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https://www.readbyqxmd.com/read/29777986/predicting-of-the-refractive-index-of-haemoglobin-using-the-hybrid-ga-svr-approach
#1
Tajudeen A Oyehan, Ibrahim O Alade, Aliyu Bagudu, Kazeem O Sulaiman, Sunday O Olatunji, Tawfik A Saleh
The optical properties of blood play crucial roles in medical diagnostics and treatment, and in the design of new medical devices. Haemoglobin is a vital constituent of the blood whose optical properties affect all of the optical properties of human blood. The refractive index of haemoglobin has been reported to strongly depend on its concentration which is a function of the physiology of biological cells. This makes the refractive index of haemoglobin an essential non-invasive bio-marker of diseases. Unfortunately, the complexity of blood tissue makes it challenging to experimentally measure the refractive index of haemoglobin...
April 30, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29777816/aptamer-based-assay-for-monitoring-genetic-disorder-phenylketonuria-pku
#2
Mohammad Hasanzadeh, Amir Zargami, Hossein Navay Baghban, Ahad Mokhtarzadeh, Nasrin Shadjou, Soltanali Mahboob
The genetic disorder phenylketonuria (PKU) is the inability to metabolize phenylalanine because of a lack of the enzyme phenylalanine hydroxylase. Phenylalanine is used to biochemically form proteins, coded for by DNA. The development of an apta-assay for detection of l-Phenylalanine is presented in this work. A highly specific DNA-aptamer, selected to l-Phenylalanine was immobilized onto a gold nanostructure and electrochemical measurements were performed in a solution containing the phosphate buffer solution with physiological pH...
May 16, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29777436/fatigue-related-risk-management-in-the-emergency-department-a-focus-group-study
#3
Pierre Bérastégui, Mathieu Jaspar, Alexandre Ghuysen, Anne-Sophie Nyssen
Fatigue has major implications on both patient safety and healthcare practitioner's well-being. Traditionally, two approaches can be used to reduce fatigue-related risk: reducing the likelihood of a fatigued operator working (i.e. fatigue reduction), or reducing the likelihood that a fatigued operator will make an error (i.e. fatigue proofing). Recent progress mainly focussed on fatigue reduction strategies such as reducing work hours. Yet it has to be recognized that such approach has not wholly overcome the experience of fatigue...
May 18, 2018: Internal and Emergency Medicine
https://www.readbyqxmd.com/read/29776802/dental-maturity-assessment-in-serbian-population-a-comparison-of-cameriere-s-european-formula-and-willems-method
#4
Nemanja Marinkovic, Petar Milovanovic, Marija Djuric, Nenad Nedeljkovic, Ksenija Zelic
AIMS: To test the applicability of European formula for dental maturity estimation in non-adults on Serbian sample and compare its accuracy with Willems' age estimation method. MATERIALS AND METHODS: Panoramic radiographs of 423 children (192 boys and 231 girls) aged between 5 to 15 were evaluated. Willems' method and European formula were applied to estimate dental age. Intra-class correlation (ICC) coefficients between estimated age and chronological age for each method and sex were reported separately...
April 26, 2018: Forensic Science International
https://www.readbyqxmd.com/read/29776675/risk-factors-for-near-miss-events-and-safety-incidents-in-pediatric-radiation-therapy
#5
Nimrah Baig, Jiangxia Wang, Shereef Elnahal, Todd McNutt, Jean Wright, Theodore DeWeese, Stephanie Terezakis
BACKGROUND AND PURPOSE: Factors contributing to safety- or quality-related incidents (e.g. variances) in children are unknown. We identified clinical and RT treatment variables associated with risk for variances in a pediatric cohort. MATERIALS AND METHODS: Using our institution's incident learning system, 81 patients age ≤21 years old who experienced variances were compared to 191 pediatric patients without variances. Clinical and RT treatment variables were evaluated as potential predictors for variances using univariate and multivariate analyses...
May 15, 2018: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/29775996/interplay-between-adenylate-metabolizing-enzymes-and-amp-activated-protein-kinase
#6
REVIEW
Marcella Camici, Simone Allegrini, Maria Grazia Tozzi
Purine nucleotides are involved in a variety of cellular functions, such as energy storage and transfer, and signalling, in addition to being the precursors of nucleic acids and cofactors of many biochemical reactions. They can be generated through two separate pathways, the de novo biosynthesis pathway and the salvage pathway. De novo purine biosynthesis leads to the formation of IMP, from which the adenylate and guanylate pools are generated by two additional steps. The salvage pathways utilize hypoxanthine, guanine and adenine to generate the corresponding mononucleotides...
May 18, 2018: FEBS Journal
https://www.readbyqxmd.com/read/29775405/the-mouse-heart-attack-research-tool-mhart-1-0-database
#7
Kristine Y DeLeon-Pennell, Rugmani Padmanabhan Iyer, Yonggang Ma, Andriy Yabluchanskiy, Rogelio Zamilpa, Ying Ann Chiao, Presley Cannon, Courtney Cates, Elizabeth R Flynn, Ganesh V Halade, Lisandra E de Castro Bras, Merry L Lindsey
The generation of Big Data has enabled systems-level dissections into the mechanisms of cardiovascular pathology. Integration of genetic, proteomic, and pathophysiological variables across platforms and laboratories fosters discoveries through multidisciplinary investigations and minimizes unnecessary redundancy in research efforts. The Mouse Heart Attack Research Tool (mHART) consolidates a large dataset of over 10 years of experiments from a single laboratory for cardiovascular investigators to generate novel hypotheses and identify new predictive markers of progressive left ventricular remodeling following myocardial infarction (MI) in mice...
May 18, 2018: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/29774951/protein-kinase-c%C3%AE-pkc%C3%AE-involved-in-the-regulation-of-pakt1-ser473-on-the-release-of-mouse-oocytes-from-diplotene-arrest
#8
Lingling Liu, Sen Li, Hanwen Li, Dahai Yu, Chunyu Li, Gensong Li, Yu Cao, Chen Feng, Xin Deng
Defects in meiotic maturation may lead to chromosome segregation errors and genomic instability. Previous reports indicated that protein kinase C delta (PKCδ) may interact with microtubule organizing center-associated protein to play a role on meiotic spindle organization of mammalian oocytes. In this study, we explored the potential role of protein kinase B alpha (PKBα/Akt1), PKCδ, and their relationship on meiotic maturation of mouse oocytes. We examined the expression and localization of pAkt1 (Ser473) and/or pPKCδ (Thr505) under the treatment of SH-6 or Sotrastaurin...
May 18, 2018: Cell Biochemistry and Function
https://www.readbyqxmd.com/read/29774624/what-does-it-take-to-stress-a-word-digital-manipulation-of-stress-markers-in-ataxic-dysarthria
#9
Anja Lowit, Tolulope Ijitona, Anja Kuschmann, Stephen Corson, John Soraghan
BACKGROUND: Stress production is important for effective communication, but this skill is frequently impaired in people with motor speech disorders. The literature reports successful treatment of these deficits in this population, thus highlighting the therapeutic potential of this area. However, no specific guidance is currently available to clinicians about whether any of the stress markers are more effective than others, to what degree they have to be manipulated, and whether strategies need to differ according to the underlying symptoms...
May 18, 2018: International Journal of Language & Communication Disorders
https://www.readbyqxmd.com/read/29772183/accurate-treatment-of-charge-transfer-excitations-and-thermally-activated-delayed-fluorescence-using-the-particle-particle-random-phase-approximation
#10
Rachael Al-Saadon, Christopher Sutton, Weitao Yang
Thermally activated delayed florescence (TADF) is a mechanism that increases the electroluminescence efficiency in organic light-emitting diodes by harnessing both singlet and triplet excitons. TADF is facilitated by a small energy difference between the first singlet (S1 ) and triplet (T1 ) excited states (ΔE(ST)), which is minimized by spatial separation of the donor and acceptor moieties. The resultant charge-transfer (CT) excited states are difficult to model using time-dependent density functional theory (TDDFT) because of the delocalization error present in standard density functional approximations to the exchange-correlation energy...
May 17, 2018: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29771948/a-consistent-and-general-modified-venn-diagram-approach-that-provides-insights-into-regression-analysis
#11
Robert M O'Brien
Venn diagrams are used to provide an intuitive understanding of multiple regression analysis and these diagrams work well with two variables. The area of overlap of the two variables has a one-to-one relationship to the squared correlation between them. This approach breaks down, however, with three-variables. Making the overlap between the pairs of variables consistent with their squared bivariate correlations often results in the overlap of two of these variables with the third variable that is not the same as the variance of the third variable accounted for by the other two variables...
2018: PloS One
https://www.readbyqxmd.com/read/29771930/perspectives-of-human-verification-via-binary-qrs-template-matching-of-single-lead-and-12-lead-electrocardiogram
#12
Vessela Krasteva, Irena Jekova, Ramun Schmid
OBJECTIVE: This study aims to validate the 12-lead electrocardiogram (ECG) as a biometric modality based on two straightforward binary QRS template matching characteristics. Different perspectives of the human verification problem are considered, regarding the optimal lead selection and stability over sample size, gender, age, heart rate (HR). METHODS: A clinical 12-lead resting ECG database, including a population of 460 subjects with two-session recordings (>1 year apart) is used...
2018: PloS One
https://www.readbyqxmd.com/read/29771729/self-regulation-and-executive-functioning-as-related-to-survival-in-motor-neuron-disease-preliminary-findings
#13
Natasha E Garcia-Willingham, Abbey R Roach, Edward J Kasarskis, Suzanne C Segerstrom
OBJECTIVE: Disease progression varies widely among patients with motor neuron disease (MND). Patients with MND and coexisting dementia have shorter survival. However, implications of mild cognitive and behavioral difficulties are unclear. The present study examined the relative contribution of executive functioning and self-regulation difficulties on survival over a 6-year period among patients with MND, who scored largely within normal limits on cognitive and behavioral indices. METHODS: Patients with MND (N=37, age=59...
May 16, 2018: Psychosomatic Medicine
https://www.readbyqxmd.com/read/29771283/adolescents-at-high-risk-of-obesity-show-greater-striatal-response-to-increased-sugar-content-in-milkshakes
#14
Grace E Shearrer, Eric Stice, Kyle S Burger
Background: Children of overweight or obese parents are at a high risk of developing obesity. Objective: This study sought to examine the underlying neural factors related to parental obesity risk and the relative impact of sugar and fat when consuming a palatable food, as well as the impact of obesity risk status on brain response to appetizing food images. Design: With the use of functional MRI, the responses of 108 healthy-weight adolescents [mean ± SD body mass index (kg/m2): 20...
May 16, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29770474/improving-medication-safety-for-home-nursing-clients-a-prospective-observational-study-of-a-novel-clinical-pharmacy-service-the-visiting-pharmacist-vip-study
#15
C Y Lee, C Beanland, D Goeman, N Petrie, B Petrie, F Vise, J Gray, R A Elliott
WHAT IS KNOWN AND OBJECTIVE: Polypharmacy, medication errors and adverse events are common in older people receiving home nursing medication management support. Access to clinical pharmacists is limited. In Australia, few home nursing clients receive a general practitioner (GP)-initiated pharmacist-led Home Medicines Review, despite their eligibility and community nurses' (CN) efforts to facilitate this. An integrated home nursing clinical pharmacy service, in which CNs directly referred clients to a pharmacist, was therefore developed and piloted...
May 16, 2018: Journal of Clinical Pharmacy and Therapeutics
https://www.readbyqxmd.com/read/29769802/who-height-charts-can-be-safely-substituted-when-calculating-bp-z-scores-in-a-north-american-clinic-setting
#16
Celia J Rodd, Daniel L Metzger, Atul K Sharma
Objectives: The Public Health Agency of Canada has officially adopted growth charts from the World Health Organization (WHO); nevertheless, North American blood pressure (BP) Z-scores and percentiles still depend on height Z-scores based on growth charts from the US Centers for Disease Control (CDC), which may differ significantly, particularly in toddlers. Since many practitioners simply replace CDC height scores with WHO equivalents for diagnosing hypertension, we explore the impact of this substitution on BP Z-scores in real-world BPs measured on more than 22,000 children aged 2 to 18 years...
May 2018: Paediatrics & Child Health
https://www.readbyqxmd.com/read/29769711/author-correction-evidence-for-a-fe-3-rich-pyrolitic-lower-mantle-from-al-fe-bearing-bridgmanite-elasticity-data
#17
A Kurnosov, H Marquardt, D J Frost, T Boffa Ballaran, L Ziberna
In Extended Data Table 1 of this Letter, some of the elastic constants were reported incorrectly. This occurred as a result of an error in the script used to generate the numbers. The values of the elastic constants at room pressure cited in the manuscript on page 544 were derived using the same erroneous script, and the correct values and 1σ-uncertainties in the last given digit are C11 = 461.3(17) GPa instead of 462.7(17) GPa; C22 = 509.7(26) GPa instead of 504.9(26) GPa; C33 = 425.7(5) GPa instead of 426...
May 16, 2018: Nature
https://www.readbyqxmd.com/read/29769292/a-genome-wide-assay-specifies-only-grea-as-a-transcription-fidelity-factor-in-escherichia-coli
#18
Charles C Traverse, Howard Ochman
Although mutations are the basis for adaptation and heritable genetic change, transient errors occur during transcription at rates that are orders of magnitude higher than the mutation rate. High rates of transcription errors can be detrimental by causing the production of erroneous proteins that need to be degraded. Two transcription fidelity factors, GreA and GreB, have previously been reported to stimulate the removal of errors that occur during transcription, and a third fidelity factor, DksA, is thought to decrease the error rate through an unknown mechanism...
May 16, 2018: G3: Genes—Genomes—Genetics
https://www.readbyqxmd.com/read/29769151/real-time-automated-detection-of-ventilator-associated-events-avoiding-missed-detections-misclassifications-and-false-detections-due-to-human-error
#19
Erica S Shenoy, Eric S Rosenthal, Yu-Ping Shao, Siddharth Biswal, Manohar Ghanta, Erin E Ryan, Dolores Suslak, Nancy Swanson, Valdery Moura Junior, David C Hooper, M Brandon Westover
OBJECTIVETo validate a system to detect ventilator associated events (VAEs) autonomously and in real time.DESIGNRetrospective review of ventilated patients using a secure informatics platform to identify VAEs (ie, automated surveillance) compared to surveillance by infection control (IC) staff (ie, manual surveillance), including development and validation cohorts.SETTINGThe Massachusetts General Hospital, a tertiary-care academic health center, during January-March 2015 (development cohort) and January-March 2016 (validation cohort)...
May 17, 2018: Infection Control and Hospital Epidemiology
https://www.readbyqxmd.com/read/29768633/evaluating-the-efficiency-and-safety-of-speech-recognition-within-a-commercial-electronic-health-record-system-a-replication-study
#20
Tobias Hodgson, Farah Magrabi, Enrico Coiera
OBJECTIVE:  To conduct a replication study to validate previously identified significant risks and inefficiencies associated with the use of speech recognition (SR) for documentation within an electronic health record (EHR) system. METHODS:  Thirty-five emergency department clinicians undertook randomly allocated clinical documentation tasks using keyboard and mouse (KBM) or SR using a commercial EHR system. The experiment design, setting, and tasks (E2) replicated an earlier study (E1), while technical integration issues that may have led to poorer SR performance were addressed...
April 2018: Applied Clinical Informatics
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