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Fibrinogen Concentrate

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https://www.readbyqxmd.com/read/28819722/carbon-and-amide-detect-backbone-assignment-methods-of-a-novel-repeat-protein-from-the-staphylocoagulase-in-s-aureus
#1
Markus Voehler, Maddur Appajaiah Ashoka, Jens Meiler, Paul E Bock
The C-terminal repeat domain of staphylocoagulase that is secreted by the S. aureus is believed to play an important role interacting with fibrinogen and promotes blood clotting. To study this interaction by NMR, full assignment of each amide residue in the HSQC spectrum was required. Despite of the short sequence of the repeat construct, the HSQC spectrum contained a substantial amount of overlapped and exchange broadened resonances, indicating little secondary or tertiary structure. This caused severe problems while using the conventional, amide based NMR method for the backbone assignment...
August 17, 2017: Biomolecular NMR Assignments
https://www.readbyqxmd.com/read/28803752/optimal-dose-timing-and-ratio-of-blood-products-in-massive-transfusion-results-from-a-systematic-review
#2
REVIEW
Zoe K McQuilten, Gemma Crighton, Susan Brunskill, Jessica K Morison, Tania H Richter, Neil Waters, Michael F Murphy, Erica M Wood
Optimal dose, timing and ratio to red blood cells (RBC) of blood component therapy (fresh frozen plasma [FFP], platelets, cryoprecipitate or fibrinogen concentrate) to reduce morbidity and mortality in critically bleeding patients requiring massive transfusion is unknown. We performed a systematic review for randomized controlled trials (RCT) in MEDLINE, The Cochrane Library, Embase, CINAHL, PubMed the Transfusion Evidence Library and using multiple clinical trials registries to 21 February 2017. Sixteen RCTs were identified: six completed (five in adult trauma patients, one pediatric burn patients) and ten ongoing trials...
July 6, 2017: Transfusion Medicine Reviews
https://www.readbyqxmd.com/read/28803516/well-defined-protein-immobilization-on-photo-responsive-phosphorylcholine-polymer-surfaces
#3
Masako Tanaka, Shugo Kawai, Yasuhiko Iwasaki
In this study, we propose a new polymer substrate that is able to covalently couple intended proteins and reduce nonspecific protein fouling. Poly[2-methacryloyloxyethyl phosphorylcholine (MPC)-ran-N-methacryloyl-(L)-tyrosinemethylester (MAT)] [P(MPC/MAT)] was synthesized by free-radical polymerization. The photooxidation of the MAT unit in the copolymer was observed under ultraviolet (UV) light at 254 nm. P(MPC/MAT) was spin-coated on silicon (Si) and gold substrates. Without UV irradiation of the polymer-coated surface, P(MPC/MAT) physisorbed on the substrates, and the thickness of the polymer layer was less than 10 nm, regardless of the polymer concentration in the coating solution...
August 14, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28801570/the-buckling-instability-of-aggregating-red-blood-cells
#4
Daniel Flormann, Othmane Aouane, Lars Kaestner, Christian Ruloff, Chaouqi Misbah, Thomas Podgorski, Christian Wagner
Plasma proteins such as fibrinogen induce the aggregation of red blood cells (RBC) into rouleaux, which are responsible for the pronounced shear thinning behavior of blood, control the erythrocyte sedimentation rate (ESR) - a common hematological test - and are involved in many situations of physiological relevance such as structuration of blood in the microcirculation or clot formation in pathological situations. Confocal microscopy is used to characterize the shape of RBCs within rouleaux at equilibrium as a function of macromolecular concentration, revealing the diversity of contact zone morphology...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28800150/heterozygosity-for-p2y12-receptor-gene-mutation-associated-with-postoperative-hemorrhage-in-a-greater-swiss-mountain-dog
#5
Rebecca S Flores, Mary K Boudreaux, Barbara Vasquez, Poppy Bristow, Lillian R Aronson, Kari Santoro-Beer, Mary Beth Callan
A 3-year-old, female Greater Swiss Mountain dog developed a hemoperitoneum following an exploratory laparotomy and ovariohysterectomy. Platelet count, PT, APTT, and plasma von Willebrand factor antigen concentration were within RIs. A buccal mucosal bleeding time (BMBT) was prolonged. Given the probability of a hereditary thrombopathia, the dog was administered desmopressin, fresh platelet transfusions, and aminocaproic acid to control hemorrhage. Subsequently, DNA testing for the P2Y12 receptor gene mutation identified the dog as being a heterozygote (carrier)...
August 11, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28781892/inflammatory-markers-are-positively-associated-with-serum-trans-fatty-acids-in-an-adult-american-population
#6
Mohsen Mazidi, Hong-Kai Gao, Andre Pascal Kengne
BACKGROUND AND AIM: The relationship between serum trans-fatty acids (TFAs) and systemic inflammation markers is unclear. We investigated the association of serum TFAs with high sensitivity C-reactive protein (hs-CRP) and fibrinogen in adult Americans. METHODS: The 1999 to 2000 National Health and Nutrition Examination Survey (NHANES) participants with measured data on hs-CRP and fibrinogen were included. TFAs were measured via capillary gas chromatography and mass spectrometry using negative chemical ionization...
2017: Journal of Nutrition and Metabolism
https://www.readbyqxmd.com/read/28772927/collagen-fibrinogen-lyophilised-scaffolds-for-soft-tissue-regeneration
#7
Jennifer Shepherd, Daniel Bax, Serena Best, Ruth Cameron
A significant body of research has considered collagen as a scaffold material for soft tissue regeneration. The main structural component of extra-cellular matrix (ECM), collagen's advantages over synthetic polymers are numerous. However, for applications where higher stiffness and stability are required, significant cross-linking may affect bioactivity. A carbodiimide (EDC) cross-linking route consumes carboxylate groups that are key to collagen's essential cell recognition motifs (GxOGER). Fibrinogen was considered as a promising additive as it plays a key role in the process of wound repair and contains RGD integrin binding sites which bind to a variety of cells, growth factors and cytokines...
May 23, 2017: Materials
https://www.readbyqxmd.com/read/28771557/low-moderate-urine-arsenic-and-biomarkers-of-thrombosis-and-inflammation-in-the-strong-heart-study
#8
Katherine A Moon, Ana Navas-Acien, Maria Grau-Pérez, Kevin A Francesconi, Walter Goessler, Eliseo Guallar, Jason G Umans, Lyle G Best, Jonathan D Newman
The underlying pathology of arsenic-related cardiovascular disease (CVD) is unknown. Few studies have evaluated pathways through thrombosis and inflammation for arsenic-related CVD, especially at low-moderate arsenic exposure levels (<100 μg/L in drinking water). We evaluated the association of chronic low-moderate arsenic exposure, measured as the sum of inorganic and methylated arsenic species in urine (ΣAs), with plasma biomarkers of thrombosis and inflammation in American Indian adults (45-74 years) in the Strong Heart Study...
2017: PloS One
https://www.readbyqxmd.com/read/28766891/influences-of-argatroban-on-five-fibrinogen-assays
#9
L Zhang, J Yang, X Zheng, Q Fan, Z Zhang
INTRODUCTION: Argatroban, as a direct thrombin inhibitor, prolongs the clotting time. However, detection of clotting time is the base of routine fibrinogen assays, including Clauss method and derived method. The influences of argatroban on fibrinogen assays are still unclear. METHODS: Normal pooled plasma (NPP) from 20 healthy subjects was spiked with increasing argatroban concentrations (0-3.2 μg/mL). Then the NPP samples were analyzed by five fibrinogen assays: HemosIL Fibrinogen-C XL reagent (Clauss method) on ACL-TOP; STA-Fibrinogen reagent (Clauss method) on STA-R Evolution; Siemens Thrombin reagent (Clauss method) on CS-5100; SynthASil RecombiPlasTin 2G reagent (PT-derived method) on ACL-TOP; and N Antiserum to Human Fibrinogen reagent (NAHF, Immunoassay) on BN2 nephelometer analyzer...
August 2, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28765691/fibrinogen-deficiency-suppresses-the-development-of-early-and-delayed-radiation-enteropathy
#10
Junru Wang, Rupak Pathak, Sarita Garg, Martin Hauer-Jensen
AIM: To determine the mechanistic role of fibrinogen, a key regulator of inflammation and fibrosis, in early and delayed radiation enteropathy. METHODS: Fibrinogen wild-type (Fib(+/+)), fibrinogen heterozygous (Fib(+/-)), and fibrinogen knockout (Fib(-/-)) mice were exposed to localized intestinal irradiation and assessed for early and delayed structural changes in the intestinal tissue. A 5-cm segment of ileum of mice was exteriorized and exposed to 18.5 Gy of x-irradiation...
July 14, 2017: World Journal of Gastroenterology: WJG
https://www.readbyqxmd.com/read/28765353/hemostatic-management-of-trauma-induced-coagulopathy
#11
Janise B Phillips, Phillip L Mohorn, Rebecca E Bookstaver, Tanya O Ezekiel, Christopher M Watson
Trauma-induced coagulopathy is a primary factor in many trauma-related fatalities. Management hinges upon rapid diagnosis of coagulation abnormalities and immediate administration of appropriate hemostatic agents. Use of crystalloids and packed red blood cells has traditionally been the core of trauma resuscitation, but current massive transfusion protocols include combination therapy with fresh frozen plasma and predefined ratios of platelets to packed red blood cells, limiting crystalloid administration. Hemostatic agents such as tranexamic acid, prothrombin complex concentrate, fibrinogen concentrate, and, in cases of refractory bleeding, recombinant activated factor VIIa may also be warranted...
August 2017: Critical Care Nurse
https://www.readbyqxmd.com/read/28764076/a-sensitive-hplc-ms-ms-method-for-the-simultaneous-detection-of-microbial-transglutaminase-and-bovine-and-porcine-fibrinogen-thrombin-in-restructured-meat
#12
Wolfgang Jira, Fredi Schwägele
A sensitive HPLC-MS/MS method for the simultaneous detection of microbial transglutaminase (TG) from Streptomyces mobaraensis, and bovine and porcine fibrinogen/thrombin in restructured meat was developed using tryptic marker peptides of TG (five markers), and bovine and porcine fibrinogen (six markers each). Meat binding experiments with beef and pork were performed using a technical TG mixture (Activa, Ajinomoto), and bovine and porcine plasmapowder FG (PPFG; Sonac B.V.). The method developed allows the simultaneous detection of the use of these cold-set binders in raw and heated samples...
December 15, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28762905/-atrial-fibrillation-after-coronary-artery-bypass-grafting
#13
O A Rubanenko, O V Fatenkov, S M Khokhlunov, L V Limareva
PURPOSE: to identify the role of factors of inflammation and myocardial ischemia in the development of atrial fibrillation (AF) in the early postoperative period after coronary artery bypass grafting (CABG). METHODS: We enrolled in this study 96 patients with ischemic heart disease who had undergone CABG. Patients were divided into 2 groups: (1) without postoperative AF (n=67, 80.6% men, mean age 57.9+/-7.3 years), (2) with early new-onset AF after CABG (n=29, 86% men, mean age 64...
April 2017: Kardiologiia
https://www.readbyqxmd.com/read/28762895/encapsulation-of-equine-ecfcs-in-highly-uniform-injectable-hydrogel-microspheres-for-local-cell-delivery
#14
Wen J Seeto, Yuan Tian, Randolph L Winter, Fred J Caldwell, Anne A Wooldridge, Elizabeth Ann Lipke
A common challenge in cell therapy is the inability to routinely maintain survival and localization of injected therapeutic cells. Delivering cells by direct injection increases the flexibility of clinical applications, but may cause low cell viability and retention rates due to the high shear force by the needle and mechanical wash out. In this study, we present a custom-built microfluidic device that is capable of rapidly encapsulating high concentrations (10 million cells per mL) of endothelial colony forming cells (ECFCs) in poly(ethylene glycol)-fibrinogen (PF) hydrogel microspheres; resulting cell-laden microspheres are highly uniform in shape and size...
August 1, 2017: Tissue Engineering. Part C, Methods
https://www.readbyqxmd.com/read/28762841/haematuria-is-a-marker-for-the-severity-of-acute-kidney-injury-but-does-not-associate-with-thrombocytopenia-in-acute-puumala-hantavirus-infection
#15
Tuula K Outinen, Paula Mantula, Outi K Laine, Ilkka Pörsti, Antti Vaheri, Satu M Mäkelä, Jukka Mustonen
BACKGROUND: Puumala hantavirus (PUUV) causes haemorrhagic fever with renal syndrome characterized by thrombocytopenia, capillary leakage and acute kidney injury (AKI) with proteinuria and haematuria. Although the typical histologic lesion is acute tubulointerstitial nephritis, the amount of glomerular proteinuria predicts the severity of upcoming AKI. Here, we studied the associations of haematuria and proteinuria with the severity of emerging AKI, thrombocytopenia and markers of coagulation and fibrinolysis in PUUV infection...
August 1, 2017: Infectious Diseases
https://www.readbyqxmd.com/read/28762059/moderate-alcohol-consumption-and-atherosclerosis-meta-analysis-of-effects-on-lipids-and-inflammation
#16
Yunying Huang, Yongmei Li, Sichao Zheng, Xin Yang, Tenghua Wang, Jie Zeng
OBJECTIVE: Alcohol consumption plays an important role in the risk of major cardiovascular diseases. We conducted a meta-analysis to summarize the association between moderate alcohol consumption and atherosclerosis. DESIGN: In this study four databases and reference lists of retrieved articles were searched to identify eligible studies. A meta-analysis was carried out of all interventional studies that assessed the effects of moderate alcohol consumption on concentrations of low density lipoprotein cholesterol, high density lipoprotein cholesterol, triglycerides, apolipoprotein A I, interleukin 6, plasminogen activator inhibitor 1, fibrinogen, and other biomarkers previously found to be associated with risk of atherosclerosis...
July 31, 2017: Wiener Klinische Wochenschrift
https://www.readbyqxmd.com/read/28760491/effects-of-tibolone-on-fibrinogen-and-antithrombin-iii-a-systematic-review-and-meta-analysis-of-controlled-trials
#17
Małgorzata Bała, Amirhossein Sahebkar, Sorin Ursoniu, Maria-Corina Serban, Anetta Undas, Dimitri P Mikhailidis, Gregory Y H Lip, Jacek Rysz, Maciej Banach
Tibolone is a synthetic steroid with estrogenic, androgenic and progestogenic activity, but the evidence regarding its effects on fibrinogen and antithrombin III (ATIII) has not been conclusive. We assessed the impact of tibolone on fibrinogen and ATIII through a systematic review and meta-analysis of available randomized controlled trials (RCTs). The search included PUBMED, Web of Science, Scopus, and Google Scholar (up to January 31st, 2016) to identify controlled clinical studies investigating the effects of oral tibolone treatment on fibrinogen and ATIII...
July 29, 2017: Pharmacological Research: the Official Journal of the Italian Pharmacological Society
https://www.readbyqxmd.com/read/28756471/the-research-agenda-for-trauma-critical-care
#18
REVIEW
Karim Asehnoune, Zsolt Balogh, Giuseppe Citerio, Andre Cap, Timothy Billiar, Nino Stocchetti, Mitchell J Cohen, Paolo Pelosi, Nicola Curry, Christine Gaarder, Russell Gruen, John Holcomb, Beverley J Hunt, Nicole P Juffermans, Mark Maegele, Mark Midwinter, Frederick A Moore, Michael O'Dwyer, Jean-François Pittet, Herbert Schöchl, Martin Schreiber, Philip C Spinella, Simon Stanworth, Robert Winfield, Karim Brohi
In this research agenda on the acute and critical care management of trauma patients, we concentrate on the major factors leading to death, namely haemorrhage and traumatic brain injury (TBI). In haemostasis biology, the results of randomised controlled trials have led to the therapeutic focus moving away from the augmentation of coagulation factors (such as recombinant factor VIIa) and towards fibrinogen supplementation and administration of antifibrinolytics such as tranexamic acid. Novel diagnostic techniques need to be evaluated to determine whether an individualised precision approach is superior to current empirical practice...
July 29, 2017: Intensive Care Medicine
https://www.readbyqxmd.com/read/28755024/concentration-of-acute-phase-factors-in-vitreous-fluid-in-diabetic-macular-edema
#19
Kazuhiro Kimura, Tomoko Orita, Yuka Kobayashi, Shigeo Matsuyama, Kazushi Fujimoto, Kazuhiko Yamauchi
PURPOSE: Diabetic retinal maculopathy is associated with acute and chronic local inflammation. We measured the concentrations of acute phase factors in vitreous fluid of patients with diabetic macular edema (DME) and examined their relations to visual acuity and central retinal thickness (CRT) both before and after vitrectomy. STUDY DESIGN: Retrospective. METHODS: Vitreous fluid was collected during vitreoretinal surgery from 19 patients with DME and 12 control subjects with epiretinal membrane...
July 28, 2017: Japanese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28754192/early-fibrinogen-concentrate-administration-in-management-of-trauma-induced-coagulopathy-authors-reply
#20
Petra Innerhofer, Dietmar Fries, Elgar Oswald
No abstract text is available yet for this article.
August 2017: Lancet Haematology
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