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https://www.readbyqxmd.com/read/28805827/transcriptional-risk-scores-link-gwas-to-eqtls-and-predict-complications-in-crohn-s-disease
#1
Urko M Marigorta, Lee A Denson, Jeffrey S Hyams, Kajari Mondal, Jarod Prince, Thomas D Walters, Anne Griffiths, Joshua D Noe, Wallace V Crandall, Joel R Rosh, David R Mack, Richard Kellermayer, Melvin B Heyman, Susan S Baker, Michael C Stephens, Robert N Baldassano, James F Markowitz, Mi-Ok Kim, Marla C Dubinsky, Judy Cho, Bruce J Aronow, Subra Kugathasan, Greg Gibson
Gene expression profiling can be used to uncover the mechanisms by which loci identified through genome-wide association studies (GWAS) contribute to pathology. Given that most GWAS hits are in putative regulatory regions and transcript abundance is physiologically closer to the phenotype of interest, we hypothesized that summation of risk-allele-associated gene expression, namely a transcriptional risk score (TRS), should provide accurate estimates of disease risk. We integrate summary-level GWAS and expression quantitative trait locus (eQTL) data with RNA-seq data from the RISK study, an inception cohort of pediatric Crohn's disease...
August 14, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28805179/psychosis-as-a-risk-factor-for-suicidal-thoughts-and-behaviors-a-meta-analysis-of-longitudinal-studies
#2
X Huang, K R Fox, J D Ribeiro, J C Franklin
BACKGROUND: Research has long noted higher prevalence rates of suicidal thoughts and behaviors among individuals with psychotic symptoms. Major theories have proposed several explanations to account for this association. Given the differences in the literature regarding the operationalization of psychosis and sample characteristics, a quantitative review is needed to determine to what extent and how psychosis confers risk for suicidality. METHODS: We searched PsycInfo, PubMed, and GoogleScholar for studies published before 1 January 2016...
August 14, 2017: Psychological Medicine
https://www.readbyqxmd.com/read/28805051/proposed-empirical-entropy-and-gibbs-energy-based-on-observations-of-scale-invariance-in-open-non-equilibrium-systems
#3
Adrian F Tuck
Proposed Empirical Entropy and Gibbs Energy Based on Observations of Scale Invariance in Open Non-Equilibrium Systems Abstract There is no widely agreed definition of entropy, and consequently Gibbs energy, in open systems far from equilibrium. One recent approach has sought to formulate an entropy and Gibbs energy based on observed scale invariances in geophysical variables, particularly in atmospheric quantities, including the molecules constituting stratospheric chemistry. The Hamiltonian flux dynamics of energy in macroscopic open non-equilibrium systems maps to energy in equilibrium statistical thermodynamics, and corresponding equivalences of scale invariant variables with other relevant statistical mechanical variables such as entropy, Gibbs energy and 1/(kBoltzmannT) are not just formally analogous but are also mappings...
August 14, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28803867/dynamics-of-eeg-functional-connectivity-during-statistical-learning
#4
Brigitta Tóth, Karolina Janacsek, Ádám Takács, Andrea Kóbor, Zsófia Zavecz, Dezso Nemeth
Statistical learning is a fundamental mechanism of the brain, which extracts and represents regularities of our environment. Statistical learning is crucial in predictive processing, and in the acquisition of perceptual, motor, cognitive, and social skills. Although previous studies have revealed competitive neurocognitive processes underlying statistical learning, the neural communication of the related brain regions (functional connectivity, FC) has not yet been investigated. The present study aimed to fill this gap by investigating FC networks that promote statistical learning in humans...
August 10, 2017: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/28802838/identification-of-immune-correlates-of-protection-in-shigella-infection-by-application-of-machine-learning
#5
Jorge M Arevalillo, Marcelo B Sztein, Karen L Kotloff, Myron M Levine, Jakub K Simon
BACKGROUND: Immunologic correlates of protection are important in vaccine development because they give insight into mechanisms of protection, assist in the identification of promising vaccine candidates, and serve as endpoints in bridging clinical vaccine studies. Our goal is the development of a methodology to identify immunologic correlates of protection using the Shigella challenge as a model. METHODS: The proposed methodology utilizes the Random Forests (RF) machine learning algorithm as well as Classification and Regression Trees (CART) to detect immune markers that predict protection, identify interactions between variables, and define optimal cutoffs...
August 9, 2017: Journal of Biomedical Informatics
https://www.readbyqxmd.com/read/28802404/enabling-faster-go-no-go-decisions-through-secondary-screens-in-anti-mycobacterial-drug-discovery
#6
REVIEW
Raju Mukherjee, Anup Chandra Pal, Mousumi Banerjee
Management of tuberculosis, already a global health emergency, is becoming increasingly challenging with extensive misuse of second line drugs and their inaccessibility to eighty percent of the eligible patients. Rising statistics of antimicrobial resistance underscores the need for a set of completely new and more effective class of compounds with novel mechanisms of action that can be administered in combination to replace and shorten the present intensive six months regimen. In this review, we stress on the importance and the successes of phenotypic screening for discovery of anti-mycobacterial compound and discuss the importance of performing secondary screens and counter screens to get early estimate on compound's potentials for a successful development...
September 2017: Tuberculosis
https://www.readbyqxmd.com/read/28802395/changes-in-pediatric-tracheostomy-tubes-exposed-to-home-dishwashing
#7
David E Smolar, Brian Ho, Steven M Kent, C Anthony Hughes, Donald Mettenburg, Fredrick A Rueggeberg, Michael W Groves
OBJECTIVE: Determine the effects of household dishwashing on Tracheostomy Tube safety. INTRODUCTION: Tracheostomy tubes accumulate biofilms, which may limit their lifespan. Frequent cleaning of the tubes is a method for biofilm prevention. Cleaning practices vary widely. Some families prefer dishwashing of tubes, but its effects are currently unknown. We hypothesize that dishwashing has no significant effect on the physical properties of tracheostomy tubes and can be recommended as a safe way to clean tracheostomy tubes...
September 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28802221/in-vivo-mechanical-behaviour-of-the-anterior-cruciate-ligament-a-study-of-six-daily-and-high-impact-activities
#8
Elisa Roldán, Neil D Reeves, Glen Cooper, Kirstie Andrews
The anterior cruciate ligament (ACL) plays a key role in the stability of the knee joint restricting the rotation and anterior tibial translation. However, there is a lack of knowledge of the in vivo ACL mechanical behaviour during high impact manoeuvres. The motion of 12 young participants with healthy knees was captured while they performed the following activities: walking, running, cross-over cutting, sidestep cutting, jumping and jumping with one leg. The in vivo ACL length and strain were estimated using experimental kinematic data and three degree of freedom (DOF) knee model...
August 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28802030/solenopsis-geminata-tropical-fire-ant-anaphylaxis-among-thai-patients-its-allergens-and-specific-ige-reactivity
#9
Rutcharin Potiwat, Sasipa Tanyaratsrisakul, Santi Maneewatchararangsri, Wiparat Manuyakorn, Ticha Rerkpattanapipat, Yudthana Samung, Chukiat Sirivichayakul, Wanpen Chaicumpa, Raweerat Sitcharungsi
BACKGROUND: Specific IgE against Solenopsis invicta (imported fire ant) remains the current diagnostic tool for allergy to ants worldwide. However, S. invicta may not be the only cause of ant anaphylaxis in Thai patients. OBJECTIVE: To characterize ant species causing anaphylaxis in Thai patients and to test allergenic reactivity to whole body extracts (WBE) of S. geminata (tropical fire ants) in patients with evidence of IgE-mediated ant anaphylaxis. METHODS: Thirty-two patients with ant anaphylaxis were identified...
August 8, 2017: Asian Pacific Journal of Allergy and Immunology
https://www.readbyqxmd.com/read/28801837/blunt-injuries-related-to-equestrian-sports-results-from-an-international-prospective-trauma-database-analysis
#10
Christian D Weber, Anthony R Nguyen, Rolf Lefering, Martijn Hofman, Frank Hildebrand, Hans-Christoph Pape
INTRODUCTION: The objective of this study was to investigate the nature, management, and outcome of major injuries related to equestrian sports and to define the at-risk groups for serious and life-threatening injuries. METHODS: We analyzed demographic, pre-hospital, clinical, and outcome data from an international population-based prospective trauma database (TraumaRegister DGU®). Patients with major injuries (Injury Severity Score [ISS] ≥9 points) related to equestrian sports activities were included (January 1, 1993, to December 31, 2012)...
August 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28801826/brain-activity-changes-in-somatosensory-and-emotion-related-areas-with-medial-patellofemoral-ligament-deficiency
#11
Masaru Kadowaki, Taku Tadenuma, Nobuyuki Kumahashi, Yuji Uchio
BACKGROUND: Patellar instability with medial patellofemoral ligament (MPFL) deficiency is a common sports injury among young people. Although nonoperative and surgical treatment can provide stability of the patella, patients often have anxiety related to the knee. We speculate that neural dysfunction may be related to anxiety in these patients; however, the mechanism in the brain that generates this anxiety remains unknown. QUESTIONS/PURPOSES: (1) How does brain activity in patients with MPFL deficiency change in the areas related to somatic sensation against lateral shift of the patella? (2) How does patella instability, which can lead to continuous fear or apprehension for dislocation, influence brain activity in the areas related to emotion? METHODS: Nineteen patients with MPFL deficiency underwent surgical reconstruction in our hospital from April 2012 to March 2014...
August 11, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28801740/a-statistical-classifier-to-support-diagnose-meningitis-in-less-developed-areas-of-brazil
#12
Viviane-Maria Lélis, Eduardo Guzmán, María-Victoria Belmonte
This paper describes the development of statistical classifiers to help diagnose meningococcal meningitis, i.e. the most sever, infectious and deadliest type of this disease. The goal is to find a mechanism able to determine whether a patient has this type of meningitis from a set of symptoms that can be directly observed in the earliest stages of this pathology. Currently, in Brazil, a country that is heavily affected by meningitis, all suspected cases require immediate hospitalization and the beginning of a treatment with invasive tests and medicines...
August 11, 2017: Journal of Medical Systems
https://www.readbyqxmd.com/read/28801221/the-aminoacyl-trna-synthetases-had-only-a-marginal-role-in-the-origin-of-the-organization-of-the-genetic-code-evidence-in-favor-of-the-coevolution-theory
#13
Massimo Di Giulio
The coevolution theory of the origin of the genetic code suggests that the organization of the genetic code coevolved with the biosynthetic relationships between amino acids. The mechanism that allowed this coevolution was based on tRNA-like molecules on which - this theory - would postulate the biosynthetic transformations between amino acids to have occurred. This mechanism makes a prediction on how the role conducted by the aminoacyl-tRNA synthetases (ARSs), in the origin of the genetic code, should have been...
August 9, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28801176/caffeine-use-in-the-neonatal-intensive-care-unit
#14
REVIEW
Jalal M Abu-Shaweesh, Richard J Martin
Caffeine is the most frequently used medication in the neonatal intensive care unit. It is used for the prevention and treatment of apnea, although this has been associated with lower incidence of bronchopulmonary dysplasia (BPD) and patent ductus arteriosus as well as intact survival at 18-21 months of life. Although neurodevelopmental advantage was no longer statistically significant at age 5 years, caffeine was associated with sustained improvement in co-ordination and less gross motor impairment than placebo...
August 8, 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28801138/cadmium-exposure-in-newborn-rats-ovary-induces-developmental-disorders-of-primordial-follicles-and-the-differential-expression-of-scf-c-kit-gene
#15
Wenchang Zhang, Tingting Wu, Chenyun Zhang, Lingfeng Luo, Meimei Xie, Huiling Huang
Since the 1990s, the rising problem that gonad reproductive toxicity on adult female after exposing to cadmium (Cd), an environmental endocrine disruptor, has attracted high attention at home and abroad,and was systematically studied. Our research focuses on a further problem is that early cadmium exposure (during birth to before puberty) impact on development and function of ovarian cells and its possible mechanism. Our research focuses on the changes of ovarian cells growth and development after the newborn rat ovaries with cadmium exposure in vitro, and different expression of ovarian cells development-related factors, SCF/c-kit and changes of their DNA methylation status...
August 8, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28800707/radiographic-results-and-return-to-activity-after-sesamoidectomy-for-fracture
#16
Justin M Kane, James W Brodsky, Yahya Daoud
BACKGROUND: Limited data are available comparing the results of lateral sesamoidectomy and medial sesamoidectomy for the treatment of fractures recalcitrant to nonoperative treatment interventions. The hypothesis of this study was that sesamoidectomy for either lateral or medial sesamoid fractures would not change radiographic alignment of the first ray given the use of identical reconstruction of the plantar plate, intersesamoid ligament, and plantar ligament complex at the time of surgery...
August 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28800604/the-scaling-of-crime-concentration-in-cities
#17
Marcos Oliveira, Carmelo Bastos-Filho, Ronaldo Menezes
Crime is a major threat to society's well-being but lacks a statistical characterization that could lead to uncovering some of its underlying mechanisms. Evidence of nonlinear scaling of urban indicators in cities, such as wages and serious crime, has motivated the understanding of cities as complex systems-a perspective that offers insights into resources limits and sustainability, but that usually neglects details of the indicators themselves. Notably, since the nineteenth century, criminal activities have been known to occur unevenly within a city; crime concentrates in such way that most of the offenses take place in few regions of the city...
2017: PloS One
https://www.readbyqxmd.com/read/28800237/nanoscale-effects-on-phase-separation
#18
Juan-Pedro Palomares-Baez, Emanuele Panizon, Riccardo Ferrando
Classical nucleation theory predicts that a binary system which is non-miscible in the bulk should become miscible at the nanoscale when lowering its size below a critical size. Here we tackle the problem of miscibility in nanoalloys with a combination of ab-initio and atomistic calculations, developing a statistical-mechanics approach for the free energy cost of forming phase-separated aggregates. We apply it to the controversial case of AuCo nanoalloys. AuCo is non-miscible in the bulk, but a rich variety of nanoparticle configurations, both phase-separated and intermixed, has been obtained experimentally...
August 11, 2017: Nano Letters
https://www.readbyqxmd.com/read/28799938/improvement-of-phosphorus-removal-by-calcium-addition-in-the-iron-electrocoagulation-process
#19
I Mishima, M Hama, Y Tabata, J Nakajima
Small-scale wastewater treatment plants (SWTPs) are widely used as decentralized wastewater treatment systems in sparsely populated areas of Japan. Iron electrolysis, an electrocoagulation technology, is installed in these SWTPs for phosphorus removal. Phosphorus can be removed via the formation of an insoluble compound containing phosphate and iron, such as FePO4; however, it was necessary to determine the conditions under which phosphorus can be effectively and stably removed in actual SWTPs. According to previous studies using iron compounds, improved phosphorus removal was obtained by Ca addition...
August 2017: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/28799774/real-time-surveillance-of-influenza-morbidity-tracking-intensive-care-unit-resource-utilization
#20
Arthur W Baker, Michael B Edmond, Loreen A Herwaldt, Luke F Chen, Sudha Srikantaswamy, Daniel J Sexton
RATIONALE: Existing real-time surveillance of influenza morbidity, based primarily upon time-trended U.S. hospitalization and death data, is inadequate. These surveillance methods do not accurately predict hospital resource requirements or sufficiently capture the public health impact of the current influenza season. OBJECTIVES: To determine the feasibility and potential usefulness of tracking surrogate markers of influenza morbidity among patients hospitalized with influenza...
August 11, 2017: Annals of the American Thoracic Society
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