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https://www.readbyqxmd.com/read/29782987/chitin-silk-fibroin-tio-2-bio-nanocomposite-as-a-biocompatible-wound-dressing-bandage-with-strong-antimicrobial-activity
#1
Mojtaba Ghanbari Mehrabani, Ramin Karimian, Rasul Rakhshaei, Farzaneh Pakdel, Hosein Eslami, Vahid Fakhrzadeh, Mahdi Rahimi, Roya Salehi, Hossein Samadi Kafil
Interconnected microporous biodegradable and biocompatible chitin/silk fibroin/TiO2 nanocomposite wound dressing with high antibacterial, blood clotting and mechanical strength properties were synthesized using freeze-drying method. The prepared nanocomposite dressings were characterized using SEM, FTIR, and XRD analysis. The prepared nanocomposite dressings showed high porosity above 90% with well-defined interconnected porous construction. Swelling and water uptake of the dressing were 93%, which is great for wound dressing applications...
May 18, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29782513/high-red-blood-cell-composition-in-clots-is-associated-with-successful-recanalization-during-intra-arterial-thrombectomy
#2
Jong Wook Shin, Hye Seon Jeong, Hyon-Jo Kwon, Kyu Sang Song, Jei Kim
We evaluated the composition of individual clots retrieved during intra-arterial thrombectomy in relation to recanalization success, stroke subtype, and the presence of clot signs on initial brain images. We analyzed clot and interventional data from 145 retrieval trials performed for 37 patients (69.5±14.0 years, 20 men, large artery atherosclerosis, n = 7; cardioembolism, n = 22; undetermined etiology, n = 8) who had undergone intra-arterial thrombectomy. Rates of clot retrieval and successful recanalization (Arterial Occlusive Lesion score of 2-3) for separate retrieval trials were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29781019/complex-strain-induced-structural-changes-observed-in-fibrin-assembled-in-human-plasma
#3
G Portale, J Torbet
The structure of the core scaffold of blood clots, the interlinked 3-dimensional network of fibrin fibers, is modified by mechanical forces generated by platelet driven clot retraction, wound repair and shear stress through blood flow. Here X-ray diffraction is used to investigate how uniaxial strain, ε (ε = extension/original length), alters fiber structure in highly aligned human plasma clots covalently cross-linked by Factor XIIIa. Three stretch sensitive axially repeating structures are identified. Firstly, the foundation structure with an initial ≈22 nm axial repeat stretches, fades then disappears at ε ≈ 0...
May 21, 2018: Nanoscale
https://www.readbyqxmd.com/read/29780778/impact-of-presence-of-antiphospholipid-antibodies-on-in-vitro-fertilization-outcome
#4
Yeon Hee Hong, Se Jeong Kim, Kyoung Yong Moon, Seul Ki Kim, Byung Chul Jee, Won Don Lee, Seok Hyun Kim
Objective: To investigate prevalence of antiphospholipid antibody (APA) in Korean infertile women undergoing the first in vitro fertilization (IVF) treatment and to evaluate the influence of APA on the subsequent IVF outcomes. Method: Two hundred nineteen infertile women who destined the first IVF were prospectively enrolled in 2 infertility centers. Male factor or uterine factor infertility and women with past or current endocrine or immunologic disorders were completely excluded...
May 2018: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/29780110/bevacizumab-induced-aortic-arterial-thrombosis
#5
Kazuo Suzuki, Takahiro Yanagimura, Kazumasa Ohashi, Hiroshi Kagamu, Toshinori Takada
A 65-year-old man was diagnosed with advanced non-small, non-squamous lung cancer. He was treated with chemotherapy containing bevacizumab as well as cisplatin and pemetrexed. After 2 courses of treatment, computed tomography revealed that his abdominal aortic artery was almost occluded by a thrombus; however, he had no ischemic symptoms. Heparin infusion and warfarin reduced the size of the arterial thrombus and the patient was subsequently treated with chemotherapy without bevacizumab. No thrombotic events occurred during the subsequent treatment...
May 18, 2018: Internal Medicine
https://www.readbyqxmd.com/read/29778734/association-between-maximal-activated-clotting-time-and-major-bleeding-complications-during-transradial-and-transfemoral-percutaneous-coronary-intervention
#6
David W Louis, Kevin Kennedy, Fabio V Lima, Samir Pancholy, J Dawn Abbott, Paul Gordon, Herbert D Aronow
OBJECTIVES: This study sought to determine whether higher maximal activated clotting time (ACT) during transradial (TR) percutaneous coronary intervention (PCI) is associated with greater bleeding risk. BACKGROUND: Higher maximal ACT during transfemoral (TF) PCI has been associated with a greater bleeding risk. It is unclear whether this relationship exists in the setting of TR PCI. METHODS: Among 14,637 patients undergoing TR or TF PCI with unfractionated heparin monotherapy, the study related maximal ACT to the risk of major bleeding...
May 11, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29778733/leukemic-blast-clot-causing-st-segment-elevation-myocardial-infarction
#7
Emmanouil Skalidis, Ioannis Anastasiou, Ioannis Konstantinou, Stylianos Petousis, Eleni Papadaki, Elias Drakos, Fragiskos Parthenakis
No abstract text is available yet for this article.
May 11, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29778730/activated-clotting-time-during-unfractionated-heparin-supported-coronary-intervention-is-access-site-the-new-piece-of-the-puzzle
#8
EDITORIAL
Marco Valgimigli, Giuseppe Gargiulo
No abstract text is available yet for this article.
May 11, 2018: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/29777616/regenerative-endodontics-a-review
#9
REVIEW
S G Kim, M Malek, A Sigurdsson, L M Lin, B Kahler
The European Society of Endodontology and the American Association for Endodontists have released position statements and clinical considerations for regenerative endodontics. There is increasing literature on this field since the initial reports of Iwaya et al. (2001) and Banchs & Trope (2004). Endogenous stem cells from an induced periapical bleeding and scaffolds using blood clot, platelet rich plasma or platelet rich fibrin have been utilized in regenerative endodontics. This approach has been described as a 'paradigm shift" and considered the first treatment option for immature teeth with pulp necrosis...
May 19, 2018: International Endodontic Journal
https://www.readbyqxmd.com/read/29776868/hemorrhagic-cystitis-after-hematopoietic-stem-cell-transplantation-a-challenge-for-the-pediatric-urologist
#10
REVIEW
Romy Gander, Marino Asensio, Gabriela Guillén, Gloria Fatou Royo, Andrea Bolaños, Mercedes Pérez, Cristina Diaz-De-Heredia, Maribel Benitez, Manuel López
OBJECTIVE: Hemorrhagic cystitis (HC) is a serious event that can occur after hematopoietic stem cell transplantation (HSCT). Treatment goals are primarily to preserve life, and then the functionality of the bladder. There is no standard therapeutic approach for HC. Described treatment options provide low success rates and are related to potential life-threatening side effects. The aim of this study was to describe our experience in treatment of HC following HSCT. PATIENTS AND METHODS: This was a retrospective study of patients with HC treated at our institution between January 2010 and October 2016...
April 20, 2018: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/29775720/diagnosing-human-blood-clotting-deficiency
#11
REVIEW
Chong Cheen Ong, Subash C B Gopinath, Leong Wei Xian Rebecca, Veeradasan Perumal, Thangavel Lakshmipriya, Mohamed Shuaib Mohamed Saheed
There are different clotting factors present in blood, carries the clotting cascade and excessive bleeding may cause a deficiency in the clotting. Diagnosis of deficiency in clotting reduces the potential fatality. For enabling a sensor to detect the clotting factors, suitable probes such as antibody and aptamer have been used to capture the clotting factors on the sensing surface. Two major clotting factors were widely studied in detail for the diagnosis of clotting deficiency, which includes factor IX and thrombin...
May 15, 2018: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/29772345/autologous-liquid-platelet-rich-fibrin-a-novel-drug-delivery-system
#12
REVIEW
Richard J Miron, Yufeng Zhang
There is currently widespread interest within the biomaterial field to locally deliver biomolecules for bone and cartilage regeneration. Substantial work to date has focused on the potential role of these biomolecules during the healing process, and the carrier system utilized is a key factor in their effectiveness. Platelet rich fibrin (PRF) is a naturally derived fibrin scaffold that is easily obtained from peripheral blood following centrifugation. Slower centrifugation speeds have led to the commercialization of a liquid formulation (liquid-PRF) resulting in an upper plasma layer composed of liquid fibrinogen/thrombin prior to clot formation that remains in its liquid phase for approximately 15 minutes until injected into bodily tissues...
May 14, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29772078/evaluating-blood-clot-progression-using-magnetic-particle-spectroscopy
#13
Hafsa Khurshid, Yipeng Shi, Brent L Berwin, John B Weaver
PURPOSE: To evaluate the thrombus maturity non-invasively providing the promise of much earlier and more accurate diagnosis of diseases ranging from stroke to myocardial infarction to deep vein thrombosis. METHODS: Magnetic spectroscopy of nanoparticle Brownian rotation (MSB), a form of magnetic particle spectroscopy sensitive to Brownian rotation of magnetic nanoparticles, was used for the detection and characterization of blood clots. The nanoparticles' relaxation time was quantified by scaling the MSB spectra in frequency to match the spectra from nanoparticles in a reference state...
May 17, 2018: Medical Physics
https://www.readbyqxmd.com/read/29770858/-management-of-anticoagulants-in-ophthalmic-surgery-a-survey-among-ophthalmic-surgeons-in-germany
#14
N Feltgen, B Mele, T Dietlein, C Erb, A Eckstein, A Hager, A Heiligenhaus, H Helbig, H Hoerauf, E Hoffmann, D Pauleikhoff, M Schittkowski, B Seitz, C Sucker, S Suffo, U Schaudig, F Tost, S Thurau, P Walter, J Koscielny
INTRODUCTION: As our population ages and comorbidities rise, ophthalmic surgeons are increasingly faced with patients on anticoagulant therapy or with clotting disorders. The ophthalmic surgeon has to weigh the perioperative risk of haemorrhage when anticoagulation continues against the risk of thromboembolism caused by discontinuation or changing the patient's medication (bridging, switching, cessation). There are currently no guidelines or recommendations. METHODS: A survey was sent to the DOG (German Ophthalmologic Society) divisions and associated surgical organizations to determine the status quo...
May 16, 2018: Der Ophthalmologe: Zeitschrift der Deutschen Ophthalmologischen Gesellschaft
https://www.readbyqxmd.com/read/29769447/aquaporin-1-regulates-platelet-procoagulant-membrane-dynamics-and-in-vivo-thrombosis
#15
Ejaife O Agbani, Christopher M Williams, Yong Li, Marion Tj van den Bosch, Samantha F Moore, Adele Mauroux, Lorna Hodgson, Alan S Verkman, Ingeborg Hers, Alastair W Poole
In response to collagen stimulation, platelets use a coordinated system of fluid entry to undergo membrane ballooning, procoagulant spreading, and microvesiculation. We hypothesized that water entry was mediated by the water channel aquaporin-1 (AQP1) and aimed to determine its role in the platelet procoagulant response and thrombosis. We established that human and mouse platelets express AQP1 and localize to internal tubular membrane structures. However, deletion of AQP1 had minimal effects on collagen-induced platelet granule secretion, aggregation, or membrane ballooning...
May 17, 2018: JCI Insight
https://www.readbyqxmd.com/read/29769262/a-new-molecular-assay-and-genomic-complexity-predict-outcome-in-conventional-and-leukemic-non-nodal-mantle-cell-lymphoma
#16
Guillem Clot, Pedro Jares, Eva Giné, Alba Navarro, Cristina Royo, Magda Pinyol, David Martín-Garcia, Santiago Demajo, Blanca Espinet, Antonio Salar, Ana Ferrer, Ana Muntañola, Marta Aymerich, Hilka Rauert-Wunderlich, Elaine S Jaffe, Joseph M Connors, Randy D Gascoyne, Jan Delabie, Armando López-Guillermo, German Ott, George W Wright, Louis M Staudt, Andreas Rosenwald, David W Scott, Lisa M Rimsza, Sílvia Beà, Elías Campo
Mantle cell lymphoma (MCL) is an aggressive B-cell malignancy but some patients have a very indolent evolution. This heterogeneous course is related, in part, to the different biological characteristics of conventional MCL (cMCL) and the distinct subgroup of leukemic non-nodal MCL (nnMCL). Robust criteria to distinguish these MCL subtypes and additional biological parameters that influence their evolution are not well defined. Herein, we describe a novel molecular assay that reliably distinguishes cMCL and nnMCL using blood samples...
May 16, 2018: Blood
https://www.readbyqxmd.com/read/29768983/anticoagulation-monitoring-under-ecmo-support-a-comparative-study-between-the-activated-coagulation-time-and-the-anti-xa-activity-assay
#17
Clément Delmas, Aemilia Jacquemin, Fanny Vardon-Bounes, Bernard Georges, Felipe Guerrero, Nicolas Hernandez, Bertrand Marcheix, Thierry Seguin, Vincent Minville, Jean-Marie Conil, Stein Silva
PURPOSE: Extra Corporeal Membrane Oxygenation (ECMO) is used in cases of severe respiratory and/or circulatory failure over periods of several days to several weeks. Its circuitry requires a closely monitored anticoagulation therapy that is empirically supported by activated clotting time (ACT)-a method often associated with large inter- and intraindividual variability. We aimed to compare the measurement of heparin activity with ACT and the direct measurement of the heparin activity (anti-Xa) in a large ECMO population...
January 1, 2018: Journal of Intensive Care Medicine
https://www.readbyqxmd.com/read/29768734/in-vitro-efficacy-of-pro-and-anticoagulant-strategies-in-compensated-and-acutely-ill-patients-with-cirrhosis
#18
Ton Lisman, Simone Kleiss, Vishal C Patel, Caleb Fisher, Jelle Adelmeijer, Sarah Bos, Arjuna Singanayagam, Sidsel Hyldgaard Stoy, Debbie L Shawcross, William Bernal
BACKGROUND & AIMS: A simultaneous decline in pro- and anticoagulant drivers in patients with liver diseases results in a 'rebalanced' hemostatic system, even in acutely ill patients. Nevertheless, both bleeding and thrombotic events are common. Here, we explored efficacy of pro- and antihemostatic strategies in compensated and acutely ill cirrhotics which may be unpredictable given the profound hemostatic changes. METHODS: We tested the effects in vitro of the addition of clinically relevant doses of commonly used pro- and antihemostatic strategies in plasma from healthy individuals (n=30) and patients with compensated (n=18) and acutely decompensated cirrhosis (n=18), and acute-on-chronic liver failure (n=10)...
May 16, 2018: Liver International: Official Journal of the International Association for the Study of the Liver
https://www.readbyqxmd.com/read/29768672/catheter-ablation-for-atrial-fibrillation-on-uninterrupted-direct-oral-anticoagulants-a-safe-approach
#19
V Sawhney, M Shaukat, E Volkova, N Jones, R Providencia, S Honarbakhsh, G Dhillon, A Chow, M Lowe, P Lambiase, M Dhinoja, S Sporton, M J Earley, R J Schilling, R J Hunter
BACKGROUND: Current consensus guidelines suggest DOACs are interrupted peri-procedurally for catheter ablation (CA) of AF. However, this may predispose patients to thromboembolic complications. This study investigates the safety of CA for AF on uninterrupted DOACs compared to uninterrupted warfarin. METHODS: Single centre, retrospective study of consecutive patients undergoing CA for AF. All patients were heparinised prior to trans-septal puncture with a target activated clotting time (ACT) of 300-350 seconds...
May 16, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29768535/action-of-a-deproteinized-xenogenic-biomaterial-in-the-process-of-bone-repair-in-rats-submitted-to-inhalation-of-cigarette-smoke
#20
Daniela Vieira Buchaim, Patrícia Cincotto Dos Santos Bueno, Jesus Carlos Andreo, Domingos Donizeti Roque, José Sidney Roque, Marcelo Garcia Zilio, Jefferson Augusto Salatin, Natália Kawano, Gabriela Furlanette, Rogério Leone Buchaim
PURPOSE: To investigate if the inorganic bovine bone matrix changes the bone formation in rats submitted to inhalation of cigarette smoke. METHODS: Twenty Wistar rats were divided into two groups: Cigarette Clot Group (CCG), which in the inhalation chamber received the smoke of 10 cigarettes, 3 times a day, 10 minutes, for 30 days and had the surgical cavity filled by clot; Cigarette Biomaterial Group (CBG), submitted to the same inhalation technique but with the cavity filled by biomaterial...
April 2018: Acta Cirúrgica Brasileira
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