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https://www.readbyqxmd.com/read/28632435/relative-effects-of-plasma-fibrinogen-concentrate-and-factor-xiii-on-rotem-coagulation-profiles-in-an-in-vitro-model-of-massive-transfusion-in-trauma
#1
David E Schmidt, Märit Halmin, Agneta Wikman, Anders Östlund, Anna Ågren
Massive traumatic haemorrhage is aggravated through the development of trauma-induced coagulopathy, which is managed by plasma transfusion and/or fibrinogen concentrate administration. It is yet unclear whether these treatments are equally potent in ensuring adequate haemostasis, and whether additional factor XIII (FXIII) administration provides further benefits. In this study, we compared ROTEM whole blood coagulation profiles after experimental massive transfusion with different transfusion regimens in an in vitro model of dilution- and transfusion-related coagulopathy...
June 20, 2017: Scandinavian Journal of Clinical and Laboratory Investigation
https://www.readbyqxmd.com/read/28615843/in-vitro-adaptability-of-plasmodium-falciparum-to-different-fresh-serum-alternatives
#2
Chandrajit Dohutia, Pradyumna K Mohapatra, Dibya Ranjan Bhattacharyya, Kabita Gogoi, Khukumoni Bora, Basanta K Goswami
To reduce the dependency on fresh AB(+) serum in continuous culture of Plasmodium falciparum, a comparative study was undertaken to assess the in vitro adaptability of P. falciparum to media supplemented with fresh AB(+) serum from whole blood, AB(+) plasma, serum derived from AB(+) plasma, AB(+) human serum from Sigma, Albumax II, fetal bovine serum and new born calf serum, independently and in different combinations. Combinations were used to analyze whether two different substitutes demonstrate any synergistic effect on the growth of the parasites...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28604503/multi-country-validation-of-samba-a-novel-molecular-point-of-care-test-for-hiv-1-detection-in-resource-limited-setting
#3
Johnson Ondiek, Zikulah Namukaya, Sekesai Mtapuri-Zinyowera, Suna Balkan, Ali Elbireer, Ines Ushiro Lumb, Charles Kiyaga, Neha Goel, Allyson Ritchie, Patience Ncube, Kenneth Omuomu, Kenneth Ndiege, Adeodata Kekitiinwa, Douglas Mangwanya, Mary Glenn Fowler, Lou Nadala, Helen Lee
INTRODUCTION: Early diagnosis of HIV-1 infection and the prompt initiation of antiretroviral therapy are critical to achieving a reduction in the morbidity and mortality of infected infants. The SAMBA HIV-1 Qual Whole Blood Test was developed specifically for early infant diagnosis and prevention of mother-to-child transmission programs implemented at the point-of-care in resource-limited settings. METHODS: We have evaluated the performance of this test run on the SAMBA I semi-automated platform with fresh whole blood specimens collected from 202 adults and 745 infants in Kenya, Uganda, and Zimbabwe...
June 9, 2017: Journal of Acquired Immune Deficiency Syndromes: JAIDS
https://www.readbyqxmd.com/read/28601642/comparison-of-citrated-and-fresh-whole-blood-for-viscoelastic-coagulation-testing-during-elective-neurosurgery
#4
E Silverberg, F Tornqvist, T Kander, J Bengzon, C Solomon, J Bonnevier, U Schött
BACKGROUND: Previous viscoelastic haemostatic tests studies have often indicated a hypercoagulative test signal with citrated blood, which could influence clinical decision makings. PURPOSE: The aim of this study was to compare fresh and citrated whole blood using two non-automated viscoelastic ROTEM and Sonoclot tests. Our hypothesis was that citrated blood would demonstrate a hypercoagulative response in this setting, not tested before. METHODS: Perioperative viscoelastic coagulation changes were evaluated with a ROTEM and Sonoclot in 38 patients undergoing elective brain tumor surgery...
June 3, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28596659/patterns-of-adverse-transfusion-reactions-in-a-tertiary-care-centre-of-north-india-a-step-towards-hemovigilance
#5
Rajni Bassi, Shikha Aggarwal, Kanchan Bhardwaj, Kusum K Thakur
Transfusion of blood and blood products is a double edged sword, so it should be used judiciously. The primary aim of the centralized Haemovigilance Program is to improve transfusion safety. To determine the incidence of adverse transfusion reactions (ATRs) in recipients of blood and blood components. Prospective study from January 2014 till April 2015 was done. ATRs reported to the Department of Transfusion Medicine were recorded and analyzed on the basis of their clinical features and lab tests. During the study period 25,099 units of blood and blood components were transfused and 100 ATRs (0...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28594360/rapid-complexation-of-aptamers-by-their-specific-antidotes
#6
Heidi Stoll, Heidrun Steinle, Nadja Wilhelm, Ludmilla Hann, Silju-John Kunnakattu, Miwako Narita, Christian Schlensak, Hans P Wendel, Meltem Avci-Adali
Nucleic acid ligands, aptamers, harbor the unique characteristics of small molecules and antibodies. The specificity and high affinity of aptamers enable their binding to different targets, such as small molecules, proteins, or cells. Chemical modifications of aptamers allow increased bioavailability. A further great benefit of aptamers is the antidote (AD)-mediated controllability of their effect. In this study, the AD-mediated complexation and neutralization of the thrombin binding aptamer NU172 and Toll-like receptor 9 (TLR9) binding R10-60 aptamer were determined...
June 8, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28585052/measurement-of-total-co2-in-microliter-samples-of-urine-and-other-biological-fluids-using-infrared-detection-of-co2
#7
Francesco Trepiccione, Francesco Maria Iena, Laura Catalini, Francesco Martino Carpi, Mogens Koed, Sebastian Frische
The purpose of this study is to describe a low-cost and simply made instrument capable of measuring the total CO2 content of microliter volumes of biological fluids utilizing a commercially available CO2 sensor based on a NDIR detector. The described instrument is based on transformation of dissolved HCO3(-) to CO2 by acidification and subsequent measurement of the produced CO2. The instrument has a linear response in the range 0.025-10 μmol HCO3(-), which enables measurements in fresh urine and plasma samples down to 5 μl...
June 5, 2017: Pflügers Archiv: European Journal of Physiology
https://www.readbyqxmd.com/read/28570672/mirasol-pathogen-reduction-technology-treatment-of-human-whole-blood-does-not-induce-acute-lung-injury-in-mice
#8
Beñat Mallavia, Nicholas Kwaan, Susanne Marschner, Susan Yonemura, Mark R Looney
In resource-limited settings and in the military theater, fresh human whole blood is commonly transfused, but infectious risks are a concern. Sophisticated molecular testing for potential infectious agents in the whole blood is often unavailable. To address this unmet need, pathogen reduction technology (PRT) has been developed, and it is an effective approach to inactivate a broad range of pathogens found in human blood. However, studies are needed to determine if it is harmful to blood cells and whether these cells could damage the transfused recipient, including the development of acute lung injury/acute respiratory distress syndrome...
2017: PloS One
https://www.readbyqxmd.com/read/28542848/change-of-transfusion-and-treatment-paradigm-in-major-trauma-patients
#9
P Stein, A Kaserer, K Sprengel, G A Wanner, B Seifert, O M Theusinger, D R Spahn
Trauma promotes trauma-induced coagulopathy, which requires urgent treatment with fixed-ratio transfusions of red blood cells, fresh frozen plasma and platelet concentrates, or goal-directed administration of coagulation factors based on viscoelastic testing. This retrospective observational study compared two time periods before (2005-2007) and after (2012-2014) the implementation of changes in trauma management protocols which included: use of goal-directed coagulation management; admission of patients to designated trauma centres; whole-body computed tomography scanning on admission; damage control surgery; permissive hypotension; restrictive fluid resuscitation; and administration of tranexamic acid...
May 23, 2017: Anaesthesia
https://www.readbyqxmd.com/read/28535135/recovery-from-cyclophosphamide-overdose-in-a-dog
#10
Jessica Renee Finlay, Kenneth Wyatt, Courtney North
An adult female spayed dog was evaluated after inadvertently receiving a total dose of 1,750 mg oral cyclophosphamide, equivalent to 2,303 mg/m(2), over 21 days (days -21 to 0). Nine days after the last dose of cyclophosphamide (day +9), the dog was evaluated at Perth Veterinary Specialists. Physical examination revealed mucosal pallor, a grade 2/6 systolic heart murmur, and severe hemorrhagic cystitis. Severe nonregenerative pancytopenia was detected on hematology. Broad spectrum antibiotics, two fresh whole blood transfusions, granulocyte colony stimulating factor, and tranexamic acid were administered...
May 23, 2017: Journal of the American Animal Hospital Association
https://www.readbyqxmd.com/read/28516808/implication-of-foam-sclerosant-inactivation-by-human-whole-blood-in-a-laboratory-setting
#11
Emma B Dabbs, Scott J Dos Santos, Laurensius E Mainsiouw, Alina A Sheikh, Alexis Gkantiragas, Irenie Shiangoli, Mike R Watkins, Jaya L Nemchand, Mark S Whiteley
Background During sclerotherapy, it has been recommended to confirm intravenous placement of the needle by aspirating blood into the sclerosant syringe. This may inactivate some, or all of the sclerosant. Aims To quantify the volume of human blood needed to completely inactivate 1 ml of sodium tetradecyl sulphate, and comparing fresh blood and blood that has been stored in an ethylenediaminetetraacetic acid tube. Methods A series of manual titrations were carried out following a procedure developed at STD Pharmaceutical Products Ltd (Hereford, UK) and listed in the British Pharmacopeia...
January 1, 2017: Phlebology
https://www.readbyqxmd.com/read/28512485/effect-of-blood-exposure-on-push-out-bond-strength-of-four-calcium-silicate-based-cements
#12
Kazem Ashofteh Yazdi, Behnam Bolhari, Tohid Sabetmoghaddam, Naghmeh Meraji, Mohammad Javad Kharazifard
INTRODUCTION: The purpose of this study was to compare the push-out bond strength of white ProRoot Mineral Trioxide Aggregate (MTA), Biodentine, calcium-enriched mixture (CEM) cement and Endosequence Root Repair Material (ERRM) putty after exposure to blood. METHODS AND MATERIALS: A total of 96 root dentin slices with a standardized thickness of 1.00±0.05 mm and standardized canal spaces were randomly divided into 4 main experimental groups (n=24) according to the calcium silicate based cement (CSC) used: white ProRoot MTA, CEM Cement, ERRM Putty and Biodentine...
2017: Iranian Endodontic Journal
https://www.readbyqxmd.com/read/28505561/class-enzyme-based-motors-for-on-the-fly-enantiomer-analysis-of-amino-acids
#13
Laura García-Carmona, María Moreno-Guzmán, María Cristina González, Alberto Escarpa
Here, two class-enzyme motors are properly designed allowing the rapid dispersion of the class-enzyme D-amino acid oxidase (DAO) and L-amino acid oxidase (LAO) for selective "on the fly" biodetection of D and L-amino acids (AAs), respectively. The efficient movement together with the continuous release of fresh class-enzyme leads to a greatly accelerated enzymatic reaction processes without the need of external stirring or chemical and physical attachment of the enzyme. Ultra-fast detection (<2min) and accurate quantifications of L-phenylalanine (L-Phe) in plasma and whole-blood newborns samples diagnosed with Phenylketonuria and total D-AAs in Vibrio cholera cultures are pioneer illustrated as relevant examples of each enantiomer determination...
May 6, 2017: Biosensors & Bioelectronics
https://www.readbyqxmd.com/read/28503991/platelet-concentrates-modulate-myeloid-dendritic-cell-immune-responses
#14
Katrina K Ki, Helen M Faddy, Robert L Flower, Melinda M Dean
Platelet transfusion has been reported to modulate the recipients' immune system. To date, the precise mechanism(s) driving poor patient outcomes (e.g., increased rate of mortality, morbidity, infectious complications and prolonged hospital stays) following platelet transfusion are largely undefined. To determine the potential for platelet concentrates (PC) to modulate responses of crucial immune regulatory cells, a human in vitro whole blood model of transfusion was established. Maturation and activation of human myeloid dendritic cells (mDC) and the specialized subset blood DC antigen (BDCA)3(+) DC were assessed following exposure to buffy-coat derived PC at day (D)2 (fresh) and D5 (date-of-expiry)...
May 15, 2017: Platelets
https://www.readbyqxmd.com/read/28498140/effect-of-albumin-in-combination-with-mannitol-on-whole-blood-coagulation-in-vitro-assessed-by-thromboelastometry
#15
Kadri Lillemäe, Antti T Laine, Alexey Schramko, Tomi T Niemi
BACKGROUND: Albumin and mannitol may interfere with hemostasis, but their coinfluence is unclear. We aimed to determine the effects of albumin alone and in combination with mannitol or Ringer acetate (RAC) on hemostasis in crossover in vitro study. MATERIALS AND METHODS: From citrated fresh whole blood withdrawn from 10 volunteers, we prepared 2.5, 5, 10, 15, and 20 vol% dilutions of 4% albumin (Alb group). Each sample was thereafter diluted by 15% mannitol (Alb/Man group) or RAC (Alb/RAC group) at a ratio of 9:1...
May 11, 2017: Journal of Neurosurgical Anesthesiology
https://www.readbyqxmd.com/read/28486277/evaluation-of-recombinant-factor-viii-fc-eloctate-activity-by-thromboelastometry-in-a-multicenter-phase-3-clinical-trial-and-correlation-with-bleeding-phenotype
#16
Frank Driessler, Maricel G Miguelino, Glenn F Pierce, Robert T Peters, Jurg M Sommer
: The aim of this study was to compare the hemostatic efficacy of recombinant factor VIII Fc (rFVIIIFc) (Eloctate) and Advate by ex-vivo rotation thromboelastometry (ROTEM) of whole blood and to explore potential ROTEM parameters that may be more predictive of a patient's bleeding tendency than plasma FVIII activity. Thirteen clinical sites were selected to perform ROTEM on freshly collected blood samples from 44 patients in the phase 3 study for rFVIIIFc, including 16 patients undergoing sequential pharmacokinetic assessment of Advate and rFVIIIFc...
June 2, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28484010/erythritol-is-a-pentose-phosphate-pathway-metabolite-and-associated-with-adiposity-gain-in-young-adults
#17
Katie C Hootman, Jean-Pierre Trezzi, Lisa Kraemer, Lindsay S Burwell, Xiangyi Dong, Kristin A Guertin, Christian Jaeger, Patrick J Stover, Karsten Hiller, Patricia A Cassano
Metabolomic markers associated with incident central adiposity gain were investigated in young adults. In a 9-mo prospective study of university freshmen (n = 264). Blood samples and anthropometry measurements were collected in the first 3 d on campus and at the end of the year. Plasma from individuals was pooled by phenotype [incident central adiposity, stable adiposity, baseline hemoglobin A1c (HbA1c) > 5.05%, HbA1c < 4.92%] and assayed using GC-MS, chromatograms were analyzed using MetaboliteDetector software, and normalized metabolite levels were compared using Welch's t test...
May 23, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28479088/ultrasound-and-intra-clot-microbubbles-enhanced-catheter-directed-thrombolysis-in%C3%A2-vitro-and-in%C3%A2-vivo
#18
Shunji Gao, Qiong Zhu, MengJiao Guo, Yuan Gao, Xiaoxiao Dong, Zhong Chen, Zheng Liu, Feng Xie
Insufficient penetration of microbubbles (MBs) into the vessel-obstructing thrombi significantly reduces the effectiveness of ultrasound thrombolysis (UT). The widely performed catheter-directed therapy (CDT) makes it possible to increase the local concentration of MBs in the clot. In an occluded vessel with a bypass, treatment of fresh human whole blood clots with CDT-based UT (intra-clot injection of MBs and urokinase, with ultrasound exposure) resulted in a significantly higher percentage of weight loss (35...
May 4, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28466013/do-mirnas-play-a-role-in-fetal-growth-restriction-a-fresh-look-to-a-busy-corner
#19
REVIEW
Benito Chiofalo, Antonio Simone Laganà, Alberto Vaiarelli, Valentina Lucia La Rosa, Diego Rossetti, Vittorio Palmara, Gaetano Valenti, Agnese Maria Chiara Rapisarda, Roberta Granese, Fabrizio Sapia, Onofrio Triolo, Salvatore Giovanni Vitale
Placenta is the crucial organ for embryo and fetus development and plays a critical role in the development of fetal growth restriction (FGR). There are increasing evidences on the role of microRNAs (miRNAs) in a variety of pregnancy-related complications such as preeclampsia and FGR. More than 1880 miRNAs have been reported in humans and most of them are expressed in placenta. In this paper, we aimed to review the current evidence about the topic. According to retrieved data, controversial results about placental expression of miRNAs could be due (at least in part) to the different experimental methods used by different groups...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28459050/assessing-volumetric-absorptive-microsampling-coupled-with-stable-isotope-dilution-assay-and-liquid-chromatography-tandem-mass-spectrometry-as-potential-diagnostic-tool-for-whole-blood-5-methyltetrahydrofolic-acid
#20
Markus Kopp, Michael Rychlik
Volumetric absorptive microsamplers (VAMS) have been developed recently as a promising tool for clinical blood sampling. Compared to dried blood spot samples analyzed by accurate stable isotope dilution assays (SIDAs), the new technique could provide further substantial miniaturizing of folate assays by eliminating hematocrit effects and uneven analyte distribution within the sample. Herein, we present a miniaturized SIDA coupled with LC-MS/MS measurement of 5-methyltetrahydrofolic acid as main folate vitamer in whole blood (WB) using [(13)C5]-5-methyltetrahydrofolic acid as internal standard...
2017: Frontiers in Nutrition
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