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https://www.readbyqxmd.com/read/29351369/heparin-but-not-tissue-plasminogen-activator-improves-outcomes-in-dcd-liver-transplantation-in-a-porcine-model
#1
Amelia J Hessheimer, Marina Vendrell, Javier Muñoz, Ángel Ruíz, Alba Díaz, Luís Flores Sigüenza, Jorge Rodríguez Lanzilotta, Eduardo Delgado Oliver, Jose Fuster, Miquel Navasa, Juan Carlos García-Valdecasas, Pilar Taurá, Constantino Fondevila
BACKGROUND: Ischemic type biliary lesions arise most frequently after DCD liver transplantation and result in high morbidity and graft loss. Many DCD grafts are discarded out of fear for this complication. In theory, microvascular thrombi deposited during donor warm ischemia might be implicated in ITBL pathogenesis. Herein, we aim to evaluate the effects of the administration of either heparin or the fibrinolytic drug TPA as means to improve DCD liver graft quality and potentially avoid ITBL...
January 19, 2018: Liver Transplantation
https://www.readbyqxmd.com/read/29350605/in-situ-administration-of-abciximab-for-thrombus-resolution-during-intracranial-bypass-surgery-case-report
#2
Ian A Buchanan, Brian Lee, Arun P Amar, Steven L Giannotta
Abciximab is a glycoprotein IIb/IIIa receptor antagonist that functions to prevent platelet aggregation, thus reducing thrombus initiation and propagation. It has been widely used during percutaneous endovascular interventions, such as aneurysm coil embolization, angioplasty, atherectomy, and stent placement, as both a preventative and a salvage therapy. The use of abciximab in cardiac and neurosurgical procedures has been associated with a reduced incidence of ischemic complications and a decreased need for repeated intervention...
January 19, 2018: Journal of Neurosurgery
https://www.readbyqxmd.com/read/29350493/bleeding-and-thrombotic-complications-of-pediatric-liver-transplant
#3
Alexandra J Borst, Debra L Sudan, Laura A Wang, Michael J Neuss, Jennifer A Rothman, Thomas L Ortel
BACKGROUND: Pediatric patients undergoing liver transplant are at significant risk for bleeding and thrombotic complications due to the complex nature of rebalanced hemostasis in patients with liver disease. METHODS/OBJECTIVES: We reviewed records of 92 pediatric liver and multivisceral transplant cases at Duke University Medical Center between January 2009 and December 2015. The goal was to define the nature and incidence of bleeding and thrombotic complications in this cohort and define potential risk factors...
January 19, 2018: Pediatric Blood & Cancer
https://www.readbyqxmd.com/read/29350380/patients-treated-with-bivalirudin-still-at-higher-risk-of-stent-thrombosis-a-comprehensive-meta-analysis-of-randomized-clinical-trials-of-bivalirudin-and-heparin-for-percutaneous-coronary-interventions
#4
Stefan Grajek, Michał Michlak, Adrian Gwizdała, Aleksander Araszkiewicz, Marek Grygier, Jarosław Hiczkiewicz, Maciej Lesiak
BACKGROUND: Although the current practice guidelines recommend using both heparin and bivalirudin for percutaneous coronary interventions (PCI), the research data are ambiguous. AIM: To compare the impact of bivalirudin- and heparin on major clinical endpoints in PCI patients with particular emphasis on periprocedural stent thrombosis. METHODS: Total of 18 randomised clinical trials involving 41752 subjects were included. The endpoints comprised: net adverse clinical event (NACE: death, myocardial infarction [MI], unscheduled revascularisation, major bleeding [MB]), major adverse cardiovascular event (MACE: death, MI or stroke), acute/subacute stent thrombosis (ST)...
January 19, 2018: Kardiologia Polska
https://www.readbyqxmd.com/read/29348993/delayed-presentation-of-cerebral-air-embolism-from-a-left-atrial-esophageal-fistula-a-case-report-and-review-of-the-literature
#5
Catherine Peterson, Clay Elswick, Vicki Diaz, R Shane Tubbs, Marc Moisi
Air embolism developing from an atrial-esophageal fistula that was created as a complication from an atrial ablation procedure is a rare, yet usually fatal diagnosis. Neurologic manifestations such as meningitis, altered mental status, seizures, strokes, transient ischemic attacks (TIAs), psychiatric changes, and coma can ensue. Imaging of the brain might reveal infarcts, cerebral edema, as well as signs of pneumocephalus. This case describes a 42-year-old male with recent cardiac ablation procedure at an outside hospital for refractory atrial fibrillation (A-fib) who presented with altered mental status, dyspnea and diaphoresis...
November 15, 2017: Curēus
https://www.readbyqxmd.com/read/29348482/egfr-activation-triggers-cellular-hypertrophy-and-lysosomal-disease-in-naglu-depleted-cardiomyoblasts-mimicking-the-hallmarks-of-mucopolysaccharidosis-iiib
#6
Valeria De Pasquale, Antonio Pezone, Patrizia Sarogni, Alfonso Tramontano, Gabriele Giacomo Schiattarella, Vittorio Enrico Avvedimento, Simona Paladino, Luigi Michele Pavone
Mucopolysaccharidosis (MPS) IIIB is an inherited lysosomal storage disease caused by the deficiency of the enzyme α-N-acetylglucosaminidase (NAGLU) required for heparan sulfate (HS) degradation. The defective lysosomal clearance of undigested HS results in dysfunction of multiple tissues and organs. We recently demonstrated that the murine model of MPS IIIB develops cardiac disease, valvular abnormalities, and ultimately heart failure. To address the molecular mechanisms governing cardiac dysfunctions in MPS IIIB, we generated a model of the disease by silencing NAGLU gene expression in H9C2 rat cardiomyoblasts...
January 18, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29346619/spurious-thrombocytopenia-in-automated-platelet-count
#7
Lixia Zhang, Jian Xu, Li Gao, Shiyang Pan
Spurious thrombocytopenia is a well-known phenomenon observed with the widespread use of hematology analyzers (HAs). In this study, 355 specimens with pseudo-thrombocytopenia (PTCP) were evaluated via epidemiology, identification, remedies, and platelet (PLT) count. Data showed that anticoagulants such as citrate and/or heparin-dependent PTCP (16.0%) became increasingly common, whereas ethylenediaminetetraacetic acid (EDTA)-induced PTCP (49.1%) remained the most frequent. We note that that nearly half of the patients with PTCP had veritable decreased PLT counts, even after PLT levels had been corrected...
January 13, 2018: Laboratory Medicine
https://www.readbyqxmd.com/read/29346400/the-mechanisms-how-heparin-affects-the-tumor-cell-induced-vegf-and-chemokine-release-from-platelets-to-attenuate-the-early-metastatic-niche-formation
#8
Jan Moritz Ponert, Svenja Schwarz, Reza Haschemi, Jens Müller, Bernd Pötzsch, Gerd Bendas, Martin Schlesinger
Metastasis is responsible for the majority of cancer associated fatalities. Tumor cells leaving the primary tumor and entering the blood flow immediately interact with platelets. Activated platelets contribute in different ways to cancer cell survival and proliferation, e.g. in formation of the early metastatic niche by release of different growth factors and chemokines. Here we show that a direct interaction between platelets and MV3 melanoma or MCF7 breast cancer cells induces platelet activation and a VEGF release in citrated plasma that cannot be further elevated by the coagulation cascade and generated thrombin...
2018: PloS One
https://www.readbyqxmd.com/read/29346209/the-society-of-thoracic-surgeons-the-society-of-cardiovascular-anesthesiologists-and-the-american-society-of-extracorporeal-technology-clinical-practice-guidelines-anticoagulation-during-cardiopulmonary-bypass
#9
Linda Shore-Lesserson, Robert A Baker, Victor A Ferraris, Philip E Greilich, David Fitzgerald, Philip Roman, John W Hammon
Despite more than a half century of "safe" cardiopulmonary bypass (CPB), the evidence base surrounding the conduct of anticoagulation therapy for CPB has not been organized into a succinct guideline. For this and other reasons, there is enormous practice variability relating to the use and dosing of heparin, monitoring heparin anticoagulation, reversal of anticoagulation, and the use of alternative anticoagulants. To address this and other gaps, The Society of Thoracic Surgeons, the Society of Cardiovascular Anesthesiologists, and the American Society of Extracorporeal Technology developed an Evidence Based Workgroup...
February 2018: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29344510/ablation-of-fgfr2-in-fibroblasts-ameliorates-kidney-fibrosis-after-ischemia-reperfusion-injury-in-mice
#10
Zhuo Xu, Chunsun Dai
Background: Fibroblast growth factors (FGFs) are heparin-binding proteins involved in a variety of biological processes. However, the role and mechanisms of FGF/FGFR2 signaling in fibroblast activation and kidney fibrosis need further investigation. Methods: In this study, a mouse model with fibroblast-specific FGFR2 gene disruption was generated. The knockouts were born normal and no kidney dysfunction or histological abnormality was found within 2 months after birth...
December 2017: Kidney Diseases
https://www.readbyqxmd.com/read/29343861/sensing-native-protein-solution-structures-using-a-solid-state-nanopore-unraveling-the-states-of-vegf
#11
Nitinun Varongchayakul, Diana Huttner, Mark W Grinstaff, Amit Meller
Monitoring individual proteins in solution while simultaneously obtaining tertiary and quaternary structural information is challenging. In this study, translocation of the vascular endothelial growth factor (VEGF) protein through a solid-state nanopore (ssNP) produces distinct ion-current blockade amplitude levels and durations likely corresponding to monomer, dimer, and higher oligomeric states. Upon changing from a non-reducing to a reducing condition, ion-current blockage events from the monomeric state dominate, consistent with the expected reduction of the two inter-chain VEGF disulfide bonds...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343583/structural-study-of-the-c-terminal-domain-of-non-structural-protein-1-from-japanese-encephalitis-virus
#12
Thanalai Poonsiri, Gareth S A Wright, Michael S Diamond, Lance Turtle, Tom Solomon, Svetlana V Antonyuk
Japanese encephalitis virus (JEV) is a mosquito-transmitted Flavivirus that is closely related to other emerging viral pathogens including dengue, West Nile (WNV) and Zika viruses. JEV infection can result in meningitis and encephalitis, which in severe cases cause permanent brain damage and death. JEV occurs predominantly in rural areas throughout Southeast Asia, the Pacific islands and the Far East, causing around 68,000 cases worldwide each year. In this study, we present a 2.1 Å resolution crystal structure of the C-terminal β-ladder domain of JEV non-structural protein 1 (NS1-C)...
January 17, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29342377/bivalirudin-versus-heparin-monotherapy-in-myocardial-infarction
#13
(no author information available yet)
No abstract text is available yet for this article.
January 18, 2018: New England Journal of Medicine
https://www.readbyqxmd.com/read/29342116/vegf-signaling-in-neurological-disorders
#14
REVIEW
Joon W Shim, Joseph R Madsen
Vascular endothelial growth factor (VEGF) is a potent growth factor playing diverse roles in vasculogenesis and angiogenesis. In the brain, VEGF mediates angiogenesis, neural migration and neuroprotection. As a permeability factor, excessive VEGF disrupts intracellular barriers, increases leakage of the choroid plexus endothelia, evokes edema, and activates the inflammatory pathway. Recently, we discovered that a heparin binding epidermal growth factor like growth factor (HB-EGF)-a class of EGF receptor (EGFR) family ligands-contributes to the development of hydrocephalus with subarachnoid hemorrhage through activation of VEGF signaling...
January 17, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29341932/synthetic-extracellular-matrix-mimic-hydrogel-improves-efficacy-of-mesenchymal-stromal-cell-therapy-for-ischemic-cardiomyopathy
#15
Maria Chiara Ciuffreda, Giuseppe Malpasso, Cindy Chokoza, Deon Bezuidenhout, Kyle P Goetsch, Manuela Mura, Federica Pisano, Neil H Davies, Massimiliano Gnecchi
BACKGROUND: Mesenchymal stromal cells (MSC) repair infarcted hearts mainly through paracrine mechanisms. Low cell engraftment limits the release of soluble paracrine factors (SF) over time and, consequently, MSC efficacy. We tested whether a synthetic extracellular matrix mimic, a hydrogel containing heparin (H-HG), could ameliorate MSC engraftment and binding/release of SF, thus improving MSC therapy efficacy. METHODS AND RESULTS: In vitro, rat bone-marrow MSC (rBM-MSC) were seeded and grown into H-HG...
January 13, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29341600/combination-of-heparin-binding-peptide-and-heparin-cell-surface-coatings-for-mesenchymal-stem-cell-spheroid-assembly
#16
Jennifer Lei, William L Murphy, Johnna S Temenoff
Microtissues containing multiple cell types have been used in both in vitro models and in vivo tissue repair applications. However, to improve through-put, there is a need to develop a platform that supports self-assembly of a large number of 3D microtissues containing multiple cell types in a dynamic suspension system. Thus, the objective of this study was to exploit the binding interaction between the negatively charged glycosaminoglycan, heparin, and a known heparin binding peptide to establish a method that promotes assembly of mesenchymal stem cell (MSC) spheroids into larger aggregates...
January 17, 2018: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29341502/advances-in-intravesical-therapy-for-bladder-pain-syndrome-bps-interstitial-cystitis-ic
#17
REVIEW
En Meng, Yu-Chao Hsu, Yao-Chi Chuang
Bladder pain syndrome (BPS)/interstitial cystitis (IC) is a chronic symptom complex that may cause bothersome storage symptoms and pain or discomfort of the bladder, adversely affecting a patient's quality of life. The etiology of IC/BPS remains unclear, and its cause may be multifactorial. Diagnosis of IC/BPS is based on clinical features, and the possibility of other conditions must be ruled out first. Although no definitive treatment is currently available for IC/BPS, various intravesical therapies are used for IC/BPS, including heparin, hyaluronic acid, chondroitin sulfate, pentosan polysulfate, dimethylsulfoxide, liposomes, and botulinum onabotulinumtoxinA (BoNT-A)...
January 2018: Lower Urinary Tract Symptoms
https://www.readbyqxmd.com/read/29341194/generation-of-red-drum-sciaenops-ocellatus-hematology-reference-intervals-with-a-focus-on-identified-outliers
#18
Kendal E Harr, Kristina Deak, Steven A Murawski, Drury R Reavill, Ryan A Takeshita
BACKGROUND: The Deepwater Horizon (DWH) oil spill in 2010 released millions of barrels of crude oil into the northern Gulf of Mexico, exposing numerous species of animals to the toxic components of oil. A comprehensive assessment of morbidity and mortality caused by DWH oil exposure was undertaken by the DWH Natural Resource Damage Trustees to characterize ecosystem damages. OBJECTIVES: This study aimed to characterize normal hematologic RIs in red drum fish with blood cell descriptions, and to demonstrate the importance of identifying and removing outliers when generating RI...
January 17, 2018: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/29340875/thromboelastography-based-anticoagulation-management-during-extracorporeal-membrane-oxygenation-a-safety-and-feasibility-pilot-study
#19
Mauro Panigada, Giacomo E Iapichino, Matteo Brioni, Giovanna Panarello, Alessandro Protti, Giacomo Grasselli, Giovanna Occhipinti, Cristina Novembrino, Dario Consonni, Antonio Arcadipane, Luciano Gattinoni, Antonio Pesenti
BACKGROUND: There is no consensus on the management of anticoagulation during extracorporeal membrane oxygenation (ECMO). ECMO is currently burdened by a high rate of hemostatic complications, possibly associated with inadequate monitoring of heparin anticoagulation. This study aims to assess the safety and feasibility of an anticoagulation protocol for patients undergoing ECMO based on thromboelastography (TEG) as opposed to an activated partial thromboplastin time (aPTT)-based protocol...
January 16, 2018: Annals of Intensive Care
https://www.readbyqxmd.com/read/29340361/a-curcumin-loaded-polymeric-micelle-as-a-carrier-of-a-microrna-21-antisense-oligonucleotide-for-enhanced-anti-tumor-effects-in-a-glioblastoma-animal-model
#20
Xiaonan Tan, Gyeungyun Kim, Dahee Lee, Jungju Oh, Minkyung Kim, Chunxian Piao, Jaewon Lee, Min Sang Lee, Ji Hoon Jeong, Minhyung Lee
A glioblastoma is a common primary brain tumor that expresses microRNA-21 (miR-21), which inhibits the expression of pro-apoptotic genes such as phosphatase and tensin homologue (PTEN) and programmed cell death 4 (PDCD4). Therefore, an antisense-oligonucleotide against miR-21 (miR21ASO) could have therapeutic effects for glioblastomas. In this study, curcumin was loaded into deoxycholic acid-conjugated polyethylenimine (DP) micelles. The curcumin-loaded DP micelle (DP-Cur) was evaluated as a carrier for the combined delivery of curcumin and miR21ASO...
January 17, 2018: Biomaterials Science
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