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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
#1
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/28608631/a-descriptive-single-centre-experience-of-the-management-and-outcome-of-maternal-alloantibodies-in-pregnancy
#2
V Chatziantoniou, N Heeney, T Maggs, C Rozette, C Fountain, T Watts, C Harrison, D Pasupathy, S Sankaran, P Kyle, S Robinson
BACKGROUND: Haemolytic disease of the fetus and newborn (HDFN) occurs when maternal IgG alloantibodies to fetal red blood cell antigens cross the placenta, causing haemolysis in the fetus and/or neonate. After delivery, the main concern is hyperbilirubinaemia, which can cause neurological damage. OBJECTIVES: To summarise our current management and outcome data to inform health-care professionals counselling women whose pregnancies are at risk of HDFN and to compare these data with relevant studies...
June 13, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28600054/prenatal-treatment-of-severe-fetal-hemolytic-disease-due-to-anti-m-alloimmunization-by-serial-intrauterine-transfusions
#3
Lin Li, Linhuan Huang, Guangping Luo, Yanmin Luo, Qun Fang
OBJECTIVE: Fetal hemolytic disease is a common cause of fetal hydrops and fetal morbidity and mortality. Despite its relatively low frequency, the anti-M IgG antibody is one of the causes of severe fetal anemia and intrauterine death; only a few cases have been reported. CASE REPORT: This is a case of a pregnant woman with a history of three intrauterine deaths. A diagnosis of severe fetal anemia attributed to anti-M alloimmunization was confirmed in her fifth pregnancy...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28596661/what-is-it-really-anti-g-or-anti-d-plus-anti-c-clinical-significance-in-antenatal-mothers
#4
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/28580721/persistent-hemolytic-disease-of-the-fetus-and-newborn-hdfn-associated-with-passive-acquisition-of-anti-d-in-maternal-breast-milk
#5
Marissa Li, John C Blaustein
BACKGROUND: Anti-D is a well-documented, significant cause of hemolytic disease of the fetus and newborn (HDFN), but its presence in breast milk is not routinely described. Theoretically, breast milk containing anti-D could have the potential to exacerbate HDFN if ingested by the affected infant. STUDY DESIGN AND METHODS: This is a case report of a 28-week premature male neonate with hydrops fetalis born to a 32-year-old woman (gravidity 3/parity 3) with anti-D and anti-G...
June 5, 2017: Transfusion
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
#6
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/28543515/thrombocytopenia-associated-with-localized-scleroderma-report-of-four-pediatric-cases-and-review-of-the-literature
#7
Ankur Kumar Jindal, Anju Gupta, Sunil Dogra, Amit Rawat, Deepti Suri, Jasmina Ahluwalia, Surjit Singh
We report on four children with localized scleroderma (morphea) and thrombocytopenia. All four had the en coup de sabre subtype of morphea and had varying degrees of thrombocytopenia (8 × 10(9) /L to 120 × 10(9) /L). None of them had major bleeding manifestations, and thrombocytopenia resolved with treatment of morphea. (One patient was also given an injection of anti-D immunoglobulin.) We propose that thrombocytopenia associated with localized scleroderma is usually benign and requires no specific therapy...
May 23, 2017: Pediatric Dermatology
https://www.readbyqxmd.com/read/28508562/can-serological-methods-help-distinguish-between-prophylactic-and-alloimmune-anti-d
#8
C Irving, M Crennan, T Vanniasinkam
OBJECTIVES: Enzyme indirect antiglobulin test (EIAT) and polyethylene glycol IAT (PIAT) were evaluated for their potential use as tests to distinguish between prophylactic and alloimmune anti-D in plasma by comparing with a tube variation of the standard low ionic strength solution-IAT (LISS-IAT). BACKGROUND: Laboratories performing the screening of RhD-negative pregnant women are required to provide clinicians with guidance as to the source of detected RhD antibodies...
May 15, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28508413/serological-weak-d-phenotypes-a-review-and-guidance-for-interpreting-the-rhd-blood-type-using-the-rhd-genotype
#9
REVIEW
S Gerald Sandler, Leonard N Chen, Willy A Flegel
Approximately 0·2-1% of routine RhD blood typings result in a "serological weak D phenotype." For more than 50 years, serological weak D phenotypes have been managed by policies to protect RhD-negative women of child-bearing potential from exposure to weak D antigens. Typically, blood donors with a serological weak D phenotype have been managed as RhD-positive, in contrast to transfusion recipients and pregnant women, who have been managed as RhD-negative. Most serological weak D phenotypes in Caucasians express molecularly defined weak D types 1, 2 or 3 and can be managed safely as RhD-positive, eliminating unnecessary injections of Rh immune globulin and conserving limited supplies of RhD-negative RBCs...
May 16, 2017: British Journal of Haematology
https://www.readbyqxmd.com/read/28488977/non-invasive-foetal-rhd-genotyping-to-guide-anti-d-prophylaxis-an-external-quality-assurance-workshop
#10
Frederik B Clausen, Angela N Barrett, Grethe R Krog, Kirstin Finning, Morten H Dziegiel
No abstract text is available yet for this article.
April 5, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28488958/strategies-to-identify-candidates-for-d-variant-genotyping
#11
Xunda Luo, Margaret A Keller, Ian James, Michelle Grant, Shiguang Liu, Kellie Simmons Massey, Andrew Czulewicz, Sandra Nance, Yanhua Li
BACKGROUND: RhD variants have altered D epitopes and/or decreased antigen copies per red cell. Individuals carrying these variants may test antigen negative, weakly positive, or positive by serology, and may or may not be at risk of alloimmunisation after exposure. There have been recommendations to perform RHD genotyping of patients, pregnant women and females of childbearing potential with serological weak D phenotype, to guide prophylactic use of Rh immune globulin (RhIG), and better conserve D-negative blood products...
April 5, 2017: Blood Transfusion, Trasfusione del Sangue
https://www.readbyqxmd.com/read/28470789/first-report-of-rhnull-individuals-in-the-indian-population-and-characterization-of-the-underlying-molecular-mechanisms
#12
Swati S Kulkarni, Kasiviswanathan Vasantha, Harita Gogri, Disha Parchure, Manisha Madkaikar, Claude Férec, Yann Fichou
BACKGROUND: Rhnull phenotype is an extremely rare condition characterized by no expression of Rh antigens at the surface of red blood cells. Although rare, genetic bases of this phenotype are well known and include mutations within either the RH (RHD and RHCE) genes or the RHAG gene. So far Rhnull has been reported in individuals of Caucasian, African, and Asian origin. Here, we report individuals from two families of Indian origin representing such a rare phenotype. STUDY DESIGN AND METHODS: Serologic analysis was carried out by testing with anti-D, -C, -c, -E, and -e in Rhnull individuals and their family members...
May 3, 2017: Transfusion
https://www.readbyqxmd.com/read/28454758/n-o-343-pr%C3%A3-diction-du-g%C3%A3-notype-rhd-f%C3%A5-tal-par-test-pr%C3%A3-natal-non-invasif-de-routine-au-canada-l%C3%A2-heure-est-venue
#13
Jo-Ann Johnson, Kim MacDonald, Gwen Clarke, Amanda Skoll
Actuellement, la meilleure façon de prendre en charge les femmes enceintes Rh négatives consiste à prédire la présence ou l'absence de l'antigène D chez le fœtus au moyen d'un test non invasif analysant l'ADN acellulaire (ADNa) dans le plasma maternel, et à administrer une prophylaxie à celles dont l'enfant est RHD positif. Cette approche, prise pour norme dans un nombre croissant de pays, assure aux femmes enceintes Rh négatives des soins optimaux. La présente directive est le fruit d'une réunion de consensus du groupe de travail national sur le facteur Rh du Canada, un groupe interdisciplinaire formé pour examiner la situation nationale actuelle du génotypage RHD fœtal effectué sur l'ADNa...
May 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28454757/no-343-routine-non-invasive-prenatal-prediction-of-fetal-rhd-genotype-in-canada-the-time-is-here
#14
Jo-Ann Johnson, Kim MacDonald, Gwen Clarke, Amanda Skoll
The optimal management of the D-negative pregnant woman is now based on the non-invasive antenatal prediction of fetal D-blood group by cell-free DNA (cfDNA) in maternal plasma, with targeted prophylaxis for women carrying RHD-positive fetuses. This provides the optimal care for D-negative pregnant women and has been adopted as the standard approach in a growing number of countries around the world. This paper is the result of a consensus meeting of the Canadian National Rh Working Group, an interdisciplinary group formed to review the current status of fetal RHD genotyping based on cfDNA in Canada...
May 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28449972/effect-of-prophylactic-or-therapeutic-administration-of-paracetamol-on-immune-response-to-dtwp-hepb-hib-combination-vaccine-in-indian-infants
#15
Arijit Sil, Mandyam D Ravi, Badri N Patnaik, Mandeep S Dhingra, Martin Dupuy, Dulari J Gandhi, Sangappa M Dhaded, Anand P Dubey, Ritabrata Kundu, Sanjay K Lalwani, Jugesh Chhatwal, Leni G Mathew, Madhu Gupta, Shiv D Sharma, Sandeep B Bavdekar, Soumya P Rout, Midde V Jayanth, Naveena A D'Cor, Somnath A Mangarule, Suresh Ravinuthala, Jagadeesh Reddy E
BACKGROUND: Vaccination is considered as the most cost effective method for preventing infectious diseases. Low grade fever is a known adverse effect of vaccination. In India, it is a common clinical practice to prescribe paracetamol either prophylactically or therapeutically to manage fever. Some studies have shown that paracetamol interferes with antibody responses following immunization. This manuscript reports the outcome of a post hoc analysis of data from a clinical trial of a pentavalent vaccine in Indian infants where paracetamol was not used or was used either as prophylaxis or for treatment of fever...
May 19, 2017: Vaccine
https://www.readbyqxmd.com/read/28396683/preparation-and-neutralization-efficacy-of-igy-antibodies-raised-against-deinagkistrodon-acutus-venom
#16
Jinhua Liu, Qiyi He, Wenwen Wang, Bin Zhou, Bo Li, Yingfeng Zhang, Cong Luo, Diancheng Chen, Jia Tang, Xiaodong Yu
BACKGROUND: The five-paced pit viper (Deinagkistrodon acutus), endemic to China and northern Vietnam, is responsible for most snakebites in the Chinese territory. Antivenom produced from horses is the main treatment for snakebites, but it may cause numerous clinical side effects and have other disadvantages involved in their production such as the welfare of animals. The present study was conducted aiming to develop an alternative antibody (IgY) from the egg yolk of leghorn chickens immunized with snake venom...
2017: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/28389344/emergency-transfusion-of-patients-with-unknown-blood-type-with-blood-group-o-rhesus-d-positive-red-blood-cell-concentrates-a-prospective-single-centre-observational-study
#17
Kathleen Selleng, Gregor Jenichen, Kathrin Denker, Sixten Selleng, Bernd Müllejans, Andreas Greinacher
BACKGROUND: Emergency patients with unknown blood type usually receive O Rhesus D negative (RhD-) red blood cell concentrates until their blood group is determined to prevent RhD+ related adverse transfusion reactions. As 85% of individuals are RhD+, this consumption of O RhD- red blood cell concentrates contributes to shortages of O RhD- red blood cell concentrates, sometimes forcing transfusion of known RhD- patients with RhD+ red blood cell concentrates. Here we report the outcome of this transfusion policy transfusing all emergency patients with unknown blood type with O RhD+ red blood cell concentrates...
April 4, 2017: Lancet Haematology
https://www.readbyqxmd.com/read/28374955/rhd-alleles-among-pregnant-women-with-serologic-discrepant-weak-d-phenotypes-from-a-multiethnic-population-and-risk-of-alloimmunization
#18
Carolina Bonet Bub, Maria Giselda Aravechia, Thiago Henrique Costa, José Mauro Kutner, Lilian Castilho
BACKGROUND: A considerable number of RHD alleles responsible for weak and partial D phenotypes have been identified. Serologic determination of these phenotypes is often doubtful and makes genetic analysis of RHD gene highly desirable in transfusion recipients and pregnant women. We analyzed the RHD gene in a cohort of pregnant women with doubtful D phenotypes. METHODS: RHD genotyping was performed on 104 cases with D typing discrepancies or with history of serologic weak D phenotype...
April 4, 2017: Journal of Clinical Laboratory Analysis
https://www.readbyqxmd.com/read/28369969/a-rare-potentially-life-threatening-presentation-of-passenger-lymphocyte-syndrome
#19
Thomas J Gniadek, Andrea M McGonigle, R Sue Shirey, Patricia A Brunker, Michael Streiff, Benjamin Philosophe, Evan M Bloch, Paul M Ness, Karen E King
BACKGROUND: Passenger lymphocyte syndrome occurs when donor lymphocytes are transplanted with a solid organ and produce alloantibodies that react with antigens on the recipient's red blood cells (RBCs). Typically, passenger lymphocyte syndrome presents as immunoglobulin G antibody-mediated, extravascular hemolytic anemia with reticulocytosis. Often, the donor was alloimmunized before transplantation. CASE REPORT: A 34-year-old Group O, D+ man with a negative antibody screen received a liver transplant from a Group O, D- donor...
May 2017: Transfusion
https://www.readbyqxmd.com/read/28316444/anti-g-with-concomitant-anti-c-and-anti-d-a-case-report-in-a-pregnant-woman
#20
Rabeya Yousuf, Ahmad Nasirudin Mustafa, Siew-Ling Ho, Yee-Loong Tang, Chooi-Fun Leong
The G antigen of Rh blood group system is present in almost all D-positive or C-positive red cells but absent from red cells lacking D and C antigens. The differentiation of anti-D and anti-C from anti-G is not necessary for routine transfusion; however, during pregnancy, it is important because anti-G can masquerade as anti-D and anti-C with initial antibody testing. The false presence of anti-D will exclude the patient from receiving anti-D immunoglobulin (RhIG) when the patient actually is a candidate for RhIG prophylaxis...
January 2017: Asian Journal of Transfusion Science
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