication-specific-coping-intervention-for-adults-with-traumatic-brain-injury-preliminary-results
#9
Jacinta M Douglas, Lucy Knox, Carren De Maio, Helen Bridge, Melanie Drummond, Joanne Whiteoak
People with traumatic brain injury (TBI) describe everyday interactions as a long-term challenge frequently associated with ongoing stress. Communication-specific Coping Intervention (CommCope-I) is a new treatment developed to target coping in the context of communication breakdown. The intervention incorporates principles of cognitive behavioural therapy, self-coaching and context-sensitive social communication therapy. The purpose of this study was to examine the effectiveness of CommCope-I in a group of adults with severe TBI and ongoing functional communication difficulties...
December 2, 2016: Neuropsychological Rehabilitation
https://www.readbyqxmd.com/read/27911123/lichen-sclerosus-et-atrophicus-in-a-surgical-scar-treated-with-fractional-laser
#10
Marta Mendieta Eckert, Izaskun Ocerin Guerra, Nerea Landa Gundin
Lichen sclerosus et atrophicus (LSA) is a chronic inflammatory disease of unknown cause that typically affects the genital area(1). It has been reported in post-traumatic areas as a result of Koebner´s phenomenon. LSA responds poorly to treatment making it a therapeutic challenge(2). Laser therapy has been described for LSA with variable results(3,4).
December 2, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
https://www.readbyqxmd.com/read/27911096/evaluating-health-advice-in-a-web-2-0-environment-the-impact-of-multiple-user-generated-factors-on-hiv-advice-perceptions
#11
Joseph B Walther, Jeong-Woo Jang, Ashley A Hanna Edwards
Unlike traditional media, social media systems often present information of different types from different kinds of contributors within a single message pane, a juxtaposition of potential influences that challenges traditional health communication processing. One type of social media system, question-and-answer advice systems, provides peers' answers to health-related questions, which yet other peers read and rate. Responses may appear good or bad, responders may claim expertise, and others' aggregated evaluations of an answer's usefulness may affect readers' judgments...
December 2, 2016: Health Communication
https://www.readbyqxmd.com/read/27911069/-urological-pathology-of-lymphatic-origin
#12
A Domènech, A Serrano, I Forner-Cordero, F Gómez, D Maldonado, C Domínguez
OBJECTIVES: Lymphatic disease is a rarely cause of some very unspecific genitourinary manifestations, assuming a diagnostic challenge in most cases. The aim of this paper is to warn about the possible etiology of these urological lymphatic presentations and discuss its management. METHODS: Retrospective review of clinical data in pediatric patients with urological pathology of lymphatic origin between 2008-2014. Three patients, two boys and a girl, were included...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27911063/-autologous-blood-pleurodesis-for-treatment-of-spontaneous-pneumothorax-and-persistent-air-leak-in-pediatric-patients
#13
P Jiménez Arribas, A Laín Fernández, G Guillén Burrieza, S López-Fernández, A Moreno Galdó, J Lloret Roca
AIM OF THE STUDY: Recurrent spontaneous pneumothorax (SP) and persistent air leak (PAL) are a therapeutic challenge in some patients. Autologous blood pleurodesis (ABP) is an alternative treatment, but its usefulness in pediatric patients has not been determined yet. MATERIAL AND METHODS: Retrospective study of pediatric patients treated with ABP at our institution between 2010 and 2014, with special assessment of its indications, description of the technique, volume of blood used, complications and outcomes...
January 25, 2016: Cirugía Pediátrica: Organo Oficial de la Sociedad Española de Cirugía Pediátrica
https://www.readbyqxmd.com/read/27911054/challenges-and-solutions-for-rectal-cancer-surgery-in-the-obese-patient
#14
EDITORIAL
Dieter Hahnloser
No abstract text is available yet for this article.
December 2016: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/27911047/modified-mrna-as-a-therapeutic-tool-to-induce-cardiac-regeneration-in-ischemic-heart-disease
#15
REVIEW
Yoav Hadas, Michael G Katz, Charles R Bridges, Lior Zangi
Ischemic heart disease (IHD) is a leading cause of morbidity and mortality in developed countries. Current pharmacological and interventional therapies provide significant improvement in the life quality of patient; however, they are mostly symptom-oriented and not curative. A high disease and economic burden of IHD requires the search for new therapeutic strategies to significantly improve patients' prognosis and quality of life. One of the main challenges during IHD is the massive loss of cardiomyocytes that possess minimal regenerative capacity...
December 2, 2016: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/27911045/anti-cancer-potential-of-ionic-liquids
#16
Ana Rita Dias, João Costa-Rodrigues, Maria Helena Fernandes, Ricardo Ferraz, Cristina Prudêncio
Nowadays, many of the challenges that pharmaceutical industry faces impose the need to innovative and effective therapies. The investigation of alternative and effective therapies at the level of cancer is an actual goal of pharmaceutical industry. Ionic Liquids (ILs) appear recently as potential target of study by pharmaceutical industry on search of new therapeutic agents. They are, by definition, organic salts with melting point below 100°C only composed by ions. Their man advantage, is the numerous combinations made between the cation and the anion, which allow adjustments in their physicochemical properties...
December 2, 2016: ChemMedChem
https://www.readbyqxmd.com/read/27911014/the-effectiveness-of-an-outdoor-adventure-programme-for-young-children-with-autism-spectrum-disorder-a-controlled-study
#17
Ditza A Zachor, Shira Vardi, Shani Baron-Eitan, Inbal Brodai-Meir, Noa Ginossar, Esther Ben-Itzchak
AIM: Outdoor adventure programmes aim to improve interpersonal relationships using adventurous activities. The current study examined the effectiveness of an outdoor adventure programme in children with autism spectrum disorders (ASD). METHOD: The study included 51 participants (40 males, 11 females; age 3y 4mo-7y 4mo) enrolled in ASD special education kindergartens. Only the intervention group (n=30) participated in the outdoor adventure programme for 13 weeks, completing challenging physical activities that required cooperation and communication with peers and instructors...
December 2, 2016: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/27910966/stem-cell-and-regenerative-medicine-global-conference-scrgc-2016-august-23-24-2016-gyeonggi-do-korea
#18
A Vertès
In its third edition, the Stem Cell and Regenerative Medicine Global Conference (SCRGC) organized by the Global Stem Cell & Regenerative Medicine Acceleration Center (GSRAC) was focused on breaking barriers to accelerate the pace of innovation and development of the regenerative medicine industry. GSRAC is both a think tank and a global network of key opinion leaders from the public and the private sectors. GSRAC was commissioned in 2011 by the Ministry of Health and Welfare (MOHW) of Korea. GSRAC's primary mission is to enable and accelerate the delivery of innovative technologies to patients who are affected by currently untreatable diseases...
October 2016: Drugs of Today
https://www.readbyqxmd.com/read/27910954/mal-lys-prediction-of-lysine-malonylation-sites-in-proteins-integrated-sequence-based-features-with-mrmr-feature-selection
#19
Yan Xu, Ya-Xin Ding, Jun Ding, Ling-Yun Wu, Yu Xue
Lysine malonylation is an important post-translational modification (PTM) in proteins, and has been characterized to be associated with diseases. However, identifying malonyllysine sites still remains to be a great challenge due to the labor-intensive and time-consuming experiments. In view of this situation, the establishment of a useful computational method and the development of an efficient predictor are highly desired. In this study, a predictor Mal-Lys which incorporated residue sequence order information, position-specific amino acid propensity and physicochemical properties was proposed...
December 2, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27910951/molecular-imaging-with-engineered-physiology
#20
Mitul Desai, Adrian L Slusarczyk, Ashley Chapin, Mariya Barch, Alan Jasanoff
In vivo imaging techniques are powerful tools for evaluating biological systems. Relating image signals to precise molecular phenomena can be challenging, however, due to limitations of the existing optical, magnetic and radioactive imaging probe mechanisms. Here we demonstrate a concept for molecular imaging which bypasses the need for conventional imaging agents by perturbing the endogenous multimodal contrast provided by the vasculature. Variants of the calcitonin gene-related peptide artificially activate vasodilation pathways in rat brain and induce contrast changes that are readily measured by optical and magnetic resonance imaging...
December 2, 2016: Nature Communications
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