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Red blood cell blood group antigen

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https://www.readbyqxmd.com/read/29780325/proteomics-of-stored-red-blood-cell-membrane-and-storage-induced-microvesicles-reveals-the-association-of-flotillin-2-with-band-3-complexes
#1
Michel Prudent, Julien Delobel, Aurélie Hübner, Corinne Benay, Niels Lion, Jean-Daniel Tissot
The storage of erythrocyte concentrates (ECs) induces lesions that notably affect metabolism, protein activity, deformability of red blood cells (RBCs), as well as the release of oxygen. Band 3 is one of the proteins affected during the ex vivo aging of RBCs. This membrane protein is an anion transporter, an anchor site for the cytoskeleton and other membrane proteins as well as a binding site for glycolytic enzymes and bears blood group antigens. In the present study, band 3 complexes were isolated from RBCs stored for 7 and 42 days in average ( n = 3), as well as from microvesicles ( n = 3)...
2018: Frontiers in Physiology
https://www.readbyqxmd.com/read/29780001/automated-typing-of-red-blood-cell-and-platelet-antigens-a-whole-genome-sequencing-study
#2
William J Lane, Connie M Westhoff, Nicholas S Gleadall, Maria Aguad, Robin Smeland-Wagman, Sunitha Vege, Daimon P Simmons, Helen H Mah, Matthew S Lebo, Klaudia Walter, Nicole Soranzo, Emanuele Di Angelantonio, John Danesh, David J Roberts, Nick A Watkins, Willem H Ouwehand, Adam S Butterworth, Richard M Kaufman, Heidi L Rehm, Leslie E Silberstein, Robert C Green
BACKGROUND: There are more than 300 known red blood cell (RBC) antigens and 33 platelet antigens that differ between individuals. Sensitisation to antigens is a serious complication that can occur in prenatal medicine and after blood transfusion, particularly for patients who require multiple transfusions. Although pre-transfusion compatibility testing largely relies on serological methods, reagents are not available for many antigens. Methods based on single-nucleotide polymorphism (SNP) arrays have been used, but typing for ABO and Rh-the most important blood groups-cannot be done with SNP typing alone...
May 17, 2018: Lancet Haematology
https://www.readbyqxmd.com/read/29776631/molecular-pathology-in-transfusion-medicine-new-concepts-and-applications
#3
REVIEW
Matthew B Elkins, Robertson D Davenport, Martin H Bluth
Virtually all the red blood cell and platelet antigen systems have been characterized at the molecular level. Highly reliable methods for red blood cell and platelet antigen genotyping are now available. Genotyping is a useful adjunct to traditional serology and can help resolve complex serologic problems. Although red blood cell and platelet phenotypes can be inferred from genotype, knowledge of the molecular basis is essential for accurate assignment. Genotyping of blood donors is an effective method of identifying antigen-negative and/or particularly rare donors...
June 2018: Clinics in Laboratory Medicine
https://www.readbyqxmd.com/read/29770450/relationship-of-epitope-glycosylation-and-other-properties-of-blood-group-proteins-to-the-immunogenicity-of-blood-group-antigens
#4
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/29709005/single-nucleotide-polymorphisms-in-a4galt-spur-extra-products-of-the-human-gb3-cd77-synthase-and-underlie-the-p1pk-blood-group-system
#5
Radoslaw Kaczmarek, Katarzyna Szymczak-Kulus, Anna Bereźnicka, Krzysztof Mikołajczyk, Maria Duk, Edyta Majorczyk, Anna Krop-Watorek, Elżbieta Klausa, Joanna Skowrońska, Bogumiła Michalewska, Ewa Brojer, Marcin Czerwinski
Contrary to the mainstream blood group systems, P1PK continues to puzzle and generate controversies over its molecular background. The P1PK system comprises three glycosphingolipid antigens: Pk, P1 and NOR, all synthesised by a glycosyltransferase called Gb3/CD77 synthase. The Pk antigen is present in most individuals, whereas P1 frequency is lesser and varies regionally, thus underlying two common phenotypes: P1, if the P1 antigen is present, and P2, when P1 is absent. Null and NOR phenotypes are extremely rare...
2018: PloS One
https://www.readbyqxmd.com/read/29707783/high-immunogenicity-of-red-blood-cell-antigens-restricted-to-the-population-of-african-descent-in-a-cohort-of-sickle-cell-disease-patients
#6
Aline Floch, Dominique Gien, Christophe Tournamille, Btissam Chami, Anoosha Habibi, Frédéric Galactéros, Philippe Bierling, Rachid Djoudi, Corinne Pondarré, Thierry Peyrard, France Pirenne
BACKGROUND: Sickle cell disease (SCD) patients undergo multiple red blood cell (RBC) transfusions and are regularly exposed to low-prevalence (LP) antigens specific to individuals of African descent. This study evaluated the prevalence of antibodies against LP antigens in SCD patients and the need to identify these antibodies in everyday practice. STUDY DESIGN AND METHODS: Plasma from 211 SCD patients was tested with RBCs expressing the following LP antigens: RH10 (V), RH20 (VS), RH23 (DW ), RH30 (Goa ), KEL6 (Jsa ), and MNS6 (He)...
April 29, 2018: Transfusion
https://www.readbyqxmd.com/read/29700043/enhancement-of-red-blood-cell-transfusion-compatibility-using-crispr-mediated-erythroblast-gene-editing
#7
Joseph Hawksworth, Timothy J Satchwell, Marjolein Meinders, Deborah E Daniels, Fiona Regan, Nicole M Thornton, Marieangela C Wilson, Johannes Gg Dobbe, Geert J Streekstra, Kongtana Trakarnsanga, Kate J Heesom, David J Anstee, Jan Frayne, Ashley M Toye
Regular blood transfusion is the cornerstone of care for patients with red blood cell (RBC) disorders such as thalassaemia or sickle-cell disease. With repeated transfusion, alloimmunisation often occurs due to incompatibility at the level of minor blood group antigens. We use CRISPR-mediated genome editing of an immortalised human erythroblast cell line (BEL-A) to generate multiple enucleation competent cell lines deficient in individual blood groups. Edits are combined to generate a single cell line deficient in multiple antigens responsible for the most common transfusion incompatibilities: ABO (Bombay phenotype), Rh (Rhnull ), Kell ( K 0 ), Duffy (Duffynull ), GPB (S- s- U- )...
April 26, 2018: EMBO Molecular Medicine
https://www.readbyqxmd.com/read/29691150/molecular-genotyping-of-indian-blood-group-system-antigens-in-indian-blood-donors
#8
Harita Gogri, Pranali Pitale, Manisha Madkaikar, Swati Kulkarni
BACKGROUND: Haemagglutination has been the gold standard for defining the blood group status. However, these tests depend upon the availability of specific and reliable antisera. Potent antisera for extended phenotyping are very costly, weakly reacting or available in limited stocks and unavailable for some blood group systems like Indian, Dombrock, Coltan, Diego etc. The Indian blood group system consists of two antithetical antigens, Ina and Inb . The Ina /Inb polymorphism arises from 252C > G missense mutation in the CD44 gene...
April 11, 2018: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29687886/false-negative-compatible-antiglobulin-crossmatches-in-samples-with-alloantibodies-to-cognate-red-blood-cell-antigens
#9
Christian P Nixon, Stephanie L Krohto, Joseph D Sweeney
BACKGROUND: Patient samples showing a positive indirect antiglobulin test are further tested to identify alloantibody specificity using a panel of phenotypically characterized group O reagent red blood cells (RBCs). Donor RBCs phenotypically negative for the antibody specificity are then serologically crossmatched using an antiglobulin reagent. This latter test is performed to identify any incompatibility due to the presence of undetected minor blood group antibodies and considered an important step in patient safety...
April 24, 2018: Transfusion
https://www.readbyqxmd.com/read/29683797/uncertainty-evaluation-in-clinical-chemistry-immunoassay-hematology-and-coagulation-analytes-using-only-external-quality-assessment-data
#10
Yanyan Qin, Rui Zhou, Wei Wang, Hongyi Yin, Yanmin Yang, Yuhong Yue, Qing Tong, Lu Liu, Yali Jin, Yankun Shi, Shunli Zhang, Jianping Zhang, Rui Zhang, Chang Zuo, Tingting Jia, Ning Wang, Qingtao Wang
BACKGROUND: Measurement uncertainty (MU) is a parameter associated with the result of a measurement that characterizes its dispersion. We report results for estimating MU following the application of a top-down procedure using only proficiency test data to establish uncertainty levels for various analytes. METHODS: Data were obtained from 142 laboratories participating in the Beijing Center for Clinical Laboratory (BCCL) proficiency testing/external quality assessment (PT/EQA) schemes...
April 23, 2018: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/29678850/cryopreservation-of-genotyped-abo-subgroup-rbcs-for-quality-assurance-of-abo-grouping-reagents
#11
Sinyoung Kim, Sungwook Song, Hyun Ok Kim
BACKGROUND: Quality assurance of newly developed or manufactured blood grouping reagents with reagent red blood cells (RBCs) is crucial in the process of product approval by governmental agency. However, RBCs with rare blood group are not easily available in the fresh state. We investigated the feasibility of cryopreserved and genotyped ABO subgroup RBC reagents for quality assurance purpose. METHODS: We obtained RBCs from 10 volunteers with ABO subgroup phenotypes...
March 2018: Annals of Clinical and Laboratory Science
https://www.readbyqxmd.com/read/29664112/efficacy-of-d-red-blood-cell-transfusion-and-rituximab-therapy-in-autoimmune-hemolytic-anemia-with-anti-d-and-panreactive-autoantibodies-arising-after-hematopoietic-stem-cell-transplant
#12
Keiji Minakawa, Hitoshi Ohto, Hiroyasu Yasuda, Shunichi Saito, Kinuyo Kawabata, Kazuei Ogawa, Kenneth E Nollet, Kazuhiko Ikeda
BACKGROUND: Autoimmune hemolytic anemia (AIHA) is caused by autoantibodies to red blood cells (RBCs), which can be panreactive and/or specific to Rh/other blood group antigens. We report a severe case of AIHA after bone marrow transplantation (BMT) due to autoanti-D triggered by reactivation of Epstein-Barr virus (EBV) infection. A combined strategy of D- RBC transfusion and administration of anti-CD20 monoclonal antibody (MoAb) resolved the hemolysis. CASE REPORT: A 33-year-old male underwent allogeneic BMT from an ABO-identical and HLA-matched unrelated male donor...
April 17, 2018: Transfusion
https://www.readbyqxmd.com/read/29662110/identification-of-human-glycosyltransferase-genes-expressed-in-erythroid-cells-predicts-potential-carbohydrate-blood-group-loci
#13
Magnus Jöud, Mattias Möller, Martin L Olsson
Glycans are biologically important structures synthesised by glycosyltransferase (GT) enzymes. Disruptive genetic null variants in GT genes can lead to serious illness but benign phenotypes are also seen, including antigenic differences on the red blood cell (RBC) surface, giving rise to blood groups. To characterise known and potential carbohydrate blood group antigens without a known underlying gene, we searched public databases for human GT loci and investigated their variation in the 1000 Genomes Project (1000 G)...
April 16, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29616672/erythrocyte-phenotype-in-a-pregnant-woman-of-sri-lanka-description-of-the-case-and-complications-related-to-communication-problems
#14
Alvaro Ringressi, Veronica Cunsolo, Francesca Malentacchi, Simone Pozzessere
BACKGROUND: The Bombay phenotype is a rare genetic trait which is characterized by the absence of A, B and H antigens on red cells as well as in body secretions. The serum shows the presence of antibodies against antigen H. Patients with this rare blood type are not easily transfusable. We had observed a woman aged 18, at the 20th week of pregnancy, native of Sri Lanka, with an IgG and IgM class anti-H. We report the case and the clinical issues arisen. MATERIALS AND METHODS: The determination of ABO, Rh[D] group, the indirect antiglobulin test (IAT) were performed in tube techniques and in neutral gel microcolumn...
January 2018: Annali Dell'Istituto Superiore di Sanità
https://www.readbyqxmd.com/read/29608320/a-brief-overview-of-clinical-significance-of-blood-group-antibodies
#15
Manish J Gandhi, D M Strong, Barbee I Whitaker, Evangelia Petrisli
This review was derived from a presentation made on September 2, 2016 for the first Academy Day presented by the Working Party on Immunohematology at the International Society of Blood Transfusion (ISBT) Congress in Dubai. The focus of this review is to provide a brief overview of the clinical significance of blood group antibodies. Blood group antibodies can be naturally occurring (e.g., anti-A and anti-B through exposure to naturally occurring red blood cell [RBC] antigen-like substances) or can occur via exposure to foreign (donor) RBC antigens through previous transfusions, transplants, or exposure to fetal RBCs during or after pregnancy...
January 2018: Immunohematology
https://www.readbyqxmd.com/read/29604134/b4galnt2-and-xenotransplantation-a-newly-appreciated-xenogeneic-antigen
#16
REVIEW
Guerard Byrne, Saadullah Ahmad-Villiers, Zeji Du, Christopher McGregor
Analysis of non-Gal antibody induced after pig-to-baboon cardiac xenotransplantation identified the glycan produced by porcine beta-1,4-N-acetyl-galactosaminyltransferase 2 (B4GALNT2) as an immunogenic xenotransplantation antigen. The porcine B4GALNT2 enzyme is homologous to the human enzyme, which synthesizes the human SDa blood group antigen. Most humans produce low levels of anti-SDa IgM which polyagglutinates red blood cells from rare individuals with high levels of SDa expression. The SDa glycan is also present on GM2 gangliosides...
March 31, 2018: Xenotransplantation
https://www.readbyqxmd.com/read/29596498/analyses-of-genome-wide-association-data-cytokines-and-gene-expression-in-african-americans-with-benign-ethnic-neutropenia
#17
Bashira A Charles, Matthew M Hsieh, Adebowale A Adeyemo, Daniel Shriner, Edward Ramos, Kyung Chin, Kshitij Srivastava, Neil A Zakai, Mary Cushman, Leslie A McClure, Virginia Howard, Willy A Flegel, Charles N Rotimi, Griffin P Rodgers
BACKGROUND: Benign ethnic neutropenia (BEN) is a hematologic condition associated with people of African ancestry and specific Middle Eastern ethnic groups. Prior genetic association studies in large population showed that rs2814778 in Duffy Antigen Receptor for Chemokines (DARC) gene, specifically DARC null red cell phenotype, was associated with BEN. However, the mechanism of this red cell phenotype leading to low white cell count remained elusive. METHODS: We conducted an extreme phenotype design genome-wide association study (GWAS), analyzed ~16 million single nucleotide polymorphisms (SNP) in 1,178 African-Americans individuals from the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study and replicated from 819 African-American participants in the Atherosclerosis Risk in Communities (ARIC) study...
2018: PloS One
https://www.readbyqxmd.com/read/29593462/abo-rhesus-and-kell-antigens-alleles-and-haplotypes-in-west-bengal-india
#18
Debapriya Basu, Suvro Sankha Datta, Celina Montemayor, Prasun Bhattacharya, Krishnendu Mukherjee, Willy A Flegel
Background: Few studies have documented the blood group antigens in the population of eastern India. Frequencies of some common alleles and haplotypes were unknown. We describe phenotype, allele, and haplotype frequencies in the state of West Bengal, India. Methods: We tested 1,528 blood donors at the Medical College Hospital, Kolkata. The common antigens of the ABO, Rhesus, and Kell blood group systems were determined by standard serologic methods in tubes. Allele and haplotype frequencies were calculated with an iterative method that yielded maximum-likelihood estimates under the assumption of a Hardy-Weinberg equilibrium...
January 2018: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/29593033/human-group-c-rotavirus-vp8-s-recognize-type-a-histo-blood-group-antigens-as-ligands
#19
Xiaoman Sun, Lihong Wang, Jianxun Qi, Dandi Li, Mengxuan Wang, Xin Cong, Ruchao Peng, Wengang Chai, Qing Zhang, Hong Wang, Hongling Wen, George F Gao, Ming Tan, Zhaojun Duan
Group/species C rotaviruses (RVCs) have been identified as important pathogens of acute gastroenteritis (AGE) in children, family-based outbreaks, as well as animal infections. However, little is known regarding their host-specific interaction, infection, and pathogenesis. In this study, we performed serial studies to characterize the function and structural features of a human G4P[lsqb]2[rsqb] RVC VP8* that is responsible for host receptor interaction. Glycan microarrays demonstrated that the human RVC VP8* recognizes type A histo-blood antigens (HBGAs), which was confirmed by synthetic glycan-/saliva-based binding assays, and hemagglutination of red blood cells, establishing a paradigm of RVC VP8*-glycan interactions...
March 28, 2018: Journal of Virology
https://www.readbyqxmd.com/read/29573055/effect-of-cross-match-on-packed-cell-volume-after-transfusion-of-packed-red-blood-cells-in-transfusion-na%C3%A3-ve-anemic-cats
#20
Brittany Sylvane, Jennifer Prittie, Ann E Hohenhaus, Erik Tozier
BACKGROUND: Novel feline RBC antigens might contribute to decreased efficacy of RBC transfusion and increased incidence of acute transfusion reactions (ATR). OBJECTIVES: To examine the effect of major cross-match in transfusion-naïve anemic cats on the incidence of acute immunologic transfusion reaction and transfusion efficacy for up to 24 hours after transfusion. ANIMALS: Forty-eight client owned transfusion-naïve anemic cats. METHODS: Prospective, randomized, controlled study...
March 23, 2018: Journal of Veterinary Internal Medicine
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