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https://www.readbyqxmd.com/read/28169559/challenges-in-diagnosing-medication-resins-in-surgical-pathology-specimens-a-crystal-clear-review-guide
#1
Raul S Gonzalez, Stephen M Lagana, Oliver Szeto, Christina A Arnold
CONTEXT: -Medication resins, including Kayexalate, sevelamer, and bile acid sequestrants, can be encountered in gastrointestinal tract specimens. Their classic histologic appearances have been well documented, but pathologist recognition of the resins is 75%, patient history is not always available, and atypical morphologic findings are sometimes present. OBJECTIVE: -To offer a succinct overview of resins in the gastrointestinal tract, including typical and atypical appearances, in order to serve as a quick reference guide...
February 7, 2017: Archives of Pathology & Laboratory Medicine
https://www.readbyqxmd.com/read/28165238/well-defined-molybdenum-oxo-alkyl-complex-supported-on-silica-by-surface-organometallic-chemistry-a-highly-active-olefin-metathesis-precatalyst
#2
Nicolas Merle, Frédéric Le Quéméner, Yassine Bouhoute, Kai C Szeto, Aimery De Mallmann, Samir Barman, Manoja K Samantaray, Laurent Delevoye, Régis M Gauvin, Mostafa Taoufik, Jean-Marie Basset
The well-defined silica-supported molybdenum oxo alkyl species (≡SiO-)MoO(CH2(t)Bu)3 was selectively prepared by grafting of MoO(CH2(t)Bu)3Cl onto partially dehydroxylated silica (silica700) using the surface organometallic chemistry approach. This surface species was fully characterized by elemental analysis and DRIFT, solid-state NMR, and EXAFS spectroscopy. This new material is related to the active species of industrial supported MoO3/SiO2 olefin metathesis catalysts. It displays very high activity in propene self-metathesis at mild (turnover number = 90 000 after 25 h)...
February 6, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28153967/endotoxemia-in-peritoneal-dialysis-patients-a-pilot-study-to-examine-the-role-of-intestinal-perfusion-and-congestion
#3
Claire Grant, Laura Harrison, Caroline Hoad, Luca Marciani, Eleanor Cox, Charlotte Buchanan, Carolyn Costigan, Susan Francis, Ka-Bik Lai, Cheuk-Chun Szeto, Penny Gowland, Christopher McIntyre
Endotoxemia is common in advanced chronic kidney disease and is particularly severe in those receiving dialysis. In hemodialysis patients, translocation from the bowel occurs as a consequence of recurrent circulatory stress leading to a reduction in circulating splanchnic volume and increased intestinal permeability. Peritoneal dialysis (PD) patients are often volume expanded and have continuous direct immersion of bowel in fluid; these may also be important factors in endotoxin translocation and would suggest different therapeutic strategies to improve it...
January 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/28153193/low-gdp-solution-and-glucose-sparing-strategies-for-peritoneal-dialysis
#4
REVIEW
Cheuk Chun Szeto, David W Johnson
Long-term exposure to a high glucose concentration in conventional peritoneal dialysis (PD) solution has a number of direct and indirect (via glucose degradation products [GDP]) detrimental effects on the peritoneal membrane, as well as systemic metabolism. Glucose- or GDP-sparing strategies often are hypothesized to confer clinical benefits to PD patients. Icodextrin (glucose polymer) solution improves peritoneal ultrafiltration and reduces the risk of fluid overload, but these beneficial effects are probably the result of better fluid removal rather than being glucose sparing...
January 2017: Seminars in Nephrology
https://www.readbyqxmd.com/read/28117618/association-between-abnormal-arterial-stiffness-and-cardiovascular-risk-factors-in-people-with-chronic-spinal-cord-injury
#5
Masae Miyatani, S Mohammad Alavinia, Maggie Szeto, Cameron Moore, B Catharine Craven
Aims To describe the association between cardiovascular risk factors and abnormal arterial stiffness, defined by a carotid-femoral pulse wave velocity ≥ 10 m/s, in patients with chronic spinal cord injury (SCI). Methods Ninety consenting adults with chronic SCI (C1-T10 ASIA Impairment Scale A-D) participated in this cross-sectional study. The cardiovascular risk factors considered included age, sex, duration of injury, neurological level of injury (C1-T1, tetraplegia; T2-T12, paraplegia), age at injury, impairment scale category, supine resting systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rate, leisure time physical activity, treated hypertension, treated hyperlipidemia, diabetes, lipid profiles, fasting blood glucose, glycated hemoglobin, and C reactive protein...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28102470/neuronal-ryanodine-receptors-in-development-and-aging
#6
REVIEW
Nawaf Abu-Omar, Jogita Das, Vivian Szeto, Zhong-Ping Feng
Ryanodine receptors (RyRs) are intracellular calcium-release channels found on the endoplasmic reticulum of all cells. All three RyR isoforms, RyR1-3, are expressed in the brain, with RyR2 predominating. RyRs are localized within the soma, axons, dendritic spines, and presynaptic terminals of neurons. RyRs are highly expressed in the cerebellum, hippocampus, olfactory region, basal ganglia, and cerebral cortex. During the physiological processes of development and aging, the intracellular calcium homeostasis is largely regulated by RyRs...
January 19, 2017: Molecular Neurobiology
https://www.readbyqxmd.com/read/28102082/characterization-of-the-molecular-mechanisms-underlying-the-chronic-phase-of-stroke-in-a-cynomolgus-monkey-model-of-induced-cerebral-ischemia
#7
Henry C H Law, Samuel S W Szeto, Quan Quan, Yun Zhao, Zaijun Zhang, Olga Krakovska, Leong Ting Lui, Chengyou Zheng, Simon Ming Yuen Lee, K W Michael Siu, Yuqiang Wang, Ivan K Chu
Stroke is one of the main causes of mortality and long-term disability worldwide. The pathophysiological mechanisms underlying this disease are not well understood, particularly in the chronic phase after the initial ischemic episode. In this study, a Macaca fascicularis stroke model consisting of two sample groups, as determined by MRI-quantified infarct volumes as a measure of the stroke severity 28 days after the ischemic episode, was evaluated using qualitative and quantitative proteomics analyses. By using multiple online multidimensional liquid chromatography platforms, 8790 non-redundant proteins that condensed to 5223 protein groups at 1% global false discovery rate (FDR)...
January 19, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28063595/the-mitochondrial-targeted-peptide-ss-31-improves-glomerular-architecture-in-mice-of-advanced-age
#8
Mariya T Sweetwyne, Jeffrey W Pippin, Diana G Eng, Kelly L Hudkins, Ying Ann Chiao, Matthew D Campbell, David J Marcinek, Charles E Alpers, Hazel H Szeto, Peter S Rabinovitch, Stuart J Shankland
Although age-associated changes in kidney glomerular architecture have been described in mice and man, the mechanisms are unknown. It is unclear if these changes can be prevented or even reversed by systemic therapies administered at advanced age. Using light microscopy and transmission electron microscopy, our results showed glomerulosclerosis with injury to mitochondria in glomerular epithelial cells in mice aged 26 months (equivalent to a 79-year-old human). To test the hypothesis that reducing mitochondrial damage in late age would result in lowered glomerulosclerosis, we administered the mitochondrial targeted peptide, SS-31, to aged mice...
January 4, 2017: Kidney International
https://www.readbyqxmd.com/read/28049625/regulation-of-the-macrophage-oxytocin-receptor-in-response-to-inflammation
#9
Angela Szeto, Ni Sun-Suslow, Armando J Mendez, Rosa I Hernandez, Klaus V Wagner, Philip M McCabe
It has been demonstrated that the neuropeptide oxytocin (OT) attenuates oxidative stress and inflammation in macrophages. In the current study, we examined the role of inflammation on the expression of the oxytocin receptor (OXTR). We hypothesized that OXTR expression is increased during the inflammation though a nuclear factor kappa B (NF-κB) mediated pathway, thus responding as an acute phase protein. Inflammation was induced by treating macrophages (human primary, THP-1, and murine) with lipopolysaccharide (LPS) and monitored by expression of IL-6...
January 3, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28035745/one-amino-acid-in-mouse-activated-factor-vii-defines-its-endothelial-protein-c-receptor-epcr-binding-and-modulates-its-epcr-dependent-hemostatic-activity-in-vivo
#10
G Pavani, S M Zintner, L Ivanciu, J C Small, K A Stafford, J H Szeto, P Margaritis
: Essentials The lack of factor (F) VIIa-endothelial protein C receptor (EPCR) binding in mice is unresolved. A single substitution of Leu4 to Phe in mouse FVIIa (mFVIIa) enables its interaction with EPCR. mFVIIa with a Phe4 shows EPCR binding-dependent enhanced hemostatic function in vivo vs. mFVIIa. Defining the FVIIa-EPCR interaction in mice allows for further investigating its biology in vivo. SUMMARY: Background Human activated factor VII (hFVIIa), which is used in hemophilia treatment, binds to the endothelial protein C (PC) receptor (EPCR) with unclear hemostatic consequences...
December 30, 2016: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28017714/long-term-valve-performance-of-tavr-and-savr-a-report-from-the-partner-i-trial
#11
Melissa A Daubert, Neil J Weissman, Rebecca T Hahn, Philippe Pibarot, Rupa Parvataneni, Michael J Mack, Lars G Svensson, Deepika Gopal, Samir Kapadia, Robert J Siegel, Susheel K Kodali, Wilson Y Szeto, Raj Makkar, Martin B Leon, Pamela S Douglas
OBJECTIVES: The aim of this study was to evaluate the long-term performance of transcatheter aortic valve replacement (TAVR) and surgical aortic valve replacement (SAVR) through longitudinal echocardiographic analysis. BACKGROUND: The long-term performance of the SAPIEN TAVR is not well-described. Therefore, we examined the hemodynamic and valvular profile of the SAPIEN TAVR over 5 years. METHODS: All patients receiving TAVR or SAVR with first post-implant (FPI) and 5-year echoes were analyzed for aortic valve (AV) peak velocity, AV mean gradient, AV area, peak left ventricular (LV) outflow tract and in-stent velocities, Doppler velocity index, aortic regurgitation (AR), LV mass index, stroke volume index, and cardiac index...
December 8, 2016: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/27970206/tct-80-characterizing-the-incidence-and-predictors-of-paravalvular-regurgitation-after-transcatheter-aortic-valve-replacement-tavr-and-its-impact-on-outcomes-a-study-of-the-society-of-thoracic-surgeons-american-college-of-cardiology-transcatheter-valve-therapies
#12
Saif Anwaruddin, Ajay Kirtane, Vinod Thourani, Sreekanth Vemulapalli, Pratik Manandhar, Howard Herrmann, Joseph Bavaria, Jay Giri, Prashanth Vallabhajosyula, Birgitte Krogsgaard Andersen, Wilson Szeto
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970068/tct-691-sex-specific-differences-after-transcatheter-or-surgical-aortic-valve-replacement-in-intermediate-risk-patients-an-analysis-from-the-partner-2-randomized-trial
#13
Jonathan White, Darshan Doshi, Mathew Williams, Molly Szerlip, John Squiers, John Webb, Rebecca Hahn, Ajay Kirtane, Claire Litherland, David Cohen, E Murat Tuzcu, Wilson Szeto, Alan Zajarias, S Chris Malaisrie, Maria Alu, Craig Smith, Martin Leon, Michael Mack, Susheel Kodali
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970048/tct-672-outcomes-in-the-commercial-use-of-self-expanding-prostheses-in-transcatheter-aortic-valve-replacement-a-comparison-of-the-medtronic-corevalve-and-evolut-r-platforms-in-the-society-of-thoracic-surgeons-american-college-of-cardiology-transcatheter-valve
#14
Paul Sorajja, Susheel Kodali, Michael Reardon, Wilson Szeto, Stanley Chetcuti, James Hermiller, David Adams, Jeffrey Popma
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27970038/tct-661-the-clinical-impact-of-diabetes-mellitus-on-outcomes-after-transcatheter-aortic-valve-replacement-insights-from-the-partner-ii-sapien-3-cohort
#15
Yigal Abramowitz, Brian Lindman, Tarun Chakravarty, Hasanian Jilaihawi, Samir Kapadia, Wilson Szeto, Philippe Pibarot, Vasilis Babaliaros, Howard Herrmann, Richard Smalling, Lars Svensson, Torsten Vahl, Vinod Thourani, Susheel Kodali, Craig Smith, Yiran Zhang, Maria Alu, Michael Mack, Martin Leon, Raj Makkar
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969714/tct-36-frailty-in-intermediate-risk-patients-undergoing-transcatheter-or-surgical-aortic-valve-replacement-cut-points-and-relationship-with-outcomes-an-analysis-of-the-placement-of-aortic-transcatheter-valves-partner-2-cohort-a-randomized-trial
#16
Philip Green, Mark Russo, Suzanne Arnold, Darshan Doshi, Augusto Pichard, Wilson Szeto, Raj Makkar, Vasilis Babaliaros, William Fearon, Lars Svensson, John Webb, Tamim Nazif, Alan Zajarias, Nishath Quader, Rupa Parvataneni, Ajay Kirtane, David Cohen, Michael Mack, Martin Leon
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27969473/ps01-05-early-and-persistent-oligoclonal-t-cell-expansion-correlates-with-durable-response-to-anti-pd1-therapy-in-nsclc-topic-medical-oncology
#17
Sope Olugbile, Kazuma Kiyotani, Jae-Hyun Park, Philip Hoffman, Livia Szeto, Jyoti Patel, Everett Vokes, Yusuke Nakamura
No abstract text is available yet for this article.
November 2016: Journal of Thoracic Oncology
https://www.readbyqxmd.com/read/27926855/temporally-programmed-cd8%C3%AE-dc-activation-enhances-combination-cancer-immunotherapy
#18
Alice Tzeng, Monique J Kauke, Eric F Zhu, Kelly D Moynihan, Cary F Opel, Nicole J Yang, Naveen Mehta, Ryan L Kelly, Gregory L Szeto, Willem W Overwijk, Darrell J Irvine, K Dane Wittrup
Numerous synergistic cancer immunotherapy combinations have been identified, but the effects of relative dose timing are rarely considered. In established syngeneic mouse tumor models, we found that staggering interferon-α (IFNα) administration after, rather than before or simultaneously with, serum-persistent interleukin-2 (IL-2) and tumor-specific antibody significantly increased long-term survival. Successful combination therapy required IFNα-induced activation of cross-presenting CD8α(+) dendritic cells (DCs) following the release of antigenic tumor debris by the IL-2- and antibody-mediated immune response...
December 6, 2016: Cell Reports
https://www.readbyqxmd.com/read/27920129/chronic-inhibition-of-renal-outer-medullary-potassium-channel-not-only-prevented-but-also-reversed-development-of-hypertension-and-end-organ-damage-in-dahl-salt-sensitive-rats
#19
Xiaoyan Zhou, Michael J Forrest, Wanda Sharif-Rodriguez, Gail Forrest, Daphne Szeto, Olga Urosevic-Price, Yonghua Zhu, Andra S Stevenson, Yuchen Zhou, Sloan Stribling, Maya Dajee, Shawn P Walsh, Alexander Pasternak, Kathleen A Sullivan
The renal outer medullary potassium (ROMK) channel mediates potassium recycling and facilitates sodium reabsorption through the Na(+)/K(+)/2Cl(-) cotransporter in the loop of Henle and potassium secretion at the cortical collecting duct. Evidence from the phenotype of humans and rodents with functional ROMK deficiency supports the contention that selective ROMK inhibitors (ROMKi) will represent a novel diuretic with potential of therapeutic benefit for hypertension. ROMKi have recently been synthesized by Merck & Co, Inc...
December 5, 2016: Hypertension
https://www.readbyqxmd.com/read/27890121/prevalence-and-risk-factors-associated-with-musculoskeletal-complaints-among-users-of-mobile-handheld-devices-a-systematic-review
#20
REVIEW
Yanfei Xie, Grace Szeto, Jie Dai
This systematic review aimed at evaluating the prevalence and risk factors for musculoskeletal complaints associated with mobile handheld device use. Pubmed, Medline, Web of Science, CINAHL and Embase were searched. The methodological quality of included studies was assessed. Strength of evidence for risk factors was determined based on study designs, methodological quality and consistency of results. Five high-quality, eight acceptable-quality and two low-quality peer-reviewed articles were included. This review demonstrates that the prevalence of musculoskeletal complaints among mobile device users ranges from 1...
March 2017: Applied Ergonomics
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