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Haemostatic

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https://www.readbyqxmd.com/read/29341135/phenolic-fractions-from-nine-trifolium-species-modulate-the-coagulant-properties-of-blood-plasma-in-vitro-without-cytotoxicity-towards-blood-cells
#1
Joanna Kolodziejczyk-Czepas, Malgorzata Sieradzka, Barbara Moniuszko-Szajwaj, Pawel Nowak, Wiesław Oleszek, Anna Stochmal
OBJECTIVE: The study covers an evaluation of the influence of extracts (1-50 μg/ml), isolated from aerial parts of nine Trifolium L. species (i.e. T. alexandrinum, T. fragiferum, T. hybridum, T. incarnatum, T. pallidum, T. pratense, T. resupinatum var. majus, T. resupinatum var. resupinatum and T. scabrum) on haemostatic properties of blood plasma. METHODS: The clot formation and fibrinolysis assay (CFF), blood clotting times, the extrinsic and intrinsic coagulation pathway-dependent polymerization of plasma fibrin were measured...
January 17, 2018: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/29334511/evaluation-of-recombinant-factor-viia-tranexamic-acid-and-desmopressin-to-reduce-prasugrel-related-bleeding-a-randomised-placebo-controlled-study-in-a-rabbit-model
#2
Fanny Bonhomme, Thomas Lecompte, Charles M Samama, Anne Godier, Pierre Fontana
BACKGROUND: Prasugrel is a thienopyridine that inhibits platelet aggregation more rapidly and effectively than clopidogrel, with an increased bleeding risk. OBJECTIVE: The current study aimed to evaluate the efficacy of three nonspecific haemostatic drugs - recombinant activated factor VII (rFVIIa), tranexamic acid and desmopressin (DDAVP) - to limit blood loss after administration of prasugrel in a rabbit model of bleeding while also evaluating any prothrombotic effects...
January 13, 2018: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/29334308/neuromuscular-degenerative-effects-of-ankaferd-blood-stopper%C3%A2-in-mouse-sciatic-nerve-model
#3
Ramazan Üstün, Elif Kaval Oğuz, Çağrı Delilbaşı, Ayşe Şeker, Filiz Taşpınar, Mehmet Reşit Öncü, Ahmet Regaip Oğuz
Purpose Ankaferd Blood Stopper® (ABS), a licenced medicinal herbal extract, is commonly used as an effective topical haemostatic agent. This study is designed to investigate whether topical ABS application may cause peripheral nerve degeneration and neuromuscular dysfunction in a mouse sciatic nerve model. Methods Twenty mice were randomly divided into two groups; an ABS treated experimental group and a saline-treated control group. Left sciatic nerves were treated with 0.3 ml of ABS in the experimental group and 0...
January 15, 2018: Somatosensory & Motor Research
https://www.readbyqxmd.com/read/29334174/trichloroacetic-acid-80-as-a-chemical-debridement-method-for-chronic-venous-leg-ulcers-a-pilot-study
#4
Rita R Pinheiro, Bruno Duarte, Joana Cabete
Debridement is essential for the optimal care of venous leg ulcers. Several debridement methods with different limitations may be deployed. Trichloroacetic acid (TCA) is used for several dermatological purposes. Its application as a chemical debridement method for leg ulcers has never been explored. We designed a prospective study to determine the role of 80% TCA solution as a chemical debridement method for leg ulcers, regarding efficacy and procedure-associated pain. Chronic venous leg ulcers were treated with 3 cycles of 80% TCA solution or curettage over 1 week...
January 15, 2018: International Wound Journal
https://www.readbyqxmd.com/read/29330124/manipulating-the-epigenome-for-the-treatment-of-disorders-with-thrombotic-complications
#5
REVIEW
Faith A A Kwa, Denise E Jackson
The haemostatic system is tightly regulated to maintain homeostasis to avoid unwanted bleeding or thrombotic complications. Recent research has highlighted the importance of epigenetic changes, such as DNA methylation, histone modifications, and miRNA-based mechanisms, that alter gene expression. This can give rise to dysregulated haemostatic or vascular expressed molecules contributing to the development of thrombotic complications. Targeting these epigenetic changes could provide a new avenue for the treatment of pathological blood clots...
January 9, 2018: Drug Discovery Today
https://www.readbyqxmd.com/read/29324486/fibrinolysis-and-antifibrinolytic-treatment-in-the-trauma-patient
#6
Lewis S Gall, Ross A Davenport
PURPOSE OF REVIEW: The role of antifibrinolytics in trauma haemorrhage and early coagulopathy remains controversial with respect to patient selection, dosage, timing of treatment, and risk of thrombotic complications. This review presents our current understanding of the mechanisms of fibrinolysis in trauma, diagnostic evaluation, and the evidence base for treatment. RECENT FINDINGS: Excessive fibrinolysis following severe injury is a major component of acute traumatic coagulopathy and contributes to the high mortality from trauma haemorrhage...
January 10, 2018: Current Opinion in Anaesthesiology
https://www.readbyqxmd.com/read/29314439/low-incidence-of-factor-viii-inhibitors-in-previously-untreated-patients-with-severe-haemophilia-a-treated-with-octanate%C3%A2-final-report-from-a-prospective-study
#7
A Klukowska, V Komrska, V Vdovin, A Pavlova, M Jansen, S Lowndes, L Belyanskaya, O Walter, P Laguna
INTRODUCTION: Octanate® is a human, plasma-derived, von Willebrand factor-stabilized coagulation factor VIII (FVIII) concentrate with demonstrated haemostatic efficacy in previously treated patients with haemophilia A. AIM: This prospective, open-label study aimed to assess the immunogenicity of octanate® in previously untreated patients (PUPs). METHODS: The study monitored development of FVIII inhibitors in 51 PUPs. Tolerability, viral safety, FVIII recovery and efficacy of octanate® for the prevention and treatment of bleeds and in surgical procedures were also assessed...
January 3, 2018: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29304530/alteration-of-von-willebrand-factor-after-transcatheter-aortic-valve-replacement-in-the-absence-of-paravalvular-regurgitation
#8
Felix Pawlitschek, Cornelius Keyl, Barbara Zieger, Ulrich Budde, Friedhelm Beyersdorf, Franz-Josef Neumann, Christian Stratz, Thomas G Nührenberg, Dietmar Trenk
Moderate or severe paravalvular regurgitation after transcatheter aortic valve implantation (TAVI) is frequently associated with a loss of high-molecular-weight multimers of von Willebrand factor (VWF) and a reduced VWF collagen-binding capacity. It is unclear whether this phenomenon can also be observed in patients with mild paravalvular regurgitation, and whether there are differences between patients undergoing conventional aortic valve replacement (AVR) or TAVI. We analysed the multimeric structure of VWF and the ratio of VWF collagen-binding capacity to VWF antigen pre- and postoperatively in 12 patients scheduled for AVR and in 31 patients scheduled for TAVI...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29304525/low-self-rated-health-is-related-to-blood-hypercoagulability-in-patients-admitted-with-acute-myocardial-infarction
#9
Roland von Känel, Rebecca E Meister-Langraf, Jean-Paul Schmid, Jürgen Barth, Hansjörg Znoj, Ulrich Schnyder, Mary Princip
Self-rated health (SRH) is independently associated with all-cause mortality and adverse cardiovascular outcomes in individuals with and without cardiovascular disease. We examined whether SRH relates to haemostatic factors of a hypercoagulable state with prognostic impact in patients admitted with acute myocardial infarction (MI). We assessed 190 patients (median age: 59 years; all Caucasian; 83% men) within 48 hours of an acute coronary intervention in terms of demographic factors, medical and psychiatric comorbidity, health behaviours, cardiac-related variables and psychosocial characteristics...
January 2018: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/29303769/reference-intervals-for-biochemical-haemostatic-and-haematological-parameters-in-healthy-chinese-women-during-early-and-late-pregnancy
#10
Yi Jin, Jie Lu, Hong Jin, Chunrong Fei, Xinyou Xie, Jun Zhang
BACKGROUND: Variations in maternal blood parameters, which are mostly induced by the physiological changes that occur during pregnancy, have been reported in different gestational periods. The use of the established reference intervals for healthy adult females leads to the misclassification of healthy pregnant women as abnormal. Our aim was to establish appropriate reference intervals for biochemical, haematological and haemostatic parameters in the first and third trimesters of pregnancy...
January 5, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29298690/ambient-air-pollution-and-thrombosis
#11
REVIEW
Sarah Robertson, Mark R Miller
Air pollution is a growing public health concern of global significance. Acute and chronic exposure is known to impair cardiovascular function, exacerbate disease and increase cardiovascular mortality. Several plausible biological mechanisms have been proposed for these associations, however, at present, the pathways are incomplete. A seminal review by the American Heart Association (2010) concluded that the thrombotic effects of particulate air pollution likely contributed to their effects on cardiovascular mortality and morbidity...
January 3, 2018: Particle and Fibre Toxicology
https://www.readbyqxmd.com/read/29295657/comparing-coagulation-activity-of-selaginella-tamariscina-before-and-after-stir-frying-process-and-determining-the-possible-active-constituents-based-on-compositional-variation
#12
Qian Zhang, Ya-Li Wang, Die Gao, Liang Cai, Yi-Yao Yang, Yuan-Jia Hu, Feng-Qing Yang, Hua Chen, Zhi-Ning Xia
CONTEXT: Selaginella tamariscina (P. Beauv.) Spring (Selaginellaceae) (ST) has been widely used in China as a medicine for improving blood circulation. However, its processed product, S. tamariscina carbonisatus (STC), possesses opposite haemostatic activity. OBJECTIVE: To comprehensively evaluate the activity of ST and STC on physiological coagulation system of rats, and seek potential active substances accounting for the activity transformation of ST during processing...
December 2018: Pharmaceutical Biology
https://www.readbyqxmd.com/read/29289486/posterior-reversible-encephalopathy-syndrome-following-blood-transfusion-in-a-patient-with-factor-x-deficiency-is-it-an-unusual-systemic-manifestation-of-an-adverse-transfusion-reaction
#13
Anupam Verma, Hemlata, Priti Elhence, Shubha R Phadke, Zafar Neyaz
Adverse neurological transfusion reactions including posterior reversible encephalopathy syndrome (PRES) following blood transfusion are rare. Our case an 18-year-female with known Factor X deficiency with menorrhagia developed severe hypertension, followed by generalised tonic clonic convulsions apparently after blood component transfusion. She had earlier received 4 units of red blood cells (RBC) for anaemia and 10 units of fresh frozen plasma (FFP) for menorrhagia (with prolonged PT and APTT) within short span of time at another hospital...
December 6, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29288089/exploring-the-molecular-complexity-of-triatoma-dimidiata-sialome
#14
Paula Beatriz Santiago, Carla Nunes de Araújo, Sébastien Charneau, Izabela Marques Dourado Bastos, Teresa Cristina F Assumpção, Rayner Myr Lauterjung Queiroz, Yanna Reis Praça, Thuany de Moura Cordeiro, Carlos Henrique Saraiva Garcia, Ionizete Garcia da Silva, Tainá Raiol, Flávia Nader Motta, João Victor de Araújo Oliveira, Marcelo Valle de Sousa, José Marcos C Ribeiro, Jaime Martins de Santana
Triatoma dimidiata, a Chagas disease vector widely distributed along Central America, has great capability for domestic adaptation as the majority of specimens caught inside human dwellings or in peridomestic areas fed human blood. Exploring the salivary compounds that overcome host haemostatic and immune responses is of great scientific interest. Here, we provide a deeper insight into its salivary gland molecules. We used high-throughput RNA sequencing to examine in depth the T. dimidiata salivary gland transcriptome...
December 26, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/29282815/prevalence-of-and-risk-factors-for-cerebral-microbleeds-among-adult-patients-with-haemophilia-a-or-b
#15
H Husseinzadeh, T Chiasakul, P A Gimotty, B Pukenas, R Wolf, M Kelty, E Chiang, P F Fogarty, A Cuker
INTRODUCTION: Cerebral microbleeds (CMBs) represent clinically silent haemorrhagic events. Cerebral microbleeds (CMBs) portend negative neurovascular and cognitive outcomes in the general population and are associated with cognitive impairment in persons with haemophilia (PWH). Prevalence, patterns, and risk factors for CMBs in PWH have not been directly compared to persons without coagulopathy. AIM: To examine prevalence, patterns, and risk factors for CMBs in PWH vs normal controls...
December 28, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/29280695/intranasal-packs-and-haemostatic-agents-for-the-management-of-adult-epistaxis-systematic-review
#16
I Z Iqbal, G H Jones, N Dawe, C Mamais, M E Smith, R J Williams, I Kuhn, S Carrie
BACKGROUND: The mainstay of management of epistaxis refractory to first aid and cautery is intranasal packing. This review aimed to identify evidence surrounding nasal pack use. METHOD: A systematic review of the literature was performed using standardised methodology. RESULTS: Twenty-seven eligible articles were identified relating to non-dissolvable packs and nine to dissolvable packs. Nasal packing appears to be more effective when applied by trained professionals...
December 2017: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29274254/french-lyophilized-plasma-versus-fresh-frozen-plasma%C3%A2-for-the-initial-management-of-trauma-induced-coagulopathy-a-randomized-open-label-trial
#17
Delphine Garrigue, Anne Godier, Alexandre Glacet, Julien Labreuche, Eric Kipnis, Camille Paris, Alain Duhamel, Eric Resch, Anne Bauters, François Machuron, Pascale Renom, Patrick Goldstein, Benoit Tavernier, Anne Sailliol, Sophie Susen
BACKGROUND: Guidelines recommend to begin haemostatic resuscitation immediately in trauma patients. We aimed to investigate if French Lyophilised Plasma (FLyP) was more effective than Fresh Frozen Plasma (FFP) for the initial management of the trauma-induced-coagulopathy. METHODS: In an open-label, phase 3, randomized trial (NCT02750150), we enrolled adult trauma patients requiring an emergency pack of 4 plasma units within 6 hours of injury. We randomly assigned patients to receive 4-FLyP units or 4-FFP units...
December 23, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29244748/design-of-new-generation-usable-forms-of-topical-haemostatic-agents-containing-chitosan
#18
Dorota Zielińska, Marcin H Struszczyk, Longina Madej-Kiełbik, Edyta Chmal-Fudali, Magdalena Kucharska, Maria Wiśniewska-Wrona, Kinga Brzoza-Malczewska
Designing usable forms of topical haemostatic agents is the most important activity during the design process, resulting in strengthened functional properties of the final medical devices. This study aimed to propose indications for a research programme based on risk management supporting the development of two usable forms of a topical haemostatic agent: chitosan/alginate lyophilized foam and chitosan/alginate impregnated gauze. Both of the usable forms of the topical haemostatic agent, being the main part of the modified combat gauze, were fabricated using the chitosan/alginate complex...
December 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29241907/a-systematic-review-of-massive-transfusion-protocol-in-obstetrics
#19
REVIEW
Hiroaki Tanaka, Shigetaka Matsunaga, Tomoyuki Yamashita, Toshiyuki Okutomi, Atsushi Sakurai, Akihiko Sekizawa, Junichi Hasegawa, Katsuo Terui, Yasutaka Miyake, Jun Murotsuki, Tomoaki Ikeda
Post-partum obstetric haemorrhage is a leading cause of mortality among Japanese women, generally treated with haemostatic measures followed by supplementary transfusion. Commonly used in the setting of severe trauma, massive transfusion protocols (MTPs), preparations of red blood cell concentrate (RBC) and fresh frozen plasma (FFP) with additional supplements, have proved effective in decreasing patient mortality following major obstetric bleeding events. Although promising, the optimal configuration of RBC and FFP utilized for obstetric bleeding needs to be verified...
December 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/29235243/a-waiting-time-of-7%C3%A2-min-is-sufficient-to-reduce-bleeding-in-oculoplastic-surgery-following-the-administration-of-epinephrine-together-with-local-anaesthesia
#20
Jenny Hult, Rafi Sheikh, Cu Dinh Nguyen, Kajsa Tenland, Ulf Dahlstrand, Malin Malmsjö
OBJECTIVE: The time taken to reach maximal haemostatic effect following local anaesthesia with epinephrine is generally believed to be <10 min. This is based on clinical experience and indirect measurements of perfusion using methods such as laser Doppler flowmetry and oxygen spectroscopy. However, the only study in which bleeding has been measured quantitatively in an intra-operative setting in humans showed that the full haemostatic effect was not achieved until 30 min after anaesthesia...
December 13, 2017: Acta Ophthalmologica
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