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https://www.readbyqxmd.com/read/28346967/anticoagulation-therapy-in-children
#1
Vlad Calin Radulescu
Venous thromboembolism (VTE) is very uncommon in children and adolescents compared with older adults, though its incidence has significantly increased over the past two decades. Given the rarity of the condition, the data on pediatric VTE lag behind the adult experience and consequently the management of VTE in children is, in large part, modeled on the adult strategies. This approach has certain limitations, given that young children have developmental particularities of the hemostatic system and differences in the pharmacokinetics and pharmacodynamics of various anticoagulant agents...
March 27, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28346965/point-of-care-coagulation-tests-monitoring-of-direct-oral-anticoagulants-and-their-reversal-therapy-state-of-the-art
#2
Giacomo E Iapichino, Paolo Bianchi, Marco Ranucci, Ekaterina Baryshnikova
Direct oral anticoagulants (DOACs) exert similar anticoagulant effects to vitamin K antagonists and are increasingly used worldwide. Nevertheless, an evidence-based approach to patients receiving DOACs when any unplanned urgent surgery or bleeding (either spontaneous or traumatic) occurs is still missing. In this review, we investigate the role of point-of-care coagulation tests when other, more specific tests are not available. Indeed, thromboelastography and activated clotting time can detect dabigatran-induced coagulopathy, while their accuracy is limited for apixaban and rivaroxaban, mostly in cases of low drug plasma concentrations...
March 27, 2017: Seminars in Thrombosis and Hemostasis
https://www.readbyqxmd.com/read/28339551/anticoagulant-and-antiplatelet-management-for-spinal-procedures-a-prospective-descriptive-study-and-interpretation-of-guidelines
#3
Bradly S Goodman, L McLean House, Sridhar Vallabhaneni, Srinivas Mallempati, Matthew R Willey, Matthew Thomas Smith
Setting.:  Epidural hematoma rarely complicates interventional spine procedures. While anticoagulant and antiplatelet drugs increase bleeding risk, cessation may precipitate serious thromboembolic events. The Spine Intervention Society (SIS) and American Society of Regional Anesthesia and Pain Medicine (ASRA) put forth guidelines that dissent with regard to management of hemostatically active agents during commonly performed spinal injections. Objective.:  To validate an antiplatelet/anticoagulant management table based on modifications of the SIS 2013 and ASRA 2015 guidelines...
October 6, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28325889/hypofibrinogenemia-caused-by-hemocoagulase-after-colon-polyps-excision
#4
Hai-Bo Zhou
BACKGROUND In patients with large colon polyps, late-onset bleeding may be more likely to occur because of the larger cutting surface. In these patients, hemostatic agents may be applied to prevent the late-onset bleeding. A total of 7 patients developed hypofibrinogenemia caused by hemocoagulase following excision of colon polyps in our center from November to December 2015. CASE REPORT Seven patients underwent excision of colon polyps in our center from November to December 2015. The cutting face was large in these patients after surgery; therefore, hemocoagulase was used to prevent potential late-onset bleeding...
March 22, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28314136/platelet-microparticle-inspired-clot-responsive-nanomedicine-for-targeted-fibrinolysis
#5
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/28297572/safety-and-efficacy-of-megakaryocytes-induced-from-hematopoietic-stem-cells-in-murine-and-nonhuman-primate-models
#6
Xin Guan, Meng Qin, Yu Zhang, Yanan Wang, Bin Shen, Zhihua Ren, Xinxin Ding, Wei Dai, Yongping Jiang
Because of a lack of platelet supply and a U.S. Food and Drug Administration-approved platelet growth factor, megakaryocytes have emerged as an effective substitute for alleviating thrombocytopenia. Here, we report the development of an efficient two-stage culture system that is free of stroma, animal components, and genetic manipulations for the production of functional megakaryocytes from hematopoietic stem cells. Safety and functional studies were performed in murine and nonhuman primate models. One human cryopreserved cord blood CD34(+) cell could be induced ex vivo to produce up to 1...
March 2017: Stem Cells Translational Medicine
https://www.readbyqxmd.com/read/28296287/bio-inspired-nanomedicine-strategies-for-artificial-blood-components
#7
REVIEW
Anirban Sen Gupta
Blood is a fluid connective tissue where living cells are suspended in noncellular liquid matrix. The cellular components of blood render gas exchange (RBCs), immune surveillance (WBCs) and hemostatic responses (platelets), and the noncellular components (salts, proteins, etc.) provide nutrition to various tissues in the body. Dysfunction and deficiencies in these blood components can lead to significant tissue morbidity and mortality. Consequently, transfusion of whole blood or its components is a clinical mainstay in the management of trauma, surgery, myelosuppression, and congenital blood disorders...
March 15, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28293423/growth-inhibitory-activity-of-ankaferd-hemostat-on-primary-melanoma-cells-and-cell-lines
#8
Seyhan Turk, Umit Yavuz Malkan, Mehdi Ghasemi, Helin Hocaoglu, Duygu Mutlu, Gursel Gunes, Salih Aksu, Ibrahim Celalettin Haznedaroglu
OBJECTIVE: Ankaferd hemostat is the first topical hemostatic agent about the red blood cell-fibrinogen relations tested in the clinical trials. Ankaferd hemostat consists of standardized plant extracts including Alpinia officinarum, Glycyrrhiza glabra, Thymus vulgaris, Urtica dioica, and Vitis vinifera. The aim of this study was to determine the effect of Ankaferd hemostat on viability of melanoma cell lines. METHODS: Dissimilar melanoma cell lines and primary cells were used in this study...
2017: SAGE Open Medicine
https://www.readbyqxmd.com/read/28286423/oligonucleotides-targeting-coagulation-factor-mrnas-use-in-thrombosis-and-hemophilia-research-and-therapy
#9
REVIEW
Marco Heestermans, Bart J M van Vlijmen
Small interfering (si) RNAs and antisense oligonucleotides (ASOs; here for simplicity reasons, both referred to as oligonucleotides) are small synthetic RNA or DNA molecules with a sequence complementary to a (pre)mRNA. Although the basic mechanisms of action between siRNAs and ASO are distinct, a sequence-specific interaction of the both oligonucleotides with the target (pre)mRNA alters the target's fate, which includes highly effective sequence-specific blockade of translation and consequently depletion of the corresponding protein...
2017: Thrombosis Journal
https://www.readbyqxmd.com/read/28258978/use-of-gelatin-sponge-affects-postoperative-morbidity-in-cesarean-section-patients
#10
Alev Özer, Bülent Köstü
BACKGROUND This study aimed to determine the effects of use of a local hemostatic gelatin sponge (GS) on postoperative morbidity in patients undergoing cesarean section (CS). MATERIAL AND METHODS The records of 318 patients who underwent CS surgery were retrospectively evaluated. Group 1 consisted of 59 patients with gelatin sponge (GS) applied, and Group 2 consisted of 259 patients with no GS applied. The groups were compared for time to the first flatus, nausea and vomiting, requirement for anti-emetic drugs, development of postoperative ileus, and the length of hospitalization...
March 4, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28249548/traditional-uses-chemical-constituents-and-biological-activities-of-plants-from-the-genus-sanguisorba-l
#11
Zefeng Zhao, Xirui He, Qiang Zhang, Xiaoyang Wei, Linhong Huang, Jia Cheng Fang, Xiaoxiao Wang, Meimei Zhao, Yajun Bai, Xiaohui Zheng
Plants from the genus Sanguisorba have been treated as medicinal ingredients for over 2000 years. This paper reviews advances in the botanical, phytochemical and pharmacological studies of the genus. To date, more than 120 chemical constituents have been isolated and identified from these plants, especially from S. officinalis and S. minor. Among these compounds, triterpenoids, phenols and flavonoids are the primary biologically active constituents. Triterpenoids can be used as quality control markers to determine the quality of medicinal materials and their preparations...
March 2, 2017: American Journal of Chinese Medicine
https://www.readbyqxmd.com/read/28207269/a-biocompatible-injectable-hydrogel-with-potent-wound-healing-and-antibacterial-properties
#12
Jiaul Hoque, Relekar G Prakash, Krishnamoorthy Paramanandham, Bibek R Shome, Jayanta Haldar
Two component injectable hydrogels that cross-link in-situ have been used as non-invasive wound-filling devices, i.e., sealants. These materials carry a variety of functions at the wound sites such as seal leaks, cease unwanted bleeding, bind tissues together, and assist in wound healing process. However, commonly used sealants typically lack antibacterial properties. Since bacterial infection at the wound site is very common, bioadhesive materials with intrinsic antibacterial properties are urgently required...
February 16, 2017: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/28203003/-bleeding-control-of-periodontal-mechanical-therapy-for-patients-taking-aspirin
#13
F Ding, Y L Lyu, W Xuan, D Y Liu, X Q Duan, X Han
OBJECTIVE: To investigate the feasibility of periodontal mechanical therapy for chronic periodontitis and coronary heart disease patients with low dose of aspirin. METHODS: Sixty nine chronic periodontitis patients with coronary heart disease were randomly selected as the experimental group (medication group, group A), the control group (withdrawal group, group B) including 20 chronic periodontitis patients with coronary artery disease, stopping the drug for one week and another control group with 50 chronic periodontitis patients (group C)...
February 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28190562/a-combined-approach-to-early-detect-in-vitro-drug-induced-hemostatic-changes-in-preclinical-safety
#14
Myriam Defontis, Serge Côté, David Ledieu
Early detection of drug-induced alterations of hemostasis is challenging. Drugs can affect different components of the Virchow's triad and measurement of plasmatic coagulation times lacks sensitivity. New techniques for a more global assessment of the hemostasis are now available: the impedance platelet aggregometry, the thromboelastography and the thrombin generation measurement. The aim of this study was to evaluate three techniques (i.e.: Multiplate(®), TEG(®) and CAT) for the in vitro detection of the effect of a drug known to induce hemostatic alterations in a preclinical safety environment...
February 9, 2017: Experimental and Toxicologic Pathology: Official Journal of the Gesellschaft Für Toxikologische Pathologie
https://www.readbyqxmd.com/read/28131944/a-novel-injectable-tissue-adhesive-based-on-oxidized-dextran-and-chitosan
#15
Biji Balakrishnan, Dawlee Soman, Umashanker Payanam, Alexandre Laurent, Denis Labarre, Athipettah Jayakrishnan
A surgical adhesive that can be used in different surgical situations with or without sutures is a surgeons' dream and yet none has been able to fulfill many such demanding requirements. It was therefore a major challenge to develop an adhesive biomaterial that stops bleeding and bond tissues well, which at the same time is non-toxic, biocompatible and yet biodegradable, economically viable and appealing to the surgeon in terms of the simplicity of application in complex surgical situations. With this aim, we developed an in situ setting adhesive based on biopolymers such as chitosan and dextran...
January 25, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28068274/dental-care-in-patients-with-antiphospholipid-syndrome-two-case-reports
#16
Karine Cestaro Mesquita, Carolina Rodrigues Teófilo, João Paulo Veloso Perdigão, Fabrício Bitu Sousa, Ana Paula Negreiros Nunes Alves, Wagner Araújo de Negreiros, Mário Rogério Lima Mota
Antiphospholipid syndrome (APS) is a prothrombotic autoimmune disease that may be classified as primary or secondary. Treatment consists of oral anticoagulant, antiplatelet, and/or immunosuppressant drugs. This report describes the dental treatment of 2 women with APS and multiple dental concerns, including periodontal disease, caries, and missing teeth. The invasive dental procedures were performed in an outpatient setting with hematologic monitoring and use of local hemostatic measures. Neither interruption of anticoagulant medications nor administration of blood products was necessary...
January 2017: General Dentistry
https://www.readbyqxmd.com/read/28049890/nurturing-pharmacists-who-contribute-to-clinical-practice-through-galenical-pharmaceutical-studies
#17
Masato Shigeyama, Maho Taguchi, Hiromitsu Yamamoto
 In clinical environments, difficulty in the uniform preparation of Mohs paste has been noted, due to variations in its physical properties, and despite preparations being based on the same prescriptions. Therefore, studies have been conducted to clarify the physicochemical phenomena influencing such variations, and then to develop a prescription design that will improve the usability of this product through the use of additives with sufficient safety, thereby addressing the above-mentioned demerit. An improved form of Mohs paste, not containing the starch that is responsible for the variations in physical properties, was developed in consideration of appropriate bases, and its pharmacological mechanisms were examined, with a focus on its hemostatic effects...
2017: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/28028990/acquired-von-willebrand-syndrome
#18
REVIEW
Andrzej Mital
Acquired von Willebrand syndrome is a rare hemorrhagic diathesis, with clinical symptoms similar to those associated with the inherited form von Willebrand disease. This syndrome is characterized by a lack of previous bleeding symptoms, negative familial history, and occurrence in a relatively older age. Most commonly, acquired von Willebrand syndrome develops in the course of other conditions, such as lymphoproliferative, myeloproliferative, cardiovascular and autoimmune disorders; additionally, it can be associated with some non-hematological malignancies and use of certain prescription drugs...
November 2016: Advances in Clinical and Experimental Medicine: Official Organ Wroclaw Medical University
https://www.readbyqxmd.com/read/28017155/nanofibers-new-insights-for-drug-delivery-and-tissue-engineering
#19
Mohammad Karim Haidar, Hakan Eroğlu
Nanofibers became one of the major research areas for drug delivery and tissue engineering applications in the last decade. Depending on the simplicity of the preparation method and high drug loading capacity, nanofibers have many advantages for therapeutic perspectives. In addition, combined systems such as embedding nanoparticles into the nanofiber structures provide a second option for delivery of dual active ingredients in the same formulation. The release rate of the active ingredients can also be modified easily by the formulation parameters depending on the desired release time for the treatment...
December 21, 2016: Current Topics in Medicinal Chemistry
https://www.readbyqxmd.com/read/27988375/reciprocal-links-between-venous-thromboembolism-coagulation-factors-and-ovarian-cancer-progression
#20
REVIEW
Nathalie Swier, Henri H Versteeg
Ovarian cancer is the most lethal gynecological malignancy, which is due to late presentation. Treating advanced stage ovarian cancer is difficult, and tumor recurrence and chemoresistance frequently occur. In addition, early detection remains a major challenge as there are no early warning signs and no appropriate biomarkers. To reduce mortality rates of ovarian cancer patients, novel drug targets and biomarkers are needed. We postulate that hemostatic keyplayers are of importance when combatting ovarian cancer...
February 2017: Thrombosis Research
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