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https://www.readbyqxmd.com/read/28646588/duration-and-cessation-characteristics-of-heparinization-after-finger-replantation-a-retrospective-analysis-of-outcomes
#1
Johnny I Efanov, Julia Khriguian, Sophie Cassier, Elie Boghossian, Patrick G Harris, Joseph Bou-Merhi, M A Danino
BACKGROUND: To prevent postoperative thrombosis, indications for anticoagulation in finger replantation have been described, but no consensus has yet been found for cessation protocols. The aim of this study is to investigate cessation methods of intravenous anticoagulation after finger replantation. METHODS: A retrospective review of all patients treated for a finger replantation between December 2014 and July 2016 was performed. Only those who required postoperative treatment with intravenous heparin were extracted...
June 24, 2017: Microsurgery
https://www.readbyqxmd.com/read/28646555/low-thrombogenic-fibrin-heparin-coating-promotes-in-vitro-endothelialization
#2
Ondřej Kaplan, Teresa Hierlemann, Stefanie Krajewski, Julia Kurz, Martina Nevoralová, Milan Houska, Tomáš Riedel, Zuzana Riedelová, Jana Zárubová, Hans P Wendel, Eduard Brynda
Long-term performance of implanted cardiovascular grafts can be ensured if living endothelium overgrows their surface. Surface modifications to implants are therefore being sought that can encourage endothelialization while preventing thrombus formation until the natural endothelium is formed. In the present study, heparin was covalently attached to a fibrin mesh grown from a PVC substrate surface by the catalytic action of surface immobilized thrombin on a fibrinogen solution. The coating prevented platelet activation, thrombin generation and clot formation, and reduced inflammatory reactions when exposed to fresh human whole blood circulating in a Chandler loop model...
June 24, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28646118/direct-oral-anticoagulants-for-treatment-of-hit-update-of-hamilton-experience-and-literature-review
#3
Theodore E Warkentin, Menaka Pai, Lori-Ann Linkins
Direct oral anticoagulants (DOACs) are attractive options for treatment of heparin-induced thrombocytopenia (HIT). We report our continuing experience in Hamilton, Canada, since January 1, 2015 (when we completed our prospective rivaroxaban for HIT study) using rivaroxaban for serologically-confirmed HIT (4Ts score ≥4 points, PF4/heparin immunoassay-positive, serotonin-release assay positive). We also performed a literature review of HIT treatment using a DOAC (rivaroxaban, apixaban, dabigatran, edoxaban)...
June 23, 2017: Blood
https://www.readbyqxmd.com/read/28645809/enhanced-in-vivo-retention-of-low-dose-bmp-2-via-heparin-microparticle-delivery-does-not-accelerate-bone-healing-in-a-critically-sized-femoral-defect
#4
Marian H Hettiaratchi, Tel Rouse, Catherine Chou, Laxminarayanan Krishnan, Hazel Y Stevens, Mon-Tzu A Li, Todd C McDevitt, Robert E Guldberg
Bone morphogenetic protein-2 (BMP-2) is an osteoinductive growth factor used clinically to induce bone regeneration and fusion. Some complications associated with BMP-2 treatment have been attributed to rapid release of BMP-2 from conventional collagen scaffolds, motivating the development of tunable sustained-release strategies. We incorporated BMP-2-binding heparin microparticles (HMPs) into a hydrogel scaffold to improve spatiotemporal control of BMP-2 delivery to large bone defects. HMPs pre-loaded with BMP-2 were mixed into alginate hydrogels and compared to hydrogels containing BMP-2 alone...
June 20, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28645764/electrochemical-behavior-of-pb-ii-on-a-heparin-modified-chitosan-graphene-nanocomposite-film-coated-glassy-carbon-electrode-and-its-sensitive-detection
#5
Priya T, Dhanalakshmi N, Thinakaran N
In this study, we developed a novel composite material containing biological macromolecules like heparin and chitosan coated on reduced graphene oxide (rGO) for the modification of glassy carbon electrode (hep/CS-rGO/GC). It can be applied for the sensitive electrochemical detection of Pb(2+) by square wave anodic stripping voltammetry (SWASV). The physicochemical analysis such as XRD, FTIR, FESEM and Raman spectroscopy techniques revealed that an effective functionalization occurred at the rGO surface. The consequence of deposition and stripping of metal ions by various electrochemical parameters such as supporting electrolytes, pH value, deposition potential, and deposition time were carefully studied and optimized...
June 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28645680/collection-processing-and-freezing-of-equine-bone-marrow-cells
#6
Fernanda Z Bastos, Fernanda C M Barussi, Thasla F Santi, Bianca P Vieira, Alexandra C Senegaglia, Fernanda F Cruz, Pedro V Michelotto
There is no consensus on aspects of equine bone marrow collection and processing. The study aimed to describe the collection of large volumes of bone marrow from horses of advanced age, with emphasis on bone marrow mononuclear cells (BMMCs) recovery and viability after cryopreservation. Fourteen horses, aged 3-24 years, were divided into three experiments. E1 studied the feasibility of collecting 200 mL from the sternums of horses of advanced age; E2 examined the number of cells obtained from the first and last syringe of each puncture; and E3 investigated the influence of heparin concentration on the prevention of cell aggregation, and cell viability after freezing in liquid nitrogen...
June 20, 2017: Cryobiology
https://www.readbyqxmd.com/read/28643816/-budd-chiari-syndrome-and-ulcerative-colitis-in-an-adolescent
#7
Federico Marchetti, Martina Mainetti, Michela Giovannini, Cristina Morelli
In patients with inflammatory bowel disease (IBD) there is an increased incidence of thromboembolic events. We report a case of a female, age 14, with a 6 months history of diarrhea with occasional presence of red blood and with a very distended abdomen with evident ascites. The diagnosis was Budd-Chiari syndrome (BCS) in ulcerative colitis (UC). Therapy with subcutaneous low molecular weight heparin, methylprednisolone, mesalazine was started. Clinical and radiological features quickly improved. No thrombophilia abnormality nor other risk factor for thrombosis were detected...
May 2017: Recenti Progressi in Medicina
https://www.readbyqxmd.com/read/28643432/the-penetration-and-phenotype-modulation-of-smooth-muscle-cells-on-surface-heparin-modified-poly-%C3%AE%C2%B5-caprolactone-vascular-scaffold
#8
Jie Cao, Xue Geng, Juan Wen, Qingxuan Li, Lin Ye, Aiying Zhang, Zengguo Feng, Lianrui Guo, Yongquan Gu
The tubular porous poly(ε-caprolactone)(PCL) scaffold was fabricated by electrospinning. After then, the scaffold's surface was firstly eroded by hexyldiamine to endow amine group, and heparin was covalently grafted to the surface to get surface heparin modified scaffold(ShPCL scaffold). It was found that ShPCL scaffold can induce smooth muscle cells (SMCs) to penetrate the scaffold surface, while the SMCs can't penetrate the surface of PCL scaffold. Subsequently, the rabbit SMCs were seeded on the ShPCL scaffold and cultured for 14 days...
June 23, 2017: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/28641140/effect-of-c1-inh-on-ischemia-reperfusion-injury-in-a-porcine-limb-ex-vivo-perfusion-model
#9
Mai M Abdelhafez, Jane Shaw, Damian Sutter, Jonas Schnider, Yara Banz, Hansjörg Jenni, Esther Voegelin, Mihai A Constantinescu, Robert Rieben
Revascularization of an amputated limb within 4-6h is essential to avoid extensive ischemia/reperfusion (I/R) injury leading to vascular leakage, edema and tissue necrosis. I/R injury is a pathological inflammatory condition that occurs during reperfusion of an organ or tissue after prolonged ischemia. It is characterized by a complex crosstalk between endothelial cell activation and the activation of plasma cascades. Vasculoprotective pharmacological intervention to prevent I/R injury might be an option to prolong the time window between limb amputation and successful replantation...
June 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28640945/production-of-human-vitronectin-in-nicotiana-benthamiana-using-the-inpact-hyper-expression-platform
#10
Benjamin Dugdale, Maiko Kato, Pradeep Deo, Manuel Plan, Mark Harrison, Robyn Lloyd, Terry Walsh, Robert Harding, James Dale
Human vitronectin (hVN) is a glycoprotein that functions as a cell adhesion molecule and a regulator of coagulation in blood plasma and the extracellular matrix. In vitro, hVN is added to serum-free media in order to promote the adhesion of animal cells to tissue culture surfaces and the proliferation of undifferentiated stem cells. Here, we report the production of hVN in Nicotiana benthamiana using the inducible In Plant Activation (INPACT) hyper-expression platform. N. benthamiana plants were transformed with an INPACT expression cassette encoding hVN, and both the Tobacco yellow dwarf virus Rep/RepA activator and Tomato bushy stunt virus p19 gene under the transcriptional control of the ethanol-inducible AlcR:alcA gene switch...
June 22, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28640321/effects-of-direct-oral-anticoagulants-on-lupus-anticoagulant-assays-in-a-real-life-setting
#11
Aleksandra Antovic, Eva-Marie Norberg, Maria Berndtsson, Agnes Rasmuson, Rickard E Malmström, Mika Skeppholm, Jovan Antovic
Laboratory diagnosis of lupus anticoagulant (LA) is based on prolongation in at least one coagulation assay (diluted Russell's viper venom time - dRVVT or activated partial thromboplastin time - aPTT), which normalises after addition of phospholipids. Both assays may be influenced by anticoagulants and therefore LA should not be tested during warfarin or heparin treatment. It has been shown (primarily in vitro) that direct oral anticoagulants (DOACs - dabigatran [DAB], rivaroxaban [RIV] and apixaban [API]) may also influence LA testing...
June 22, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28639987/antithrombotic-strategies-in-the-catheterization-laboratory-for-patients-with-acute-coronary-syndromes-undergoing-percutaneous-coronary-interventions-insights-from-the-employed-antithrombotic-therapies-in-patients-with-acute-coronary-syndromes-hospitalized
#12
Leonardo De Luca, Giuseppe Musumeci, Sergio Leonardi, Lucio Gonzini, Claudio Cavallini, Paolo Calabrò, Ciro Mauro, Luisa Cacciavillani, Stefano Savonitto, Stefano De Servi
AIMS: In the last decades, several new therapies have emerged for the treatment of acute coronary syndromes (ACS). We sought to describe real-world patterns of use of antithrombotic treatments in the catheterization laboratory for ACS patients undergoing percutaneous coronary interventions (PCI). METHODS: EmploYEd antithrombotic therapies in patients with acute coronary Syndromes HOspitalized in iTalian cardiac care units was a nationwide, prospective registry aimed to evaluate antithrombotic strategies employed in ACS patients in Italy...
July 20, 2017: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/28639463/adverse-drug-reactions-and-cutaneous-manifestations-associated-with-anticoagulation
#13
Trang T Vu, Melinda Gooderham
Anticoagulants are amongst the most commonly prescribed medications worldwide. Although rare, localised and systemic drug reactions have been reported with anticoagulants that can lead to significant morbidity and mortality. Some of the first signs of drug reactions to anticoagulants are cutaneous changes that, when recognised early, can prevent significant complications. Dermatologists should be aware of these changes to make an early and accurate diagnosis. This is particularly important in instances of skin-induced necrosis caused by systemic toxicity to anticoagulants...
June 1, 2017: Journal of Cutaneous Medicine and Surgery
https://www.readbyqxmd.com/read/28639418/clinical-course-of-isolated-distal-deep-vein-thrombosis-in-patients-with-active-cancer-a-multicenter-cohort-study
#14
Francesco Dentali, Samuela Pegoraro, Stefano Barco, Matteo Nicola Dario di Minno, Daniela Mastroiacovo, Fulvio Pomero, Corrado Lodigiani, Federica Bagna, Michelangelo Sartori, Giovanni Barillari, Nicola Mumoli, Mariasanta Napolitano, Serena Maria Passamonti, Raffaella Benedetti, Walter Ageno, Marcello Di Nisio
BACKGROUND: Although isolated distal deep vein thrombosis (IDDVT) is frequently associated with cancer, no study has specifically evaluated the long-term clinical course of IDDVT in active cancer patients. AIM: To provide data on the rate of recurrent venous thromboembolism (VTE), major bleeding events, and death in IDDVT patients with active cancer. PATIENTS AND METHODS: Consecutive patients with active cancer and an objective IDDVT diagnosis (January 2011-September 2014) were included from our files...
June 21, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/28638161/argatroban-for-heparin-induced-thrombocytopenia-during-venovenous-extracorporeal-membrane-oxygenation-with-continuous-venovenous-hemofiltration
#15
Jonathan H Sin, Natasha D Lopez
Patients receiving extracorporeal membrane oxygenation (ECMO) are at risk of circuit thrombosis due to constant contact between blood and the extracorporeal components. Unfractionated heparin has traditionally been used in this setting as a systemic form of anticoagulation to prevent thrombosis of the circuit. However, if a patient develops heparin-induced thrombocytopenia (HIT), an alternative anticoagulant would be required while the patient is maintained on ECMO. Unfortunately, the pharmacokinetic changes induced by ECMO and critical illness may potentially affect optimal drug dosing...
June 2017: Journal of Extra-corporeal Technology
https://www.readbyqxmd.com/read/28638004/modification-of-the-hcmv-specific-ifn-%C3%AE-release-test-quantiferon-cmv-and-a-novel-proposal-for-its-application
#16
Takahiro Kobayashi, Jun-Ichi Sato, Kazufumi Ikuta, Ryoko Kanno, Kyoko Nishiyama, Tetsuo Koshizuka, Ken Ishioka, Tatsuo Suzutani
Human cytomegalovirus (HCMV) is universally distributed among humans without any adverse effects; however, it induces severe diseases in immunocompromised patients such as organ transplant recipients and AIDS patients. To manage these immunocompromised patients, an easy clinical examination for the monitoring of disease risk is required. In this study, we modified the interferon-γ (IFN-γ) release test (QuantiFERON(®)-CMV) using HCMV immediate early-1 (IE-1) or pp65 whole proteins, or UV-inactivated HCMV particles as an antigen...
June 22, 2017: Fukushima Journal of Medical Science
https://www.readbyqxmd.com/read/28637375/anticoagulant-therapy-for-recurrent-in-stent-thrombosis-following-carotid-artery-stenting-a-case-report
#17
Akinori Miyakoshi, Hiroki Toda, Makoto Hayase, Takeshi Kawauchi, Yuki Oichi, Etsuko Hattori
We report a case in which strict anticoagulant therapy management was useful for a recurrent in-stent thrombosis after carotid artery stenting (CAS). An 84-year-old man presented with cognitive decline that progressed rapidly over two months. Head magnetic resonance imaging showed an acute-stage infarct occurring frequently in the right cerebral hemisphere, and he underwent hospitalization and treatment. On neck magnetic resonance angiography (MRA), severe stenosis was found at the origin of the right internal carotid artery...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28635655/from-farm-to-pharma-an-overview-of-industrial-heparin-manufacturing-methods
#18
REVIEW
Jan-Ytzen van der Meer, Edwin Kellenbach, Leendert J van den Bos
The purification of heparin from offal is an old industrial process for which commercial recipes date back to 1922. Although chemical, chemoenzymatic, and biotechnological alternatives for this production method have been published in the academic literature, animal-tissue is still the sole source for commercial heparin production in industry. Heparin purification methods are closely guarded industrial secrets which are not available to the general (scientific) public. However by reviewing the academic and patent literature, we aim to provide a comprehensive overview of the general methods used in industry for the extraction of heparin from animal tissue...
June 21, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28635544/heparin-new-life-for-an-old-drug
#19
Carlos Raúl Aláez-Versón, Elena Lantero, Xavier Fernàndez-Busquets
Heparin is one of the oldest drugs, which nevertheless remains in widespread clinical use as an inhibitor of blood coagulation. The history of its identification a century ago unfolded amid one of the most fascinating scientific controversies turning around the distribution of credit for its discovery. The composition, purification and structure-function relationship of this naturally occurring glycosaminoglycan regarding its classical role as anticoagulant will be dealt with before proceeding to discuss its therapeutic potential in, among other, inflammatory and infectious disease, cancer treatment, cystic fibrosis and Alzheimer's disease...
June 21, 2017: Nanomedicine
https://www.readbyqxmd.com/read/28634441/roles-of-pannexin-1-channels-in-inflammatory-response-through-the-tlrs-nf-kappa-b-signaling-pathway-following-experimental-subarachnoid-hemorrhage-in-rats
#20
Ling-Yun Wu, Zhen-Nan Ye, Chen-Hui Zhou, Chun-Xi Wang, Guang-Bin Xie, Xiang-Sheng Zhang, Yong-Yue Gao, Zi-Huan Zhang, Meng-Liang Zhou, Zong Zhuang, Jing-Peng Liu, Chun-Hua Hang, Ji-Xin Shi
Background: Accumulating evidence suggests that neuroinflammation plays a critical role in early brain injury after subarachnoid hemorrhage (SAH). Pannexin-1 channels, as a member of gap junction proteins located on the plasma membrane, releases ATP, ions, second messengers, neurotransmitters, and molecules up to 1 kD into the extracellular space, when activated. Previous studies identified that the opening of Pannexin-1 channels is essential for cellular migration, apoptosis and especially inflammation, but its effects on inflammatory response in SAH model have not been explored yet...
2017: Frontiers in Molecular Neuroscience
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