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https://www.readbyqxmd.com/read/28538790/challenges-for-conducting-blood-collection-and-biochemical-analysis-in-a-large-multicenter-school-based-study-with-adolescents-lessons-from-erica-in-brazil
#1
Felipe Vogt Cureau, Katia Vergetti Bloch, Aline Henz, Camila W Schaan, Carlos Henrique Klein, Cecília Lacroix de Oliveira, Denise Tavares Giannini, Elisa Brosina de Leon, Gabriela de Azevedo Abreu, Gabriela Heiden Telo, Glauber Monteiro Dias, Kênia Mara Baiocchi de Carvalho, Laura Augusta Barufaldi, Maria Cristina Caetano Kuschnir, Moyses Szklo, Renan Montenegro, Thiago Luiz Nogueira da Silva, Ulf Ekelund, Beatriz D Schaan
The Study of Cardiovascular Risk in Adolescents (ERICA) is a pioneering study that aimed to assess the prevalence of cardiovascular risk factors, including metabolic syndrome components in Brazilian adolescents. This study aims to describe the methodological aspects related to blood collection as well as to report pertaining results of the preparation, transport, storage, and exams in ERICA. Exams in ERICA were performed in a single laboratory and blood samples were collected in schools in a standardized manner...
May 18, 2017: Cadernos de Saúde Pública
https://www.readbyqxmd.com/read/28532785/best-practice-in-the-measurement-and-interpretation-of-lysosomal-acid-lipase-in-dried-blood-spots-using-the-inhibitor-lalistat-2
#2
Zoltan Lukacs, Marianne Barr, John Hamilton
Lysosomal acid lipase deficiency (LAL-D) is an inherited, autosomal recessive lysosomal storage disorder characterized by progressive damage in multiple organ systems. Diagnosis is especially important in infants, in whom the course of disease is rapidly lethal without treatment. The recent regulatory approval of recombinant human lysosomal acid lipase (LAL), sebelipase alfa, merits rapid diagnosis in clinical routine, particularly in infants. A method for measuring LAL activity in dried blood spot (DBS) samples using the highly specific LAL inhibitor Lalistat 2 is available...
May 19, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/28525501/red-blood-cell-storage-lesion-induced-adverse-effects-more-smoke-is-there-fire
#3
Eldad A Hod, Richard O Francis, Steven L Spitalnik
No abstract text is available yet for this article.
June 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28524734/capillary-microsampling-in-nonclinical-safety-assessment-practical-sampling-and-bioanalysis-from-a-cro-perspective
#4
David Coleman, Graeme Smith, Rachel Lawrence, Deborah McManus, Sunetha Diaram, Joanna Edwards
Microsampling has the 3R benefits of refining blood collection techniques while reducing the number of animals required for rodent safety assessment studies. There are significant scientific benefits of correlating study findings with systemic exposure and consequently, there is an industry drive to utilize microsampling in regulatory toxicology studies. This article will focus on capillary microsampling and will discuss the initial considerations before using capillary microsampling, study design and some practicalities of sample collection...
May 19, 2017: Bioanalysis
https://www.readbyqxmd.com/read/28524252/in-vivo-noninvasive-analysis-of-graphene-nanomaterial-pharmacokinetics-using-photoacoustic-flow-cytometry
#5
Dmitry A Nedosekin, Jacqueline Nolan, Chengzhong Cai, Shawn E Bourdo, Zeid Nima, Alexandru S Biris, Vladimir P Zharov
Graphene-based nanomaterials (GBNs) are quickly revolutionizing modern electronics, energy generation and storage, clothing and biomedical devices. Due to GBN's variety of physical and chemical parameters that define their toxicity and their aggregation in suspension, interpreting its toxicology without accurate information on graphene's distribution and behavior in live organisms is challenging. In this work, we present a laser-based optical detection methodology for noninvasive detection and pharmacokinetics analysis of GBNs directly in blood flow in mice using in vivo photoacoustic (PA) flow cytometry (PAFC)...
May 19, 2017: Journal of Applied Toxicology: JAT
https://www.readbyqxmd.com/read/28521623/enzyme-linked-immunoassay-based-quantitative-measurement-of-apolipoprotein-b-apob-in-dried-blood-spots-a-biomarker-of-cardiovascular-disease-risk
#6
Geeta N Eick, Paul Kowal, Tyler Barrett, Elizabeth A Thiele, J Josh Snodgrass
Apolipoprotein B (ApoB) is a strong predictor of cardiovascular disease, which remains the leading cause of mortality in both higher and lower income countries. Here, we adapted an enzyme-linked immunosorbent assay (ELISA) development kit for quantitative determination of ApoB levels in serum and plasma for use with dried blood spots (DBS). After confirming the dilution linearity of the assay for DBS, we measured ApoB in 208 venous DBS samples. Then, using Passing-Bablok regression analysis and Spearman rank correlation analysis, we evaluated the correspondence in ApoB values between matched plasma and finger-prick DBS samples from 40 individuals who had ApoB values spanning the range of ApoB values observed in the 208 vDBS samples...
2017: Biodemography and Social Biology
https://www.readbyqxmd.com/read/28518051/red-blood-cells-ageing-markers-a-multi-parametric-analysis
#7
Manon Bardyn, Benjamin Rappaz, Keyvan Jaferzadeh, David Crettaz, Jean-Daniel Tissot, Inkyu Moon, Gerardo Turcatti, Niels Lion, Michel Prudent
BACKGROUND: Red blood cells collected in citrate-phosphate-dextrose can be stored for up to 42 days at 4 °C in saline-adenine-glucose-mannitol additive solution. During this controlled, but nevertheless artificial, ex vivo ageing, red blood cells accumulate lesions that can be reversible or irreversible upon transfusion. The aim of the present study is to follow several parameters reflecting cell metabolism, antioxidant defences, morphology and membrane dynamics during storage. MATERIALS AND METHODS: Five erythrocyte concentrates were followed weekly during 71 days...
May 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28518050/acetylcholinesterase-provides-new-insights-into-red-blood-cell-ageing-in-vivo-and-in-vitro
#8
Joames K Freitas Leal, Merel J W Adjobo-Hermans, Roland Brock, Giel J C G M Bosman
BACKGROUND: During its 120 days sojourn in the circulation, the red blood cell (RBC) remodels its membrane. Acetylcholinesterase (AChE) is a glycosylphosphatidylinositol (GPI)-linked enzyme that may serve as a marker for membrane processes occurring this ageing-associated remodelling process. MATERIALS AND METHODS: Expression and enzymatic activity of AChE were determined on RBCs of various ages, as obtained by separation based on volume and density (ageing in vivo), and on RBCs of various times of storage in blood bank conditions (ageing in vitro), as well as on RBC-derived vesicles...
May 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28518049/red-blood-cell-storage-time-and-transfusion-current-practice-concerns-and-future-perspectives
#9
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/28511543/sterilization-hydration-dehydration-and-tube-fabrication-of-zwitterionic-hydrogels
#10
Xia Han, Hsiang-Chieh Hung, Priyesh Jain, Fang Sun, Xuewei Xu, Wei Yang, Tao Bai, Shaoyi Jiang
Terminal sterilization of hydrogel-based biomaterials is crucial for their clinically relevant applications. The authors synthesized nonfouling zwitterionic hydrogels consisting of carboxybetaine (CB) acrylamide monomer and a carboxybetaine dimethacrylate crosslinker. The mechanical and biological stability of nonfouling hydrogels were investigated using three main terminal sterilization techniques, i.e., steam autoclave, ethylene oxide gas, and gamma irradiation. It was found that CB hydrogels are very stable at high temperature and pressure and in oxidative gas environments without changing their stress, modulus, and nonfouling properties...
May 16, 2017: Biointerphases
https://www.readbyqxmd.com/read/28508651/sugar-breathing-glycopolymersomes-for-regulating-glucose-level
#11
Yufen Xiao, Hui Sun, Jianzhong Du
Diabetes mellitus is a chronic, life-threatening illness that affects people of every age and ethnicity. It is a long-suffering pain for those who are affected and must regulate their blood glucose level by frequent subcutaneous injection of insulin every day. Herein, we propose a non-insulin and antidiabetic-drug-free strategy for regulating blood glucose level by a nano-sized "sugar sponge" which is a lectin-bound glycopolymersome capable of regulating glucose due to the dynamic recognition between the lectin and different carbohydrates...
May 16, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28507766/effect-of-dietary-mannanoligosaccharide-supplementation-on-nutrient-digestibility-hindgut-fermentation-immune-response-and-antioxidant-indices-in-dogs
#12
Mahesh M Pawar, Ashok K Pattanaik, Dharmendra K Sinha, Tapas K Goswami, Kusumakar Sharma
BACKGROUND: Use of prebiotics in companion animal nutrition is often considered advantageous over probiotics because of the ease of handling, ability to withstand processing and storage etc. While most of the studies on prebiotic use in dogs have been done with processed food as basal diet, the response in relation to homemade diet feeding is not very well explored. METHODS: The study was conducted to evaluate the effects of dietary mannanoligosaccharide (MOS) supplementation on nutrient digestibility, hindgut fermentation, immune response and antioxidant indices in dogs...
2017: Journal of Animal Science and Technology
https://www.readbyqxmd.com/read/28501802/stability-of-proteins-in-dried-blood-spot-biobanks
#13
Johan Björkesten, Stefan Enroth, Qiujin Shen, Lotta Wik, David Hougaard, Arieh Cohen, Lene Sörensen, Vilmantas Giedraitis, Martin Ingelsson, Anders Larsson, Masood Kamali-Moghaddam, Ulf Landegren
An important motivation for the construction of biobanks is to discover biomarkers that identify diseases at early, potentially curable stages. This will require biobanks from large numbers of individuals, preferably sampled repeatedly, where the samples are collected and stored under conditions that preserve potential biomarkers. Dried blood samples are attractive for biobanking because of the ease and low cost of collection and storage. Here we have investigated their suitability for protein measurements...
May 13, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28501304/speculations-on-salt-and-the-genesis-of-arterial-hypertension
#14
REVIEW
Jens Titze, Friedrich C Luft
Blood pressure salt sensitivity and salt resistance are mechanistically imperfectly explained. A prescient systems medicine approach by Guyton and colleagues-more than 50 years ago-suggested how salt intake might influence blood pressure. They proposed that a high-salt diet engenders sodium accumulation, volume expansion, cardiac output adjustments, and then autoregulation for flow maintenance. The autoregulation in all vascular beds increases systemic vascular resistance, causing the kidneys to excrete more salt and water, thus reducing systems to normal and minimizing any changes in blood pressure...
June 2017: Kidney International
https://www.readbyqxmd.com/read/28500654/altered-timing-of-riboflavin-and-ultraviolet-light-pathogen-inactivation-improves-platelet-in-vitro-quality
#15
Peter Schubert, Brankica Culibrk, Simrath Karwal, Katherine Serrano, Elena Levin, QiLong Yi, Thomas Thiele, Andreas Greinacher, Susanne Marschner, Dana V Devine
BACKGROUND: The platelet (PLT) storage lesion is in part caused by the collection and/or production process. Pathogen inactivation (PI) further accelerates its development leading to a reduced in vitro PLT functionality and hence quality. Although the treatment of PLT concentrates (PCs) with riboflavin and ultraviolet light PI should occur within 22 hours of collection, in this study the impact of treatment timing on in vitro PLT quality was investigated. STUDY DESIGN AND METHODS: Apheresis PCs were PI treated on the day of production or on Days 1, 3, or 4 of storage or left untreated as control...
May 12, 2017: Transfusion
https://www.readbyqxmd.com/read/28500652/freeze-dried-plasma-enhances-clot-formation-and-inhibits-fibrinolysis-in-the-presence-of-tissue-plasminogen-activator-similar-to-pooled-liquid-plasma
#16
Benjamin R Huebner, Ernest E Moore, Hunter B Moore, Angela Sauaia, Gregory Stettler, Monika Dzieciatkowska, Kirk Hansen, Anirban Banerjee, Christopher C Silliman
BACKGROUND: Systemic hyperfibrinolysis is an integral part of trauma-induced coagulopathy associated with uncontrolled bleeding. Recent data suggest that plasma-first resuscitation attenuates hyperfibrinolysis; however, the availability, transport, storage, and administration of plasma in austere environments remain challenging and have limited its use. Freeze-dried plasma (FDP) is a potential alternative due to ease of storage, longer shelf life, and efficient reconstitution. FDP potentially enhances clot formation and resists breakdown better than normal saline (NS) and albumin and similar to liquid plasma...
May 12, 2017: Transfusion
https://www.readbyqxmd.com/read/28498319/ctc-mrna-ar-v7-analysis-from-blood-samples-impact-of-blood-collection-tube-and-storage-time
#17
Alison W S Luk, Yafeng Ma, Pei N Ding, Francis P Young, Wei Chua, Bavanthi Balakrishnar, Daniel T Dransfield, Paul de Souza, Therese M Becker
Circulating tumour cells (CTCs) are an emerging resource for monitoring cancer biomarkers. New technologies for CTC isolation and biomarker detection are increasingly sensitive, however, the ideal blood storage conditions to preserve CTC-specific mRNA biomarkers remains undetermined. Here we tested the preservation of tumour cells and CTC-mRNA over time in common anticoagulant ethylene-diamine-tetra-acetic acid (EDTA) and acid citrate dextrose solution B (Citrate) blood tubes compared to preservative-containing blood tubes...
May 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28495477/quantification-of-saxitoxin-in-human-blood-by-elisa
#18
Rebekah E Wharton, Melanie C Feyereisen, Andrea L Gonzalez, Nicole L Abbott, Elizabeth I Hamelin, Rudolph C Johnson
Saxitoxin (STX) is a potent marine toxin that causes paralytic shellfish poisoning (PSP) which can result in significant morbidity and mortality in humans. Low lethal doses, rapid onset of PSP symptoms, and brief STX half-life in vivo require sensitive and rapid diagnostic techniques to monitor human exposures. Our laboratory has validated an enzyme-linked immunosorbent assay (ELISA) for quantitative detection of STX from 0.020 to 0.80 ng/mL in human whole blood and from 0.06 to 2.0 ng/mL in dried human blood which is simple, sensitive, rapid, and cost-effective...
May 7, 2017: Toxicon: Official Journal of the International Society on Toxinology
https://www.readbyqxmd.com/read/28494509/estimates-of-total-body-iron-indicate-19-mg-and-38-mg-oral-iron-are-equivalent-for-the-mitigation-of-iron-deficiency-in-individuals-experiencing-repeated-phlebotomy
#19
Walter Bialkowski, Joseph E Kiss, David J Wright, Ritchard Cable, Rebecca Birch, Pam D'Andrea, Barbara J Bryant, Bryan R Spencer, Alan E Mast
Iron deficiency anemia is a common clinical condition often treated with tablets containing 65 mg of elemental iron. Such doses can elicit gastrointestinal side effects lowering patient compliance. Oral iron supplements also increase hepcidin production causing decreased fractional absorption of subsequent doses. Frequent blood donors often become iron deficient. Therefore, they were enrolled in a two-year study involving continued blood donations and randomization to receive no pill, placebo, 19, or 38 mg ferrous gluconate for 60 days...
May 11, 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28489031/effect-of-cold-storage-and-reheating-of-parboiled-rice-on-postprandial-glycaemic-response-satiety-palatability-and-chewed-particle-size-distribution
#20
Louise Weiwei Lu, Bernard Venn, Jun Lu, John Monro, Elaine Rush
Background: Globally, hot cooked refined rice is consumed in large quantities and is a major contributor to dietary glycaemic load. This study aimed to compare the glycaemic potency of hot- and cold-stored parboiled rice to widely available medium-grain white rice. Method: Twenty-eight healthy volunteers participated in a three-treatment experiment where postprandial blood glucose was measured over 120 min after consumption of 140 g of rice. The three rice samples were freshly cooked medium-grain white rice, freshly cooked parboiled rice, and parboiled rice stored overnight at 4 °C...
May 10, 2017: Nutrients
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