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Factor viii

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https://www.readbyqxmd.com/read/28237345/expression-of-vascular-endothelial-growth-factor-vegf-and-factor-viii-in-the-gilt-placenta-and-its-relation-to-fetal-development
#1
Gregório C Guimarães, Lorena A Alves, Rafael P Betarelli, Camila S O Guimarães, Fernanda R Helmo, Carlos D Pereira Júnior, Rosana R M Corrêa, Márcio G Zangeronimo
Vascular endothelial growth factor (VEGF) and von Willebrand factor (Factor VIII) are important components involved in the regulation of vascular development and identification of endothelial cells in many tissues. This study aimed to evaluate the presence of these substances in the placenta of pig fetuses located in different uterine regions and at different gestational ages and correlate them with fetal development. One hundred seventy-five pig fetuses from fifteen gilts slaughtered at 50, 80 and 106 days of pregnancy were used...
April 1, 2017: Theriogenology
https://www.readbyqxmd.com/read/28229158/detection-of-procoagulant-imbalance-modified-endogenous-thrombin-potential-with-results-expressed-as-ratio-of-values-with-to-without-thrombomodulin
#2
Armando Tripodi
Each individual possesses his/her own endogenous-thrombin-potential (ETP) (i. e. the ability to generate thrombin) which depends on the relative strength of the pro- and anticoagulant drivers operating in plasma. This ability depends in turn on the clinical conditions in which the balance between the two drivers is variably affected. One of the major determinants of this balance is the factor (F)VIII-protein C(PC) axis and its effect can be conveniently explored by the thrombin generation procedures with results expressed as ETP ratio with/without thrombomodulin (TM) (ETP-TM ratio)...
February 23, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28226363/coagulation-profile-in-patients-with-different-etiologies-for-cushing-syndrome-a-prospective-observational-study
#3
Amit Tirosh, Maya Lodish, Charalampos Lyssikatos, Elena Belyavskaya, Richard A Feelders, Constantine A Stratakis
Previous studies reported a higher prevalence of venous-thromboembolic events among patients with Cushing disease (CD) compared to those with ACTH-independent Cushing syndrome (CS) from adrenal sources. The objective of the current study was to evaluate the coagulation profile of patients with CS from different etiologies. A prospective observational study was conducted at a clinical research center. The study included adult patients admitted for evaluation of suspected CS (n=85), that were divided into 3 groups: CD (n=22), ACTH-independent CS from an adrenal tumor/hyperplasia (adrenal CS, n=21), and a control group consisting of subjects with negative screening for CS (rule-out CS, n=42)...
February 22, 2017: Hormone and Metabolic Research, Hormon- und Stoffwechselforschung, Hormones et Métabolisme
https://www.readbyqxmd.com/read/28224621/laboratory-assessment-of-sudden-sensorineural-hearing-loss-a-case-control-study
#4
Tommaso Fasano, Thelma A Pertinhez, Lorenzo Tribi, Daniela Lasagni, Annalisa Pilia, Luigi Vecchia, Roberto Baricchi, Giovanni Bianchin
OBJECTIVES/HYPOTHESIS: Sudden sensorineural hearing loss (SSHL) is an otologic emergency that affects five to 30 subjects per 100,000/year. The cause of SSHL remains unknown or uncertain in 70% to 90% of cases, and treatment decisions are usually made without knowing the etiology. STUDY DESIGN: Prospective case-control study. METHODS: One hundred thirty-one idiopathic SSHL patients were recruited from January 2014 to June 2015 in concordance with the Statements of Clinical Practice Guideline and divided into groups according to the disease severity...
February 22, 2017: Laryngoscope
https://www.readbyqxmd.com/read/28220685/incidence-of-low-titre-factor-viii-inhibitors-in-patients-with-haemophilia-a-meta-analysis-of-observational-studies
#5
A Messori, F Peyvandi, D Mengato, P M Mannucci
INTRODUCTION: A few studies have been focused on low-titre inhibitors in patients with haemophilia A. Although several putative factors have been implicated in the development of these inhibitors, solid data are still lacking. AIM: The aim of this study was to perform a proportion meta-analysis on the incidence of low-titre inhibitors in haemophilia A. METHODS: We surveyed the PubMed database to identify studies on de novo development of low-titre inhibitors in haemophilia A patients...
February 20, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28220631/treatment-of-bleeding-episodes-with-recombinant-factor-viii-fc-fusion-protein-in-a-long-study-subjects-with-severe-haemophilia-a
#6
A D Shapiro, J N Mahlangu, D Perry, J Pasi, D V Quon, P Chowdary, E Tsao, S Li, A Innes, G F Pierce, G A Allen
INTRODUCTION: The Phase 3 A-LONG study demonstrated the safety and efficacy of rFVIIIFc for the control and prevention of bleeding episodes in severe haemophilia A. AIM: To describe the treatment of bleeding episodes with rFVIIIFc in the A-LONG study. METHODS: A-LONG subjects (<1 IU dL(-1) endogenous FVIII) were treated with individualized prophylaxis (Arm 1), weekly prophylaxis (Arm 2) or episodic treatment (Arm 3). Information recorded for each bleeding episode included type, location and dose to treat the episode...
February 20, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28220555/population-pharmacokinetic-characterization-of-bay-81-8973-a-full-length-recombinant-factor-viii-lessons-learned-importance-of-including-samples-with-factor-viii-levels-below-the-quantitation-limit
#7
D Garmann, S McLeay, A Shah, P Vis, M Maas Enriquez, B A Ploeger
INTRODUCTION: The pharmacokinetics (PK), safety and efficacy of BAY 81-8973, a full-length, unmodified, recombinant human factor VIII (FVIII), were evaluated in the LEOPOLD trials. AIM: The aim of this study was to develop a population PK model based on pooled data from the LEOPOLD trials and to investigate the importance of including samples with FVIII levels below the limit of quantitation (BLQ) to estimate half-life. METHODS: The analysis included 1535 PK observations (measured by the chromogenic assay) from 183 male patients with haemophilia A aged 1-61 years from the 3 LEOPOLD trials...
February 20, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28214180/a-successful-experience-of-the-iranian-blood-transfusion-organization-in-improving-accessibility-and-affordability-of-plasma-derived-medicine
#8
REVIEW
Azita Chegini, Seyed Ardeshir Torab, Ali Akbar Pourfatollah
Plasma is the liquid part of blood. It is estimated 21.6 million liters of plasma collect from Whole blood annually. From these plasma, 4.2 million liters transfuse, 8.1 million liters fractionate, 9.3 million liters waste. Nowadays, blood products and PDM (plasma derived medicine) consider as essential medicine in modern health care and transfusion medicine. Iranian blood transfusion organization as a non-profit organization was established in 1974 in order to centralize all blood transfusion activities from donor recruitment to distribution of blood components to hospitals...
January 4, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28212975/budget-impact-analysis-of-prolonged-half-life-recombinant-fviii-therapy-for-hemophilia-in-the-united-states
#9
Suzanne McMullen, Brieana Buckley, Eric Hall, Jon Kendter, Karissa Johnston
BACKGROUND: Hemophilia A is a factor VIII deficiency, associated with spontaneous, recurrent bleeding episodes. This may lead to comorbidities such as arthropathy and joint replacement, which contribute to morbidity and increased health care expenditure. Recombinant factor VIII Fc fusion protein (rFVIIIFc), a prolonged half-life factor therapy, requires fewer infusions, resulting in reduced treatment burden. OBJECTIVE: Use a budget impact analysis to assess the potential economic impact of introducing rFVIIIFc to a formulary from the perspective of a private payer in the United States...
January 2017: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/28211222/nasal-hemophilic-pseudotumor-in-a-patient-with-mild-hemophilia-a-and-allergic-rhinitis
#10
Yoshiyasu Ogata, Mikio Monji, Keita Kai, Muneaki Matsuo
Hemophilic pseudotumor is a rare complication, even in patients with severe hemophilia. Herein we report on a case of hemophilic pseudotumor in a patient with mild hemophilia A and allergic rhinitis, initially suspected to be a nasal tumor. The pseudotumor was cured by supplementation with recombinant factor VIII concentrates, and medication for allergic rhinitis. Pseudotumor should always be considered in hemophiliac patients, even in those with only mild deficiency of coagulation factors.
February 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28207534/a-case-control-study-on-the-structural-equation-model-of-the-mechanism-of-coagulation-and-fibrinolysis-imbalance-in-chronic-schistosomiasis
#11
Aiping Le, Lunli Zhang, Wei Liu, Xiaopeng Li, Jianwei Ren, An Ning
A structural equation model was used for verification with chronic schistosomiasis to investigate the coagulation-anticoagulation system imbalance and to deduce the mechanism of D-dimer (D-D) level elevation in patients with advanced schistosome hepatic disease. We detected the plasma levels of tissue-type fiber plasminogen activator (tPA), urokinase type plasminogen activator (uPA), plasmin-antiplasmin complex (PAP), plasminogen (PLG), antithrombin (AT), plasminogen activator inhibitor 1 (PAI1), D-D, factor VIII: C (FVIII:C), antithrombin-III (AT-III), PLG, protein S (PS), and protein C (PC) in the healthy people as control (69), patients with chronic schistosomiasis (150) or advanced chronic schistosomiasis (90)...
February 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28205396/can-the-diagnostic-reliability-of-the-thrombin-generation-test-as-a-global-haemostasis-assay-be-improved-the-impact-of-calcium-chloride-concentration
#12
L A Parunov, S S Surov, Y Liang, T K Lee, M V Ovanesov
BACKGROUND: Thrombin generation test (TGT) is a global haemostasis assay with a potential to predict bleeding tendencies and treatment effects in patients with haemophilia. Despite 15 years of clinical research, the diagnostic value of TGT remains controversial, possibly due to suboptimal sensitivity to coagulation deficiencies, robustness and reproducibility. OBJECTIVE: The goal of this study was to explore the effect of calcium chloride (CaCl2 ) concentration on the TGT's response to intrinsic coagulation factors (F) VIII, IX and XIa...
February 15, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28205285/natural-history-and-clinical-characteristics-of-inhibitors-in-previously-treated-haemophilia-a-patients-a-case-series
#13
A Iorio, A M Barbara, M Makris, K Fischer, G Castaman, C Catarino, E Gilman, K Kavakli, T Lambert, R Lassila, T Lissitchkov, E Mauser-Bunschoten, M E Mingot-Castellano, N Ozdemir, I Pabinger, R Parra, J Pasi, K Peerlinck, A Rauch, V Roussel-Robert, M Serban, A Tagliaferri, J Windyga, E Zanon
BACKGROUND: Development of inhibitors is the most serious complication in haemophilia A treatment. The assessment of risk for inhibitor formation in new or modified factor concentrates is traditionally performed in previously treated patients (PTPs). However, evidence on risk factors for and natural history of inhibitors has been generated mostly in previously untreated patients (PUPs). The purpose of this study was to examine cases of de novo inhibitors in PTPs reported in the scientific literature and to the EUropean HAemophilia Safety Surveillance (EUHASS) programme, and explore determinants and course of inhibitor development...
February 15, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28203580/unusual-presentation-of-diffuse-large-b-cell-lymphoma-with-splenic-infarcts
#14
Vivek Kumar, Parita Soni, Vishangi Dave, Jonathan Harris
A 67-year-old man presented with a 3-day history of abdominal pain, fever, and significant weight loss over 2 months. Physical examination revealed left upper quadrant tenderness, hepatomegaly, splenomegaly, and bilateral pitting edema but peripheral lymphadenopathy was absent. Laboratory tests showed anemia, thrombocytopenia, elevated prothrombin time (PT), partial thromboplastin time (PTT), and increased lactate dehydrogenase (LDH). PTT was corrected completely in mixing study. Further workup for the cause of coagulopathy revealed decreased levels of all clotting factors except factor VIII and increase fibrinogen levels, which ruled out disseminated intravascular coagulation (DIC)...
January 2017: Journal of Investigative Medicine High Impact Case Reports
https://www.readbyqxmd.com/read/28198996/treatment-burden-haemostatic-strategies-and-real-world-inhibitor-screening-practice-in-non-severe-haemophilia-a
#15
Paul Batty, Steve K Austin, Kate Khair, Carolyn M Millar, Ben Palmer, Savita Rangarajan, Jan-Phillip Stümpel, Murugaiyan Thanigaikumar, Thynn T Yee, Daniel P Hart
Inhibitor formation in non-severe haemophilia A is a life-long risk and associated with morbidity and mortality. There is a paucity of data to understand real-world inhibitor screening practice. We evaluated the treatment burden, haemostatic strategies, F8 genotyping and inhibitor screening practices in non-severe haemophilia A in seven London haemophilia centres. In the 2-year study period, 44% (377/853) patients received at least one haemostatic treatment. Seventy-nine percent of those treated (296/377) received factor VIII (FVIII) concentrate...
March 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28198071/measuring-fviii-activity-of-glycopegylated-recombinant-factor-viii-n8-gp-with-commercially-available-one-stage-clotting-and-chromogenic-assay-kits-a-two-centre-study
#16
A Hillarp, A Bowyer, M Ezban, P Persson, S Kitchen
INTRODUCTION: Factor VIII activity (FVIII:C) assays of samples containing glycoPEGylated recombinant FVIII such as turoctocog alfa pegol (N8-GP) can be associated with differences in FVIII recovery in vitro between various one-stage activated partial thromboplastin time (APTT)-based clotting assays and some chromogenic assays. Careful validation and qualification of specific assays and conditions is therefore necessary for the assessment of FVIII:C in samples containing modified FVIII molecules...
February 14, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28197892/the-effect-of-acute-aerobic-exercise-on-hemostasis-in-obstructive-sleep-apnea
#17
Ryan A Martin, Courtney Strosnider, Gabrielle Giersch, Christopher J Womack, Trent A Hargens
PURPOSE: Individuals with obstructive sleep apnea (OSA) have an altered hemostatic balance; however, the exercise response is less described. The purpose of this study is to determine the hemostatic response after acute aerobic exercise in obstructive sleep apnea. METHODS: Eighteen males (nine OSA vs. nine controls) were recruited from the university and local community. Individuals with evidence of cardiovascular, pulmonary, or metabolic disease were excluded. An apnea-hypopnea index (AHI) of >5 was a criterion for OSA...
February 14, 2017: Sleep & Breathing, Schlaf & Atmung
https://www.readbyqxmd.com/read/28186089/adenovirus-mediated-tipe2-overexpression-inhibits-gastric-cancer-metastasis-via-reversal-of-epithelial-mesenchymal-transition
#18
H Yin, X Huang, M Tao, Q Hu, J Qiu, W Chen, J Wu, Y Xie
Tumor necrosis factor (TNF)-alpha-induced protein 8-like 2 (TNFAIP8L2; also termed TIPE2) has been shown to be involved in both the immune-negative modulation and cancer. We previously found that TIPE2 is lost in human gastric cancer, and TIPE2 restoration suppresses gastric cancer growth by induction of apoptosis and impairment of protein kinase B (PKB/AKT) and extracellular signal-regulated kinase-1/2 (ERK1/2) signaling. However, its correlation with epithelial-mesenchymal transition (EMT) in gastric cancer is largely elusive...
February 10, 2017: Cancer Gene Therapy
https://www.readbyqxmd.com/read/28185978/long-term-serial-changes-in-platelet-activation-indices-following-sirolimus-eluting-and-bare-metal-stents-implantation-in-patients-with-stable-coronary-artery-disease
#19
Maria Marketou, George E Kochiadakis, Aikaterini Giaouzaki, Katerini Sfiridaki, Stelios Petousis, Fragiskos Maragoudakis, Konstantinos Roufas, Despoina Vougia, John Logakis, Gregory Chlouverakis, Panos E Vardas
BACKGROUND: Platelet activation is crucial in the development of stent thrombosis following percutaneous coronary intervention (PCI). We carried out a long-term assessment of multiple factors implicated in the thrombotic process and markers of platelet activation, after implantation of sirolimus-eluting stents (SES) in patients with stable coronary artery disease (CAD), and we compared the results with those after bare-metal stent (BMS) implantation. METHODS: Forty-seven consecutive patients, aged <70 years, with severe stenosis (>70% narrowing of the lumen) of one major epicardial coronary artery and stable CAD, underwent successful elective PCI and were randomly allocated to SES (n=25) or BMS (n=22)...
February 6, 2017: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28185002/-multiple-thrombophilic-risk-markers-in-patients-%C3%A2-%C2%BA65%C3%A2-years-of-age-with-retinal-vein-occlusion
#20
C Kuhli-Hattenbach, P Hellstern, W Miesbach, T Kohnen, L-O Hattenbach
BACKGROUND: The potential impact of multiple thrombophilic defects on retinal venous occlusive (RVO) diseases with regard to age and various risk factors has not been studied extensively. MATERIALS AND METHODS: In a retrospective, multicenter study, thrombophilia data of 128 patients <65 years of age with RVO and 110 healthy subjects were evaluated. The main measure outcome was the prevalence of multiple thrombophilic disorders. RESULTS: Multiple thrombophilic defects were significantly more prevalent among RVO patients (18...
February 9, 2017: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
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