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Red cell alloantibody

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https://www.readbyqxmd.com/read/29445378/fc-glycosylation-in-human-igg1-and-igg3-is-similar-for-both-total-and-anti-red-blood-cell-anti-k-antibodies
#1
Myrthe E Sonneveld, Carolien A M Koeleman, H Rosina Plomp, Manfred Wuhrer, C Ellen van der Schoot, Gestur Vidarsson
After albumin, immunoglobulin G (IgG) are the most abundant proteins in human serum, with IgG1 and IgG3 being the most abundant subclasses directed against protein antigens. The quality of the IgG-Fc-glycosylation has important functional consequences, which have been found to be skewed toward low fucosylation in some antigen-specific immune responses. This increases the affinity to IgG1-Fc-receptor (FcγR)IIIa/b and thereby directly affects downstream effector functions and disease severity. To date, antigen-specific IgG-glycosylation have not been analyzed for IgG3...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29441590/the-prevalence-immunogenicity-and-evanescence-of-alloantibodies-to-mut-and-mur-antigens-of-gp-mur-red-blood-cells-in-a-southeast-asian-patient-cohort
#2
Veera Sekaran Nadarajan
BACKGROUND: Antibodies to Mi a , MUT, and Mur are among the most frequently identified alloantibodies in Southeast Asia. Understanding the characteristics of these antibodies in terms of induction and evanescence would aid in optimizing methods for their detection. STUDY DESIGN AND METHODS: Antibody testing results between the years 2013 and 2015 with relevant patient demographic data and red blood cell (RBC) transfusion history were retrieved. Cumulative alloimmunization incidence and evanescence to MUT and Mur were estimated by Kaplan-Meier analysis in relation to the number of RBC units transfused and time...
February 13, 2018: Transfusion
https://www.readbyqxmd.com/read/29415351/considerations-for-pre-transfusion-immunohaematology-testing-in-patients-receiving-the-anti-cd38-monoclonal-antibody-daratumumab-for-the-treatment-of-multiple-myeloma
#3
Hang Quach, Simon Benson, Helen Haysom, Anne-Marie Wilkes, Nicole Zacher, Merrole Cole-Sinclair, Henry Miles Prince, Peter Mollee, Andrew Spencer, Phoebe Joy Ho, Simon J Harrison, Cindy Lee, Bradley Augustson, James Daly
In recent years, the anti-CD38 monoclonal antibody daratumumab (Darzalex; Janssen-Cilag Pty Ltd) has been shown to be highly efficacious in relapsed and refractory multiple myeloma, with the final results of treatment in newly diagnosed patients awaited. Despite awareness of the potential interference of daratumumab in pre-transfusion immunohaematology testing during phase I and II clinical studies, there was a degree of unpreparedness in the community upon the introduction of this drug into the clinics, particularly the impact that it has on the operational processes in hospital transfusion laboratories and timely issue of red blood cells (RBCs)...
February 2018: Internal Medicine Journal
https://www.readbyqxmd.com/read/29378145/assessment-of-common-red-blood-cell-pretreatments-to-yield-an-accurate-serologic-antigen-phenotype-compared-with-genotypepredicted-phenotype
#4
Trina Horn, Janis Hamilton, Joanne Kosanke, Virginia W Hare, Wendy Kluver, Wendy Beres, Sandra Nance, Margaret A Keller
For patients requiring multiple transfusions and patients with positive direct antiglobulin tests (DATs), an extended red blood cell (RBC) phenotype can provide valuable information and help to determine the risk of forming alloantibodies. In some instances, the phenotype may be used for prophylactic matching. Phenotyping in this patient population is often hindered by the presence of circulating donor cells and/or by a positive DAT. Several methods, such as EDTA glycine acid (EGA) treatment to remove IgG, hypotonic saline wash to separate autologous RBCs, or reticulocyte separation, are often used in these situations to isolate patient RBCs for serologic phenotyping...
December 2017: Immunohematology
https://www.readbyqxmd.com/read/29377396/rbc-alloantibody-prevalence-and-specificity-in-a-western-norwegian-tertiary-hospital
#5
B S Erikstein, K G Hagen, T Hervig
BACKGROUND AND OBJECTIVE: Although several studies focus on red blood cell (RBC) alloantibody distribution in selected patient populations, few address the specificity and frequency in all relevant groups. This study reports alloantibody frequency, distribution and the relationship to age and gender in blood donors, pregnant women and potential recipients of blood products. METHODS: This historical cohort study included 55 462 consecutive antibody screening tests from a tertiary Western Norwegian Hospital...
January 29, 2018: Transfusion Medicine
https://www.readbyqxmd.com/read/29377071/how-i-manage-red-cell-transfusions-in-patients-with-sickle-cell-disease
#6
David C Rees, Susan Robinson, Jo Howard
Sickle cell disease is one of the commonest serious inherited diseases in the world, and red cell transfusion is still one of the few effective treatments for acute and chronic complications. Transfusion corrects anaemia and dilutes out the number of red cells able to cause vaso-occlusion and vascular damage. Urgent red cell transfusions are used to correct acute anaemia, treat acute chest syndrome and patients with acute neurological symptoms. We use elective transfusions preoperatively for moderate risk surgery, and in some pregnant women...
January 29, 2018: British Journal of Haematology
https://www.readbyqxmd.com/read/29365318/recipient-priming-to-one-rbc-alloantigen-directly-enhances-subsequent-alloimmunization-in-mice
#7
Seema R Patel, Ashley Bennett, Kathryn Girard-Pierce, Cheryl L Maier, Satheesh Chonat, Connie M Arthur, Patricia E Zerra, Amanda Mener, Sean R Stowell
Individuals that become immunized to red blood cell (RBC) alloantigens can experience an increased rate of antibody formation to additional RBC alloantigens following subsequent transfusion. Despite this, how an immune response to one RBC immunogen may impact subsequent alloimmunization to a completely different RBC alloantigen remains unknown. Our studies demonstrate that Kell blood group antigen (KEL) RBC transfusion in the presence of inflammation induced by poly (I:C) (PIC) not only enhances anti-KEL antibody production through a CD4+ T-cell-dependent process but also directly facilitates anti-HOD antibody formation following subsequent exposure to the disparate HOD (hen egg lysozyme, ovalbumin, fused to human blood group antigen Duffy b) antigen...
January 23, 2018: Blood Advances
https://www.readbyqxmd.com/read/29296731/human-and-murine-splenic-neutrophils-are-potent-phagocytes-of-igg-opsonized-red-blood-cells
#8
Sanne M Meinderts, Per-Arne Oldenborg, Boukje M Beuger, Thomas R L Klei, Johanna Johansson, Taco W Kuijpers, Takashi Matozaki, Elise J Huisman, Masja de Haas, Timo K van den Berg, Robin van Bruggen
Red blood cell (RBC) clearance is known to occur primarily in the spleen, and is presumed to be executed by red pulp macrophages. Erythrophagocytosis in the spleen takes place as part of the homeostatic turnover of RBCs to remove old RBCs. It can be strongly promoted by immunoglobulin G (IgG) opsonization of RBCs, a condition that can occur as a consequence of autoantibody or alloantibody formation. The purpose of our study was to investigate which phagocytes are involved in IgG-mediated RBC clearance in the human spleen...
June 13, 2017: Blood Advances
https://www.readbyqxmd.com/read/29273503/-is-the-research-of-posttransfusional-alloantibodies-still-relevant
#9
C Le Niger, C André, V Bourcier, L Augey, A Bazin, E Berger, V Betbeze, A Damais-Cepitelli, G Daurat, E De Meyer, S Ducroz, H Gouezec, C Huchet, B Lassale, S Leo-Kodeli, V Lovi, M Puntous, S Pujol, P Renom, C Rieux
The decision of November 6th, 2006 defining the principles of best practices recommends that posttransfusional red cell alloantibodies research is performed after one to three months after. In the University hospital of Brest, the haemovigilance unit takes charge of sending the medical prescription within the required time and centralizing the results. We wished to estimate if the realization of this research still remains relevant. METHODS: A prospective analysis was performed in 2015...
December 19, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29250791/successful-management-of-severe-red-blood-cell-alloimmunization-in-pregnancy-with-a-combination-of-therapeutic-plasma-exchange-intravenous-immune-globulin-and-intrauterine-transfusion
#10
Laura C Nwogu, Kenneth J Moise, Kimberly L Klein, Hlaing Tint, Brian Castillo, Yu Bai
BACKGROUND: Antibodies to Rhesus and Kell antigens have been associated with severe hemolytic disease of the fetus and newborn (HDFN) necessitating intrauterine transfusion (IUT) of red blood cells (RBCs). We report a case series of five women with severe HDFN secondary to maternal RBC alloimmunization who were successfully managed with therapeutic plasma exchange (TPE), intravenous immune globulin (IVIG), and IUT. STUDY DESIGN AND METHODS: This is a retrospective case series of five women with severe HDFN who underwent a total of three TPE procedures during Weeks 10 to 13 of pregnancy, followed by weekly IVIG infusions...
December 17, 2017: Transfusion
https://www.readbyqxmd.com/read/29210083/a-novel-association-between-high-red-blood-cell-alloimmunization-rates-and-hereditary-hemorrhagic-telangiectasia
#11
Yan Zheng, Jeffrey Pollak, Katharine Henderson, Jeanne E Hendrickson, Christopher A Tormey
BACKGROUND: Hereditary hemorrhagic telangiectasia (HHT) is an autosomal dominant disorder associated with multiple arteriovenous malformations. HHT patients may require red blood cell (RBC) transfusion due to spontaneous hemorrhage or surgical bleeding. Because HHT-associated hemorrhage often occurs in submucosa we hypothesized that RBC alloimmunization rates in HHT patients may be higher than those observed in other transfused patients and investigated this in a retrospective study. STUDY DESIGN AND METHODS: Eighty-five patients with HHT who were transfused at our tertiary care facility were identified...
December 6, 2017: Transfusion
https://www.readbyqxmd.com/read/29192961/the-incidence-and-outcome-of-clinically-significant-antibodies-detected-in-rhesus-d-positive-pregnant-women-of-the-northern-territory
#12
Lauren Andersson, Ferenc Szabo
BACKGROUND: Haemolytic disease of the fetus/newborn secondary to clinically significant non-Rhesus-D antibodies has risen in importance since the advent of immunoprophylactic anti-D administration to Rhesus-D negative women. Of interest is the incidence of these antibodies in Rhesus-D positive women, who receive less frequent antenatal alloantibody screening. This is of particular concern if the antibodies arise late in pregnancy and may go undetected. AIMS: To assess the proportion of Rhesus-D positive pregnant women with late developing clinically significant antibodies for haemolytic disease of the fetus/newborn, and whether these resulted in adverse fetal outcomes...
November 28, 2017: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/29174516/retracted-delayed-hemolytic-transfusion-reaction-and-hyperhemolysis-syndrome-without-detectable-alloantibodies-or-autoantibodies-in-a-patient-with-sickle-cell-disease-a-fatal-case-report-and-literature-review
#13
Basile Nsimba
L'éditeur a le regret de vous informer que cet article a déjà été publié dans: Journal of Blood Disorders & Transfusion, 2017, 8:4. DOI: 10.4172/2155-9864.1000388. Cette seconde publication faite par erreur a été retirée.
November 22, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/29168253/genomewide-association-study-of-hla-alloimmunization-in-previously-pregnant-blood-donors
#14
Mark Seielstad, Grier P Page, Nathan Gaddis, Marion Lanteri, Tzong-Hae Lee, Ram Kakaiya, Lisa F Barcellos, Lindsey A Criswell, Darrell Triulzi, Philip J Norris, Michael P Busch
BACKGROUND: Alloimmunization through blood transfusion, transplantation, or circulating fetal cells during pregnancy is a significant concern. Some exposed individuals make alloantibodies while others do not, implying variation in genetic risk factors. STUDY DESIGN AND METHODS: We conducted a genomewide association study (GWAS) of 9,427,497 single-nucleotide polymorphisms (SNPs) to identify genetic variants for HLA alloimmunization in previously pregnant blood donors with (n = 752) and without (n = 753) HLA Class I or II alloantibodies...
November 22, 2017: Transfusion
https://www.readbyqxmd.com/read/29100558/immunohaematological-complications-in-patients-with-sickle-cell-disease-after-haemopoietic-progenitor-cell-transplantation-a-prospective-single-centre-observational-study
#15
Elizabeth S Allen, Kshitij Srivastava, Matthew M Hsieh, Courtney D Fitzhugh, Harvey G Klein, John F Tisdale, Willy A Flegel
BACKGROUND: Haemopoietic progenitor cell (HPC) transplantation can cure sickle cell disease. Non-myeloablative conditioning typically results in donor-derived erythrocytes and stable mixed chimerism of recipient-derived and donor-derived leucocytes. Exposure to donor antigens from the HPC graft and new red cell antibodies induced by transfusion can lead to immunohaematological complications. We assessed the incidence of such complications among HPC transplant recipients with sickle cell disease...
November 2017: Lancet Haematology
https://www.readbyqxmd.com/read/29070981/red-cell-genotyping-by-multiplex-pcr-identifies-antigen-matched-blood-units-for-transfusion-dependent-thai-patients
#16
Kamphon Intharanut, Sasitorn Bejrachandra, Siriporn Nathalang, Nipapan Leetrakool, Oytip Nathalang
BACKGROUND: Antigen-negative red cell transfusion is required for transfusion-dependent patients. We developed multiplex PCR for red cell genotyping and calculated the possibility of finding compatible predicted phenotypes in Thai blood donor populations according to red cell alloantibodies found among Thai patients. METHODS: 600 DNA samples obtained from unrelated healthy central and northern Thai blood donors were tested with the newly developed multiplex PCR for FY*A, FY*B, JK*A, JK*B, RHCE*e, RHCE*E, DI*A and GYP*Hut, GYP*Mur, GYP*Hop, GYP*Bun, and GYP*HF allele detections...
September 2017: Transfusion Medicine and Hemotherapy
https://www.readbyqxmd.com/read/29054515/blood-transfusion-management-and-transfusion-related-outcomes-in-daratumumab-treated-patients-with-relapsed-or-refractory-multiple-myeloma
#17
Ajai Chari, Suzanne Arinsburg, Sundar Jagannath, Toshihisa Satta, Ivey Treadwell, Donna Catamero, Gillian Morgan, Huaibao Feng, Clarissa Uhlar, Imran Khan, Parul Doshi, Saad Usmani
INTRODUCTION: Daratumumab, a human CD38 monoclonal antibody approved for multiple myeloma (MM) treatment, binds red blood cells (RBCs), resulting in panagglutination in compatibility tests. Published mitigation methods avoid additional testing, ensuring timely release of blood products. Blood transfusion management and transfusion-related outcomes of daratumumab-treated patients in the SIRIUS study are reported, with emphasis on 2 clinical sites. PATIENTS AND METHODS: Patients had MM treated with ≥ 3 prior lines of therapy, including a proteasome inhibitor and an immunomodulatory drug, or were refractory to a proteasome inhibitor and an immunomodulatory drug...
September 19, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28983058/red-cell-alloimmunization-is-associated-with-development-of-autoantibodies-and-increased-red-cell-transfusion-requirements-in-myelodysplastic-syndrome
#18
Deepak Singhal, Monika M Kutyna, Rakchha Chhetri, Li Yan A Wee, Sophia Hague, Lakshmi Nath, Shriram V Nath, Romi Sinha, Nicholas Wickham, Ian D Lewis, David M Ross, Peter G Bardy, Luen Bik To, John Reynolds, Erica M Wood, David J Roxby, Devendra K Hiwase
Up to 90% of myelodysplastic syndrome patients require red blood cell transfusion, however comprehensive data addressing red cell alloimmunization are limited. This study evaluates the incidence and clinical impact of red cell alloimmunization in a large cohort of myelodysplastic syndrome patients registered in the statewide South Australian-MDS registry. Median age of the 817 patients was 73 years, and 66% were male. The cumulative incidence of alloimmunization was 11%. Disease-modifying therapy was associated with a lower risk of alloimmunization...
October 5, 2017: Haematologica
https://www.readbyqxmd.com/read/28970695/interference-of-daratumumab-with-pretransfusion-testing-mimicking-a-high-titer-low-avidity-like-antibody
#19
Mei-Hwa Lin, Fei-Yun Liu, Hsiu-Mien Wang, Hsin-Ching Cho, Shyh-Chyi Lo
Daratumumab is a monoclonal immunoglobulin against CD38 and has been approved for treating patients with refractory multiple myeloma. The presence of daratumumab in the sera can interfere with pretransfusion testing due to the weakly expression of CD38 on red cells. The reactivity could be mistaken as autoantibody (if autocontrol is positive) or alloantibody (if autocontrol is negative). We present a case that demonstrates daratumumab could mimic a high titer low avidity (HTLA) alloantibody. A 34-year-old male patient of refractory myeloma was recruited in phase three clinical trial involving daratumumab...
July 2017: Asian Journal of Transfusion Science
https://www.readbyqxmd.com/read/28970680/comparison-of-antibody-titers-using-conventional-tube-technique-versus-column-agglutination-technique-in-abo-blood-group-incompatible-renal-transplant
#20
Amit Bhangale, Amardeep Pathak, Smita Pawar, Tarun Jeloka
INTRODUCTION: Measurement of alloantibody titer to a red cell antigen (ABO titers) is an integral part of management of ABO incompatible kidney transplants (ABOiKT). MATERIAL AND METHODS: There are different methods of titer estimation. Alloantibody detection by tube titration and Gel agglutination columns are accepted methodologies. It is essential to find the difference in titers between the two methods so as to set the 'cut-off' titer accordingly, depending upon the method used...
July 2017: Asian Journal of Transfusion Science
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