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https://www.readbyqxmd.com/read/29129689/ascorbic-acid-attenuates-endothelial-permeability-triggered-by-cell-free-hemoglobin
#1
Jamie L Kuck, Julie A Bastarache, Ciara M Shaver, Joshua P Fessel, Sergey I Dikalov, James M May, Lorraine B Ware
BACKGROUND: Increased endothelial permeability is central to shock and organ dysfunction in sepsis but therapeutics targeted to known mediators of increased endothelial permeability have been unsuccessful in patient studies. We previously reported that cell-free hemoglobin (CFH) is elevated in the majority of patients with sepsis and is associated with organ dysfunction, poor clinical outcomes and elevated markers of oxidant injury. Others have shown that Vitamin C (ascorbate) may have endothelial protective effects in sepsis...
November 9, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29128068/b-lymphoblastic-leukemia-minimal-residual-disease-assessment-by-flow-cytometric-analysis
#2
REVIEW
Aaron C Shaver, Adam C Seegmiller
Among the most thoroughly evaluated modalities for assessment of minimal residual disease (MRD) in B acute lymphoblastic leukemia is multiparameter flow cytometry. Flow cytometric evaluation of MRD for B-ALL requires complete understanding of the immunophenotype of hematogones, the normal counterpart of leukemic B lymphoblasts. Assessment of multiple flow cytometry markers, in concert with each other in multidimensional histograms, is necessary to distinguish hematogones from malignant blasts. Emerging therapies targeting CD19 and other B-cell markers can disrupt the most frequently MRD assessment, requiring a revised approach as use of targeted therapies becomes widespread...
December 2017: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/29108450/comparing-provider-and-client-preferences-for-hiv-prevention-services-in-south-africa-among-men-who-have-sex-with-men
#3
John Shaver, Patrick Sullivan, Aaron Siegler, Alex de Voux, Nancy Phaswana-Mafuya, Linda-Gail Bekker, Stefan D Baral, Andrea L Wirtz, Chris Beyrer, Ben Brown, Rob Stephenson
Combination prevention efforts are now recommended toward reducing HIV incidence among men who have sex with men (MSM). Understanding the perceptions of both MSM and service providers is critical to informing the development of prevention packages and ultimately improving intervention effectiveness. This study assessed the preferences of MSM and health service providers in the administration of HIV-prevention efforts. Qualitative data were gathered from a series of separate MSM and health care provider focus groups in 2 South African cities...
January 1, 2017: Journal of the International Association of Providers of AIDS Care
https://www.readbyqxmd.com/read/29089437/transient-hypoxemia-chronically-disrupts-maturation-of-preterm-fetal-ovine-subplate-neuron-arborization-and-activity
#4
Evelyn McClendon, Daniel C Shaver, Kiera Degener-O'Brien, Xi Gong, Thuan Nguyen, Anna Hoerder-Suabedissen, Zoltán Molnár, Claudia Mohr, Ben D Richardson, David J Rossi, Stephen A Back
Preterm infants are at risk for a broad spectrum of neurobehavioral disabilities associated with diffuse disturbances in cortical growth and development. During brain development, subplate neurons (SPNs) are a largely transient population that serves a critical role to establish functional cortical circuits. By dynamically integrating into developing cortical circuits they assist in consolidation of intra and extracortical circuits. Although SPNs reside in close proximity to cerebral white matter, which is particularly vulnerable to oxidative stress, the susceptibility of SPNs remains controversial...
October 31, 2017: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/29078880/impact-of-complications-on-length-of-stay-in-elective-laparoscopic-colectomies
#5
Mary Megan Mrdutt, Claire L Isbell, J Scott Thomas, Courtney N Shaver, Rahila Essani, Rajalakshmi Warrier, Harry Troy Papaconstantinou
BACKGROUND: Length of hospital stay (LOS) is an indirect measure of surgical quality and a surrogate for cost. The impact of postoperative complications on LOS following elective colorectal surgery is not well defined. The purpose of this study is to determine the contribution of specific complications towards LOS in elective laparoscopic colectomy patients. MATERIALS AND METHODS: American College of Surgeon's National Surgical Quality Improvement Program database (2011-2014) was queried for patients undergoing elective laparoscopic partial colectomy with primary anastomosis...
November 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/29072964/thoracoscopic-rib-resection-in-children
#6
Dheidan Mufreh Alshammari, Isabelle Talon, Julien Rod, Anne Schneider, Frederic Lavrand, Christian Piolat, Thomas Gelas, Frederic Hameury, Marina Sica, Philippe Gicquel, Valerie Flaum, François Becmeur
OBJECTIVE: The authors present a multicenter retrospective series of different benign rib lesions in children operated on using thoracoscopy. MATERIALS AND METHODS: Between 2005 and 2015, 17 rib resections were performed thoracoscopically, in four French departments of pediatric surgery. Of these 17 cases, 13 exostoses, 2 endochondromas, 1 synostosis, and 1 Cyriax's syndrome were noted. Inclusion criteria were benign tumors or rib anomalies such as synostosis, in children younger than the age of 18 years, and thoracoscopy...
October 26, 2017: Journal of Laparoendoscopic & Advanced Surgical Techniques. Part A
https://www.readbyqxmd.com/read/29024847/how-children-remember-the-strange-situation-the-role-of-attachment
#7
Yoojin Chae, Miranda Goodman, Gail S Goodman, Natalie Troxel, Kelly McWilliams, Ross A Thompson, Phillip R Shaver, Keith F Widaman
This study tested predictions from Bowlby's attachment theory about children's memory and suggestibility. Young children (3-5years old, N=88; 76% Caucasians) and their parents took part in the Strange Situation Procedure, a moderately distressing event and "gold standard" for assessing children's attachment quality. The children were then interviewed about what occurred during the event. Children's age and attachment security scores positively predicted correct information in free recall and accuracy in answering specific questions...
February 2018: Journal of Experimental Child Psychology
https://www.readbyqxmd.com/read/28986821/endothelial-glycocalyx-degradation-is-more-severe-in-patients-with-non-pulmonary-sepsis-compared-to-pulmonary-sepsis-and-associates-with-risk-of-ards-and-other-organ-dysfunction
#8
Laura S Murphy, Nancy Wickersham, J Brennan McNeil, Ciara M Shaver, Addison K May, Julie A Bastarache, Lorraine B Ware
BACKGROUND: Disruption of the endothelial glycocalyx contributes to acute lung injury in experimental sepsis but has not been well studied in humans. To study glycocalyx degradation in sepsis-induced ARDS, we measured plasma levels of syndecan-1, a marker for glycocalyx degradation. METHODS: The present study is a retrospective observational study of 262 ventilated medical ICU patients at risk of ARDS due to severe sepsis and APACHE II ≥ 25. Plasma syndecan-1 was measured at study enrollment...
October 6, 2017: Annals of Intensive Care
https://www.readbyqxmd.com/read/28974141/improving-medication-practices-for-persons-with-intellectual-and-developmental-disability-educating-direct-support-staff-using-simulation-debriefing-and-reflection
#9
Kathy Auberry, Katherine Wills, Carrie Shaver
Direct support professionals (DSPs) are increasingly active in medication administration for people with intellectual and developmental disabilities, thus supplementing nursing and family caretakers. Providing workplace training for DSPs is often the duty of nursing personnel. This article presents empirical data and design suggestions for including simulations, debriefing, and written reflective practice during in-service training for DSPs in order to improve DSPs' skills and confidence related to medication administration...
January 1, 2017: Journal of Intellectual Disabilities: JOID
https://www.readbyqxmd.com/read/28951086/trends-in-pneumococcal-meningitis-hospitalizations-following-the-introduction-of-the-13-valent-pneumococcal-conjugate-vaccine-in-the-united-states
#10
David M Jacobs, Francine Yung, Emily Hart, Melanie N H Nguyen, Amy Shaver
BACKGROUND: The 13-valent pneumococcal conjugate vaccine (PCV13) was introduced in 2010 in the U.S. and its impact on pneumococcal meningitis (PM) is unknown. We assessed the impact of PCV13 on PM hospitalization rates 4years after the vaccine was introduced. METHODS: This was a retrospective analysis of the National Inpatient Sample from 2008-2014. Patients with an ICD-9-CM code for PM (320.1) were identified and rates calculated using US Census data as the denominator...
October 27, 2017: Vaccine
https://www.readbyqxmd.com/read/28945473/cell-free-hemoglobin-mediated-increases-in-vascular-permeability-a-novel-mechanism-of-primary-graft-dysfunction-and-a-new-therapeutic-target
#11
Ciara M Shaver, Nancy Wickersham, J Brennan McNeil, Hiromasa Nagata, Gillian Sills, Jamie L Kuck, David R Janz, Julie A Bastarache, Lorraine B Ware
RATIONALE: Cell-free hemoglobin (CFH) is a potent oxidant associated with poor clinical outcomes in a variety of clinical settings. Recent studies suggest that acetaminophen (APAP), a specific hemoprotein reductant, can abrogate CFH-mediated oxidative injury and organ dysfunction. Preoperative plasma CFH levels are independently associated with primary graft dysfunction (PGD) after lung transplant ( 1 ). OBJECTIVES: Our objectives were to determine whether CFH would increase lung vascular permeability in the isolated perfused human lung and whether APAP would limit these effects...
September 2017: Annals of the American Thoracic Society
https://www.readbyqxmd.com/read/28915038/frustrated-lewis-pair-polymers-as-responsive-self-healing-gels
#12
Meng Wang, Fabio Nudelman, Rebecca R Matthes, Michael P Shaver
Steric bulk prevents the formation of strong bonds between Lewis acids and bases in frustrated Lewis pairs (FLPs), where latent reactivity makes these reagents transformative in small molecule activations and metal-free catalysis. However, their use as a platform for developing materials chemistry is unexplored. Here we report a fully macromolecular FLP, built from linear copolymers that containing either a sterically encumbered Lewis base or Lewis acid as a pendant functional group. The target functional copolymers were prepared by a controlled radical copolymerization of styrene with designer boron or phosphorus containing monomers...
October 11, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28862997/a-novel-optically-transparent-rf-shielding-for-fully-integrated-pet-mri-systems
#13
C Parl, A Kolb, A M Schmid, H F Wehrl, J A Disselhorst, P D Soubiran, D Stricker-Shaver, B J Pichler
Preclinical imaging benefits from simultaneous acquisition of high-resolution anatomical and molecular data. Additionally, PET/MRI systems can provide functional PET and functional MRI data. To optimize PET sensitivity, we propose a system design that fully integrates the MRI coil into the PET system. This allows positioning the scintillators near the object but requires an optimized design of the MRI coil and PET detector. It further requires a new approach in realizing the radiofrequency (RF) shielding. Thus, we propose the use of an optically transparent RF shielding material between the PET scintillator and the light sensor, suppressing the interference between both systems...
September 1, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28822050/nuances-of-morphology-in-myelodysplastic-diseases-in-the-age-of-molecular-diagnostics
#14
REVIEW
Aaron C Shaver, Adam C Seegmiller
Morphologic dysplasia is an important factor in diagnosis of myelodysplastic syndrome (MDS). However, the role of dysplasia is changing as new molecular genetic and genomic technologies take a more prominent place in diagnosis. This review discusses the role of morphology in the diagnosis of MDS and its interactions with cytogenetic and molecular testing. Recent changes in diagnostic criteria have attempted to standardize approaches to morphologic diagnosis of MDS, recognizing significant inter-observer variability in assessment of dysplasia...
October 2017: Current Hematologic Malignancy Reports
https://www.readbyqxmd.com/read/28818404/report-of-the-ishlt-working-group-on-primary-lung-graft-dysfunction-part-iii-mechanisms-a-2016-consensus-group-statement-of-the-international-society-for-heart-and-lung-transplantation
#15
EDITORIAL
Andrew E Gelman, Andrew J Fisher, Howard J Huang, Maher A Baz, Ciara M Shaver, Thomas M Egan, Micheal S Mulligan
No abstract text is available yet for this article.
October 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28795749/poly-styrene-co-butadiene-random-copolymer-thin-films-and-nanostructures-on-a-mica-surface-morphology-and-contact-angles-of-nanodroplets
#16
Jake McClements, Cosimo Buffone, Michael P Shaver, Khellil Sefiane, Vasileios Koutsos
The self-assembly of poly(styrene-co-butadiene) random copolymers on mica surfaces was studied by varying solution concentrations and polymer molecular weights. Toluene solutions of the poly(styrene-co-butadiene) samples were spin coated onto a mica surface and the resulting polymer morphology was investigated by atomic force microscopy. At higher concentrations, thin films formed with varying thicknesses; some dewetting was observed which depended on the molecular weight. Total dewetting did not occur despite the polymer's low glass transition temperature...
September 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/28771567/muscle-oxygenation-as-an-indicator-of-shock-severity-in-patients-with-suspected-severe-sepsis-or-septic-shock
#17
Kenneth A Schenkman, David J Carlbom, Eileen M Bulger, Wayne A Ciesielski, Dana M Fisk, Kellie L Sheehan, Karin M Asplund, Jeremy M Shaver, Lorilee S L Arakaki
PURPOSE: The aim of this pilot study was to evaluate the potential of a new noninvasive optical measurement of muscle oxygenation (MOx) to identify shock severity in patients with suspected sepsis. METHODS: We enrolled 51 adult patients in the emergency department (ED) who presented with possible sepsis using traditional Systematic Inflammatory Response Syndrome criteria or who triggered a "Code Sepsis." Noninvasive MOx measurements were made from the first dorsal interosseous muscles of the hand once potential sepsis/septic shock was identified, as soon as possible after admission to the ED...
2017: PloS One
https://www.readbyqxmd.com/read/28765851/ring-opening-polymerisation-of-lactide-with-uranium-iv-and-cerium-iv-phosphinoaryloxide-complexes
#18
Fern Sinclair, Johann A Hlina, Jordann A L Wells, Michael P Shaver, Polly L Arnold
The C3-symmetric uranium(iv) and cerium(iv) complexes Me3SiOM(OAr(P))3, M = U (1), Ce (2), OAr(P) = OC6H2-6-(t)Bu-4-Me-2-PPh2, have been prepared and the difference between these 4f and 5f congeners as initiators for the ring opening polymerisation (ROP) of l-lactide is compared. The poorly controlled reactivity of the homoleptic analogue U(OAr(P))4 (3) demonstrates the importance of the M-OSiMe3 initiating group. The incorporation of a nickel atom in 1 to form the U-Ni heterobimetallic complex Me3SiOU(OAr(P))3Ni (4) may be the first example of the use of the inverse trans influence to switch the reactivity of a complex...
August 22, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28746717/an-incidental-hypervascular-retroperitoneal-mass
#19
Patricia W Costacurta, Aaron C Shaver, Kamran Idrees
No abstract text is available yet for this article.
September 1, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28732401/can-brook-trout-survive-climate-change-in-large-rivers-if-it-rains
#20
Eric R Merriam, Rodrigo Fernandez, J Todd Petty, Nicolas Zegre
We provide an assessment of thermal characteristics and climate change vulnerability for brook trout (Salvelinus fontinalis) habitats in the upper Shavers Fork sub-watershed, West Virginia. Spatial and temporal (2001-2015) variability in observed summer (6/1-8/31) stream temperatures was quantified in 23 (9 tributary, 14 main-stem) reaches. We developed a mixed effects model to predict site-specific mean daily stream temperature from air temperature and discharge and coupled this model with a hydrologic model to predict future (2016-2100) changes in stream temperature under low (RCP 4...
December 31, 2017: Science of the Total Environment
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