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https://www.readbyqxmd.com/read/29139025/coagulopathy-in-zellweger-spectrum-disorders-a-role-for-vitamin-k
#1
Sara Zeynelabidin, Femke C C Klouwer, Joost C M Meijers, Monique H Suijker, Marc Engelen, Bwee Tien Poll-The, C Heleen van Ommen
INTRODUCTION: Zellweger spectrum disorders (ZSDs) are caused by an impairment of peroxisome biogenesis, resulting in multiple metabolic abnormalities. This leads to a range of symptoms, including hepatic dysfunction and coagulopathy. This study evaluated the incidence and severity of coagulopathy and the effect of vitamin K supplementation orally and IV in ZSD. METHODS: Data were retrospectively retrieved from the medical records of 30 ZSD patients to study coagulopathy and the effect of vitamin K orally on proteins induced by vitamin K absence (PIVKA-II) levels...
November 14, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29137047/massive-neonatal-intracranial-hemorrhage-caused-by-bromadiolone-a-case-report
#2
Mingsheng Ma, Mengqi Zhang, Xiaoyan Tang, Zhenghong Li
RATIONALE: Bromadiolone, often called a super-warfarin, is a potent rodenticide with long half-life. Skin and mucosal bleeding is the most common clinical manifestations of its intoxication. Bromadiolone intoxications in adults and children have been reported, but this phenomenon is rarely seen in fetuses. This paper presents a case of neonate with massive intracranial hemorrhage mediated by bromadiolone intoxication, highlighting that the bromadiolone is potentially lethal to the fetus...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132321/the-role-of-the-specialized-team-in-the-operation-of-continuous-renal-replacement-therapy-a-single-center-experience
#3
Harin Rhee, Gum Sook Jang, Miyeun Han, In Seong Park, Il Young Kim, Sang Heon Song, Eun Young Seong, Dong Won Lee, Soo Bong Lee, Ihm Soo Kwak
BACKGROUND: The requirement of continuous renal replacement therapy (CRRT) is increasing with the growing incidence of acute kidney injury (AKI). The decision to initiate CRRT is not difficult if an adequate medical history is obtained. However, the handling and maintenance of CRRT constitute a labor-intensive intervention that requires specialized skills. For these reasons, our center organized a specialized CRRT team in March 2013. The aim of this study is to report on the role of a specialized CRRT team and to evaluate the team's outcome...
November 13, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29131074/tranexamic-acid-failed-to-reverse-the-anticoagulant-effect-and-bleeding-by-an-oral-direct-factor-xa-inhibitor-edoxaban
#4
Yuko Honda, Taketoshi Furugohri, Yoshiyuki Morishima
BACKGROUND/AIMS: Agents to reverse the anticoagulant effect of edoxaban, an oral direct factor Xa inhibitor, would be desirable in emergency situations. The aim of this study is to determine the effect of tranexamic acid, an antifibrinolytic agent, on the anticoagulant activity and bleeding by edoxaban in rats. METHODS: A supratherapeutic dose of edoxaban (3 mg/kg) was intravenously administered to rats. Three minutes after dosing, tranexamic acid (100 mg/kg) was given intravenously...
November 3, 2017: Pharmacology
https://www.readbyqxmd.com/read/29126301/coagulation-testing-in-the-core-laboratory
#5
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/29106076/rivaroxaban-reversal-with-prothrombin-complex-concentrate-or-tranexamic-acid-in-healthy-volunteers
#6
J H Levy, K T Moore, M D Neal, D Schneider, V S Marcsisin, J Ariyawansa, J I Weitz
BACKGROUND: Oral factor Xa inhibitors such as rivaroxaban are widely used, but specific reversal agents are lacking. Although 4-factor-prothrombin complex concentrate (4F-PCC) and tranexamic acid (TXA) are sometimes used to manage serious bleeding, their efficacy is unknown. Prior studies in healthy subjects taking rivaroxaban revealed that 4F-PCC partially reverses the prolonged prothrombin time (PT), and fully restores endogenous thrombin potential (ETP). The effect of TXA has not been evaluated...
November 6, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29104756/factor-vii-deficiency-a-novel-missense-variant-and-genotype-phenotype-correlation-in-patients-from-southern-italy
#7
Giovanni Tiscia, Giovanni Favuzzi, Elena Chinni, Donatella Colaizzo, Lucia Fischetti, Mariano Intrieri, Maurizio Margaglione, Elvira Grandone
This study aimed at attempting to correlate genotype and phenotype in factor VII deficiency. Here, we present molecular and clinical findings of 10 patients with factor VII deficiency. From 2013 to 2016, 10 subjects were referred to our center because of a prolonged prothrombin time identified during routine or presurgery examinations or after a laboratory assessment of a bleeding episode. Mutation characterization was performed using the bioinformatics applications PROMO, SIFT, and Polyphen-2. Structural changes in the factor VII protein were analyzed using the SPDB viewer tool...
2017: Human Genome Variation
https://www.readbyqxmd.com/read/29093471/antithrombotic-properties-of-jj1-a-potent-and-novel-thrombin-inhibitor
#8
Wonhwa Lee, Suyeon Lee, Joonhyeok Choi, Jun-Hyeong Park, Kyung-Min Kim, Jun-Goo Jee, Jong-Sup Bae
The development of new anticoagulants is an important goal for the improvement of thrombosis treatment. Recent studies have suggested the importance of thrombin inhibitors in the modulation of thromboembolic disorders. The aim of this study was to discover a new small-molecule thrombin inhibitor. In this study, the compound JJ1, which has a novel scaffold, was selected by structure-based docking simulation to determine its potential inhibitory activity against thrombin. JJ1 was shown to inhibit the catalytic activity of human α-thrombin with a K i of 0...
November 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29080903/human-endoglin-as-a-potential-new-partner-involved-in-platelet-endothelium-interactions
#9
Elisa Rossi, Miguel Pericacho, Christilla Bachelot-Loza, Dominique Pidard, Pascale Gaussem, Sonia Poirault-Chassac, Francisco J Blanco, Carmen Langa, Consuelo González-Manchón, Jose M Lopez Novoa, David M Smadja, Carmelo Bernabeu
Complex interactions between platelets and activated endothelium occur during the thrombo-inflammatory reaction at sites of vascular injuries and during vascular hemostasis. The endothelial receptor endoglin is involved in inflammation through integrin-mediated leukocyte adhesion and transmigration; and heterozygous mutations in the endoglin gene cause hereditary hemorrhagic telangiectasia type 1. This vascular disease is characterized by a bleeding tendency that is postulated to be a consequence of telangiectasia fragility rather than a platelet defect, since platelets display normal functions in vitro in this condition...
October 28, 2017: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29072238/prevalence-of-lupus-anticoagulant-in-women-with-spontaneous-abortion-in-zaria
#10
I N Ibrahim, A I Mamman, S E Adaji, A Hassan, A A Babadoko
INTRODUCTION: Spontaneous abortion (SA) is a common complication of pregnancy. Presence of lupus anticoagulant (LA), one of the antiphospholipid antibodies, has been associated with SA in many studies, especially in Caucasians. This study was carried out to determine the prevalence of LA in women with SA in ABUTH, Zaria. MATERIALS AND METHODS: A cohort of 100 consecutive women presenting with SA with no history of thrombotic episodes were enrolled into the study...
September 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29025666/comprehensive-assessment-of-electrospun-scaffolds-hemocompatibility
#11
Jana Horakova, Petr Mikes, Ales Saman, Tereza Svarcova, Vera Jencova, Tomas Suchy, Bohdana Heczkova, Sarka Jakubkova, Jaroslava Jirousova, Renata Prochazkova
Biodegradable polyesters, namely polycaprolactone (PCL) and copolymer of polylactide and polycaprolactone (PLCL) were electrospun into various fibrous structures and their hemocompatibility was evaluated in vitro. Firstly, hemolytic effect was evaluated upon incubation with diluted whole blood. The results showed that the degree of hemolysis depended on chemical composition and fibrous morphology. Electrospun polycaprolactone induced slight degree of hemolysis depending on its molecular weight and fibrous morphology; copolymer PLCL did not cause detectable hemolysis...
January 1, 2018: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28994544/-effect-of-shuxuetong-injection-on-anticoagulant-effect-of-warfarin-in-rats
#12
Hai-Feng Zhao, Jia-Hui Sun, Shuang Liu, Yan Liu, Gao-Feng Liu
To explore the effect of Shuxuetong injection on the pharmacodynamics and pharmacokinetics of warfarin in rats, and to provide reference for rational drug use. In studies on the single dose of warfarin, Wistar rats were randomly divided into four groups: blank control group(group A), Shuxuetong injection group(group B), warfarin control group(group C), and warfarin+Shuxuetong injection group(group D). In studies on the steady state of warfarin, Wistar rats were randomly divided into warfarin control group(group E) and warfarin+Shuxuetong injection group(group F)...
March 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28987360/physicochemical-properties-and-anticoagulant-activity-of-polyphenols-derived-from-lachnum-singerianum
#13
Shuai Zong, Jing Ji, Jinglei Li, Qing-Hua Yang, Ming Ye
In this study, polyphenols (LSP) were obtained from the fermentation broth of Lachnum singerianum. Two fractions were isolated by Sephadex LH-20 chromatographic column, and the primary fraction (LSP-1) was collected. The comprehensive physicochemical properties of phenolic acids and polyhydroxy phenolic compounds of LSP-1 were determined by UV-visible spectroscopy, Fourier transform infrared spectroscopy, and gas chromatography-mass spectrometry. Results of anticoagulant activity assay in vitro showed that LSP-1 could lengthen prothrombin time, activated partial thromboplastin time, and thrombin time of mouse plasma...
October 2017: Journal of Food and Drug Analysis
https://www.readbyqxmd.com/read/28974354/lamivudine-versus-entecavir-in-the-rescue-of-chemotherapy-induced-hepatitis-b-flare-up
#14
Yi-Jun Liao, Yen-Chang Li, Shou-Wu Lee, Chun-Ying Wu, Sheng-Shun Yang, Hong-Zen Yeh, Chi-Sen Chang, Teng-Yu Lee
BACKGROUND: Lack of nucleos(t)ide analogue (NA) prophylaxis prior to chemotherapy is a common problem worldwide. The efficacy of newer-generation NAs in the rescue for the hepatitis B virus (HBV) reactivation has not been confirmed. We aimed to compare lamivudine (LVD) and entecavir (ETV) in the rescue of chemotherapy-induced HBV flare-up. METHODS: In this retrospective cohort study, we screened all HBV carriers who received therapeutic LVD or ETV for hepatitis flare-up after chemotherapy between January 1, 2004 and December 31, 2015...
September 30, 2017: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/28970683/rapid-dry-plasma-thawing-system-an-alternative-to-conventional-thawing-baths
#15
S Sanooja Pinki, Ganesh Mohan, Aboobacker Mohamed Rafi, Susheela Jacob Innah, Tom Thomas
BACKGROUND: Fresh frozen plasma (FFP) should be thawed before transfusing to the patient. Prolonged or uncontrolled thawing can denature plasma proteins. The potential risk of contamination by wet thawing had always been a point of concern. AIMS: Here, we compared and evaluated the effect of thawing on clotting factor activities by two different methods (wet and dry) and other factors such as risk of bacterial contamination, throughput, turnaround time, and efficacy of thawing...
July 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28968301/diminished-coagulation-capacity-assessed-by-calibrated-automated-thrombography-during-acute-puumala-hantavirus-infection
#16
Sirpa M Koskela, Lotta Joutsi-Korhonen, Satu M Mäkelä, Heini Huhtala, Antti I Vaheri, Ilkka Pörsti, Jukka T Mustonen, Outi K Laine
: Coagulation abnormalities are associated with Puumala-virus-induced hemorrhagic fever with renal syndrome (PUUV-HFRS). We evaluated the coagulation capacity of plasma during acute PUUV-HFRS by measuring thrombin generation using calibrated automated thrombography (CAT). The study cohort comprised 27 prospectively collected, consecutive, hospital-treated patients with acute PUUV infection. Blood samples were drawn in the acute phase and at the control visit approximately 5 weeks later. To evaluate thrombin generation, the lag time of initiation, endogenous thrombin potential (ETP), and peak and time to peak thrombin concentration were assessed by CAT in platelet poor plasma without corn trypsin inhibitor...
September 28, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28950719/evaluation-of-thromboelastometry-in-sepsis-in-correlation-with-bleeding-during-invasive-procedures
#17
Pavel Lukas, Miroslav Durila, Jakub Jonas, Tomas Vymazal
Prolongation of prothrombin time (PT) is often encountered in patients with sepsis. On the other hand, thromboelastometry as a global coagulation test might yield normal results. The aim of our study was to evaluate whether prolonged PT in the presence of normal thromboelastometry parameters is associated with severe bleeding in patients with sepsis undergoing invasive procedures. In patients with sepsis undergoing low-risk bleeding invasive procedures (central venous catheter placement, dialysis catheter insertion, drain insertion, and so on) or high-risk bleeding invasive procedures (surgical tracheostomy, surgical laparotomy, thoracotomy, and so on), coagulation was assessed by thromboelastometry using EXTEM test (test for evaluation of the extrinsic pathway of coagulation, contains activator of extrinsic pathway) and with PT...
January 1, 2017: Clinical and Applied Thrombosis/hemostasis
https://www.readbyqxmd.com/read/28935443/complex-formation-with-protamine-prolongs-the-thrombin-inhibiting-effect-of-dna-aptamer-in%C3%A2-vivo
#18
V A Spiridonova, T M Novikova, D M Nikulina, T A Shishkina, E V Golubkina, O S Dyukareva, N N Trizno
Antithrombin DNA aptamersRE31 are single-chain oligonucleotides that fold into three-dimensional forms allowing them to bind the enzyme with high affinity and inhibit its activity in vivo. They are rapidly degraded by a nonspecific nuclease, and, to prolong the lifetime of the aptamer DNA in the bloodstream, it is necessary to coat it with a polymer envelope. A new approach to solving this problem based on preparation of DNA-polyelectrolyte complexes with a minimal particle size that can circulate with blood flow...
September 19, 2017: Biochimie
https://www.readbyqxmd.com/read/28933567/vitamin-k-and-cancer
#19
Sofia Dahlberg, Jacob Ede, Ulf Schött
Subclinical vitamin K deficits refer to carboxylation defects of different types of vitamin K-dependent hepatic and extrahepatic so-called Gla proteins without prolongation of the prothrombin time. This condition has been reported in different clinical situations due to insufficient supply or malabsorption of vitamin K as well as drug interactions. This review discusses the effects of different vitamin K subspecies on tumour growth and the possible anti-tumour effects of increased vitamin K intake. Blocking carboxylation of vitamin K-dependent proteins with warfarin anticoagulation - what are the risks/benefits for carcinogenesis? Previous studies on both heparin and low molecular weight heparin blocking of the vitamin K-dependent factors X and II have shown tumour suppressive effects...
September 21, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28930850/evaluation-of-acute-normovolemic-hemodilution-in-patients-undergoing-intracranial-meningioma-resection-a-quasi-experimental-trial
#20
Lei Yang, Hui-Hui Wang, Fu-Sheng Wei, Long-Xian Ma
The aim of this study was to evaluate the safety of acute normovolemic hemodilution (ANH) for patients undergoing intracranial meningioma resection.Eighty patients (aged 48-65 years) with American Society of Anesthesiologists physical status I-II undergoing intracranial meningioma resection were included in this prospective observational study. The patients were randomly divided into group A (ANH group), which underwent a combination of ANH and intraoperative cell salvage (ICS), and group B (control group), which underwent ICS alone...
September 2017: Medicine (Baltimore)
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