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Coagulation, hemostasis

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https://www.readbyqxmd.com/read/29159591/evaluation-of-the-associations-between-endothelial-dysfunction-inflammation-and-coagulation-in-crimean-congo-hemorrhagic-fever-patients
#1
Halef Okan Doğan, Seyit Ali Büyüktuna, Sercan Kapancik, Sevtap Bakir
Crimean-Congo hemorrhagic fever (CCHF) is a tick-borne zoonotic viral disease. The aim of this study was to evaluate the association between inflammation, coagulation and endothelial dysfunction in CCHF. The study population consisted of 40 patients and 50 healthy controls. Alanine aminotransferase (ALT), aspartate aminotransferase (AST), endocan, high sensitive C-reactive protein (hsCRP), international normalized ratio (INR), prothrombin time (PT), activated partial thromboplastin time (aPTT) and platelets values were determined in blood samples...
November 20, 2017: Archives of Virology
https://www.readbyqxmd.com/read/29157918/purpura-fulminans-mechanism-and-management-of-dysregulated-hemostasis
#2
REVIEW
Meaghan E Colling, Pavan K Bendapudi
Purpura fulminans (PF) is a highly thrombotic subtype of disseminated intravascular coagulation that can accompany severe bacterial, and more rarely, viral infections. PF is associated with an extremely high mortality rate, and patients often die of overwhelming multisystemic thrombosis rather than septic shock. Survivors typically experience amputation of involved extremities and significant scarring in affected areas. Despite the devastating clinical course associated with this hemostatic complication of infection, the mechanism of PF remains poorly understood...
October 16, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/29152610/mutations-in-coagulation-factor-viii-are-associated-with-more-favorable-outcome-in-patients-with-cutaneous-melanoma
#3
Zheng Ping, Abha Soni, Lance A Williams, Huy P Pham, Malay K Basu, X Long Zheng
Coagulation factor VIII (FVIII), von Willebrand factor (VWF), and ADAMTS13 play an important role in regulation of normal hemostasis. However, little is known about their roles in patients with malignancy, particularly with cutaneous melanoma. Whole genome sequencing data are available for 25,719 cases in 126 cancer genomic studies for analysis. All sequencing data and corresponding pathology findings were obtained from The Cancer Genome Atlas. The cBioportal bioinformatics tools were used for the data analysis...
July 2017: TH Open
https://www.readbyqxmd.com/read/29140832/platelet-function-changes-in-a-time-dependent-manner-following-traumatic-brain-injury-in-a-murine-model
#4
Grace E Martin, Brent Xia, Young Kim, Mark D Johnson, Rosalie Veile, Lou Ann Friend, Amy T Makley, Charles C Caldwell, Michael D Goodman
Traumatic brain injury (TBI) results in systemic changes in coagulation and inflammation that contribute to post-traumatic morbidity and mortality. The potential interaction of platelets and pro-inflammatory cytokines in the modulation of coagulation, microthrombosis, and venous thromboembolic events after moderate TBI (TBI) has not been determined. Using a murine model, we hypothesized 1) that the degree of platelet-induced coagulation varies depending on the platelet aggregation agonist 2) platelet-induced coagulation changes in a time-dependent manner following TBI, and 3) changes in platelet-induced coagulation are mirrored by changes in the levels of circulating pro-inflammatory cytokines...
November 14, 2017: Shock
https://www.readbyqxmd.com/read/29132583/the-evolving-science-of-trauma-resuscitation
#5
REVIEW
Tim Harris, Ross Davenport, Matthew Mak, Karim Brohi
This review summarizes the evolution of trauma resuscitation from a one-size-fits-all approach to one tailored to patient physiology. The most dramatic change is in the management of actively bleeding patients, with a balanced blood product-based resuscitation approach (avoiding crystalloids) and surgery focused on hemorrhage control, not definitive care. When hemostasis has been achieved, definitive resuscitation to restore organ perfusion is initiated. This approach is associated with decreased mortality, reduced duration of stay, improved coagulation profile, and reduced crystalloid/vasopressor use...
February 2018: Emergency Medicine Clinics of North America
https://www.readbyqxmd.com/read/29126301/coagulation-testing-in-the-core-laboratory
#6
William E Winter, Sherri D Flax, Neil S Harris
Primary hemostasis begins with endothelial injury. VWF, produced by endothelial cells, binds to platelets and links them to subendothelial collagen. Platelet-derived ADP and thromboxane activate non-adhered platelets via their GPIIb/IIIa receptors, allowing these platelets to participate in platelet aggregation. Secondary hemostasis is initiated with the binding of factor VII to extravascular tissue factor (TF). Factors II, VII, IX and X are vitamin K-dependent factors. The role of vitamin K is to assist in the addition of gamma carboxylate groups to glutamic acids in the "GLA" domains of these factors...
November 8, 2017: Laboratory Medicine
https://www.readbyqxmd.com/read/29115584/apolipoprotein-c-iii-in-the-high-density-lipoprotein-proteome-of-cerebral-lacunar-infarction-patients-impairs-its-anti-inflammatory-function
#7
Pu Lv, Mingming Zhao, Yuanyuan Liu, Haiqiang Jin, Wei Cui, Chenghe Fan, Yuming Teng, Lemin Zheng, Yining Huang
High-density lipoprotein (HDL) proteomic study has identified substantial changes associated with various disease states. In the current study, the HDL proteomes in patients with cerebral lacunar infarction (LACI) and control subjects were investigated. A total of 12 LACI patients without evident large vessel occlusions and 12 controls were enrolled in the study. The HDL fraction from each sample was isolated from the plasma by ultracentrifugation. The protemics of the HDL were investigated using nano liquid chromatography coupled to tandem mass spectrometry...
October 27, 2017: International Journal of Molecular Medicine
https://www.readbyqxmd.com/read/29111117/identification-of-b-cell-recognized-linear-epitopes-in-a-snake-venom-serine-proteinase-from-the-central-american-bushmaster-lachesis-stenophrys
#8
M Madrigal, A Alape-Girón, E Barboza-Arguedas, W Aguilar-Ulloa, M Flores-Díaz
Snake venom serine proteinases are toxins that perturb hemostasis acting on proteins from the blood coagulation cascade, the fibrinolytic or the kallikrein-kinin system. Despite the relevance of these enzymes in envenomations by viper bites, the characterization of the antibody response to these toxins at the molecular level has not been previously addressed. In this work surface-located B cell recognized linear epitopes from a Lachesis stenophrys venom serine proteinase (UniProt accession number Q072L7) were predicted using an artificial neuronal network at the ABCpred server, the corresponding peptides were synthesized and their immunoreactivity was analyzed against a panel of experimental and therapeutic antivenoms...
October 27, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/29109275/engineering-of-a-membrane-triggered-activity-switch-in-coagulation-factor-viia
#9
Anders L Nielsen, Anders B Sorensen, Heidi L Holmberg, Prafull S Gandhi, Johan Karlsson, Jens Buchardt, Kasper Lamberth, Mads Kjelgaard-Hansen, Carsten Dan Ley, Brit B Sørensen, Wolfram Ruf, Ole H Olsen, Henrik Østergaard
Recombinant factor VIIa (FVIIa) variants with increased activity offer the promise to improve the treatment of bleeding episodes in patients with inhibitor-complicated hemophilia. Here, an approach was adopted to enhance the activity of FVIIa by selectively optimizing substrate turnover at the membrane surface. Under physiological conditions, endogenous FVIIa engages its cell-localized cofactor tissue factor (TF), which stimulates activity through membrane-dependent substrate recognition and allosteric effects...
November 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/29108091/effects-of-low-dose-epinephrine-on-perioperative-hemostasis-and-inflammatory-reaction-in-major-surgeries-a%C3%A2-randomized%C3%A2-clinical-trial
#10
J L Liu, W N Zeng, F Y Wang, C Chen, X Y Gong, H Yang, Z J Tan, X L Jia, L Yang
BACKGROUND: Haemostasis, thrombosis, and surgical stress-induced immune reaction are important for perioperative morbidity and recovery in major surgeries. OBJECTIVES: This study aimed to evaluate the effects of combined administration of low-dose epinephrine (LDEPI) plus tranexamic acid (TXA) on perioperative blood loss, thromboembolic complications, and inflammatory response in total hip arthroplasty (THA). PATIENTS /METHODS: Patients scheduled for THA (n = 195) were randomized into 3 interventions: intravenous (IV) LDEPI plus TXA (Group IV); topical (TP) diluted-epinephrine plus TXA (Group TP); and TXA alone as control (CT) (Group CT)...
November 6, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29101237/human-notch4-is-a-key-target-of-runx1-in-megakaryocytic-differentiation
#11
Yueying Li, Chen Jin, Hao Bai, Yongxing Gao, Shu Sun, Lei Chen, Lei Qin, Paul P Liu, Linzhao Cheng, Qian-Fei Wang
Megakaryocytes (MKs) in adult marrow produce platelets that play important roles in blood coagulation and hemostasis. Monoallelic mutations of the master transcription factor gene RUNX1 lead to familial platelet disorder (FPD) characterized by defective MK and platelet development. However, the molecular mechanisms of FPD remain unclear. Previously, we generated human induced pluripotent stem cells (iPSCs) from patients with FPD containing a RUNX1 nonsense mutation. Production of MKs from the FPD-iPSCs was reduced, and targeted correction of the RUNX1 mutation restored MK production...
November 3, 2017: Blood
https://www.readbyqxmd.com/read/29080382/factor-xiii-co-treatment-with-hemostatic-agents-in-hemophilia-a-increases-fibrin-%C3%AE-chain-crosslinking
#12
Joan D Beckman, Lori A Holle, Alisa S Wolberg
BACKGROUND: Hemophilia A results from the absence, deficiency, or inhibition of factor VIII (FVIII). Bleeding is treated with hemostatic agents (FVIII, recombinant activated factor VIIa [rFVIIa], anti-inhibitor coagulation complex [FEIBA], or recombinant porcine FVIII [rpFVIII]). Despite treatment, some patients have prolonged bleeding. Factor XIII-A2 B2 (FXIII) is a protransglutaminase. During clot contraction, thrombin-activated FXIII (FXIIIa) crosslinks fibrin and α2 -antiplasmin, which promotes red blood cell retention and increases clot stability and weight...
October 28, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29078927/acquired-bleeding-disorders
#13
REVIEW
Alisheba Hurwitz, Richard Massone, Bernard L Lopez
Emergency medicine practitioners treat bleeding patients on a regular basis. Disorders of hemostasis are an additional challenge in these patients but can be assessed and managed in a systematic fashion. Of particular importance to the emergency clinician are the iatrogenic causes of abnormal hemostasis. Other acquired causes of abnormal hemostasis include renal disease, immune thrombocytopenia, thrombotic thrombocytopenic purpura, hemolytic uremic syndrome, acquired coagulation factor inhibitors, acute traumatic coagulopathy, liver disease, and disseminated intravascular coagulopathy...
December 2017: Hematology/oncology Clinics of North America
https://www.readbyqxmd.com/read/29078576/bipolar-sealing-devices-in-video-assisted-thoracic-surgery
#14
REVIEW
Filippo Longo, Pierfilippo Crucitti, Fabio Quintarelli, Raffaele Rocco, Giuseppe Mangiameli, Gaetano Rocco
Intraoperative bleeding is one of the main severe complications in complete video-assisted thoracic surgery (c-VATS) and post-operative air-leaks prevention still represents an important challenge. Usually, hemostasis is often difficult and unsafe when the VATS approach is performed and the potential role of bipolar sealing devices is still undefined, as proven by limited experiences reported in the literature. By introducing endostaplers in VATS surgery, it was possible to perform safe thoracoscopic resections of lung...
2017: J Vis Surg
https://www.readbyqxmd.com/read/29077405/discovery-of-a-parenteral-small-molecule-coagulation-factor-xia-inhibitor-clinical-candidate-bms-962212
#15
Donald J P Pinto, Michael J Orwat, Leon M Smith, Mimi L Quan, Patrick Y S Lam, Karen A Rossi, Atsu Apedo, Jeffrey M Bozarth, Yiming Wu, Joanna J Zheng, Baomin Xin, Nathalie Toussaint, Paul Stetsko, Olafur Gudmundsson, Brad Maxwell, Earl J Crain, Pancras C Wong, Zhen Lou, Timothy W Harper, Silvi A Chacko, Joseph E Myers, Steven Sheriff, Huiping Zhang, Xiaoping Hou, Arvind Mathur, Dietmar A Seiffert, Ruth R Wexler, Joseph M Luettgen, William R Ewing
Factor XIa (FXIa) is a blood coagulation enzyme that is involved in the amplification of thrombin generation. Mounting evidence suggests that direct inhibition of FXIa can block pathologic thrombus formation while preserving normal hemostasis. Preclinical studies using a variety of approaches to reduce FXIa activity, including direct inhibitors of FXIa, have demonstrated good antithrombotic efficacy without increasing bleeding. On the basis of this potential, we targeted our efforts at identifying potent inhibitors of FXIa with a focus on discovering an acute antithrombotic agent for use in a hospital setting...
November 17, 2017: Journal of Medicinal Chemistry
https://www.readbyqxmd.com/read/29067075/a-chinese-family-with-congenital-dysfibrinogenemia-carries-a-heterozygous-missense-mutation-in-fga-concerning-the-genetic-abnormality-and-clinical-treatment
#16
Jihao Zhou, Peng Zhu, Xinyou Zhang
OBJECTIVES: Congenital dysfibrinogenemia is a rare hereditary disease characterized by normal antigen level but lower function level of fibrinogen. Patients with congenital dysfibrinogenemia usually present as bleeding and/or thrombotic events. In this study, we explored the genetic abnormality and clinical treatment of a Chinese family with dysfibrinogenemia. METHODS: This study was conducted in Jan 2015 to Jan 2016 in the Second Medical College (Shenzhen People's Hospital, Jinan University, Shenzhen, Guangdong Province, P...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/29066680/-fresh-frozen-plasma-provides-endothelial-protection-when-administered-early-after-stem-cell-transplantation
#17
Osamu Imataki, Makiko Uemura
BACKGROUND: Veno-occlusive disease(VOD)is a fatal coagulopathy, which is caused by an endothelial disorder among patients who undergo hematopoietic stem cell transplantation(SCT). Some protective agents, such as administration of fresh frozen plasma(FFP), have been evaluated for both prophylactic and targeted therapy. PURPOSE: We evaluated the prophylactic efficacy of FFP for VOD in a retrospective study. METHODS: We surveyed patients who received SCT in our hospital between January 2011 and December 2011...
October 2017: Gan to Kagaku Ryoho. Cancer & Chemotherapy
https://www.readbyqxmd.com/read/29065752/is-blood-transfusion-necessary-in-all-patients-with-disseminated-intravascular-coagulation-associated-postpartum-hemorrhage
#18
Hale Goksever Celik, Engin Celik, Ismail Ozdemir, Ayse Ozge Savkli, Kamuran Sanli, Husnu Gorgen
OBJECTIVE: The diagnosis of disseminated intravascular coagulation (DIC) in obstetrics is complicated owing to physiological changes, particularly during late pregnancy and the postpartum period. Therefore, a pregnancy-modified DIC score that includes only three components of the International Society on Thrombosis and Hemostasis (ISTH) DIC score has been constructed. Our aim was to determine how many blood-transfused postpartum women actually had the diagnosis of overt DIC according to the modified ISTH score and had the correct indications for blood transfusion...
October 24, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29055663/damage-control-concept-and-implementation
#19
B Malgras, B Prunet, X Lesaffre, G Boddaert, S Travers, P-J Cungi, E Hornez, O Barbier, H Lefort, S Beaume, M Bignand, J Cotte, P Esnault, J-L Daban, J Bordes, E Meaudre, J-P Tourtier, S Gaujoux, S Bonnet
The concept of damage control (DC) is based on a sequential therapeutic strategy that favors physiological restoration over anatomical repair in patients presenting acutely with hemorrhagic trauma. Initially described as damage control surgery (DCS) for war-wounded patients with abdominal penetrating hemorrhagic trauma, this concept is articulated in three steps: surgical control of lesions (hemostasis, sealing of intestinal spillage), physiological restoration, then surgery for definitive repair. This concept was quickly adapted for intensive care management under the name damage control resuscitation (DCR), which refers to the modalities of hospital resuscitation carried out in patients suffering from traumatic hemorrhagic shock within the context of DCS...
October 18, 2017: Journal of Visceral Surgery
https://www.readbyqxmd.com/read/29052850/curcumin-hemostasis-thrombosis-and-coagulation
#20
REVIEW
Faeze Keihanian, Amin Saeidinia, Ramin Khameneh Bagheri, Thomas P Johnston, Amirhossein Sahebkar
Atherothrombotic cardiovascular disease is a major cause of mortality throughout the world. Platelet activation and aggregation play a central role in hemostasis and thrombosis. Herbal medicines have been traditionally used in the management of cardiovascular disease and can help in modifying its progression, particularly in hemostasis and the coagulation process, as well as altering platelet function tests and some coagulation parameters. Curcumin is a polyphenol derived from the Curcuma longa plant and has been used extensively in complementary and alternative medicine, as it is nontoxic and safe with various therapeutic properties...
October 20, 2017: Journal of Cellular Physiology
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