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Red cell alloimmunization

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https://www.readbyqxmd.com/read/28719385/prevention-of-hemolytic-disease-of-the-fetus-and-newborn-what-have-we-learned-from-animal-models
#1
Yoelys Cruz-Leal, Danielle Marjoram, Alan H Lazarus
PURPOSE OF REVIEW: This review aims to highlight recent advances in our understanding of how anti-red blood cell (RBC) antibodies prevent erythrocyte immunization with an emphasis on new murine models. RECENT FINDINGS: New murine models with clinically relevant human erythrocyte antigens have been used to understand the alloimmunization process and its inhibition. The search to elucidate the mechanism of action of IgG-mediated inhibition of erythrocyte alloimmunization has provided new evidence in support of a potential role for epitope masking, immune deviation and/or antigen modulation in this process...
July 20, 2017: Current Opinion in Hematology
https://www.readbyqxmd.com/read/28717357/high-levels-of-cxcl8-and-low-levels-of-cxcl9-and-cxcl10-in-women-with-maternal-rhd-alloimmunization
#2
Juliana Araújo de Carvalho Schettini, Thomás Virgílio Gomes, Alexandra Karla Santos Barreto, Claudeir Dias da Silva Júnior, Marina da Matta, Isabela Cristina Neiva Coutinho, Maria do Carmo Valgueiro Costa de Oliveira, Leuridan Cavalcante Torres
Maternal RhD alloimmunization is an inflammatory response against protein antigens in fetal red blood cells (RBC). However, not all women become alloimmunized when exposed to RhD(+) fetal RBC. Thus, this study aimed to evaluate levels of inflammatory chemokines in RhD(-) pregnant women with erythrocyte alloimmunization. CXCL8, CXCL9, CCL5, and CXCL10 levels were determined from cell culture supernatants by flow cytometry in 46 (30 non-alloimmunized RhD(-) and 16 previously alloimmunized RhD(-)) pregnant women...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28664822/passenger-lymphocyte-syndrome-in-the-abo-incompatible-kidney-transplant-recipient-receiving-rituximab
#3
Shunji Nishide, Junji Uchida, Kazuya Kabei, Tomoaki Iwai, Nobuyuki Kuwabara, Toshihide Naganuma, Norihiko Kumada, Yoshiaki Takemoto, Tatsuya Nakatani
Passenger lymphocyte syndrome is a rare but important disease in which the donor lymphocytes produce antibodies to the red blood cell antigens of the recipient, causing alloimmune hemolysis. It occurs in ABO blood group-mismatched solid-organ and/or bone marrow transplant. We report a case of passenger lymphocyte syndrome occurring after ABO-incompatible kidney transplant. The recipient received rituximab as a desensitization protocol. On posttransplant day 18, the recipient showed a fall in her hemoglobin levels without identifiable bleeding source and an elevation of total bilirubin...
June 28, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28657764/two-cases-of-the-variant-rhd-dau5-allele-associated-with-maternal-alloanti-d
#4
Jennifer A Duncan, Susan Nahirniak, Rodrigo Onell, Gwen Clarke
Rh is a complex blood group system with diverse genotypes that may encode weak and partial D variants. Standard serologic analysis may identify clinically significant D variants as D+; nevertheless, individuals with these D variants should be managed as D- patients to prevent antibody formation to absent D epitopes. Variant identification is necessary during pregnancy to allow for timely and appropriate Rh immune globulin (RhIG) prophylaxis for hemolytic disease of the fetus and newborn (HDFN) as D alloimmunization can occur with some D variants...
June 2017: Immunohematology
https://www.readbyqxmd.com/read/28651884/-transfusions-in-myelodysplastic-syndromes
#5
C Rose
PRBC transfusion remains the mainstay of treatment of anemia in MDS after failure of erythropoiesis stimulating agents. The most common transfusion trigger in transfusion-dependent MDS patients is 80g/L. This level is based only on expert consensus; a randomized controlled trial comparing restrictive against liberal policy is required to evaluate potential impact of transfusion policy on with QoL and survival. Prophylactic antigen matching for RhCE and K must be used in order to reduce the risk of red blood cell (RBC) alloimmunization...
June 23, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28643386/risks-and-trends-of-red-blood-cell-transfusion-in-obstetric-patients-a-retrospective-study-of-45-213-deliveries-using-administrative-data
#6
Nadine Shehata, Michaël Chassé, Jo Ann Colas, Malia Murphy, Alan J Forster, Ann K Malinowski, Robin Ducharme, Dean A Fergusson, Alan Tinmouth, Kumanan Wilson
BACKGROUND: Transfusion data for obstetric patients are scarce. Identifying characteristics associated with red blood cell transfusion (RBCT) is of importance to better identify patients who would benefit from blood conservation strategies as the risk of alloimmunization from RBCT has the potential to affect the fetus and newborn. STUDY DESIGN AND METHODS: We conducted a retrospective cohort study using hospital administrative data to identify trends and risk factors of RBCT in obstetric patients...
June 22, 2017: Transfusion
https://www.readbyqxmd.com/read/28639314/determinants-of-red-blood-cell-alloantibody-detection-duration-analysis-of-multiply-alloimmunized-patients-supports-peritransfusion-factors
#7
Lorette Noiret, Amy Slater, John M Higgins
BACKGROUND: Alloimmunization to red blood cells (RBCs) can cause serious transfusion reactions and complicate the search for compatible blood products. Alloantibodies can be detected for periods ranging from a few days to several years, yet the mechanisms controlling the duration of detectability remain unknown. We studied the detection durations in patients forming multiple antibodies to investigate whether the duration is more strongly determined by conditions present at the time of each transfusion (peritransfusion factors) or by more stable patient-specific factors likely to persist across transfusions...
June 21, 2017: Transfusion
https://www.readbyqxmd.com/read/28639307/anti-d-in-a-mother-hemizygous-for-the-variant-rhd-dnb-gene-associated-with-hemolytic-disease-of-the-fetus-and-newborn
#8
Kelli M Quantock, Genghis H Lopez, Catherine A Hyland, Yew-Wah Liew, Robert L Flower, Frans J Niemann, Arthur Joyce
BACKGROUND: Individuals with the partial D phenotype when exposed to D+ red blood cells (RBCs) carrying the epitopes they lack may develop anti-D specific for the missing epitopes. DNB is the most common partial D in Caucasians and the clinical significance for anti-D in these individuals is unknown. STUDY DESIGN AND METHODS: This article describes the serologic genotyping results and clinical manifestations in two group D+ babies of a mother presenting as group O, D+ with alloanti-D...
June 21, 2017: Transfusion
https://www.readbyqxmd.com/read/28630094/type-i-ifn-is-necessary-and-sufficient-for-inflammation-induced-red-blood-cell-alloimmunization-in-mice
#9
David R Gibb, Jingchun Liu, Prabitha Natarajan, Manjula Santhanakrishnan, David J Madrid, Stephanie C Eisenbarth, James C Zimring, Akiko Iwasaki, Jeanne E Hendrickson
During RBC transfusion, production of alloantibodies against RBC non-ABO Ags can cause hemolytic transfusion reactions and limit availability of compatible blood products, resulting in anemia-associated morbidity and mortality. Multiple studies have established that certain inflammatory disorders and inflammatory stimuli promote alloimmune responses to RBC Ags. However, the molecular mechanisms underlying these findings are poorly understood. Type I IFNs (IFN-α/β) are induced in inflammatory conditions associated with increased alloimmunization...
June 19, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28596661/what-is-it-really-anti-g-or-anti-d-plus-anti-c-clinical-significance-in-antenatal-mothers
#10
Soumya Das, Shamee Shastry, M Murugesan, Poornima Baliga B, Shamee Shastry
G antigen of Rh blood group system is present either along with D and/or C positive red cells. Hence, [serologically anti-G presents with the similar picture as that of multiple antibodies (anti-D + anti-C). Differentiating them is important as anti-D + anti-C causes severe hemolytic disease of the fetus and newborn than anti-G. In pregnancies with anti-G alone, alloimmunization due to D antigen could be prevented by prophylactic administration of RhIg. Differentiating between anti-D + C from anti-G in alloimmunized pregnant mothers becomes essential...
June 2017: Indian Journal of Hematology & Blood Transfusion
https://www.readbyqxmd.com/read/28584527/efficacy-and-safety-of-manual-partial-red-cell-exchange-in-the-management-of-severe-complications-of-sickle-cell-disease-in-a-developing-country
#11
B F Faye, D Sow, M Seck, N Dieng, S A Toure, M Gadji, A B Senghor, Y B Gueye, D Sy, A Sall, T N Dieye, A O Toure, S Diop
INTRODUCTION: The realization of red cell exchange (RCE) in Africa faces the lack of blood, transfusion safety, and equipment. We evaluated its efficacy and safety in severe complications of sickle cell disease. PATIENTS AND METHOD: Manual partial RCE was performed among sickle cell patients who had severe complications. Efficacy was evaluated by clinical evolution, blood count, and electrophoresis of hemoglobin. Safety was evaluated on adverse effects, infections, and alloimmunization...
2017: Advances in Hematology
https://www.readbyqxmd.com/read/28580204/post-transfusion-purpura-a-case-report-of-an-underdiagnosed-phenomenon
#12
Hind Rafei, Raza Yunus, Samah Nassereddine
Post-transfusion purpura is a rare transfusion-related complication that often goes undiagnosed. It is due to alloimmunization against platelet antigens which leads to acute profound thrombocytopenia following the transfusion of any platelet-containing product (red blood cells or platelets). It is commonly seen in multiparous women. Here, we report a case of post-transfusion purpura in a 56-year-old multiparous woman who developed acute thrombocytopenia seven days following a packed red blood cell transfusion...
May 1, 2017: Curēus
https://www.readbyqxmd.com/read/28577661/erratum-to-alloimmunization-screening-after-transfusion-of-red-blood-cells-in-a-prospective-study-rev-bras-hematol-hemoter-2012-34-3-206-211
#13
Vitor Mendonça Alves, Paulo Roberto Juliano Martins, Sheila Soares, Gislene Araújo, Luciana Cayres Schmidt, Sidneia Sanches de Menezes Costa, Dante Mário Langhid, Helio Moraes-Souza
No abstract text is available yet for this article.
April 2017: Revista Brasileira de Hematologia e Hemoterapia
https://www.readbyqxmd.com/read/28576386/-identification-of-alloantibodies-and-their-associations-balance-sheet-of-3%C3%A2-years-at-the-regional-center-of-blood-transfusion-in-rabat-morocco-and-difficult-in-transfusion-management
#14
S Achargui, A Zidouh, S Abirou, F Z Merhfour, S Monsif, S Amahrouch, A El Ghobre, M El Halhali, H Temmara, A El Hryfy, M Motqi, A Satty, M Kandili, M Aghri, K Hajjout, M Benajiba
Red blood cell immunization can lead to delays or even an impasse in a transfusion. OBJECTIVES: Determine the specificities of the most common of alloantibodies and their associations to correct management of red blood cell transfused. METHODS AND MATERIALS: A retrospective study between 2013 and 2015 in immunohematology laboratories at the Blood Transfusion Center of Rabat in Morocco. The following data were studied: frequency, specificities of alloantibodies, blood group involved in alloimmunization and difficult of management of transfusion in case with association of alloantibodies...
May 30, 2017: Transfusion Clinique et Biologique: Journal de la Société Française de Transfusion Sanguine
https://www.readbyqxmd.com/read/28535394/red-blood-cell-alloimmunization-in-184-patients-with-myeloid-neoplasms-treated-with-azacitidine-a-retrospective-single-center-experience
#15
M Leisch, L Weiss, N Lindlbauer, C Jungbauer, A Egle, E Rohde, R Greil, C Grabmer, L Pleyer
Alloimmunization to Red Blood Cell (RBC) antigens frequently occurs in patients with myeloid neoplasms (AML, MDS and CMML) and potentially poses the patient at risk for delayed hemolytic transfusion reactions and limited supply of compatible RBC-units. However, there is comparatively little data on transfusion associated characteristics in this patient cohort. We therefore retrospectively analyzed transfusion requirements and clinical outcomes of 184 patients with myloid neoplasms treated with azacitidine at the Paracelsus Medical University Salzburg, which were included in the Austrian Registry of Hypomethylating Agents...
May 9, 2017: Leukemia Research
https://www.readbyqxmd.com/read/28511387/erythrocyte-alloimmunization-and-autoimmunization-among-blood-donors-and-recipients-visiting-a-tertiary-care-hospital
#16
Daljit Kaur, Lovenish Bains, Manoj Kandwal, Indu Parmar
INTRODUCTION: The ultimate aim of pretransfusion testing is the acceptable survival of donor red cells in recipient's body and antibody detection plays a critical role in achieving the same. The cornerstone of antibody detection method is detecting an unexpected antibody as against the expected antibodies of ABO blood group system. Autoantibodies can also interfere with the detection of clinically significant alloantibodies. AIM: To study the frequency of alloantibodies and autoantibodies in the healthy blood donors and patient population visiting our hospital...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28507611/the-impact-of-extended-typing-on-red-blood-cell-alloimmunization-in-transfused-patients
#17
Tatjana Makarovska-Bojadzieva, Emilija Velkova, Milenka Blagoevska
BACKGROUND: Red blood cell (RBC) alloimmunization is still an actual problem in our transfusion practice. In 2011, in addition to the regular ABO/D blood group typing, phenotyping for Rh (C, c, E, e) and Kell antigens was introduced for blood donors and patients undergoing blood transfusion. Our aim was to evaluate the impact of the extended RBC typing and donor/recipient matching on the incidence of RBC alloimmunization. METHODS: A retrospective comparative study was conducted by reviewing RBC request records for about 36,000 patients transfused with RBC in the period from 2013 to 2015 in comparison to the similar study conducted on 47,000 transfused patients in the period from 2005 to 2008...
April 15, 2017: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28425750/modeling-alloantibody-formation-to-high-incidence-red-blood-cell-antigens-in-immune-responders-using-genotypic-data
#18
Patricia A R Brunker, Keerthana Ravindran, R S Shirey
Alloimmunization to red blood cell antigens is unpredictable and poorly understood. Patients who are negative for high-incidence antigens (HIAs) are at risk for developing the corresponding antibodies. Molecular methods can easily predict the lack of an antigen and thus, the risk of an individual to become immunized. We examined the prevalence and risk factors for HIA alloimmunization in patients at risk based on genotyping results. Genotyping using a molecular method (HEA BeadChip™, Immucor, Warren, NJ) was performed on all patient specimens referred for molecular testing over 45 months; serologic and clinical data were analyzed...
January 2017: Immunohematology
https://www.readbyqxmd.com/read/28413208/anti-m-induced-severe-haemolytic-disease-of-foetus-and-newborn-in-a-malay-woman-with-recurrent-pregnancy-loss
#19
H Mohd Nazri, M N Noor Haslina, M Y Shafini, A R Noor Shaidatul Akmal, M Rapiaah, A Wan Zaidah
Haemolytic disease of the foetus and newborn (HDFN) is caused by maternal red blood cells (RBC) alloimmunisation resulted from incompatibility of maternal and foetal RBCs. However, only a few HDFN attributed to anti-M were reported, varying from asymptomatic to severe anaemia with hydrops foetalis and even intrauterine death. A case of severe HDFN due to anti-M alloantibody from an alloimmunized grandmultiparous Malay woman with recurrent pregnancy loss is reported here. The newborn was delivered with severe and prolonged anaemia which required frequent RBC transfusions, intensive phototherapy and intravenous immunoglobulin administration...
April 2017: Malaysian Journal of Pathology
https://www.readbyqxmd.com/read/28411255/absence-of-the-spleen-and-the-occurrence-of-primary-red-cell-alloimmunization-in-humans
#20
Dorothea Evers, Johanna G van der Bom, Janneke Tijmensen, Masja de Haas, Rutger A Middelburg, Karen M K de Vooght, Daan van de Kerkhof, Otto Visser, Nathalie C V Péquériaux, Francisca Hudig, Jaap Jan Zwaginga
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April 14, 2017: Haematologica
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