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https://www.readbyqxmd.com/read/29778768/prevalence-of-g6pd-deficiency-and-associated-haematological-parameters-in-children-from-botswana
#1
Thato Motshoge, Grace Ababio, Larysa Aleksenko, Sajini Souda, Charles Waithaka Muthoga, Naledi Mutukwa, Leabaneng Tawe, Pleasure Ramatlho, Lesego Gabaitiri, Simon Chihanga, Tjantilili Mosweunyane, Shimeles Hamda, Kentse Moakofhi, Davies Ntebela, Elias Peloewetse, Loeto Mazhani, Jeffrey M Pernica, John Read, Isaac K Quaye, Giacomo Maria Paganotti
Glucose-6-Phosphate Dehydrogenase (G6PD) deficiency is commonly seen in malaria endemic areas as it is known to confer a selective advantage against malaria. Recently, we reported a high proportion of asymptomatic reservoir of Plasmodium vivax in Botswana, that calls for intervention with primaquine to achieve radical cure of vivax malaria. Considering that individuals with this enzyme deficiency are at risk of haemolysis following primaquine treatment, assessment of the population for the relative frequency of G6PD deficiency is imperative...
May 17, 2018: Infection, Genetics and Evolution
https://www.readbyqxmd.com/read/29777755/folic-acid-and-primary-prevention-of-neural-tube-defects-a-review
#2
REVIEW
Jan D van Gool, Herbert Hirche, Hildegard Lax, Luc De Schaepdrijver
With 4 mg folic acid daily, it may take 20 weeks to reach red-blood-cell folate levels between 1,050 and 1,340 nmol/L, optimal for reduction of the neural tube defect risk. Therefore, folic acid supplementation should be started 5-6 months before conception. The residual risk with optimal red-blood-cell folate levels is reportedly 4.5 per 10,000 total births. The residual risk in pooled data from countries with mandatory folic acid fortification is 7.5 per 10,000 pregnancies, regardless of pre-fortification rates...
May 16, 2018: Reproductive Toxicology
https://www.readbyqxmd.com/read/29777311/sufficiency-of-curing-in-high-viscosity-bulk-fill-resin-composites-with-enhanced-opacity
#3
Nicoleta Ilie
OBJECTIVES: The study aims analyzing if improved opacity in modern high-viscosity bulk-fill resin composites (BF-RBC) contradicts with the sufficiency of curing and to assess material's tolerance to less ideal curing conditions. MATERIALS AND METHODS: Simulated large cavities (10 × 6) mm were filled in one increment with three BF-RBCs (Filtek One, FO; Tetric Evo Ceram Bulk Fill, TEC-BF; SonicFill2, SF2). One central and two peripheral (4 mm apart from the center) micromechanical property line-profiles (HV, Vickers hardness; YHU , indentation modulus) were measured in 0...
May 18, 2018: Clinical Oral Investigations
https://www.readbyqxmd.com/read/29776919/behaviour-modification-interventions-to-optimise-red-blood-cell-transfusion-practices-a-systematic-review-and-meta-analysis
#4
Lesley J J Soril, Thomas W Noseworthy, Laura E Dowsett, Katherine Memedovich, Hannah M Holitzki, Diane L Lorenzetti, Henry Thomas Stelfox, David A Zygun, Fiona M Clement
OBJECTIVE: To assess the impact of behaviour modification interventions to promote restrictive red blood cell (RBC) transfusion practices. DESIGN: Systematic review and meta-analysis. SETTING, PARTICIPANTS, INTERVENTIONS: Seven electronic databases were searched to January 2018. Published randomised controlled trials (RCTs) or non-randomised studies examining an intervention to modify healthcare providers' RBC transfusion practice in any healthcare setting were included...
May 18, 2018: BMJ Open
https://www.readbyqxmd.com/read/29776448/anti-plasmodial-activities-of-combretum-molle-combretaceae-zwoo-seed-extract-in-swiss-albino-mice
#5
Merkin Anato, Tsige Ketema
OBJECTIVE: Objective of the study was to evaluate in vivo anti-plasmodial activities of Combretum molle seed extract. METHODS: As a standard protocol, initially the acute toxicity of the plant seed extract was checked following single administration of crude seed extract of the plant at doses 500, 1000 and 2000 mg/kg. This was followed by evaluation of anti-plasmodial activity of crude seed extract of the plant following a 4 days suppressive test. RESULTS: In acute toxicity study sign of toxicity was not observed...
May 18, 2018: BMC Research Notes
https://www.readbyqxmd.com/read/29776419/introduction-of-national-guidelines-for-restrictive-blood-transfusion-threshold-for-hip-fracture-patients-a-consecutive-cohort-study-based-on-complete-follow-up-in-national-databases
#6
Bjarke Viberg, Per Hviid Gundtoft, Jesper Schønnemann, Lasse Pedersen, Lis Røhl Andersen, Kjell Titlestad, Carsten Fladmose Madsen, Jens Lauritsen, Søren Overgaard
BACKGROUND: Randomized controlled trials have demonstrated that a restrictive red blood cell (RBC) transfusion strategy lowers transfusion frequency without affecting mortality. However, the external validity of these trials has not been tested in a large cohort. The purpose was to estimate the effect of introducing a National Clinical Guideline (NCG) for a restrictive hemoglobin transfusion threshold on transfusion frequency and mortality in hip fracture patients > 65 years old...
May 18, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29774145/evaluation-of-attenuative-effect-of-tert-butylhydroquinone-against-diazinon-induced-oxidative-stress-on-hematological-indices-in-male-wistar-rats
#7
Saman Sargazi, Hamidreza Galavi, Sadegh Zarei
Diazinon is an organophosphate toxicant that has been identified to induce oxidative stress within biological systems through altering biochemical and hematological indices, by generating free radicals while deteriorating the cellular antioxidant defense system. The present study was designed to evaluate the effectiveness of tert-butylhydroquinone (TBHQ), a synthetic food additive, in serving as an antioxidant against sub-lethal diazinon-induced oxidative stress in male Wistar rats. Animals were randomly divided into 4 groups: Control (treated with corn oil as a vehicle), diazinon (10 mg/kg/day), TBHQ (0...
June 2018: Biomedical Reports
https://www.readbyqxmd.com/read/29773369/cellulose-based-molecularly-imprinted-red-blood-cell-like-microparticles-for-the-selective-capture-of-cortisol
#8
Koichiro Hayashi, Hikaru Hayashi, Shota Yamada, Wataru Sakamoto, Toshinobu Yogo
Magnetite-nanoparticle-containing red-blood-cell-like-microparticles (M-RBC-MPs) with a selective ability for trapping cortisol (COR) were synthesized by an electrospray technique of a molecularly imprinted ethyl(hydroxyethyl) cellulose (EHEC)-based precursor. The as-synthezied M-RBC-MPs were ∼3-μm-disks with a dent. M-RBC-MPs contained magnetite nanoparticles below 15 nm in diameter, which exhibited magnetization and no room-temperature coercivity. The molecularly imprinted M-RBC-MPs (MI-M-RBC-MPs) passed through pores less than their diameter...
August 1, 2018: Carbohydrate Polymers
https://www.readbyqxmd.com/read/29773000/evaluation-of-antiarthritic-activity-of-butanol-fraction-of-punica-granatum-linn-rind-extract-against-freund-s-complete-adjuvant-induced-arthritis-in-rats
#9
Rupesh Kumar Gautam, Sanjay Sharma, Komal Sharma, Gaurav Gupta
Available conventional drugs produce several side effects; thus, a potent herbal drug is urgently required for the management of rheumatoid arthritis. The present investigation was performed to evaluate the antiarthritic activity of butanol fraction of Punica granatum Linn. rind methanolic extract (PGBF) against Freund's complete adjuvant (FCA)-induced arthritis in rats. An acute toxicity study of butanol fraction was conducted, accompanied by a study of its antiarthritic activity. Chromatography (thin layer chromatography and high-performance thin layer chromatography) analyses were also conducted...
2018: Journal of Environmental Pathology, Toxicology and Oncology
https://www.readbyqxmd.com/read/29770734/post-transfusion-hemoglobin-values-and-patient-blood-management
#10
Jan Moerman, Edith Vermeulen, Mia Van Mullem, Anne-Mie Badts, Peter Lybeert, Veerle Compernolle, Jørgen Georgsen
Objectives The objective of this retrospective study was to evaluate the added value of communicating post-transfusion hemoglobin values to clinicians as a strategy to improve RBC utilization in a 500-bed hospital. Methods The total number of RBC transfusions, the mean number of RBC units transfused per patient, the mean pre- and post-transfusion hemoglobin values, the ratio of patients transfused and the ratio of patients with a post-transfusion hemoglobin > 10.5 g/dL were calculated per service and per department for six months...
May 17, 2018: Acta Clinica Belgica
https://www.readbyqxmd.com/read/29770455/development-validation-and-potential-applications-of-biotinylated-red-blood-cells-for-posttransfusion-kinetics-and-other-physiological-studies-evidenced-based-analysis-and-recommendations
#11
REVIEW
Donald M Mock, Demet Nalbant, Svetlana V Kyosseva, Robert L Schmidt, Guohua An, Nell I Matthews, Alexander P J Vlaar, Robin van Bruggen, Dirk de Korte, Ronald G Strauss, José A Cancelas, Robert S Franco, Peter Veng-Pedersen, John A Widness
The current reference method in the United States for measuring in vivo population red blood cell (RBC) kinetics utilizes chromium-51 (51 Cr) RBC labeling for determining RBC volume, 24-hour posttransfusion RBC recovery, and long-term RBC survival. Here we provide evidence supporting adoption of a method for kinetics that uses the biotin-labeled RBCs (BioRBCs) as a superior, versatile method for both regulatory and investigational purposes. RBC kinetic analysis using BioRBCs has important methodologic, analytical, and safety advantages over 51 Cr-labeled RBCs...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29770452/the-effects-of-blood-transfusion-on-red-blood-cell-distribution-width-in-critically-ill-patients-a-pilot-study
#12
Savino Spadaro, Fabio Silvio Taccone, Alberto Fogagnolo, Federico Franchi, Sabino Scolletta, Riccardo Ragazzi, Alberto Fanni, Elisabetta Marangoni, Maurizio Govoni, Roberto Reverberi, Carlo Alberto Volta
BACKGROUND: Red blood cell distribution width (RDW) is a measure of anisocytosis, generally used in the differential diagnosis of anemia. Recently, RDW was associated with increased mortality in critically ill patients. Red blood cell (RBC) transfusions are potential confounders on RDW values interpretation. The aim of this study was to analyze the changes in RDW after RBC transfusion in intensive care unit (ICU) patients. STUDY DESIGN AND METHODS: This was a prospective, observational study including patients admitted to ICU requiring 1 RBC unit...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29770450/relationship-of-epitope-glycosylation-and-other-properties-of-blood-group-proteins-to-the-immunogenicity-of-blood-group-antigens
#13
John G Howe, Gary Stack
BACKGROUND: The intrinsic properties of polypeptide blood group antigens that determine their relative immunogenicities are unknown. Because size, composition, charge, dose, and epitope glycosylation affect the immunogenicity of other polypeptides, we examined whether similar properties were related to the immunogenicity of blood group antigens. STUDY DESIGN AND METHODS: Amino acid (AA) sequences of antithetical blood group antigens were searched for N- and O-glycosylation sites...
May 16, 2018: Transfusion
https://www.readbyqxmd.com/read/29767673/modeling-the-impact-of-folic-acid-fortification-and-supplementation-on-red-blood-cell-folate-concentrations-and-predicted-neural-tube-defect-risk-in-the-united-states-have-we-reached-optimal-prevention
#14
Krista S Crider, Yan Ping Qi, Owen Devine, Sarah C Tinker, Robert J Berry
Background: The US CDC and the Institute of Medicine recommend that women capable of becoming pregnant consume ≥400 µg synthetic folic acid/d to prevent neural tube defects (NTDs). The United States has 3 sources of folic acid: fortified enriched cereal grain products (ECGPs), fortified ready-to-eat (RTE) cereals, and dietary supplements. Objective: Our objectives were as follows: 1) to estimate the usual daily folic acid intake and distributions of red blood cell (RBC) folate concentrations among women consuming folic acid from different sources; 2) to assess the usual daily total folic acid intake associated with optimal RBC folate concentrations for NTD prevention; 3) to predict NTD prevalence; and 4) to estimate the number of preventable folate-sensitive NTDs...
May 14, 2018: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29760995/intravital-imaging-of-a-pulmonary-endothelial-surface-layer-in-a-murine-sepsis-model
#15
Inwon Park, Kibaek Choe, Howon Seo, Yoonha Hwang, Eunjoo Song, Jinhyo Ahn, You Hwan Jo, Pilhan Kim
Direct intravital imaging of an endothelial surface layer (ESL) in pulmonary microcirculation could be a valuable approach to investigate the role of a vascular endothelial barrier in various pathological conditions. Despite its importance as a marker of endothelial cell damage and impairment of the vascular system, in vivo visualization of ESL has remained a challenging technical issue. In this work, we implemented a pulmonary microcirculation imaging system integrated to a custom-design video-rate laser scanning confocal microscopy platform...
May 1, 2018: Biomedical Optics Express
https://www.readbyqxmd.com/read/29760931/blood-factory-which-stem-cells
#16
Maria Teresa Esposito
Blood transfusions are often essential for treatment of severe anaemia and pregnancy complications. The unavailability of blood is a medical concern, especially in developing countries. New sources of red blood cells (RBC) are under investigation. Several studies have attempted to produce functional RBC from CD34+ haematopoietic stem cells (HSC) isolated from peripheral blood and umbilical cord blood, from embryonic stem cells (ESC) and induced pluripotent stem cells (iPSC). A recent article published in Nature Communications describes a novel model for generating RBC from a stable erythroid cell line obtained from bone marrow CD34+ haematopoietic stem cells (HSC)...
2018: BMC Hematology
https://www.readbyqxmd.com/read/29760729/ceramic-hollow-fibre-constructs-for-continuous-perfusion-and-cell-harvest-from-3d-hematopoietic-organoids
#17
Mark C Allenby, Asma Tahlawi, José C F Morais, Kang Li, Nicki Panoskaltsis, Athanasios Mantalaris
Tissue vasculature efficiently distributes nutrients, removes metabolites, and possesses selective cellular permeability for tissue growth and function. Engineered tissue models have been limited by small volumes, low cell densities, and invasive cell extraction due to ineffective nutrient diffusion and cell-biomaterial attachment. Herein, we describe the fabrication and testing of ceramic hollow fibre membranes (HFs) able to separate red blood cells (RBCs) and mononuclear cells (MNCs) and be incorporated into 3D tissue models to improve nutrient and metabolite exchange...
2018: Stem Cells International
https://www.readbyqxmd.com/read/29758932/blood-rheology-during-normal-pregnancy
#18
Panagiotis Tsikouras, Barbara Niesigk, Georg-Friedrich von Tempelhoff, Werner Rath, Olga Schelkunov, Peter Daragó, Roland Csorba
INTRODUCTION: Recent studies have shown increased RBC aggregation and no difference in plasma viscosity in the presence of markedly lower hematocrit in women at term compared to non-pregnant women. Little is known about the outcome of blood rheological parameters and red blood cell (RBC) deformability particularly in the course of normal pregnancy. METHODS: During a 36 months interval 1.913 blood samples were randomly collected from a total of 945 pregnant women in the course of their pregnancy (n = 1...
2018: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/29756258/a-prospective-analysis-of-circulating-saturated-and-monounsaturated-fatty-acids-and-risk-of-non-hodgkin-lymphoma
#19
Yu-Han Chiu, Kimberly A Bertrand, Shumin Zhang, Francine Laden, Mara M Epstein, Bernard A Rosner, Stephanie Chiuve, Hannia Campos, Edward L Giovannucci, Jorge E Chavarro, Brenda M Birmann
Circulating saturated (SFA) and monounsaturated fatty acids (MUFA), which are predominantly derived from endogenous metabolism, may influence non-Hodgkin lymphoma (NHL) risk by modulating inflammation or lymphocyte membrane stability. However, few biomarker studies have evaluated NHL risk associated with these fats. We conducted a prospective study of 583 incident NHL cases and 583 individually matched controls with archived pre-diagnosis red blood cell (RBC) specimens in the Nurses' Health Study (NHS) and Health Professionals Follow-up Study (HPFS)...
May 14, 2018: International Journal of Cancer. Journal International du Cancer
https://www.readbyqxmd.com/read/29755372/use-of-laser-assisted-optical-rotational-cell-analyzer-lorrca-maxsis-in-the-diagnosis-of-rbc-membrane-disorders-enzyme-defects-and-congenital-dyserythropoietic-anemias-a-monocentric-study-on-202-patients
#20
Anna Zaninoni, Elisa Fermo, Cristina Vercellati, Dario Consonni, Anna P Marcello, Alberto Zanella, Agostino Cortelezzi, Wilma Barcellini, Paola Bianchi
Chronic hemolytic anemias are a group of heterogeneous diseases mainly due to abnormalities of red cell (RBC) membrane and metabolism. The more common RBC membrane disorders, classified on the basis of blood smear morphology, are hereditary spherocytosis (HS), elliptocytosis, and hereditary stomatocytoses (HSt). Among RBC enzymopathies, the most frequent is pyruvate kinase (PK) deficiency, followed by glucose-6-phosphate isomerase, pyrimidine 5' nucleotidase P5'N, and other rare enzymes defects. Because of the rarity and heterogeneity of these diseases, diagnosis may be often challenging despite the availability of a variety of laboratory tests...
2018: Frontiers in Physiology
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