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https://www.readbyqxmd.com/read/28340484/engineering-of-layered-lipid-encapsulated-drug-nanoparticles-through-spray-drying
#1
Mahak Sapra, Y S Mayya, Chandra Venkataraman
Drug-containing nanoparticles have been synthesized through the spray-drying of submicron droplet aerosols by using matrix materials such as lipids and biopolymers. Understanding layer formation in composite nanoparticles is essential for the appropriate engineering of particle substructures. The present study developed a droplet-shrinkage model for predicting the solid-phase formation of two non-volatile solutes-stearic acid lipid and a set of drugs, by considering molecular volume and solubility. Nanoparticle formation was simulated to define the parameter space of material properties and process conditions for the formation of a layered structure with the preferential accumulation of the lipid in the outer layer...
March 18, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28340481/metabolic-profiling-of-tyrosine-tryptophan-and-glutamate-in-human-urine-using-gas-chromatography-tandem-mass-spectrometry-combined-with-single-spe-cleanup
#2
Hyun Ju Shin, Na Hyun Park, Wonwoong Lee, Man Ho Choi, Bong Chul Chung, Jongki Hong
The tyrosine, tryptophan, and glutamate metabolic pathways play key roles on pathological state of neuronal functions and the change of their levels in biological systems reflects the progress degree of neuronal diseases. Comprehensive profiling of these metabolites is important to find new biomarkers for diagnosis or prognosis of various neuronal diseases. However, the overall profiling analysis of various neurochemicals in biological sample is confronted with several limitations due to their low concentration and physicochemical properties and the coexistence of matrices...
March 16, 2017: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/28340457/dermal-exposure-of-applicators-to-chlorpyrifos-on-rice-farms-in-ghana
#3
Albert Atabila, Dung Tri Phung, Jonathan N Hogarh, Paul Osei-Fosu, Ross Sadler, Des Connell, Cordia Chu
Studies evaluating dermal exposure to pesticides among applicators in tropical countries have largely been conducted using the patch dosimetry and hand wiping/washing techniques. This study used the more accurate whole-body dosimetry technique to evaluate dermal exposure to chlorpyrifos among applicators on rice farms in Ghana. The exposure levels were plotted as Cumulative Probability Distribution (CPD). Total Dermal Exposure (TDE) of chlorpyrifos among the median exposed and the 5% highly exposed groups during a spray event were 24 mg and 48 mg, respectively...
March 16, 2017: Chemosphere
https://www.readbyqxmd.com/read/28340405/population-pharmacokinetic-modeling-of-furosemide-in-patients-with-hypertension-and-fluid-overload-conditions
#4
Devender Kodati, Narsimhareddy Yellu
BACKGROUND: Furosemide is a loop diuretic drug frequently indicated in hypertension and fluid overload conditions such as congestive heart failure and hepatic cirrhosis. OBJECTIVE: The purpose of the study was to establish a population pharmacokinetic model for furosemide in Indian hypertensive and fluid overload patients, and to evaluate effects of covariates on the volume of distribution (V/F) and oral clearance (CL/F) of furosemide. METHODS: A total of 188 furosemide plasma sample concentrations from 63 patients with hypertension or fluid overload conditions were collected in this study...
January 15, 2017: Pharmacological Reports: PR
https://www.readbyqxmd.com/read/28340239/hypertension-in-dialysis-patients-a-consensus-document-by-the-european-renal-and-cardiovascular-medicine-eureca-m-working-group-of-the-european-renal-association-european-dialysis-and-transplant-association-era-edta-and-the-hypertension-and-the-kidney-working
#5
Pantelis A Sarafidis, Alexandre Persu, Rajiv Agarwal, Michel Burnier, Peter de Leeuw, Charles J Ferro, Jean-Michel Halimi, Gunnar H Heine, Michel Jadoul, Faical Jarraya, Mehmet Kanbay, Francesca Mallamaci, Patrick B Mark, Alberto Ortiz, Gianfranco Parati, Roberto Pontremoli, Patrick Rossignol, Luis Ruilope, Patricia Van der Niepen, Raymond Vanholder, Marianne C Verhaar, Andrzej Wiecek, Gregoire Wuerzner, Gérard M London, Carmine Zoccali
In patients with end-stage renal disease (ESRD) treated with haemodialysis or peritoneal dialysis, hypertension is common and often poorly controlled. Blood pressure (BP) recordings obtained before or after haemodialysis display a J- or U-shaped association with cardiovascular events and survival, but this most likely reflects the low accuracy of these measurements and the peculiar haemodynamic setting related to dialysis treatment. Elevated BP detected by home or ambulatory BP monitoring is clearly associated with shorter survival...
March 13, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28340230/determinants-of-opioid-prescribing-for-nonmalignant-chronic-pain-in-us-outpatient-settings
#6
Rafia S Rasu, Maureen E Knell
Study Objectives.:  Identify prescribing trends for opioid use in non-malignant chronic pain (NMCP) from the National Ambulatory Medical Care Survey (NAMCS). Determine predictors of opioid use based on patient-specific factors. Design.:  This cross-sectional study analyzed NAMCS data from 2000 to 2007. Pain medications prescribed were retrieved using NAMCS drug codes. Multivariate logistic models examined determinants of opioid prescribing among NMCP patients...
March 14, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28340220/her2-neu-status-determination-in-breast-cancer-a-single-institutional-experience-using-a-dual-testing-approach-with-immunohistochemistry-and-fluorescence-in-situ-hybridization
#7
James P Solomon, Marie Dell'Aquila, Oluwole Fadare, Farnaz Hasteh
Objectives: According to current guidelines, either immunohistochemistry (IHC) or in situ hybridization (ISH) can be used to determine human epidermal growth factor receptor 2 (Her2/neu) status in breast carcinoma. While the guidelines explicitly delineate result interpretation, there is no consensus on the most appropriate testing algorithm. Methods: The Her2/neu statuses of 369 consecutive cases of invasive breast cancer (from 351 patients) were assessed in a dual-testing algorithm that uses both IHC and fluorescence ISH (FISH)...
March 11, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28340218/user-centered-design-of-discharge-warnings-tool-for-colorectal-surgery-patients
#8
Aanand D Naik, Molly J Horstman, Linda T Li, Michael K Paasche-Orlow, Bryan Campbell, Whitney L Mills, Levi I Herman, Daniel A Anaya, Barbara W Trautner, David H Berger
Objectives: Readmission following colorectal surgery, typically due to surgery-related complications, is common. Patient-centered discharge warnings may guide recognition of early complication signs after colorectal surgery. Materials and Methods: User-centered design of a discharge warnings tool consisted of iterative health literacy review and a heuristic evaluation with human factors and clinical experts as well as patient end users to establish content validity and usability...
March 16, 2017: Journal of the American Medical Informatics Association: JAMIA
https://www.readbyqxmd.com/read/28340201/a-systematic-review-of-the-relationship-of-physical-activity-and-health-status-in-adolescents
#9
Emily Granger, Francesco Di Nardo, Annie Harrison, Lesley Patterson, Raphael Holmes, Arpana Verma
Reduced physical activity is a known risk factor for many illnesses. Research in adolescent populations found increased physical activity levels improves objective health outcomes, but there is conflicting evidence regarding the relationship between physical activity levels and self-reported health status. To synthesise current evidence on the association between physical activity and self-reported health status in adolescents. Secondary objectives are to assess whether the relationship is dose dependant, and the appropriateness of WHO recommendations on adolescents' physical activity...
March 15, 2017: European Journal of Public Health
https://www.readbyqxmd.com/read/28340197/the-evolution-and-benefit-of-device-therapy-in-patients-listed-for-heart-transplant
#10
Bert Vandenberk, Mark Hinderks, Gabor Voros, Christophe Garweg, Johan Vanhaecke, Rik Willems
Aims: The latest 2015 ESC Guidelines on the prevention of sudden cardiac death make a Class IIa recommendation for ICD implantation in patients listed for heart transplantation. This recommendation was based on expert consensus in view of the sparsity of data. Methods and results: All patients listed for heart transplantation at the University Hospitals of Leuven from 2002 until 2014 were studied retrospectively. Exclusion criteria were age <16 years, cardiac disease other than ischaemic or dilated cardiomyopathy and re-transplantation...
March 9, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28340184/a-cross-national-comparison-of-incident-reporting-systems-implemented-in-german-and-swiss-hospitals
#11
Tanja Manser, Michael Imhof, Constanze Lessing, Matthias Briner
Objective: This study aimed to empirically compare incident reporting systems (IRS) in two European countries and to explore the relationship of IRS characteristics with context factors such as hospital characteristics and characteristics of clinical risk management (CRM). Design: We performed exploratory, secondary analyses of data on characteristics of IRS from nationwide surveys of CRM practices. Setting: The survey was originally sent to 2136 hospitals in Germany and Switzerland...
March 7, 2017: International Journal for Quality in Health Care
https://www.readbyqxmd.com/read/28340135/modeling-longitudinal-data-and-its-impact-on-survival-in-observational-nephrology-studies-tools-and-considerations
#12
Elani Streja, Leanne Goldstein, Melissa Soohoo, Yoshitsugu Obi, Kamyar Kalantar-Zadeh, Connie M Rhee
Nephrologists and kidney disease researchers are often interested in monitoring how patients' clinical and laboratory measures change over time, what factors may impact these changes, and how these changes may lead to differences in morbidity, mortality, and other outcomes. When longitudinal data with repeated measures over time in the same patients are available, there are a number of analytical approaches that could be employed to describe the trends and changes in these measures, and to explore the associations of these changes with outcomes...
March 3, 2017: Nephrology, Dialysis, Transplantation
https://www.readbyqxmd.com/read/28340096/dual-vs-single-chamber-defibrillators-for-primary-prevention-of-sudden-cardiac-death-long-term-follow-up-of-the-d%C3%A3-fibrillateur-automatique-implantable-pr%C3%A3-vention-primaire-registry
#13
Pascal Defaye, Serge Boveda, Didier Klug, Frankie Beganton, Olivier Piot, Kumar Narayanan, Marie-Cécile Périer, Daniel Gras, Laurent Fauchier, Pierre Bordachar, Vincent Algalarrondo, Dominique Babuty, Jean-Claude Deharo, Christophe Leclercq, Eloi Marijon, Nicolas Sadoul
Aims: Implantable cardioverter defibrillators (ICDs) are an effective primary prevention of sudden cardiac death. We examined whether dual-chamber (DC) ICDs confer a greater benefit than single-chamber (SC) ICDs, and compared the long-term outcomes of recipients of each type of device implanted for primary prevention. Methods and results: Between 2002 and 2012, the DAI-PP registry consecutively enrolled 1258 SC- and 1280 DC-ICD recipients at 12 French medical centres...
March 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28340092/community-based-effectiveness-trials-as-a-means-to-disseminate-evidence-based-and-culturally-responsive-behavioral-health-interventions
#14
Flavio F Marsiglia, Patricia Dustman, Mary Harthun, Chelsea Coyne Ritland, Adriana Umaña-Taylor
This article adds to the existing knowledge about innovative community-based approaches used to reduce and eliminate behavioral health disparities. Special attention is given to culturally appropriate interventions that increase access to care and that improve the quality of behavioral health services across different geographic regions and communities. Effectiveness trials are presented as appropriate tools to translate existing efficacious interventions into real-world settings. This article describes how to transition from efficacy to effectiveness, including factors essential to consider from the perspectives of university-based research teams and community-based organizations (CBOs)...
March 14, 2017: Health & Social Work
https://www.readbyqxmd.com/read/28340065/the-next-three-decades-of-the-comet-assay-a-report-of-the-11th-international-comet-assay-workshop
#15
Gudrun Koppen, Amaya Azqueta, Bertrand Pourrut, Gunnar Brunborg, Andrew R Collins, Sabine A S Langie
The International Comet Assay Workshops are a series of scientific conferences dealing with practical and theoretical aspects of the Comet Assay (single-cell gel electrophoresis)-a simple method for detecting DNA strand breaks. The first paper describing such an assay was published over 30 years ago in 1984 by Swedish researchers O. Ostling and K. J. Johanson. Appropriately, the theme for the 2015 meeting was looking to the future: 'The Next 3 Decades of the Comet Assay'. The programme included 25 oral and 43 poster presentations depicting the latest advances in technical developments as well as applications of the comet assay in genotoxicity testing (in vitro and in vivo) and biomonitoring of both humans and the environment...
March 4, 2017: Mutagenesis
https://www.readbyqxmd.com/read/28340042/effects-of-dietary-l-arginine-levels-on-small-intestine-protein-turnover-and-the-expression-of-genes-related-to-protein-synthesis-and-proteolysis-of-layers
#16
L P Miao, C Yuan, X Y Dong, X Y Zhang, M Y Zhou, X T Zou
The aim of this study was to test the effects of dietary L-arginine (Arg) levels on protein turnover in the small intestine and the expression of genes related to protein synthesis and proteolysis of laying hens. Xinyang Black commercial laying hens (n = 864, aged 217 d) were randomly distributed to 6 treatments with 4 replicates of 36 birds. The dietary treatments were corn-corn gluten meal based diets containing 0.64, 0.86, 1.03, 1.27, 1.42 and 1.66% L-Arg, respectively. Fractional protein synthesis rate (FSR) and fractional protein gain rate (FGR) in the jejunum were the highest in the 1...
March 9, 2017: Poultry Science
https://www.readbyqxmd.com/read/28340003/beighton-scores-and-cut-offs-across-the-lifespan-cross-sectional-study-of-an-australian-population
#17
Harjodh Singh, Marnee McKay, Jennifer Baldwin, Leslie Nicholson, Cliffton Chan, Joshua Burns, Claire E Hiller
Objectives.: The primary aim of this study was to evaluate generalized joint hypermobility (GJH) according to the Beighton scoring system in an Australian population. Secondary aims were to identify whether the commonly used Beighton score cut-off of ⩾4 is appropriate, and to suggest age- and sex-specific Beighton score cut-offs across the lifespan. Methods.: A thousand individuals aged 3-101 years were assessed for GJH with the Beighton scoring system. Differences between age, sex and ethnicity were investigated...
March 2, 2017: Rheumatology
https://www.readbyqxmd.com/read/28339972/factors-associated-with-sickness-absence-among-employees-with-chronic-conditions
#18
L Meng, K T Robinson, M L Smith
Background: The growing prevalence of chronic conditions in the ageing workforce has been shown to have a negative impact in terms of optimal work performance and quality of life. It is therefore important to understand the factors associated with sickness absence due to health problems. Aims: To examine the socio-demographics, health status indicators, barriers to self-care and social support associated with working adults missing work because of chronic conditions...
March 8, 2017: Occupational Medicine
https://www.readbyqxmd.com/read/28339928/opioid-use-in-chronic-pain-patients-with-chronic-kidney-disease-a-systematic-review
#19
Vittal R Nagar, Pravardhan Birthi, Sara Salles, Paul A Sloan
Objectives. : To investigate the prevalence of chronic pain and opioid management among patients with chronic kidney disease (CKD). Design.:  Systematic review. Methods.:  A systematic search was performed, including citations from 1960 to May 2015. The review highlights methodological quality assessment of the selected studies; prevalence of pain; type, dose, and reason for opioid use; effectiveness of pain control and associated adverse effects of opioids in CKD patients...
March 2, 2017: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339800/the-dark-cloud-of-recreational-drugs-and-vaping
#20
M S Blundell, P I Dargan, D M Wood
Electronic cigarettes (e-cigarettes) are increasing in popularity with 19% of UK smokers reporting to have used them. The ability to regulate the evaporation temperature in newer electronic nicotine delivery systems (ENDS) facilitates the potential for use of these devices to 'vape' cannabis, novel psychoactive substances (NPS) and other recreational drugs. Vaping cannabis does have the potential to reduce tobacco use and combustible cannabis/tobacco-related disease, but with over one-third of UK adults reporting life-time use of recreational drugs and increasing e-cigarette uptake in adolescent groups the misuse of these devices poses a serious potential public health risk...
March 9, 2017: QJM: Monthly Journal of the Association of Physicians
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