Reticulocytes
Immature ERYTHROCYTES. In humans, these are ERYTHROID CELLS that have just undergone extrusion of their CELL NUCLEUS. They still contain some organelles that gradually decrease in number as the cells mature. RIBOSOMES are last to disappear. Certain staining techniques cause components of the ribosomes to precipitate into characteristic "reticulum" (not the same as the ENDOPLASMIC RETICULUM), hence the name reticulocytes.
Reticulocyte Count
Rabbits
Protein Biosynthesis
Cell-Free System
A fractionated cell extract that maintains a biological function. A subcellular fraction isolated by ultracentrifugation or other separation techniques must first be isolated so that a process can be studied free from all of the complex side reactions that occur in a cell. The cell-free system is therefore widely used in cell biology. (From Alberts et al., Molecular Biology of the Cell, 2d ed, p166)
Peptide Initiation Factors
Erythropoiesis
The production of red blood cells (ERYTHROCYTES). In humans, erythrocytes are produced by the YOLK SAC in the first trimester; by the liver in the second trimester; by the BONE MARROW in the third trimester and after birth. In normal individuals, the erythrocyte count in the peripheral blood remains relatively constant implying a balance between the rate of erythrocyte production and rate of destruction.
Globins
Erythrocyte Aging
Erythrocytes
Hemin
Peptide Chain Initiation, Translational
A process of GENETIC TRANSLATION whereby the formation of a peptide chain is started. It includes assembly of the RIBOSOME components, the MESSENGER RNA coding for the polypeptide to be made, INITIATOR TRNA, and PEPTIDE INITIATION FACTORS; and placement of the first amino acid in the peptide chain. The details and components of this process are unique for prokaryotic protein biosynthesis and eukaryotic protein biosynthesis.
Phenylhydrazines
Ribosomes
Anemia, Sickle Cell
Polyribosomes
A multiribosomal structure representing a linear array of RIBOSOMES held together by messenger RNA; (RNA, MESSENGER); They represent the active complexes in cellular protein synthesis and are able to incorporate amino acids into polypeptides both in vivo and in vitro. (From Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
RNA, Messenger
RNA sequences that serve as templates for protein synthesis. Bacterial mRNAs are generally primary transcripts in that they do not require post-transcriptional processing. Eukaryotic mRNA is synthesized in the nucleus and must be exported to the cytoplasm for translation. Most eukaryotic mRNAs have a sequence of polyadenylic acid at the 3' end, referred to as the poly(A) tail. The function of this tail is not known for certain, but it may play a role in the export of mature mRNA from the nucleus as well as in helping stabilize some mRNA molecules by retarding their degradation in the cytoplasm.
Hemoglobins
Transferrin
Erythropoietin
Heme
Receptors, Transferrin
Erythroblasts
Eukaryotic Initiation Factor-2
Reticulocytosis
Fetal Hemoglobin
The major component of hemoglobin in the fetus. This HEMOGLOBIN has two alpha and two gamma polypeptide subunits in comparison to normal adult hemoglobin, which has two alpha and two beta polypeptide subunits. Fetal hemoglobin concentrations can be elevated (usually above 0.5%) in children and adults affected by LEUKEMIA and several types of ANEMIA.
Ubiquitins
Thalassemia
Micronuclei, Chromosome-Defective
Iron
Blood Cell Count
Electrophoresis, Polyacrylamide Gel
Blood Proteins
Anemia, Hemolytic
Erythrocyte Membrane
Puromycin
Peptide Biosynthesis
The production of PEPTIDES or PROTEINS by the constituents of a living organism. The biosynthesis of proteins on RIBOSOMES following an RNA template is termed translation (TRANSLATION, GENETIC). There are other, non-ribosomal peptide biosynthesis (PEPTIDE BIOSYNTHESIS, NUCLEIC ACID-INDEPENDENT) mechanisms carried out by PEPTIDE SYNTHASES and PEPTIDYLTRANSFERASES. Further modifications of peptide chains yield functional peptide and protein molecules.
RNA, Transfer, Amino Acyl
Heinz Bodies
Bloodletting
Hemoglobins, Abnormal
Hematocrit
Lipoxygenase
Arachidonate 15-Lipoxygenase
Anemia, Hypochromic
Anemia characterized by a decrease in the ratio of the weight of hemoglobin to the volume of the erythrocyte, i.e., the mean corpuscular hemoglobin concentration is less than normal. The individual cells contain less hemoglobin than they could have under optimal conditions. Hypochromic anemia may be caused by iron deficiency from a low iron intake, diminished iron absorption, or excessive iron loss. It can also be caused by infections or other diseases, therapeutic drugs, lead poisoning, and other conditions. (Stedman, 25th ed; from Miale, Laboratory Medicine: Hematology, 6th ed, p393)
Molecular Sequence Data
Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.
Base Sequence
Peptide Chain Elongation, Translational
Erythrocytes, Abnormal
Poly A
Micronucleus Tests
eIF-2 Kinase
A dsRNA-activated cAMP-independent protein serine/threonine kinase that is induced by interferon. In the presence of dsRNA and ATP, the kinase autophosphorylates on several serine and threonine residues. The phosphorylated enzyme catalyzes the phosphorylation of the alpha subunit of EUKARYOTIC INITIATION FACTOR-2, leading to the inhibition of protein synthesis.
RNA, Transfer
The small RNA molecules, 73-80 nucleotides long, that function during translation (TRANSLATION, GENETIC) to align AMINO ACIDS at the RIBOSOMES in a sequence determined by the mRNA (RNA, MESSENGER). There are about 30 different transfer RNAs. Each recognizes a specific CODON set on the mRNA through its own ANTICODON and as aminoacyl tRNAs (RNA, TRANSFER, AMINO ACYL), each carries a specific amino acid to the ribosome to add to the elongating peptide chains.
Centrifugation, Density Gradient
Erythrocyte Indices
Spherocytosis, Hereditary
Amino Acid Sequence
Aurintricarboxylic Acid
RNA, Transfer, Met
Peptide Hydrolases
Erythroid Precursor Cells
The cells in the erythroid series derived from MYELOID PROGENITOR CELLS or from the bi-potential MEGAKARYOCYTE-ERYTHROID PROGENITOR CELLS which eventually give rise to mature RED BLOOD CELLS. The erythroid progenitor cells develop in two phases: erythroid burst-forming units (BFU-E) followed by erythroid colony-forming units (CFU-E); BFU-E differentiate into CFU-E on stimulation by ERYTHROPOIETIN, and then further differentiate into ERYTHROBLASTS when stimulated by other factors.
Triticum
Anemia, Macrocytic
RNA Caps
Nucleic acid structures found on the 5' end of eukaryotic cellular and viral messenger RNA and some heterogeneous nuclear RNAs. These structures, which are positively charged, protect the above specified RNAs at their termini against attack by phosphatases and other nucleases and promote mRNA function at the level of initiation of translation. Analogs of the RNA caps (RNA CAP ANALOGS), which lack the positive charge, inhibit the initiation of protein synthesis.
Proteins
Linear POLYPEPTIDES that are synthesized on RIBOSOMES and may be further modified, crosslinked, cleaved, or assembled into complex proteins with several subunits. The specific sequence of AMINO ACIDS determines the shape the polypeptide will take, during PROTEIN FOLDING, and the function of the protein.
RNA
A polynucleotide consisting essentially of chains with a repeating backbone of phosphate and ribose units to which nitrogenous bases are attached. RNA is unique among biological macromolecules in that it can encode genetic information, serve as an abundant structural component of cells, and also possesses catalytic activity. (Rieger et al., Glossary of Genetics: Classical and Molecular, 5th ed)
Guanosine Triphosphate
Anemia, Hemolytic, Autoimmune
Protein Kinases
Iron Isotopes
Adenosine Triphosphate
Peptide Elongation Factors
Iron Radioisotopes
Hemoglobin, Sickle
Macromolecular Substances
Chromatography, DEAE-Cellulose
Anemia, Neonatal
Hemolysis
Encephalomyocarditis virus
Erythrocyte Volume
Studies on a nonpolysomal ribonucleoprotein coding for myosin heavy chains from chick embryonic muscles. (1/2686)
A messenger ribonucleoprotein (mRNP) particle containing the mRNA coding for the myosin heavy chain (MHC mRNA) has been isolated from the postpolysomal fraction of homogenates of 14-day-old chick embryonic muscles. The mRNP sediments in sucrose gradient as 120 S and has a characteristic buoyant density of 1.415 g/cm3, which corresponds to an RNA:protein ratio of 1:3.8. The RNA isolated from the 120 S particle behaved like authentic MHC mRNA purified from chick embryonic muscles with respect to electrophoretic mobility and ability to program the synthesis of myosin heavy chain in a rabbit reticulocyte lysate system as judged by multi-step co-purification of the in vitro products with chick embryonic leg muscle myosin added as carrier. The RNA obtained from the 120 S particle was as effective as purified MHC mRNA in stimulating the synthesis of the complete myosin heavy chains in rabbit reticulocyte lysate under conditions where non-muscle mRNAs had no such effect. Analysis of the protein moieties of the 120 S particle by sodium dodecyl sulfate-polyacrylamide gel electrophoresis shows the presence of seven distinct polypeptides with apparent molecular weights of 44,000, 49,000, 53,000, 81,000, 83,000, and 98,000, whereas typical ribosomal proteins are absent. These results indicate that the 120 S particles are distinct cellular entities unrelated to ribosomes or initiation complexes. The presence of muscle-specific mRNAs as cytoplasmic mRNPs suggests that these particles may be involved in translational control during myogenesis in embryonic muscles. (+info)Purification and characterization of initiation factor IF-E2 from rabbit reticulocytes. (2/2686)
Initiation factor IF-E2 was isolated from rabbit reticulocytes and purified 120-fold to near homogeneity by ammonium sulfate fractionation, column chromatography on DEAE-cellulose and phosphocellulose, and, when suitable, by sucrose density gradient centrifugation. The factor is a complex protein containing three nonidentical polypeptides of molecular weight 57,000, 52,000, and 36,000. It behaves as a complex throughout its purification and during polyacrylamide gel electrophoresis in nondenaturing buffer but its thress components are readily separated by electrophoresis in denaturing buffers. None of its components corresponds to any of the polypeptides of the other initiation factors or to any proteins of ribosomes washed in buffers containing a high salf concentration. A stoichiometric ratio of 1:1:1 was determined for the three polypeptides; based on the assumption of one copy each per complex, the calculated factor molecular weight is 145,000, a value in agreement with the measured value of 160,000. Initiation factor IF-E2 was radioactively labeled in vitro by reductive alkylation or by phosphorylation with a protein kinase also isolated from rabbit reticulocytes. Neither procedure causes a measurable change in the ability of the factor to form a ternary complex with GTP and the initiator methionyl-tRNA. 5'-Guanylyl-methylenediphosphonate may substitute for GTP, but only at relatively high concentrations. The binding of labeled initiation factor IF-E2 and methionyl-tRNA to the 40 S ribosomal subunit was studied by sucrose density gradient centrifugation. Appreciable binding of the factor is seen only when all three components of the ternary complex are included in the reaction mixture. The binding of either the factor or methionyl-tRNA was not stimulated by the addition of globin messenger RNA and initiation factor IF-E3. It was shown that all three polypeptide components of initiation factor IF-E2 are bound to these nascent initiation complexes. (+info)BE-31405, a new antifungal antibiotic produced by Penicillium minioluteum. I. Description of producing organism, fermentation, isolation, physico-chemical and biological properties. (3/2686)
A new antifungal antibiotic, BE-31405, was isolated from the culture broth of a fungal strain, Penicillium minioluteum F31405. BE-31405 was isolated by adsorption on high porous polymer resin (Diaion HP-20), followed by solvent extraction, precipitation and crystallization. BE-31405 showed potent growth inhibitory activity against pathogenic fungal strains such as Candida albicans, Candida glabrata and Cryptococcus neoformans, but did not show cytotoxic activity against mammalian cells such as P388 mouse leukemia. The mechanism studies indicated that BE-31405 inhibited the protein synthesis of C. albicans but not of mammalian cells. (+info)unr, a cellular cytoplasmic RNA-binding protein with five cold-shock domains, is required for internal initiation of translation of human rhinovirus RNA. (4/2686)
Initiation of translation of the animal picornavirus RNAs occurs via a mechanism of direct ribosome entry, which requires a segment of the 5' UTR of the RNA, known as the internal ribosome entry site (IRES). In addition, translation of the enterovirus and rhinovirus (HRV) subgroups requires cellular trans-acting factors that are absent from, or limiting in rabbit reticulocytes, but are more abundant in HeLa cell extracts. It has been shown previously that HeLa cells contain two separable activities, each of which independently stimulates HRV IRES-dependent translation when used to supplement reticulocyte lysate; one of these activities was identified as polypyrimidine tract-binding protein (PTB). Here, the purification of the second activity is achieved by use of an RNA-affinity column based on the HRV 5' UTR. It comprises two components: a 38-kD protein (p38), which is a novel member of the GH-WD repeat protein family and has no intrinsic RNA-binding activity; and a 96- to 97-kD protein doublet, which was identified as unr, an RNA-binding protein with five cold-shock domains. Coimmunoprecipitation with antibodies against either protein shows that the two proteins interact with each other, and thus p38 is named unrip (unr-interacting protein). Recombinant unr acts synergistically with recombinant PTB to stimulate translation dependent on the rhinovirus IRES. In contrast, unr did not significantly augment the PTB-dependent stimulation of poliovirus IRES activity. (+info)Cell-free immunology: construction and in vitro expression of a PCR-based library encoding a single-chain antibody repertoire. (5/2686)
A novel cloning-independent strategy has been developed to generate a combinatorial library of PCR fragments encoding a murine single-chain antibody repertoire and express it directly in a cell-free system. The new approach provides an effective alternative to the techniques involving in vivo procedures of preparation and handling large libraries of antibodies. The possible use of the described strategy in the ribosome display is discussed. (+info)Gbeta5 prevents the RGS7-Galphao interaction through binding to a distinct Ggamma-like domain found in RGS7 and other RGS proteins. (6/2686)
The G protein beta subunit Gbeta5 deviates significantly from the other four members of Gbeta-subunit family in amino acid sequence and subcellular localization. To detect the protein targets of Gbeta5 in vivo, we have isolated a native Gbeta5 protein complex from the retinal cytosolic fraction and identified the protein tightly associated with Gbeta5 as the regulator of G protein signaling (RGS) protein, RGS7. Here we show that complexes of Gbeta5 with RGS proteins can be formed in vitro from the recombinant proteins. The reconstituted Gbeta5-RGS dimers are similar to the native retinal complex in their behavior on gel-filtration and cation-exchange chromatographies and can be immunoprecipitated with either anti-Gbeta5 or anti-RGS7 antibodies. The specific Gbeta5-RGS7 interaction is determined by a distinct domain in RGS that has a striking homology to Ggamma subunits. Deletion of this domain prevents the RGS7-Gbeta5 binding, although the interaction with Galpha is retained. Substitution of the Ggamma-like domain of RGS7 with a portion of Ggamma1 changes its binding specificity from Gbeta5 to Gbeta1. The interaction of Gbeta5 with RGS7 blocked the binding of RGS7 to the Galpha subunit Galphao, indicating that Gbeta5 is a specific RGS inhibitor. (+info)Human molybdopterin synthase gene: identification of a bicistronic transcript with overlapping reading frames. (7/2686)
A universal molybdenum-containing cofactor (MoCo) is essential for the activity of all human molybdoenzymes, including sulphite oxidase. The free cofactor is highly unstable, and all organisms share a similar biosynthetic pathway. The involved enzymes exhibit homologies, even between bacteria and humans. We have exploited these homologies to isolate a cDNA for the heterodimeric molybdopterin (MPT)-synthase. This enzyme is necessary for the conversion of an unstable precursor into molybdopterin, the organic moiety of MoCo. The corresponding transcript shows a bicistronic structure, encoding the small and large subunits of the MPT-synthase in two different open reading frames (ORFs) that overlap by 77 nucleotides. In various human tissues, only one size of mRNA coinciding with the bicistronic transcript was detected. In vitro translation and mutagenesis experiments demonstrated that each ORF is translated independently, leading to the synthesis of a 10-kDa protein and a 21-kDa protein for the small and large subunits, respectively, and indicated that the 3'-proximal ORF of the bicistronic transcript is translated by leaky scanning. (+info)Evidence for and consequences of chronic heme deficiency in Belgrade rat reticulocytes. (8/2686)
The Belgrade rat has a microcytic, hypochromic anemia inherited as an autosomal recessive trait (gene symbol b). Transferrin-dependent iron uptake is defective because of a mutation in Nramp2 (now DMT1, also called DCT1), the protein responsible for endosomal iron efflux. Hence, Belgrade reticulocytes are iron deficient. We show that a chromatographic method is able to measure the amount of 'free' heme in reticulocytes. Most of the 'free' heme is the result of biosynthesis. Succinylacetone, an inhibitor of heme synthesis, decreases the level of 'free' heme and cycloheximide, an inhibitor of globin synthesis, increases the 'free' heme level. In a pulse-chase experiment with 59Fe-transferrin, the 'free' heme pool behaves as an intermediate, with a half-life of just over 2 h. Belgrade reticulocytes contain about 40% as much 'free' heme as do heterozygous or homozygous reticulocytes. This deficiency of 'free' heme slows initiation of translation in Belgrade reticulocytes by increasing the level of an inhibitor of initiation. Thus the Belgrade rat makes a whole animal model available with chronic heme deficiency. (+info)Degradation of RNA in rat reticulocytes. I. Purification and properties of rat reticulocyte RNase<...
Flexi® Rabbit Reticulocyte Lysate System
Reticulocyte - Wikipedia
reticulocytes: Definition, Word Game Analysis
The Structure and Composition of Rat Reticulocytes. II. Phospholipid and Total Cholesterol in Reticulocytes | Blood | American...
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Polychromatophilia
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CD71 antibodies, human - Primary antibodies - Antibodies - MACS Flow Cytometry - Products - Miltenyi Biotec - España
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Haemoglobin synthesis in reticulocytes of prenatal f/f anaemic mice. by R J. Cole, T Regan et al.
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Reticulocytes
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CSHL Library
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Retic Count
Pentra XLR - HORIBA
The effect of puromycin on rabbit reticulocyte ribosomes.<...
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Reticulocyte Count
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S Anand
PERHIMPUNAN REUMATOLOGI INDONESIA::.
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Activity and heat-stability of peptidase activity in cell-free extracts of rabbit reticulocytes and erythrocytes: effects of...
Biological characterization of various forms of elongation factor 1 from rabbit reticulocytes. - PubMed - NCBI
R&D Retic gb
Enumeration of Fetal Red Blood Cells, F Cells, and F Reticulocytes in Human Blood - Current Protocols in Cytometry - Davis -...
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Reticulocytes
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rat Metap2 protein
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Reticulocyte
Calculating the reticulocyte production index is an important step in understanding whether or not the reticulocyte count is ... Reticulocytes are a valuable tool for biologists who study protein translation. Reticulocytes are unusual among cells in that ... Reticulocytes are immature red blood cells (RBCs). In the process of erythropoiesis (red blood cell formation), reticulocytes ... Like mature red blood cells, in mammals, reticulocytes do not have a cell nucleus. They are called reticulocytes because of a ...
Reticulocyte production index
The reticulocyte production index (RPI), also called a corrected reticulocyte count (CRC), is a calculated value used in the ... This has the effect of raising the reticulocyte count simply because reticulocytes produced on any single day will spend more ... In anemia, the patient's red blood cells are depleted, creating an erroneously elevated reticulocyte count. Reticulocytes are ... is the medical term for an abnormal decrease of reticulocytes in the body The reticulocyte production index may find new use as ...
Reticulocyte binding protein homologs
This family is named after the reticulocyte binding proteins in P. vivax, a parasite that only infects reticulocytes (immature ... Reticulocyte binding protein homologs (RHs) are a superfamily of proteins found in Plasmodium responsible for cell invasion. ... March 2011). "Reticulocyte and erythrocyte binding-like proteins function cooperatively in invasion of human erythrocytes by ... "Structural characterization of the erythrocyte binding domain of the reticulocyte binding protein homologue family of ...
Polychromasia
The absolute number of reticulocytes is referred to as the reticulocyte index and is calculated by adjusting the reticulocyte ... If a low count of reticulocytes is found, it usually indicates bone marrow stress. If a high reticulocyte count is found, it is ... Most red blood cells are released into the blood as reticulocytes. Polychromasia occurs when the immature reticulocytes of the ... These young red blood cells are commonly called reticulocytes. All polychromatophilic cells are reticulocytes, however, not all ...
Pappenheimer bodies
Reticulocytes often contain Pappenheimer bodies. They are mostly observed in diseases such as Myelodysplastic syndrome (MDS), ...
TMEM248
A Geo Profile in NCBI shows expression of TMEM248 is much higher in fetal reticulocytes than in adult reticulocytes. ... Reticulocytes are immature red blood cells. GWAS studies found that TMEM248 SNP rs4718428 is associated with corneal topography ... "TMEM248 - Fetal and adult reticulocytes (HG-U133B)". National Center for Biotechnology Information. National Library of ...
Transfection
Purification and characterization of a double-stranded RNA-dependent protein synthesis inhibitor from reticulocyte lysates". J ... "Characterization of purified double-stranded RNA-activated eIF-2 alpha kinase from rabbit reticulocytes". J Biol Chem. 256 (14 ...
New methylene blue
"Reticulocyte Count" (PDF). Prentice-Hall. (Articles with short description, Short description is different from Wikidata, ...
Clement Finch
... human deferric transferrin's interaction with reticulocytes, the uptake and release of iron in human transferrin, rat ... "Competitive Advantage of Diferric Transferrin in Delivering Iron to Reticulocytes". Proceedings of the National Academy of ... "Interaction of Human Diferric Transferrin with Reticulocytes". Proceedings of the National Academy of Sciences. 78 (1): 621-625 ...
Reticulocytopenia
... is the medical term for an abnormal decrease of reticulocytes in the body. Reticulocytes are new, immature ...
C16orf82
Goh SH, Josleyn M, Lee YT, Danner RL, Gherman RB, Cam MC, Miller JL (July 2007). "The human reticulocyte transcriptome". ...
History of RNA biology
This problem was overcome in the 1960s by the use of reticulocytes in vertebrates, which produce large quantities of mRNA that ... Lamfrom H, McLaughlin CS, Sarabhai A (1966). "Direction of reading the genetic message in reticulocytes". J. Mol. Biol. 22 (2 ...
Micrococcal nuclease
Preparation of rabbit reticulocyte lysates. Studies of chromatin structure. Removal of nucleic acids from laboratory protein ...
Exosome (vesicle)
Exosomes were first discovered in the maturing mammalian reticulocyte (immature red blood cell) by Stahl and group in 1983 and ... Exosomes were shown to participate in selective removal of many plasma membrane proteins as the reticulocyte becomes a mature ... Harding C, Stahl P (June 1983). "Transferrin recycling in reticulocytes: pH and iron are important determinants of ligand ... Pan BT, Johnstone RM (July 1983). "Fate of the transferrin receptor during maturation of sheep reticulocytes in vitro: ...
Mitochondrion
Ney PA (May 2011). "Normal and disordered reticulocyte maturation". Current Opinion in Hematology. 18 (3): 152-157. doi:10.1097 ...
13-Hydroxyoctadecadienoic acid
Kühn, H; Brash, A. R (1990). "Occurrence of lipoxygenase products in membranes of rabbit reticulocytes. Evidence for a role of ... In the maturation of the red blood cell lineage (see erythropoiesis) from mitochondria-bearing reticulocytes to mature ... and 13-keto-octadecadienoic acid in biological membranes oxygenated by the reticulocyte lipoxygenase". Archives of Biochemistry ... "Substrate Specificity Changes for Human Reticulocyte and Epithelial 15-Lipoxygenases Reveal Allosteric Product Regulation". ...
Translation (biology)
... time-dependent processes and application to reticulocytes". Journal of Theoretical Biology. 86 (2): 279-313. Bibcode:1980JThBi ...
ALOX15
Bryant RW, Bailey JM, Schewe T, Rapoport SM (June 1982). "Positional specificity of a reticulocyte lipoxygenase. Conversion of ... Human ALOX15 protein is highly expressed in circulating blood eosinophils and reticulocytes, cells, bronchial airway epithelial ... identity to the reticulocyte enzyme and expression in epithelium". The American Journal of Physiology. 262 (4 Pt 1): L392-8. ... "Occurrence of the erythroid cell specific arachidonate 15-lipoxygenase in human reticulocytes". Biochemical and Biophysical ...
Left shift (medicine)
84-84 Leukocytosis Reticulocyte Kumar, Vinay; Abbas, Abul K.; Fausto, Nelson; Robbins, Stanley Leonard; Cotran, Ramzi S. (30 ... when increased reticulocytes and immature erythrocyte-precursor cells appear in the peripheral circulation. The standard ...
Tim Hunt
His PhD was supervised by Asher Korner and focused on haemoglobin synthesis in intact rabbit reticulocytes (immature red blood ... Pelham, Hugh R. B. (1978). Transcription and Translation in Reticulocyte Lysates. lib.cam.ac.uk (PhD thesis). University of ... While there, they discovered that tiny amounts of glutathione inhibited protein synthesis in reticulocytes and that tiny ... Ehrenfeld, E.; Hunt, T. (1971). "Double-stranded poliovirus RNA inhibits initiation of protein synthesis by reticulocyte ...
Cell-free system
Rabbit reticulocytes have been lysed in a solution of MgCl2 and had the extract filtered away from the membranes by ... E. coli, wheat germ, and rabbit reticulocytes have all proven useful to create cell-free systems by extraction of their ... Woodward, William R.; Ivey, Joel L.; Herbert, Edward (1974). "[67a] Protein synthesis with rabbit reticulocyte preparations". ...
EIF4A1
It was first characterized in 1982 by Grifo, et al., who purified it from rabbit reticulocyte lysate. The regulation of the ...
Brilliant cresyl blue
... is a supravital stain used for counting reticulocytes. It is classified as an oxazine dye. N95 dust masks ...
Transferrin receptor
"Transfer of iron from serum iron-binding protein to human reticulocytes". The Journal of Clinical Investigation. 38 (1, Part 1 ...
15-Hydroxyeicosatetraenoic acid
Schewe, T; Halangk, W; Hiebsch, C; Rapoport, S. M. (1975). "A lipoxygenase in rabbit reticulocytes which attacks phospholipids ... Identity to the reticulocyte enzyme and expression in epithelium". The American Journal of Physiology. 262 (4 Pt 1): L392-8. ...
Plasmodium eylesi
The parasite prefers to infect reticulocytes but will infect older erythrocytes. Multiple infections like those of Plasmodium ...
Erythropoiesis
By the reticulocyte stage, the cell has extruded its nucleus, but is still capable of producing hemoglobin. Essential for the ... As reticulocytes lose their polyribosomes, they become mature red blood cells. Sherwood, L, Klansman, H, Yancey, P: Animal ... At this stage the nucleus is expelled before the cell becomes a reticulocyte. (These cells still contain RNA and are also ... reticulocytes. After one to two days, these ultimately become "erythrocytes" or mature red blood cells. These stages correspond ...
Hugh Pelham
Pelham, Hugh R. B. (1978). Transcription and Translation in Reticulocyte Lysates (PhD thesis). University of Cambridge. OCLC ... Reticulocytes). His PhD was supervised by Richard J. Jackson and Tim Hunt, who went on to receive the Nobel Prize in Physiology ... "An Efficient mRNA-Dependent Translation System from Reticulocyte Lysates". European Journal of Biochemistry. 67 (1): 247-256. ...
Shine-Dalgarno sequence
The 3'-termini of rabbit reticulocyte ribosomal RNA". Biochemical Journal. 120 (2): 353-363. doi:10.1042/bj1200353. PMC 1179605 ...
Asher Korner
Munro, A. J.; Korner, A. (1963). "Lack of Messenger RNA in Reticulocyte Cell-sap". Nature. 198 (4883): 891-892. doi:10.1038/ ...
Reticulocytes: MedlinePlus Medical Encyclopedia Image
Reticulocytes normally make up 1% of the total RBC count, but may exceed levels of 4% when compensating for anemia. ... These slightly immature cells are called reticulocytes, and are characterized by a network of filaments and granules. ... These slightly immature cells are called reticulocytes, ...
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Cold Agglutinin Disease Workup: Approach Considerations, Complete Blood Cell Count and Peripheral Smear, Reticulocytes and...
Cold Agglutinin Disease Workup: Approach Considerations, Complete Blood Cell Count and Peripheral Smear, Reticulocytes and...
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Selective reticulocyte destruction in erythrocyte pyruvate kinase deficiency
Those reticulocytes with particularly low levels of PK exhibit very low glycolytic rates and thus are uniquely reliant upon ... Other reticulocytes, better endowed with PK activity, can meet the increased ATP requirements of young erythrocytes. Upon ... PK-deficient reticulocytes, dependent upon oxidative phosphorylation for ATP production, are exquisitely sensitive to cyanide- ... in a patient with erythrocyte PK deficiency have provided evidence for prompt reticulocyte sequestration and destruction by the ...
Reticulocyte Count
The reticulocyte count is given as the percentage of red blood cells that are reticulocytes (the number of reticulocytes ... Reticulocyte Count. Test Overview. A reticulocyte count is a blood test that measures how fast red blood cells called ... A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow ... A reticulocyte count is done to:. *See whether anemia is caused by fewer red blood cells being made or by a greater loss of red ...
Lab Test: Reticulocyte Count, Automated | Akron Children's Hospital
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Paper: Single-Cell RNA Sequencing of Sickle Cell Reticulocytes to Identify Beta-Globin Genotypes and Associated Gene Expression...
However, reticulocytes are immature RBCs that still contain some RNA and could be used to evaluate allelic correction. We ... Methods: Reticulocytes were sorted from peripheral blood from healthy donors (AA), donors with sickle cell trait (AS), and ... 3468 Single-Cell RNA Sequencing of Sickle Cell Reticulocytes to Identify Beta-Globin Genotypes and Associated Gene Expression ... method to enable enumeration of potential gene-editing outcomes in peripheral reticulocytes. ...
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Validation of the reticulocyte channel of Sysmex XN-9000 system for blood cell count in samples with suspected cold ... Validation of the reticulocyte channel of Sysmex XN-9000 system for blood cell count in samples with suspected cold ... Validation of the reticulocyte channel of Sysmex XN-9000 system for blood cell count in samples with suspected cold ... Correction: Validation of the reticulocyte channel of Sysmex XN-9000 system for blood cell count in samples with suspected cold ...
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... DSpace/Manakin Repository. ... Hematopoietic stem/progenitor cell sources to generate reticulocytes for Plasmodium vivax culture. Noulin, F.; Manesia, J. K.; ... As invasion by P. vivax was significantly better in reticulocytes generated in vitro, we also suggest that P. vivax may have a ... Reticulocytes. Red blood cells. Hematopoietic stem cells. Peripheral blood. Bone marrow. CD34+. Laboratory techniques and ...
Glyceraldehyde-3-phosphate dehydrogenase is one of the three major RNA-binding proteins of rabbit reticulocytes<...
Glyceraldehyde-3-phosphate dehydrogenase is one of the three major RNA-binding proteins of rabbit reticulocytes. FEBS Letters. ... N2 - One of the 3 major RNA-binding proteins of rabbit reticulocytes, a polypeptide of 36 kDa, is identified as glyceraldehyde- ... AB - One of the 3 major RNA-binding proteins of rabbit reticulocytes, a polypeptide of 36 kDa, is identified as glyceraldehyde- ... One of the 3 major RNA-binding proteins of rabbit reticulocytes, a polypeptide of 36 kDa, is identified as glyceraldehyde-3- ...
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Reticulocyte Enumeration: Past & Present. By Roger S. Riley, MD, PhD, Jonathan M. Ben-Ezra, MD, Ann Tidwell, MT (ASCP), SH- ... automated techniques of reticulocyte enumeration are more precise, accurate, objective, and cost-effective, since 30,000 or ... Reticulocyte Parameters and Hemoglobin F Production in Sickle Cell Disease Patients Undergoing Hydroxyurea Therapy. ... Immature reticulocyte fraction as a useful parameter for blood transfusion assessment in anaemia. ...
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α|inf|4|/inf|β|inf|1|/inf|-Integrin expression on sickle reticulocytes: Vascular cell adhesion molecule-1-dependent binding to...
In patients with sickle cell anemia, up to 25% of reticulocytes express the α4β1-integrin complex. Furthermore, erythrocytes ... Integrin expression on sickle reticulocytes: Vascular cell adhesion molecule-1-dependent binding to endothelium Academic ... binding of α4β1-expressing reticulocytes to cytokine-activated endothelial cells may initiate vascular complications in sickle ...
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If a doctor has determined a high reticulocyte count, it is likely due to blood loss. Questions must be asked why the count is ... The Reticulocyte Production Index. This index is used to determine how quickly reticulocytes are formed, which is essential ... Protein Translation And Reticulocytes. Reticulocytes can process protein just like a regular red blood cell in most cases. ... How To Find Reticulocytes. You are looking for signals that they can admit which will not be as strong as a typical lymphocyte ...
Counts8
- Also, being at high altitudes may cause reticulocyte counts to rise, to help you adjust to the lower oxygen levels at high altitudes. (alberta.ca)
- A reticulocyte test counts them to help evaluate anemia or bone marrow function. (testing.com)
- The absolute reticulocyte counts for the anemic patients were significantly higher than for those without anemia on Days 0, 7, 21, and 28. (who.int)
- Elevations in liver enzymes and decreases in platelet counts and reticulocytes were also observed with the conventional ADC at 20 and 60mg/kg treatments, whereas these effects were only seen with the highest dose of the SMARTag ADC. (catalent.com)
- However, the MCV also may be elevated in patients with high reticulocyte counts since these cells are larger than mature RBCs. (medscape.com)
- Due to microangiopathic hemolytic anemia, patients typically have very high LDH, indirect bilirubin, and reticulocyte counts. (cooperhealth.org)
- Conclusion: This study provides locally derived ranges for complete blood cell and reticulocyte counts for a healthy adult population in Yaoundé, Cameroon. (bvsalud.org)
- The cut-off points were reticulocyte counts above ten per cent and alkaline phosphatase levels above 13 K.A. units. (ac.ke)
RBCs3
- However, reticulocytes are immature RBCs that still contain some RNA and could be used to evaluate allelic correction. (confex.com)
- Reticulocytes are immature red blood cells (RBCs). (testing.com)
- They are sometimes called RBCs, but they are also called reticulocytes. (ihtbio.com)
Count19
- Reticulocytes normally make up 1% of the total RBC count, but may exceed levels of 4% when compensating for anemia. (medlineplus.gov)
- The results of the reticulocyte count are usually increased in patients with cold agglutinin disease, with polychromasia in the peripheral blood smear. (medscape.com)
- A reticulocyte count is a blood test that measures how fast red blood cells called reticulocytes are made by the bone marrow and released into the blood. (alberta.ca)
- The reticulocyte count rises when there is a lot of blood loss or in certain diseases in which red blood cells are destroyed prematurely, such as hemolytic anemia . (alberta.ca)
- For example, a higher reticulocyte count means that iron replacement treatment or other treatment to reverse the anemia is working. (alberta.ca)
- The reticulocyte count is given as the percentage of red blood cells that are reticulocytes (the number of reticulocytes divided by the total number of red blood cells, multiplied by 100). (alberta.ca)
- A high reticulocyte count may mean more red blood cells are being made by the bone marrow. (alberta.ca)
- The reticulocyte count rises after the treatment for pernicious anemia , iron deficiency anemia , or folic acid deficiency anemia starts working. (alberta.ca)
- A low reticulocyte count can also be caused by exposure to radiation, a long-term (chronic) infection, or by certain medicines that damage the bone marrow. (alberta.ca)
- If a doctor has determined a high reticulocyte count , it is likely due to blood loss. (ihtbio.com)
- By measuring the amount of bone marrow, you have, combined with the reticulocyte count, they can determine if this is either normal or if you have far too many. (ihtbio.com)
- What Does A High Reticulocyte Count Mean? (ihtbio.com)
- Simultaneously, there will also be a high reticulocyte count , which indicates the replacement work. (ihtbio.com)
- Serum samples were taken on admission (Day 0), then on Days 7, 21, and 28, to measure the reticulocyte count, absolute reticulocyte count, reticulocyte hemoglobin content, and erythropoietin level (Epo). (who.int)
- The sensitivity and specificity were 40% and 98% respectively for reticulocyte count and 80% and 90% respectively for reticulocyte index. (who.int)
- An increased reticulocyte count represents increased RBC production and is a criterion for hemolysis but is not specific for hemolysis. (medscape.com)
- The reticulocyte count may be normal or low in patients with bone marrow suppression despite ongoing severe hemolysis (aplastic crisis). (medscape.com)
- We therefore studied the role of clinical (Body Mass Index), haematological (reticulocyte count, haemoglobin level), and biochemical (serum bilirubin: direct and indirect, serum alkaline phosphatase, serum transaminase) indices in predicting sickle cell anaemia patients likely to develop gallstones. (ac.ke)
- Body mass index (BMI), reticulocyte count and alkaline phosphatase were found to have a significant positive association with increased likelihood of gallstone formation at p values of 0.004, 0.007 and 0.007, respectively. (ac.ke)
Peripheral blood5
- Reticulocytes were sorted from peripheral blood from healthy donors (AA), donors with sickle cell trait (AS), and donors with sickle cell disease (SS) by fluorescence-activated cell sorting (FACS) based on a Live/CD235a+/CD45-/CD71+/TO+ phenotype and mixed at given ratios before application to the 10x genomics workflow for scRNAseq. (confex.com)
- We here compared the production of reticulocytes using an established in vitro culture system from three different sources of hematopoietic stem/progenitor cells (HSPC), i.e. umbilical cord blood (UCB), bone marrow (BM) and adult peripheral blood (PB). (itg.be)
- The enumeration of peripheral blood reticulocytes is often performed to obtain information about the functional integrity of the bone marrow. (habx.in)
- Reticulocytosis (an increased number of peripheral blood reticulocytes) occurs in anemic patients with functional bone marrow while anemic patients with dysfunctional bone marrow produce decreased numbers of reticulocytes, and have decreased numbers of peripheral blood reticulocytes (i.e., reticulocytopenia) in the absence of extramedullary hematopiesis and other factors. (habx.in)
- We found that reticulocyte numbers and peripheral blood transcriptional signatures robustly correlated with disease severity. (openrepository.com)
Plasmodium3
- The predilection of Plasmodium vivax (P. vivax) for reticulocytes is a major obstacle for its establishment in a long-term culture system, as this requires a continuous supply of large quantities of reticulocytes, representing only 1-2% of circulating red blood cells. (itg.be)
- IMSEAR at SEARO: Defective erythropoietin production and reticulocyte response in acute Plasmodium falciparum malaria-associated anemia. (who.int)
- Leowattana W, Krudsood S, Tangpukdee N, Brittenham G, Looareesuwan S. Defective erythropoietin production and reticulocyte response in acute Plasmodium falciparum malaria-associated anemia. (who.int)
Erythropoietin1
- To elucidate the relationship between falciparum malaria-associated anemia and serum erythropoietin (Epo) levels and reticulocyte response during acute malaria infection, 87 adults aged 18-65 years presenting with acute, uncomplicated malaria were examined on enrollment and for 28 days of follow-up. (who.int)
Sickle cell a2
- In patients with sickle cell anemia, up to 25% of reticulocytes express the α4β1-integrin complex. (uab.edu)
- Thus, binding of α4β1-expressing reticulocytes to cytokine-activated endothelial cells may initiate vascular complications in sickle cell anemia and perhaps other hemolytic anemias during episodes of infection and inflammation. (uab.edu)
Cells9
- These slightly immature cells are called reticulocytes, and are characterized by a network of filaments and granules. (medlineplus.gov)
- Reticulocytes are in the blood for about 2 days before developing into mature red blood cells. (alberta.ca)
- In addition, when CD34+-enriched cells were first expanded, a further extensive increase in reticulocytes was seen for UCB, to a lesser degree BM but not PB. (itg.be)
- automated techniques of reticulocyte enumeration are more precise, accurate, objective, and cost-effective, since 30,000 or more cells can be accurately evaluated in a very short period of time. (habx.in)
- They can derive the fraction of blood cells to reticulocytes from this information. (ihtbio.com)
- Immature reticulocytes fraction-high (IRF-H) analysis measures cells that have recently entered the circulation from the bone marrow. (labcorp.com)
- We have used 31 P, 23 Na and 19 F nuclear magnetic resonance (NMR) spectroscopy to compare the intracellular free ion and phosphometabolite levels in guinea pig reticulocytes and mature red blood cells. (elsevier.com)
- Sizeable but opposite changes in intracellular sodium (5.5 μmol/ml cells in reticulocytes vs. 8.5 μmol/ml cells in erythrocytes) and intracellular free calcium (99 nM vs. 31 nM in reticulocytes and mature red cells, respectively) were also observed, suggesting that alterations in the kinetics of membrane ion transport systems, accompanying changes in phospholipid and cholesterol content, occur during the process of red cell maturation. (elsevier.com)
- However, in contrast to dog red blood cells, there was no evidence for the presence of a Na + /Ca 2+ exchanger in guinea pig reticulocytes or erythrocytes. (elsevier.com)
Bilirubin1
- Radioisotope studies of bilirubin turnover, ferrokinetics, and red cell survival (51Cr) in a patient with erythrocyte PK deficiency have provided evidence for prompt reticulocyte sequestration and destruction by the reticuloendothelial system. (jci.org)
Bone1
- The other thing to consider is bone marrow activity in conjunction with the reticulocytes. (ihtbio.com)
Hemolysis1
- In addition to hemolysis, increased reticulocytes may be a response to blood loss or the treatment of iron, vitamin B12, or folate deficiencies. (medscape.com)
Assay1
- Original collection time of sample used for 'Reticulocytes Number' assay (blood sample obtained from UK Biobank assessment centre visit). (ox.ac.uk)
Maturation4
- During the maturation process reticulocytes lose their intracellular organelles and undergo changes in membrane lipid composition and ion transport properties. (elsevier.com)
- While several reports indicate differences in the levels of magnesium, sodium and calcium in reticulocytes and erythrocytes, controversy remains concerning the actual magnitude and direction of ionic alterations during reticulocyte maturation. (elsevier.com)
- In contrast to a sharply decreased concentration of ATP in erythrocytes in comparison to reticulocytes, the intracellular free magnesium, measured using 31 P-NMR, was increased by about 65% upon maturation (150 μmol/l cell water in reticulocytes in comparison to 250 μmol/l cell water in erythrocytes). (elsevier.com)
- NIX is required for programmed mitochondrial clearance during reticulocyte maturation. (nature.com)
Enumeration2
- We sought to develop a single-cell RNA sequencing (scRNAseq) method to enable enumeration of potential gene-editing outcomes in peripheral reticulocytes. (confex.com)
- A variety of RNA-specific fluorescent dyes have been utilized for automated reticulocyte enumeration, and some hematology analyzers utilize optical light scatter analysis to perform reticulocyte analysis on specimens stained with new methylene blue or other dyes. (habx.in)
Rabbit4
- One of the 3 major RNA-binding proteins of rabbit reticulocytes, a polypeptide of 36 kDa, is identified as glyceraldehyde-3-phosphate dehydrogenase (GAPD). (researchwithrutgers.com)
- Ryazanov, AG 1985, ' Glyceraldehyde-3-phosphate dehydrogenase is one of the three major RNA-binding proteins of rabbit reticulocytes ', FEBS Letters , vol. 192, no. 1, pp. 131-134. (researchwithrutgers.com)
- We find that in crude preparations from rabbit reticulocyte lysates, hemin inhibits the conversion of proinhibitor to inhibitor catalyzed by endogenous cAMP-dependent protein kinase upon addition of cAMP, but not that caused by the addition of free protein kinase catalytic subunit. (ias.ac.in)
- Use of purified polysomes from rabbit reticulocytes in a specific test for initiation factors. (openrepository.com)
Vivax3
- Compared to CD34+-enriched populations of PB and BM, CD34+-enriched populations of UCB produced the highest amount of reticulocytes that could be invaded by P. vivax. (itg.be)
- As invasion by P. vivax was significantly better in reticulocytes generated in vitro, we also suggest that P. vivax may have a preference for invading immature reticulocytes, which should be confirmed in future studies. (itg.be)
- Using Brazilian and Thai clinical isolates, data show that TfR1-PvRBP2b invasion pathway is critical for the recognition of reticulocytes during P. vivax invasion. (semanticscholar.org)
ERYTHROCYTES1
- Other reticulocytes, better endowed with PK activity, can meet the increased ATP requirements of young erythrocytes. (jci.org)
Iron deficiency1
- Reticulocyte haemoglobin content (RHC) is an early biomarker of iron deficiency or restriction, which also demonstrates response to iron therapy. (nevinmanimala.com)
Adults1
- It can range up to 2.5% in adults, yet an infant's reticulocytes can be as high as 6% . (ihtbio.com)
Anemia1
- This index is used to determine how quickly reticulocytes are formed, which is essential information, especially since higher than typical values can represent having anemia. (ihtbio.com)
Malaria1
- These results indicate defective Epo production and reticulocyte response in adult patients suffering from acute P. falciparum malaria, which differs from pediatric patients. (who.int)
Protein3
- Reticulocytes can process protein just like a regular red blood cell in most cases. (ihtbio.com)
- The formation of translational inhibitor (active eIF-2 kinase) from proinhibitor (inactive eIF-2 kinase) in reticulocyte lysates, known to be controlled by hemin, can, as we recently reported, be induced by 3':5'-cyclic AMP(cAMP)-dependent protein kinase (ATP:protein phosphotransferase, EC 2.7.1.37) or its catalytic subunit. (ias.ac.in)
- The mechanism by which hemin prevents the formation of the inhibitor and maintains protein synthesis in reticulocyte lysates is thus explained. (ias.ac.in)
Methods1
- METHODS: Effectiveness and safety were retrospectively investigated in patients who underwent Roux-en-Y gastric bypass (RYGB) or sleeve gastrectomy (SG) over a 6-year period in a single institution. (bvsalud.org)
Absence1
- Because of its absence, reticulocytes are extremely difficult to process when it comes to why they are in such high or low numbers. (ihtbio.com)
Levels1
- Those reticulocytes with particularly low levels of PK exhibit very low glycolytic rates and thus are uniquely reliant upon oxidative phosphorylation. (jci.org)
High2
- This percentage is how they can determine whether you have high reticulocyte numbers. (ihtbio.com)
- Yet when your reticulocyte numbers are not low but extremely high, different issues may be occurring within your body. (ihtbio.com)
Normal1
- A custom bioinformatics analysis pipeline was developed to identify HBB variants within the scRNAseq data to identify individual reticulocytes expressing either normal HBB , sickle HBB , or both. (confex.com)
Mechanism1
- Ochoa, S. (1977) Mechanism of translational control by hemin in reticulocyte lysates Proceedings of the National Academy of Sciences of the United States of America, 74 (8). (ias.ac.in)
Patients5
- Cancer patients that are recovering from chemotherapy will usually have low reticulocyte numbers. (ihtbio.com)
- résumé En dépit de l'idée communément admise selon laquelle les patients atteints de drépanocytose souffrent d'une surcharge en fer, certains d'entre eux sont atteints d'une anémie ferriprive. (who.int)
- Nous avons examiné des patients yéménites âgés de 12 mois à 30 ans atteints de drépanocytose homozygote afin d'établir leur bilan en fer à l'aide de quatre critères (taux de fer sérique faible, taux de saturation de la transferrine faible, capacité totale de fixation du fer élevée et volume globulaire moyen faible par rapport à l'âge). (who.int)
- L'objectif de notre étude est de décrire les caractéristiques hématologiques des patients atteints de COVID-19 hospitalisés au niveau du CHU d'Oran en Algérie. (bvsalud.org)
- Patients et méthodes : Il s'agit d'une étude prospective menée entre le 1er Juillet et le 15 Octobre 2020 ayant inclus des patients hospitalisés et/ou suivis au niveau des unités COVID-19 du CHU Oran en Algérie. (bvsalud.org)