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https://www.readbyqxmd.com/read/29165995/magnetic-particle-imaging-for-highly-sensitive-quantitative-and-safe-in-vivo-gut-bleed-detection-in-a-murine-model
#1
Elaine Y Yu, Prashant Chandrasekharan, Ran Berzon, Zhi Wei Tay, Xinyi Y Zhou, Amit P Khandhar, R Matthew Ferguson, Scott J Kemp, Bo Zheng, Patrick W Goodwill, Michael F Wendland, Kannan M Krishnan, Spencer Behr, Jonathan Carter, Steven M Conolly
Gastrointestinal (GI) bleeding causes more than 300,000 hospitalizations per year in the United States. Imaging plays a crucial role in accurately locating the source of the bleed for timely intervention. Magnetic Particle Imaging (MPI) is an emerging clinically translatable imaging modality that images superparamagnetic iron-oxide (SPIO) tracers with extraordinary contrast and sensitivity. This linearly quantitative modality has zero background tissue signal and zero signal depth attenuation. MPI is also safe: there is zero ionizing radiation exposure to the patient and clinically approved tracers can be used with MPI...
November 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/29165737/management-of-hemostasis-for-pediatric-patients-on-ventricular-assist-devices
#2
Iki Adachi, Vadim Kostousov, Lisa Hensch, Martin A Chacon-Portillo, Jun Teruya
Ventricular-assist devices (VADs) have seen increased utilization in the pediatric population. Formerly, this therapeutic modality was limited to only the pulsatile VAD, EXCOR (Berlin Heart GmbH). However, the continuous flow VAD devices, HeartMate II (Abbott Inc.) and HeartWare (Medtronic Inc.), are now increasingly used in this population. Postoperatively, VAD patients are acutely anticoagulated using unfractionated heparin, often beginning 24 to 48 hours after VAD placement. Once the patient is stabilized and ready to transition to a lower acuity or outpatient setting, low-molecular-weight heparin or warfarin therapy may be instituted...
November 17, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/29165318/unidirectional-bmp2-loaded-collagen-scaffolds-induce-chondrogenic-differentiation
#3
Michiel W Pot, Laurie M G de Kroon, Peter M van der Kraan, Toin H van Kuppevelt, Willeke F Daamen
Microfracture surgery may be improved by the implantation of unidirectional collagen scaffolds that provide a template for mesenchymal stem cells to regenerate cartilage. Incorporation of growth factors in unidirectional scaffolds may further enhance cartilage regeneration. In scaffolds, immobilization of growth factors is required to prolong in vivo activity, to limit diffusion and to reduce the amount of growth factor needed for safe clinical application. We investigated the immobilization of bone morphogenetic protein 2 (BMP2) to unidirectional collagen scaffolds and the effect on in vitro chondrogenesis...
November 22, 2017: Biomedical Materials
https://www.readbyqxmd.com/read/29164967/increased-serum-midkine-levels-in-autism-spectrum-disorder-patients
#4
Erman Esnafoglu, Selma Cırrık
BACKGROUND: Midkine (MK) is a heparin binding growth factor and is involved in neurogenesis, neural development and neuroprotection. Additionally MK may contribute to cancer development and pathogenesis of neurodegenerative disorders and schizophrenia. Considering these effects of midkine, this study researched whether MK is involved in Autism spectrum disorders (ASD) pathogenesis. METHODS: We evaluated serum MK levels of 38 patients with ASD and 32 healthy control group...
November 22, 2017: International Journal of Neuroscience
https://www.readbyqxmd.com/read/29164662/laboratory-tests-for-identification-or-exclusion-of-heparin-induced-thrombocytopenia-hit-or-miss
#5
Emmanuel J Favaloro
Heparin induced thrombocytopenia (HIT) is a potentially fatal condition that arises subsequent to formation of antibodies against complexes containing heparin, usually platelet-factor 4-heparin ('anti-PF4-heparin'). Assessment for HIT involves both clinical evaluation and, if indicated, laboratory testing for confirmation or exclusion, typically using an initial immunological assay ('screening'), and only if positive, a secondary functional assay for confirmation. Many different immunological and functional assays have been developed...
November 22, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/29164398/c-reactive-protein-levels-for-early-detection-of-early-postoperative-complications-after-proximal-femoral-fracture-surgery
#6
Romain Schutz, Baptiste Boukebous, Pierre Boutroux, Pascal Guillon
INTRODUCTION: We have studied the early C-reactive protein (CRP) kinetics after proximal femoral fracture (PFF) surgery and defined a chart of CRP threshold values beyond which early postoperative complications are likely. MATERIALS AND METHODS: We have prospectively followed up a 42-patient cohort for surgical treatment by osteosynthesis or hip arthroplasty, and CRP was dosed at admission, on day 1, day 3, day 5 and then twice weekly for 30 days at the same time as a platelet count control of low molecular weight heparins...
November 21, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29164026/a-clinical-practice-guideline-for-the-management-of-patients-with-acute-spinal-cord-injury-recommendations-on-the-type-and-timing-of-anticoagulant-thromboprophylaxis
#7
Michael G Fehlings, Lindsay A Tetreault, Bizhan Aarabi, Paul Anderson, Paul M Arnold, Darrel S Brodke, Anthony S Burns, Kazuhiro Chiba, Joseph R Dettori, Julio C Furlan, Gregory Hawryluk, Langston T Holly, Susan Howley, Tara Jeji, Sukhvinder Kalsi-Ryan, Mark Kotter, Shekar Kurpad, Brian K Kwon, Ralph J Marino, Allan R Martin, Eric Massicotte, Geno Merli, James W Middleton, Hiroaki Nakashima, Narihito Nagoshi, Katherine Palmieri, Anoushka Singh, Andrea C Skelly, Eve C Tsai, Alexander Vaccaro, Jefferson R Wilson, Albert Yee, James S Harrop
Introduction: The objective of this study is to develop evidence-based guidelines that recommend effective, safe and cost-effective thromboprophylaxis strategies in patients with spinal cord injury (SCI). Methods: A systematic review of the literature was conducted to address key questions relating to thromboprophylaxis in SCI. Based on GRADE (Grading of Recommendation, Assessment, Development and Evaluation), a strong recommendation is worded as "we recommend," whereas a weaker recommendation is indicated by "we suggest...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29164021/efficacy-safety-and-timing-of-anticoagulant-thromboprophylaxis-for-the-prevention-of-venous-thromboembolism-in-patients-with-acute-spinal-cord-injury-a-systematic-review
#8
REVIEW
Paul M Arnold, James S Harrop, Geno Merli, Lindsay G Tetreault, Brian K Kwon, Steve Casha, Katherine Palmieri, Jefferson R Wilson, Michael G Fehlings, Haley K Holmer, Daniel C Norvell
Study Design: Systematic review. Objectives: The objective of this study was to answer 5 key questions: What is the comparative effectiveness and safety of (1a) anticoagulant thromboprophylaxis compared to no prophylaxis, placebo, or another anticoagulant strategy for preventing deep vein thrombosis (DVT) and pulmonary embolism (PE) after acute spinal cord injury (SCI)? (1b) Mechanical prophylaxis strategies alone or in combination with other strategies for preventing DVT and PE after acute SCI? (1c) Prophylactic inferior vena cava filter insertion alone or in combination with other strategies for preventing DVT and PE after acute SCI? (2) What is the optimal timing to initiate and/or discontinue anticoagulant, mechanical, and/or prophylactic inferior vena cava filter following acute SCI? (3) What is the cost-effectiveness of these treatment options? Methods: A systematic literature search was conducted to identify studies published through February 28, 2015...
September 2017: Global Spine Journal
https://www.readbyqxmd.com/read/29163168/atheroregressive-potential-of-the-treatment-with-a-chimeric-monoclonal-antibody-against-sulfated-glycosaminoglycans-on-pre-existing-lesions-in-apolipoprotein-e-deficient-mice
#9
Victor Brito, Katia Mellal, Karina F Zoccal, Yosdel Soto, Liliane Ménard, Roger Sarduy, Lucia H Faccioli, Huy Ong, Ana M Vázquez, Sylvie Marleau
The retention of lipoprotein particles in the intima, in particular to glycosaminoglycan side chains of proteoglycans, is a critical step in atherosclerosis initiation. Administration of chP3R99, a chimeric mouse/human monoclonal antibody inducing an anti-idiotypic network response against glycosaminoglycans was previously shown to prevent atherosclerotic lesion progression, yet its effect in the late-stage progression of lesions remains unknown. This study investigated the effect of chP3R99 at a late stage of disease development in apolipoprotein E-deficient mice and the vascular mechanisms involved...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29162678/stability-of-ceftazidime-and-heparin-in-four-different-types-of-peritoneal-dialysis-solutions
#10
Surendra Kandel, Syed Tabish R Zaidi, Troy Wanandy, Long Ming, Ronald Castelino, Kamal Sud, Rahul P Patel
BACKGROUND: Intraperitoneal (IP) administration of ceftazidime is recommended for the treatment of peritoneal dialysis-associated peritonitis (PDAP) from Pseudomonas. Patients with PDAP may also need IP heparin to overcome problems with drainage of turbid peritoneal dialysis (PD) fluids and blockage of catheters with fibrin. Physico-chemical stability of ceftazidime and heparin, and biological stability of heparin in many types of PD solutions is unknown. Therefore, we investigated the stability of ceftazidime and heparin in 4 types of PD solutions...
November 21, 2017: Peritoneal Dialysis International: Journal of the International Society for Peritoneal Dialysis
https://www.readbyqxmd.com/read/29162399/laboratory-assessment-of-activated-protein-c-resistance-factor-v-leiden-and-performance-characteristics-of-a-new-quantitative-assay
#11
REVIEW
Jean Amiral, Anne Marie Vissac, Jerard Seghatchian
Activated Protein C Resistance is mainly associated to a factor V mutation (RQ506), which induces a deficient inactivation of activated factor V by activated protein C, and is associated to an increased risk of venous and arterial thrombosis in affected individuals, caused by the prolonged activated factor V survival. Its prevalence is mainly in Caucasians (about 5%), and this mutation is absent in Africans and Asians. Presence of Factor V-Leiden is usually evidenced with clotting methods, using a two-step APTT assay performed without or with APC: prolongation of blood coagulation time is decreased if this factor is present...
November 14, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29162390/opposing-functions-of-heparanase-1-and-heparanase-2-in-cancer-progression
#12
REVIEW
Israel Vlodavsky, Miriam Gross-Cohen, Marina Weissmann, Neta Ilan, Ralph D Sanderson
Heparanase, the sole heparan sulfate (HS)-degrading endoglycosidase, regulates multiple biological activities that enhance tumor growth, metastasis, angiogenesis, and inflammation. Heparanase accomplishes this by degrading HS and thereby regulating the bioavailability of heparin-binding proteins; priming the tumor microenvironment; mediating tumor-host crosstalk; and inducing gene transcription, signaling pathways, exosome formation, and autophagy that together promote tumor cell performance and chemoresistance...
November 18, 2017: Trends in Biochemical Sciences
https://www.readbyqxmd.com/read/29161465/neuromuscular-electrical-stimulation-for-the-prevention-of-venous-thromboembolism
#13
REVIEW
Shahab Hajibandeh, Shahin Hajibandeh, George A Antoniou, James Rh Scurr, Francesco Torella
BACKGROUND: Venous thromboembolism (VTE) is a serious but preventable cause of morbidity and mortality. Neuromuscular electrical stimulation systems (NMES) for the prevention of VTE may be beneficial for patients in whom pharmacological or standard mechanical prophylaxis methods are contraindicated or are regarded as unsafe or impractical. Although findings of experimental studies suggest that NMES reduce venous stasis, the clinical utility and effectiveness of NMES in VTE prevention remain controversial...
November 21, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/29161368/management-of-cardiac-tamponade-in-catheter-ablation-of-atrial-fibrillation-single-centre-15%C3%A2-year-experience-on-5222-procedures
#14
Rikuta Hamaya, Shinsuke Miyazaki, Hiroshi Taniguchi, Shigeki Kusa, Hiroaki Nakamura, Hitoshi Hachiya, Takatsugu Kajiyama, Tomonori Watanabe, Miyako Igarashi, Kenzo Hirao, Yoshito Iesaka
Aims: Cardiac tamponade during atrial fibrillation (AF) ablation is infrequent but potentially fatal. This study aimed to retrospectively investigate the incidence, management, and outcomes of tamponade in large patient series. Methods and results: The study analysed 5222 AF ablation procedures in 3483 patients between 2002 and 2016 under a heparin-bridge anticoagulation protocol. Cardiac tamponade occurred in 51 procedures/patients, and the incidence was 0...
November 17, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29160765/antithrombotic-treatment-in-peripheral-artery-disease
#15
Dan-Mircea Olinic, Dan Alexandru Tataru, Calin Homorodean, Mihail Spinu, Maria Olinic
This review treats antithrombotic use for peripheral arterial disease (PAD). In asymptomatic patients, there are no scientific data to support single antiplatelet therapy (SAPT) for primary prophylaxis. In symptomatic PAD, SAPT with aspirin or clopidogrel is indicated. The efficacy of aspirin is controversial. Clopidogrel may be preferred over aspirin. Ticagrelor is not superior to clopidogrel in reducing major adverse cardiovascular events and major adverse limb events, but lowers the risk of ischaemic stroke...
November 21, 2017: VASA. Zeitschrift Für Gefässkrankheiten
https://www.readbyqxmd.com/read/29159001/a-unique-case-of-acute-cerebral-venous-sinus-thrombosis-secondary-to-primary-varicella-zoster-virus-infection
#16
Syed F Imam, Omair Ul Haq Lodhi, Zainab Fatima, Saneeya Nasim, Waseem T Malik, Muhammad Sabih Saleem
Primary varicella zoster virus (VZV) infection, predominantly in the pediatric population, presents with pyrexia and a classic pruritic vesicular rash. In adults, although less common, it is more severe and linked to more complications. Neurological complications, which account for less than 1% of all VZV complications, include meningitis, encephalitis, arterial vasculopathy, and venous thrombosis. We present a case of a 39-year-old male who developed extensive cerebral venous sinus thrombosis following primary VZV infection...
September 16, 2017: Curēus
https://www.readbyqxmd.com/read/29158428/borrelia-burgdorferi-glycosaminoglycan-binding-protein-bgp-in-the-b31-strain-is-not-essential-for-infectivity-despite-facilitating-adherence-and-tissue-colonization
#17
Samantha Schlachter, Janakiram Seshu, Tao Lin, Steven Norris, Nikhat Parveen
Lyme disease causing Borrelia burgdorferi is transmitted into the mammalian host by an infected tick bite. Successful infection relies on the ability of this extracellular pathogen to persist and colonize different tissues. B. burgdorferi encodes a large number of adhesins that are able to interact with host ligands to facilitate adherence, and tissue colonization. Multiple glycosaminoglycan binding proteins presence in B. burgdorferi offer a degree of redundancy of function during infection, and highlights the importance for glycosaminoglycans as host cell receptors for spirochete adherence...
November 20, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/29158367/safety-pharmacokinetics-pharmacodynamics-and-antitumor-activity-of-necuparanib-combined-with-nab-paclitaxel-and-gemcitabine-in-patients-with-metastatic-pancreatic-cancer-phase-i-results
#18
Eileen M O'Reilly, James Roach, Paul Miller, Kenneth H Yu, Catherine Tjan, Molly Rosano, Silva Krause, William Avery, Julie Wolf, Keith Flaherty, Darrell Nix, David P Ryan
LESSONS LEARNED: Despite the compelling preclinical rationale of evaluating the genetically engineered heparin derivative, necuparanib, combined with standard therapy in metastatic pancreas adenocarcinoma, the results were ultimately disappointing.Safety was documented, although dose escalation was limited by the number of subcutaneous injections, the potential for skin toxicity (cellulitis), and low-level anticoagulant effect. Nonetheless, the hypothesis of targeting prothrombotic pathways in pancreas adenocarcinoma remains compelling...
November 20, 2017: Oncologist
https://www.readbyqxmd.com/read/29158366/therapeutic-anticoagulation-in-patients-with-primary-brain-tumors-or-secondary-brain-metastasis
#19
REVIEW
Richard J Lin, David L Green, Gunjan L Shah
Patients with primary or metastatic brain tumors are at increased risk of developing venous thromboses. However, the potential benefit of therapeutic anticoagulation in these patients must be weighed against the deadly complication of intracranial hemorrhage. In this review, we summarize available evidence and recent studies of intracranial bleeding risks in primary and metastatic tumors and the impact of therapeutic anticoagulation. We find that for the majority of primary and treated metastatic brain tumors, the risk of spontaneous bleeding is acceptable and not further increased by careful therapeutic anticoagulation with low molecular weight heparin or direct oral anticoagulants, although thrombocytopenia (platelet count less than 50,000/μL) and other coagulopathies are relative contraindications...
November 20, 2017: Oncologist
https://www.readbyqxmd.com/read/29157669/the-combination-of-il-6-and-its-soluble-receptor-is-associated-with-the-response-of-rheumatoid-arthritis-patients-to-tocilizumab
#20
Cesar Diaz-Torne, Maria Dels Angels Ortiz, Patricia Moya, Maria Victoria Hernandez, Delia Reina, Ivan Castellvi, Juan Jose De Agustin, Diana de la Fuente, Hector Corominas, Raimon Sanmarti, Carlos Zamora, Elisabet Cantó, Silvia Vidal
BACKGROUND: IL-6 contributes significantly to the chronic inflammatory process of rheumatoid arthritis (RA). Tocilizumab, a humanized anti-human IL-6 receptor antibody that blocks the signaling originated by the IL-6/IL-6R complex, is an effective treatment. However, predictors of the response to tocilizumab are still required. We aimed to combine IL-6 and soluble IL-6R (sIL-6R) levels to identify groups of responses. METHODS: Heparinized blood and clinical data from 63 RA patients were collected before treatment and after 3 and 6 months...
November 17, 2017: Seminars in Arthritis and Rheumatism
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