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https://www.readbyqxmd.com/read/28441630/winter-to-summer-change-in-vitamin-d-status-reduces-systemic-inflammation-and-bioenergetic-activity-of-human-peripheral-blood-mononuclear-cells
#1
Emily K Calton, Kevin N Keane, Raquel Raizel, Jordan Rowlands, Mario J Soares, Philip Newsholme
BACKGROUND: Vitamin D status [25(OH)D] has recently been reported to be associated with altered cellular bioenergetic profiles of peripheral blood mononuclear cells (PBMCs). No study has tracked the seasonal variation of 25(OH)D and its putative influence on whole body energy metabolism, cellular bioenergetic profiles, inflammatory markers and clinical chemistry. MATERIAL AND METHODS: Whole body energy metabolism and substrate utilisation were measured by indirect calorimetry...
April 13, 2017: Redox Biology
https://www.readbyqxmd.com/read/28439902/concentrated-lyophilized-plasma-used-for-reconstitution-of-whole-blood-leads-to-higher-coagulation-factor-activity-but-unchanged-thrombin-potential-compared-with-fresh-frozen-plasma
#2
Giacomo E Iapichino, Martin Ponschab, Janne Cadamuro, Susanne Süssner, Christian Gabriel, Benjamin Dieplinger, Margot Egger, Christoph J Schlimp, Soheyl Bahrami, Herbert Schöchl
BACKGROUND: During massive hemorrhage, it is recommended to transfuse red blood cells, platelet concentrate, and fresh-frozen plasma in a ratio close to 1:1:1. To avoid the thawing process of fresh frozen plasma, lyophilized plasma (LP) is increasingly used. Evidence is limited on the activity of coagulation factors in reconstituted blood using LP and concentrated LP versions. STUDY DESIGN AND METHODS: Whole blood from ten healthy volunteers was separated into red blood cell, fresh frozen plasma, and platelet concentrate units...
April 25, 2017: Transfusion
https://www.readbyqxmd.com/read/28438297/investigating-a-case-of-possible-field-cancerization-in-oral-squamous-cell-carcinoma-by-the-use-of-next-generation-sequencing
#3
Siavosh Tabatabaeifar, Martin J Larsen, Stine R Larsen, Torben A Kruse, Mads Thomassen, Jens A Sørensen
OBJECTIVES: Local recurrence and the development of second primary tumors (SPT) are important factors that can influence the survival rate of oral squamous cell carcinoma (OSCC) patients. We investigate the concept of field cancerization which proposes that normal tissue adjacent to the primary tumor harbor pre-neoplastic alterations that can lead to the development of local recurrence and SPTs. MATERIALS AND METHODS: To examine the concept of field cancerization, we applied whole-exome and targeted ultra-deep sequencing on 5 freshly frozen samples from a stage III OSCC patient from three tumor sites, lymph node metastasis and blood...
May 2017: Oral Oncology
https://www.readbyqxmd.com/read/28437748/rational-and-timely-haemostatic-interventions-following-cardiac-surgery-coagulation-factor-concentrates-or-blood-bank-products
#4
Mariann Tang, Christian Fenger-Eriksen, Per Wierup, Jacob Greisen, Jørgen Ingerslev, Vibeke Hjortdal, Benny Sørensen
BACKGROUND: Cardiac surgery may cause a serious coagulopathy leading to increased risk of bleeding and transfusion demands. Blood bank products are commonly first line haemostatic intervention, but has been associated with hazardous side effect. Coagulation factor concentrates may be a more efficient, predictable, and potentially a safer treatment, although prospective clinical trials are needed to further explore these hypotheses. This study investigated the haemostatic potential of ex vivo supplementation of coagulation factor concentrates versus blood bank products on blood samples drawn from patients undergoing cardiac surgery...
April 5, 2017: Thrombosis Research
https://www.readbyqxmd.com/read/28432059/increased-amplitude-of-inward-rectifier-k-currents-with-advanced-age-in-smooth-muscle-cells-of-murine-superior-epigastric-arteries
#5
Sebastien Hayoz, Jessica Pettis, Vanessa Bradley, Steven S Segal, William F Jackson
Inward rectifier K(+) channels (KIR) may contribute to skeletal muscle blood flow regulation and adapt to advanced age. Using mouse abdominal wall superior epigastric arteries (SEAs) from either young (3-6 months) or old (24-26 months) male C57BL/6 mice, we investigated whether SEA smooth muscle cells (SMCs) express functional KIR, and how aging may affect KIR function. Freshly dissected SEAs were either enzymatically dissociated to isolate SMCs for electrophysiological recording (perforated patch) and mRNA expression, or used intact for pressure myography...
April 21, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28408749/high-prevalence-of-tp53-mutations-is-associated-with-poor-survival-and-an-emt-signature-in-gliosarcoma-patients
#6
Sung-Yup Cho, Changho Park, Deukchae Na, Jee Yun Han, Jieun Lee, Ok-Kyoung Park, Chengsheng Zhang, Chang Ohk Sung, Hyo Eun Moon, Yona Kim, Jeong Hoon Kim, Jong Jae Kim, Shin Kwang Khang, Do-Hyun Nam, Jung Won Choi, Yeon-Lim Suh, Dong Gyu Kim, Sung Hye Park, Hyewon Youn, Kyuson Yun, Jong-Il Kim, Charles Lee, Sun Ha Paek, Hansoo Park
Gliosarcoma (GS) is a rare variant (2%) of glioblastoma (GBM) that poses clinical genomic challenges because of its poor prognosis and limited genomic information. To gain a comprehensive view of the genomic alterations in GS and to understand the molecular etiology of GS, we applied whole-exome sequencing analyses for 28 GS cases (6 blood-matched fresh-frozen tissues for the discovery set, 22 formalin-fixed paraffin-embedded tissues for the validation set) and copy-number variation microarrays for 5 blood-matched fresh-frozen tissues...
April 14, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28392727/survey-material-choices-in-haematology-eqa-a-confounding-factor-in-automated-counting-performance-assessment
#7
REVIEW
Barbara De la Salle
The complete blood count (CBC) is one of the most frequently requested tests in laboratory medicine, performed in a range of healthcare situations. The provision of an ideal assay material for external quality assessment is confounded by the fragility of the cellular components of blood, the lack of commutability of stabilised whole blood material and the lack of certified reference materials and methods to which CBC results can be traced. The choice of assay material between fresh blood, extended life assay material and fully stabilised, commercially prepared, whole blood material depends upon the scope and objectives of the EQA scheme...
February 15, 2017: Biochemia Medica: časopis Hrvatskoga Društva Medicinskih Biokemičara
https://www.readbyqxmd.com/read/28391986/gene-products-promoting-remyelination-are-up-regulated-in-a-cell-therapy-product-manufactured-from-banked-human-cord-blood
#8
Paula Scotland, Susan Buntz, Pamela Noeldner, Arjun Saha, Tracy Gentry, Joanne Kurtzberg, Andrew E Balber
BACKGROUND AIMS: DUOC-01, a cell product being developed to treat demyelinating conditions, is composed of macrophages that arise from CD14(+) monocytes in the mononuclear cell (MNC) population of banked cord blood (CB). This article demonstrates that expression of multiple gene products that promote remyelination is rapidly up-regulated during manufacturing of DUOC-01 from either MNC or purified CB CD14(+) monocytes. METHODS: Cell cultures were initiated with MNC or with immunoselected CD14(+) monocytes isolated from the same CB unit...
April 5, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28378896/a-comprehensive-assessment-of-immunophenotyping-performed-in-cryopreserved-peripheral-whole-blood
#9
Chris P Verschoor, Vikas Kohli, Cynthia Balion
BACKGROUND: Monitoring the frequency and phenotype of white blood cell subsets using flow cytometry (immunophenotyping) has proven to be an incredibly powerful tool in the assessment of health. Although improved technologies have aided in the practical implementation of immunophenotyping in clinical and epidemiological studies, the transportation of blood from the site of collection to a central laboratory for analysis within a reasonable timeframe may not be feasible. Hence, the purpose of the following study was to investigate the validity of cryopreserved whole blood as a simple to prepare and cost-effective biospecimen for multi-colour immunophenotyping in a large epidemiological study - namely, The Canadian Longitudinal Study on Aging (CLSA)...
April 5, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28375559/transfusion-of-35-day-stored-red-blood-cells-does-not-alter-lipopolysaccharide-tolerance-during-human-endotoxemia
#10
Anna L Peters, Maike E van Hezel, Robert B Klanderman, Anita M Tuip-de Boer, W Joost Wiersinga, Anne H van der Spek, Robin van Bruggen, Dirk de Korte, Nicole P Juffermans, Alexander P J Vlaar
BACKGROUND: Transfusion-related immunomodulation (TRIM) encompasses immunosuppressive and proinflammatory effects induced by red blood cell (RBC) transfusion. Changes that occur during storage in the RBC product have been hypothesized to underlie TRIM, mediated by tolerance of toll-like receptors (TLR). We investigated whether transfusion of 35-day-stored autologous RBCs alters cytokine production in response to stimulation with lipopolysaccharide (LPS) or lipotheic acid (LTA), in a clinically relevant model of endotoxemia...
April 4, 2017: Transfusion
https://www.readbyqxmd.com/read/28370076/analytical-challenges-in-quantifying-abiraterone-with-lc-ms-ms-in-human-plasma
#11
Guillemette E Benoist, Eric van der Meulen, Floor J E Lubberman, Winald R Gerritsen, Tineke J Smilde, Jack A Schalken, Jan H Beumer, David M Burger, Nielka P van Erp
A method was developed and validated to quantify abiraterone in human plasma. During assay development several analytical challenges were encountered: limited stability in patient samples, adsorption to glass, co-elution with metabolites, and carry-over issues. Limited stability (2 h) was found for abiraterone in fresh plasma as well as whole blood at ambient temperature. When kept at 2-8 °C, abiraterone in plasma was stable for 24 h and in whole blood for 8 h. Adsorption of abiraterone to glass materials was addressed by using polypropylene throughout the method...
April 3, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/28347872/ultrasonic-method-for-monitoring-the-clotting-process-during-whole-blood-coagulation
#12
A Voleisis, R Kazys, B Voleisiene, R Sliteris, L Mazeika
The purpose of this work was to develop a multichannel ultrasonic measurement method for monitoring a spatially non-uniform blood clotting process. This novel method is based on simultaneous multi-channel measurements of ultrasound propagation velocities in different horizontal cross-sections of clotting blood. The most common method used for determining blood-clotting time is the capillary tube method. For this purpose ultrasonic methods based on measurements of the velocities of ultrasound waves in clotting blood are also used...
February 24, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28343935/blood-derived-products-in-pediatrics-new-laboratory-tools-for-optimizing-potency-assignment-and-reducing-side-effects
#13
REVIEW
Jean Amiral, Jerard Seghatchian
Neonates and children can develop rare bleeding disorders due to congenital/acquired coagulation Factor deficiencies, or allo-immune/autoimmune complications, or can undergo surgeries at high haemorrhagic risk. They then need specialized transfusion of blood components/products, or purified blood extracted products or recombinant proteins. Blood-derived therapies conventionally used for management of affected infants with genetic/acquired deficiencies, bleeding problems (coagulation Factor reduced or missing) or thrombotic disorders (reduced or missing anticoagulant proteins) pose some additional risks...
March 15, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/28338599/volumetric-control-of-whole-blood-collection-in-austere-environments
#14
Michael A Meledeo, Andrew D Fisher, Grantham C Peltier, Ethan A Miles, William B Muse, Win B Kerr, Shawn C Nessen, Andrew P Cap
INTRODUCTION: Fresh whole blood transfusions are a powerful tool in prehospital care; however, the lack of equipment such as a scale in field situations frequently leads to collections being under- or overfilled, leading to complications for both patient and donor. This study describes two methods for simple, rapid control of collection bag volume: (1) a length of material to constrict the bag, and (2) folding/clamping the bag. METHOD: Whole blood collection bags were allowed to fill with saline via gravity...
March 23, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28333831/deployed-skills-training-for-whole-blood-collection-by-a-special-operations-expeditionary-surgical-team
#15
Linda C Benavides, Iain M Smith, Jerome M Benavides, Douglas M Bowley, Heidi A Doughty, Jonathan B Lundy
BACKGROUND: Non-compressible hemorrhage is the leading cause of potentially preventable battlefield death. Combining casualty retrieval from the battlefield and damage control resuscitation (DCR) within the "golden hour" increases survival. However, transfusion requirements may exceed the current blood component stocks held by forward surgical teams. Warm fresh whole blood (WFWB) is an alternative. We report WFWB transfusion training developed by and delivered to a US Golden Hour Offset Surgical Treatment Team (GHOST-T) and the resulting improvement in confidence with WFWB transfusion...
March 22, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28328685/whole-blood-transfusion-closest-to-the-point-of-injury-during-french-remote-military-operations
#16
Yann Daniel, Anne Sailliol, Thomas Pouget, Sébastien Peyrefitte, Sylvain Ausset, Christophe Martinaud
To improve the survival of combat casualties, interest in the earliest resort to whole blood (WB) transfusion on the battlefield has been emphasized. Providing volume, coagulation factors, plasma and oxygenation capacity, WB appears actually as an ideal product severe trauma management. WB can be collected in advance, and stored for subsequent utilization, or can be drawn, directly on the battlefield, once a soldier is wounded, from an uninjured companion and immediately transfused.Such concepts require a great control of risks at each step, especially regarding ABO mismatches, and transfusion transmitted diseases...
March 21, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28316437/a-comparative-study-showing-the-potency-of-anti-c3d-and-anti-immunoglobulin-g-in-polyspecific-anti-human-globulin-using-fresh-and-cryopreserved-red-blood-cells
#17
Kanchan Ahuja, Ranjan Kumar Satapathy, Garima Gulati, Surinder Singh
BACKGROUND: The antiglobulin test is used to determine red blood cells (RBCs) having surface-bound immunoglobulin G (IgG) and/or complement (C3b, C3d, C4b, and C4d) free in serum or attached to antigens on RBCs. In such circumstances, the quality of the anti-human globulin (AHG) which is used in routine cross-match/indirect agglutination test plays a vital role in blood transfusion medicine. For potency testing of polyspecific AHG, it is recommended by the Food and Drug Administration and the Centre for Biologics Evaluation and Research to use fresh O +ve RBCs within 1 hr of collection for sensitization with anti-C3d...
January 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28277822/comparison-of-dna-isolation-using-salting-out-procedure-and-automated-isolation-magna-system
#18
Marta Kalousová, Kateřina Levová, Aleš A Kuběna, Marie Jáchymová, Věra Franková, Tomáš Zima
INTRODUCTION: Isolation of genomic DNA is a key step in genetic analysis. The aim of the study was to evaluate the suitability of isolation of DNA from peripheral blood with manual salting out procedure and automated MagNA system under specific conditions. EXPERIMENTAL: The impact of storage conditions, type of material (whole blood or blood cells) and method used for DNA extraction were evaluated in terms of DNA yield, its purity and integrity. Fresh material, material stored at 2-8°C for 1-4 weeks and frozen at -80°C were tested...
March 9, 2017: Preparative Biochemistry & Biotechnology
https://www.readbyqxmd.com/read/28271672/evaluation-of-the-lyophilized-platelets-function-by-thromboelastography-in-an-in-vitro-platelet-transfusion-model
#19
Xiaojun Deng, Xinguang Wu, Gaoshun Ge, Lihong Huang, Ning Li, Dan Wang
BACKGROUND: At present, liquid conserved platelets (PLTs) can only be stored at 22°C for up to 5 days. Waste of outdated PLTs and short supply of fresh PLTs were both seen in blood banks. Lyophilized PLTs were considered as one of the candidate replacements for liquid conserved PLTs. It is important to evaluate the function before it can be used in clinical trial. METHODS: In this study, an in vitro platelet transfusion model was established to evaluate the function of rehydrated lyophilized platelets (RLPs) by thromboelastography (TEG)...
March 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/28264143/a-flowcytometric-analysis-to-efficiently-quantify-multiple-innate-immune-cells-and-t-cell-subsets-in-human-blood
#20
D F Draxler, M T Madondo, G Hanafi, M Plebanski, R L Medcalf
The balance of inflammation and immunosuppression driven by changed ratios in diverse myeloid and T cell subsets, as well as their state of activation and ability to migrate to lymphoid compartments or inflammatory sites, has emerged as a highly active area of study across clinical trials of vaccines and therapies against cancer, trauma, as well as autoimmune and infectious diseases. There is a need for effective protocols which maximally use the possibilities offered by modern flow cytometers to characterize such immune cell changes in peripheral blood using small volumes of human blood...
April 2017: Cytometry. Part A: the Journal of the International Society for Analytical Cytology
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