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https://www.readbyqxmd.com/read/28544373/genetic-markers-for-inherited-thrombophilia-are-associated-with-fetal-growth-retardation-in-the-population-of-central-russia
#1
Evgeny Reshetnikov, Oksana Zarudskaya, Alexey Polonikov, Olga Bushueva, Valentina Orlova, Evgeny Krikun, Volodymyr Dvornyk, Mikhail Churnosov
AIM: The aim of this study was to examine the role of hereditary thrombophilia in the development of fetal growth retardation (FGR) in the population of Central Russia. METHODS: The case-control study sample included 497 women in the third trimester of pregnancy recruited during 2009-2013. The participants were enrolled into two groups: patients with FGR (n = 250) and controls without FGR (n = 247). The participants were genotyped for four genetic markers of hereditary thrombophilia: factor V Leiden (G > A FV, rs6025), prothrombin (G > A FII, rs1799963), factor VII (G > A FVII, rs6046), and fibrinogen (G > A FI, rs1800790)...
May 19, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28496540/recombinant-factor-viia-use-for-endoscopic-retrograde-cholangiopancreatography-with-sphincterotomy-in-a-patient-with-choledocholithiasis-and-unusual-coagulopathy
#2
Molham Abdulsamad, Pavithra Reddy, Suvarna Guvvala, Anil Dev
Endoscopic retrograde cholangiopancreatography (ERCP) is a procedure that combines the use of endoscopy and fluoroscopy to diagnose and treat pancreaticobiliary disorders. The risks of ERCP include pancreatitis, infection, bleeding and perforation. Bleeding during ERCP typically develops after sphincterotomy, hence patients should be screened and tested for coagulopathy before undergoing ERCP. Coagulopathy is a major risk factor for ERCP-related bleeding. Inherited factor VII (FVII) deficiency is a rare autosomal recessive hemorrhagic disorder that can lead to significant coagulopathy and severe bleeding if not appropriately recognized and treated preoperatively...
April 2017: Gastroenterology Research
https://www.readbyqxmd.com/read/28492702/low-plasma-fvii-c-and-activated-fvii-as-predictive-markers-for-overt-disseminated-intravascular-coagulation
#3
Surapong Lertthammakiat, Nattachai Anantasit, Usanarat Anurathapan, Nongnuch Sirachainan, Praguywan Kadegasem, Ampaiwan Chuansumrit
In sepsis, binding of factor VII (FVII:C) and activated factor VII (FVIIa) with tissue factor is the key step of coagulation resulting in disseminated intravascular coagulation (DIC). We conducted a prospective cohort study among 47 septic patients, aged 8 months to 18.8 years. They were initially divided into three groups of no DIC (n=27), non-overt DIC (n=14) and overt DIC (n=6). Blood samples were collected at 0, 24 and 48 hours (h) after the onset of sepsis. At the onset of sepsis, FVII:C tended to be lower in the non-overt DIC [median 57 % (interquartile range [IQR] 41-80)] and overt DIC groups [33 % (23-52)] than that in the no DIC group [65 % (44-87)]...
May 11, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28483635/crystal-structure-of-tissue-factor-in-complex-with-antibody-10h10-reveals-the-signaling-epitope
#4
Alexey Teplyakov, Galina Obmolova, Thomas J Malia, Bingyuan Wu, Yonghong Zhao, Susann Taudte, G Mark Anderson, Gary L Gilliland
Tissue factor (TF) initiates the extrinsic pathway of blood coagulation through sequential binding and activation of coagulation factors VII (FVII) and X (FX). In addition, through activation of G-protein-coupled protease activated receptors (PARs) TF induces cell signaling that is related to cancer, angiogenesis and inflammation. Monoclonal antibodies (mAbs) proved to be a useful tool for studying the interplay between TF signaling and coagulation. MAb 10H10 is unique in that it blocks the signaling pathway and thus inhibits angiogenesis and tumor growth without interfering with coagulation...
May 5, 2017: Cellular Signalling
https://www.readbyqxmd.com/read/28462681/warfarin-management-in-the-setting-of-fvii-deficiency-and-mechanical-circulatory-support
#5
Christin DeStefano, Katelyn Sylvester, Jean Connors, Farooq Sheikh, Joseph Catlett
No abstract text is available yet for this article.
April 1, 2017: Vascular Medicine
https://www.readbyqxmd.com/read/28447100/f7-gene-variants-modulate-protein-levels-in-a-large-cohort-of-patients-with-factor-vii-deficiency-results-from-a-genotype-phenotype-study
#6
Gabriele Quintavalle, Federica Riccardi, Gianna Franca Rivolta, Davide Martorana, Caterina Di Perna, Antonio Percesepe, Annarita Tagliaferri
Congenital factor VII (FVII) deficiency is a rare bleeding disorder caused by mutations in F7 gene with autosomal recessive inheritance. A clinical heterogeneity with poor correlation with FVII:C levels has been described. It was the objective of this study to identify genetic defects and to evaluate their relationships with phenotype in a large cohort of patients with FVII:C<50 %. One hundred twenty-three probands were genotyped for F7 mutations and three polymorphic variants and classified according to recently published clinical scores...
April 27, 2017: Thrombosis and Haemostasis
https://www.readbyqxmd.com/read/28440004/safety-and-effectiveness-of-room-temperature-stable-recombinant-factor-viia-in-patients-with-haemophilia-a-or-b-and-inhibitors-results-of-a-multinational-prospective-observational-study
#7
K Kavakli, F Demartis, M Karimi, P Eshghi, D Neme, H Chambost, L Sommer, M Zak, G Benson
INTRODUCTION: A room temperature stable formulation of recombinant activated factor VII (NovoSeven(®) ), allowing convenient storage and therefore improved treatment access, has been developed. Bioequivalence to the previous NovoSeven(®) was demonstrated in healthy humans, leading to European approval (2008). Although no confirmed cases of neutralising antibodies to rFVIIa in patients with haemophilia A or B have been observed with the original formulation, changes in formulation or storage condition may alter immunogenicity...
April 24, 2017: Haemophilia: the Official Journal of the World Federation of Hemophilia
https://www.readbyqxmd.com/read/28430802/the-quality-changes-in-fresh-frozen-plasma-of-the-blood-donors-at-high-altitude
#8
Zongkui Wang, Hua Liu, Miaomiao Dou, Xi Du, Jijun Hu, Na Su, Ya Wang, Rong Zhang, Changqing Li
OBJECTIVE: According to the international guidelines, fresh frozen plasma (FFP) is unanimously used to treat coagulation disorders. The quality of FFP is critical for the clinical transfusion. Till now, few studies have integratedly evaluated the differences of FFP from blood donors at between high altitude (HA) and low altitude (LA). Besides, there were no special quality standards for HA FFP in China. MATERIALS AND METHODS: Up to 41 HA (Lhasa, 3700 m) and 46 LA (Chengdu, 500 m) blood donors were included in our study to estimate the differences of FFP from HA and LA blood donors...
2017: PloS One
https://www.readbyqxmd.com/read/28417928/potential-coagulation-factor-driven-pro-inflammatory-responses-in-ovarian-cancer-tissues-associated-with-insufficient-o%C3%A2-and-plasma-supply
#9
REVIEW
Shiro Koizume, Yohei Miyagi
Tissue factor (TF) is a cell surface receptor for coagulation factor VII (fVII). The TF-activated fVII (fVIIa) complex is an essential initiator of the extrinsic blood coagulation process. Interactions between cancer cells and immune cells via coagulation factors and adhesion molecules can promote progression of cancer, including epithelial ovarian cancer (EOC). This process is not necessarily advantageous, as tumor tissues generally undergo hypoxia due to aberrant vasculature, followed by reduced access to plasma components such as coagulation factors...
April 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28409836/platelet-derived-microparticles-regulates-thrombin-generation-via-phophatidylserine-in-abdominal-sepsis
#10
Yongzhi Wang, Su Zhang, Lingtao Luo, Eva Norström, Oscar Ö Braun, Matthias Mörgelin, Henrik Thorlacius
Sepsis is associated with dysfunctional coagulation. Recent data suggest that platelets play a role in sepsis by promoting neutrophil accumulation. Herein, we show that cecal ligation and puncture (CLP) triggered systemic inflammation, which is characterized by formation of IL-6 and CXC chemokines as well as neutrophil accumulation in the lung. Platelet depletion decreased neutrophil accumulation, IL-6 and CXC chemokines formation in septic lungs. Depletion of platelets increased peak thrombin formation and total thrombin generation (TG) in plasma from septic animals...
April 14, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/28407450/finding-the-optimal-dose-of-vitamin-k1-to-treat-vitamin-k-deficiency-and-to-avoid-anaphylactoid-reactions
#11
Yan-Ni Mi, Na-Na Ping, Bo Li, Xue Xiao, Yan-Bing Zhu, Lei Cao, Jian-Kang Ren, Yong-Xiao Cao
Vitamin K1 injection induces severe dose-related anaphylactoid reactions and overdose for the treatment of vitamin K deficiency. We aimed to find an optimal and small dose of vitamin K1 injection to treat vitamin K deficiency and avoid anaphylactoid reactions in animal. Rats were administered a vitamin K-deficient diet and gentamicin to establish vitamin K deficiency model. Behaviour tests were performed in beagle dogs to observe anaphylactoid reactions. The results showed an increased protein induced by vitamin K absence or antagonist II (PIVKA-II) levels, a prolonging of prothrombin time (PT) and activated partial thromboplastin time (APTT) and a decrease in vitamin K-dependent coagulation factor (F) II, VII, IX and X activities in the model group...
April 13, 2017: Fundamental & Clinical Pharmacology
https://www.readbyqxmd.com/read/28302935/factor-x-deficiency-with-heterozygous-mutations-of-novel-p-g435s-and-known-p-g244r-in-a-patient-presenting-with-severe-umbilical-hemorrhage
#12
Yoko Matsuo, Tatsuki Mizuochi, Miho Mitsuo, Shinichiro Nakagawa, Shuichi Ozono, Koichiro Ueda, Yoko Sogabe, Ritsuko Seki, Kenji Soejima, Takashi Okamura, Yushiro Yamashita
A 10-day-old male patient was referred to our hospital with severe umbilical bleeding. Prothrombin time (PT) and activated partial thromboplastin time (APTT) were prominently prolonged. Plasma coagulation factor X (FX) activity and antigen levels were 1% and 0.6%, respectively. A DNA sequence analysis of his leukocytes revealed a compound heterozygous state; known Gly244 to Arg (p.G244R) in exon 6 and a novel mutation of Gly 435 to Ser (p.G435S) in exon 8. A pedigree analysis showed that p.G244R originated from the paternal side, while p...
March 15, 2017: Kurume Medical Journal
https://www.readbyqxmd.com/read/28263027/coagulation-factors-anticoagulant-proteins-and-plasminogen-in-mexican-older-adults
#13
E Hernández Zamora, L O González-Espinosa, C Zavala-Hernández, E Rosales-Cruz, E Reyes-Maldonado
INTRODUCTION: Hemostasis protects upon the occurrence of vascular endothelial damage, with involving of different factors. The interaction of these factors in older adults is poorly known, and has been associated with different disorders. Therefore, we determined the activity of coagulation factors (CF), anticoagulant proteins (AP), and plasminogen (Plg), as well as the frequency of deficiencies of these proteins in a population of healthy Mexican older adults (OA). METHODS: CF (I, II, V, VII, VIII, IX, X, and XI y XII), AP [protein C (PC), protein S (PS), and antithrombin (AT)], and Plg were determined from 244 plasma samples of OA using commercial kits in a coagulometer ACL Elite Pro...
March 6, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28223242/fviia-prevents-the-progressive-hemorrhaging-of-a-brain-contusion-by-protecting-microvessels-via-formation-of-the-tf-fviia-fxa-complex
#14
Qiang Yuan, Dalong Zhang, Sirong Wu, Jian Yu, Lei Yu, Yirui Sun, Zhuoying Du, Zhiqi Li, Liangfu Zhou, Xing Wu, Jin Hu
Factor VII (FVII) plays a key role in the initiation of the coagulation cascade and, in clinical situations, recombinant human activated FVII (rFVIIa) effectively prevents progressive hemorrhaging after a brain contusion. However, it remains unclear whether decreases in FVII activity directly lead to progressive hemorrhaging and, moreover, the precise mechanisms underlying this process are not yet known. The present study demonstrated that decreased FVII activity directly led to progressive hemorrhaging of the cerebral contusions...
February 20, 2017: Neuroscience
https://www.readbyqxmd.com/read/28222949/rare-bleeding-disorders-old-diseases-in-the-era-of-novel-options-for-therapy
#15
Tami Livnat, Assaf Arie Barg, Sarina Levy-Mendelovich, Gili Kenet
Rare diseases are defined as life-threatening or chronically debilitating diseases with a prevalence of less than one per 2000 according to the European Union or one per 1250 according to the USA. Congenital rare bleeding disorders RBD are reported in most populations, with incidence varying from 1 in 5000 (Hemophilia A), 1:30,000 (Hemophilia B) to much rarer (1:500,000 for FVII deficiency, 1-3 million for Prothrombin or FXIII deficiency). Acquired Hemophilia A is also a rare bleeding disorder with estimated frequency of 1 in million...
February 14, 2017: Blood Cells, Molecules & Diseases
https://www.readbyqxmd.com/read/28219621/topical-application-of-recombinant-activated-factor-vii-during-cesarean-delivery-for-placenta-previa
#16
Birgit T B G Schjoldager, Emmeli Mikkelsen, Malene R Lykke, Jørgen Præst, Anne-Mette Hvas, Lars Heslet, Niels J Secher, Jannie D Salvig, Niels Uldbjerg
BACKGROUND: During cesarean delivery in patients with placenta previa, hemorrhaging after removal of the placenta is often challenging. In this condition, the extraordinarily high concentration of tissue factor at the placenta site may constitute a principle of treatment as it activates coagulation very effectively. The presumption, however, is that tissue factor is bound to activated factor VII. OBJECTIVE: We hypothesized that topical application of recombinant activated factor VII at the placenta site reduces bleeding without affecting intravascular coagulation...
February 20, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28195355/factor-vii-and-incidence-of-myocardial-infarction-in-a-japanese-population-the-jichi-medical-school-cohort-study
#17
Takuya Shiraishi, Shizukiyo Ishikawa, Kazuomi Kario, Kazunori Kayaba, Eiji Kajii
BACKGROUND: The role of factor VII (FVII) as a risk factor in myocardial infarction (MI) has been the subject of numerous studies. However, it remains uncertain whether the FVII levels are associated with development of MI. METHODS: The subjects were 4142 men and women whose activated FVII (FVIIa) and FVII coagulant (FVIIc) levels were measured in the Jichi Medical School Cohort Study. Subjects were divided into tertiles by FVIIa and FVIIc levels, and Cox's proportional hazard model was used to calculate hazard ratios (HRs) for MI...
February 13, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28191640/pathogen-safety-of-a-pasteurized-four-factor-human-prothrombin-complex-concentrate-preparation-using-serial-20n-virus-filtration
#18
Thomas Nowak, Birgit Popp, Albrecht Gröner, Wolfram Schäfer, Uwe Kalina, Karlheinz Enssle, Nathan J Roth
BACKGROUND: Beriplex P/N/Kcentra/Coaplex/Confidex is a four-factor human prothrombin complex concentrate (PCC). Here, we describe the pathogen safety profile and biochemical characteristics of an improved manufacturing process that further enhances the virus safety of Beriplex P/N. STUDY DESIGN AND METHODS: Samples of product intermediates were spiked with test viruses, and prions were evaluated under routine production and robustness conditions of the scale-down version of the commercial manufacturing process for their capacity to inactivate or remove pathogens...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28179291/synergistic-inhibitory-effect-of-traditional-chinese-medicine-astragaloside-iv-and-curcumin-on-tumor-growth-and-angiogenesis-in-an-orthotopic-nude-mouse-model-of-human-hepatocellular-carcinoma
#19
Shuo Zhang, Decai Tang, Wenhua Zang, Gang Yin, Jianguo Dai, Y U Sun, Zhijian Yang, Robert M Hoffman, Xiuxia Guo
AIM: The aim of the present study was to investigate the efficacy of the traditional Chinese medicine (TCM), astragaloside IV (AS-IV) and curcumin on tumor growth and angiogenesis in an orthotopic nude-mouse model of human hepatocellular carcinoma (HCC). We have previously shown the usefulness of orthotopic models of human cancer for evaluation of the efficacy of TCM. MATERIALS AND METHODS: Nude mice with orthotopic HepG2 HCC were treated with vehicle control (0...
2017: Anticancer Research
https://www.readbyqxmd.com/read/28176610/bleeding-manifestations-in-heterozygotes-with-congenital-fvii-deficiency-a-comparison-with-unaffected-family-members-during-a-long-observation-period
#20
Antonio Girolami, Elisabetta Cosi, Silvia Ferrari, Bruno Girolami, Anna Maria Lombardi
OBJECTIVES: To determine whether heterozygotes with FVII deficiency have a bleeding tendency or not. PATIENTS AND METHODS: Eighty-four patients (OK) heterozygous for FVII deficiency, at the onset of the study, were paired with unaffected family members and followed for a long period of time (mean 22.6 years) for the occurrence of bleeding. Diagnosis of heterozygosis had to be based on family studies, clotting, immunological assays and genetic analysis. RESULTS: The mean FVII activity level was 0...
February 8, 2017: Hematology (Amsterdam, Netherlands)
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