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Heterogeneity

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https://www.readbyqxmd.com/read/29351714/-prevalence-and-phenomenology-of-psychotic-like-symptoms-in-borderline-personality-disorders-associations-with-suicide-attempts-and-use-of-psychiatric-inpatient-treatment
#1
Katrin Schroeder, Anja Schätzle, Pauline Kowohl, Lisa Leske, Christian G Huber, Ingo Schäfer
BACKGROUND: Psychotic-like symptoms are found in a subgroup of borderline patients (BPD). Reported prevalence is heterogeneous (up to 50% affected). Investigations in Germany have not been conducted so far. Furthermore, the precise phenomenology of the psychotic symptoms and the effects on suicidal behavior and the use of inpatient psychiatric treatment are unclear. OBJECTIVES: The aim of the study was to investigate prevalence rates and phenomenology of psychotic-like symptoms...
January 19, 2018: Psychotherapie, Psychosomatik, Medizinische Psychologie
https://www.readbyqxmd.com/read/29351657/characterization-of-the-spatial-and-temporal-distribution-of-nipah-virus-spillover-events-in-bangladesh-2007-2013
#2
Maria C Cortes, Simon Cauchemez, Noemie Lefrancq, Stephen P Luby, M Jahangir Hossain, Hossain M S Sazzad, Mahmudur Rahman, Peter Daszak, Henrik Salje, Emily S Gurley
Nipah virus is a zoonotic virus, harbored by bats and lethal to humans. Bat to human spillovers occur every winter in Bangladesh. However, there is significant heterogeneity in the number of spillovers detected by district and year that remains unexplained. We analyzed data from all 57 spillovers from 2007-2013 and found that temperature differences explained 36% of the year-to-year variation in the total number of spillovers each winter while distance to surveillance hospitals explained 45% of spatial heterogeneity...
January 17, 2018: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29351642/caregiver-provided-physical-therapy-home-programs-for-children-with-motor-delay-a-scoping-review
#3
Edward James R Gorgon
Background: Caregiver-provided physical therapy home programs (PTHP) play an important role in enhancing motor outcomes in pediatric patient populations. Purpose: This scoping review systematically mapped clinical trials of caregiver-provided PTHP that were aimed at enhancing motor outcomes in children who have or who are at risk for motor delay, with the purpose of (1) describing trial characteristics; (2) assessing methodologic quality, and (3) examining the reporting of caregiver-related components...
January 17, 2018: Physical Therapy
https://www.readbyqxmd.com/read/29351512/physiology-of-astroglia
#4
Alexei Verkhratsky, Maiken Nedergaard
Astrocytes are neural cells of ectodermal, neuroepithelial origin that provide for homeostasis and defense of the central nervous system (CNS). Astrocytes are highly heterogeneous in morphological appearance; they express a multitude of receptors, channels, and membrane transporters. This complement underlies their remarkable adaptive plasticity that defines the functional maintenance of the CNS in development and aging. Astrocytes are tightly integrated into neural networks and act within the context of neural tissue; astrocytes control homeostasis of the CNS at all levels of organization from molecular to the whole organ...
January 1, 2018: Physiological Reviews
https://www.readbyqxmd.com/read/29351495/implementing-prehospital-evidence-based-guidelines-a-systematic-literature-review
#5
Jennifer N Fishe, Remle P Crowe, Rebecca E Cash, Nikiah G Nudell, Christian Martin-Gill, Christopher T Richards
OBJECTIVE: As prehospital research advances, more evidence-based guidelines (EBGs) are implemented into emergency medical services (EMS) practice. However, incomplete or suboptimal prehospital EBG implementation may hinder improvement in patient outcomes. To inform future efforts, this study's objective was to review existing evidence pertaining to prehospital EBG implementation methods. METHODS: This study was a systematic literature review and evaluation following the Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) methodology...
January 19, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29351341/labeling-for-big-data-in-radiation-oncology-the-radiation-oncology-structures-ontology
#6
Jean-Emmanuel Bibault, Eric Zapletal, Bastien Rance, Philippe Giraud, Anita Burgun
PURPOSE: Leveraging Electronic Health Records (EHR) and Oncology Information Systems (OIS) has great potential to generate hypotheses for cancer treatment, since they directly provide medical data on a large scale. In order to gather a significant amount of patients with a high level of clinical details, multicenter studies are necessary. A challenge in creating high quality Big Data studies involving several treatment centers is the lack of semantic interoperability between data sources...
2018: PloS One
https://www.readbyqxmd.com/read/29351331/the-association-between-previous-and-future-severe-exacerbations-of-chronic-obstructive-pulmonary-disease-updating-the-literature-using-robust-statistical-methodology
#7
Mohsen Sadatsafavi, Hui Xie, Mahyar Etminan, Kate Johnson, J Mark FitzGerald
BACKGROUND: There is minimal evidence on the extent to which the occurrence of a severe acute exacerbation of COPD that results in hospitalization affects the subsequent disease course. Previous studies on this topic did not generate causally-interpretable estimates. Our aim was to use corrected methodology to update previously reported estimates of the associations between previous and future exacerbations in these patients. METHODS: Using administrative health data in British Columbia, Canada (1997-2012), we constructed a cohort of patients with at least one severe exacerbation, defined as an episode of inpatient care with the main diagnosis of COPD based on international classification of diseases (ICD) codes...
2018: PloS One
https://www.readbyqxmd.com/read/29351303/automated-inverse-optimization-facilitates-lower-doses-to-normal-tissue-in-pancreatic-stereotactic-body-radiotherapy
#8
Ivaylo B Mihaylov, Eric A Mellon, Raphael Yechieli, Lorraine Portelance
PURPOSE: Inverse planning is trial-and-error iterative process. This work introduces a fully automated inverse optimization approach, where the treatment plan is closely tailored to the unique patient anatomy. The auto-optimization is applied to pancreatic stereotactic body radiotherapy (SBRT). MATERIALS AND METHODS: The automation is based on stepwise reduction of dose-volume histograms (DVHs). Five uniformly spaced points, from 1% to 70% of the organ at risk (OAR) volumes, are used...
2018: PloS One
https://www.readbyqxmd.com/read/29351290/land-use-change-in-oil-palm-dominated-tropical-landscapes-an-agent-based-model-to-explore-ecological-and-socio-economic-trade-offs
#9
Claudia Dislich, Elisabeth Hettig, Jan Salecker, Johannes Heinonen, Jann Lay, Katrin M Meyer, Kerstin Wiegand, Suria Tarigan
Land-use changes have dramatically transformed tropical landscapes. We describe an ecological-economic land-use change model as an integrated, exploratory tool used to analyze how tropical land-use change affects ecological and socio-economic functions. The model analysis seeks to determine what kind of landscape mosaic can improve the ensemble of ecosystem functioning, biodiversity, and economic benefit based on the synergies and trade-offs that we have to account for. More specifically, (1) how do specific ecosystem functions, such as carbon storage, and economic functions, such as household consumption, relate to each other? (2) How do external factors, such as the output prices of crops, affect these relationships? (3) How do these relationships change when production inefficiency differs between smallholder farmers and learning is incorporated? We initialize the ecological-economic model with artificially generated land-use maps parameterized to our study region...
2018: PloS One
https://www.readbyqxmd.com/read/29351131/quality-of-life-on-long-term-parenteral-nutrition-can-it-be-an-indication-for-intestinal-transplantation
#10
Yaron Avitzur, Mar Miserachs
PURPOSE OF REVIEW: Long-term outcomes in patients with intestinal failure and following intestine transplantation have improved significantly over the last decade. With these improvements, listing criteria for intestine transplantation are reevaluated and the role of quality of life (QoL) in patients' outcome is increasingly studied and emphasized. Here, we review the recent literature on QoL before and after intestine transplantation and discuss whether QoL should be considered as a listing criterion for intestine transplantation...
January 17, 2018: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29351108/neuroimaging-in-neurodevelopmental-disorders-focus-on-resting-state-fmri-analysis-of-intrinsic-functional-brain-connectivity
#11
Allison Jack
PURPOSE OF REVIEW: Resting-state fMRI assessment of instrinsic functional brain connectivity (rs-fcMRI) in autism spectrum disorders (ASD) allows assessment of participants with a wide range of functioning levels, and collection of multisite databases that facilitate large-scale analysis. These heterogeneous multisite data present both promise and methodological challenge. Herein, we provide an overview of recent (1 October 2016-1 November 2017) empirical research on ASD rs-fcMRI, focusing on work that helps clarify how best to leverage the power of these data...
January 17, 2018: Current Opinion in Neurology
https://www.readbyqxmd.com/read/29351102/fatal-sickling-triggered-by-massive-foreign-particle-embolism-a-case-report-of-unrecognized-indwelling-venous-catheter-drug-abuse-in-sickle-cell-disease
#12
Christopher A Febres-Aldana, Lydia Hernandez Howard
Sickle cell disease (SCD) manifests itself with vaso-occlusive episodes leading to infarction. Placement of intravascular catheters provides a useful route for management of pain crises as well as other complications. However, catheter misuse is a commonly unrecognized problem, which can have lethal consequences. We present a case of fatal splenic sequestration/hyperhemolysis secondary to foreign body pulmonary and systemic embolization due to intravenous administration of hydromorphone pills in a young woman with SCD...
January 18, 2018: American Journal of Forensic Medicine and Pathology
https://www.readbyqxmd.com/read/29351095/the-effect-of-ketorolac-on-thoracolumbar-posterolateral-fusion-a-systematic-review-and-meta-analysis
#13
Jesse Li, Remi M Ajiboye, Michael H Orden, Akshay Sharma, Austin Drysch, Sina Pourtaheri
STUDY DESIGN: Systematic review and meta-analysis. OBJECTIVE: The purpose of this study was to evaluate the effect of postoperative ketorolac administration (ie, dosage and duration of use) on pseudarthrosis following thoracolumbar posterolateral spinal fusions. SUMMARY OF BACKGROUND DATA: Ketorolac is a nonsteroidal anti-inflammatory drug often administered for pain control after spine surgery. The main concern with ketorolac is the risk of pseudarthrosis following fusion...
January 18, 2018: Clinical Spine Surgery
https://www.readbyqxmd.com/read/29351053/patient-variability-seldom-assessed-in-cost-effectiveness-studies
#14
Tara A Lavelle, David M Kent, Christine M Lundquist, Teja Thorat, Joshua T Cohen, John B Wong, Natalia Olchanski, Peter J Neumann
BACKGROUND: Cost-effectiveness analysis (CEA) estimates can vary substantially across patient subgroups when patient characteristics influence preferences, outcome risks, treatment effectiveness, life expectancy, or associated costs. However, no systematic review has reported the frequency of subgroup analysis in CEA, what type of heterogeneity they address, and how often heterogeneity influences whether cost-effectiveness ratios exceed or fall below conventional thresholds. METHODS: We reviewed the CEA literature cataloged in the Tufts Medical Center CEA Registry, a repository describing cost-utility analyses published through 2016...
January 1, 2018: Medical Decision Making: An International Journal of the Society for Medical Decision Making
https://www.readbyqxmd.com/read/29350874/diversification-of-human-nk-cells-lessons-from-deep-profiling
#15
REVIEW
Aaron J Wilk, Catherine A Blish
NK cells are innate lymphocytes with important roles in immunoregulation, immunosurveillance, and cytokine production. Originally defined on the functional basis of their "natural" ability to lyse tumor targets and thought to be a relatively homogeneous group of lymphocytes, NK cells possess a remarkable degree of phenotypic and functional diversity due to the combinatorial expression of an array of activating and inhibitory receptors. Diversification of NK cells is multifaceted: mechanisms of NK cell education that promote self-tolerance result in a heterogeneous repertoire that further diversifies upon encounters with viral pathogens...
January 19, 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29350826/dispersal-and-population-state-of-an-endangered-island-lizard-following-a-conservation-translocation
#16
Nicole F Angeli, Ian F Lundgren, Clayton G Pollock, Zandy M Hillis-Starr, Lee A Fitzgerald
Population size is widely used as a unit of ecological analysis, yet to estimate population size requires accounting for observed and latent heterogeneity influencing dispersion of individuals across landscapes. In newly established populations, such as when animals are translocated for conservation, dispersal and availability of resources influence patterns of abundance. We developed a process to estimate population size using N-mixture models and spatial models for newly established and dispersing populations...
January 19, 2018: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/29350777/the-pathology-of-lumbosacral-lipomas-macroscopic-and-microscopic-disparity-have-implications-for-embryogenesis-and-mode-of-clinical-deterioration
#17
Victoria Jones, Victoria Wykes, Nicki Cohen, Dominic Thompson, Thomas S Jacques
AIMS: Lumbosacral lipomas (LSL) are congenital disorders of the terminal spinal cord region that have the potential to cause significant spinal cord dysfunction in children. They are of unknown embryogenesis with variable clinical presentation and natural history. It is unclear whether the spinal cord dysfunction reflects a primary developmental dysplasia or whether it occurs secondarily to mechanical traction (spinal cord tethering) with growth. Whilst different anatomical subtypes are recognised and classified according to radiological criteria, these subtypes correlate poorly with clinical prognosis...
January 19, 2018: Histopathology
https://www.readbyqxmd.com/read/29350766/untangling-the-complexity-of-limb-girdle-muscular-dystrophies
#18
REVIEW
Teerin Liewluck, Margherita Milone
Limb-girdle muscular dystrophies (LGMD) are a group of genetically heterogeneous, autosomal inherited muscular dystrophies with childhood-to-adult onset, manifesting with hip and shoulder girdle muscle weakness. When the term LGMD was first conceptualized in 1954, it was thought to be a single entity. Currently, there are 8 autosomal dominant (LGMD1A-1H) and 26 autosomal recessive (LGMD2A-2Z) variants according to the Online Mendelian Inheritance in Man database. In addition, there are other genetically-identified muscular dystrophies with a LGMD phenotype not yet classified as LGMD...
January 19, 2018: Muscle & Nerve
https://www.readbyqxmd.com/read/29350725/effects-of-chemically-heterogeneous-nanoparticles-on-polymer-dynamics-insights-from-molecular-dynamics-simulations
#19
Zijian Zheng, Fanzhu Li, Jun Liu, Raffaele Pastore, Guido Raos, Youping Wu, Liqun Zhang
The dispersion of solid nanoparticles within polymeric materials is widely used to enhance their performance. Many scientific and technological aspects of the resulting polymer nanocomposites have been studied, but the role of the structural and chemical heterogeneity of the nanoparticles has just started to be appreciated. For example, simulations of polymer films on planar heterogeneous surfaces revealed unexpected, non-monotonic activation energy to diffusion on varying the surface composition. Motivated by these intriguing results, here we simulate via molecular dynamics a different, fully three-dimensional system, in which the heterogeneous nanoparticles are incorporated in a polymer melt...
January 19, 2018: Soft Matter
https://www.readbyqxmd.com/read/29350612/the-effects-of-betaine-on-the-nuclear-fractal-dimension-chromatin-texture-and-proliferative-activity-in-hepatocytes-in-mouse-model-of-nonalcoholic-fatty-liver-disease
#20
Milena Vesković, Milica Labudović-Borović, Ivan Zaletel, Jelena Rakočević, Dušan Mladenović, Bojan Jorgačević, Danijela Vučević, Tatjana Radosavljević
The effects of betaine on hepatocytes chromatin architecture changes were examined by using fractal and gray-level co-occurrence matrix (GLCM) analysis in methionine/choline-deficient (MCD) diet-induced, nonalcoholic fatty liver disease (NAFLD). Male C57BL/6 mice were divided into groups: (1) Control: standard diet; (2) BET: standard diet and betaine supplementation through drinking water (solution 1.5%); (3) MCD group: MCD diet for 6 weeks; (4) MCD+BET: fed with MCD diet + betaine for 6 weeks. Liver tissue was collected for histopathology, immunohistochemistry, and determination of fractal dimension and GLCM parameters...
January 19, 2018: Microscopy and Microanalysis
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