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Anti coagulants

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https://www.readbyqxmd.com/read/29231707/sulfonate-groups-and-saccharides-as-essential-structural-elements-in-heparin-mimicking-polymers-used-as-surface-modifiers-optimization-of-relative-contents-for-anti-thrombogenic-properties
#1
Xianshuang Chen, Hao Gu, Zhonglin Lyu, Xiaoli Liu, Lei Wang, Hong Chen, John Law Brash
Blood compatibility is a long sought-after goal in biomaterials research, but remains an elusive one, and in spite of extensive work in this area, there is still no definitive information on the relationship between material properties and blood responses such as coagulation and thrombus formation. Materials modified with heparin-mimicking polymers (HMP) have shown promise, and indeed may be seen as comparable to materials modified with heparin itself. In this work, heparin was conceptualized as consisting of two major structural elements: saccharide-containing and sulfonate-containing units, and polymers based on this concept were developed...
December 12, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29230608/combinatorial-therapy-with-two-pro-coagulants-and-one-osmotic-agent-reduces-the-extent-of-the-lesion-in-the-acute-phase-of-spinal-cord-injury-in-the-rat
#2
Mathieu Boutonnet, Elisabeth Laemmel, Eric Vicaut, Jacques Duranteau, Marc Soubeyrand
BACKGROUND: Spinal cord injury (SCI) is a complex disease that leads to a motor, sensitive, and vegetative impairment. So far, single therapies are ineffective for treating SCI in humans and a multifactorial therapeutic approach may be required. The aim of this work was to assess the effect of a triple therapy (TT) associating two pro-coagulant therapies (tranexamic acid and fibrinogen) with an anti-edema therapy (hypertonic saline solution), on the extent of the lesion 24 h post-injury...
December 11, 2017: Intensive Care Medicine Experimental
https://www.readbyqxmd.com/read/29229544/a-new-textured-polyphosphazene-biomaterial-with-improved-blood-coagulation-and-microbial-infection-responses
#3
Li-Chong Xu, Zhongjing Li, Zhicheng Tian, Chen Chen, Harry R Allcock, Christopher A Siedlecki
A new poly[bis(octafluoropentoxy) phosphazene] (OFP) was synthesized for the purpose of blood contacting medical devices. OFP was further either developed into crosslinkable polyphosphazene (X-OFP) or blended with polyurethane (PU) as the mixture (OFP/PU) for improvement of mechanical property of polyphosphazene polymers. All the materials were fabricated as smooth films or further textured with submicron pillars for the assay of antimicrobial and antithrombotic properties. Results showed that crosslinkable OFP (X-OFP) and blends of OFP/PU successfully improved the mechanical strength of OFP and fewer defects of pillars were found on the textured polyphosphazene surfaces...
December 8, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/29225598/innovative-approaches-for-immune-tolerance-to-factor-viii-in-the-treatment-of-hemophilia-a
#4
REVIEW
Alexandra Sherman, Moanaro Biswas, Roland W Herzog
Hemophilia A (coagulation factor VIII deficiency) is a debilitating genetic disorder that is primarily treated with intravenous replacement therapy. Despite a variety of factor VIII protein formulations available, the risk of developing anti-dug antibodies ("inhibitors") remains. Overall, 20-30% of patients with severe disease develop inhibitors. Current clinical immune tolerance induction protocols to eliminate inhibitors are not effective in all patients, and there are no prophylactic protocols to prevent the immune response...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29218495/systemic-epstein-barr-virus-positive-t-cell-lymphoproliferative-disorders-of-childhood-with-fulminant-leukocytosis-and-tumor-lysis-a-case-report-with-autopsy-findings
#5
Sachie Wada, Takayuki Suzuki, Koichi Kitazume, Akira Fujita, Seiichiro Shimizu
Systemic Epstein-Barr virus (EBV)-positive T-cell lymphoproliferative disorders (T-LPD) of childhood is an extremely rare disease characterized by an aggressive clinical course and very poor prognosis. We report an adolescent male with systemic EBV-positive T-LPD of childhood after primary EBV infection, resulting in a fatal clinical course within 9 days, along with autopsy findings. A 19-year-old male without an immunocompromised status presented with an acute onset of high fever, and was hospitalized for persistent fever, vomiting and diarrhea on the 5th day from onset...
December 7, 2017: International Journal of Hematology
https://www.readbyqxmd.com/read/29216953/-significance-of-heparin-in-the-treatment-of-patients-with-sepsis
#6
Qinlong Sun, Erzhen Chen
The latest definition of sepsis (Sepsis-3) is the life-threatening organ dysfunction due to overreaction of immune system caused by infection. The situation can develop into multiple organ dysfunction syndromes (MODS). In the pathological process of pathogen invasion, a large number of inflammatory factors directly damage organ function, while dysfunction of coagulation system is also involved in this process. With the overreaction of inflammation, disseminated intravascular coagulation (DIC) occurred, which further exacerbated organ damage...
December 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29216936/-experimental-basis-and-clinical-practice-of-bacterial-poison-and-cure-sepsis
#7
Zhijun Li, Yinping Li
Since the 20th century, research team of Professor Wang Jinda in the Tianjin First Central Hospital has been using blood circulation drugs to rescue critically ill patients for 70 years. With the deepening of the understanding of sepsis, put forward the "bacteria and inflammation and governance" theory, and the use of blood circulation drugs Xuebijing injection with anti-endotoxin and inflammatory mediators effect in the treatment of sepsis, some clinical efficacy has been found. However, in recent years, the progress of treatment of sepsis at home and abroad is slow, we review a series of animal experiments since the late of 1980s, and found that small thrombosis in the microcirculation and coagulation disorders play a more important role in the development of local infection to sepsis transition...
December 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29212894/hiv-and-cardiovascular-disease-role-of-immunometabolic-perturbations
#8
REVIEW
Eman Teer, M Faadiel Essop
The successful rollout of anti-retroviral therapy ensured that HIV is increasingly managed as a chronic condition. HIV-positive persons are therefore exhibiting increased cardiovascular complications. This review focuses on the emerging role of "immunometabolism" within the context of HIV-related immune dysregulation and cardiovascular disease onset. Here, persistent immune activation contributes to pathophysiological perturbations during early infection, resulting in immune cell metabolic reprogramming and the activation of coagulation pathways in HIV-positive individuals...
January 1, 2018: Physiology
https://www.readbyqxmd.com/read/29202212/nebulized-heparin-attenuates-pulmonary-coagulopathy-and-inflammation-through-alveolar-macrophages-in-a-rat-model-of-acute-lung-injury
#9
Laura Chimenti, Marta Camprubí-Rimblas, Raquel Guillamat-Prats, Maria Nieves Gomez, Jessica Tijero, Lluis Blanch, Antonio Artigas
Objective Alveolar macrophages play a key role in the development and resolution of acute respiratory distress syndrome (ARDS), modulating the inflammatory response and the coagulation cascade in lungs. Anti-coagulants may be helpful in the treatment of ARDS. This study investigated the effects of nebulized heparin on the role of alveolar macrophages in limiting lung coagulation and inflammatory response in an animal model of acute lung injury (ALI). Methods Rats were randomized to four experimental groups...
November 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29202211/acute-haemarthrosis-in-the-haemophilia-a-rat-generates-a-local-and-systemic-proinflammatory-response
#10
Karin M Lövgren, Kristine R Christensen, Wiktor Majewski, Olga Østrup, Søren Skov, Bo Wiinberg
Background Replacement therapy with coagulation factor VIII (FVIII) concurrent with bleeds (on-demand) in haemophilia A (HA) patients has been hypothesized to increase the risk for antidrug antibodies (inhibitors). A danger signal environment, characterized by tissue damage and inflammation at the site of a bleed, is thought to contribute to the anti-FVIII response. The nature of this inflammatory reaction is, however, not fully known, and new insights will be valuable for both managing inhibitors and understanding arthropathy development...
November 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29202210/differential-effects-on-haemostatic-markers-by-metformin-and-the-contraceptive-pill-a-randomized-comparative-trial-in-pcos
#11
Genia F Burchall, Terrence J Piva, Sanjeeva Ranasinha, Helena J Teede
Background Polycystic ovarian syndrome (PCOS) affects up to 18% of reproductive-aged women with increased risks of cardiovascular disease and venous thromboembolic disease, related to metabolic and hormonal features, obesity and an apparent hypofibrinolytic state, possibly exacerbated by current PCOS treatments. Objective To investigate and compare haemostatic impacts of common pharmacological treatments and explore relationships with hormonal and metabolic variables in PCOS. Patients/Methods This mechanistic sub-study using biobanked samples from a 6-month randomized comparative trial of pharmacological treatments assessed pro- and anti-thrombotic markers and overall haemostatic activity...
November 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29193737/laboratory-testing-in-patients-treated-with-direct-oral-anticoagulants-a-practical-guide-for-clinicians
#12
REVIEW
Jonathan Douxfils, Walter Ageno, Charles-Marc Samama, Sarah Lessire, Hugo Ten Cate, Peter Verhamme, Jean-Michel Dogné, François Mullier
One of the key benefits of the direct oral anticoagulants (DOACs) is that they do not require routine laboratory monitoring. Nevertheless, assessment of DOAC exposure and anticoagulant effects may become useful in various clinical scenarios. The four approved DOACs - apixaban, dabigatran etexilate, edoxaban and rivaroxaban - have different characteristics impacting assay selection and the interpretation of results. This article provides an updated overview on 1) which test to use (and their advantages and limitations), 2) when to assay DOAC levels, 3) how to interpret the results relating to bleeding risk, emergency situations and perioperative management, and 4) what is the impact of DOACs on routine and specialised coagulation assays...
November 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29193703/inflammation-and-thrombosis-roles-of-neutrophils-platelets-and-endothelial-cells-and-their-interactions-in-thrombus-formation-during-sepsis
#13
REVIEW
Toshiaki Iba, Jerrold H Levy
The inflammatory response and the activation of coagulation are two important responses in a host's defense against infection. These mechanisms do not work independently but cooperate in a complex and synchronous manner. Recent research has also shed light on the critical role of thrombus formation that prevents the dissemination of microbes. The cellular components of blood vessels, leukocytes, platelets, erythrocytes, and vascular endothelial cells play significant roles in the development of thrombi in combination with activation of the coagulation system...
November 29, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29189637/strategies-for-prevention-and-management-of-bleeding-following-pediatric-cardiac-surgery-on-cardiopulmonary-bypass-a-scoping-review
#14
Kristina Siemens, Dilanee P Sangaran, Beverley J Hunt, Ian A Murdoch, Shane M Tibby
OBJECTIVE: We aimed to systematically describe, via a scoping review, the literature reporting strategies for prevention and management of mediastinal bleeding post pediatric cardiopulmonary bypass surgery. DATA SOURCES: MEDLINE, EMBASE, PubMed, and Cochrane CENTRAL Register. STUDY SELECTION: Two authors independently screened publications from 1980 to 2016 reporting the effect of therapeutic interventions on bleeding-related postoperative outcomes, including mediastinal drain loss, transfusion, chest re-exploration rate, and coagulation variables...
November 16, 2017: Pediatric Critical Care Medicine
https://www.readbyqxmd.com/read/29189289/meibomian-glands-and-ocular-surface-changes-after-closure-of-meibomian-gland-orifices-in-rabbits
#15
Youngsub Eom, Ji Yun Han, Boram Kang, Ho Sik Hwang, Hyung Keun Lee, Hyo Myung Kim, Jong Suk Song
PURPOSE: To investigate changes in the corneal surface, tear film, and meibomian glands after meibomian gland orifice closure. METHODS: Seventy-two eyes of 36 rabbits were used. In the study group (n = 36), the meibomian gland orifices of both upper and lower eyelids in the right eyes were electrosurgically coagulated. The 36 untreated left eyes were used as controls. Corneal wetting properties were measured 1, 3, 7, and 14 days after coagulation. The eyelid sections were stained with anti-cytokeratin (CK)1, CK5, and CK6 antibody 8 weeks after coagulation...
November 16, 2017: Cornea
https://www.readbyqxmd.com/read/29182588/fluorinated-analog-nmr-s-of-organosulfur-compounds-from-garlic-allium-sativum-synthesis-chemistry-and-anti-angiogenesis-and-antithrombotic-studies
#16
Eric Block, Benjamin Bechand, Sivaji Gundala, Abith Vattekkatte, Kai Wang, Shaymaa S Mousa, Kavitha Godugu, Murat Yalcin, Shaker A Mousa
We describe the synthesis, reactivity, and antithrombotic and anti-angiogenesis activity of difluoroallicin (S-(2-fluoroallyl) 2-fluoroprop-2-ene-1-sulfinothioate) and S-2-fluoro-2-propenyl-l-cysteine, both easily prepared from commercially available 3-chloro-2-fluoroprop-1-ene, as well as the synthesis of 1,2-bis(2-fluoroallyl)disulfane, 5-fluoro-3-(1-fluorovinyl)-3,4-dihydro-1,2-dithiin, trifluoroajoene ((E,Z)-1-(2-fluoro-3-((2-fluoroallyl)sulfinyl)prop-1-en-1-yl)-2-(2-fluoroallyl)disulfane), and a bis(2-fluoroallyl)polysulfane mixture...
November 28, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29180933/implementation-of-an-enhanced-recovery-after-surgery-eras-protocol-in-a-gynaecology-department-the-follow-up-at-1-year
#17
Tomasz Nikodemski, Agnieszka Biskup, Aleksandra Taszarek, Małgorzata Albin, Anita Chudecka-Głaz, Aneta Cymbaluk-Płoska, Janusz Menkiszak
Aim of the study: An ERAS protocol provides the latest perioperative care principles, whose primary aim is to reduce complication rates, and therefore mortality. The aim of this study is to establish the progress of the ERAS pathway implementation in our gynaecology department. Material and methods: This was a retrospective analysis of two sets of 100 consecutive medical records: patients treated before (PRE-ERAS) and after (ERAS) introduction of the ERAS protocol...
2017: Contemporary Oncology Współczesna Onkologia
https://www.readbyqxmd.com/read/29174123/intraoperative-anesthetic-management-of-lung-transplantation-center-specific-practices-and-geographic-and-centers-size-differences
#18
Roland Tomasi, David Betz, Sophie Schlager, Tobias Kammerer, Dominik J Hoechter, Thomas Weig, Peter Slinger, Laura V Klotz, Bernhard Zwißler, Nandor Marczin, Vera von Dossow
OBJECTIVE: Although increasing evidence in lung transplantation (LTx) suggests that intraoperative management could influence outcomes, there are no guidelines available regarding intraoperative management of LTx. The overall goal of the study was to assess geographic and center volume-specific clinical practices in perioperative management. DESIGN: Prospective data analysis. SETTING: Online survey from a single-center university hospital...
May 17, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29172201/-effect-of-platelet-concentrate-transfusion-on-prognosis-of-patients-with-intracerebral-hemorrhage-treated-with-anti-platelet-agents
#19
Kazutaka Sugimoto, Hideyuki Ishihara, Mizuya Shinoyama, Hirokazu Sadahiro, Michiyasu Suzuki
BACKGROUND: A recent randomized control study(the PATCH trial)found no beneficial effect of platelet concentrate(PC)transfusion on the prognosis of patients with intracerebral hemorrhage(ICH)treated with anti-platelet agents(APAs). However, the trial excluded surgical cases. In this study, we examined the effect of PC on ICH, including patients who received surgical treatment. METHOD: A retrospective cohort analysis was performed in 23(11 males, 12 females)of 35 patients diagnosed with ICH and treated with APAs between January 2010 and December 2015 at the Department of Neurosurgery, Yamaguchi University Hospital...
November 2017: No Shinkei Geka. Neurological Surgery
https://www.readbyqxmd.com/read/29170301/4%C3%A2-the-risk-of-deterioration-in-ct-identified-mild-traumatic-brain-injury-a-systematic-review-and-meta-analysis
#20
Carl Marincowitz, Fiona Lecky, William Townend, Aditya Borakati, Trevor Sheldon
BACKGROUND: The optimal management of minor head injured patients with brain injury identified by CT imaging is unclear. Some guidelines recommend routine hospital admission of GCS13-15 patients with traumatic brain (TBI) injury identified by CT imaging. Others argue that selected lower-risk patients can be discharged from the Emergency Department (ED). OBJECTIVE: To estimate the risk of death, neurosurgery and clinical deterioration minor head injured patients with TBI identified by CT imaging, and assess which factors affect the risk of these outcomes...
December 2017: Emergency Medicine Journal: EMJ
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