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Coagulation Factor Concentrates

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https://www.readbyqxmd.com/read/28816555/chemical-utilization-of-albizia-lebbeck-leaves-for-developing-protein-concentrates-as-a-dietary-supplement
#1
Lutful Haque Khan, V K Varshney
In search of nonconventional sources of protein to combat widespread malnutrition, the possibility of developing a protein concentrate as an alternative dietary supplement from abundantly available yet poorly valorized leaves of Albizia lebbeck (siris) was examined. A process for recovery of leaf protein concentrate (LPC) from these leaves was optimized and applied for isolation of LPCs from lower, middle, and upper canopies of the tree. The optimized conditions (leaves to water 1:9, coagulation at pH 4.0 using 1 N citric acid at 90°C for 11 minutes) afforded LPCs containing protein 37...
August 17, 2017: Journal of Dietary Supplements
https://www.readbyqxmd.com/read/28816340/coagulation-factor-xii-regulates-inflammatory-responses-in-human-lungs
#2
Rosanna Hess, Lukasz Wujak, Christina Hesse, Katherina Sewald, Danny Jonigk, Gregor Warnecke, Hans-Gerd Fieguth, Steven de Maat, Coen Maas, Francesco Bonella, Klaus T Preissner, Benjamin Weiss, Liliana Schaefer, Wolfgang M Kuebler, Philipp Markart, Malgorzata Wygrecka
Increased procoagulant activity in the alveolar compartment and uncontrolled inflammation are hallmarks of the acute respiratory distress syndrome (ARDS). Here, we investigated whether the contact phase system of coagulation is activated and may regulate inflammatory responses in human lungs. Components of the contact phase system were characterized in bronchoalveolar lavage fluids (BALF) from 54 ARDS patients and 43 controls, and their impact on cytokine/chemokine expression in human precision cut lung slices (PCLS) was assessed by a PCR array...
August 17, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28810961/resuscitation-of-hypotensive-traumatic-brain-injured-animals-with-spray-dried-plasma-does-not-adversely-alter-physiology-and-improves-blood-brain-barrier-function
#3
Steven McDaniel, Stephanie Golla, Anthony N Moore, Joe DaCorta, Arthur Bode, Shibani Pati, Pramod K Dash, Jing Zhao
INTRODUCTION: According to the Defense and Veterans Brain Injury Center and the Armed Forces Health Surveillance Center, the number of soldiers who have sustained a traumatic brain injury (TBI) has risen dramatically over the past decade. Studies have shown that brain damage can be exacerbated if blood loss occurs (often occurring in polytrauma). As blood supply is critical for brain function and survival, TBI patients must be properly resuscitated to maintain blood volume, blood pressure, and cerebral perfusion...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28804827/assessment-of-hereditary-thrombophilia-performance-of-antithrombin-at-testing
#4
Jana N Gausman, Richard A Marlar
Antithrombin (AT) is a naturally occurring plasma inhibitor of coagulation, which is a synthesized in the liver. AT inhibits coagulation serine proteases (the enzymatically activated forms of the clotting factors), mainly thrombin (factor IIa) and factor Xa, but also to a lesser extent factors IXa, XIa, and XIIa. Acting alone, AT inhibits coagulation factors, but does this very slowly; however, when coupled with heparin as a cofactor, the speed of inhibition is increased many fold. The AT/Heparin complex is the most powerful naturally occurring anticoagulant in blood...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28798139/impact-of-non-vitamin-k-antagonist-oral-anticoagulants-from-a-basic-science-perspective
#5
REVIEW
Maureane Hoffman, Dougald M Monroe
The biochemical properties of the non-vitamin K antagonist oral anticoagulants (NOACs) and their differences from the mechanism of action of vitamin K antagonists contribute to their properties as anticoagulants. These properties include as follows: (1) Inhibiting a single protease is much less effective at inhibiting coagulation than is inhibiting at multiple steps. Thus, the dose-response relationship between NOAC level and intensity of anticoagulation is shallower and more linear than that of vitamin K antagonists...
August 10, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28796276/colistin-dampens-fibrinolysis-and-endothelial-activation-during-endotoxaemia-a-randomised-double-blind-trial
#6
Christian Schoergenhofer, Peter Matzneller, Marion Mußbacher, Johannes A Schmid, Petra Jilma-Stohlawetz, Markus Zeitlinger, Bernd Jilma
Colistin electrostatically interacts with lipopolysaccharides (LPS). Pre-clinical studies demonstrated beneficial effects of colistin on LPS-induced coagulation and fibrinolysis. The objective of this trial was to investigate the effects of colistin during experimental endotoxaemia. In this randomised, double-blind, placebo-controlled, crossover trial 16 healthy volunteers received a 2 ng/kg LPS bolus after infusion of 2.5 million IU colistin or placebo. Plasma levels of F1+2 prothrombin fragments, thrombin-antithrombin complexes (TAT), von Willebrand factor antigen levels (vWF), E-selectin, plasmin-antiplasmin complexes (PAP), tissue-type plasminogen activator (t-PA) antigen and activity, plasminogen activator inhibitor-1 (PAI-1) were measured...
August 10, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28792416/identifying-coagulopathies-in-the-pathophysiology-of-cold-stress-syndrome-in-the-florida-manatee-trichechus-manatus-latirostris
#7
Ashley Barratclough, Bobbi J Conner, Marjory B Brooks, Alyssa Pontes Stablein, Trevor J Gerlach, Roger L Reep, Ray L Ball, Ruth Francis Floyd
Cold stress syndrome (CSS) in the Florida manatee Trichechus manatus latirostris has been defined as morbidity and mortality resulting from prolonged exposure to water temperatures <20°C. The pathophysiology is described as multifactorial, involving nutritional, immunological and metabolic disturbances; however, the exact mechanisms are unknown. We hypothesized that thromboembolic complications contribute to the pathophysiology of CSS in addition to the previously described factors. During the winter of 2014-2015, 10 Florida manatees with clinical signs of CSS were presented to Lowry Park Zoo, Tampa, FL, USA...
August 9, 2017: Diseases of Aquatic Organisms
https://www.readbyqxmd.com/read/28791851/clinical-risk-factors-for-loss-of-stent-primary-patency-in-patients-with-chronic-legs-ischemia
#8
Klaudia Koza, Paweł Grzelązka, Adrianna Trofimiuk, Karol Suppan, Marcin Wasielewski, Joanna Wiśniewska, Jacek Budzyński
BACKGROUND: The outcome of endovascular therapy can be influenced by a number of factors, either demographic, biochemical, angiographic or procedural. Knowledge about these factors may help in the individualization of therapeutic methods, surveillance intensity, and should, ultimately, improve intervention efficacy. OBJECTIVES: The aim of this study was to estimate the effect of clinical and biochemical factors on the late outcome of lower limb artery stenting. MATERIAL AND METHODS: The medical documentation of 91 patients with at least a 1 year follow-up after the stenting of a lower limb artery was retrospectively evaluated...
March 2017: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28780433/effect-of-a-typical-antibiotic-tetracycline-on-the-aggregation-of-tio2-nanoparticles-in-an-aquatic-environment
#9
Ning Qi, Peifang Wang, Chao Wang, Yanhui Ao
The effect of tetracycline (TC) on the behavior of TiO2 nanoparticles (NPs) in solution is investigated. The results illustrate that TC molecules do not exhibit an obvious effect on the aggregation of TiO2 NPs under circumneutral conditions (pH of approximately 5.5). However, the TC molecules exhibit a remarkable effect on the behavior of TiO2 NPs when the environmental factors (such as pH, ionic strength, and humic acid; HA) are adjusted. In the pH range from 3.0 to 10.0, the zeta potentials of NPs become more positively charged after TC adsorption...
July 21, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28766731/microparticles-from-stored-red-blood-cells-enhance-procoagulant-and-proinflammatory-activity
#10
Dania Fischer, Julian Büssow, Patrick Meybohm, Christian Friedrich Weber, Kai Zacharowski, Anja Urbschat, Markus Matthias Müller, Carla Jennewein
BACKGROUND: The pathomechanisms of morbidity due to blood transfusions are not yet entirely understood. Elevated levels of red blood cell-derived microparticles (RMPs) are found in coagulation-related pathologies and also in stored blood. Previous research has shown that RMPs mediate transfusion-related complications by the intrinsic pathway. We hypothesized that RMPs might play a role in post-transfusion thrombotic complications by enhancing procoagulant activity also through the extrinsic pathway of coagulation...
August 2, 2017: Transfusion
https://www.readbyqxmd.com/read/28765353/hemostatic-management-of-trauma-induced-coagulopathy
#11
Janise B Phillips, Phillip L Mohorn, Rebecca E Bookstaver, Tanya O Ezekiel, Christopher M Watson
Trauma-induced coagulopathy is a primary factor in many trauma-related fatalities. Management hinges upon rapid diagnosis of coagulation abnormalities and immediate administration of appropriate hemostatic agents. Use of crystalloids and packed red blood cells has traditionally been the core of trauma resuscitation, but current massive transfusion protocols include combination therapy with fresh frozen plasma and predefined ratios of platelets to packed red blood cells, limiting crystalloid administration. Hemostatic agents such as tranexamic acid, prothrombin complex concentrate, fibrinogen concentrate, and, in cases of refractory bleeding, recombinant activated factor VIIa may also be warranted...
August 2017: Critical Care Nurse
https://www.readbyqxmd.com/read/28763307/comparison-of-3-factor-versus-4-factor-prothrombin-complex-concentrate-with-regard-to-warfarin-reversal-blood-product-use-and-costs
#12
Jessica DeAngelo, Daniel Jarrell, Richard Cosgrove, James Camamo, Christopher Edwards, Asad E Patanwala
BACKGROUND: Prothrombin complex concentrates (PCCs) are drug products containing varying amounts of vitamin K-dependent coagulation factors II, VII, IX, and X. The evidence comparing 3-factor PCC (3-PCC) versus 4-factor PCC (4-PCC) for warfarin reversal is conflicting. It has been hypothesized that 3-PCC may be less effective than 4-PCC because of relatively lower factor VII content. STUDY QUESTION: The primary objective of this study was to compare international normalized ratio (INR) reversal between 3-PCC and 4-factor PCC (4-PCC) in warfarin-treated patients...
July 26, 2017: American Journal of Therapeutics
https://www.readbyqxmd.com/read/28762633/platelet-activation-and-clotting-cascade-activation-by-dialyzers-designed-for-high-volume-online-hemodiafiltration
#13
Kamonwan Tangvoraphonkchai, Anne Riddell, Andrew Davenport
INTRODUCTION: Hemodialysis patients are pro-thrombotic. Higher volume online postdilutional hemodiafiltration (OL-HDF), with increasing hematocrit increases the risk of clotting in the extracorporeal circuit (ECC). We wished to determine whether OL-HDF increased platelet activation and ECC clotting. METHODS: Coagulation parameters, platelet, white cell, and endothelial activation markers were measured at the start and end of dialysis sessions in 10 patients and also pre- and post-dialyzer after 15 minutes using two different dialyzers designed for high volume OL-HDF; cellulose triacetate (TAGP) and polysulphone (PS), and polyvinylpyrrolidone (PVP)...
August 1, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28760218/growth-differentiation-factor-15-and-risk-of-major-bleeding-in-atrial-fibrillation-insights-from-the-randomized-evaluation-of-long-term-anticoagulation-therapy-re-ly-trial
#14
RANDOMIZED CONTROLLED TRIAL
Ziad Hijazi, Jonas Oldgren, Ulrika Andersson, Stuart J Connolly, John W Eikelboom, Michael D Ezekowitz, Paul A Reilly, Salim Yusuf, Agneta Siegbahn, Lars Wallentin
OBJECTIVE: To evaluate and validate the prognostic value of growth-differentiation factor 15 (GDF-15) beyond clinical characteristics and other biomarkers concerning bleeding and stroke outcomes in patients with atrial fibrillation in the RE-LY trial. METHODS: GDF-15 was measured in samples collected at randomization in 8,474 patients with a median follow-up time of 1.9 years. Patients were stratified based on predefined GDF-15 cutoffs: group 1, <1,200 ng/L (the 90th percentile in healthy individuals); group 2, 1,200-1,800; and group 3, >1,800 ng/L (high-risk individuals)...
August 2017: American Heart Journal
https://www.readbyqxmd.com/read/28759765/bioaccumulation-and-toxicity-studies-of-macroalgae-charophyceae-treated-with-aluminium-experimental-studies-in-the-context-of-lake-restoration
#15
Michał Rybak, Agata Kołodziejczyk, Tomasz Joniak, Izabela Ratajczak, Maciej Gąbka
The objective of this study was to examine the impact of aluminium on the perennial macroalgae Chara hispida L. and its bioaccumulation capacities. Aluminium (Al) was introduced into the environment in the form of polyaluminium chloride, an agent utilized in the restoration of waterbodies. Research was conducted in an experimental setting using mesocosms (volume 0.8m(3)) placed in the littoral zone of a lake with C. hispida. Three doses of the coagulant were applied, each with a different volume: low - 6.1g Al m(-3), medium - 12...
July 28, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28756471/the-research-agenda-for-trauma-critical-care
#16
REVIEW
Karim Asehnoune, Zsolt Balogh, Giuseppe Citerio, Andre Cap, Timothy Billiar, Nino Stocchetti, Mitchell J Cohen, Paolo Pelosi, Nicola Curry, Christine Gaarder, Russell Gruen, John Holcomb, Beverley J Hunt, Nicole P Juffermans, Mark Maegele, Mark Midwinter, Frederick A Moore, Michael O'Dwyer, Jean-François Pittet, Herbert Schöchl, Martin Schreiber, Philip C Spinella, Simon Stanworth, Robert Winfield, Karim Brohi
In this research agenda on the acute and critical care management of trauma patients, we concentrate on the major factors leading to death, namely haemorrhage and traumatic brain injury (TBI). In haemostasis biology, the results of randomised controlled trials have led to the therapeutic focus moving away from the augmentation of coagulation factors (such as recombinant factor VIIa) and towards fibrinogen supplementation and administration of antifibrinolytics such as tranexamic acid. Novel diagnostic techniques need to be evaluated to determine whether an individualised precision approach is superior to current empirical practice...
July 29, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28754640/the-pathogenesis-of-chronic-subdural-hematomas-a-study-on-the-formation-of-chronic-subdural-hematomas-and-analysis-of-ct-findings
#17
Neda Jafari, Lyle Gesner, Joseph M Koziol, Giorgio Rotoli, Otakar R Hubschmann
The origin of chronic subdural hematomas (CSDH) and the pathophysiology of its enlargement remain unknown. The chemical fluid composition of CSDH the contribution of CSF to its enlargement and the relationship to its appearance on CT appearance is also not entirely clear. In this prospective study, 58 samples in 41 patients treated surgically for CSDH were analyzed. The CSDH were evaluated for the presence of CSF using beta-2 transferrin (β2T) and substances, related to cell breakdown and hemolysis. These were compared to normal value of those substances in the serum and the CT appearances of the CSDH...
July 25, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28749986/the-role-of-the-tissue-factor-and-its-inhibitor-in-the-development-of-subclinical-atherosclerosis-in-people-living-with-hiv
#18
Katarzyna Barska, Wiesława Kwiatkowska, Brygida Knysz, Katarzyna Arczyńska, Maciej Karczewski, Wojciech Witkiewicz
INTRODUCTION: HIV infection is associated with an increased risk of cardiovascular disease in connection with atherosclerosis and thromboembolic complications. The pathogenesis of atherosclerosis is still unclear in this group of patients. Studies on pathogenesis of atherosclerosis in the general population emphasize the role of the extrinsic pathway of blood coagulation, particularly the tissue factor (TF) and tissue factor pathway inhibitor (TFPI). The effect of persistent activation of the immune system on enhanced expression of TF on the surface of monocytes in subjects infected with HIV is known to be correlated with the level of HIV RNA in blood serum...
2017: PloS One
https://www.readbyqxmd.com/read/28748351/pig-tissue-factor-pathway-inhibitor-%C3%AE-fusion-immunoglobulin-inhibits-pig-tissue-factor-activity-in-human-plasma-moderately-more-efficiently-than-the-human-counterpart
#19
Chang-Yong Choi, Yeon-Hui Kim, Joonbeom Bae, Suk Jun Lee, Hyun Kyung Kim, Chung-Gyu Park, Taehoon Chun
OBJECTIVE: To determine the efficacy of soluble pig tissue factor pathway inhibitor fusion immunoglobulin (TFPI-Ig) in blocking pig to human xenogeneic blood coagulation. RESULTS: To generate pig TFPI-Ig or human TFPI-Ig, expression vector containing cDNA encoding pig TFPIα or human TFPIα combined with human constant Ig heavy chain region was cloned and introduced into CHO cells. After purification of pig TFPI-Ig and human TFPI-Ig, the inhibition of each recombinant protein on pig tissue factor (TF)-mediated blood coagulation was examined in human plasma...
July 26, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/28739377/blood-hemostatic-changes-during-an-ultraendurance-road-cycling-event-in-a-hot-environment
#20
Brian R Kupchak, Josh B Kazman, Jakob L Vingren, Danielle E Levitt, Elaine C Lee, Keith H Williamson, Lawrence E Armstrong, Patricia A Deuster
OBJECTIVE: This study aims to examine blood hemostatic responses to completing a 164-km road cycling event in a hot environment. METHODS: Thirty-seven subjects (28 men and 9 women; 51.8±9.5 [mean±SD] y) completed the ride in 6.6±1.1 hours. Anthropometrics (height, body mass [taken also during morning of the ride], percent body fat [%]) were collected the day before the ride. Blood samples were collected on the morning of the ride (PRE) and immediately after (IP) the subject completed the ride...
July 21, 2017: Wilderness & Environmental Medicine
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