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https://www.readbyqxmd.com/read/28647580/one-carbon-metabolism-biomarkers-and-cognitive-decline-in-the-very-old-the-newcastle-85-study
#1
Nuno Mendonça, Antoneta Granic, John C Mathers, Carmen Martin-Ruiz, Keith A Wesnes, Chris J Seal, Carol Jagger, Tom R Hill
OBJECTIVES: Although the biological rationale for the association between folate, vitamin B12, and homocysteine with cognitive function seems plausible, conflicting results have been reported. This study aimed to determine the associations between 1-carbon (1-C) metabolism biomarkers (folate, vitamin B12, and homocysteine), and cognitive impairment at baseline and the rate of cognitive decline over 5 years in the very old. DESIGN: The Newcastle 85+ Study was a prospective longitudinal study of people 85 years old and followed over 5 years in Northeast England...
June 21, 2017: Journal of the American Medical Directors Association
https://www.readbyqxmd.com/read/28643465/severe-hemolysis-after-plasma-transfusion-in-a-neonate-with-necrotizing-enterocolitis-clostridium-perfringens-infection-and-red-blood-cell-t-polyagglutination
#2
Julia Moh-Klaren, Gwellaouen Bodivit, Myriam Jugie, Philippe Chadebech, Laurent Chevret, Mostafa Mokhtari, Xavier Chamillard, Philippe Gallon, Pierre Tissières, Philippe Bierling, Rachid Djoudi, France Pirenne, Nicolas Burin-des-Roziers
BACKGROUND: Red blood cell (RBC) Thomsen-Friedenreich antigen exposure (T activation) in infants with necrotizing enterocolitis (NEC) has occasionally been associated with posttransfusional intravascular hemolysis thought to be due to anti-T antibodies in the donor plasma. STUDY DESIGN AND METHODS: We describe an infant with NEC and Clostridium perfringens infection complicated by severe hemolysis after plasma transfusion. After this case, infants with confirmed NEC were prospectively evaluated for T activation...
June 22, 2017: Transfusion
https://www.readbyqxmd.com/read/28642875/rapid-elimination-of-blood-alcohol-using-erythrocytes-mathematical-modeling-and-in-vitro-study
#3
Yuliya G Alexandrovich, Elena A Kosenko, Elena I Sinauridze, Sergey I Obydennyi, Igor I Kireev, Fazoil I Ataullakhanov, Yuriy G Kaminsky
Erythrocytes (RBCs) loaded with alcohol dehydrogenase (ADH) and aldehyde dehydrogenase (ALD) can metabolize plasma ethanol and acetaldehyde but with low efficiency. We investigated the rate-limiting factors in ethanol oxidation by these enzymes loaded into RBCs. Mathematical modeling and in vitro experiments on human RBCs loaded simultaneously with ADH and ALD (by hypoosmotic dialysis) were performed. The simulation showed that the rate of nicotinamide-adenine dinucleotide (NAD(+)) generation in RBC glycolysis, but not the activities of the loaded enzymes, is the rate-limiting step in external ethanol oxidation...
2017: BioMed Research International
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
#4
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/28623397/different-effects-of-%C3%AE-linolenic-acid-gla-supplementation-on-plasma-and-red-blood-cell-phospholipid-fatty-acid-composition-and-calcium-oxalate-kidney-stone-risk-factors-in-healthy-subjects-from-two-race-groups-with-different-risk-profiles-pose-questions-about
#5
Allen L Rodgers, Dalielah Jappie-Mahomed, Paul J van Jaarsveld
Fatty acid (FA) composition of phospholipids in plasma and red blood cells (RBC) can influence calciuria, oxaluria and renal stone formation. In this regard, the ratio of arachidonic acid (AA) and its precursor linoleic acid (LA) appears to be important. Administration of γ-linolenic acid (GLA) has been shown to increase the concentration of dihomo-gamma linoleic acid (DGLA) relative to AA indicating that it may attenuate biosynthesis of the latter. Such effects have not been investigated in race groups having difference stone occurrence rates...
June 16, 2017: Urolithiasis
https://www.readbyqxmd.com/read/28618975/a-black-cohosh-extract-causes-hematologic-and-biochemical-changes-consistent-with-a-functional-cobalamin-deficiency-in-female-b6c3f1-n-mice
#6
Michelle C Cora, William Gwinn, Ralph Wilson, Debra King, Suramya Waidyanatha, Grace E Kissling, Sukhdev S Brar, Dorian Olivera, Chad Blystone, Greg Travlos
Black cohosh rhizome, available as a dietary supplement, is most commonly marketed as a remedy for dysmenorrhea and menopausal symptoms. A previous subchronic toxicity study of black cohosh dried ethanolic extract (BCE) in female mice revealed a dose-dependent ineffective erythropoiesis with a macrocytosis consistent with the condition known as megaloblastic anemia. The purpose of this study was to investigate potential mechanisms by which BCE induces these particular hematological changes. B6C3F1/N female mice (32/group) were exposed by gavage to vehicle or 1,000 mg/kg BCE for 92 days...
January 1, 2017: Toxicologic Pathology
https://www.readbyqxmd.com/read/28605122/a-comparison-of-hematology-plasma-chemistry-and-injuries-in-hickory-shad-alosa-mediocris-captured-by-electrofishing-or-angling-during-a-spawning-run
#7
Mark A Matsche, Kevin Rosemary, Charles P Stence
BACKGROUND: Declines in Hickory shad (Alosa mediocris) populations in Chesapeake Bay have prompted efforts at captive propagation of wild broodfish for stock enhancement and research. OBJECTIVE: The objectives of this study were to evaluate injuries sustained, and immediate and delayed (24 hours) effects on blood variables related to 2 fish capturing methods (electrofishing [EF] and angling). METHODS: Blood specimens were collected from fish immediately following capture by EF and angling (n = 40 per sex and capture method) from the Susquehanna River (MD, USA)...
June 12, 2017: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/28590357/rotem-significantly-optimizes-transfusion-practices-for-damage-control-resuscitation-in-combat-casualties
#8
Nicolas J Prat, Andrew D Meyer, Nichole K Ingalls, Julie Trichereau, Joseph J DuBose, Andrew P Cap
BACKGROUND: Up to 40% of combat casualties with a truncal injury die of massive hemorrhage before reaching a surgeon. This hemorrhage can be prevented with damage control resuscitation (DCR) methods, which are focused on replacing shed whole blood (WB) by empirically transfusing blood components in a 1:1:1:1 ratio of platelets:plasma:erythrocytes:cryoprecipitate (PLT:FFP:RBC:CRYO). Measurement of hemostatic function with thromboelastometry (ROTEM) may allow optimization of the type and quantity of blood products transfused...
June 6, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28576598/blood-cadmium-and-metallothionein-concentrations-in-females-of-two-sympatric-pinnipeds-species
#9
P Polizzi, M B Romero, L N Chiodi Boudet, A Ponce de León, S Medici, A Costas, D Rodríguez, M Gerpe
Otaria flavescens (SASL) and Arctocephalus australis (SAFS) are endemic of South America. The aims were to assess Cd concentrations in red blood cells (RBC) and plasma from free living females of both species; and to establish metallothioneins (MT) levels in blood fractions and the possible relationship between MTs and Cd. Blood of fifteen SASL and eight SAFS females from Isla de Lobos were analyzed (years 2010-2011). All animals showed Cd levels above the detection limit. Cd concentrations on SAFS were higher than those of SASL, however, no significant differences were observed on metal concentrations between cell fractions by species...
May 30, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28568651/red-blood-cells-for-transfusion-in-patients-with-sepsis-respective-roles-of-unit-age-and-exposure-to-recipient-plasma
#10
Philippe Chadebech, Gwellaouen Bodivit, Keyvan Razazi, Christophe de Vassoigne, Laurence Pellé, Nicolas Burin-des-Roziers, Thibault Bocquet, Philippe Bierling, Rachid Djoudi, Armand Mekontso-Dessap, France Pirenne
BACKGROUND: Red blood cell (RBC) storage in blood banks is not exempt from cellular injury. Alterations not observed on RBCs freshly isolated from units can rapidly appear in circulation. The transfusion of old blood units, even if this is a controversial issue, could therefore have adverse effects on the recipient. We wanted to determine the respective effects of storage duration and recipient plasma on RBCs for transfusion into patients with severe sepsis. STUDY DESIGN AND METHODS: Eleven stored RBC units were sampled at various time points, approximately Days 3 to 8 (referred to as fresh RBCs) and Days 38 to 42 (old RBCs) and tested in coincubation experiments with plasma obtained from 13 patients with severe sepsis and 17 healthy donors as controls...
May 31, 2017: Transfusion
https://www.readbyqxmd.com/read/28544589/methionine-tumor-starvation-by-erythrocyte-encapsulated-methionine-gamma-lyase-activity-controlled-with-per-os-vitamin-b6
#11
Fabien Gay, Karine Aguera, Karine Sénéchal, Angie Tainturier, Willy Berlier, Delphine Maucort-Boulch, Jérôme Honnorat, Françoise Horand, Yann Godfrin, Vanessa Bourgeaux
Erymet is a new therapy resulting from the encapsulation of a methionine gamma-lyase (MGL; EC number 4.4.1.11) in red blood cells (RBC). The aim of this study was to evaluate erymet potential efficacy in methionine (Met)-dependent cancers. We produced a highly purified MGL using a cGMP process, determined the pharmacokinetics/pharmacodynamics (PK/PD) properties of erymet in mice, and assessed its efficacy on tumor growth prevention. Cytotoxicity of purified MGL was tested in six cancer cell lines. CD1 mice were injected with single erymet product supplemented or not with vitamin B6 vitamer pyridoxine (PN; a precursor of PLP cofactor)...
June 2017: Cancer Medicine
https://www.readbyqxmd.com/read/28544277/use-of-a-vascular-closure-device-during-percutaneous-arterial-access-in-a-dog-with-impaired-hemostasis
#12
Brian A Scansen, Caitlin M Hokanson, Steven G Friedenberg, Hooman Khabiri
OBJECTIVE: To report the use of a vascular closure device (VCD) to provide rapid arterial hemostasis following percutaneous femoral arterial catheterization and diagnostic angiography in a thrombocytopenic and coagulopathic dog. CASE SUMMARY: A 6-year-old female spayed Kai Ken Tora dog presented after vehicular trauma. The dog was diagnosed with traumatic pneumothorax, degloving wounds of the right antebrachium, subcutaneous hemorrhage within the axillary tissues of the left thoracic limb, and anemia and thrombocytopenia secondary to acute hemorrhage...
May 23, 2017: Journal of Veterinary Emergency and Critical Care
https://www.readbyqxmd.com/read/28543744/repetitive-supra-physiological-shear-stress-impairs-red-blood-cell-deformability-and-induces-hemolysis
#13
Jarod T Horobin, Surendran Sabapathy, Michael J Simmonds
The supra-physiological shear stress that blood is exposed to while traversing mechanical circulatory assist devices affects the physical properties of red blood cells (RBCs), impairs RBC deformability, and may induce hemolysis. Previous studies exploring RBC damage following exposure to supra-physiological shear stress have employed durations exceeding clinical instrumentation, thus we explored changes in RBC deformability following exposure to shear stress below the reported "hemolytic threshold" using shear exposure durations per minute (i...
May 23, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28537938/should-all-massively-transfused-patients-be-treated-equally-an-analysis-of-massive-transfusion-ratios-in-the-nontrauma-setting
#14
Eric W Etchill, Sara P Myers, Lauren M McDaniel, Matthew R Rosengart, Jay S Raval, Darrell J Triulzi, Andrew B Peitzman, Jason L Sperry, Matthew D Neal
OBJECTIVES: Although balanced resuscitation has become integrated into massive transfusion practice, there is a paucity of evidence supporting the delivery of high ratios of plasma and platelet to RBCs in the nontrauma setting. This study investigated the administration of blood component ratios in the massively transfused nontrauma demographic. DESIGN: Retrospective analysis of a prospective, observational cohort of massively bleeding patients. SETTING: Surgical and critically ill patients at a tertiary medical center between 2011 and 2015...
May 23, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28533934/mortality-outcomes-in-trauma-patients-undergoing-prehospital-red-blood-cell-transfusion-a-systematic-literature-review
#15
REVIEW
Gregory S Huang, C Michael Dunham
The value of prehospital red blood cell (RBC) transfusion for trauma patients is controversial. The purposes of this literature review were to determine the mortality rate of trauma patients with hemodynamic instability and the benefit of prehospital RBC transfusion. A 30-year systematic literature review was performed in 2016. Eligible studies were combined for meta-analysis when tests for heterogeneity were insignificant. The synthesized mortality was 35.6% for systolic blood pressure ≤ 90 mmHg; 51.1% for ≤ 80 mmHg; and 63...
2017: International Journal of Burns and Trauma
https://www.readbyqxmd.com/read/28524547/performance-of-a-new-generation-continuous-autotransfusion-device-including-fat-removal-and-consequences-for-quality-controls
#16
T F Seyfried, M Gruber, D Bitzinger, M T Pawlik, A Breu, B M Graf, E Hansen
BACKGROUND AND OBJECTIVES: Cell salvage plays a key role in blood conservation. To maintain high performance, quality management is recommended. Accordingly, a new-generation autotransfusion device was tested for its performance and compared with its predecessor. Two different calculations of quality parameters were applied. MATERIALS AND METHODS: In an experimental study, the continuous autotransfusion devices CATSmart and Continuous Autotransfusion System (C.A...
May 19, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28524208/microfluidic-analysis-of-red-blood-cell-deformability-as-a-means-to-assess-hemin-induced-oxidative-stress-resulting-from-plasmodium-falciparum-intraerythrocytic-parasitism
#17
Kerryn Matthews, Simon P Duffy, Marie-Eve Myrand-Lapierre, Richard R Ang, Li Li, Mark D Scott, Hongshen Ma
Hemolytic anemia is one of the hallmarks of malaria and leads to an increase in oxidized heme (hemin) within the plasma of infected individuals. While scavenger proteins sequester much of the circulating heme, it has been hypothesized that extracellular heme may play a central role in malaria pathogenesis. We have previously developed the multiplex fluidic plunger (MFP) device for the measurement of red blood cell (RBC) deformability. Here, we demonstrate that the measurement of changes in RBC deformability is a sensitive method for inferring heme-induced oxidative stress...
May 19, 2017: Integrative Biology: Quantitative Biosciences From Nano to Macro
https://www.readbyqxmd.com/read/28518049/red-blood-cell-storage-time-and-transfusion-current-practice-concerns-and-future-perspectives
#18
REVIEW
María García-Roa, María Del Carmen Vicente-Ayuso, Alejandro M Bobes, Alexandra C Pedraza, Ataúlfo González-Fernández, María Paz Martín, Isabel Sáez, Jerard Seghatchian, Laura Gutiérrez
Red blood cells (RBCs) units are the most requested transfusion product worldwide. Indications for transfusion include symptomatic anaemia, acute sickle cell crisis, and acute blood loss of more than 30% of the blood volume, with the aim of restoring tissue oxygen delivery. However, stored RBCs from donors are not a qualitative equal product, and, in many ways, this is a matter of concern in the transfusion practice. Besides donor-to-donor variation, the storage time influences the RBC unit at the qualitative level, as RBCs age in the storage bag and are exposed to the so-called storage lesion...
May 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28515013/atomic-force-microscopy-from-red-blood-cells-to-immunohaematology
#19
REVIEW
Natasha Yeow, Rico F Tabor, Gil Garnier
Atomic force microscopy (AFM) offers complementary imaging modes that can provide morphological and structural details of red blood cells (RBCs), and characterize interactions between specific biomolecules and RBC surface antigen. This review describes the applications of AFM in determining RBC health by the observation of cell morphology, elasticity and surface roughness. Measurement of interaction forces between plasma proteins and antibodies against RBC surface antigen using the AFM also brought new information to the immunohaematology field...
May 11, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28510741/early-or-late-fresh-frozen-plasma-administration-in-newborns-and-small-infants-undergoing-cardiac-surgery-the-appear-randomized-trial
#20
P Bianchi, M Cotza, C Beccaris, S Silvetti, G Isgrò, G Pomè, A Giamberti, M Ranucci
Background: In newborns and small infants undergoing cardiac surgery with cardiopulmonary bypass (CPB) and blood priming, it is unclear whether there is reduced blood loss if fresh frozen plasma (FFP) is added to the CPB priming volume. This single-centre, randomized trial tested the hypothesis that the administration of FFP after CPB (late FFP group) is superior to FFP priming (early FFP group) in terms of postoperative bleeding and overall red blood cell (RBC) transfusion. Methods: Seventy-three infants weighing <10 kg were randomly allocated to receive FFP to supplement RBCs in the CPB priming solution ( n =36) or immediately after CPB ( n =37)...
May 1, 2017: British Journal of Anaesthesia
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