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Coagulation monitoring

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https://www.readbyqxmd.com/read/28303661/immunological-and-physiological-observations-in-baboons-with-life-supporting-genetically-engineered-pig-kidney-grafts
#1
Hayato Iwase, Hidetaka Hara, Mohamed Ezzelarab, Tao Li, Zhongqiang Zhang, Bingsi Gao, Hong Liu, Cassandra Long, Yi Wang, Amy Cassano, Edwin Klein, Carol Phelps, David Ayares, Abhinav Humar, Martin Wijkstrom, David K C Cooper
BACKGROUND: Genetically engineered pigs could provide a source of kidneys for clinical transplantation. The two longest kidney graft survivals reported to date have been 136 and 310 days, but graft survival >30 days has been unusual until recently. METHODS: Donor pigs (n=4) were on an α1,3-galactosyltransferase gene-knockout (GTKO)/human complement regulatory protein (CD46) background (GTKO/CD46). In addition, the pigs were transgenic for at least one human coagulation regulatory protein...
March 17, 2017: Xenotransplantation
https://www.readbyqxmd.com/read/28297730/point-of-care-coagulation-monitoring-in-trauma-patients
#2
Philipp Stein, Alexander Kaserer, Gabriela H Spahn, Donat R Spahn
Trauma remains one of the major causes of death and disability all over the world. Uncontrolled blood loss and trauma-induced coagulopathy represent preventable causes of trauma-related morbidity and mortality. Treatment may consist of allogeneic blood product transfusion at a fixed ratio or in an individualized goal-directed way based on point-of-care (POC) and routine laboratory measurements. Viscoelastic POC measurement of the developing clot in whole blood and POC platelet function testing allow rapid and tailored coagulation and transfusion treatment based on goal-directed, factor concentrate-based algorithms...
March 15, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28294526/phase-1-dose-escalating-study-of-the-safety-pharmacokinetics-and-pharmacodynamics-of-activated-factor-x-i-16l
#3
Dana Parsons-Rich, Fei Hua, Gang Li, Constantino Kantaridis, Debra D Pittman, Steven Arkin
BACKGROUND: FXa(I16L) (PF-05230907) is a zymogen-like variant of activated coagulation factor X (FXa). It exhibits enhanced resistance to inactivation by endogenous inhibitors compared with wild-type FXa and restores hemostatic activity in nonclinical models of various bleeding conditions. OBJECTIVES: To evaluate the safety, pharmacokinetics (PK) and pharmacodynamics (PD) of FXa(I16L) , a phase 1, first-in-human, dose escalation clinical trial in healthy adult volunteers was conducted METHODS: Participants were assigned to 1 of 6 ascending single-dose cohorts (0...
March 14, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28275614/considerations-for-analgosedation-and-antithrombotic-management-during-extracorporeal-life-support
#4
REVIEW
Pamela K Burcham, Alan J Rozycki, Erik E Abel
Despite the immense growth in extracorporeal life support (ECLS) technology and experience, opportunity remains to better characterize the pharmacotherapeutic considerations during ECLS. Analgosedation can be particularly challenging in the ECLS population due to in drug-circuit interactions that may lead to decreased systemic concentrations and pharmacodynamic effect. ECLS also requires the use of antithrombotic agents to mitigate the prothrombotic state created by the artificial surface in the ECLS circuit...
February 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28274032/disseminated-intravascular-coagulation-and-excessive-fibrinolysis-dic-xfl-syndrome-in-prostate-cancer-a-rare-complicated-disorder
#5
Azhar Bin Amir Hamzah, Yew Maw Choo, Mohamed Azmi Hassali, Fahad Saleem, Ashutosh Kumar Verma
Disseminated Intravascular Coagulation (DIC) develops in patient with prostate cancer, which is manifested by systemic, intracranial, intracavitary or intracutaneous bleeding indicating uncompensated or excessive fibrinolysis (XFL). This case report is a description of a 61-year-old male with metastatic prostate cancer that progressed to manifest DIC. The condition is rare in clinical practice, and even rarer when is coupled with XFL. Treatment was mainly replenishing coagulation factors, platelets and controlling the disease progression with aggressive hormonal therapy...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28268334/a-pmma-microfluidic-dielectric-sensor-for-blood-coagulation-monitoring-at-the-point-of-care
#6
Debnath Maji, Michael A Suster, Erdem Kucukal, Umut A Gurkan, Evi X Stavrou, Pedram Mohseni
This paper describes the design and construct of a fully biocompatible, microfluidic, dielectric sensor targeted at monitoring human whole blood coagulation at the point-of-care (POC). The sensor assembly procedure involves using sputtered electrodes in a microfluidic channel with a physiologically relevant height of 50μm to create a three-dimensional (3D), parallel-plate, capacitive sensing area. The sensor is constructed with biocompatible materials of polymethyl methacrylate (PMMA) for the substrate and titanium nitride (TiN) for the sensing and floating electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28254045/polytitanium-sulfate-pts-coagulation-application-and-ti-species-detection
#7
Yanxia Zhao, Sherub Phuntsho, Baoyu Gao, Hokyong Shon
Interest in the development of inorganic polymerized coagulants is growing; however, there are only limited studies on the synthesis of polytitanium coagulants, which are expected to exhibit improved coagulation efficiency with better floc properties. This study presents the synthesis of polytitanium sulfate (PTS) for potential application in water purification, followed by characterization of PTS flocs and titanium species detection. Stable PTS solutions were successfully synthesized and standard jar tests were conducted to evaluate their coagulation efficiency...
February 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28249210/elimination-of-microcystin-lr-and-residual-mn-species-using-permanganate-and-powdered-activated-carbon-oxidation-products-and-pathways
#8
Boyoung Jeong, Min-Seok Oh, Hyun-Mee Park, Chanhyuk Park, Eun-Ju Kim, Seok Won Hong
The oxidation of microcystin-LR (MC-LR) in deionized water (DI) and river water using potassium permanganate (KMnO4) at a neutral pH and at 23 ± 2 °C was investigated. These two aqueous systems (i.e., DI and river water) gave comparable second-order rate constants (289.9 and 285.5 M(-1)s(-1) (r(2) > 0.99), respectively), which confirmed the effectiveness of this oxidation process for the treatment of natural surface water. The presence of either humic or fulvic acid reduced the removal efficiency of MC-LR, with the latter exhibiting a greater inhibitory effect...
February 20, 2017: Water Research
https://www.readbyqxmd.com/read/28245861/liver-radiofrequency-ablation-as-emergency-treatment-for-a-ruptured-hepatocellular-carcinoma-a-case-report
#9
Alessandra Bertacco, Francesco D'Amico, Maurizio Romano, Michele Finotti, Alessandro Vitale, Umberto Cillo
BACKGROUND: Hemoperitoneum is a possible complication of hepatocellular carcinoma that may require emergency surgery as an alternative to radiological locoregional therapies. CASE PRESENTATION: We present a case report of a 78-year-old white man with alcoholic-related cirrhosis and a multifocal hepatocellular carcinoma. An abdominal computed tomography scan showed multiple and bilateral foci of bleeding from broken liver cancer. He was urgently transferred from our radiology unit to our operating room for massive hemoperitoneum...
March 1, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28240645/point-of-care-monitoring-for-the-management-of-trauma-induced-bleeding
#10
Alexander A Hanke, Hauke Horstmann, Michaela Wilhelmi
PURPOSE OF REVIEW: Knowledge of trauma-induced coagulopathy has been grown in the past and point-of-care suitable devices for coagulation testing have been introduced. Methodology and clinical application of different systems for point-of-care coagulation monitoring are shown with a focus on thrombelastography as measured by TEG, rotational thromboelastometry as measured by ROTEM and impedance aggregometry as measured by the multiplate analyser and ROTEM platelet. RECENT FINDINGS: Two different methods for point-of-care coagulation assessment are available: viscoelastic tests (ROTEM, TEG) and impedance aggregometry...
April 2017: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/28238752/gold-nanoparticle-interactions-in-human-blood-a-model-evaluation
#11
Niloofar Ajdari, Cian Vyas, Stephanie L Bogan, Bashir A Lwaleed, Brian G Cousins
In this study, we investigated gold nanoparticle (AuNP) interactions in blood using thromboelastography as a rapid screening tool to monitor their influence on blood coagulation. 1.2nM colloidal AuNPs ranging from 12 to 85nm have no effect in the blood, however, 5nM AuNPs demonstrate pro-thrombogenic concentration dependent effects with a reduction in clot formation. Size effects exhibit a non-linear trend with 45 and 85nm particles resulting in a faster pro-thrombotic response. Clot strength decreased with AuNP size with the greatest reduction with 28nm particles...
February 23, 2017: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/28235532/massive-blood-loss-in-elective-spinal-and-orthopedic-surgery-retrospective-review-of-intraoperative-transfusion-strategy
#12
Demicha Rankin, Alix Zuleta-Alarcon, Suren Soghomonyan, Mahmoud Abdel-Rasoul, Karina Castellon-Larios, Sergio D Bergese
OBJECTIVE: To evaluate the perioperative dynamics of hematologic changes and transfusion ratio in patients undergoing a major spinal surgery accompanied with massive bleeding defined as blood loss >5 liters. DESIGN: Retrospective cohort study. SETTING: Operating room of a university-affiliated hospital. PATIENTS: Adult patients who underwent elective neurosurgical, orthopedic, or combined spinal surgical procedure between 2008 and 2012...
February 2017: Journal of Clinical Anesthesia
https://www.readbyqxmd.com/read/28226495/a-pmma-microfluidic-dielectric-sensor-for-blood-coagulation-monitoring-at-the-point-of-care
#13
Debnath Maji, Michael A Suster, Erdem Kucukal, Umut A Gurkan, Evi X Stavrou, Pedram Mohseni, Debnath Maji, Michael A Suster, Erdem Kucukal, Umut A Gurkan, Evi X Stavrou, Pedram Mohseni, Umut A Gurkan, Pedram Mohseni, Debnath Maji, Erdem Kucukal, Evi X Stavrou, Michael A Suster
This paper describes the design and construct of a fully biocompatible, microfluidic, dielectric sensor targeted at monitoring human whole blood coagulation at the point-of-care (POC). The sensor assembly procedure involves using sputtered electrodes in a microfluidic channel with a physiologically relevant height of 50μm to create a three-dimensional (3D), parallel-plate, capacitive sensing area. The sensor is constructed with biocompatible materials of polymethyl methacrylate (PMMA) for the substrate and titanium nitride (TiN) for the sensing and floating electrodes...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226248/the-impact-of-pre-oxidation-with-potassium-permanganate-on-cyanobacterial-organic-matter-removal-by-coagulation
#14
Jana Naceradska, Martin Pivokonsky, Lenka Pivokonska, Magdalena Baresova, Rita K Henderson, Arash Zamyadi, Vaclav Janda
The study investigates the effect of permanganate pre-oxidation on the coagulation of peptides/proteins of Microcystis aeruginosa which comprise a major proportion of the organic matter during cyanobacterial bloom decay. Four different permanganate dosages (0.1, 0.2, 0.4 and 0.6 mg KMnO4 mg(-1) DOC) were applied prior to coagulation by ferric sulphate. Moreover, changes in sample characteristics, such as UV254, DOC content and molecular weight distribution, after pre-oxidation were monitored. The results showed that permanganate pre-oxidation led to a reduction in coagulant dose, increased organic matter removals by coagulation (by 5-12% depending on permanganate dose), microcystin removal (with reductions of 91-96%) and a shift of the optimum pH range from 4...
February 14, 2017: Water Research
https://www.readbyqxmd.com/read/28215898/influence-of-lactobacillus-plantarum-on-yogurt-fermentation-properties-and-subsequent-changes-during-postfermentation-storage
#15
Changkun Li, Jihong Song, Lai-Yu Kwok, Jicheng Wang, Yan Dong, Haijing Yu, Qiangchuan Hou, Heping Zhang, Yongfu Chen
This study aimed to evaluate the influence of 9 Lactobacillus plantarum with broad-spectrum antibacterial activity on fermented milk, including changes to the fermentation characteristics (pH, titration acidity, and viable counts), texture profile, relative content of volatile compounds, and sensory evaluation during 28-d storage at 4°C. First, L. plantarum IMAU80106, IMAU10216, and IMAU70095 were selected as candidates for further study because of their excellent coagulation and proteolytic activities. Subsequently, these L...
February 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28213743/development-of-cer-001-preclinical-dose-selection-through-to-phase-i-clinical-findings
#16
Constance H Keyserling, Ronald Barbaras, Renee Benghozi, Jean-Louis Dasseux
BACKGROUND: CER-001 comprises recombinant human apolipoprotein A-I complexed with phospholipids that mimics natural, nascent, pre-β high-density lipoprotein (HDL). We present animal model data showing dose-dependent increases in cholesterol efflux with CER-001 and its subsequent elimination by reverse lipid transport, together with inhibition of atherosclerotic plaque progression. We report the first phase I study results with CER-001 in humans, starting at 0.25 mg/kg, which is 1/80th of the safe dose (20 mg/kg) established in 4-week multiple-dose animal studies dosed every second day...
February 17, 2017: Clinical Drug Investigation
https://www.readbyqxmd.com/read/28210454/managing-patients-taking-edoxaban-in-dentistry
#17
REVIEW
Adrian Curto, Daniel Curto, Jorge Sanchez
BACKGROUND: Anticoagulation therapy is used in several conditions to prevent or treat thromboembolism. A new group of oral anticoagulants with clear advantages over classic dicoumarin oral anticoagulants (warfarin and acenocoumarol) has been developed in recent years. The Food and Drug Administration has approved edoxaban, dabigatran, rivaroxaban and apixaban. Their advantages include: predictable pharmacokinetics, drug interactions and limited food, rapid onset of action and short half-life...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28210451/dental-management-of-patients-taking-novel-oral-anticoagulants-noas-dabigatran
#18
REVIEW
Adrian Curto, Alberto Albaladejo, Alfonso Alvarado
BACKGROUND: A new group of oral anticoagulants (dabigatran, rivaroxaban, apixaban and edoxaban) with clear advantages over classic dicoumarin oral anticoagulants (warfarin and acenocoumarol) has been developed in recent years. Patients being treated with oral anticoagulants are at higher risk for bleeding when undergoing dental treatments. MATERIAL AND METHODS: A literature search was conducted through April 2016 for publications in the ISI Web of Knowledge, PubMed and Cochrane Library using the keywords "dabigatran", "rivaroxaban", "apixaban", "edoxaban", "new oral anticoagulants", "novel oral anticoagulants", "bleeding" and "dental treatment"...
February 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28209220/very-low-density-lipoprotein-associated-apolipoproteins-predict-cardiovascular-events-and-are-lowered-by-inhibition%C3%A2-of%C3%A2-apoc-iii
#19
Raimund Pechlaner, Sotirios Tsimikas, Xiaoke Yin, Peter Willeit, Ferheen Baig, Peter Santer, Friedrich Oberhollenzer, Georg Egger, Joseph L Witztum, Veronica J Alexander, Johann Willeit, Stefan Kiechl, Manuel Mayr
BACKGROUND: Routine apolipoprotein (apo) measurements for cardiovascular disease (CVD) are restricted to apoA-I and apoB. Here, the authors measured an unprecedented range of apolipoproteins in a prospective, population-based study and relate their plasma levels to risk of CVD. OBJECTIVES: This study sought to measure apolipoproteins directly by mass spectrometry and compare their associations with incident CVD and to obtain a system-level understanding of the correlations of apolipoproteins with the plasma lipidome and proteome...
February 21, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28207542/rifampicin-induced-disseminated-intravascular-coagulation-in-pulmonary-tuberculosis-treatment-a-case-report-and-literature-review
#20
Guo Chen, Jian-Qing He
RATIONALE: Disseminated intravascular coagulation (DIC) induced by daily rifampicin therapy is rare, especially the patient is absent of malignancy, severe infection, and prior exposure to rifampicin. PATIENT CONCERNS: We report a case of DIC induced by daily rifampicin treatment for pulmonary tuberculosis. A 22-year-old, previously healthy man received an anti-tuberculosis therapy consisting of isoniazid, rifampicin, ethambutol, and pyrazinamide on the daily dose recommended by the World Health Organization tuberculosis guidelines after a diagnosis of pulmonary tuberculosis...
February 2017: Medicine (Baltimore)
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