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https://www.readbyqxmd.com/read/29232274/from-theory-to-practice-the-diuretic-potential-of-sacubitril-valsartan-a-tale-of-2-patients
#1
Sabrina M Hormann, Lindsay E Davis, Elizabeth K Pogge
BACKGROUND: Heart failure prevalence continues to rise in the United States causing significant morbidity and mortality and costing billions in healthcare expenditures. Consensus guidelines updated in 2016 recommend an angiotensin receptor-neprilysin inhibitor (ARNi) as a therapeutic option in lieu of an angiotensin-converting enzyme inhibitor or angiotensin receptor blocker for the management of stage C heart failure with reduced ejection fraction (HFrEF). For chronic HFrEF patients with New York Heart Association class II or III symptoms tolerating an angiotensin-converting enzyme inhibitor/angiotensin receptor blocker, a change in therapy to an ARNi is recommended to further reduce morbidity and mortality...
December 11, 2017: Journal of Cardiovascular Nursing
https://www.readbyqxmd.com/read/29231739/phospholipase-a2-induced-degradation-and-release-from-lipid-containing-polymersomes
#2
Mudassar Mumtaz Virk, Erik Reimhult
Hybrid vesicles, comprising blends of amphiphilic block copolymers and phospholipids, have attracted significant attention recently due to their unique combination of chemical and physical properties. We report a method to make unilanellar hybrid vesicles with diameters of 100 nm by mixing polybutadiene-block-poly(ethylene oxide) and phosphocholine lipids using a combination of solvent inversion and sonication. We show that homogeneous hybrid vesicles are formed when one component is a minor fraction. At compositions with balanced mass fractions, separate populations of similarly sized pure liposomes and hybrid vesicles were observed...
December 12, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29231065/serum-interleukin-6-levels-as-an-indicator-of-aseptic-meningitis-among-children-with-enterovirus-71-induced-hand-foot-and-mouth-disease
#3
Joo Young Lee, Minji Son, Jin Han Kang, Ui Yoon Choi
OBJECTIVES: The enterovirus EV71 is a major pathogen of hand, foot, and mouth disease (HFMD) in children. Aseptic meningitis is the most common neurologic complication of EV71-induced HFMD. Lumbar puncture is a crucial procedure in the diagnosis of aseptic meningitis. It is often performed based on physicians' clinical suspicion. A diagnostic method that can aid in deciding whether this procedure should be performed is necessary. Cytokines are speculated to be associated with neurologic complications...
December 12, 2017: Postgraduate Medicine
https://www.readbyqxmd.com/read/29230136/managing-the-adult-patient-with-short-bowel-syndrome
#4
Carol Rees Parrish, John K DiBaise
Short bowel syndrome (SBS) is a malabsorptive disorder associated with significant morbidity and mortality, reduced quality of life, and high health care costs. Managing the patient with SBS requires an understanding of gastrointestinal anatomy and physiology; a dedicated multidisciplinary team; and the coordination of dietary, fluid, pharmacologic, and comorbid disease management. This article provides an overview of the current state of management of SBS, including a practical approach to optimizing the care and quality of life of the adult patient with SBS...
October 2017: Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/29229637/elucidating-the-pharmacokinetics-pharmacodynamics-of-aerosolized-colistin-against-multidrug-resistant-acinetobacter-baumannii-and-klebsiella-pneumoniae-in-a-mouse-lung-infection-model
#5
Yu-Wei Lin, Qi Tony Zhou, Mei-Ling Han, Ke Chen, Nikolas J Onufrak, Jiping Wang, John D Turnidge, Benjamin P Howden, Alan Forrest, Hak-Kim Chan, Jian Li
Pharmacokinetics/pharmacodynamics (PK/PD) of aerosolized colistin was investigated against Acinetobacter baumannii and Klebsiella pneumoniae over 24 h in a neutropenic mouse lung infection model. Dose fractionation studies were performed over 2.64 to 23.8 mg/kg/day, and the data were fitted to a sigmoid inhibitory model. AUC/MIC in the epithelial lining fluid was the most predictive PK/PD index for aerosolized colistin against both pathogens. Our study provides important pharmacological information for optimizing aerosolized colistin...
December 11, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29229331/an-integrated-precipitation-and-ion-exchange-chromatography-process-for-antibody-manufacturing-process-development-strategy-and-continuous-chromatography-exploration
#6
Steffen Großhans, Gang Wang, Christian Fischer, Jürgen Hubbuch
In the past decades, research was carried out to find cost-efficient alternatives to Protein A chromatography as a capture step in monoclonal antibody (mAb) purification processes. In this work, polyethylene glycol (PEG) precipitation has shown promising results in the case of mAb yield and purity. Especially with respect to continuous processing, PEG precipitation has many advantages, like low cost of goods, simple setup, easy scalability, and the option to handle perfusion reactors. Nevertheless, replacing Protein A has the disadvantage of renouncing a platform unit operation as well...
December 6, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29229228/factors-influencing-norvancomycin-concentration-in-plasma-and-cerebrospinal-fluid-in-patients-after-craniotomy-and-dosing-guideline-a-population-approach
#7
Xingang Li, Yuanxing Wu, Shusen Sun, Qiang Wang, Zhigang Zhao
PURPOSE: Antibacterial spectrum and activity of norvancomycin are comparable with vancomycin, and it has been widely used in China. Norvancomycin can penetrate into the cerebrospinal fluid (CSF) through the damaged blood-brain barrier in patients after craniotomy. Because higher inter-individual variability was observed, we aimed to identify factors related to drug concentration to guide clinicians with norvancomycin dosing. METHODS: After craniotomy, patients with an indwelling catheter in the operational area/ventricle were intravenously administered norvancomycin...
December 8, 2017: Clinical Therapeutics
https://www.readbyqxmd.com/read/29229170/care-of-the-pediatric-patient-on-chronic-dialysis
#8
REVIEW
Annabelle N Chua, Bradley A Warady
Optimal care of the pediatric end-stage renal disease (ESRD) patient on chronic dialysis is complex and requires multidisciplinary care as well as patient/caregiver involvement. The dialysis team, along with the family and patient, should all play a role in choosing the dialysis modality which best meets the patient's needs, taking into account special considerations and management issues that may be particularly pertinent to children who receive peritoneal dialysis or hemodialysis. Meticulous attention to dialysis adequacy in terms of solute and fluid removal, as well as to a variety of clinical manifestations of ESRD, including anemia, growth and nutrition, chronic kidney disease-mineral bone disorder, cardiovascular health, and neurocognitive development, is essential...
November 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29228911/intrapartum-factors-associated-with-neonatal-hypoxic-ischemic-encephalopathy-a-case-controlled-study
#9
Vanessa E Torbenson, Mary Catherine Tolcher, Kate M Nesbitt, Christopher E Colby, Sherif A El-Nashar, Bobbie S Gostout, Amy L Weaver, Michaela E Mc Gree, Abimbola O Famuyide
BACKGROUND: Neonatal encephalopathy (NE) affects 2-4/1000 live births with outcomes ranging from negligible neurological deficits to severe neuromuscular dysfunction, cerebral palsy and death. Hypoxic ischemic encephalopathy (HIE) is the sub cohort of NE that appears to be driven by intrapartum events. Our objective was to identify antepartum and intrapartum factors associated with the development of neonatal HIE. METHODS: Hospital databases were searched using relevant diagnosis codes to identify infants with neonatal encephalopathy...
December 11, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/29228043/novel-systems-for-the-application-of-isolated-tensile-compressive-and-shearing-stimulation-of-distraction-callus-tissue
#10
Nicholaus Meyers, Julian Schülke, Anita Ignatius, Lutz Claes
BACKGROUND: Distraction osteogenesis is a procedure widely used for the correction of large bone defects. However, a high complication rate persists, likely due to insufficient stability during maturation. Numerical fracture healing models predict bone regeneration under different mechanical conditions allowing fixation stiffness optimization. However, most models apply a linear elastic material law inappropriate for the transient stresses/strains present during limb lengthening or segment transport...
2017: PloS One
https://www.readbyqxmd.com/read/29226667/enhanced-thermal-conductivity-of-graphene-nanoplatelet-polymer-nanocomposites-fabricated-via-supercritical-fluid-assisted-in-situ-exfoliation
#11
S Mahdi Hamidinejad, Raymond K M Chu, Biao Zhao, Chul B Park, Tobin Filleter
As electronic devices become increasingly miniaturized, their thermal management becomes critical. Efficient heat dissipation guarantees their optimal performance and service life. Graphene nanoplatelets (GnPs) have excellent thermal properties that show promise for use in fabricating commercial polymer nanocomposites with high thermal conductivity. Herein an industrially-viable technique for manufacturing a new class of lightweight GnP-polymer nanocomposites with high thermal conductivity is presented. Using this method, high-density-polyethylene (HDPE)-GnP nanocomposites with a microcellular structure are fabricated by melt mixing, which is followed by supercritical fluid (SCF)-treatment and injection molding foaming which adds an extra layer of design flexibility...
December 11, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29224926/fully-automated-detection-and-quantification-of-macular-fluid-in-oct-using-deep-learning
#12
Thomas Schlegl, Sebastian M Waldstein, Hrvoje Bogunovic, Franz Endstraßer, Amir Sadeghipour, Ana-Maria Philip, Dominika Podkowinski, Bianca S Gerendas, Georg Langs, Ursula Schmidt-Erfurth
PURPOSE: Development and validation of a fully automated method to detect and quantify macular fluid in conventional OCT images. DESIGN: Development of a diagnostic modality. PARTICIPANTS: The clinical dataset for fluid detection consisted of 1200 OCT volumes of patients with neovascular age-related macular degeneration (AMD, n = 400), diabetic macular edema (DME, n = 400), or retinal vein occlusion (RVO, n = 400) acquired with Zeiss Cirrus (Carl Zeiss Meditec, Dublin, CA) (n = 600) or Heidelberg Spectralis (Heidelberg Engineering, Heidelberg, Germany) (n = 600) OCT devices...
December 8, 2017: Ophthalmology
https://www.readbyqxmd.com/read/29224167/dna-methylation-analysis-of-free-circulating-dna-in-body-fluids
#13
Maria Jung, Glen Kristiansen, Dimo Dietrich
Circulating cell-free DNA in body fluids is an analyte of great interest in basic and clinical research. The analyses of DNA methylation and hydroxymethylation patterns in body fluids might allow one to determine the certain state of a disease, in particular of cancer. DNA methylation biomarkers in liquid biopsies, i.e. blood plasma samples, may help optimizing personalized therapy for individual patients. DNA methylation analyses of specific loci usually require a bisulfite conversion of the DNA, which requires a sufficiently high amount of DNA at the appropriate concentration...
2018: Methods in Molecular Biology
https://www.readbyqxmd.com/read/29222475/suitability-of-various-chromatographic-and-spectroscopic-techniques-for-analysis-and-kinetic-degradation-study-of-trelagliptin
#14
Wafaa A Zaghary, Shereen Mowaka, Mostafa A Hassan, Bassam M Ayoub
Multifaceted comparative analytical methods for trelagliptin (TRL) were investigated, applied to ZAFATEK tablets and HPLC-UV was selected for a degradation kinetic study. UPLC-MS/MS (Method I), UPLC-UV (Method II), HPLC-UV (Method III), UHPLC-UV (Method IV) and direct UV (Method V) methods were developed. Methods (I-V) showed satisfactory results using TRL concentration ranges of 50-800 ng/mL, 2.5-80 μg/mL, 5-100 μg/mL, 5-100 μg/mL and 5-50 μg/mL, respectively. Multiple Reaction Monitoring (MRM) of the transition pairs of m/z 358...
December 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29221867/modelling-ordered-packed-beds-of-spheres-the-importance-of-bed-orientation-and-the-influence-of-tortuosity-on-dispersion
#15
Fabian Dolamore, Conan Fee, Simone Dimartino
Ordered packing has previously been considered for porous media applications in the industrial and analytical worlds, with implementation constrained only by the lack of feasible fabrication methods. Additive manufacturing now provides the answer to this limitation, which leads to the novel domain of customized ordered packing and a variety of optimized geometries. In this work, the chromatographic behaviour of ordered configurations of particles was described using computational fluid dynamics methods based on the Lattice Boltzmann Model...
December 5, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/29220744/sensitive-detection-of-pyoverdine-with-an-electrochemical-sensor-based-on-electrochemically-generated-graphene-functionalized-with-gold-nanoparticles
#16
Islem Gandouzi, Mihaela Tertis, Andreea Cernat, Amina Bakhrouf, Maria Coros, Stela Pruneanu, Cecilia Cristea
The design and development of an electrochemical sensor for the sensitive and selective determination of pyoverdine, a virulence factor secreted by Pseudomonas aeruginosa, bacteria involved in nosocomial infections is presented in this work. The presence of pyoverdine in water and body fluids samples can be directly linked to the presence of the Pseudomonas bacteria, thus being a nontoxic and low cost marker for the detection of water pollution as well as for the biological contamination of other media. The sensor was elaborated using layer-by-layer technique for the deposition of a graphene‑gold nanoparticles composite film on the graphite-based screen printed electrode, from aqueous suspension...
December 5, 2017: Bioelectrochemistry
https://www.readbyqxmd.com/read/29220343/two-techniques-to-sample-non-volatiles-in-breath-exemplified-by-methadone
#17
Göran Ljungkvist, Shahid Ullah, Åsa Tinglev, Karina Stein, Björn Bake, Per Larsson, Ann-Charlotte Almstrand, Emilia Viklund, Oscar Hammar, Sören Sandqvist, Olof Beck, Anna-Carin Olin
The particles in exhaled breath provide a promising matrix for the monitoring of pathological processes in the airways, and also allow exposure to exogenous compounds to be to assessed. The collection is easy to perform and is non-invasive. The aim of the present study is to assess if an exogenous compound-methadone-is distributed in the lining fluid of small airways, and to compare two methods for collecting methadone in particles in exhaled breath. Exhaled particles were collected from 13 subjects receiving methadone maintenance treatment...
December 8, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/29219787/modification-of-the-biomedicus-centrifugal-pump-to-provide-continuous-irrigation-for-neuroendoscopy-technical-note
#18
Joyce Koueik, Brandon G Rocque, Jordan Henry, Taryn Bragg, Jennifer Paul, Bermans J Iskandar
Continuous irrigation is an important adjunct for successful intraventricular endoscopy, particularly for complex cases. It allows better visualization by washing out blood and debris, improves navigation by expanding the ventricles, and assists with tissue dissection. A method of irrigation delivery using a centrifugal pump designed originally for cardiac surgery is presented. The BioMedicus centrifugal pump has the desirable ability to deliver a continuous laminar flow of fluid that excludes air from the system...
December 8, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29219627/non-oncotic-properties-of-albumin-a-multidisciplinary-vision-about-the-implications-for-critically-ill-patients
#19
Ricard Ferrer, Xavier Mateu, Emilio Maseda, Juan Carlos Yébenes, César Aldecoa, Candelaria De Haro, Juan Carlos Ruiz-Rodriguez, José Garnacho-Montero
Effective resuscitation with human albumin solutions is achieved with less fluid than with crystalloid solutions. However, the role of albumin in today's critical care unit is also linked to its multiple pharmacological effects. Areas covered: The potential clinical benefits of albumin in select populations of critically ill patients like sepsis seem related to immunomodulatory and anti-inflammatory effects, antibiotic transportation and endothelial stabilization. Albumin transports many drugs used in critically ill patients...
December 8, 2017: Expert Review of Clinical Pharmacology
https://www.readbyqxmd.com/read/29218397/can-we-better-predict-the-biologic-behavior-of-incidental-ipmn-a-comprehensive-analysis-of-molecular-diagnostics-and-biomarkers-in-intraductal-papillary-mucinous-neoplasms-of-the-pancreas
#20
Kiara A Tulla, Ajay V Maker
PURPOSE: Predicting the biologic behavior of intraductal papillary mucinous neoplasm (IPMN) remains challenging. Current guidelines utilize patient symptoms and imaging characteristics to determine appropriate surgical candidates. However, the majority of resected cysts remain low-risk lesions, many of which may be feasible to have under surveillance. We herein characterize the most promising and up-to-date molecular diagnostics in order to identify optimal components of a molecular signature to distinguish levels of IPMN dysplasia...
December 7, 2017: Langenbeck's Archives of Surgery
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