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Nucleated red blood cells

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https://www.readbyqxmd.com/read/27917462/iron-overload-across-the-spectrum-of-non-transfusion-dependent-thalassaemias-role-of-erythropoiesis-splenectomy-and-transfusions
#1
John B Porter, Maria Domenica Cappellini, Antonis Kattamis, Vip Viprakasit, Khaled M Musallam, Zewen Zhu, Ali T Taher
Non-transfusion-dependent thalassaemias (NTDT) encompass a spectrum of anaemias rarely requiring blood transfusions. Increased iron absorption, driven by hepcidin suppression secondary to erythron expansion, initially causes intrahepatic iron overload. We examined iron metabolism biomarkers in 166 NTDT patients with β thalassaemia intermedia (n = 95), haemoglobin (Hb) E/β thalassaemia (n = 49) and Hb H syndromes (n = 22). Liver iron concentration (LIC), serum ferritin (SF), transferrin saturation (TfSat) and non-transferrin-bound iron (NTBI) were elevated and correlated across diagnostic subgroups...
December 5, 2016: British Journal of Haematology
https://www.readbyqxmd.com/read/27896557/cytotoxic-and-apoptotic-activities-of-extract-of-amaranthus-spinosus-l-in-allium-cepa-and-human-erythrocytes
#2
V Prajitha, J E Thoppil
The present study examined the apoptosis inducing effects of Amaranthus spinosus L. aqueous extract in Allium cepa root meristematic cells and human erythrocytes. Cytogenetic assay revealed many apoptosis inducing cytogenetic aberrations viz., cytoplasmic breakage, cytoplasmic disintegration, cytoplasmic shrinkage, receding of cytoplasm, cytoplasmic vacuolation, enucleated cell, ghost cell, nuclear vacuolation, nuclear fragmentation and nuclear disintegration. A remarkable modification of red blood cell surface morphology was observed in the result of RBC assay...
November 28, 2016: Cytotechnology
https://www.readbyqxmd.com/read/27882072/radix-astragali-stimulates-p38-mark-phosphorylation-in-pediatric-patients-with-%C3%AE-thalassemia
#3
Zhuoming Lu, Xinhua Qian, Chunhong Zhang, Zhiwen Chen, Guangliang Du
A previous study conducted by our group demonstrated that Radix Astragali compounded with Codonopsis pilosula and Plastrum testudinis was effective in treating pediatric β-thalassemia in a randomized, controlled clinical trial. However, the mechanism of action that underpins this treatment remains to be elucidated. Blood was collected from patients participating in this clinical trial and nucleated red blood cell-enriched mononuclear cells were isolated to facilitate the extraction of RNA and protein. RT-PCR was used to monitor the expression of globin genes and p38 MAPK, and total and phosphorylated p38 MAPK expression was assessed using Western blot analysis...
2016: Evidence-based Complementary and Alternative Medicine: ECAM
https://www.readbyqxmd.com/read/27872769/mantle-cell-hyperplasia-of-peripheral-lymph-nodes-as-initial-manifestation-of-sickle-cell-disease
#4
Ahmad Monabbati, Sadat Noori, Akbar Safaei, Mani Ramzi, Seyedsajjad Eghbali, Ali Adib
Sickle cell disease (SCD) is a well known hemoglobinopathy with usual manifestations including anemia, hyperbilirubinemia, and vasoocclusive complications. Despite presence of mild splenomegaly in early phase of the disease, lymphadenopathy is not an often finding of SCD. We introduce an undiagnosed case of SCD who presented in third decade of his life with multiple cervical lymphadenopathies and mild splenomegaly persistent for about five years. Histopathologic examination of the resected lymph nodes showed expansion of the mantle cell layers of secondary follicles as well as several monomorphic mantle cell nodules...
2016: Case Reports in Hematology
https://www.readbyqxmd.com/read/27850251/612-red-cell-distribution-width-is-associated-with-nucleated-red-blood-cells-in-surgical-icu-patients
#5
Tiffany Otero, Andrea Tsai, Daniel Yeh, Ruben Azocar, Donna Belcher, Sadeq Quraishi
No abstract text is available yet for this article.
December 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27843454/localisation-of-lactate-transporters-in-rat-and-rabbit-placentae
#6
Nigel P Moore, Catherine A Picut, Jeffrey H Charlap
The distribution of monocarboxylate transporter (MCT) isoforms 1 and 4, which mediate the plasmalemmal transport of l-lactic and pyruvic acids, has been identified in the placentae of rats and rabbits at different ages of gestation. Groups of three pregnant Sprague-Dawley rats and New Zealand White rabbits were sacrificed on gestation days (GD) 11, 14, 18, or 20 and on GD 13, 18, or 28, respectively. Placentae were removed and processed for immunohistochemical detection of MCT1 and MCT4. In the rat, staining for MCT1 was associated with lakes and blood vessels containing enucleated red blood cells (maternal vessels) while staining for MCT4 was associated with vessels containing nucleated red blood cells (embryofoetal vessels)...
2016: International Journal of Cell Biology
https://www.readbyqxmd.com/read/27809621/nucleated-red-blood-cells-count-as-a-prognostic-biomarker-in-predicting-the-complications-of-asphyxia-in-neonates
#7
Hassan Boskabadi, Maryam Zakerihamidi, Mohammad Hadi Sadeghian, Amir Avan, Majid Ghayour-Mobarhan, Gordon A Ferns
OBJECTIVE: Nucleated-red-blood-cells (NRBC) count in umbilical cord of newborns is been suggested as a sign of birth asphyxia. The present study was conducted to explore the value of NRBC count in prognosis of asphyxiated neonates. METHODS: sixty-three neonates with asphyxia were followed up for two years. Maternal and neonatal information was recorded follow by clinical and laboratory evaluation. NRBC-level was determined per 100 white-blood-cells (WBC). After discharge, follow-up of asphyxiated infants was performed using Denver II test at 6, 12, 18 and 24 months...
November 3, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27802412/cytographic-changes-on-bc-6800-haematological-analyzer-related-to-the-presence-of-candida-albicans-in-peripheral-blood-a-new-tool-to-suspect-candidemia
#8
Antonio La Gioia, Alessandra Devito, Fabiana Fiorini, Maria Bombara, Patrizia Isola, Barbara Spinale, Lucia Francioni, Domenico Salamone, Paola Marelli, Sabrina Buoro, Marcello Fiorini
BACKGROUND: We studied the quantitative and cytographic changes that the presence of Candida albicans (C. albicans) in peripheral blood (PB) samples causes on the Mindray BC-6800 Haematological Analyzer. METHODS: A simulated in vitro candidemia was obtained by adding a different amount of C. albicans to discarded remnants of PB samples. Quantitative data and cytographic features were evaluated immediately as well as after 120 and 240 min of the yeast addition...
October 31, 2016: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/27795297/e2f-2-promotes-nuclear-condensation-and-enucleation-of-terminally-differentiated-erythroblasts
#9
Kelsey L Swartz, Scott N Wood, Tushar Murthy, Oscar Ramirez, Gangjian Qin, Manoj M Pillai, Sridhar Rao, Alex C Minella
E2F-2 is a Retinoblastoma (Rb)-regulated transcription factor induced during terminal erythroid maturation. Cyclin E-mediated Rb hyper-phosphorylation induces E2F transcriptional activator functions. We previously reported that deregulated cyclin E activity causes defective terminal maturation of nucleated erythroblasts in vivo. Here, we find these defects are normalized by E2F-2 deletion; however, anemia in mice with deregulated cyclin E is not improved by E2F-2-loss, which itself causes reduced peripheral red blood cell (RBC) counts, without altering relative abundances of erythroblast subpopulations...
October 17, 2016: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/27751864/evaluation-of-the-lh780-hematology-analyzer-for-detection-and-therapeutic-monitoring-of-malaria-cross-reactivity-with-nucleated-rbcs
#10
Jung Yoon, Seung Gyu Yun, Jeeyong Kim, Yoo Na Jung, Young Eun Koh, Jeong Hun Nam, Eun Taek Han, Chae Seung Lim
We evaluated the diagnostic usefulness of the LH780 Coulter blood cell counter for detection and therapeutic monitoring of malaria including cross-reactivity with nucleated RBC (NRBC) samples. A total of 405 patients (43 patients with Plasmodium vivax malaria and the control group of 120 healthy subjects, 111 patients with fever, and 131 patients with NRBCs) were analyzed with routine CBC using the LH780. We analyzed the CBC results according to three selected parameters: an abnormal peak in the WBC histogram before 35fL, the presence of red dots in the nonwhite cell zone of 2D WBC Diff Dataplot, and platelet-related flags suggesting platelet clumps or giant platelets...
October 14, 2016: Acta Tropica
https://www.readbyqxmd.com/read/27690727/cord-blood-erythropoietin-and-cord-blood-nucleated-red-blood-cells-for-prediction-of-adverse-neonatal-outcome-associated-with-maternal-obesity-in-term-pregnancy-prospective-cohort-study
#11
Mahmoud H Ibrahim, Asmaa N Moustafa, Ahmed A Fadil Saedii, Ebtesam E Hassan
OBJECTIVE: To determine the adverse pregnancy outcomes associated with maternal prepregnancy overweight and obesity and we measure cord blood erythropoietin and NRBC count as indices of hypoxia and predictors of neonatal outcome. STUDY DESIGN: This prospective cohort study was done in Minia University Hospital, carried out from May 2015 to April 2016.270 full term neonates born to mothers of various body mass indices were included .Excluded were neonates with major factors known to be associated with a potential increase in fetal erythropoiesis...
October 3, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27687885/characterizing-the-hypomethylated-dna-methylation-profile-of-nucleated-red-blood-cells-from-cord-blood
#12
Olivia M de Goede, Pascal M Lavoie, Wendy P Robinson
AIM: To provide insight into fetal nucleated red blood cell (nRBC) development using genome-wide DNA methylation (DNAm) profiling. MATERIALS & METHODS: The DNAm profile (Illumina 450K array) of cord blood (n = 7) derived nRBCs was compared with B cells, CD4 and CD8 T cells, natural killer cells, granulocytes, monocytes and placenta (n = 5). RESULTS: nRBCs and placenta had similarly low array-wide DNAm compared with white blood cells, but their patterns of hypomethylation differed at biologically relevant subsets of the array...
September 30, 2016: Epigenomics
https://www.readbyqxmd.com/read/27668573/validation-of-a-dna-methylation-reference-panel-for-the-estimation-of-nucleated-cells-types-in-cord-blood
#13
Andres Cardenas, Catherine Allard, Myriam Doyon, E Andres Houseman, Kelly M Bakulski, Patrice Perron, Luigi Bouchard, Marie-France Hivert
Cord blood is widely used as surrogate tissue in epigenome-wide association studies of prenatal conditions. Cell type composition variation across samples can be an important confounder of epigenome-wide association studies in blood that constitute a mixture of cells. We evaluated a newly developed cord blood reference panel to impute cell type composition from DNA methylation levels, including nucleated red blood cells (nRBCs). We estimated cell type composition from 154 unique cord blood samples with available DNA methylation data as well as direct measurements of nucleated cell types...
September 26, 2016: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/27640156/a-reliable-method-for-enrichment-of-neutrophils-from-peripheral-blood-in-barramundi-lates-calcarifer
#14
Kelly-Anne Masterman, Andrew C Barnes
Neutrophils are a short-lived, terminally differentiated, innate immune cell, that are critical first responders during infection. Research into neutrophil-pathogen interactions in fish has primarily employed cells derived from the pro-nephros and nephros. Since these sites are also the location of neutrophil and other immune cell development, there may be some ambiguity in maturation and functional ability of these cells, and difficulty in differentiating the effects of neutrophils from those of macrophages and monocytes...
September 15, 2016: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/27628059/analytical-evaluation-for-somatic-mutation-detection-in-circulating-tumor-cells-isolated-using-a-lateral-magnetophoretic-microseparator
#15
Hyungseok Cho, Jinho Kim, Song-I Han, Ki-Ho Han
CTCs are currently in the spotlight because provide comprehensive genetic information that enables monitoring of the evolution of cancer and selection of appropriate therapeutic strategies that cannot be obtained from a single-site tumor biopsy. Despite their importance, current techniques for isolating CTCs are limited in terms of their ability to yield high-quality CTCs from peripheral blood for use in profiling cancer genetic mutations by DNA sequencing technologies. This paper introduces a lateral magnetophoretic microseparator (the 'CTC-μChip') for isolating highly pure CTCs from blood, which facilitates the detection of somatic mutations in isolated CTCs...
October 2016: Biomedical Microdevices
https://www.readbyqxmd.com/read/27616633/evidence-for-feasibility-of-fetal-trophoblastic-cell-based-noninvasive-prenatal-testing
#16
Amy M Breman, Jennifer C Chow, Lance U'Ren, Elizabeth A Normand, Sadeem Qdaisat, Li Zhao, David M Henke, Rui Chen, Chad A Shaw, Laird Jackson, Yaping Yang, Liesbeth Vossaert, Rachel H V Needham, Elizabeth J Chang, Daniel Campton, Jeffrey L Werbin, Ron C Seubert, Ignatia B Van den Veyver, Jackie L Stilwell, Eric P Kaldjian, Arthur L Beaudet
OBJECTIVE: The goal was to develop methods for detection of chromosomal and subchromosomal abnormalities in fetal cells in the mother's circulation at 10-16 weeks' gestation using analysis by array comparative genomic hybridization (CGH) and/or next-generation sequencing (NGS). METHOD: Nucleated cells from 30 mL of blood collected at 10-16 weeks' gestation were separated from red cells by density fractionation and then immunostained to identify cytokeratin positive and CD45 negative trophoblasts...
November 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27598359/fat-embolism-syndrome-secondary-to-bone-marrow-necrosis-in-patients-with-hemoglobinopathies
#17
Radhika Gangaraju, Vishnu V B Reddy, Marisa B Marques
Bone marrow necrosis with subsequent embolization of the fat and necrotic tissues into the systemic circulation causing fat embolism syndrome and multiorgan failure is a rare complication of patients with hemoglobinopathies. The exact etiology of this condition is not known. Because it occurs more often in patients with compound heterozygous conditions than in sickle cell disease, some patients are unaware of their predisposition. The initial symptoms are nonspecific, such as back and/or abdominal pain, fever, and fatigue, which may rapidly progress to respiratory failure and severe neurologic compromise...
September 2016: Southern Medical Journal
https://www.readbyqxmd.com/read/27545617/implementing-a-routine-flow-cytometry-assay-for-nucleated-red-blood-cell-counts-in-cord-blood-units
#18
C Simard, M Cloutier, C Jobin, J Dion, D Fournier, S Néron
INTRODUCTION: As required by standards organizations, Héma-Québec Cord Blood Bank performs enumeration of nucleated red blood cells (NRBCs) in cord blood units (CBUs). This study presents the validation and implementation approaches developed to transfer the routine NRBC enumeration from the manual blood film method to a flow cytometric assay. METHODS: The flow cytometry method was adapted from Tsuji (Cytometry, 37, 1999, 291). This assay was validated to assess the specificity, detection limit, repeatability, and reproducibility of the method, including interoperator and interlaboratory testing...
December 2016: International Journal of Laboratory Hematology
https://www.readbyqxmd.com/read/27537858/placental-pathology-and-outcome-after-perinatal-asphyxia-and-therapeutic-hypothermia
#19
C M C Frank, P G J Nikkels, J C Harteman, I C van Haastert, M J N L Benders, C Koopman-Esseboom, L S de Vries, F Groenendaal
OBJECTIVE: To assess the relationship between placental pathology, pattern of brain injury and neurodevelopmental outcome in term infants with perinatal asphyxia receiving therapeutic hypothermia. STUDY DESIGN: Studies were performed in 76 infants. Death or survival with impairments at 18 to 24 months was used as a composite adverse outcome. Multivariable analysis was performed. RESULTS: Among the 75 infants analyzed, the predominant pattern of brain injury was: no injury (n=27), a white matter/watershed pattern (n=14), basal-ganglia-thalamic injury (n=13) or near-total brain injury (n=21)...
August 18, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27522442/elevated-nucleated-red-blood-cells-at-birth-predict-hemodynamically-significant-patent-ductus-arteriosus
#20
Alona Bin-Nun, Francis B Mimouni, Daniel Fink, Hen Sela, Cathy Hammerman
We hypothesized that postnatal absolute nucleated red blood cell (aNRBC) counts would be elevated in premature infants with hemodynamically significant patent ductus arteriosus (PDA), reflecting intrauterine hypoxia. PDA severity was assessed and categorized echocardiographically. aNRBC counts were significantly correlated with ductal severity (Pearson correlation: P = .007). At the extremes, aNRBC levels were 3770 (728, 6015) hemodynamically significant PDA vs 865 (483, 2528) closed ductus.
October 2016: Journal of Pediatrics
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