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https://www.readbyqxmd.com/read/28342822/antiplatelet-activity-of-drugs-used-in-hypertension-dislipidemie-and-diabetes-additional-benefit-in-cardiovascular-diseases-prevention
#1
REVIEW
Cesar Sepúlveda, Iván Palomo, Eduardo Fuentes
Beyond its function in hemostasis, platelets activation has an important role in cardiovascular diseases (CVD) development. There are different clinical conditions that can mediate abnormal platelet activation and favors pathological thrombosis and CVD. These include Hypertension, diabetes and dyslipidemia, all risks factors from CVD development. Different drugs employed in the handled of these conditions have showed decreases platelet activation and related markers. This effect is in part by improved the base condition; however someone of these drugs can modulate platelet targets...
March 22, 2017: Vascular Pharmacology
https://www.readbyqxmd.com/read/28314136/platelet-microparticle-inspired-clot-responsive-nanomedicine-for-targeted-fibrinolysis
#2
Christa L Pawlowski, Wei Li, Michael Sun, Kavya Ravichandran, DaShawn Hickman, Clarissa Kos, Gurbani Kaur, Anirban Sen Gupta
Intravascular administration of plasminogen activators is a clinically important thrombolytic strategy to treat occlusive vascular conditions. A major issue with this strategy is the systemic off-target drug action, which affects hemostatic capabilities and causes substantial hemorrhagic risks. This issue can be potentially resolved by designing technologies that allow thrombus-targeted delivery and site-specific action of thrombolytic drugs. To this end, leveraging a liposomal platform, we have developed platelet microparticle (PMP)-inspired nanovesicles (PMINs), that can protect encapsulated thrombolytic drugs in circulation to prevent off-target uptake and action, anchor actively onto thrombus via PMP-relevant molecular mechanisms and allow drug release via thrombus-relevant enzymatic trigger...
March 14, 2017: Biomaterials
https://www.readbyqxmd.com/read/28288507/anticoagulation-in-cirrhosis-a-new-paradigm
#3
Filippo Leonardi, Nicola De Maria, Erica Villa
The liver plays a crucial role in coagulation cascade. Global hemostatic process is profoundly influenced by the presence of liver disease and its complications. Patients with cirrhosis have impaired synthesis of most of the factors involved in coagulation and fibrinolysis process due to a reduced liver function and altered platelet count secondary to portal hypertension. Altered routine tests and thrombocytopenia were considered in the past as associated with increased risk of bleeding. These concepts explain both the routine use of plasma and/or platelets transfusion in patients with liver cirrhosis, especially before invasive procedures, and why these patients were considered "auto-anticoagulated"...
March 14, 2017: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28286749/factors-xi-and-xii-as-targets-for-new-anticoagulants
#4
REVIEW
Jeffrey I Weitz, James C Fredenburgh
Compared with vitamin K antagonists, the direct oral anticoagulants (DOACs) are simpler to administer and are associated with less intracranial bleeding. Nonetheless, even with the DOACs, bleeding still occurs and many patients with atrial fibrillation fail to receive anticoagulant thromboprophylaxis because of the fear of bleeding. Therefore, there is an urgent need for safer anticoagulants. Recent investigations into the biochemistry of hemostasis and thrombosis have identified new targets for development of novel anticoagulants...
2017: Frontiers in Medicine
https://www.readbyqxmd.com/read/28278197/the-role-of-platelet-and-endothelial-garp-in-thrombosis-and-hemostasis
#5
Elien Vermeersch, Frederik Denorme, Wim Maes, Simon F De Meyer, Karen Vanhoorelbeke, Justin Edwards, Ethan M Shevach, Derya Unutmaz, Hodaka Fujii, Hans Deckmyn, Claudia Tersteeg
BACKGROUND: Glycoprotein-A Repetitions Predominant protein (GARP or LRRC32) is present on among others human platelets and endothelial cells. Evidence for its involvement in thrombus formation was suggested by full knockout of GARP in zebrafish. OBJECTIVES: To evaluate the role of GARP in platelet physiology and in thrombus formation using platelet and endothelial conditional GARP knock out mice. METHODS: Platelet and endothelial specific GARP knockout mice were generated using the Cre-loxP recombination system...
2017: PloS One
https://www.readbyqxmd.com/read/28277061/%C3%AE-granule-biogenesis-from-disease-to-discovery
#6
Chang Hua Chen, Richard W Lo, Denisa Urban, Fred G Pluthero, Walter H A Kahr
Platelets are critical to hemostasis and thrombosis. Upon detecting injury, platelets show a range of responses including the release of protein cargo from α-granules. This cargo is synthesized by platelet precursor megakaryocytes or endocytosed by megakaryocytes and/or platelets. Insights into α-granule biogenesis have come from studies of hereditary conditions where these granules are immature, deficient or absent. Studies of Arthrogryposis, Renal dysfunction, and Cholestasis (ARC) syndrome identified the first proteins essential to α-granule biogenesis: VPS33B and VPS16B...
March 2017: Platelets
https://www.readbyqxmd.com/read/28256580/par1-activation-induces-rapid-changes-in-glutamate-uptake-and-astrocyte-morphology
#7
Amanda M Sweeney, Kelsey E Fleming, John P McCauley, Marvin F Rodriguez, Elliot T Martin, Alioscka A Sousa, Richard D Leapman, Annalisa Scimemi
The G-protein coupled, protease-activated receptor 1 (PAR1) is a membrane protein expressed in astrocytes. Fine astrocytic processes are in tight contact with neurons and blood vessels and shape excitatory synaptic transmission due to their abundant expression of glutamate transporters. PAR1 is proteolytically-activated by bloodstream serine proteases also involved in the formation of blood clots. PAR1 activation has been suggested to play a key role in pathological states like thrombosis, hemostasis and inflammation...
March 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28254816/rxr-ligands-negatively-regulate-thrombosis-and-hemostasis
#8
Amanda J Unsworth, Gagan D Flora, Parvathy Sasikumar, Alexander P Bye, Tanya Sage, Neline Kriek, Marilena Crescente, Jonathan M Gibbins
OBJECTIVE: Platelets have been found to express intracellular nuclear receptors including the retinoid X receptors (RXRα and RXRβ). Treatment of platelets with ligands of RXR has been shown to inhibit platelet responses to ADP and thromboxane A2; however, the effects on responses to other platelet agonists and the underlying mechanism have not been fully characterized. APPROACH AND RESULTS: The effect of 9-cis-retinoic acid, docosahexaenoic acid and synthetic ligand for RXR, methoprene acid on collagen receptor (GPVI) agonists and thrombin-stimulated platelet function; including aggregation, granule secretion, integrin activation, calcium mobilization, integrin αIIbβ3 outside-in signaling and thrombus formation in vitro and in vivo were determined...
March 2, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28251148/emergent-uterine-arterial-embolization-using-n-butyl-cyanoacrylate-in-postpartum-hemorrhage-with-disseminated-intravascular-coagulation
#9
Soichiro Obata, Michi Kasai, Junko Kasai, Kazuo Seki, Zenjiro Sekikawa, Izumi Torimoto, Shigeo Takebayashi, Fumiki Hirahara, Shigeru Aoki
Although it is widely accepted that uterine artery embolization (UAE) is an effective therapeutic strategy for postpartum hemorrhage (PPH), no consensus has been reached regarding the efficacy of UAE in patients with PPH with disseminated intravascular coagulation (DIC). This single-center retrospective cohort study included patients treated with UAE using NBCA for PPH between 2010 and 2015. The patients were divided into DIC and non-DIC groups, according to the obstetrical DIC score and the overt DIC diagnostic criteria issued by the International Society of Thrombosis and Haemostasis (ISTH), and their clinical outcomes were compared...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28250003/tailoring-of-medical-treatment-hemostasis-and-thrombosis-towards-precision-medicine
#10
EDITORIAL
Giovanni Di Minno, Elena Tremoli
No abstract text is available yet for this article.
March 2017: Haematologica
https://www.readbyqxmd.com/read/28245414/-advances-of-studies-on-platelet-gpvi-as-antithrombotic-target-review
#11
Pan Li, Jian-Lin Qiao, Kai-Lin Xu
Platelet activation is a crucial step in both physiological hemostasis and pathological thrombosis, which is an important mean to prevent and treat thrombotic diseases by inhibition of platelet activation. The current clinical antithrombotic therapy showed a high efficiency, but at risk of bleeding. Platelet glycoprotein VI (GPVI) is a platelet-specific receptor and its binding with collagen is critical for platelet activation. GPVI antagonists were shown to effectively inhibit thrombosis and inflammation without influence on normal hemostasis...
February 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28242694/receptor-interacting-protein-kinase-3-promotes-platelet-activation-and-thrombosis
#12
Yiwen Zhang, Jian Zhang, Rong Yan, Jingluan Tian, Yang Zhang, Jie Zhang, Mengxing Chen, Qingya Cui, Lili Zhao, Renping Hu, Miao Jiang, Zhenyu Li, Changgeng Ruan, Sudan He, Kesheng Dai
Previous studies have shown that receptor-interacting protein kinase 3 (RIP3) is involved in many important biological processes, including necroptosis, apoptosis, and inflammation. Here we show that RIP3 plays a critical role in regulating platelet functions and in vivo thrombosis and hemostasis. Tail bleeding times were significantly longer in RIP3-knockout (RIP3(-/-)) mice compared with their wild-type (WT) littermates. In an in vivo model of arteriole thrombosis, mice lacking RIP3 exhibited prolonged occlusion times...
February 27, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28228446/fibrinogen-and-fibrin-in-hemostasis-and-thrombosis
#13
Sravya Kattula, James R Byrnes, Alisa S Wolberg
No abstract text is available yet for this article.
March 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/28223279/distinct-contributions-of-complement-factors-to-platelet-activation-and-fibrin-formation-in-venous-thrombus-development
#14
Saravanan Subramaniam, Kerstin Jurk, Lukas Hobohm, Sven Jäckel, Mona Saffarzadeh, Kathrin Schwierczek, Philip Wenzel, Florian Langer, Christoph Reinhardt, Wolfram Ruf
Expanding evidence indicates multiple interactions between the hemostatic system and innate immunity and the coagulation and complement cascades. Here we show in a tissue factor (TF)-dependent model of flow restriction-induced venous thrombosis that complement factors (C) make distinct contributions to platelet activation and fibrin deposition. C3-deficiency causes prolonged bleeding, reduced thrombus incidence, thrombus size, fibrin and platelet deposition in the ligated inferior vena cava, and diminished platelet activation in vitro...
February 21, 2017: Blood
https://www.readbyqxmd.com/read/28196387/welcome-to-seminars-in-thrombosis-hemostasis-2017-new-2015-impact-factor-and-most-highly-cited-papers
#15
Emmanuel J Favaloro
No abstract text is available yet for this article.
February 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28190865/late-onset-neutropenia-after-rituximab-therapy-in-patients-with-autoimmune-thrombotic-and-hemostatic-disorders-a-single-center-analysis
#16
Yoshiyuki Ogawa, Kunio Yanagisawa, Takuma Ishizaki, Hiroaki Shimizu, Takeki Mitsui, Akitada Ichinose, Yoshihisa Nojima, Hiroshi Handa
Autoimmune thrombotic and hemostatic disorders, caused by autoantibodies against various factors regulating thrombosis and hemostasis, are rare. Rituximab (RTX) is on occasion used for treating these disorders. Late-onset neutropenia (LON) has been described as a side effect of RTX treatment for patients with hemato-oncological and/or rheumatological diseases but not for those with autoimmune thrombotic and hemostatic disorders. Eleven patients with autoimmune thrombotic and hemostatic disorders received RTX in our institution...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28178387/transient-von-willebrand-factor-mediated-platelet-influx-stimulates-liver-regeneration-after-partial-hepatectomy-in-mice
#17
Marc Kirschbaum, Craig N Jenne, Zwanida J Veldhuis, Klaas A Sjollema, Peter J Lenting, Ben N G Giepmans, Robert J Porte, Paul Kubes, Cécile V Denis, Ton Lisman
BACKGROUND & AIMS: In addition to their function in thrombosis and haemostasis, platelets play an important role in the stimulation of liver regeneration. It has been suggested that platelets deliver mitogenic cargo to the regenerating liver, and accumulation of platelets in the regenerating liver has been demonstrated. We studied kinetics of platelet influx in the regenerating liver and investigated the signal that initiates platelet influx. METHODS: We visualized platelets in the liver remnant after partial hepatectomy in mice using intravital microscopy and assessed liver regeneration by examination of liver/body weight ratio and the number of proliferating hepatocytes examined by immunohistochemistry...
February 8, 2017: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/28152437/platelet-function-as-a-risk-factor-for-venous-thromboembolism-in-the-framingham-heart-study
#18
Marja K Puurunen, Shih-Jen Hwang, Chris J O'Donnell, Geoffrey Tofler, Andrew D Johnson
INTRODUCTION: The relationship of venous thromboembolism (VTE) with platelet reactivity is unclear. Platelet function plays a key role in arterial thrombosis. Evidence suggests antiplatelet agents also effects in reducing VTE. Our aim is to describe the role of baseline platelet function in development of VTE in the community-based Framingham Heart Study (FHS) cohort. MATERIALS AND METHODS: Participants in the Framingham Offspring cohort fifth examination and Omni cohort first examination were eligible...
March 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28101869/fibrin-formation-structure-and-properties
#19
John W Weisel, Rustem I Litvinov
Fibrinogen and fibrin are essential for hemostasis and are major factors in thrombosis, wound healing, and several other biological functions and pathological conditions. The X-ray crystallographic structure of major parts of fibrin(ogen), together with computational reconstructions of missing portions and numerous biochemical and biophysical studies, have provided a wealth of data to interpret molecular mechanisms of fibrin formation, its organization, and properties. On cleavage of fibrinopeptides by thrombin, fibrinogen is converted to fibrin monomers, which interact via knobs exposed by fibrinopeptide removal in the central region, with holes always exposed at the ends of the molecules...
2017: Sub-cellular Biochemistry
https://www.readbyqxmd.com/read/28079982/recombinant-soluble-apyrase-apt102-inhibits-thrombosis-and-intimal-hyperplasia-in-vein-grafts-without-adversely-affecting-hemostasis-or-re-endothelialization
#20
Y Ji, O Adeola, T L Strawn, S S Jeong, R Chen, W P Fay
BACKGROUND: Occlusion of vein grafts (VGs) after bypass surgery due to thrombosis and intimal hyperplasia (IH) is a major clinical problem. Apyrases are enzymes that scavenge extracellular ATP and ADP and promote adenosine formation at sites of vascular injury and hence have potential to inhibit vein graft pathology. OBJECTIVES: We examined the effects of recombinant soluble human apyrase, APT102, on platelets, smooth muscle cells (SMCs), and endothelial cells (ECs) in vitro and thrombosis and IH in murine VGs...
January 12, 2017: Journal of Thrombosis and Haemostasis: JTH
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