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https://www.readbyqxmd.com/read/28616821/re-irradiation-after-gross-total-resection-of-recurrent-glioblastoma-spatial-pattern-of-recurrence-and-a-review-of-the-literature-as-a-basis-for-target-volume-definition
#1
Christoph Straube, Greeshma Elpula, Jens Gempt, Julia Gerhardt, Stefanie Bette, Claus Zimmer, Friederike Schmidt-Graf, Bernhard Meyer, Stephanie E Combs
BACKGROUND: Currently, patients with gross total resection (GTR) of recurrent glioblastoma (rGBM) undergo adjuvant chemotherapy or are followed up until progression. Re-irradiation, as one of the most effective treatments in macroscopic rGBM, is withheld in this situation, as uncertainties about the pattern of re-recurrence, the target volume, and also the efficacy of early re-irradiation after GTR exist. METHODS: Imaging and clinical data from 26 consecutive patients with GTR of rGBM were analyzed...
June 14, 2017: Strahlentherapie und Onkologie: Organ der Deutschen Röntgengesellschaft ... [et Al]
https://www.readbyqxmd.com/read/28609482/quickly-identifying-identical-and-closely-related-subjects-in-large-databases-using-genotype-data
#2
Yumi Jin, Alejandro A Schäffer, Stephen T Sherry, Michael Feolo
Genome-wide association studies (GWAS) usually rely on the assumption that different samples are not from closely related individuals. Detection of duplicates and close relatives becomes more difficult both statistically and computationally when one wants to combine datasets that may have been genotyped on different platforms. The dbGaP repository at the National Center of Biotechnology Information (NCBI) contains datasets from hundreds of studies with over one million samples. There are many duplicates and closely related individuals both within and across studies from different submitters...
2017: PloS One
https://www.readbyqxmd.com/read/28607329/influence-of-long-term-physical-activity-on-pcsk9-hdl-ldl-c-and-lp-a-a-prospective-observational-trial
#3
Michael Sponder, Ioana-Alexandra Campean, Daniel Dalos, Michael Emich, Monika Fritzer-Szekeres, Brigitte Litschauer, Jutta Bergler-Klein, Senta Graf, Jeanette Strametz-Juranek
INTRODUCTION    Since PCSK9 (proprotein convertase subtilisin/kexin type 9)-inhibitors were brought to market, the interest in PCSK9 metabolism has increased dramatically.  OBJECTIVES    This study investigates prospectively the influence of long-term physical activity on PCSK9, high and low-density lipoprotein cholesterol (HDL-C/LDL-C) and lipoprotein a [Lp(a)]. PATIENTS AND METHODS    109 subjects were recruited and instructed to increase their sport pensum by 75 minutes/week of vigorous or 150 minutes/week of moderate intensity endurance training (or a mixture) within the calculated training pulse for 8 months...
June 9, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28594169/biosynthesis-of-fluorinated-peptaibols-using-a-site-directed-building-block-incorporation-approach
#4
José Rivera-Chávez, Huzefa A Raja, Tyler N Graf, Joanna E Burdette, Cedric J Pearce, Nicholas H Oberlies
Synthetic biological approaches, such as site-directed biosynthesis, have contributed to the expansion of the chemical space of natural products, making possible the biosynthesis of unnatural metabolites that otherwise would be difficult to access. Such methods may allow the incorporation of fluorine, an atom rarely found in nature, into complex secondary metabolites. Organofluorine compounds and secondary metabolites have both played pivotal roles in the development of drugs; however, their discovery and development are often via nonintersecting tracks...
June 8, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28589354/crispr-cas9-mediated-in-vitro-mutagenesis-in-gc-like-b-cells
#5
Van Trung Chu, Robin Graf, Klaus Rajewsky
The CRISPR/Cas9 technology has developed into a powerful tool for genome editing, both in terms of gene silencing and the insertion of precise mutations. However, the application of CRISPR/Cas9-mediated mutagenesis in primary immune cells, in particular in B cells, is still in its infancy because of the difficulty to deliver the CRISPR/Cas9 system into these cells. Here, we describe a new method to use CRISPR/Cas9 for manipulating genes in germinal center (GC)-like B cells in vitro. We isolated Cas9-expressing B cells from R26-Cas9iGFP/+ mice (expressing Cas9 constitutively from the Rosa26 locus) and mixed them with control B cells...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28587671/integrative-taxonomy-by-molecular-species-delimitation-multi-locus-data-corroborate-a-new-species-of-balkan-drusinae-micro-endemics
#6
Simon Vitecek, Mladen Kučinić, Ana Previšić, Ivana Živić, Katarina Stojanović, Lujza Keresztes, Miklós Bálint, Felicitas Hoppeler, Johann Waringer, Wolfram Graf, Steffen U Pauls
BACKGROUND: Taxonomy offers precise species identification and delimitation and thus provides basic information for biological research, e.g. through assessment of species richness. The importance of molecular taxonomy, i.e., the identification and delimitation of taxa based on molecular markers, has increased in the past decade. Recently developed exploratory tools now allow estimating species-level diversity in multi-locus molecular datasets. RESULTS: Here we use molecular species delimitation tools that either quantify differences in intra- and interspecific variability of loci, or divergence times within and between species, or perform coalescent species tree inference to estimate species-level entities in molecular genetic datasets...
June 6, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28553000/psychosocial-stress-course-of-pregnancy-and-pregnancy-outcomes-in-the-context-of-the-provision-of-sexual-services
#7
Elisabeth Simoes, Johannes Gostomzyk, Sara Yvonne Brucker, Joachim Graf
Introduction There has been very little medical research into pregnancies which occur in the context of prostitution, even though the associated health risks for mother and child, e.g. violence or maternal drug abuse, are well known. The aim of this study was to compile and summarize what is known (inter-)nationally about this topic and identify key points of support as part of a uniform standard of healthcare in pregnancy. Material and Methods A selective search of the literature was done in Pubmed and Livivo/Medpilot and in the databases NIH, Cochrane, DARE, NHSEED and HTA on the factors influencing preterm delivery...
April 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28538419/magnetic-resonance-imaging-evaluation-of-the-labrum-to-predict-acetabular-development-in-developmental-dysplasia-of-the-hip-a-strobe-compliant-study
#8
Yasuhiro Shirai, Kenjiro Wakabayashi, Ikuo Wada, Yoshiaki Tsuboi, Myongsu Ha, Takanobu Otsuka
Recently, more attention has been paid to the role of the acetabular labrum. Therefore, we designed a retrospective cohort study of patients with residual hip dysplasia (RHD) who underwent magnetic resonance imaging (MRI). The objective of this study was to investigate an association between the MRI appearance of the labrum before school age and the natural history of RHD.We retrospectively investigated 45 hips of 40 patients who underwent MRI at about 3 and 4 years of age for RHD and were conservatively followed up with until 6 years of age or older...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28453261/comparison-of-metabolomics-approaches-for-evaluating-the-variability-of-complex-botanical-preparations-green-tea-camellia-sinensis-as-a-case-study
#9
Joshua J Kellogg, Tyler N Graf, Mary F Paine, Jeannine S McCune, Olav M Kvalheim, Nicholas H Oberlies, Nadja B Cech
A challenge that must be addressed when conducting studies with complex natural products is how to evaluate their complexity and variability. Traditional methods of quantifying a single or a small range of metabolites may not capture the full chemical complexity of multiple samples. Different metabolomics approaches were evaluated to discern how they facilitated comparison of the chemical composition of commercial green tea [Camellia sinensis (L.) Kuntze] products, with the goal of capturing the variability of commercially used products and selecting representative products for in vitro or clinical evaluation...
May 26, 2017: Journal of Natural Products
https://www.readbyqxmd.com/read/28451858/biomechanical-in-vitro-comparison-of-radiofrequency-kyphoplasty-and-balloon-kyphoplasty
#10
Gerhard Achatz, Hans-Joachim Riesner, Benedikt Friemert, Raimund Lechner, Nicolas Graf, Hans-Joachim Wilke
PURPOSE: Balloon kyphoplasty (BK) has emerged as a popular method for treating osteoporosis vertebral compression fractures (OVCFs). In response to several shortcomings of BK, alternative methods have been introduced, among which is radiofrequency kyphoplasty (RFK). Biomechanical comparisons of BK and RFK are very sparse. The purpose of this study was to perform a biomechanical study in which BK and RFK are compared. METHODS: Each of the two study groups comprised six specimens prepared from two functional spinal units (FSUs) cut from fresh-frozen cadaveric spines (3 of T9-T11 and 3 of T12-L2)...
April 27, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28445044/highly-oxygenated-multifunctional-compounds-in-%C3%AE-pinene-secondary-organic-aerosol
#11
Xuan Zhang, Andrew T Lambe, Mary Alice Upshur, William A Brooks, Ariana Gray Bé, Regan J Thomson, Franz M Geiger, Jason D Surratt, Zhenfa Zhang, Avram Gold, Stephan Graf, Michael J Cubison, Michael Groessl, John T Jayne, Douglas R Worsnop, Manjula R Canagaratna
Highly oxygenated multifunctional organic compounds (HOMs) originating from biogenic emissions constitute a widespread source of organic aerosols in the pristine atmosphere. However, the molecular forms in which HOMs are present in the condensed phase upon gas-particle partitioning remain unclear. In this study, we show that highly oxygenated molecules that contain multiple peroxide functionalities are readily cationized by the attachment of Na(+) during electrospray ionization operated in the positive ion mode...
June 6, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28400994/pathological-diagnosis-of-gastric-cancers-with-a-novel-computerized-analysis-system
#12
Kosuke Oikawa, Akira Saito, Tomoharu Kiyuna, Hans Peter Graf, Eric Cosatto, Masahiko Kuroda
BACKGROUND: Recent studies of molecular biology have provided great advances for diagnostic molecular pathology. Automated diagnostic systems with computerized scanning for sampled cells in fluids or smears are now widely utilized. Automated analysis of tissue sections is, however, very difficult because they exhibit a complex mixture of overlapping malignant tumor cells, benign host-derived cells, and extracellular materials. Thus, traditional histological diagnosis is still the most powerful method for diagnosis of diseases...
2017: Journal of Pathology Informatics
https://www.readbyqxmd.com/read/28399589/-identification-of-good-practice-projects-in-promoting-physical-activity-methods-pitfalls-and-sampled-outcomes
#13
Annette Henn, Claudia Karger, Katrin Wöhlken, Diana Meier, Ulrike Ungerer-Röhrich, Christine Graf, Alexander Woll
The aim of this paper is to identify and show examples of good practice of public health promotion. For this, uniform quality criteria were worked out under consideration of national and international scientific literature.For the identification of examples of good practice, a comparison of different quality criteria was carried out and combined with each other in a first step. In the following step, examples of good practice were identified after a comprehensive search. The choice of the "good-practice" projects is exemplary and lays no claim to completeness...
March 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28399581/-recommendations-for-physical-activity-and-sedentary-behaviour-for-children-and-adolescents-methods-database-and-rationale
#14
Christine Graf, Nina Ferrari, Ralph Beneke, Wilhelm Bloch, Stefanie Eiser, Benjamin Koch, Wolfgang Lawrenz, Susanne Krug, Kristin Manz, Renate Oberhoffer, Günter Stibbe, Alexander Woll
The benefits of physical activity and a reduction of sedentary behaviour in childhood and adolescence are well established.Based on a quality-assured literature review, the German recommendations were updated. Guidelines for infants, toddlers, children of kindergarten and primary school age and youth are clearly depictedIn general, a higher amount of physical activity is associated with more health benefits. Preschool age children should have 180 min of physical activity daily, and from primary school age on, at least 90 min daily are recommended...
March 2017: Das Gesundheitswesen
https://www.readbyqxmd.com/read/28378458/sensitivity-to-ischaemia-of-single-sympathetic-nerve-fibres-innervating-the-dorsum-of-the-human-foot
#15
W J Z'Graggen, R Solà, N E Graf, J Serra, H Bostock
The aim of this study was to determine whether velocity recovery cycles (VRCs) could detect the effects of ischaemia on sympathetic nerve fibres. VRCs of human sympathetic nerve fibres of the superficial peroneal nerve innervating the dorsum of the foot were recorded by microneurography in 7 healthy volunteers. Sympathetic nerve fibres were identified by studying their response to manoeuvres increasing sympathetic outflow and by measuring activity-dependent slowing at 2 Hz stimulation. VRCs were assessed at rest, during 30 min of induced limb ischaemia and during 20 min of recovery after ischaemia...
April 4, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28341489/automatic-evaluation-of-scan-adequacy-and-dysplasia-metrics-in-2-d-ultrasound-images-of-the-neonatal-hip
#16
Niamul Quader, Antony J Hodgson, Kishore Mulpuri, Emily Schaeffer, Rafeef Abugharbieh
Ultrasound (US) imaging of an infant's hip joint is widely used for early detection of developmental dysplasia of the hip. In current US-based diagnosis of developmental dysplasia of the hip, trained clinicians acquire US images and, if they judge them to be adequate (i.e., to contain relevant hip joint structures), analyze them manually to extract clinically useful dysplasia metrics. However, both the scan adequacy classification and dysplasia metrics extraction steps exhibit significant variability within and between both clinicians and institutions, which can result in significant over- and undertreatment rates...
June 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28333972/evaluation-of-high-resolution-in-vivo-mri-for-longitudinal-analysis-of-endochondral-fracture-healing-in-mice
#17
Melanie Haffner-Luntzer, Fabian Müller-Graf, Romano Matthys, Yvonne Hägele, Verena Fischer, René Jonas, Alireza Abaei, Florian Gebhard, Volker Rasche, Anita Ignatius
Mice are extensively used for experimental bone-healing studies. However, there are few established nondestructive in vivo techniques for longitudinal fracture-healing analysis in mice, including in vivo micro-computed tomography (μCT) and radiography. Importantly, none of the established methods can discriminate between non-mineralized fibrous tissue and cartilage in the soft fracture callus. Therefore, the objective was to establish high-resolution in vivo magnetic resonance imaging (MRI) for the longitudinal assessment of soft callus formation during bone healing in mice...
2017: PloS One
https://www.readbyqxmd.com/read/28316836/comparison-of-progression-rate-of-retinal-pigment-epithelium-loss-in-patients-with-neovascular-age-related-macular-degeneration-treated-with-ranibizumab-and-aflibercept
#18
Juliana Wons, Magdalena A Wirth, Nicole Graf, Matthias D Becker, Stephan Michels
Purpose. Retinal pigment epithelium (RPE) loss in neovascular age-related macular degeneration (nAMD) seem to have a linear progression but might be influenced by the treatment. The purpose of the study is the comparison of RPE loss over three years in patients treated with intravitreal ranibizumab to patients who were switched to aflibercept. Methods. A retrospective analysis with 96 eyes switched to aflibercept was conducted. The progression rate of RPE loss was evaluated in patients who showed atrophy one year prior to switch (n = 17) or on switch date (n = 19)...
2017: Journal of Ophthalmology
https://www.readbyqxmd.com/read/28214447/influence-of-pressures-up-to-50bar-on-two-stage-anaerobic-digestion
#19
Wolfgang Merkle, Katharina Baer, Jonas Lindner, Simon Zielonka, Felix Ortloff, Frank Graf, Thomas Kolb, Thomas Jungbluth, Andreas Lemmer
The concept of pressurized two-stage anaerobic digestion integrates biogas production, purification and pressure boosting within one process. The produced methane-rich biogas can be fed into gas grids with considerably less purification effort. To investigate biogas production under high pressures up to 50bar, a lab scale two-stage anaerobic digestion system was constructed including one continuously operated pressurized methane reactor. This investigation examined the effects of different operating pressures in methane reactor (10, 25, 50bar) on biogas quantity and quality, pH value and process stability...
May 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28164474/traits-across-the-personality-hierarchy-differentially-relate-to-positive-and-negative-affect-evidence-for-the-predictive-validity-of-empirically-derived-meta-traits
#20
Michael P Hengartner, Markus Graf, Marc Schreiber
There is increasing interest in the construct validity of higher-order domains of the Big Five personality traits. A total of 831 persons from the Swiss population completed the International Personality Item Pool and an adaptation of the Positive and Negative Affect Scales. Using Goldberg's bass-ackwards method, we found evidence for the general factor of personality (GFP) and the two meta-traits of positive emotionality (blend of low neuroticism and high extraversion) and constraint (blend of high agreeableness and conscientiousness)...
February 6, 2017: Personality and Mental Health
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