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Coagulation & Hemostasis

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https://www.readbyqxmd.com/read/28443142/effects-of-androgen-deprivation-therapy-on-hypercoagulability-in-prostate-cancer-patients-a-prospective-longitudinal-study
#1
Harmanpreet Kaur, D Robert Siemens, Angela Black, Sylvia Robb, Spencer Barr, Charles H Graham, Maha Othman
INTRODUCTION: Androgen-deprivation therapy (ADT) is the mainstay of systemic therapy for advanced prostate cancer (PCa), but has significant adverse effects, including increasing concern for cardiovascular (CV) and thromboembolic (TE) complications. This study carefully investigates any relationship between ADT use and hypercoagulability as a possible mechanism of these adverse effects. METHODS: We performed a prospective, longitudinal study in a cohort of patients with advanced PCa initiating ADT (n=18)...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28440204/apixaban-metabolism-pharmacologic-properties-and-drug-interaction
#2
Peter Kubisz, Lucia Stanciakova, Miroslava Dobrotova, Matej Samos, Marian Mokan, Jan Stasko
BACKGROUND: Apixaban is an oral, potent, highly selective, reversible and direct inhibitor of activated coagulation factor X, that is the end point of the intrinsic and extrinsic coagulation pathway. Additionally, apixaban has the capacity to indirectly inhibit thrombin-induced platelet aggregation. This new oral anticoagulant represents an immediate-release form of peroral drug with quick dissolution, linear pharmacokinetics, good bioavailability and rapid onset and offset of action...
April 24, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/28437457/tissue-factor-dependent-coagulation-activation-by-heme-a-thromboelastometry-study
#3
Gleice Regina de Souza, Bidossessi Wilfried Hounkpe, Maiara Marx Luz Fiusa, Marina Pereira Colella, Joyce M Annichino-Bizzacchi, Fabiola Traina, Fernando Ferreira Costa, Erich Vinicius De Paula
Heme has been characterized as potent trigger of inflammation. In hemostasis, although heme has been shown to both induce and inhibit different compartments of hemostasis, its net effect on the hemostatic balance, and the biological relevance of these effects remain to be determined. Herein we evaluated the effect of heme on hemostasis using a global assay able to generate clinically relevant data in several other complex hemostatic diseases. Citrated whole blood samples from healthy participants were stimulated by heme or vehicle and incubated for 4h at 37°C...
2017: PloS One
https://www.readbyqxmd.com/read/28422327/association-between-the-ulcer-status-and-the-risk-of-delayed-bleeding-after-the-endoscopic-mucosal-resection-of-colon
#4
Gwang-Un Kim, Myeongsook Seo, Eun Mi Song, Sung Wook Hwang, Sang Hyoung Park, Dong-Hoon Yang, Jeong-Sik Byeon
BACKGROUND AND AIM: Bleeding is the most common adverse event following colonoscopic endoscopic mucosal resection (EMR). We aimed to assess the clinical outcomes of a colon EMR according to the post-EMR ulcer status, and determine the risk factors of delayed postpolypectomy bleeding (DPPB) based on the post-EMR ulcer status. METHODS: We retrospectively reviewed the medical records and endoscopic images of patients who underwent EMR of colon polyps with diameters of ≥5 mm...
April 19, 2017: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28405179/a-review-of-studies-of-the-proteomes-of-circulating-microparticles-key-roles-for-galectin-3-binding-protein-expressing-microparticles-in-vascular-diseases-and-systemic-lupus-erythematosus
#5
REVIEW
Christoffer T Nielsen, Ole Østergaard, Niclas S Rasmussen, Søren Jacobsen, Niels H H Heegaard
Subcellular microvesicles (MVs) have attracted increasing interest during the past decades. While initially considered as inert cellular debris, several important roles for MVs in physiological homeostasis, cancer, cardiovascular, and autoimmune diseases have been uncovered. Although still poorly understood, MVs are involved in trafficking of information from cell-to-cell, and are implicated in the regulation of immunity, thrombosis, and coagulation. Different subtypes of extracellular MVs exist. This review focuses on the cell membrane-derived shedded MVs (ranging in size from 200 to 1000 nm) typically termed microparticles (MPs)...
2017: Clinical Proteomics
https://www.readbyqxmd.com/read/28400758/leptospira-infection-interferes-with-the-prothrombinase-complex-assembly-during-experimental-leptospirosis
#6
Monica L Vieira, Sonia A de Andrade, Zenaide M Morais, Silvio A Vasconcellos, Maria Lucia Z Dagli, Ana Lucia T O Nascimento
Leptospirosis is a worldwide zoonotic and neglected infectious disease of human and veterinary concern, caused by pathogenic Leptospira species. Although bleeding is a common symptom of severe leptospirosis, the cause of hemorrhage is not completely understood. In severe infections, modulation of hemostasis by pathogens is an important virulence mechanism, and hemostatic impairments such as coagulation/fibrinolysis dysfunction are frequently observed. Here, we analyze the coagulation status of experimentally infected hamsters in an attempt to determine coagulation interferences and the origin of leptospirosis hemorrhagic symptomatology...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28395496/-causes-and-management-of-pediatric-spontaneous-tonsillar-haemorrhage
#7
Z B Wu, H G Pan, Y S Teng, D L Zhang, X Y Ma, S H Han, L Li
Objective: To analyze the causes and management plan of pediatric spontaneous tonsillar haemorrhage(STH). Methods: According to the criteria of STH difined by Griffies, patients with STH from December 2013 to January 2016 were included in this retrospective study. Results: A total of 11 patients were reviewed. The etiological diagnosis included 3 pediatric Epstein-Barr virus associated infectious mononucleosis(EBV-IM), 3 suspected pediatric EBV-IM to 3 acute suppurative tonsillitis, 1 acute viral tonsillitis and 1 hemophilia A...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28393462/current-use-of-factor-concentrates-in-pediatric-cardiac-anesthesia
#8
REVIEW
Nina A Guzzetta, Glyn D Williams
Excessive bleeding following pediatric cardiopulmonary bypass is associated with increased morbidity and mortality, both from the effects of hemorrhage and the therapies employed to achieve hemostasis. Neonates and infants are especially at risk because their coagulation systems are immature, surgeries are often complex, and cardiopulmonary bypass technologies are inappropriately matched to patient size and physiology. Consequently, these young children receive substantial amounts of adult-derived blood products to restore adequate hemostasis...
April 10, 2017: Paediatric Anaesthesia
https://www.readbyqxmd.com/read/28389263/post-ritual-circumcision-bleeding-characteristics-and-treatment-outcome
#9
Roy Mano, Amihay Nevo, Bezalel Sivan, Roy Morag, David Ben-Meir
OBJECTIVE: To report the characteristics, treatment, and short term outcome of neonatal post-circumcision bleeding, and identify predictors of surgical treatment. METHODS: The medical records of 90 consecutive neonates who presented to the emergency room with post-circumcision bleeding between 2009 and 2014 were reviewed. Circumcisions were performed using the traditional Mogen shield device. The study endpoint was surgical intervention for hemostasis. Predictors of surgical treatment were evaluated...
April 4, 2017: Urology
https://www.readbyqxmd.com/read/28386291/bletilla-striata-micron-particles-function-as-a-hemostatic-agent-by-promoting-rapid-blood-aggregation
#10
Chen Zhang, Rui Zeng, Zhencheng Liao, Chaomei Fu, Hui Luo, Hanshuo Yang, Yan Qu
The human body cannot control blood loss without treatment. Available hemostatic agents are ineffective at treating cases of severe bleeding and are expensive or raise safety concerns. Bletilla striata serve as an inexpensive, natural, and promising alternative. However, no detailed studies on its hemostatic approach have been performed. The aim of this study was to examine the hemostatic effects of B. striata Micron Particles (BSMPs) and their hemostatic mechanisms. We prepared and characterized BSMPs of different size ranges and investigated their use as hemostatic agent...
2017: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/28379482/investigating-proteins-and-proteases-composing-amniotic-and-allantoic-fluids-during-chicken-embryonic-development
#11
M Da Silva, V Labas, Y Nys, S Réhault-Godbert
In amniotes, the amniotic fluid is a significant contributor to fetal development and health. While numerous studies have been conducted in mammalian amniotic fluid, the composition of amniotic and other extraembryonic fluids in avian egg along with their physiological functions remain largely unexplored. In such a context, our objective was to characterize the chicken amniotic fluid (AmF) and allantoic fluid (AlF) properties, protein composition, and some associated functions from day 8 to day 16 of incubation...
March 31, 2017: Poultry Science
https://www.readbyqxmd.com/read/28368336/serum-concentrations-of-angiopoietin-2-and-soluble-fms-like-tyrosine-kinase-1-sflt-1-are-associated-with-coagulopathy-among-patients-with-acute-pancreatitis
#12
Paulina Dumnicka, Beata Kuśnierz-Cabala, Mateusz Sporek, Małgorzata Mazur-Laskowska, Krzysztof Gil, Marek Kuźniewski, Piotr Ceranowicz, Zygmunt Warzecha, Artur Dembiński, Joanna Bonior, Ryszard Drożdż
In severe acute pancreatitis (SAP), systemic inflammation leads to endothelial dysfunction and activation of coagulation. Thrombotic disorders in acute pancreatitis (AP) include disseminated intravascular coagulation (DIC). Recently, angiopoietin-2 and soluble fms-like tyrosine kinase 1 (sFlt-1) were proposed as markers of endothelial dysfunction in acute states. Our aim was to assess the frequency of coagulation abnormalities in the early phase of AP and evaluate the relationships between serum angiopoietin-2 and sFlt-1 and severity of coagulopathy...
April 2, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28363553/reinforced-collagen-with-oxidized-microcrystalline-cellulose-shows-improved-hemostatic-effects
#13
Hui Li, Weilu Cheng, Ke Liu, Lei Chen, Yudong Huang, Xiaofeng Wang, Zhiyong Lv, Jinmei He, Cheng Li
Sponges composed of different levels of composite collagen/oxidized microcrystalline cellulose (collagen/OMCC), denoted M1-M4, were studied to improve the hemostatic effect of single-collagen sponges. Surface morphological observations showed that structural combinations and intermolecular interactions occurred between collagen and OMCC in the composites. M2 presented the best physical properties and platelet activation and was thus selected for the investigations of the in vitro coagulation time and hemostatic and biological effects on animals...
June 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28363081/proposal-and-application-of-a-novel-disseminated-intravascular-coagulation-scoring-system-in-the-florida-manatee-trichechus-manatus-latirostris
#14
Ashley Barratclough, Ray L Ball, Ruth Francis Floyd, Roger L Reep, Bobbi J Conner
  Disseminated intravascular coagulopathy (DIC) is an acquired disorder of hemostasis resulting in activation of the coagulation and fibrinolytic pathways. It is reported secondarily to multiple disease processes and can be associated with increased mortality. Previous research at Tampa's Lowry Park Zoo (LPZ) demonstrated that Florida manatees ( Trichechus manatus latirostris) with cold stress syndrome (CSS) demonstrated thromboembolic disease. The object of this retrospective study was to establish the presence and clinical relevance of DIC in Florida manatees admitted to LPZ for rehabilitation from 07 March 2010 to 15 August 2015...
March 2017: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/28362859/impact-of-experimental-hypercalcemia-on-routine-haemostasis-testing
#15
Giuseppe Lippi, Gian Luca Salvagno, Giorgio Brocco, Matteo Gelati, Elisa Danese, Emmanuel J Favaloro
BACKGROUND: The blood to anticoagulant ratio is standardized according to the physiological calcium concentration in blood samples conventionally used for hemostasis testing. Specifically, one fixed volume of 0.109 mmol/L sodium citrate is added to 9 volumes of blood. Since little is known about the impact of hypercalcemia on the calcium-binding capacity of citrate, this study was planned to investigate the effect of experimental hypercalcemia on routine hemostasis testing. METHODS: Fifteen pooled citrated plasmas with matching lithium-heparin pooled plasma from patients with different values of prothrombin time (PT) were divided in three aliquots of 0...
2017: PloS One
https://www.readbyqxmd.com/read/28361572/characterization-of-the-thrombin-generation-profile-in-systemic-lupus-erythematosus
#16
A Kern, E Barabás, A Balog, Sz Burcsár, M Kiszelák, B Vásárhelyi
Systemic lupus erythematosus (SLE) is a multisystemic inflammatory autoimmune disorder. Thrombotic events occur at a higher incidence among SLE patients. The investigation of thrombin generation (TG) with calibrated automated thrombogram (CAT) test as a global hemostasis assay is applicable for the overall functional assessment of the hemostasis. The aim of this study was to characterize the hemostatic alterations observed in SLE by CAT assay. In this study, CAT parameters and basic coagulation parameters of SLE patients (n = 22) and healthy control subjects (n = 34) were compared...
March 1, 2017: Physiology International
https://www.readbyqxmd.com/read/28359132/point-of-care-testing-in-liver-disease-and-liver-surgery
#17
Lasitha Abeysundara, Susan V Mallett, Ben Clevenger
The alterations in coagulation and hemostasis that accompany liver disease are complex, and while patients with this disease have traditionally been perceived as having a bleeding diathesis, it is now understood that in stable patients hemostasis is "re-balanced." Hepatic surgery, and particularly liver transplantation, can be associated with large fluid shifts, massive bleeding, and coagulopathy, as well as postoperative thrombosis. Point-of-care tests (POCTs) of coagulation facilitate goal-directed treatments and hemostatic monitoring in dynamic environments where the coagulation status can alter rapidly and often unpredictably...
March 30, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28355654/experience-of-point-of-care-devices-in-obstetrical-care
#18
Ove Karlsson
During pregnancy and puerperium, there are pronounced hemostatic changes characterized by increased coagulability and decreased fibrinolysis. In addition, hemostasis can change dramatically during obstetric complications. Several reports have described substandard management of hemostatic defects in this setting and state the need for guidelines and better care. Point-of-care devices can assess hemostatic status and are especially suitable in perioperative settings. Using point-of-care devices, no time is required for transportation, allowing faster availability of results and providing potential for better care of the patient...
March 29, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28347811/whole-blood-coagulation-assays-rotem-and-t-tas-to-monitor-dabigatran-treatment
#19
Viktor Taune, Håkan Wallén, Anna Ågren, Gunilla Gryfelt, Carolina Sjövik, Anna M Wintler, Rickard E Malmström, Agneta Wikman, Mika Skeppholm
BACKGROUND: A rapid and reliable assessment of the dabigatran effect is desirable in dabigatran treated patients with uncontrolled bleeding or before acute surgery. OBJECTIVE: To evaluate how the viscoelastic point-of-care test Rotational thromboelastometry (ROTEM) and Total Thrombus-formation system (T-TAS), which studies thrombus formation under flowing conditions, correlate with dabigatran concentrations in patients with atrial fibrillation (AF). METHOD: ROTEM using the reagents In-tem, Ex-tem, Fib-tem or low tissue factor concentration (TF), and T-TAS with the AR-chip (shear rate 600s(-1), representing flow in large arteries) were investigated in whole blood samples...
March 18, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28347203/thromboelastometric-assessment-of-hemostasis-in-newborn-piemontese-calves
#20
Antonio Borrelli, Angelica Botto, Cristiana Maurella, Sara Falco, Elena Pagani, Barbara Miniscalco, Alberto Tarducci, Barbara Bruno
We investigated possible age-related differences in coagulation profiles in bovine species by means of rotational thromboelastometric (ROTEM) analysis. We evaluated hemostasis by ROTEM in newborn Piemontese calves at birth (T0), 8 d (T8), and 15 d (T15) of age and compared the ROTEM results obtained in 16 newborn calves with 28 adult Piemontese cattle. Hemostasis was evaluated using standard coagulation tests and ROTEM analysis, obtaining in-TEM, ex-TEM, and fib-TEM profiles. Statistically significant differences in the ROTEM profiles of newborn calves were found between T0 and T8 and between T0 and T15 ( p < 0...
March 1, 2017: Journal of Veterinary Diagnostic Investigation
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