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https://www.readbyqxmd.com/read/28214606/payload-release-by-liposome-burst-thermal-collapse-of-microgels-induces-satellite-destruction
#1
Alexander Yaroslavov, Irina Panova, Andrey Sybachin, Vasiliy Spiridonov, Alexander Zezin, Olga Mergel, Arjan Gelissen, Rahul Tiwari, Felix Plamper, Walter Richtering, Fredric Menger
No abstract text is available yet for this article.
February 15, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28213283/pyrrolo-3-2-6-7-cyclohepta-1-2-b-pyridines-with-potent-photo-antiproliferative-activity
#2
Virginia Spanò, Daniele Giallombardo, Vincenzo Cilibrasi, Barbara Parrino, Anna Carbone, Alessandra Montalbano, Ilaria Frasson, Alessia Salvador, Sara N Richter, Filippo Doria, Mauro Freccero, Stella Cascioferro, Patrizia Diana, Girolamo Cirrincione, Paola Barraja
Pyrrolo[3',2':6,7]cyclohepta[1,2-b]pyridines were synthesized as a new class of tricyclic system in which the pyridine ring is annelated to a cycloheptapyrrole scaffold, with the aim of obtaining new photosensitizing agents with improved antiproliferative activity and lower undesired toxic effects. A versatile synthetic pathway was approached, which allowed the isolation of derivatives of the title ring system with a good substitution pattern on the pyrrole moiety. Photobiological studies revealed that the majority of the new compounds showed a potent cytotoxic effect upon photoactivation with light of the proper wavelength, especially when decorated with a 2-ethoxycabonyl group and a N-benzyl substituted moiety, with EC50 values reaching the submicromolar level...
February 7, 2017: European Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/28210491/film-morphology-evolution-during-solvent-vapor-annealing-of-highly-efficient-small-molecule-donor-acceptor-blends
#3
Sebastian Engmann, Hyun Wook Ro, Andrew Herzing, Chad R Snyder, Lee J Richter, Paul B Geraghty, David J Jones
Solution-processable small molecule photovoltaics based on the novel molecular donor, benzodithiophene terthiophene rhodanine (BTR), recently have shown maximum power conversion efficiencies above 8 % for active layer thicknesses up to 400 nm, using post process solvent vapor annealing (SVA) with tetrahydrofuran (THF). Here we report an in-situ study on the morphology evolution during SVA using the moderate solvent THF and the good solvent chloroform (CF). The combination of real-time grazing incidence X-ray diffraction (GIXD) and grazing incidence small angle X-ray scattering (GISAXS) allows us to draw a complete picture of the evolution of crystallinity and phase purity during post process annealing...
October 28, 2016: Journal of Materials Chemistry. A, Materials for Energy and Sustainability
https://www.readbyqxmd.com/read/28209597/athletic-groin-pain-part-2-a-prospective-cohort-study-on-the-biomechanical-evaluation-of-change-of-direction-identifies-three-clusters-of-movement-patterns
#4
A Franklyn-Miller, C Richter, E King, S Gore, K Moran, S Strike, E C Falvey
BACKGROUND: Athletic groin pain (AGP) is prevalent in sports involving repeated accelerations, decelerations, kicking and change-of-direction movements. Clinical and radiological examinations lack the ability to assess pathomechanics of AGP, but three-dimensional biomechanical movement analysis may be an important innovation. AIM: The primary aim was to describe and analyse movements used by patients with AGP during a maximum effort change-of-direction task. The secondary aim was to determine if specific anatomical diagnoses were related to a distinct movement strategy...
March 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28209131/support-for-the-feasibility-of-the-ages-and-stages-questionnaire-as-a-developmental-screening-tool-a-cross-sectional-study-of-south-african-and-zambian-children-aged-2-60-months
#5
Alastair van Heerden, Celia Hsiao, Beatrice Matafwali, Julia Louw, Linda Richter
BACKGROUND: There is a growing global acknowledgement that improving child survival rates is no longer sufficient. Emphasis is shifting to the improvement of health and developmental trajectories in early childhood. Screening and measurement of these trajectories in low and middle income countries is difficult, however, as they currently rely on developmental tests standardised among populations of children growing up in resource rich environments. METHODS: This paper presents a comparison of one such tool adapted for use with children living in Southern Africa to children from the United States, Norway, Korea and Spain...
February 16, 2017: BMC Pediatrics
https://www.readbyqxmd.com/read/28208205/-social-determinants-of-subjective-health-life-satisfaction-and-absence-from-school-due-to-illness-among-adolescents-first-results-of-the-german-national-educational-panel-study-neps
#6
Kristina Heilmann, Janina Bräsen, Max Herke, Matthias Richter, Katharina Rathmann
The aim of this study is to examine the impact of social determinants on subjective health, life satisfaction and absence from school due to illness among adolescents in secondary schools, by using data from the German National Educational Panel Study (NEPS). Data was obtained from the National Educational Panel Study (NEPS). The sample included (n=5 790) 6(th) grade pupils in regular schools in 2011 (Starting Cohort 3, Wave 2). The socioeconomic background of adolescents was measured by pupils' school type as well as household income and parental education level...
February 16, 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28208063/white-matter-lesions-and-the-cholinergic-deficit-in-aging-and-mild-cognitive-impairment
#7
Nils Richter, Anne Michel, Oezguer A Onur, Lutz Kracht, Markus Dietlein, Marc Tittgemeyer, Bernd Neumaier, Gereon R Fink, Juraj Kukolja
In Alzheimer's disease (AD), white matter lesions (WMLs) are associated with an increased risk of progression from mild cognitive impairment (MCI) to dementia, while memory deficits have, at least in part, been linked to a cholinergic deficit. We investigated the relationship between WML load assessed with the Scheltens scale, cerebral acetylcholinesterase (AChE) activity measured with [(11)C]N-methyl-4-piperidyl acetate PET, and neuropsychological performance in 17 patients with MCI due to AD and 18 cognitively normal older participants...
January 18, 2017: Neurobiology of Aging
https://www.readbyqxmd.com/read/28203174/richter-s-syndrome-with-hypercalcemia-induced-by-tumor-associated-production-of-parathyroid-hormone-related-peptide
#8
Naoki Watanabe, Hajime Yasuda, Soji Morishita, Yasuo Aota, Junichi Tomomatsu, Masaru Tanaka, Akimichi Ohsaka, Norio Komatsu
Humoral hypercalcemia due to parathyroid hormone-related peptide (PTHrP) elevation is a well-known complication of various malignancies, but the situation is rare concerning hematological malignancies except for adult T-cell leukemia/lymphoma. We report a case of Richter's syndrome with humoral hypercalcemia, and demonstrate by reverse transcription polymerase chain reaction (RT-PCR) that peripheral blood PTHrP levels were 2,500-fold higher compared to healthy controls. PTHrP production by tumor cells in chronic lymphocytic leukemia (CLL) and Richter's syndrome has been previously demonstrated by nonquantitative methods such as immunohistochemistry and northern blot analysis, but this is the first report using the RT-PCR method...
January 2017: Case Reports in Oncology
https://www.readbyqxmd.com/read/28202439/variable-reliability-of-surrogate-measures-of-insulin-sensitivity-after-roux-en-y-gastric-bypass
#9
Kirstine N Bojsen-Moller, Carsten Dirksen, Maria S Svane, Nils B Jørgensen, Jens J Holst, Erik A Richter, Sten Madsbad
Roux-en-Y gastric bypass (RYGB) induces weight loss and improves insulin sensitivity when evaluated by the hyperinsulinemic-euglycemic clamp (HEC). Surrogate indices of insulin sensitivity calculated from insulin and glucose concentrations at fasting or after an oral glucose tolerance test (OGTT) are frequently used, but have not been validated after RYGB. Our aim was to evaluate whether surrogate indices reliably estimate changes in insulin sensitivity after RYGB. Four fasting (inverse-HOMA-IR, HOMA2-%S, QUICKI, revised-QUICKI) and three OGTT-derived surrogates (Matsuda, Gutt, OGIS) were compared with HEC-estimated peripheral insulin sensitivity (Rd or Rd/I, depending on how the index was originally validated) and the tracer-determined hepatic insulin sensitivity index (HISI) in patients with preoperative type 2 diabetes (n=10) and normal glucose tolerance (n=10) 1 week, 3 months and 1 year postoperatively...
February 15, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28194665/performance-improvement-quality-is-in-the-cards
#10
EDITORIAL
Emily J Campbell, James M Richter
No abstract text is available yet for this article.
February 13, 2017: Digestive Diseases and Sciences
https://www.readbyqxmd.com/read/28194579/prediction-of-tissue-to-plasma-ratios-of-basic-compounds-in-mice
#11
Prashant B Nigade, Jayasagar Gundu, K Sreedhara Pai, Kumar V S Nemmani
BACKGROUND: Majority of reported studies so far developed correlation regression equations using the rat muscle-to-plasma drug concentration ratio (Kp-muscle) to predict tissue-to-plasma drug concentration ratios (Kp-tissues). Use of regression equations derived from rat Kp-muscle may not be ideal to predict the mice tissue-Kps as there are species differences. OBJECTIVES: (i) To develop the linear regression equations using mouse tissue-Kps; (ii) to assess the correlation between organ blood flow and/or organ weight with tissue-Kps and (iii) compare the observed tissue-Kps from mice with corresponding predicted tissue-Kps using Richter's rat-Kp specific equations...
February 13, 2017: European Journal of Drug Metabolism and Pharmacokinetics
https://www.readbyqxmd.com/read/28193213/a-case-report-of-spontaneous-umbilical-enterocutaneous-fistula-resulting-from-an-incarcerated-richter-s-hernia-with-a-brief-literature-review
#12
Wei Chen, Lei Liu, Hui Huang, Mianxu Jiang, Tao Zhang
BACKGROUND: Richter's hernia is a high-risk ischaemic gastrointestinal disorder that is typically diagnosed in a delayed manner due to a lack of obvious symptoms. Spontaneous umbilical enterocutaneous fistula (ECF) resulting from an incarcerated Richter's hernia is extremely rare. CASE PRESENTATION: A 62-year-old female presented with a chief complaint of recurrent umbilical region infection for the preceding 20 months with no symptoms of ileus. Preoperative CT and fistulography revealed an incarcerated Richter's hernia complicated by an ECF...
February 13, 2017: BMC Surgery
https://www.readbyqxmd.com/read/28192842/-keratoplasty-in-children-and-adolescents
#13
S J Lang, C Richter, O Richter, D Böhringer, G Geerling, T Reinhard
Background The conditions for long-term graft survival in infants and children are unfavorable, due to the different immunological features, the impaired clinical examination and the reduced compliance and treatment adherence. However, penetrating keratoplasty is often the only option to prevent amblyopia and there may be no alternative. We examined the different indications, graft survival and complications in two specialised centres. Material and Methods We identified all patients who were under the age of 18 years at the time of their penetrating keratoplasty...
February 13, 2017: Klinische Monatsblätter Für Augenheilkunde
https://www.readbyqxmd.com/read/28192083/anatomical-and-spiral-wave-reentry-in-a-simplified-model-for-atrial-electrophysiology
#14
Yvonne Richter, Pedro G Lind, Gunnar Seemann, Philipp Maass
For modeling the propagation of action potentials in the human atria, various models have been developed in the past, which take into account in detail the influence of the numerous ionic currents flowing through the cell membrane. Aiming at a simplified description, the Bueno-Orovio-Cherry-Fenton (BOCF) model for electric wave propagation in the ventricle has been adapted recently to atrial physiology. Here, we study this adapted BOCF (aBOCF) model with respect to its capability to accurately generate spatio-temporal excitation patterns found in anatomical and spiral wave reentry...
February 10, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28191372/richter-transformation-of-chronic-lymphocytic-leukemia-a-review-of-fluorodeoxyglucose-positron-emission-tomography-computed-tomography-and-molecular-diagnostics
#15
REVIEW
Faiq Shaikh, Amna Janjua, Frederick Van Gestel, Adeel Ahmad
Chronic lymphocytic leukemia (CLL) is a low-grade B-cell proliferative disease with a generally indolent course. In a few cases, it undergoes transformation and becomes a more aggressive malignancy, such as diffuse large B-cell lymphoma (DLBCL). This process, which is called Richter transformation (RT), is often detected too late and is associated with a poor prognosis. There are multiple molecular diagnostic approaches to detect RT in preexisting CLL. Metabolic imaging using 18-fluorine fluorodeoxyglucose positron emission tomography-computed tomography (18F-FDG PET/CT) can be a very useful tool for early detection of RT and which can hence allow for timely intervention, thereby improving the patient's chances of survival...
January 9, 2017: Curēus
https://www.readbyqxmd.com/read/28191009/defective-il-23-il-17-axis-protects-p47phox-mice-from-colon-cancer
#16
Cornelia Richter, Martina Herrero San Juan, Benno Weigmann, Dominik Bergis, Katrin Dauber, Michael H Muders, Gustavo B Baretton, Josef Martin Pfeilschifter, Halvard Bonig, Sebastian Brenner, Heinfried H Radeke
In the colon, a sophisticated balance between immune reaction and tolerance is absolutely required. Dysfunction may lead to pathologic phenotypes ranging from chronic inflammatory processes to cancer development. Two prominent modulators of colon inflammation are represented by the closely related cytokines interleukin (IL)-12 and IL-23, which initiate adaptive Th1 and Th17 immune responses, respectively. In this study, we investigated the impact of the NADPH oxidase protein p47phox, which negatively regulates IL-12 in dendritic cells, on colon cancer development in a colitis-associated colon cancer model...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28190502/a-systematic-worldwide-review-of-the-direct-monetary-losses-in-cattle-due-to-bovine-viral-diarrhoea-virus-infection
#17
Veronika Richter, Karin Lebl, Walter Baumgartner, Walter Obritzhauser, Annemarie Käsbohrer, Beate Pinior
Bovine viral diarrhoea virus (BVDV) is an important infectious agent of cattle worldwide that affects herd productivity and reproduction. In this systematic review of the impact of BVDV, studies were analysed with a particular focus on the monetary implications and types of direct losses, the initial infection status of herds, production systems, time periods of assessment, calculation level, study types and whether or not country-specific assessments were published. A linear mixed model was applied to analyse factors that influence the level of monetary direct losses due to BVDV infection...
February 2017: Veterinary Journal
https://www.readbyqxmd.com/read/28188485/feasibility-of-laser-guided-percutaneous-pedicle-screw-placement-in-the-lumbar-spine-using-a-hybrid-or
#18
P H Richter, F Gebhard, M Salameh, K Schuetze, M Kraus
PURPOSE: Innovations in intraoperative imaging lead to major changes in orthopaedic surgery. In our setting, a 3D flat-panel c-arm (Artis zeego) is mounted on a robotic arm offering an integrated aiming tool (Syngo iGuide). Our aim was to investigate the feasibility of Syngo iGuide for pedicle screw placement in comparison with fluoroscopic screw implantation. METHODS: In 10 lumbar models, 100 screws were implanted. In 5 models, a standard fluoroscopic technique was used...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28186408/functional-microgels-and-microgel-systems
#19
Felix A Plamper, Walter Richtering
Microgels are macromolecular networks swollen by the solvent in which they are dissolved. They are unique systems that are distinctly different from common colloids, such as, e.g., rigid nanoparticles, flexible macromolecules, micelles, or vesicles. The size of the microgel networks is in the range of several micrometers down to nanometers (then sometimes called "nanogels"). In a collapsed state, they might resemble hard colloids but they can still contain significant amounts of solvent. When swollen, they are soft and have a fuzzy surface with dangling chains...
February 10, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/28185672/cariprazine-versus-risperidone-monotherapy-for-treatment-of-predominant-negative-symptoms-in-patients-with-schizophrenia-a-randomised-double-blind-controlled-trial
#20
György Németh, István Laszlovszky, Pál Czobor, Erzsébet Szalai, Balázs Szatmári, Judit Harsányi, Ágota Barabássy, Marc Debelle, Suresh Durgam, István Bitter, Stephen Marder, W Wolfgang Fleischhacker
BACKGROUND: Although predominant negative symptoms of schizophrenia can be severe enough to cause persistent impairment, effective treatment options are lacking. We aimed to assess the new generation antipsychotic cariprazine in adult patients with predominant negative symptoms. METHODS: In this randomised, double-blind, phase 3b trial, we enrolled adults aged 18-65 years with long-term (>2 year), stable schizophrenia and predominant negative symptoms (>6 months) at 66 study centres (mainly hospitals and university clinics, with a small number of private practices) in 11 European countries...
February 6, 2017: Lancet
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