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https://www.readbyqxmd.com/read/29147558/discovery-and-design-of-self-assembling-peptides
#1
REVIEW
Shuguang Zhang
Peptides are ubiquitous in nature and useful in many fields, from agriculture as pesticides, in medicine as antibacterial and antifungal drugs founded in the innate immune systems, to medicinal chemistry as hormones. However, the concept of peptides as materials was not recognized until 1990 when a self-assembling peptide as a repeating segment in a yeast protein was serendipitously discovered. Peptide materials are so called because they have bona fide materials property and are made from simple amino acids with well-ordered nanostructures under physiological conditions...
December 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/29139025/coagulopathy-in-zellweger-spectrum-disorders-a-role-for-vitamin-k
#2
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/29138114/the-%C3%AE-1-3-fucosyltransferase-fut7-regulates-il-1%C3%AE-induced-monocyte-endothelial-adhesion-via-fucosylation-of-endomucin
#3
Jun Zhang, Nana Ju, Xi Yang, Linmu Chen, Chao Yu
Monocyte-endothelial adhesion is a hallmark feature of atherosclerosis at early stage and emerging evidence suggests that the glycosylation of vascular adhesive molecules and its ligands is involved in this process. Nevertheless, the mechanism underlying this process remains incompletely elucidated. In this study, we reported that treatment with inflammatory factors interleukin-1β (IL-1β) pronouncedly upregulated α1,3-fucosyltransferase VII gene (FUT7) mRNA and protein expression level in EA.hy926 endothelial cells...
November 11, 2017: Life Sciences
https://www.readbyqxmd.com/read/29132165/ivh-in-vlbw-preterm-babies-therapy-with-recombinant-activated-f-vii
#4
Matthias Knüpfer, Jenny Ritter, Ferdinand Pulzer, Corinna Gebauer, Nadine Wolf, Anett Bläser, Jens Dreyhaupt, Ulrich Thome
Backround Intraventricular hemorrhage (IVH) remains a dangerous and frequent complication in very low birth weight (VLBW) infants. Activated factor VII (aFVII) activates the coagulation cascade and is a potential tool for stopping active bleeding, including limiting the extent of an IVH. This retrospective treatment observation compared data for infants with IVH progression treated with fresh frozen plasma (FFP) alone or with a combination of FFP and aFVII. Methods/Intervention All infants were subject to cranial ultrasonography at least twice daily...
November 2017: Klinische Pädiatrie
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/29112333/associations-of-activated-coagulation-factor-vii-and-factor-viia-antithrombin-levels-with-genome-wide-polymorphisms-and-cardiovascular-disease-risk
#6
N C Olson, L M Raffield, L A Lange, E M Lange, W T Longstreth, G Chauhan, S Debette, S Seshadri, A P Reiner, R P Tracy
BACKGROUND: A fraction of coagulation factor VII circulates as an active protease (FVIIa). FVIIa also circulates as an inactivated complex with antithrombin (FVIIa-AT). OBJECTIVE: Evaluate associations of FVIIa and FVIIa-AT with genome-wide single nucleotide polymorphisms (SNPs) and incident coronary heart disease, ischemic stroke, and mortality. PATIENTS/METHODS: We measured FVIIa and FVIIa-AT in 3,486 Cardiovascular Health Study (CHS) participants...
November 7, 2017: Journal of Thrombosis and Haemostasis: JTH
https://www.readbyqxmd.com/read/29111325/inhibition-of-tissue-factor-signaling-in-breast-tumour-xenografts-induces-widespread-changes-in-the-microrna-expression-profile
#7
Esterina D'Asti, G Mark Anderson, Janusz Rak
Tissue factor (TF) is a transmembrane receptor for coagulation factor VII/VIIa that is frequently overexpressed by cancer cells. The TF/VIIa complex acts as the main initiator of the clotting cascade in blood and a trigger of intracellular signaling that changes gene expression and the cellular phenotype. However, pathways mediating these changes are still poorly characterized and especially the impact of TF signals on regulatory microRNA (miR) networks in cancer remains unknown. We show that the monoclonal antibody that selectively neutralises the signaling (but not coagulant) function of human TF (CNTO 2559) inhibits progression of MDA-MB-231 breast cancer xenografts in mice and prolongs animal survival...
October 27, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29108665/evaluation-of-a-polyvalent-foot-and-mouth-disease-virus-vaccine-containing-a-saudi-95-against-field-challenge-on-large-scale-dairy-farms-in-saudi-arabia-with-the-emerging-a-asia-g-vii-viral-lineage
#8
Nicholas A Lyons, Anna B Ludi, Ginette Wilsden, Pip Hamblin, Ibrahim Ahmed Qasim, Simon Gubbins, Donald P King
In 2015, foot-and-mouth disease (FMD) viruses of the A/ASIA/G-VII lineage emerged from the Indian sub-continent to cause outbreaks in the Middle and Near East. A factor which has been proposed to have contributed to the rapid spread of this lineage is the poor in vitro vaccine-match of field isolates to vaccine strains that are commonly used in the region. This study used data from outbreaks on four large-scale dairy farms using routine vaccination in Saudi Arabia, to evaluate the impact of vaccination and learn how to manage outbreaks more effectively in this setting...
November 3, 2017: Vaccine
https://www.readbyqxmd.com/read/29104756/factor-vii-deficiency-a-novel-missense-variant-and-genotype-phenotype-correlation-in-patients-from-southern-italy
#9
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/29104209/pseudane-vii-isolated-from-pseudoalteromonas-sp-m2-ameliorates-lps-induced-inflammatory-response-in-vitro-and-in-vivo
#10
Mi Eun Kim, Inae Jung, Jong Suk Lee, Ju Yong Na, Woo Jung Kim, Young-Ok Kim, Yong-Duk Park, Jun Sik Lee
The ocean is a rich resource of flora, fauna, food, and biological products. We found a wild-type bacterial strain, Pseudoalteromonas sp. M2, from marine water and isolated various secondary metabolites. Pseudane-VII is a compound isolated from the Pseudoalteromonas sp. M2 metabolite that possesses anti-melanogenic activity. Inflammation is a response of the innate immune system to microbial infections. Macrophages have a critical role in fighting microbial infections and inflammation. Recent studies reported that various compounds derived from natural products can regulate immune responses including inflammation...
November 1, 2017: Marine Drugs
https://www.readbyqxmd.com/read/29102389/coronary-artery-stenosis-treatment-in-aging-patients-with-inherited-factor-vii-deficiency-where-do-we-stand
#11
Mariasanta Napolitano, Sergio Siragusa
Aging with rare bleeding disorders such as factor VII (FVII) deficiency poses several challenges to treatment because of the occurrence of cerebral and cardiovascular age-related comorbidities and high bleeding risks. We report a case of long-term treatment with antiplatelet agents and contemporary prophylaxis of bleeding in a woman affected by severe FVII deficiency diagnosed with symptomatic coronary artery stenosis. Information on the management of antithrombotic treatment in rare bleeding disorders is lacking and mainly limited to anecdotal reports or side effects secondary to replacement therapy...
November 1, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29099345/coagulation-management-during-liver-transplantation-use-of-fibrinogen-concentrate-recombinant-activated-factor-vii-prothrombin-complex-concentrate-and-antifibrinolytics
#12
Jonathan H Chow, Khang Lee, Ezeldeen Abuelkasem, Obi R Udekwu, Kenichi A Tanaka
Coagulation management, and transfusion practice in liver transplantation (LT) have been evolving in the recent years due to better understanding of coagulation abnormalities in end-stage liver disease, and clinical management of LT patients. Avoidance of allogeneic blood components is feasible in some patients, but multi-modal coagulation therapies may be necessary in others who develop complex coagulopathy due to hemorrhage, hemodilution, hypothermia, and acid-base disturbances. Transfusions of plasma and cryoprecipitate remain to be the mainstay therapy for procoagulant factor replacement during LT...
November 1, 2017: Seminars in Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29097994/benefits-of-genomic-insights-and-crispr-cas-signatures-to-monitor-potential-pathogens-across-drinking-water-production-and-distribution-systems
#13
Ya Zhang, Masaaki Kitajima, Andrew J Whittle, Wen-Tso Liu
The occurrence of pathogenic bacteria in drinking water distribution systems (DWDSs) is a major health concern, and our current understanding is mostly related to pathogenic species such as Legionella pneumophila and Mycobacterium avium but not to bacterial species closely related to them. In this study, genomic-based approaches were used to characterize pathogen-related species in relation to their abundance, diversity, potential pathogenicity, genetic exchange, and distribution across an urban drinking water system...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29091393/a-positively-charged-surface-triggers-coagulation-activation-through-factor-vii-activating-protease-fsap
#14
Claudia Sperling, Manfred F Maitz, Simona Grasso, Carsten Werner, Sandip Kanse
Contact between biomedical materials and blood often initiates undesirable pro-coagulant and pro-inflammatory processes. On negatively charged materials blood coagulation is known to be triggered through auto-activation of Factor XII, while activation on cationic surfaces follows a distinct and so far enigmatic mechanism. As Factor VII activating protease (FSAP), is known to be activated on positively and on negatively charged macromolecules in plasma, we have investigated its interaction with charged biomaterials and its consequences for coagulation...
November 1, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29073536/intensive-care-unit-drug-costs-in-the-context-of-total-hospital-drug-expenditures-with-suggestions-for-targeted-cost-containment-efforts
#15
Shoroq M Altawalbeh, Melissa I Saul, Amy L Seybert, Joshua M Thorpe, Sandra L Kane-Gill
PURPOSE: To assess costs of intensive care unit (ICU) related pharmacotherapy relative to hospital drug expenditures, and to identify potential targets for cost-effectiveness investigations. We offer the unique advantage of comparing ICU drug costs with previously published data a decade earlier to describe changes over time. MATERIALS AND METHODS: Financial transactions for all ICU patients during fiscal years (FY) 2009-2012 were retrieved from the hospital's data repository...
October 19, 2017: Journal of Critical Care
https://www.readbyqxmd.com/read/29064153/comparison-of-albumin-colloid-osmotic-pressure-von-willebrand-factor-and-coagulation-factors-in-canine-cryopoor-plasma-cryoprecipitate-and-fresh-frozen-plasma
#16
Christine A Culler, Cristina Iazbik, Julien Guillaumin
OBJECTIVE: To compare albumin concentrations, coagulation factors activity, and colloid osmotic pressure (COP) of cryoprecipitate (CRYO) and cryopoor plasma (CPP) to that of source fresh frozen plasma (FFP). DESIGN: Prospective in vitro study. SETTING: University teaching hospital. ANIMALS: Ten healthy, non-Greyhound dogs enrolled in an academic teaching hospital blood donor program. INTERVENTIONS: Fresh blood was obtained from canine blood donors and separated into FFP and packed red blood cells...
October 24, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/29051804/review-of-recombinant-anti-haemophilic-porcine-sequence-factor-viii-in-adults-with-acquired-haemophilia-a
#17
REVIEW
Emma Fosbury, Anja Drebes, Anne Riddell, Pratima Chowdary
Acquired haemophilia A (AHA) is a rare, serious bleeding disorder most often encountered in elderly patients. The mainstay of haemostatic management is with bypassing agents (BPAs) including recombinant activated factor VII (rFVIIa) and activated prothrombin complex concentrates (aPCCs). Their major limitation is incomplete efficacy, potential risk for thrombosis and the lack of routine laboratory assays for monitoring treatment response. Plasma-derived porcine FVIII (pd-pFVIII, Hyate C(®)), first used in the 1950s for the management of congenital haemophilia, has sufficient sequence homology to be haemostatic in humans, but the lack of complete homology facilitates efficacy even in the presence of human allo- and autoantibodies against human FVIII (hFVIII)...
September 2017: Therapeutic Advances in Hematology
https://www.readbyqxmd.com/read/29035733/how-does-parental-cancer-affect-adolescent-and-young-adult-offspring-a-systematic-review
#18
REVIEW
Adam Walczak, Fiona McDonald, Pandora Patterson, Katherine Dobinson, Kimberley Allison
OBJECTIVES: To i) identify and synthesise evidence published since 2007 regarding the impact of parental cancer on adolescent and young adult offspring, ii) identify methodological and evidence gaps addressed during this period and iii) highlight those requiring further attention. DESIGN: A systematic review and thematic synthesis of peer reviewed literature regarding the impact of parental cancer upon AYA offspring. DATA SOURCES: Online searches of CINAHL, Embase, Medline, PsychInfo and Scopus databases were conducted...
September 1, 2017: International Journal of Nursing Studies
https://www.readbyqxmd.com/read/29035661/outcome-of-laparoscopic-ovariohysterectomy-or-ovariectomy-in-dogs-with-von-willebrand-disease-or-factor-vii-deficiency-20-cases-2012-2014
#19
Thomas P Keeshen, J Brad Case, Jeffrey J Runge, Ameet Singh, Philipp D Mayhew, Michele A Steffey, William T N Culp
OBJECTIVE To describe surgical techniques and perioperative management of dogs with von Willebrand disease (VWD) or factor VII (FVII) deficiency undergoing laparoscopic ovariohysterectomy or ovariectomy and evaluate outcomes. DESIGN Retrospective case series. ANIMALS 20 client-owned dogs with VWD (n = 16) or FVII deficiency (4). PROCEDURES Dogs with VWD or FVII deficiency that underwent laparoscopic ovariohysterectomy or ovariectomy between 2012 and 2014 were retrospectively identified via a multi-institutional review of medical records...
November 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/29033328/the-cys-arg-n-end-rule-pathway-is-a-general-sensor-of-abiotic-stress-in-flowering-plants
#20
Jorge Vicente, Guillermina M Mendiondo, Mahsa Movahedi, Marta Peirats-Llobet, Yu-Ting Juan, Yu-Yen Shen, Charlene Dambire, Katherine Smart, Pedro L Rodriguez, Yee-Yung Charng, Julie E Gray, Michael J Holdsworth
Abiotic stresses impact negatively on plant growth, profoundly affecting yield and quality of crops. Although much is known about plant responses, very little is understood at the molecular level about the initial sensing of environmental stress. In plants, hypoxia (low oxygen, which occurs during flooding) is directly sensed by the Cys-Arg/N-end rule pathway of ubiquitin-mediated proteolysis, through oxygen-dependent degradation of group VII Ethylene Response Factor transcription factors (ERFVIIs) via amino-terminal (Nt-) cysteine [1, 2]...
October 23, 2017: Current Biology: CB
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