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Clotting factors

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https://www.readbyqxmd.com/read/29775720/diagnosing-human-blood-clotting-deficiency
#1
REVIEW
Chong Cheen Ong, Subash C B Gopinath, Leong Wei Xian Rebecca, Veeradasan Perumal, Thangavel Lakshmipriya, Mohamed Shuaib Mohamed Saheed
There are different clotting factors present in blood, carries the clotting cascade and excessive bleeding may cause a deficiency in the clotting. Diagnosis of deficiency in clotting reduces the potential fatality. For enabling a sensor to detect the clotting factors, suitable probes such as antibody and aptamer have been used to capture the clotting factors on the sensing surface. Two major clotting factors were widely studied in detail for the diagnosis of clotting deficiency, which includes factor IX and thrombin...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29772345/autologous-liquid-platelet-rich-fibrin-a-novel-drug-delivery-system
#2
REVIEW
Richard J Miron, Yufeng Zhang
There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. Substantial work to date has focused on the potential role of these biomolecules during the healing process, and the carrier system utilized is a key factor in their effectiveness. Platelet rich fibrin (PRF) is a naturally derived fibrin scaffold that is easily obtained from peripheral blood following centrifugation. Slower centrifugation speeds have led to the commercialization of a liquid formulation (liquid-PRF) resulting in an upper plasma layer composed of liquid fibrinogen/thrombin prior to clot formation that remains in its liquid phase for approximately 15 minutes until injected into bodily tissues...
May 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29768734/in-vitro-efficacy-of-pro-and-anticoagulant-strategies-in-compensated-and-acutely-ill-patients-with-cirrhosis
#3
Ton Lisman, Simone Kleiss, Vishal C Patel, Caleb Fisher, Jelle Adelmeijer, Sarah Bos, Arjuna Singanayagam, Sidsel Hyldgaard Stoy, Debbie L Shawcross, William Bernal
BACKGROUND & AIMS: A simultaneous decline in pro- and anticoagulant drivers in patients with liver diseases results in a 'rebalanced' hemostatic system, even in acutely ill patients. Nevertheless, both bleeding and thrombotic events are common. Here, we explored efficacy of pro- and antihemostatic strategies in compensated and acutely ill cirrhotics which may be unpredictable given the profound hemostatic changes. METHODS: We tested the effects in vitro of the addition of clinically relevant doses of commonly used pro- and antihemostatic strategies in plasma from healthy individuals (n=30) and patients with compensated (n=18) and acutely decompensated cirrhosis (n=18), and acute-on-chronic liver failure (n=10)...
May 16, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29767244/propranolol-induces-hemangioma-endothelial-cell-apoptosis-via-a-p53%C3%A2-bax-mediated-pathway
#4
Tian-Hua Yao, Parekejiang Pataer, Krishna Prasad Regmi, Xi-Wen Gu, Quan-Yan Li, Jing-Ting Du, Su-Meng Ge, Jun-Bo Tu
The use of propranolol for the treatment of infantile hemangioma (IH) has been widely investigated in recent years. However, the underlying therapeutic mechanism of propranolol for the treatment of IH remains poorly understood. The aim of the present study was to investigate the expression of proteins regulated by cellular tumor antigen p53 (p53) in associated apoptosis pathways in IH endothelial cells (HemECs) treated with propranolol. Furthermore, the present study aimed to investigate the exact apoptotic pathway underlying the therapeutic effect of propranolol against IH...
May 14, 2018: Molecular Medicine Reports
https://www.readbyqxmd.com/read/29764497/activated-prothrombin-complex-concentrate-to-reverse-the-factor-xa-inhibitor-apixaban-effect-before-emergency-surgery-a-case-series
#5
Nina Haagenrud Schultz, Runar Lundblad, Pål Andre Holme
BACKGROUND: The lack of an antidote against factor Xa inhibitors in case of major bleeding or need for urgent surgery is a concern to clinicians. Guidelines on managing major bleeding in patients under anticoagulation with a factor Xa inhibitor suggest several hemostatic agents to reverse the effect, but there is no consensus regarding the choice of drug or appropriate dose. The ability of prothrombin complex concentrate, activated prothrombin complex concentrate, and recombinant factor VIIa to reverse the effect of factor Xa inhibitors has been evaluated in animal studies, in vitro studies, and healthy volunteers, but not yet in randomized clinical studies...
May 16, 2018: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29763772/graphene-kaolin-composite-sponge-for-rapid-and-riskless-hemostasis
#6
Yuping Liang, Congcong Xu, Guofeng Li, Tianchi Liu, Jun F Liang, Xing Wang
Kaolin is an effective and safe hemostatic agent for hemostasis. However, its ontic powder is difficult to use in actual practice. To develop a wieldy and powerful hemostat, composite strategy is usually a good choice. Herein, we developed a graphene-kaolin composite sponge (GKCS), synthesized with graphene oxide sheets, linker molecules and kaolin powders through a facile hydrothermal reaction. SEM observations support that GKCS has a porous structure, and EDS mapping further confirms that kaolin powders are embedded in graphene sheets...
May 8, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/29760205/abnormal-plasma-clot-formation-and-fibrinolysis-reveal-bleeding-tendency-in-patients-with-partial-factor-xi-deficiency
#7
Gillian N Gidley, Lori A Holle, John Burthem, Paula H B Bolton-Maggs, Feng-Chang Lin, Alisa S Wolberg
Individuals with factor XI (FXI) deficiency have a variable bleeding risk that cannot be predicted from plasma FXI antigen or activity. This limitation can result in under- or overtreatment of patients and risk of bleeding or thrombosis. Previously, plasma clot fibrinolysis assays showed sensitivity to bleeding tendency in a small cohort of patients with severe FXI deficiency. Here, we determined the ability of plasma clot formation, structure, and fibrinolysis assays to predict bleeding tendency in a larger, independent cohort of patients with severe and partial FXI deficiency...
May 22, 2018: Blood Advances
https://www.readbyqxmd.com/read/29758126/abrogating-fibrinolysis-does-not-improve-bleeding-or-rfviia-rfviii-treatment-in-a-non-mucosal-venous-injury-model-in-haemophilic-rodents
#8
Rikke Stagaard, Matthew J Flick, Barbara Bojko, Krzysztof Goryński, Paulina Z Goryńska, Carsten D Ley, Lisbeth H Olsen, Tom Knudsen
BACKGROUND: Fibrinolysis may exacerbate bleeding in haemophilia A (HA). Accordingly, antifibrinolytics have been used to help maintain haemostatic control. While antifibrinolytic drugs have been proven effective in the treatment of mucosal bleeds in the oral cavity, their efficacy in non-mucosal tissues remain an open question of significant clinical interest. OBJECTIVE: To determine whether inhibiting fibrinolysis improves the outcome in non-mucosal haemophilic tail vein transection (TVT) bleeding models, and to determine whether a standard ex vivo clotting/fibrinolysis assay can be used as a predictive surrogate for in vivo efficacy...
May 14, 2018: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29756268/does-rotational-thromboelastometry-accurately-predict-coagulation-status-in-patients-with-lupus-anticoagulant
#9
L Hensch, V Kostousov, K Bruzdoski, M Losos, M Pereira, M de Guzman, S Hui, J Teruya
INTRODUCTION: Rotational thromboelastometry (ROTEM) is increasingly used as a tool for monitoring coagulation status. However, ROTEM is susceptible to misinterpretation due to particular coagulation abnormalities. Here, we report the effects of lupus anticoagulant (LA) on ROTEM. METHODS: A prospective observational analysis was performed on 16 children with prior studies indicating the presence of LA or antiphospholipid antibodies. ROTEM analysis was performed, and samples were further analyzed by adding phospholipids (PL) to repeat ROTEM analysis if clotting time (CT) abnormalities were discovered with comparison to ROTEM using an equal volume of isotonic saline...
May 13, 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29755531/adjunctive-platelet-rich-plasma-prp-in-infrabony-regenerative-treatment-a-systematic-review-and-rct-s-meta-analysis
#10
REVIEW
Mubashir Saleem, Flavio Pisani, Faisal Maqbool Zahid, Ioannis Georgakopoulos, Teuta Pustina-Krasniqi, Edit Xhajanka, Maher Almasri
Background and Objective: The purpose of this study was to highlight the clinical performance of platelet-rich plasma (PRP) used as an adjunctive tool for regeneration in infrabony periodontal defects using different biomaterials or performing different surgical flap approaches. Comparative evaluation of main clinical outcomes as probing pocket depth reduction, clinical attachment gain, and recession reduction with and without the use of PRP has been analysed. Materials and Methods: According to the focused question, an electronic and hand searching has been performed up to December 2016...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29749244/influence-of-perioperative-hypothermia-on-blood-clotting-in-children
#11
A Trckova, P Stourac
OBJECTIVES: The decrease of body temperature is one of the causes of blood clotting disorders. BACKGROUND: Accidental hypothermia during anesthesia is a common condition and children, especially newborns, are the most sensitive patients to the side effects of hypothermia. METHODS: Web of Science, SCOPUS and PubMed search was performed to retrieve both original and review articles addressing both, hypothermia during surgery and coagulation disorder in pediatric patients...
2018: Bratislavské Lekárske Listy
https://www.readbyqxmd.com/read/29747815/gangliosides-in-diabetic-wound-healing
#12
Duncan Hieu M Dam, Amy S Paller
An organized series of complicated biological and molecular phenomena is required for normal skin wound healing. These processes depend on normal cellular responses to cytokines, growth factors, and other mediators, such as clotting factors, prostaglandins, free radicals, and nitric oxide. In diabetic ulcers, impaired responses to these molecules lead to abnormalities in vascularization, innervation, matrix reconstruction, and reepithelialization of wounds. keratinocyte migration and proliferation on an extracellular matrix is critical in reepithelialization, but the response to growth factors is blunted in diabetes, including the insulin/IGF-1signaling axis...
2018: Progress in Molecular Biology and Translational Science
https://www.readbyqxmd.com/read/29747114/effect-of-double-filtration-plasmapheresis-for-antibody-mediated-rejection-on-hemostasis-parameters-and-thrombin-generation
#13
R Marlu, P Malvezzi, L Seyve, T Jouve, J Maurizi, F Defendi, P L Carron, M Christophe, A Le Gouellec, B Polack, L Rostaing
INTRODUCTION: Donor-specific alloantibodies (DSAs) cause kidney-allograft loss in chronic antibody-mediated rejection (CAMR). Treatment relies on blocking antibody-producing cells and removing DSAs by apheresis: e.g., double-filtration plasmapheresis (DFPP). MATERIALS AND METHODS: To determine the impact of DFPP (6 or 8 sessions/patient) on clotting factors and natural anticoagulants, and on thrombin generation, we performed a prospective and observational study in five CAMR kidney-transplant patients who received DFPP plus rituximab therapy...
April 20, 2018: Thrombosis Research
https://www.readbyqxmd.com/read/29742264/chlorhexidine-for-prevention-of-alveolar-osteitis-a-randomised-clinical-trial
#14
Diego Halabi, Jose Escobar, Cyntia Alvarado, Nicolette Martinez, Carlos Muñoz
Objective To determine the effectiveness of chlorhexidine 0.12% mouthwash (CHX) after tooth extraction for the prevention of alveolar osteitis (AO). Material and methods We conducted a double-blind randomised clinical trial stratified by risk factors. We enrolled a cohort of 822 patients who underwent dental extractions, and were considered to be at risk of developing AO (previous surgical site infection, traumatic extraction, and tobacco smoking). After extraction, patients were randomly allocated for CHX group or placebo group, matched by risk factors...
2018: Journal of Applied Oral Science: Revista FOB
https://www.readbyqxmd.com/read/29741261/new-challenges-and-best-practices-for-the-laboratory-monitoring-of-factor-viii-and-factor-ix-replacement
#15
REVIEW
D Van den Bossche, K Peerlinck, M Jacquemin
Several recombinant factor VIII and factor IX concentrates with extended half-life (EHL) have recently been validated by clinical studies. The availability of these novel concentrates is expected to significantly facilitate the treatment of patients with hemophilia A and B. However, the modification applied to these molecules has introduced variations in their activity measurement in routine coagulation assays. Depending on the assays, underestimations of up to 10-fold or overestimations of up to approximately 30-fold in the measurements of the recovery have been reported in some factor concentrates...
May 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29741245/pathogenesis-and-diagnosis-of-disseminated-intravascular-coagulation
#16
REVIEW
M Levi
Several clinical conditions, in particular those associated with a systemic inflammatory response, can cause some degree of activation of coagulation but when the procoagulant stimulus is sufficiently severe and overcomes the natural anticoagulant mechanisms of coagulation, disseminated intravascular coagulation (DIC) may occur. The clinical manifestations of DIC encompass multiorgan dysfunction caused by fibrin-platelet clots in the microcirculation, and bleeding caused by consumption of platelets and coagulation factors...
May 2018: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/29739232/comparison-of-the-coagulation-effect-achieved-by-octaplaslg-versus-fresh-frozen-plasma-in-pediatric-cardiac-surgical-patients
#17
Amanpreet S Kalsi, Omar Al-Azzawi, Ravi Gill
OctaplasLG is indicated for use in patients undergoing cardiac surgery who require replacement of multiple clotting factors. The use of OctaplasLG over single-donor fresh frozen plasma (FFP) may have beneficial effects when considering the transmission of enveloped viruses. Additionally, it has the potential for fewer adverse reactions, reduced disease transmission, and a more homogenous coagulation factor composition. However, its efficacy and safety have not yet been evaluated in the pediatric population...
January 1, 2018: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/29738861/oxidation-induced-modifications-of-the-catalytic-subunits-of-plasma-fibrin-stabilizing-factor-at-the-different-stages-of-its-activation-identified-by-mass-spectrometry
#18
Alexandra Vasilyeva, Lyubov' Yurina, Maria Indeykina, Anna Bychkova, Anna Bugrova, Marina Biryukova, Alexey Kononikhin, Evgene Nikolaev, Mark Rosenfeld
Plasma fibrin-stabilizing factor (pFXIII) is a heterotetrameric proenzyme composed of two catalytic A subunits (FXIII-A2 ) and two inhibitory/carrier B subunits (FXIII-B2 ). The main function of the protein is the formation of cross-links between the polypeptide chains of the fibrin clot. The conversion of pFXIII into the enzymatic form FXIII-A2 * is a multistage process. Like many other blood plasma proteins, pFXIII is an oxidant-susceptible target. The influence of distinct sites susceptible to oxidation-mediated modifications on the changes in the structural-functional characteristics of the protein remains fully unexplored...
May 5, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29737222/brain-endothelial-cell-junctions-after-cerebral-hemorrhage-changes-mechanisms-and-therapeutic-targets
#19
Richard F Keep, Anuska V Andjelkovic, Jianming Xiang, Svetlana M Stamatovic, David A Antonetti, Ya Hua, Guohua Xi
Vascular disruption is the underlying cause of cerebral hemorrhage, including intracerebral, subarachnoid and intraventricular hemorrhage. The disease etiology also involves cerebral hemorrhage-induced blood-brain barrier (BBB) disruption, which contributes an important component to brain injury after the initial cerebral hemorrhage. BBB loss drives vasogenic edema, allows leukocyte extravasation and may lead to the entry of potentially neurotoxic and vasoactive compounds into brain. This review summarizes current information on changes in brain endothelial junction proteins in response to cerebral hemorrhage (and clot-related factors), the mechanisms underlying junction modification and potential therapeutic targets to limit BBB disruption and, potentially, hemorrhage occurrence...
January 1, 2018: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/29736870/can-we-predict-thrombotic-tendency-in-rheumatoid-arthritis-a-thromboelastographic-analysis-with-rotem
#20
Sümeyye Merve Türk, Döndü Üsküdar Cansu, Hava Üsküdar Teke, Timuçin Kaşifoğlu, O Meltem Akay, Muzaffer Bilgin, Cengiz Korkmaz
The higher incidence of arterial and venous events is well established in patients with rheumatoid arthritis (RA). Our aim here was to investigate whether there is a prothrombotic state in RA patients by using rotational thromboelastometry (ROTEM) method and to demonstrate whether the disease variables play a role in this process. A total of 85 patients who met the 2010 RA classification criteria were consecutively included in the study. The patients with RA who have been using antiaggregant, anticoagulant, or nonsteroidal anti-inflammatory drugs (NSAIDs) and had a history of arterial or venous thromboembolism were excluded from the study...
May 7, 2018: Clinical Rheumatology
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