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https://www.readbyqxmd.com/read/28538622/towards-precision-medicine-accurate-predictive-modeling-of-infectious-complications-in-combat-casualties
#1
Christopher J Dente, Matthew Bradley, Seth Schobel, Beverly Gaucher, Timothy Buchman, Allan D Kirk, Eric Elster
BACKGROUND: The biomarker profile of trauma patients may allow for the creation of models to assist bedside decision making & prediction of complications. We sought to determine the utility of modeling in the prediction of bacteremia & pneumonia in combat casualties. METHODS: This is a prospective, observational trial of patients with complex wounds treated at Walter Reed National Military Medical Center (2007-2012). Tissue, serum and wound effluent samples were collected during operative interventions until wound closure...
May 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28533899/genetic-diversity-and-structure-of-an-endangered-desert-shrub-and-the-implications-for-conservation
#2
Zhihao Su, Bryce A Richardson, Li Zhuo, Xiaolong Jiang, Wenjun Li, Xiaoshan Kang
Population genetic information can provide valuable insight for the conservation and management of threatened and endangered plant species. Tamarix taklamakanensis is an endangered shrub endemic to arid basins of northwestern China. This species serves to stabilize soils in this region, but has seen substantial loss in its abundance due to depletion of ground water. The populations of this species have become small and fragmented, warranting conservation. Seven microsatellite loci were used to assess the genetic diversity and structure of 15 populations in the Tarim Basin, China...
May 2017: AoB Plants
https://www.readbyqxmd.com/read/28533084/gene-flow-and-genetic-drift-contribute-to-high-genetic-diversity-with-low-phylogeographical-structure-in-european-hoopoes-upupa-epops
#3
Erjia Wang, Rien E Van Wijk, Markus Santhosh Braun, Michael Wink
The Hoopoe (Upupa epops epops) breeds widely in Eurasia and most populations migrate to Africa during the boreal winter. To date, data regarding its phylogeography in Europe are missing. In this study, we investigated the phylogeography and population genetics of Hoopoes by means of mitochondrial DNA (mtDNA) sequencing as well as microsatellite genotyping. Our analyses revealed 32 haplotypes in the cytochrome c oxidase subunit I (COI) (269 individuals) and 50 haplotypes in cytochrome b (cyt b) (233 individuals)...
May 19, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28532780/meta-analysis-comparing-coronary-artery-bypass-grafting-to-drug-eluting-stents-and-to-medical-therapy-alone-for-left-main-coronary-artery-disease
#4
Rahman Shah, Mohamed S Morsy, Darryl S Weiman, George W Vetrovec
Historically, coronary artery bypass graft (CABG) surgery has been the standard revascularization method for unprotected left main coronary artery (LMCA) disease. Over the last decade, several randomized controlled trials (RCTs) have shown favorable results for percutaneous coronary intervention (PCI) with drug-eluting stent (DES) compared with CABG; however, no RCT has been conducted directly comparing DESs with medical therapy alone (MTA). Furthermore, the 2 most recently reported larger RCTs, using new-generation DESs reached somewhat conflicting conclusions comparing the 2 revascularization strategies...
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28530509/genotyping-toxoplasma-gondii-with-the-b1-gene-in-naturally-infected-sheep-from-an-endemic-region-in-the-pacific-coast-of-mexico
#5
Williams Arony Martínez-Flores, José Manuel Palma-García, Heriberto Caballero-Ortega, Alejandra Del Viento-Camacho, Eduardo López-Escamilla, Fernando Martínez-Hernández, Pablo Vinuesa, Dolores Correa, Pablo Maravilla
Toxoplasma gondii is a protozoan parasite with a broad ecological valence, which has been detected in a wide range of hosts and landscapes. Although the genus is considered monospecific, in recent years it has been demonstrated to exhibit more genetic variability than previously known. In Mexico, there are few genotyping studies, which suggest that classical, autochthonous, and atypical strains are circulating. The goal of this study was to describe T. gondii genetic diversity in naturally infected sheep from Colima, Mexico...
May 22, 2017: Vector Borne and Zoonotic Diseases
https://www.readbyqxmd.com/read/28527793/prevalence-of-non-aureus-staphylococcus-species-causing-intramammary-infections-in-canadian-dairy-herds
#6
Larissa A Z Condas, Jeroen De Buck, Diego B Nobrega, Domonique A Carson, Sohail Naushad, Sarne De Vliegher, Ruth N Zadoks, John R Middleton, Simon Dufour, John P Kastelic, Herman W Barkema
Non-aureus staphylococci (NAS), the microorganisms most frequently isolated from bovine milk worldwide, are a heterogeneous group of numerous species. To establish their importance as a group, the distribution of individual species needs to be determined. In the present study, NAS intramammary infection (IMI) was defined as a milk sample containing ≥1,000 cfu/mL in pure or mixed culture that was obtained from a cohort of cows assembled by the Canadian Bovine Mastitis Research Network. Overall, 6,213 (6.3%) of 98,233 quarter-milk samples from 5,149 cows and 20,305 udder quarters were associated with an NAS IMI...
May 17, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28526850/drought-and-child-mortality-a-meta-analysis-of-small-scale-surveys-from-ethiopia
#7
Tefera Darge Delbiso, Chiara Altare, Jose Manuel Rodriguez-Llanes, Shannon Doocy, Debarati Guha-Sapir
Despite the intuitive connection between drought and mortality, we still lack a sound quantitative synthesis of evidence drawn from the available data. In this study, we estimate the pooled under-five death rates (U5DR) and assess the effect of drought on child death in Ethiopia. Small-scale mortality surveys were searched from the Complex Emergency Database and then aggregated spatially and temporally with drought exposure data from the Global Drought Monitor and food insecurity data from the Famine Early Warning Systems Network...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28515426/tolerability-of-opioid-analgesia-for-chronic-pain-a-network-meta-analysis
#8
Zengdong Meng, Jing Yu, Michael Acuff, Chong Luo, Sanrong Wang, Lehua Yu, Rongzhong Huang
Aim of this study was to study the tolerability of opioid analgesia by performing a network meta-analysis (NMA) of randomized-controlled trials (RCTs) which investigated effectiveness of opioids for the management of chronic pain. Research articles reporting outcomes of RCT/s comparing 2 or more opioid analgesics for the management of chronic pain were obtained by database search. Bayesian NMAs were performed to combine direct comparisons between treatments with that of indirect simulated evidence. Study endpoints were: incidence of adverse events, incidence of constipation, trial withdrawal rate, and patient satisfaction with treatment...
May 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28510607/recent-evolutionary-history-of-chrysoperla-externa-hagen-1861-neuroptera-chrysopidae-in-brazil
#9
Adriana C Morales-Corrêa E Castro, Nara Cristina Chiarini Pena Barbosa
This work aimed to elucidate the distribution of Chrysoperla externa haplotypes and investigate whether it exhibits structure based on genetic composition as opposed to geographic location. The genetic diversity of C. externa, analyzed by AMOVA using the COI and 16S rRNA genes as mitochondrial markers, showed significant haplotype structure arising from genetic differences that was not associated with sampling location. This was reflected in the network grouping. Bayesian inference showed that haplotype distribution may have its origins in C...
2017: PloS One
https://www.readbyqxmd.com/read/28503228/network-meta-analysis-a-technique-to-gather-evidence-from-direct-and-indirect-comparisons
#10
Fernanda S Tonin, Inajara Rotta, Antonio M Mendes, Roberto Pontarolo
Systematic reviews and pairwise meta-analyses of randomized controlled trials, at the intersection of clinical medicine, epidemiology and statistics, are positioned at the top of evidence-based practice hierarchy. These are important tools to base drugs approval, clinical protocols and guidelines formulation and for decision-making. However, this traditional technique only partially yield information that clinicians, patients and policy-makers need to make informed decisions, since it usually compares only two interventions at the time...
January 2017: Pharmacy Practice
https://www.readbyqxmd.com/read/28503070/tyrosine-kinase-inhibitor-combination-therapy-in-first-line-treatment-of-non-small-cell-lung-cancer-systematic-review-and-network-meta-analysis
#11
Sarah Batson, Stephen A Mitchell, Ricarda Windisch, Elisabetta Damonte, Veronica C Munk, Noemi Reguart
INTRODUCTION: The introduction of epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs) has improved the outlook for patients with advanced non-small-cell lung cancer (NSCLC) with EGFR+ mutations. However, most patients develop resistance, with the result that median progression-free survival (PFS) iŝ12 months. Combining EGFR-TKIs with other agents, such as bevacizumab, is a promising approach to prolonging remission. This systematic review and network meta-analysis (NMA) were undertaken to assess available evidence regarding the benefits of first-line combination therapy involving EGFR-TKIs in patients with advanced NSCLC...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28501804/exercise-and-other-non-pharmaceutical-interventions-for-cancer-related-fatigue-in-patients-during-or-after-cancer-treatment-a-systematic-review-incorporating-an-indirect-comparisons-meta-analysis
#12
REVIEW
Roger Hilfiker, Andre Meichtry, Manuela Eicher, Balfe Lina Nilsson, Ruud H Knols, Martin L Verra, Jan Taeymans
AIM: To assess the relative effects of different types of exercise and other non-pharmaceutical interventions on cancer-related fatigue (CRF) in patients during and after cancer treatment. DESIGN: Systematic review and indirect-comparisons meta-analysis. DATA SOURCES: Articles were searched in PubMed, Cochrane CENTRAL and published meta-analyses. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Randomised studies published up to January 2017 evaluating different types of exercise or other non-pharmaceutical interventions to reduce CRF in any cancer type during or after treatment...
May 13, 2017: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/28500765/developing-bayesian-networks-from-a-dependency-layered-ontology-a-proof-of-concept-in-radiation-oncology
#13
Alan M Kalet, Jason N Doctor, John H Gennari, Mark H Phillips
PURPOSE: Bayesian networks (BNs) are graphical representations of probabilistic knowledge that offer normative reasoning under uncertainty and are well suited for use in medical domains. Traditional knowledge-based network development of BN topology requires that modeling experts establish relevant dependency links between domain concepts by searching and translating published literature, querying domain experts, or applying machine learning algorithms on data. For initial development these methods are time-intensive and this cost hinders the growth of BN applications in medical decision making...
May 13, 2017: Medical Physics
https://www.readbyqxmd.com/read/28499845/exploring-resistance-pathways-for-first-generation-ns3-4a-protease-inhibitors-boceprevir-and-telaprevir-using-bayesian-network-learning
#14
Lize Cuypers, Pieter Libin, Yoeri Schrooten, Kristof Theys, Velia Chiara Di Maio, Valeria Cento, Maja M Lunar, Frederik Nevens, Mario Poljak, Francesca Ceccherini-Silberstein, Ann Nowé, Kristel Van Laethem, Anne-Mieke Vandamme
Resistance-associated variants (RAVs) have been shown to influence treatment response to direct-acting antivirals (DAAs) and first generation NS3/4A protease inhibitors (PIs) in particular. Interpretation of hepatitis C virus (HCV) genotypic drug resistance remains a challenge, especially in patients who previously failed DAA therapy and need to be retreated with a second DAA based regimen. Bayesian network (BN) learning on HCV sequence data from patients treated with DAAs could provide insight in resistance pathways against PIs for HCV subtypes 1a and 1b, in a similar way as applied before for HIV...
May 9, 2017: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/28495368/the-dynamic-programming-high-order-dynamic-bayesian-networks-learning-for-identifying-effective-connectivity-in-human-brain-from-fmri
#15
Shilpa Dang, Santanu Chaudhury, Brejesh Lall, Prasun Kumar Roy
BACKGROUND: Determination of effective connectivity (EC) among brain regions using fMRI is helpful in understanding the underlying neural mechanisms. Dynamic Bayesian Networks (DBNs) are an appropriate class of probabilistic graphical temporal-models that have been used in past to model EC from fMRI, specifically order-one. NEW-METHOD: High-order DBNs (HO-DBNs) have still not been explored for fMRI data. A fundamental problem faced in the structure-learning of HO-DBN is high computational-burden and low accuracy by the existing heuristic search techniques used for EC detection from fMRI...
May 8, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28487642/resting-state-neurophysiological-abnormalities-in-posttraumatic-stress-disorder-a-magnetoencephalography-study
#16
Amy S Badura-Brack, Elizabeth Heinrichs-Graham, Timothy J McDermott, Katherine M Becker, Tara J Ryan, Maya M Khanna, Tony W Wilson
Posttraumatic stress disorder (PTSD) is a debilitating psychiatric condition that is common in veterans returning from combat operations. While the symptoms of PTSD have been extensively characterized, the neural mechanisms that underlie PTSD are only vaguely understood. In this study, we examined the neurophysiology of PTSD using magnetoencephalography (MEG) in a sample of veterans with and without PTSD. Our primary hypothesis was that veterans with PTSD would exhibit aberrant activity across multiple brain networks, especially those involving medial temporal and frontal regions...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28487354/preventive-strategies-for-contrast-induced-acute-kidney-injury-in-patients-undergoing-percutaneous-coronary-procedures-evidence-from-a-hierarchical-bayesian-network-meta-analysis-of-124-trials-and-28%C3%A2-240-patients
#17
Daniele Giacoppo, Giuseppe Gargiulo, Sergio Buccheri, Patrizia Aruta, Robert A Byrne, Salvatore Cassese, George Dangas, Adnan Kastrati, Roxana Mehran, Corrado Tamburino, Davide Capodanno
BACKGROUND: The effectiveness of currently available effective preventive strategies for contrast-induced acute kidney injury (CIAKI) is a matter of debate. METHODS AND RESULTS: We performed a Bayesian random-effects network meta-analysis of 124 trials (28 240 patients) comparing a total of 10 strategies: saline, statin, N-acetylcysteine (NAC), sodium bicarbonate (NaHCO3), NAC+NaHCO3, ascorbic acid, xanthine, dopaminergic agent, peripheral ischemic preconditioning, and natriuretic peptide...
May 2017: Circulation. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28487178/comparison-between-generalized-linear-modelling-and-additive-bayesian-network-identification-of-factors-associated-with-the-incidence-of-antibodies-against-leptospira-interrogans-sv-pomona-in-meat-workers-in-new-zealand
#18
M Pittavino, A Dreyfus, C Heuer, J Benschop, P Wilson, J Collins-Emerson, P R Torgerson, R Furrer
BACKGROUND: Additive Bayesian Network (ABN) is a graphical model which extends Generalized Linear Modelling (GLM) to multiple dependent variables. The present study compares results from GLM with those from ABN analysis used to identify factors associated with Leptospira interrogans sv Pomona (Pomona) infection by exploring the advantages and disadvantages of these two methodologies, to corroborate inferences informing health and safety measures at abattoirs in New Zealand (NZ). METHODOLOGY AND FINDINGS: in a cohort study in four sheep slaughtering abattoirs in NZ, sera were collected twice a year from 384 meat workers and tested by Microscopic Agglutination with a 91% sensitivity and 94% specificity for Pomona...
May 6, 2017: Acta Tropica
https://www.readbyqxmd.com/read/28481462/biologics-or-tofacitinib-for-people-with-rheumatoid-arthritis-naive-to-methotrexate-a-systematic-review-and-network-meta-analysis
#19
REVIEW
Jasvinder A Singh, Alomgir Hossain, Amy S Mudano, Elizabeth Tanjong Ghogomu, Maria E Suarez-Almazor, Rachelle Buchbinder, Lara J Maxwell, Peter Tugwell, George A Wells
BACKGROUND: Biologic disease-modifying anti-rheumatic drugs (biologics) are highly effective in treating rheumatoid arthritis (RA), however there are few head-to-head biologic comparison studies. We performed a systematic review, a standard meta-analysis and a network meta-analysis (NMA) to update the 2009 Cochrane Overview. This review is focused on the adults with RA who are naive to methotrexate (MTX) that is, receiving their first disease-modifying agent. OBJECTIVES: To compare the benefits and harms of biologics (abatacept, adalimumab, anakinra, certolizumab pegol, etanercept, golimumab, infliximab, rituximab, tocilizumab) and small molecule tofacitinib versus comparator (methotrexate (MTX)/other DMARDs) in people with RA who are naive to methotrexate...
May 8, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28472982/comparative-safety-of-anti-epileptic-drugs-during-pregnancy-a-systematic-review-and-network-meta-analysis-of-congenital-malformations-and-prenatal-outcomes
#20
Areti Angeliki Veroniki, Elise Cogo, Patricia Rios, Sharon E Straus, Yaron Finkelstein, Ryan Kealey, Emily Reynen, Charlene Soobiah, Kednapa Thavorn, Brian Hutton, Brenda R Hemmelgarn, Fatemeh Yazdi, Jennifer D'Souza, Heather MacDonald, Andrea C Tricco
BACKGROUND: Pregnant women with epilepsy frequently experience seizures related to pregnancy complications and are often prescribed anti-epileptic drugs (AEDs) to manage their symptoms. However, less is known about the comparative safety of AED exposure in utero. We aimed to compare the risk of congenital malformations (CMs) and prenatal outcomes of AEDs in infants/children who were exposed to AEDs in utero through a systematic review and Bayesian random-effects network meta-analysis...
May 5, 2017: BMC Medicine
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