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https://www.readbyqxmd.com/read/28645129/clinical-scoring-systems-in-thrombosis-and-hemostasis
#1
Adam Cuker
No abstract text is available yet for this article.
July 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28641133/abc-transporters-in-megakaryopoiesis-and-platelet-activity
#2
REVIEW
Wei Wang, Lorena Buitrago, Ying Wang
ATP-binding cassette (ABC) is a family of transporters that facilitates the translocation of substrates across cell membrane using its ATPase subunit. These transporters have key roles in multidrug resistance, lipid homeostasis, antigen processing, immunity, cell proliferation and hematopoiesis. Some ABC transporters are selectively expressed on megakaryocyte progenitor, megakaryocyte and its cellular fragment platelet. However, the role of ABC transporters in hemostasis and thrombosis were not well explored until recently...
June 14, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28628558/genetics-of-pleiotropic-effects-of-dexamethasone
#3
Laura B Ramsey, Stan Pounds, Cheng Cheng, Xueyuan Cao, Wenjian Yang, Colton Smith, Seth E Karol, Chengcheng Liu, John C Panetta, Hiroto Inaba, Jeffrey E Rubnitz, Monika L Metzger, Raul C Ribeiro, John T Sandlund, Sima Jeha, Ching-Hon Pui, William E Evans, Mary V Relling
OBJECTIVES: Glucocorticoids such as dexamethasone have pleiotropic effects, including desired antileukemic, anti-inflammatory, or immunosuppressive effects, and undesired metabolic or toxic effects. The most serious adverse effects of dexamethasone among patients with acute lymphoblastic leukemia are osteonecrosis and thrombosis. To identify inherited genomic variation involved in these severe adverse effects, we carried out genome-wide association studies (GWAS) by analyzing 14 pleiotropic glucocorticoid phenotypes in 391 patients with acute lymphoblastic leukemia...
June 16, 2017: Pharmacogenetics and Genomics
https://www.readbyqxmd.com/read/28623399/endothelial-dysfunction-in-rectal-cancer-patients-chronically-exposed-to-ionizing-radiation
#4
Tolebay Rakhypbekov, Ken Inoue, Laura Pak, Noriyuki Kawano, Nobuo Takeichi, Masaharu Hoshi, Yoshihiro Noso, Nailya Chaizhunusova, Zukhra Manambayeva, Arman Khozhayev, Maulen Molgazhdarov, Sayakhat Olzhaev, Sholpan Tokanova, Madina Madiyeva
We sought to identify the features of endothelial function in rectal cancer patients who were exposed to chronic ionizing radiation from a nuclear test site in Kazakhstan. We examined 146 individuals, 76 of whom were rectal cancer patients. The existence of a complex of disturbances of the endothelium and hemostasis systems in patients vs non-patients was revealed. Endothelial dysfunction was expressed as an increase of nitric oxide (NO) production along with decreases in vasodilatation function, and increased levels of von Willebrand factor in blood, along with an increase in the number of circulating endotheliocytes...
June 16, 2017: Radiation and Environmental Biophysics
https://www.readbyqxmd.com/read/28611024/platelet-amyloid-precursor-protein-is-a-modulator-of-venous-thromboembolism-in-mice
#5
Ilaria Canobbio, Caterina Visconte, Stefania Momi, Gianni Francesco Guidetti, Marta Zarà, Jessica Canino, Emanuela Falcinelli, Paolo Gresele, Mauro Torti
The amyloid precursor protein (APP), primarily known as the precursor of amyloid peptides that accumulate in the brain of Alzheimer's disease patients, is abundant in platelets but its physiological function remains unknown. In this study, we investigated the role of APP in hemostasis and thrombosis using APP knockout (KO) mice. Ex vivo aggregation, secretion, and integrin αIIbβ3 inside-out activation induced by several agonists were normal in APP-deficient platelets, but the number of circulating platelets was reduced by about 20%, and their size was slightly increased...
June 13, 2017: Blood
https://www.readbyqxmd.com/read/28603902/extracellular-signal-regulated-kinase-5-associates-with-casein-kinase-ii-to-regulate-gpib-ix-mediated-platelet-activation-via-the-pten-pi3k-akt-pathway
#6
Z Cheng, W Gao, X Fan, X Chen, H Mei, J Liu, X Luo, Y Hu
BACKGROUND: The platelet glycoprotein (GP) Ib-IX complex plays essential roles in thrombosis and hemostasis. The mitogen-activated protein kinases (MAPKs) ERK1/2 and p38 have been shown to be important in the GPIb-IX-mediated signaling leading to integrin activation. However, the roles of the MAPK extracellular signal-regulated kinase 5 (ERK5) in GPIb-IX-mediated platelet activation are unknown. OBJECTIVE: To reveal the function and mechanisms of ERK5 in GPIb-IX-mediated platelet activation...
June 11, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28598281/design-development-and-characterization-of-act017-a-humanized-fab-that-blocks-platelet-s-glycoprotein-vi-function-without-causing-bleeding-risks
#7
Kristell Lebozec, Martine Jandrot-Perrus, Gilles Avenard, Olivier Favre-Bulle, Philippe Billiald
Glycoprotein VI is a platelet-specific collagen receptor critical for in vivo formation of arterial thrombosis. It is also considered as an attractive target for the development of anti-thrombotic drugs because blocking glycoprotein (GP)VI inhibits platelet aggregation without inducing detrimental effects on physiological hemostasis. Here, we present data on the identification, in vitro and ex vivo pharmacology of a humanized Fab fragment designated as ACT017. ACT017 was selected out of 15 humanized variants based upon structural and functional properties...
June 9, 2017: MAbs
https://www.readbyqxmd.com/read/28596657/increased-level-of-factor-viii-and-physiological-inhibitors-of-coagulation-in-patients-with-sickle-cell-disease
#8
Mohamed Chekkal, Mohamed Chakib Arslane Rahal, Khedidja Moulasserdoun, Fatima Seghier
Sickle cell disease (SCD) is a hemoglobinopathy characterized by hemolysis, oxidative stress, and vaso-occlusive crises. Thromboembolism also remains a serious complication and probably underestimated in the SCD. Our objective was to seek the existence of hemostasis abnormalities that predispose to thrombosis such as elevation of FVIII and Physiological inhibitors of coagulation deficiency. We studied 81 patients with SCD, including 32 homozygous S/S, 20 double heterozygous S/β thalassemia and 29 heterozygous S/A...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28592770/dic-an-update-on-diagnosis-and-treatment
#9
Hideo Wada, Kei Hasegawa, Maki Watanabe
Disseminated intravascular coagulation (DIC) was considered to be a fatal disease. However, it has recently been suggested that very early DIC protects the host against microthrombosis and infection localization. Therefore, early treatment of DIC may be contraindicated in patients with sepsis. These factors suggest that the diagnosis and treatment of DIC will gain further importance. The Japanese Clinical Practice Guidelines for Management of Sepsis and Septic Shock 2016 (J-SSCG2016), which include details regarding the management of DIC, have been recently published...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28591212/reduced-adamts13-levels-in-patients-with-acute-and-chronic-cerebrovascular-disease
#10
Frederik Denorme, Peter Kraft, Inge Pareyn, Christiane Drechsler, Hans Deckmyn, Karen Vanhoorelbeke, Christoph Kleinschnitz, Simon F De Meyer
Von Willebrand Factor (VWF) plays a major role in thrombosis and hemostasis and its thrombogenicity is controlled by ADAMTS13. Whereas increasing evidence shows a clear association between VWF levels and acute ischemic stroke, little is known about a correlation with ADAMTS13. Therefore, the aim of this study was to compare plasma levels of ADAMTS13 between 85 healthy volunteers (HV), 104 patients with acute ischemic stroke and 112 patients with a chronic cerebrovascular disease (CCD). In this case-control study, plasma ADAMTS13 antigen levels were measured by ELISA and plasma VWF levels, measured previously, were next used to calculate VWF:ADAMTS13 ratios...
2017: PloS One
https://www.readbyqxmd.com/read/28581694/abnormal-von-willebrand-factor-secretion-factor-viii-stabilization-and-thrombus-dynamics-in-type-2n-von-willebrand-disease-mice
#11
Laura L Swystun, Ilinca Georgescu, Jeff Mewburn, Meghan Deforest, Kate Nesbitt, Kassandra Hebert, Courtney Dwyer, Christine Brown, Colleen Notley, David Lillicrap
BACKGROUND: von Willebrand factor (VWF) and factor VIII (FVIII) circulate as a non-covalent complex with VWF serving as the carrier for FVIII. VWF indirectly influences secondary hemostasis by stabilizing FVIII and transporting it to the site of primary hemostasis. Type 2N von Willebrand disease involves impaired binding of VWF to FVIII, resulting in decreased plasma levels of FVIII. OBJECTIVES: In these studies, we characterize the impact of three type 2N VWD variants (R763A, R854Q, R816W) on VWF secretion, FVIII stabilization, and thrombus formation in a murine model...
June 5, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28580870/application-of-microfluidic-devices-in-studies-of-thrombosis-and-hemostasis
#12
Changjie Zhang, Sriram Neelamegham
Due to the importance of fluid flow during thrombotic episodes, it is quite appropriate to study clotting and bleeding processes in devices that have well-defined fluid shear environments. Two common devices for applying these defined shear stresses include the cone-and-plate viscometer and parallel-plate flow chamber. While such tools have many salient features, they require large amounts of blood or other protein components. With growth in the area of microfluidics over the last two decades, it has become feasible to miniaturize such flow devices...
June 5, 2017: Platelets
https://www.readbyqxmd.com/read/28570273/myeloid-related-protein-14-regulates-deep-vein-thrombosis
#13
Yunmei Wang, Huiyun Gao, Chase W Kessinger, Alvin Schmaier, Farouc A Jaffer, Daniel I Simon
Using transcriptional profiling of platelets from patients presenting with acute myocardial infarction, we identified myeloid-related protein-14 (MRP-14, also known as S100A9) as an acute myocardial infarction gene and reported that platelet MRP-14 binding to platelet CD36 regulates arterial thrombosis. However, whether MRP-14 plays a role in venous thrombosis is unknown. We subjected WT and Mrp-14-deficient (Mrp-14-/-) mice to experimental models of deep vein thrombosis (DVT) by stasis ligation or partial flow restriction (stenosis) of the inferior vena cava...
June 2, 2017: JCI Insight
https://www.readbyqxmd.com/read/28569921/microvesicles-in-vascular-homeostasis-and-diseases-position-paper-of-the-european-society-of-cardiology-esc-working-group-on-atherosclerosis-and-vascular-biology
#14
Victoria C Ridger, Chantal M Boulanger, Anne Angelillo-Scherrer, Lina Badimon, Olivier Blanc-Brude, Marie-Luce Bochaton-Piallat, Eric Boilard, Edit I Buzas, Andreas Caporali, Françoise Dignat-George, Paul C Evans, Romaric Lacroix, Esther Lutgens, Daniel F J Ketelhuth, Rienk Nieuwland, Florence Toti, Jose Tunon, Christian Weber
Microvesicles are members of the family of extracellular vesicles shed from the plasma membrane of activated or apoptotic cells. Microvesicles were initially characterised by their pro-coagulant activity and described as "microparticles". There is mounting evidence revealing a role for microvesicles in intercellular communication, with particular relevance to hemostasis and vascular biology. Coupled with this, the potential of microvesicles as meaningful biomarkers is under intense investigation. This Position Paper will summarise the current knowledge on the mechanisms of formation and composition of microvesicles of endothelial, platelet, red blood cell and leukocyte origin...
June 1, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28566277/enzymatic-lipid-oxidation-by-eosinophils-propagates-coagulation-hemostasis-and-thrombotic-disease
#15
Stefan Uderhardt, Jochen A Ackermann, Tobias Fillep, Victoria J Hammond, Johann Willeit, Peter Santer, Manuel Mayr, Markus Biburger, Meike Miller, Katie R Zellner, Konstantin Stark, Alexander Zarbock, Jan Rossaint, Irene Schubert, Dirk Mielenz, Barbara Dietel, Dorette Raaz-Schrauder, Cihan Ay, Thomas Gremmel, Johannes Thaler, Christian Heim, Martin Herrmann, Peter W Collins, Gernot Schabbauer, Nigel Mackman, David Voehringer, Jerry L Nadler, James J Lee, Steffen Massberg, Manfred Rauh, Stefan Kiechl, Georg Schett, Valerie B O'Donnell, Gerhard Krönke
Blood coagulation is essential for physiological hemostasis but simultaneously contributes to thrombotic disease. However, molecular and cellular events controlling initiation and propagation of coagulation are still incompletely understood. In this study, we demonstrate an unexpected role of eosinophils during plasmatic coagulation, hemostasis, and thrombosis. Using a large-scale epidemiological approach, we identified eosinophil cationic protein as an independent and predictive risk factor for thrombotic events in humans...
May 31, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28565732/-consensus-of-chinese-expert-on-the-diagnosis-and-treatment-of-hemophilia-version-2017
#16
(no author information available yet)
No abstract text is available yet for this article.
May 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28565731/-consensus-of-chinese-experts-on-diagnosis-of-disseminated-intravascular-coagulation-version-2017
#17
(no author information available yet)
No abstract text is available yet for this article.
May 14, 2017: Zhonghua Xue Ye Xue za Zhi, Zhonghua Xueyexue Zazhi
https://www.readbyqxmd.com/read/28561434/intracellular-origin-and-ultrastructure-of-platelet-derived-microparticles
#18
A A Ponomareva, T A Nevzorova, E R Mordakhanova, I A Andrianova, L Rauova, R I Litvinov, J W Weisel
BACKGROUND: Platelet-derived microparticles comprise the major population of circulating blood microparticles that play an important role in hemostasis and thrombosis. Despite numerous studies on the (patho)physiological roles of platelet-derived microparticles, mechanisms of their formation and structural details remain largely unknown. OBJECTIVES: Here we studied the formation, ultrastructure, and composition of platelet-derived microparticles from isolated human platelets, either quiescent or stimulated with one of the following activators: arachidonic acid, ADP, collagen, thrombin, or calcium ionophore A23187...
May 31, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28551057/-postoperative-excessive-blood-loss-after-cardiac-surgery-can-be-predicted-with-international-society-on-thrombosis-and-hemostasis-scoring-system
#19
Yoon Ji Choi, Seung Zhoo Yoon, Beom Joon Joo, Jung Man Lee, Yun-Seok Jeon, Young Jin Lim, Jong Hwan Lee, Hyuk Ahn
BACKGROUND AND OBJECTIVE: Prediction of postoperative excessive blood loss is useful for management of Intensive Care Unit after cardiac surgery. The aim of present study was to examine the effectiveness of International Society on Thrombosis and Hemostasis scoring system in patients with cardiac surgery. METHOD: After obtaining approval from the institutional review board, the medical records of patients undergoing elective cardiac surgery using Cardio-Pulmonary Bypass between March 2010 and February 2014 were retrospectively reviewed...
May 24, 2017: Revista Brasileira de Anestesiologia
https://www.readbyqxmd.com/read/28550640/endogenous-tissue-factor-pathway-inhibitor-in-vascular-smooth-muscle-cells-inhibits-arterial-thrombosis
#20
Jichun Yang, Kaiyue Jin, Jiajun Xiao, Jing Ma, Duan Ma
Tissue factor pathway inhibitor (TFPI) is the main inhibitor of tissue factor-mediated coagulation. TFPI is expressed by endothelial and smooth muscle cells in the vasculature. Endothelium-derived TFPI has been reported to play a regulatory role in arterial thrombosis. However, the role of endogenous TFPI in vascular smooth muscle cells (VSMCs) in thrombosis and vascular disease development has yet to be elucidated. In this TFPI(Flox) mice crossbred with Sma-Cre mice were utilized to establish TFPI conditional knockout mice and to examine the effects of VSMC-directed TFPI deletion on development, hemostasis, and thrombosis...
May 27, 2017: Frontiers of Medicine
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