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Laboratory data prediction models

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https://www.readbyqxmd.com/read/28230845/dynamic-models-of-large-scale-brain-activity
#1
REVIEW
Michael Breakspear
Movement, cognition and perception arise from the collective activity of neurons within cortical circuits and across large-scale systems of the brain. While the causes of single neuron spikes have been understood for decades, the processes that support collective neural behavior in large-scale cortical systems are less clear and have been at times the subject of contention. Modeling large-scale brain activity with nonlinear dynamical systems theory allows the integration of experimental data from multiple modalities into a common framework that facilitates prediction, testing and possible refutation...
February 23, 2017: Nature Neuroscience
https://www.readbyqxmd.com/read/28229138/eawag-soil-in-envipath-a-new-resource-for-exploring-regulatory-pesticide-soil-biodegradation-pathways-and-half-life-data
#2
Diogo A R S Latino, Jörg Wicker, Martin Gütlein, Emanuel Schmid, Stefan Kramer, Kathrin Fenner
Developing models for the prediction of microbial biotransformation pathways and half-lives of trace organic contaminants in different environments requires as training data easily accessible and sufficiently large collections of respective biotransformation data that are annotated with metadata on study conditions. Here, we present the Eawag-Soil package, a public database that has been developed to contain all freely accessible regulatory data on pesticide degradation in laboratory soil simulation studies for pesticides registered in the EU (282 degradation pathways, 1535 reactions, 1619 compounds and 4716 biotransformation half-life values with corresponding metadata on study conditions)...
February 23, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28226400/population-pharmacokinetics-and-pharmacodynamic-target-attainment-of-ampicillin-in-neonates-with-hypoxemic-ischemic-encephalopathy-in-the-setting-of-controlled-hypothermia
#3
Jeffrey J Cies, Keri N Fugarolas, Wayne S Moore, Robert W Mason, Ogechukwu R Menkiti
STUDY OBJECTIVE: To describe the population pharmacokinetics and pharmacodynamic target attainment of ampicillin in neonates with hypoxic-ischemic encephalopathy (HIE) undergoing controlled hypothermia (CH). DESIGN: Prospective, open-label pharmacokinetic study. SETTING: 189-bed, freestanding children's tertiary care teaching hospital. PATIENTS: Thirteen neonates (three females, 10 males) with HIE encephalopathy receiving CH and ampicillin 100 mg/kg/dose intravenously every 8 hours who were admitted to the neonatal intensive care unit between May 2013 and June 2014...
February 22, 2017: Pharmacotherapy
https://www.readbyqxmd.com/read/28223945/toward-respiratory-assessment-using-depth-measurements-from-a-time-of-flight-sensor
#4
Charles Sharp, Vahid Soleimani, Sion Hannuna, Massimo Camplani, Dima Damen, Jason Viner, Majid Mirmehdi, James W Dodd
Introduction: There is increasing interest in technologies that may enable remote monitoring of respiratory disease. Traditional methods for assessing respiratory function such as spirometry can be expensive and require specialist training to perform and interpret. Remote, non-contact tracking of chest wall movement has been explored in the past using structured light, accelerometers and impedance pneumography, but these have often been costly and clinical utility remains to be defined. We present data from a 3-Dimensional time-of-flight camera (found in gaming consoles) used to estimate chest volume during routine spirometry maneuvres...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28223828/preoperative-albumin-to-globulin-ratio-and-prognostic-nutrition-index-predict-prognosis-for-glioblastoma
#5
Wen-Zhe Xu, Feng Li, Zhen-Kuan Xu, Xuan Chen, Bin Sun, Jing-Wei Cao, Yu-Guang Liu
OBJECTIVE: Impaired immunonutritional status has disadvantageous effects on outcomes for cancer patients. Preoperative albumin-to-globulin ratio (AGR) and the prognostic nutrition index (PNI) have been used as prognostic factors in various cancers. We aimed to evaluate the clinical significance of the AGR and PNI in glioblastoma. MATERIALS AND METHODS: This retrospective analysis involved 166 patients. Demographic, clinical, and laboratory data were collected. AGR and the PNI were calculated as AGR = albumin/(total serum protein - albumin) and PNI = albumin (g/L) + 5 × total lymphocyte count (10(9)/L)...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28223462/fallacy-of-the-unique-genome-sequence-diversity-within-single-helicobacter-pylori-strains
#6
Jenny L Draper, Lori M Hansen, David L Bernick, Samar Abedrabbo, Jason G Underwood, Nguyet Kong, Bihua C Huang, Allison M Weis, Bart C Weimer, Arnoud H M van Vliet, Nader Pourmand, Jay V Solnick, Kevin Karplus, Karen M Ottemann
Many bacterial genomes are highly variable but nonetheless are typically published as a single assembled genome. Experiments tracking bacterial genome evolution have not looked at the variation present at a given point in time. Here, we analyzed the mouse-passaged Helicobacter pylori strain SS1 and its parent PMSS1 to assess intra- and intergenomic variability. Using high sequence coverage depth and experimental validation, we detected extensive genome plasticity within these H. pylori isolates, including movement of the transposable element IS607, large and small inversions, multiple single nucleotide polymorphisms, and variation in cagA copy number...
February 21, 2017: MBio
https://www.readbyqxmd.com/read/28220024/molecular-subtypes-improve-prognostic-value-of-international-metastatic-renal-cell-carcinoma-database-consortium-prognostic-model
#7
Guillermo de Velasco, Aedín C Culhane, André P Fay, A Ari Hakimi, Martin H Voss, Nizar M Tannir, Pheroze Tamboli, Leonard J Appleman, Joaquim Bellmunt, W Kimryn Rathmell, Laurence Albiges, James J Hsieh, Daniel Y C Heng, Sabina Signoretti, Toni K Choueiri
INTRODUCTION: Gene-expression signatures for prognosis have been reported in localized renal cell carcinoma (RCC). The aim of this study was to test the predictive power of two different signatures, ClearCode34, a 34-gene signature model [Eur Urol 2014;66:77-84], and an 8-gene signature model [Eur Urol 2015;67:17-20], in the setting of systemic therapy for metastatic disease. MATERIALS AND METHODS: Metastatic RCC (mRCC) patients from five institutions who were part of TCGA were identified and clinical data were retrieved...
February 20, 2017: Oncologist
https://www.readbyqxmd.com/read/28213596/white-cell-count-in-the-normal-range-and-short-term-and-long-term-mortality-international-comparisons-of-electronic-health-record-cohorts-in-england-and-new-zealand
#8
Anoop Dinesh Shah, Simon Thornley, Sheng-Chia Chung, Spiros Denaxas, Rod Jackson, Harry Hemingway
OBJECTIVES: Electronic health records offer the opportunity to discover new clinical implications for established blood tests, but international comparisons have been lacking. We tested the association of total white cell count (WBC) with all-cause mortality in England and New Zealand. SETTING: Primary care practices in England (ClinicAl research using LInked Bespoke studies and Electronic health Records (CALIBER)) and New Zealand (PREDICT). DESIGN: Analysis of linked electronic health record data sets: CALIBER (primary care, hospitalisation, mortality and acute coronary syndrome registry) and PREDICT (cardiovascular risk assessments in primary care, hospitalisations, mortality, dispensed medication and laboratory results)...
February 17, 2017: BMJ Open
https://www.readbyqxmd.com/read/28204900/cadmium-bioaccumulation-in-aquatic-oligochaetes-using-a-biodynamic-model-a-review-of-values-of-physiological-parameters-and-model-validation-using-laboratory-and-field-bioaccumulation-data
#9
REVIEW
Leire Méndez-Fernández, Pilar Rodriguez, Maite Martínez-Madrid
This study reviews certain physiological digestive parameters in the literature that could be used to predict tissue residues in aquatic oligochaetes using the biodynamic model. Predictions were evaluated with independently measured Cd bioaccumulation data in sediment bioassays and field oligochaetes. The parameter review focused on three species commonly used in ecotoxicity testing and bioaccumulation studies: Tubifex tubifex (Tt), Limnodrilus hoffmeisteri (Lh) and Lumbriculus variegatus (Lv). Median Ingestion rates (g g(-1) d(-1), dw) at unpolluted conditions were 7...
February 16, 2017: Reviews of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28203635/grounded-understanding-of-abstract-concepts-the-case-of-stem-learning
#10
REVIEW
Justin C Hayes, David J M Kraemer
Characterizing the neural implementation of abstract conceptual representations has long been a contentious topic in cognitive science. At the heart of the debate is whether the "sensorimotor" machinery of the brain plays a central role in representing concepts, or whether the involvement of these perceptual and motor regions is merely peripheral or epiphenomenal. The domain of science, technology, engineering, and mathematics (STEM) learning provides an important proving ground for sensorimotor (or grounded) theories of cognition, as concepts in science and engineering courses are often taught through laboratory-based and other hands-on methodologies...
2017: Cogn Res Princ Implic
https://www.readbyqxmd.com/read/28199401/hospital-discharge-abstracts-have-limited-accuracy-in-identifying-occurrence-of-clostridium-difficile-infections-among-hospitalized-individuals-with-inflammatory-bowel-disease-a-population-based-study
#11
Harminder Singh, Zoann Nugent, B Nancy Yu, Lisa M Lix, Laura Targownik, Charles Bernstein
BACKGROUND: Hospital discharge databases are used to study the epidemiology of Clostridium difficile infections (CDI) among hospitalized patients with inflammatory bowel disease (IBD). CDI in IBD is increasingly important and accurately estimating its occurrence is critical in understanding its comorbidity. There are limited data on the reliability of the International Classification of Diseases 10th revision (ICD-10) (now widely used in North America) CDI code in determining occurrence of CDI among hospitalized patients...
2017: PloS One
https://www.readbyqxmd.com/read/28196308/risk-factors-of-serious-postoperative-complications-after-pancreaticoduodenectomy-and-risk-calculators-for-predicting-postoperative-complications-a-nationwide-study-of-17-564-patients-in-japan
#12
Shuichi Aoki, Hiroaki Miyata, Mitsukazu Gotoh, Fuyuhiko Motoi, Hiraku Kumamaru, Hiroyuki Konno, Go Wakabayashi, Yoshihiro Kakeji, Masaki Mori, Yasuyuki Seto, Michiaki Unno
BACKGROUND: The morbidity rate after pancreaticoduodenectomy remains high. The objectives of this retrospective cohort study were to clarify the risk factors associated with serious morbidity (Clavien-Dindo classification grades IV-V), and create complication risk calculators using the Japanese National Clinical Database. METHODS: Between 2011 and 2012, data from 17564 patients who underwent pancreaticoduodenectomy at 1311 institutions in Japan were recorded in this database...
February 14, 2017: Journal of Hepato-biliary-pancreatic Sciences
https://www.readbyqxmd.com/read/28192005/does-real-time-variability-in-inhibitory-control-drive-snacking-behavior-an-intensive-longitudinal-study
#13
Daniel J H Powell, David McMinn, Julia L Allan
OBJECTIVE: Laboratory eating studies and cross-sectional surveys indicate individuals with inefficient executive function (EF) consume more unhealthy snacks than others. However, the importance of EF in determining snacking behavior in the "real world" has not been established. Contemporary behavioral and self-control theories posit EF as a dynamic resource fluctuating over time. Consequently, a test of the relevance of EF to behavior within individuals is required. This study tested within- and between-person effects of real-time variability in objectively measured inhibitory control (a core facet of EF) on subsequent snacking behavior in daily life...
February 13, 2017: Health Psychology: Official Journal of the Division of Health Psychology, American Psychological Association
https://www.readbyqxmd.com/read/28187811/determinants-of-prognosis-in-neurocatastrophes
#14
K Sharma, R D Stevens
A neurocatastrophe or severe brain injury (SBI) is a central nervous system insult associated with a high likelihood of death or severe disability. While many etiologic processes may lead to SBI, the most common and best-studied clinical paradigms are traumatic brain injury and anoxic-ischemic encephalopathy following cardiac arrest. Clinical phenotypes following SBI include acute and chronic disorders of consciousness as well as a range of cognitive and behavioral impairments. A fundamental task for medical teams working in the acute phase is to estimate SBI recovery probabilities with the highest degree of accuracy possible...
2017: Handbook of Clinical Neurology
https://www.readbyqxmd.com/read/28183156/a-model-to-predict-the-onset-of-non-alcoholic-fatty-liver-disease-within-two-years-in-elderly-adults
#15
Ya-Jie Lin, Xi-Mei Gao, Wei-Wei Pan, Shuai Gao, Zhen-Zhen Yu, Ping Xu, Xiao-Peng Fan
BACKGROUND AND AIM: Non-alcoholic fatty liver disease (NAFLD) is a common cause of chronic hepatitis, which leads to cirrhosis and hepatocellular carcinoma. However, it is difficult to identify subjects at high risk for NAFLD onset. This study aims to construct a model to predict the onset of NAFLD within two years in elderly adults. METHODS: This study included and followed 3378 initial NAFLD-free subjects aged 60 years or over for 2 years, which were randomly divided into a training set and a validation set...
February 9, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28181934/novel-pump-control-technology-accelerates-drug-delivery-onset-in-a-model-of-pediatric-drug-infusion
#16
Michael J Parker, Mark A Lovich, Amy C Tsao, Hao Deng, Timothy Houle, Robert A Peterfreund
BACKGROUND: Laboratory data suggest that newly initiated drug infusions reach steady-state delivery after a significant time lag. Depending on drug and carrier flow rates and the infusion system's common volume, lag times may exceed 20 or more minutes, especially in the neonatal/pediatric critical care environment. This study tested the hypothesis that a computer-executed algorithm controlling infusion pumps in a coordinated fashion predictably hastens the achievement of the intended steady-state drug delivery in a model of neonatal/pediatric drug infusion...
February 8, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28181186/an-automated-behavioral-measure-of-mind-wandering-during-computerized-reading
#17
Myrthe Faber, Robert Bixler, Sidney K D'Mello
Mind wandering is a ubiquitous phenomenon in which attention shifts from task-related to task-unrelated thoughts. The last decade has witnessed an explosion of interest in mind wandering, but research has been stymied by a lack of objective measures, leading to a near-exclusive reliance on self-reports. We addressed this issue by developing an eye-gaze-based, machine-learned model of mind wandering during computerized reading. Data were collected in a study in which 132 participants reported self-caught mind wandering while reading excerpts from a book on a computer screen...
February 8, 2017: Behavior Research Methods
https://www.readbyqxmd.com/read/28176778/reconciled-rat-and-human-metabolic-networks-for-comparative-toxicogenomics-and-biomarker-predictions
#18
Edik M Blais, Kristopher D Rawls, Bonnie V Dougherty, Zhuo I Li, Glynis L Kolling, Ping Ye, Anders Wallqvist, Jason A Papin
The laboratory rat has been used as a surrogate to study human biology for more than a century. Here we present the first genome-scale network reconstruction of Rattus norvegicus metabolism, iRno, and a significantly improved reconstruction of human metabolism, iHsa. These curated models comprehensively capture metabolic features known to distinguish rats from humans including vitamin C and bile acid synthesis pathways. After reconciling network differences between iRno and iHsa, we integrate toxicogenomics data from rat and human hepatocytes, to generate biomarker predictions in response to 76 drugs...
February 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28167685/external-validation-of-the-fullpiers-model-for-predicting-adverse-maternal-outcomes-in-pregnancy-hypertension-in-low-and-middle-income-countries
#19
U Vivian Ukah, Beth Payne, Tang Lee, Laura A Magee, Peter von Dadelszen
The hypertensive disorders of pregnancy are leading causes of maternal mortality and morbidity, especially in low- and middle-income countries. Early identification of women with preeclampsia and other hypertensive disorders of pregnancy at high risk of complications will aid in reducing this health burden. The fullPIERS model (Preeclampsia Integrated Estimate of Risk) was developed for predicting adverse maternal outcomes from preeclampsia using data from tertiary centers in high-income countries and uses maternal demographics, signs, symptoms, and laboratory tests as predictors...
February 6, 2017: Hypertension
https://www.readbyqxmd.com/read/28166814/closely-related-borrelia-burgdorferi-sensu-stricto-strains-exhibit-similar-fitness-in-single-infections-and-asymmetric-competition-in-multiple-infections
#20
Evelyn C Rynkiewicz, Julia Brown, Danielle M Tufts, Ching-I Huang, Helge Kampen, Stephen J Bent, Durland Fish, Maria A Diuk-Wasser
BACKGROUND: Wild hosts are commonly co-infected with complex, genetically diverse, pathogen communities. Competition is expected between genetically or ecologically similar pathogen strains which may influence patterns of coexistence. However, there is little data on how specific strains of these diverse pathogen species interact within the host and how this impacts pathogen persistence in nature. Ticks are the most common disease vector in temperate regions with Borrelia burgdorferi, the causative agent of Lyme disease, being the most common vector-borne pathogen in North America...
February 6, 2017: Parasites & Vectors
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