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https://www.readbyqxmd.com/read/28527185/surface-heparinization-and-blood-compatibility-modification-of-small-intestinal-submucosa-sis-for-small-caliber-vascular-regeneration
#1
Bensong Han, Feng Xue, Cunyi Fan, Xiumei Mo
OBJECTIVES: This study aims to investigate the small intestinal submucosal (SIS) surface after heparinization with the hypothermia plasma technique, to improve the blood compatibility of SIS, and to explore the possibility of construction of small-caliber vascular grafts with modified SIS scaffolds in vivo. METHODS: SIS films prepared from jejunums of pigs were processed for surface treatment at different time periods with the argon plasma initiation technique under vacuum, and were then immediately immersed in 4% (m/v) heparin sodium solution for 24-h heparinization...
2017: Bio-medical Materials and Engineering
https://www.readbyqxmd.com/read/28504829/prediction-of-thrombophilia-in-patients-with-unexplained-recurrent-pregnancy-loss-using-a-statistical-model
#2
Tongfei Wang, Xiaomin Kang, Liying He, Zhilan Liu, Haijing Xu, Aimin Zhao
OBJECTIVE: To establish a statistical model to predict thrombophilia in patients with unexplained recurrent pregnancy loss (URPL). METHODS: A retrospective case-control study was conducted at Ren Ji Hospital, Shanghai, China, from March 2014 to October 2016. The levels of D-dimer (DD), fibrinogen degradation products (FDP), activated partial thromboplastin time (APTT), prothrombin time (PT), thrombin time (TT), fibrinogen (Fg), and platelet aggregation in response to arachidonic acid (AA) and adenosine diphosphate (ADP) were collected...
May 15, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28498944/assessment-of-standard-laboratory-tests-and-rotational-thromboelastometry-for-the-prediction-of-postoperative-bleeding-in-liver-transplantation
#3
T M Dötsch, D Dirkmann, D Bezinover, M Hartmann, J W Treckmann, A Paul, F H Saner
Background.: Perioperative bleeding remains a major challenge in liver transplantation. We aimed to compare standard laboratory tests with thromboelastometry (ROTEM ® ) with regard to their ability to predict postoperative non-surgical bleeding. Methods.: Data from 243 adult liver transplant recipients from January 2012 to May 2014 were evaluated retrospectively. Upon admission to the intensive care unit, coagulation status was assessed using standard laboratory tests [prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen concentration, and platelet count] and ROTEM ® whole blood coagulation assays...
May 12, 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28488785/is-it-acceptable-to-use-coagulation-plasma-samples-stored-at-room-temperature-and-4%C3%A2-c-for-24%C3%A2-hours-for-additional-prothrombin-time-activated-partial-thromboplastin-time-fibrinogen-antithrombin-and-d-dimer-testing
#4
V Rimac, D Coen Herk
INTRODUCTION: Coagulation laboratories are faced on daily basis with requests for additional testing in already analyzed fresh plasma samples. This prompted us to examine whether plasma samples stored at room temperature (RT), and 4°C for 24 hours can be accepted for additional prothrombin time (PT), activated partial thromboplastin time (aPTT), fibrinogen (Fbg), antithrombin (AT), and D-dimer testing. METHODS: We measured PT, aPTT, Fbg in 50 and AT in 30 plasma samples with normal and pathological values, within 4 hours of blood collection (baseline results) and after 24-hours storage at RT (primary tubes), and 4°C (aliquots)...
May 10, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28485425/antithrombotic-effect-and-mechanism-of-rubus-spp-blackberry
#5
Pingyao Xie, Yong Zhang, Xuebiao Wang, Jinfeng Wei, Wenyi Kang
The compounds of Rubus spp. Blackberry (RSB) were isolated and identified by a bioassay-guided method, and their antithrombotic effects and mechanism were investigated with the acute blood stasis rat model. The RSB extract was evaluated by activated partial thromboplastin time (APTT), thrombin time (TT), prothrombin time (PT), and fibrinogen (FIB) assays in vitro. Results indicated that RSB extract exhibited anticoagulant activity. In addition to compounds 1 and 6, the other compounds also exhibited anticoagulant activity in vitro...
May 9, 2017: Food & Function
https://www.readbyqxmd.com/read/28482536/influences-of-mesoporous-zinc-calcium-silicate-on-water-absorption-degradability-antibacterial-efficacy-hemostatic-performances-and-cell-viability-to-microporous-starch-based-hemostat
#6
Yu Hou, Yan Xia, Yongkang Pan, Songchao Tang, Xiaofei Sun, Yang Xie, Han Guo, Jie Wei
Efficacious hemostatic agents have significant potential application in visceral organ or large vessel arterial injure. In this study, mesoporous zinc-calcium silicate (m-ZCS) was synthesized, and microporous starch (MS) based hemostatic agents of m-ZCS/MS composites for hemorrhage control was fabricated. The results showed that the incorporation of m-ZCS into MS significantly enhanced the water absorption and degradability of the composites, which were dependent on the m-ZCS content. Moreover, the composites with antibacterial property could inhibit the growth of Escherichia coli (E...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28481034/impact-of-different-storage-times-at-room-temperature-of-unspun-citrated-blood-samples-on-routine-coagulation-tests-results-results-of-a-bicenter-study-and-review-of-the-literature
#7
P Toulon, S Metge, M Hangard, S Zwahlen, S Piaulenne, V Besson
INTRODUCTION: A maximum delay between blood collection and coagulation testing of 4 hours is recommended by most guidelines. As information on optimal storage times is limited, we investigated the potential effect of different storage times of unspun tubes, that is, ≤2, 4, 6, and 8 hours, on routine coagulation test results. METHODS: Four evacuated polymer tubes containing 0.109 mol/L tri-Na citrate were drawn from 144 patients, including 39 patients on vitamin K-antagonists...
May 8, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28480942/comparative-aspects-of-blood-coagulation-measurements-in-various-wild-and-captive-bird-species
#8
Vanessa Guddorf, Karl Rohn, Norbert Kummerfeld, Reinhard Mischke
OBJECTIVE: Information about the influence of species variety or diseases on coagulation values in avian blood is rare. The aim of this study was to assess the influence of species on measurements of coagulation parameters in avian plasma samples using commercially available reagents and to investigate potential influences of selected diseases on clotting times. MATERIAL AND METHODS: Prothrombin time (PT), activated partial thromboplastin time (aPTT) and thrombin time (TT) were measured in citrated plasma of healthy individuals collected from eight different wild and captive avian species applying currently commercially available reagents prepared for use in humans, which were preselected in preliminary studies...
May 8, 2017: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
https://www.readbyqxmd.com/read/28476550/disseminated-intravascular-coagulation-is-associated-with-the-neurologic-outcome-of-cardiac-arrest-survivors
#9
Dong Hun Lee, Byung Kook Lee, Kyung Woon Jeung, Yong Hun Jung, Sung Min Lee, Yong Soo Cho, Seong-Woo Yun, Yong Il Min
PURPOSE: We aimed to examine the serial changes in coagulofibrinolytic markers that occurred after the restoration of spontaneous circulation (ROSC) in cardiac arrest patients, who were treated with targeted temperature management (TTM). We also evaluated the association between the disseminated intravascular coagulation (DIC) score and clinical outcomes. METHODS: This was a single-centre, retrospective observational study that included cardiac arrest patients who were treated with TTM from May 2012 to December 2015...
May 1, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28469907/reducing-unnecessary-coagulation-testing-in-the-emergency-department-reduced
#10
Michael Fralick, Lisa K Hicks, Hina Chaudhry, Nicola Goldberg, Alun Ackery, Rosane Nisenbaum, Michelle Sholzberg
The PT/INR (prothrombin time/international normalized ratio) and aPTT (activated partial thromboplastin time) were tests developed in the early 20th century for specific and unique indications. Despite this, they are often ordered together routinely. The objective of this study was to determine if a multimodal intervention could reduce PT/INR and aPTT testing in the emergency department (ED). This was a prospective multi-pronged quality improvement study at St. Michael's Hospital. The initiative involved stakeholder engagement, uncoupling of PT/INR and aPTT testing, teaching, and most importantly a revision to the ED order panels...
2017: BMJ Quality Improvement Reports
https://www.readbyqxmd.com/read/28447415/the-danger-of-relying-on-the-aptt-and-pt-in-patients-on-doac-therapy-a-potential-patient-safety-issue
#11
REVIEW
D M Adcock, R C Gosselin
Prolongation of the activated partial thromboplastin time (APTT) and prothrombin time/international normalized ratio (PT/INR) correlates poorly with plasma concentrations of direct oral anticoagulant agents (DOACS) including direct thrombin and direct Xa inhibitors. It has been repeatedly demonstrated that patients can have normal APTT and PT/INR with a therapeutic plasma concentration of a DOAC. Clinicians can no longer rely on a normal APTT and PT to determine that an anticoagulated patient is safe to undergo an invasive procedure...
May 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28442600/effect-of-rivaroxaban-on-preventing-deep-vein-thrombosis-in-aged-diabetics-with-femoral-neck-fractures-after-hip-replacement
#12
Yi-Min Zhang, Xin Jiang, Yan-Shan Sun
This study estimates the effect of rivaroxaban on preventing deep-vein thrombosis (DVT) in aged diabetics with femoral neck fractures after hip replacement. Our study was composed of 236 aged diabetics with femoral neck fractures, which were divided into the rivaroxaban and control groups. Reaction time (R time), clot formation time (K time), alpha angle (α), maximum amplitude (MA), clot elasticity (G) and coagulation index (CI), prothrombin time (PT) and activated partial thromboplastin time (APTT) were measured...
April 25, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/28433147/mucopolysaccharide-from-cuttlefish-purification-chemical-characterization-and-bioactive-potential
#13
Palaniappan Seedevi, Meivelu Moovendhan, Shanmugam Vairamani, Annaian Shanmugam
The sulfated mucopolysaccharide (GAG) was isolated from S. pharonis and the carbohydrate and protein content was found to be 62.4% and 3.9%. The disaccharide profile of sulfated GAG composed glucuronic acid, N-acetyl glucosamine and sulfate content by contributing 50.11%, 38.00% and 27.69% respectively. The carbon, hydrogen and nitrogen content of the sulfated GAG showed 14.80%, 1.68% and 2.99% respectively. The molecular weight of sulfated GAG was calculated as 27kDa and the structural characterization was done by Fourier Transform Infrared (FT-IR) and NMR Spectroscopy...
July 1, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28430802/the-quality-changes-in-fresh-frozen-plasma-of-the-blood-donors-at-high-altitude
#14
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/28427779/fish-oil-lc-pufas-do-not-affect-blood-coagulation-parameters-and-bleeding-manifestations-analysis-of-8-clinical-studies-with-selected-patient-groups-on-omega-3-enriched-medical-nutrition
#15
Stephanie Jeansen, Renger F Witkamp, Jossie A Garthoff, Ardy van Helvoort, Philip C Calder
BACKGROUND & AIMS: The increased consumption of fish oil enriched-products exposes a wide diversity of people, including elderly and those with impaired health to relatively high amounts of n-3 long-chain polyunsaturated fatty acids (n-3 LC-PUFAs). There is an ongoing debate around the possible adverse effects of n-3 LC-PUFAs on bleeding risk, particularly relevant in people with a medical history of cardiovascular events or using antithrombotic drugs. METHODS: This analysis of 8 clinical intervention studies conducted with enteral medical nutrition products containing fish oil as a source of n-3 LC-PUFAs addresses the occurrence of bleeding-related adverse events and effects on key coagulation parameters (Prothrombin Time [PT], (activated) and Partial Thromboplastin Time [(a)PTT])...
March 29, 2017: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28426384/a-2-year-old-boy-with-circulatory-failure-owing-to-streptococcal-toxic-shock-syndrome-case-report
#16
Werner Keenswijk, Johan Vande Walle
A 2-year-old boy presented with severe hypotension and acute kidney injury after a prodrome of non-bloody diarrhoea and fever in the preceding 3 days. He had a mild Ebstein cardiac anomaly but otherwise a normal past history and growth. On examination, he looked ill, his temperature was 37.5 °C, circulation was poor, and there were several purpuric lesions on the face, hands and scrotum. Haemoglobin was 7.8 g/dL (11-14), total white cell count 27 × 10(9)/L, platelets 62 × 10(9)/L, blood urea nitrogen 20...
April 20, 2017: Paediatrics and International Child Health
https://www.readbyqxmd.com/read/28422416/clot-wave-analysis-and-thromboembolic-score-in-liver-cirrhosis-two-opposing-phenomena
#17
M F Ruberto, O Sorbello, A Civolani, D Barcellona, L Demelia, F Marongiu
INTRODUCTION: Prothrombin time (PT) and activated partial thromboplastin time (aPTT) are abnormal but unreliable in cirrhotic patients to express their risk of bleeding. However, these patients may also suffer from thrombotic episodes. In order to investigate the dynamics of the formation of fibrin, the clot waveform analysis (CWA) of aPTT was studied together with a score for the evaluation of the thromboembolic risk. METHODS: CWA in terms of velocity (1st derivative), acceleration (2nd derivatives) and density (Delta) of aPTT and the Padua Prediction Score (PPS) for venous thromboembolism were studied in 191 cirrhotic patients...
April 19, 2017: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/28415521/effect-of-halloysite-nanotubes-on-the-structure-and-function-of-important-multiple-blood-components
#18
Keke Wu, Ru Feng, Yanpeng Jiao, Changren Zhou
Many researchers have investigated the application of halloysite nanotubes (HNTs) in biomedicine, because of their special nanoscale hollow tubular structure. Although the cytocompatibility of HNTs has been studied, their blood compatibility has not been systematically investigated. In this work, the effect of HNTs on the structure and function of different blood components has been studied, including the morphology and hemolysis of red blood cells (RBCs). Based on scanning electron microscopy (SEM) observations, optical density test and flow cytometry analysis, we found that HNTs can affect the morphology and membrane integrity of RBCs in phosphate buffered saline (PBS) in a content-dependent way...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28407450/finding-the-optimal-dose-of-vitamin-k1-to-treat-vitamin-k-deficiency-and-to-avoid-anaphylactoid-reactions
#19
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/28400980/association-between-coagulation-function-and-cerebral-microbleeds-in-ischemic-stroke-patients-with-atrial-fibrillation-and-or-rheumatic-heart-disease
#20
Junfeng Liu, Deren Wang, Yao Xiong, Bian Liu, Jing Lin, Shihong Zhang, Bo Wu, Chenchen Wei, Ming Liu
Cerebral microbleeds (CMBs), which indicate hemorrhage-prone disease, may associate with hemostatic abnormalities, but the association between CMBs and coagulation function is uncertain. We aimed to examine this possible association. The following coagulation function indicators were evaluated in 85 consecutive ischemic stroke patients diagnosed with atrial fibrillation and/or rheumatic heart disease: prothrombintime (PT), activated partial thromboplastin time (APTT), and levels of D-dimer and fibrinogen. Indicators were assessed within 24 h after admission...
April 2017: Aging and Disease
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