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Liyan Y, Yongmei J, Jing F. A Rare Case of Hemolytic Disease of the Fetus and Newborn Caused by Anti-s Antibody in a Chinese Patient. Clin Lab 2023; 69. [PMID: 37057931 DOI: 10.7754/clin.lab.2022.220525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
BACKGROUND Anti-s is a rare alloantibody, and the reported cases of hemolytic disease of the fetus and newborn (HDFN) caused by anti-s are limited to non-Asian populations. METHODS Here, we report the case of a Chinese woman with a history of multiple pregnancies who developed an alloantibody with anti-s specificity. RESULTS Her newborn developed HDFN caused by anti-s but the clinical symptoms were not serious. After supportive treatment and bilirubin light phototherapy, the baby was discharged with a good prognosis. CONCLUSIONS This is the first reported case of anti-s-induced HDFN in a Chinese patient, highlighting the need for further research in the Asian population.
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Pegoraro V, Urbinati D, Visser GHA, Di Renzo GC, Zipursky A, Stotler BA, Spitalnik SL. Hemolytic disease of the fetus and newborn due to Rh(D) incompatibility: A preventable disease that still produces significant morbidity and mortality in children. PLoS One 2020; 15:e0235807. [PMID: 32687543 PMCID: PMC7371205 DOI: 10.1371/journal.pone.0235807] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Accepted: 06/24/2020] [Indexed: 11/29/2022] Open
Abstract
In the mid-20th century, Hemolytic Disease of the Fetus and Newborn, caused by maternal alloimmunization to the Rh(D) blood group antigen expressed by fetal red blood cells (i.e., "Rh disease"), was a major cause of fetal and neonatal morbidity and mortality. However, with the regulatory approval, in 1968, of IgG anti-Rh(D) immunoprophylaxis to prevent maternal sensitization, the prospect of eradicating Rh disease was at hand. Indeed, the combination of antenatal and post-partum immunoprophylaxis is ~99% effective at preventing maternal sensitization to Rh(D). To investigate global compliance with this therapeutic intervention, we used an epidemiological approach to estimate the current annual number of pregnancies worldwide involving an Rh(D)-negative mother and an Rh(D)-positive fetus. The annual number of doses of anti-Rh(D) IgG required for successful immunoprophylaxis for these cases was then calculated and compared with an estimate of the annual number of doses of anti-Rh(D) produced and provided worldwide. Our results suggest that ~50% of the women around the world who require this type of immunoprophylaxis do not receive it, presumably due to a lack of awareness, availability, and/or affordability, thereby putting hundreds of thousands of fetuses and neonates at risk for Rh disease each year. The global failure to provide this generally acknowledged standard-of-care to prevent Rh disease, even 50 years after its availability, contributes to an enormous, continuing burden of fetal and neonatal disease and provides a critically important challenge to the international health care system.
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Affiliation(s)
| | | | - Gerard H. A. Visser
- Departments of Obstetrics, University Medical Center, Utrecht, the Netherlands
| | - Gian Carlo Di Renzo
- Department of Obstetrics and Gynecology, University of Perugia, Perugia, Italy
- Department of Obstetrics and Gynecology, I.M. Sechenov First State University of Moscow, Moscow, Russia
| | | | - Brie A. Stotler
- Department of Pathology and Cell Biology, Columbia University, New York, NY, United States of America
| | - Steven L. Spitalnik
- Department of Pathology and Cell Biology, Columbia University, New York, NY, United States of America
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Escamilla-Rivera V, Liu J, Gibb DR, Santhanakrishnan M, Liu D, Forsmo JE, Eisenbarth SC, Foxman EF, Stowell SR, Luckey CJ, Zimring JC, Hudson KE, Hendrickson JE. Poly(I:C) causes failure of immunoprophylaxis to red blood cells expressing the KEL glycoprotein in mice. Blood 2020; 135:1983-1993. [PMID: 32266378 PMCID: PMC7256361 DOI: 10.1182/blood.2020005018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Accepted: 03/17/2020] [Indexed: 12/31/2022] Open
Abstract
Polyclonal anti-D (Rh immune globulin [RhIg]) therapy has mitigated hemolytic disease of the newborn over the past half century, although breakthrough anti-D alloimmunization still occurs in some treated females. We hypothesized that antiviral responses may impact the efficacy of immunoprophylaxis therapy in a type 1 interferon (IFN)-dependent manner and tested this hypothesis in a murine model of KEL alloimmunization. Polyclonal anti-KEL immunoprophylaxis (KELIg) was administered to wild-type or knockout mice in the presence or absence of polyinosinic-polycytidilic acid (poly[I:C]), followed by the transfusion of murine red blood cells (RBCs) expressing the human KEL glycoprotein. Anti-KEL alloimmunization, serum cytokines, and consumption of the transfused RBCs were evaluated longitudinally. In some experiments, recipients were treated with type 1 IFN (IFN-α/β). Recipient treatment with poly(I:C) led to breakthrough anti-KEL alloimmunization despite KELIg administration. Recipient CD4+ T cells were not required for immunoprophylaxis efficacy at baseline, and modulation of the KEL glycoprotein antigen occurred to the same extent in the presence or absence of recipient inflammation. Under conditions where breakthrough anti-KEL alloimmunization occurred, KEL RBC consumption by inflammatory monocytes and serum monocyte chemoattractant protein-1 and interleukin-6 were significantly increased. Poly(I:C) or type I IFN administration was sufficient to cause breakthrough alloimmunization, with poly(I:C) inducing alloimmunization even in the absence of recipient type I IFN receptors. A better understanding of how recipient antiviral responses lead to breakthrough alloimmunization despite immunoprophylaxis may have translational relevance to instances of RhIg failure that occur in humans.
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Affiliation(s)
| | - Jingchun Liu
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
| | - David R Gibb
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
| | | | - Dong Liu
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
| | - James E Forsmo
- Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA
| | - Stephanie C Eisenbarth
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Ellen F Foxman
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
- Department of Immunobiology, Yale University School of Medicine, New Haven, CT
| | - Sean R Stowell
- Department of Pathology and Laboratory Medicine, Emory University School of Medicine, Atlanta, GA
| | | | - James C Zimring
- Department of Pathology, University of Virginia, Charlottesville, VA
| | - Krystalyn E Hudson
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY; and
| | - Jeanne E Hendrickson
- Department of Laboratory Medicine, Yale University School of Medicine, New Haven, CT
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT
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Moosavi M, Ma Y, Baez J, Jeffreys R, Ward DC, Ziman A, McGonigle AM. Resolving Blocked Antigen Phenomenon in Hemolytic Disease of the Fetus and Newborn Due to Anti-K. Transfus Med Rev 2020; 34:124-127. [PMID: 32209273 DOI: 10.1016/j.tmrv.2020.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/11/2020] [Accepted: 02/13/2020] [Indexed: 11/19/2022]
Abstract
High-titer antibodies are a cause of false-negative reactions in red blood cell antigen phenotyping, an event referred to as blocked antigen phenomenon (BAP). In hemolytic disease of the fetus and newborn, BAP complicates laboratory workups as fetal phenotype is helpful in confirming the responsible antibody. Acid elution techniques, techniques using ethylenediaminetetraacetic glycine acid, as well as those using chloroquine diphosphate have been used to resolve BAP; however, ethylenediaminetetraacetic glycine acid destroys K-antigen expression and chloroquine diphosphate is not always effective. We report a case of severe hemolytic disease of the fetus and newborn from anti-K where a modified gentle heat elution resolved BAP. Although infrequently considered with isolated reports in the literature, heat elution is simple, is effective, and involves readily available materials in most blood banks.
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Affiliation(s)
- Mitchell Moosavi
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Yao Ma
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Janet Baez
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Rebecca Jeffreys
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Dawn C Ward
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Alyssa Ziman
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Andrea M McGonigle
- From the Wing-Kwai and Alice Lee-Tsing Chung Transfusion Service, Department of Pathology and Laboratory Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
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Venkataraman R, Yusuf K. Intravenous immunoglobulin in the management of a rare cause of hemolytic disease of the newborn: Anti-SARA antibodies. J Neonatal Perinatal Med 2017; 10:329-332. [PMID: 28854515 DOI: 10.3233/npm-16131] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Hemolytic disease of newborn (HDN) is a condition that develops in a fetus, when the IgG molecules produced by the mother pass through the placenta and attack the fetal red blood cells. HDN can occur due to Rh and ABO incompatibilities between the mother and the fetus as well as due to other allo-immune antibodies belonging to Kell (K and k), Duffy (Fya), Kidd (Jka and Jkb), and MNS (M, N, S, and s) systems. Role of intravenous immunoglobulin in management of HDN is not clear.SARA red blood cell antigen, first discovered in 1990 is a low frequency antigen. We report, a multiparous female whose pregnancy was complicated by HDN due to anti-SARA antibodies requiring both exchange transfusion and intravenous immunoglobulin. The response was sustained after intravenous immunoglobulin (IVIG) rather than after exchange transfusion.
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Affiliation(s)
| | - Kamran Yusuf
- Section of Neonatology, University of Calgary, Calgary, AB, Canada
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Smith BD, Haber J, Queenan JT. The problem of irregular antibodies in obstetrics. Bibl Haematol 2015; 29:352-7. [PMID: 5701940 DOI: 10.1159/000384635] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Finn R, Clarke CA. The prevention of Rhesus haemolytic disease. Bibl Haematol 2015; 29:225-30. [PMID: 4178380 DOI: 10.1159/000384609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Jain A, Kumawat V, Marwaha N. Blocked D phenomenon and relevance of maternal serologic testing. Immunohematology 2015; 31:116-118. [PMID: 26829177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A blood requisition for double-volume exchange transfusion was received for a 2-day-old male child born to a 29-year-old multiparous female (P2002) referred to our institute having neonatal jaundice with encephalopathy; no maternal sample was received. the neonatal blood sample was typed as group A, D-, and the direct antiglobulin test (DAT) was strongly positive (4+) using the gel method. Mono-specific DAT showed the presence of IgG antibodies on neonatal red blood cells (RBCs). Acid elution and gentle heat elution (at 56°C) confirmed the presence of anti-D on neonatal RBCs. The baby received two exchange transfusions with group O, D-, packed RBCs compatible with his own serum. Later, on day 3, the neonate's mother was typed as group AB, D-, and her serum revealed the presence of alloanti-D, -C, and -S reactive in the anti-human globulin phase. The anti-D titer was 1024. this report highlights the "blocking" phenomenon caused by maternal anti-D in a case of hemolytic disease of fetus and newborn with a positive DAT.
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Affiliation(s)
- Ashish Jain
- MD, Assistant Professor (corresponding author), Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Sector 12, Chandigarh 160012, India
| | | | - Neelam Marwaha
- MD, FAMS, Professor and Head, Department of Transfusion Medicine, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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Jernman R, Stefanovic V, Korhonen A, Haimila K, Sareneva I, Sulin K, Kuosmanen M, Sainio S. Case report: Severe hemolytic disease of the fetus and newborn due to anti-C+G. Immunohematology 2015; 31:123-127. [PMID: 26829179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Anti-G is commonly present with anti-D and/or anti-C and can confuse serological investigations. in general, anti-G is not considered a likely cause of severe hemolytic disease of the fetus and newborn (HDFN), but it is important to differentiate it from anti-D in women who should be administered anti-D immunoglobulin prophylaxis. We report one woman with three pregnancies severely affected by anti-C+G requiring intrauterine treatment and a review of the literature. In our case, the identification of the correct antibody was delayed because the differentiation of anti-C+G and anti-D+C was not considered important during pregnancy since the father was D-. In addition, anti-C+G and anti-G titer levels were not found to be reliable as is generally considered in Rh immunization. Severe HDFN occurred at a maternal anti-C+G antibody titer of S and anti-G titer of 1 in comparison with the critical titer level of 16 or more in our laboratory. close collaboration between the immunohematology laboratory and the obstetric unit is essential. In previously affected families, early assessment for fetal anemia is required even when titers are low.
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Affiliation(s)
- Riina Jernman
- MD, PhD (corresponding author), Specialist in Obstetrics and Gynecology, Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, P.O. Box 140, 00029 HUS, Helsinki, Finland
| | - Vedran Stefanovic
- MD, PhD, Specialist in Obstetrics and Gynecology, Department of Obstetrics and Gynecology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | | | | | | | | | | | - Susanna Sainio
- MD, PhD, Specialist in Obstetrics and Gynecology, Finnish Red Cross Blood Service, Helsinki, Finland
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Lambertino JR, Villegas SM. [Rh alloimmunization in pregnant women, a look to diagnosis and therapeutic approach]. Ginecol Obstet Mex 2014; 82:744-754. [PMID: 25826956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Prior to the onset of immunoglobulin antiD, many of the fetuses of mothers negative for the antigen "D" developing severe disease, history of prenatal diagnosis of alloimmunization is the perfect example of constructive effort by a diagnosis in order to identify cases in need of therapy to decrease morbidity and increase survival with the least number of invasive procedures and reducing the risks associated with them. Today it is difficult to determine the true prevalence of the disease in our environment, but the understanding of the pathophysiology has helped the evolution of diagnostic tests and better treatment approach to positively impact the evolution of the disease.
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Chitty LS, Finning K, Wade A, Soothill P, Martin B, Oxenford K, Daniels G, Massey E. Diagnostic accuracy of routine antenatal determination of fetal RHD status across gestation: population based cohort study. BMJ 2014; 349:g5243. [PMID: 25190055 PMCID: PMC4154470 DOI: 10.1136/bmj.g5243] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To assess the accuracy of fetal RHD genotyping using cell-free fetal DNA in maternal plasma at different gestational ages. DESIGN A prospective multicentre cohort study. SETTING Seven maternity units in England. PARTICIPANTS RhD negative pregnant women who booked for antenatal care before 24 weeks' gestation. INTERVENTIONS Women who gave consent for fetal RHD genotyping had blood taken at the time of booking for antenatal care and, when possible, at other routine visits such as for Down's syndrome screening between 11 and 21 weeks' gestation, at the anomaly scan at 18-21 weeks, and in the third trimester when blood was taken for the routine antibody check. The results of cord blood analysis, done routinely in RhD negative pregnancies, were also obtained to confirm the fetal RHD genotyping. MAIN OUTCOME MEASURES The accuracy of fetal RHD genotyping compared with RhD status predicted by cord blood serology. RESULTS Up to four analyses per woman were performed in 2288 women, generating 4913 assessable fetal results. Sensitivity for detection of fetal RHD positivity was 96.85% (94.95% to 98.05%), 99.83% (99.06% to 99.97%), 99.67% (98.17% to 99.94%), 99.82% (98.96% to 99.97%), and 100% (99.59% to 100%) at <11, 11-13, 14-17, 18-23, and >23 completed weeks' gestation, respectively. Before 11 weeks' gestation 16/865 (1.85%) babies tested were falsely predicted as RHD negative. CONCLUSIONS Mass throughput fetal RHD genotyping is sufficiently accurate for the prediction of RhD type if it is performed from 11 weeks' gestation. Testing before this time could result in a small but significant number of babies being incorrectly classified as RHD negative. These mothers would not receive anti-RhD immunoglobulin, and there would be a risk of haemolytic disease of the newborn in subsequent pregnancies.
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Affiliation(s)
- Lyn S Chitty
- UCL Institute of Child Health, Great Ormond Street Hospital for Children NHS Foundation Trust and University College London Hospitals NHS Foundation Trust, London WC1N 3BH, UK
| | - Kirstin Finning
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol BS34 7QH, UK Kirstin Finning
| | - Angela Wade
- Centre for Paediatric Epidemiology and Biostatistics, UCL Institute of Child Health, London WC1N 1EH, UK
| | - Peter Soothill
- Fetal Medicine Unit, St Michael's Hospital, Bristol BS2 8EG, UK
| | - Bill Martin
- Fetal Medicine Unit, Birmingham Women's NHS Foundation Trust, Birmingham B15 2TG, UK
| | - Kerry Oxenford
- Fetal Medicine Unit, University College London Hospitals NHS Foundation Trust, London NW1 2BU, UK
| | - Geoff Daniels
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol BS34 7QH, UK Kirstin Finning
| | - Edwin Massey
- International Blood Group Reference Laboratory, NHS Blood and Transplant, Bristol BS34 7QH, UK Kirstin Finning
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Zhu WY, Li HX, Liang Y. Significance of prenatal joint detection of ABO antibody titers and irregular antibodies in pregnant women with type O blood. CLIN EXP OBSTET GYN 2014; 41:28-31. [PMID: 24707678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
OBJECTIVE To investigate the effects of blood transfusion and number of pregnancies on ABO antibody titers and irregular antibodies in pregnant women with type O blood. MATERIALS AND METHODS The study included 4,200 pregnant women with type O blood (their husbands were with non-O type blood) that were divided into transfusion group and non-transfusion group, according to whether they had a history of blood transfusion. The both groups were respectively divided into three subgroups (the number of pregnancies was one, two, and > or = three). The ABO antibody titers and irregular antibodies were detected at the same time. The effects ofABO antibody titers and irregular antibodies on hemolytic disease of the newborn (HDN) were discussed. RESULTS There was no consistency of ABO antibody titers and existence of irregular antibody. The positive rates of irregular antibody of transfusion group and of the subgroup (number of pregnancies > or = three) were far higher than that of non-transfusion group and of the subgroups (number of pregnancies < three), respectively. All pregnant women with positive irregular antibody in non-transfusion group were with HDN. CONCLUSIONS For pregnant women with number of pregnancies > or = three or with history of blood transfusion, the prenatal joint detection of ABO antibody titers and irregular antibodies is helpful for accurately reflecting the in vivo antibody type and level.
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Yasuda H, Ohto H, Nollet KE, Kawabata K, Saito S, Yagi Y, Negishi Y, Ishida A. Hemolytic disease of the fetus and newborn with late-onset anemia due to anti-M: a case report and review of the Japanese literature. Transfus Med Rev 2013; 28:1-6. [PMID: 24262303 DOI: 10.1016/j.tmrv.2013.10.002] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 10/08/2013] [Accepted: 10/08/2013] [Indexed: 11/15/2022]
Abstract
Hemolytic disease of the fetus and newborn (HDFN) attributed to M/N-incompatibility varies from asymptomatic to lethally hydropic. Case reports are rare, and the clinical significance of anti-M is not completely understood. A challenging case of HDFN due to anti-M prompted an investigation of the Japanese literature, in order to characterize the clinical spectrum of M/N-incompatibility pregnancies in Japan and report results to English-language readers. Japanese reports of HDFN attributed to M/N incompatibility were compiled. Abstracted data include maternal antibody titers at delivery, fetal direct antiglobulin test, hemoglobin, total bilirubin, reticulocyte count at birth, and therapeutic interventions. We investigated characteristics of HDFN due to M/N-incompatible pregnancies in Japan after encountering a case of severe HDFN along with late-onset anemia in an infant born to a woman carrying IgG anti-M with a titer of 1. In total, thirty-three babies with HDFN due to anti-M and one due to anti-N have been reported in Japan since 1975. The median maternal antibody titer was 64 at delivery and was 16 or less in 10 of 34 women (29%). Five of 34 babies (15%) were stillborn or died as neonates. Twenty-one of 29 survivors (72%) had severe hemolytic anemia and/or hydrops fetalis. The reticulocyte count of neonates with anemia stayed below the reference interval. Sixteen (55%) developed late-onset anemia and 14 (48%) were transfused with M-negative RBCs. Significant positive correlation (P < .05) between the hemoglobin value and the reticulocyte count within 4 days of birth was obtained in 16 babies with anti-M HDFN. In the Japanese population, 21 of 34 cases of M/N-incompatible HDFN (72%) have manifested as severe hemolytic anemia and/or hydrops fetalis. Low reticulocyte count in neonates with late-onset anemia is consistent with suppressed erythropoiesis due to anti-M.
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Affiliation(s)
- Hiroyasu Yasuda
- Department of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan.
| | - Hitoshi Ohto
- Department of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan
| | - Kenneth E Nollet
- Department of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan; Radiation Medical Science Center, Fukushima Medical University, Fukushima, Japan
| | - Kinuyo Kawabata
- Department of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan
| | - Shunnichi Saito
- Department of Blood Transfusion and Transplantation Immunology, Fukushima Medical University, Fukushima, Japan
| | - Yoshihito Yagi
- Division of Central Laboratories, Gifu Prefectural Tajimi Hospital, Tajimi Japan
| | - Yutaka Negishi
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi Japan
| | - Atsushi Ishida
- Department of Pediatrics, Gifu Prefectural Tajimi Hospital, Tajimi Japan
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Castilho L, Reid ME. A review of the JR blood group system. Immunohematology 2013; 29:63-68. [PMID: 24094238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The JR blood group system (ISBT 032) consists of one antigen,Jra, which is of high prevalence in all populations. The rare Jr(a-) phenotype has been found mostly in Japanese and other Asian populations, but also in people of northern European ancestry, in Bedouin Arabs, and in one Mexican. Anti-Jra has caused transfusion reactions and is involved in hemolytic disease of the fetus and newborn. The Jra antigen is located on ABCG2 transporter, a multipass membrane glycoprotein (also known as the breast cancer resistance protein, BCRP), which is encoded by the ABCG2 gene on chromosome 4q22.1. The Jr(a-) phenotype mostly results from recessive inheritance of ABCG2 null alleles caused by frameshift or nonsense changes.
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Affiliation(s)
- Lilian Castilho
- PhD (corresponding author), Professor and Researcher, Hemocentro, Unicamp, Rua Carlos Chagas 480, Campinas, SP, Brazil, 13083-870
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Davies T. A matter of life or death? Midwives 2013; 16:52-53. [PMID: 24868802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
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16
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Keutgens A, Monfort M, Wagemans D, Van Cauwenberge JR, Gérard C. [Clinical case of the month. Mild hemolytic disease of the newborn due to an anti-Wr(a) antibody]. Rev Med Liege 2012; 67:403-406. [PMID: 22984759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A Caucasian woman, with a A+ CCD.ee K neg erythrocyte phenotype and no history of blood transfusion, delivered a first child who developed mild anemia. The direct antiglobulin test performed on the newborn red blood cells belonging to the A+ CCD.ee K neg group, was strongly positive for IgG. During the pregnancy and after the delivery, the woman had a negative irregular antibody screening test, using standard red blood cells. However, at birth, using a collection of thawed red blood cells with rare phenotypes (private antigens), the lab showed an antibody anti-Wr(a) in the maternal serum. The activity of the maternal antibody, with a titer of 16, was completely inhibited by dithiothreitol, indicating the nature IgM of the circulating antibody. The presence of the antigen Wr(a) on the surface of the newborn and its biological father red blood cells was confirmed. The concentration of IgG anti-Wr(a) on baby erythrocytes was demonstrated by the presence of the antibody anti-Wr(a) in the eluate. This case illustrates the difficulties to detect antibodies against private antigens on baby erythrocytes, responsible of hemolytic diseases of newborn. Indeed, standard red blood cell panels used for irregular antibodies screening test do not express generally those private antigens.
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Affiliation(s)
- A Keutgens
- Laboratoire d'lmmunologie-Hématologie, Secteur Hématologie, CHU de Liège
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Ji Y, Mo C, Wei L, Zhou X, Zhang R, Zhao Y, Luo H, Wang Z, Luo G. [High-throughput genotyping multiplex ligation-dependent probe amplification for assisting diagnosis in a case of anti-Di(a)-induced severe hemolytic disease of the newborn]. Nan Fang Yi Ke Da Xue Xue Bao 2012; 32:234-238. [PMID: 22381766] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
OBJECTIVE To report a rare case of hemolytic disease of the newborn (HDN) with kernicterus caused by anti-Di(a) diagnosed using high-throughput genotyping multiplex ligation-dependent probe amplification (MLPA). METHODS Conventional serological methods were used to detect the antibodies related with HDN. The genotypes of more than 40 red blood cell antigens for the newborn and her parents were obtained using the high-throughput MLPA assay. The antibody titers were tested using a standard serological method. RESULTS The unknown antibody against the low-frequency antigens was predicted based on the primary serological tests. The genotyping results for more than 40 red blood cell antigens of the newborn and her parents showed incompatible antigens of MNS and Diego blood group system, indicating the existence of anti-N or anti-Di(a). Further serological tests confirmed anti-Di(a) existence in the plasma of the newborn and her mother. The titer of anti-Di(a) in the mother's plasma was 1:32. CONCLUSION Severe HDN including kernicterus can result from anti-Di(a). High-throughput genotyping MLPA assay can help type some rare antigens in complicated cases. The reagent red cell panels including Di(a)-positive cells are necessary in routine antibody screening test in Chinese population.
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Affiliation(s)
- Yanli Ji
- Institute of Clinical Blood Transfusion, Guangzhou Blood Center, Guangzhou, China.
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18
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Tuson M, Hue-Roye K, Koval K, Imlay S, Desai R, Garg G, Kazem E, Stockman D, Hamilton J, Reid ME. Possible suppression of fetal erythropoiesis by the Kell blood group antibody anti-Kp(a). Immunohematology 2011; 27:58-60. [PMID: 22356520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Antibodies to antigens in the Kell blood group system are usually immunoglobulin G, and, notoriously, anti-K, anti-k, and anti-Kp(a) can cause severe hemolytic transfusion reactions, as well as severe hemolytic disease of the fetus and newborn (HDFN). It has been shown that the titer of anti-K does not correlate with the severity of HDFN because, in addition to immune destruction of red blood cells (RBCs), anti-K causes suppression of erythropoiesis in the fetus, which can result in severe anemia. We report a case involving anti-Kp(a) in which one twin was anemic and the other was not. Standard hemagglutination and polymerase chain reaction (PCR)-based tests were used. At delivery, anti-Kp(a) was identified in serum from the mother and twin A, and in the eluate prepared from the baby’s RBCs. PCR-based assays showed twin A (boy) was KEL*841T/C (KEL*03/KEL*04), which is predicted to encode Kp(a+b+). Twin B (girl) was KEL*841C/C (KEL*04/KEL*04), which is predicted to encode Kp(a–b+). We describe the first reported case of probable suppression of erythropoiesis attributable to anti-Kp(a). One twin born to a woman whose serum contained anti-Kp(a) experienced HDFN while the other did not. Based on DNA analysis, the predicted blood type of the affected twin was Kp(a+b+) and that of the unaffected twin was Kp(a–b+). The laboratory findings and clinical course of the affected twin were consistent with suppression of erythropoiesis in addition to immune RBC destruction.
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Affiliation(s)
- M Tuson
- Trinity Health, Farmington Hills, MI, USA
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20
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Stasi R. Rozrolimupab, symphobodies against rhesus D, for the potential prevention of hemolytic disease of the newborn and the treatment of idiopathic thrombocytopenic purpura. Curr Opin Mol Ther 2010; 12:734-740. [PMID: 21154165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Currently under codevelopment by Symphogen and Swedish Orphan Biovitrum, rozrolimupab is the first in a new class of recombinant polyclonal antibodies, known as symphobodies, produced using a proprietary technology from Symphogen. Rozrolimupab is being investigated for the prevention of hemolytic disease of the fetus and newborn (HDFN) and for the treatment of idiopathic thrombocytopenic purpura (ITP). Rozrolimupab comprises 25 genetically unique IgG1 antibodies, all of which are specific for the rhesus D (RhD) erythrocyte protein. In preclinical studies, rozrolimupab demonstrated binding to erythrocytes that was comparable with that of two plasma-derived anti-D Ig preparations. In a phase I clinical trial in healthy male volunteers, treatment with rozrolimupab was not associated with serious adverse events. In a phase II clinical trial of rozrolimupab in healthy, male, RhD-negative volunteers, rozrolimupab dose-dependently cleared RhD-positive erythrocytes from the circulation. Phase II clinical trials in ITP and HDFN are currently ongoing. Phase III clinical trials are necessary to establish the efficacy and safety profile of rozrolimupab compared with standard plasma-derived anti-D Ig preparations.
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MESH Headings
- Antibodies, Monoclonal/immunology
- Antibodies, Monoclonal/metabolism
- Antibodies, Monoclonal/therapeutic use
- Clinical Trials as Topic
- Erythroblastosis, Fetal/immunology
- Erythroblastosis, Fetal/prevention & control
- Erythrocytes/metabolism
- Humans
- Immunoglobulin G/immunology
- Immunoglobulin G/metabolism
- Immunoglobulin G/therapeutic use
- Infant, Newborn
- Isoantibodies/immunology
- Isoantibodies/metabolism
- Isoantibodies/therapeutic use
- Protein Binding
- Purpura, Thrombocytopenic, Idiopathic/immunology
- Purpura, Thrombocytopenic, Idiopathic/prevention & control
- Recombinant Proteins/immunology
- Recombinant Proteins/metabolism
- Recombinant Proteins/therapeutic use
- Rh-Hr Blood-Group System/immunology
- Rho(D) Immune Globulin
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Affiliation(s)
- Roberto Stasi
- St George's Hospital, Department of Hematology, Blackshaw Road, Tooting, London, SW17 0QT, UK.
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Okubo M, Tate A, Maeda H, Suzuki M. [Test for blood group incompatibility in pregnancy]. Nihon Rinsho 2010; 68 Suppl 6:803-806. [PMID: 20942195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Mitsuo Okubo
- Transfusion Medicine & Cell Therapy, Saitama Medical Center, Saitama Medical School
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22
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Nagao N. [Clinical significance of screening test for irregular antibodies]. Nihon Rinsho 2010; 68 Suppl 6:728-733. [PMID: 20942175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Affiliation(s)
- Nobuo Nagao
- Department of Medical Technology, Faculty of Health Sciences, Kobe Tokiwa University
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23
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Zhang CG, Wang H. [Immune hemolytic diseases caused by irregular antibodies and its research advance in clinic]. Zhongguo Shi Yan Xue Ye Xue Za Zhi 2010; 18:825-828. [PMID: 20561459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The irregular antibodies are other than antibodies from ABO blood group system because of pregnancies and blood transfusions, clinical autoimmune, drug-induced etc. The irregular IgG and/or IgM antibodies emerge and lead to the difficult identification of clinical blood type, difficult matching of blood, hemolytic disease of newborn, hemolytic transfusion reaction, and so on. It is very necessary to screen and identify the irregular antibodies before blood transfusion or antepartum. For some difficult identifying samples, some detections on serological level should be done firstly, combining with flow cytometry analysis, the difficult-matching patients' genotypes and fetal genotypes were detected by molecular biology techniques such as PCR and PCR-SSP in order to further predict fetal hemolytic disease of newborn and to provide the right blood to difficult-matching patients, and free fetal DNA extracted from maternal plasma. So that some measures must early be taken for clinical prevention and treatment to reduce immune hemolytic reactions. In this paper, the emergence of irregular antibodies, species, laboratory testing, pathogenesis, clinical symptoms and the current research are reviewed.
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Affiliation(s)
- Chen-Guang Zhang
- Department of Medical Laboratorial Examination, Henan Xinxiang Medical College, Xinxiang 453003, Henan Province, China
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24
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Sandler SG, Sathiyamoorthy S. Laboratory methods for Rh immunoprophylaxis: a review. Immunohematology 2010; 26:92-103. [PMID: 21214295] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
The recommended dose of Rh immune globulin for postpartum Rh immunoprophylaxis is based on an estimation of the volume of the fetomaternal hemorrhage, if any, measured as the percent of fetal RBCs in a sample of the D– mother's blood. Laboratory methods for distinguishing fetal from maternal RBCs have been based on their different blood types (D+ versus D–) or predominant hemoglobin content (hemoglobin F versus hemoglobin A). We conducted a review of the medical literature describing laboratory methods for detecting and quantifying fetal RBCs in maternal blood samples. We also used data collected for the College of American Pathologists Fetal RBC Detection Surveys to determine which laboratory methods are used currently in hospitals in the United States. The rosette screen is used widely for identifying D– mothers who may require additional doses of Rh immune globulin for postpartum immunoprophylaxis. As the rosette screen targets the D antigen, it is not suitable for detecting a fetomaternal hemorrhage in D+ mothers or when the D type of the fetus or newborn is D– or unknown. The acid-elution (Kleihauer- Betke) assay is a sensitive laboratory method for quantifying a fetomaternal hemorrhage, but it is tedious, often inaccurate, and difficult to reproduce. Flow cytometry, using anti-D or anti-hemoglobin F reagents, offers a more precise quantification of fetal RBCs in maternal blood. However, flow cytometry services for this function are available in relatively few hospital laboratories in the United States because of logistic and fiscal impediments.
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Affiliation(s)
- S G Sandler
- Georgetown University Hospital, Room M1306, Department of Laboratory Medicine, 3800 Reservoir Road, NW, Washington, DC 20007, USA
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25
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Meny GM. The Duffy blood group system: a review. Immunohematology 2010; 26:51-56. [PMID: 20932074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Duffy was the first blood group mapped to an autosome (chromosome 1) using cytogenetic studies. Duffy antigens are located on a glycoprotein that can be found on erythrocytes and other cells throughout the body. Fy(a) and Fy(b) are products of their respective alleles (FY*A, FY*B). Fy(x) characterized by weak Fy(b) expression, is a result of an additional mutation in FY*B. The Fy(a-b-) phenotype, most commonly found in Blacks, occurs primarily as a result of GATA promoter region mutation upstream of the FY allele. This mutation prevents expression of Duffy glycoprotein on erythrocytes only, while permitting expression of nonerythroid cells. Other antigens include Fy3, Fy5, and Fy6. Antibodies to Duffy antigens are usually clinically significant and have been reported to cause hemolytic disease of the fetus and newborn. This review provides a general overview of the Duffy blood group system, including the role of the Duffy glycoprotein as a chemokine receptor (Duffy antigen receptor for chemokines) and in malarial infection.
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Affiliation(s)
- G M Meny
- American Red Cross, Penn-Jersey Region, 700 Spring Garden Street, Philadelphia, PA 19123, USA
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26
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Walker PS, Reid ME. The Gerbich blood group system: a review. Immunohematology 2010; 26:60-65. [PMID: 20932076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Antigens in the Gebrich blood group system are expressed on glycophorin C (GPC) and glycophorin D (GPD), which are both encoded by a single gene, GYPC. The GYPC gene is located on the long arm of chromosome 2, and Gebrich antigens are inherited as autosomal dominant traits. There are 11 antigens in the Gebrich blood group system, six of high prevalence (Ge2, Ge3, Ge4, GEPL [Ge10*], GEAT [Ge11*], GETI [Ge12*]) and five of low prevalence (Wb [Ge5], Ls(a) [Ge6], An(a) [Ge7], Dh(a) [Ge8], GEIS [Ge9]). GPC and GPD interact with protein 4.1R, contributing stability to RBC membrane. Reduced levels of GPC and GPD are associated with hereditary elliptocytosis, and Gebrich antigens act as receptors for the malarial parasite Plasmodium falciparum. Anti-Ge2 and anti-Ge3 have caused hemolytic transfusion reactions, and anti-Ge3 has produced hemolytic disease of the fetus and newborn (HDFN).
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MESH Headings
- Blood Group Antigens/genetics
- Blood Group Antigens/immunology
- Blood Group Antigens/metabolism
- Chromosomes, Human, Pair 2/genetics
- Chromosomes, Human, Pair 2/immunology
- Chromosomes, Human, Pair 2/metabolism
- Erythroblastosis, Fetal/genetics
- Erythroblastosis, Fetal/immunology
- Erythroblastosis, Fetal/metabolism
- Erythrocyte Membrane/genetics
- Erythrocyte Membrane/metabolism
- Glycophorins/genetics
- Glycophorins/immunology
- Glycophorins/metabolism
- Humans
- Isoantigens/genetics
- Isoantigens/immunology
- Isoantigens/metabolism
- Malaria, Falciparum/genetics
- Malaria, Falciparum/immunology
- Malaria, Falciparum/metabolism
- Plasmodium falciparum/genetics
- Plasmodium falciparum/immunology
- Plasmodium falciparum/metabolism
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Drachmann O, Lundsgaard A. Prenatal assessment of blood group antibodies against "public" antigens. An example of anti-Ve (Vel) in pregnancy. Scand J Haematol 2009; 7:37-42. [PMID: 4194411 DOI: 10.1111/j.1600-0609.1970.tb01866.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Franco A, Rossi K, Krugh D, O'Shaughnessy R. Management of anti-Jka alloimmunization. J Reprod Med 2009; 54:121-125. [PMID: 19370894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To determine whether prenatal management using guidelines established for anti-D is applicable to anti-Jka. STUDY DESIGN A computerized database containing the records of all alloimmunized pregnancies at The Ohio State University Medical Center with due dates from 1959 to 2008 was used to identify pregnancies affected only by anti-Jka. Only cases with evidence that the newborn was Jka antigen positive were included. RESULTS Twenty affected pregnancies met inclusion criteria. Of those, 16 pregnancies required monitoring with serum titers only and 4 were followed with more diagnostic tests as recommended during that time period. One pregnancy with the highest titer of 32 and elevated middle cerebral artery peak systolic velocity (MCA PSV) required 4 intrauterine transfusions for fetal anemia. Another pregnancy with a titer of 32 had an infant who required phototherapy for hemolytic disease of the fetus/newborn (HDFN), with a hemoglobin value of 15.9 g/dL. None of the other 18 infants required any therapy for HDFN. CONCLUSION Our case series identified severe disease in 1 of 20 pregnancies from anti-Jka using maternal antibody titer and MCA PSV. Criteria used for monitoring RhD alloimmunization were effective in detecting severe HDFN resulting from to anti-Jka.
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Affiliation(s)
- Albert Franco
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, The Ohio State University, Columbus, Ohio, USA
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30
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Brinc D, Lazarus AH. Mechanisms of anti-D action in the prevention of hemolytic disease of the fetus and newborn. Hematology Am Soc Hematol Educ Program 2009; 2009:185-191. [PMID: 20008198 DOI: 10.1182/asheducation-2009.1.185] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Anti-D is routinely and effectively used to prevent hemolytic disease of the fetus and newborn (HDFN) caused by the antibody response to the D antigen on fetal RBCs. Anti-D is a polyclonal IgG product purified from the plasma of D-alloimmunized individuals. The mechanism of anti-D has not been fully elucidated. Antigenic epitopes are not fully masked by anti-D and are available for immune system recognition. However, a correlation has frequently been observed between anti-D-mediated RBC clearance and prevention of the antibody response, suggesting that anti-D may be able to destroy RBCs without triggering the adaptive immune response. Anti-D-opsonized RBCs may also elicit inhibitory FcgammaRIIB signaling in B cells and prevent B cell activation. The ability of antigen-specific IgG to inhibit antibody responses has also been observed in a variety of animal models immunized with a vast array of different antigens, such as sheep RBCs (SRBC). This effect has been referred to as antibody-mediated immune suppression (AMIS). In animal models, IgG inhibits the antibody response, but the T-cell response and memory may still be intact. IgG does not mask all epitopes, and IgG-mediated RBC clearance or FcgammaRIIB-mediated B-cell inhibition do not appear to mediate the AMIS effect. Instead, IgG appears to selectively disrupt B cell priming, although the exact mechanism remains obscure. While the applicability of animal models of AMIS to understanding the true mechanism of anti-D remains uncertain, the models have nevertheless provided us with insights into the possible IgG effects on the immune response.
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MESH Headings
- Adult
- Animals
- Cattle
- Disease Models, Animal
- Erythroblastosis, Fetal/etiology
- Erythroblastosis, Fetal/immunology
- Erythroblastosis, Fetal/prevention & control
- Erythrocyte Membrane/immunology
- Female
- Fetal Blood/immunology
- Humans
- Immunoglobulin G/immunology
- Immunoglobulin G/therapeutic use
- Infant, Newborn
- Isoantibodies/biosynthesis
- Isoantibodies/immunology
- Isoantibodies/therapeutic use
- Lymphocyte Activation
- Lymphocyte Subsets/immunology
- Mice
- Mice, SCID
- Mice, Transgenic
- Models, Immunological
- Opsonin Proteins/immunology
- Phagocytosis
- Pregnancy
- Rabbits
- Rats
- Receptors, IgG/antagonists & inhibitors
- Receptors, IgG/immunology
- Rh Isoimmunization/therapy
- Rh-Hr Blood-Group System/immunology
- Rho(D) Immune Globulin
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Affiliation(s)
- Davor Brinc
- Canadian Blood Services, Department of Laboratory Medicine of St. Michael's Hospital, Toronto, Ontario, Canada
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31
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Combs MR. Lewis blood group system review. Immunohematology 2009; 25:112-8. [PMID: 20406017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Affiliation(s)
- M R Combs
- Duke University Hospital, Transfusion Service, Box 2928, Room 1720 N 2424 Erwin Road, Durham, North Carolina 27710, USA
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32
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Reid ME. MNS blood group system: a review. Immunohematology 2009; 25:95-101. [PMID: 20406014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The MNS blood group system is second only to the Rh blood group system in its complexity. Many alloantibodies to antigens in the MNS system are not generally clinically significant although antibodies to low-prevalence and high-prevalence MNS antigens have caused hemolytic disease of the fetus and newborn. The MNS antigens are carried on glycophorin A (GPA), glycophorin B (GPB), or hybrids thereof, which arise from single-nucleotide substitution, unequal crossing over, or gene conversion between the glycophorin genes. Antigens in the MNS system are fully developed at birth. This review summarizes aspects of the MNS system, including the molecular basis of some antigens in the MNS blood group system. Readers are referred to existing excellent reviews for background information. Throughout this document, information given without references can be found in the reviews listed previously, and the reader is referred to these reviews for references to original reports.
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Affiliation(s)
- M E Reid
- Laboratory of Immunohematology, New York Blood Center, 310 East 67th Street, New York, New York 10065, USA
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Payam Khaja Pasha R, Shokri F. Immunologic basis and immunoprophylaxis of RhD induced hemolytic disease of the newborn (HDN). Iran J Immunol 2008; 5:189-200. [PMID: 19098362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
RhD antigen is the most immunogenic and clinically significant antigen of red blood cells after ABO system. It has historically been associated with hemolytic disease of the newborn (HDN) which is now routinely prevented by the administration of polyclonal anti-D immunoglobulin. This management of HDN has proven to be one of the most successful cases of prophylactic treatment based on antibody mediated immune suppression (AMIS). Despite the increasing efficiency of treatment, the mechanism of action of anti-D is not completely defined. There is a widespread interest in obtaining a reliable therapeutic monoclonal anti-D, due to difficulty of maintaining a pool of high titer volunteer donors for plasma collection and also increasing demand for antenatal prophylaxis and safety issues with plasma derived products. Candidate monoclonal anti-D preparations should demonstrate appropriate functionality in both in vitro and in vivo assays comparable to polyclonal anti-D immunoglobulin. These criteria are reviewed in addition to the factors regulating development of D specific immune response in D negative individuals and its suppression in HDN prophylaxis.
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Affiliation(s)
- Roya Payam Khaja Pasha
- StemCore Laboratories, Sprott Centre for Stem Cell Research, Ottawa Health Research Institute, Ottawa, Canada
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Thakral B, Agrawal SK, Dhawan HK, Saluja K, Dutta S, Marwaha N. First report from India of haemolytic disease of newborn by anti-c and anti-E in Rh (D) positive mothers. ACTA ACUST UNITED AC 2008; 12:377-80. [PMID: 17852437 DOI: 10.1080/10245330701448438] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
In India, at the majority of the transfusion centers, antenatal antibody screening is done only in Rh (D) negative mothers. We report here two cases of haemolytic disease of newborn (HDN) by maternal alloimmunization to anti-c in one case, and both anti-c and anti-E in the second case. Both women were Rh (D) positive mothers and HDN was detected postnatally by a positive direct antiglobulin test (DAT) in their newborns. These cases highlight the importance of routine antenatal antibody screening even in Rh (D) positive females. A close follow-up throughout pregnancy is required if irregular antibodies are present so that antigen negative, crossmatch compatible blood can be provided in a timely manner for intra-uterine or exchange transfusions.
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Affiliation(s)
- Beenu Thakral
- Department of Transfusion Medicine, Postgraduate Institute of Medical Education Research, Chandigarh, India
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Fernández-Jiménez MC, Jiménez-Marco MT, Hernández D, González A, Omeñaca F, de la Cámara C. Treatment with plasmapheresis and intravenous immunoglobulin in pregnancies complicated with anti-PP1
Pk
or anti-K immunization: a report of two patients. Vox Sang 2008; 80:117-20. [PMID: 11348543 DOI: 10.1046/j.1423-0410.2001.00021.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND AND OBJECTIVES In addition to anti-D alloantibody, other antibodies such as anti-K antibody and anti-PP1Pk antibody have been reported to cause severe haemolytic disease of the newborn (HDN). HDN caused by anti-K results not only from destruction of red cells but also from suppression of erythropoiesis. Anti-PP1Pk has been associated with abortion early in pregnancy. We report on two patients, one with anti-PP1Pk and the other with anti-K, who were treated with plasmapheresis and intravenous immunoglobulin (IVIG) during pregnancy in an attempt to reduce the plasma antibody levels. MATERIALS AND METHODS The patient with anti-PP1Pk had lost all seven previous fetuses in the first trimester and therefore therapy in this patient was started at 8 weeks of gestation. The second patient had been sensitized to the K antigen through blood transfusion and had had two intrauterine fetal deaths at 26 weeks of gestation with signs of hydrops fetalis. Treatment in this patient was started during the 16th week of pregnancy. RESULTS As a result of therapy, the antibody titre was reduced in both patients. In the first patient a healthy infant was delivered by Caesarean section at 37 weeks of gestation. The second patient gave birth at 36 weeks of gestation. Neither newborn required exchange transfusion. CONCLUSION In our two patients, plasmapheresis combined with IVIG proved successful in the management of fetomaternal incompatibilities where the mechanism of fetal loss differs from the classical anti-D.
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Affiliation(s)
- M C Fernández-Jiménez
- Department of Hematology and Hemotherapy, Hospital La Paz, Universidad Autónoma de Madrid, Madrid, Spain.
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37
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Affiliation(s)
- K M Mayne
- Oxford Regional Blood Transfusion Centre, John Radcliffe Hospital
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38
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Abstract
Eighty-seven pairs of samples of maternal serum and amniotic fluid were analysed for anti-D levels at varying stages of gestation. There was a marked positive correlation between the maternal serum level and that in the amniotic fluid. The ratio of maternal serum anti-D to liquor anti-D was calculated for 61 pairs of data and was found to increase as gestation advanced. However, it was neither of clinical value in predicting the severity of haemolytic disease of the newborn nor the Rh(D) group of the fetus.
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39
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Dulay AT, Buhimschi IA, Zhao G, Luo G, Abdel-Razeq S, Cackovic M, Rosenberg VA, Pettker CM, Thung SF, Bahtiyar MO, Bhandari V, Buhimschi CS. Nucleated red blood cells are a direct response to mediators of inflammation in newborns with early-onset neonatal sepsis. Am J Obstet Gynecol 2008; 198:426.e1-9. [PMID: 18395034 DOI: 10.1016/j.ajog.2008.01.040] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2007] [Revised: 01/16/2008] [Accepted: 01/24/2008] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The objective of the study was to test the hypothesis that inflammation modulates fetal erythroblastosis and/or the release of nucleated red blood cells (NRBCs) independent of hypoxia or fetal stress. We sought to determine whether fetal inflammation is associated with an elevation in neonatal NRBC count in the setting of inflammation-associated preterm birth. STUDY DESIGN The relationships between peripheral NRBC count, histological chorioamnionitis, umbilical cord interleukin (IL)-6, erythropoietin (EPO), cortisol, and acid-base status were analyzed in 68 preterm singletons, born to mothers who had an amniocentesis to rule out infection. Proteomic profiling of amniotic fluid identified presence of intraamniotic inflammation according to established parameters. NRBC counts were assessed within 1 hour of birth. Early-onset neonatal sepsis (EONS) was established based on hematological and microbiological indices. IL-6, EPO, and cortisol levels were measured by immunoassays. Fetal acid-base status was determined within 10 minutes of delivery. Parametric or nonparametric statistics were used. RESULTS Fetuses with EONS (n = 19) were delivered at earlier gestational ages (mean +/- SD: 27.1 +/- 2.8 weeks, P = .001) and more often by mothers with intraamniotic inflammation (P = .022) and histological chorioamnionitis (P < .001). Neonates with EONS had higher absolute NRBC counts (P = .011). NRBC counts were directly correlated with cord blood IL-6 levels (P < .001) but not with EPO, cortisol or parameters of acid-base status levels regardless of EONS status. These relationships remained following correction for gestational age, diabetes, intrauterine growth restriction, and steroid exposure. CONCLUSION In the setting of inflammation-associated preterm birth and in the absence of hypoxia, elevations in NRBCs in the early neonatal period may be a direct response of exposure to inflammatory mediators in utero.
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Affiliation(s)
- Antonette T Dulay
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, New Haven, CT 06520-8063, USA.
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Dohmen SE, Muit J, Ligthart PC, Verhagen OJHM, van der Schoot CE. Anti-e found in a case of hemolytic disease of the fetus and newborn make use of the IGHV3 superspecies genes. Transfusion 2008; 48:194-5. [PMID: 18184235 DOI: 10.1111/j.1537-2995.2007.01559.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Santiago JC, Ramos-Corpas D, Oyonarte S, Montoya F. Current clinical management of anti-Kell alloimmunization in pregnancy. Eur J Obstet Gynecol Reprod Biol 2008; 136:151-4. [PMID: 17481801 DOI: 10.1016/j.ejogrb.2007.03.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2005] [Revised: 03/13/2007] [Accepted: 03/16/2007] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Few reports have been published of the current clinical management of anti-Kell alloimmunization in pregnancy; its low frequency of occurrence means that the few long series published have covered very ample time periods in which different kinds of clinical management have overlapped. The objective of the present paper is to present our experience in the current clinical management of pregnant women who are positive for the anti-Kell antibody. STUDY DESIGN A retrospective analysis was carried out of the case histories of pregnant women who were alloimmunized for the Kell antigen and who were studied and/or treated at the Department of Fetal Medicine in the Virgen de las Nieves University Hospital in Granada (Spain), between 2000 and 2004. The clinical management included the basal measurement of the titre of antibodies, the identification of the paternal phenotype (and that of the fetus, if necessary), the ultrasonographic monitoring of the fetus to detect signs of anaemia, sampling of fetal blood by cordocentesis when fetal anaemia was suspected, and fetal intravascular transfusion when necessary. RESULTS Of the 10 pregnancies with anti-Kell antibodies, The Kell antigen was confirmed in the fetus in three cases, in all of which moderate to severe fetal anaemia developed, requiring fetal intravascular transfusions. Although one of the fetus developed antenatal hydrops, a good perinatal result was advised. CONCLUSIONS The current approach to anti-Kell alloimmunization enables pregnant women who have Kell-positive fetuses to be treated successfully.
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Affiliation(s)
- Juan C Santiago
- Unidad de Medicina Fetal, Servicio de Obstetricia y Ginecología del Hospital Universitario V. De las Nieves, 180-Granada, Spain
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Oh EJ, Jekarl DW, Jang HS, Park HI, Park YJ, Choi HA, Chun CS, Kim Y, Kim HH. Severe hemolytic disease of the newborn due to anti-Di b treated with phototherapy and intravenous immunoglobulin. Ann Clin Lab Sci 2008; 38:80-82. [PMID: 18316786] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The Di(b) antigen usually occurs with high incidence, except in certain Asian and South American Indian populations. In general, hemolysis caused by anti-Di(b) is not severe and its clinical course is benign. We report a Korean neonate with severe hemolytic disease of the newborn caused by anti-Di(b). The phenotype and genotype of the Diego blood group system of the patient and his mother were Di(a+b+) and Di(a+b-), respectively. The mother's serum and eluate from the neonate's erythrocytes contained anti-Di(b). This case was successfully managed with phototherapy and high dose iv immunoglobulin. Since most commercial antibody detection panels do not contain Di(b-) red cells, it is important to consider anti-Di(b) in cases of hemolytic disease of the newborn caused by an antibody against a high frequency antigen.
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Affiliation(s)
- Eun-Jee Oh
- Department of Laboratory Medicine, College of Medicine, Catholic University of Korea, 505 Banpo-dong Seocho-ku, Seoul, 137-040, South Korea.
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Brinc D, Le-Tien H, Crow AR, Freedman J, Lazarus AH. IgG-mediated immunosuppression is not dependent on erythrocyte clearance or immunological evasion: implications for the mechanism of action of anti-D in the prevention of haemolytic disease of the newborn? Br J Haematol 2007; 139:275-9. [PMID: 17897303 DOI: 10.1111/j.1365-2141.2007.06764.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Haemolytic disease of the newborn (HDN) can be prevented by the passive administration of anti-D to the mother. The most accepted theory to describe this activity of anti-D is based upon its ability to clear opsonized erythrocytes before their recognition by the maternal immune system. We examined this hypothesis using a murine model of immunity to foreign erythrocytes. Whereas transfusion of foreign erythrocytes into mice induced immunoglobulin (Ig)M and IgG antibodies specific for the erythrocytes, these humoral immune responses were inhibited when the erythrocytes were opsonized with IgG. To specifically determine if immunological evasion occurs with these opsonized erythrocytes, we examined T-cell responses from these mice. An erythrocyte-specific T-cell response was clearly detected. We then tested whether phagocytosis of opsonized erythrocytes is sufficient to prevent the antibody response. We exposed mononuclear phagocytic cells to sheep red blood cells (SRBC) in vitro and then adoptively transferred the phagocytic cells to recipient mice; opsonized SRBC unexpectedly increased, rather than decreased, the antibody response. These data indicate that removal of opsonized erythrocytes by phagocytic cells does not prevent their immunological recognition and suggest that antigen clearance may not be the predominant mechanism of anti-erythrocyte action in downregulating the humoral immune response.
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Affiliation(s)
- Davor Brinc
- The Canadian Blood Services, Department of Laboratory Medicine, St Michael's Hospital, Toronto, ON, Canada
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de Graaf-Roelfsema E, van der Kolk JH, Boerma S, van Haeringen H. Non-specific haemolytic alloantibody causing equine neonatal isoerythrolysis. Vet Rec 2007; 161:202-4. [PMID: 17693632 DOI: 10.1136/vr.161.6.202] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- E de Graaf-Roelfsema
- Department of Equine Sciences, Faculty of Veterinary Medicine, Utrecht University, PO Box 80.152, 3508 TD Utrecht, The Netherlands
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Gursoy T, Tekinalp G, Yigit S, Korkmaz A, Onderoglu L. Treatment of MN subgroup incompatibility with intravenous immunoglobulin in a newborn. Pediatr Int 2007; 49:97-9. [PMID: 17250514 DOI: 10.1111/j.1442-200x.2007.02319.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tugba Gursoy
- Department of Pediatrics, Neonatology Unit, Hacettepe University Faculty of Medicine, Ankara, Turkey.
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Huang WM, Chen HW, Li N, Yang M, Jiao PY. [Clinical study of early interventions for ABO hemolytic disease of the newborn]. Nan Fang Yi Ke Da Xue Xue Bao 2006; 26:1350-1, 1355. [PMID: 16982453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
OBJECTIVE To investigate therapeutic effect of high-dose intravenous immunoglobulin (IVIG) for early management of ABO hemolytic disease of the newborn (ABO-HDN). METHODS A total of 121 cases with ABO-HDN were randomly divided into treatment group (n=61) and control group (n=60). In addition to the routine treatment of the control group, IVIG were given at a daily dose of 400 mg/kg to the cases in the treatment group for 2-3 times, and therapeutic effects were evaluated and compared between the two groups. RESULTS The serum total billirubin concentration on the third day after treatment (153.42-/+45.21 micromol/L) and mean daily serum total billirubin concentration reduction (56.49-/+24.05 micromol/L) in treatment group were lower than those in the control group (P<0.01). The jaundice resolution time (23.51-/+11.19 h) and the phototherapy time (3.01-/+0.89 h) for billirubinemia treatment in treatment group were shorter than those in the control group (P<0.01). The patients in the the treatment group had higher hemoglobin level after treatment (15.59-/+2.01 g/L) than those of the control group (P<0.01). CONCLUSION High-dose IVIG can effectively arrest the progression of hemolytic disease, quickly reduce serum total billirubin concentration and shorten phototherapy time for early treatment of ABO-HDN.
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Affiliation(s)
- Wei-min Huang
- Department of Neonatology, Nangfang Hospital, Southern Medical University, Guangzhou 510515, China.
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Branch DR, Shabani F, Lund N, Denomme GA. Antenatal administration of Rh-immune globulin causes significant increases in the immunomodulatory cytokines transforming growth factor-β and prostaglandin E2. Transfusion 2006; 46:1316-22. [PMID: 16934066 DOI: 10.1111/j.1537-2995.2006.00898.x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Production of specific cytokines in response to administration of Rh-immune globulin (RhIG) was examined to assess the mechanism of inhibition of the anti-D production and prevention of hemolytic disease of the newborn (HDN). STUDY DESIGN AND METHODS Plasma levels of 17 different cytokines before and 48 hours after antenatal administration of anti-D were measured in 10 women candidates for prophylaxis with RhIG. RESULTS No striking changes were observed in levels of the cytokines interleukin (IL)-1 sRII, IL-12 p40, IL-16, or monocyte chemoattractant protein-1. Levels of IL-4, -5, -10, -13, and -17; macrophage inflammatory protein-1alpha; granulocyte-macrophage-colony-stimulating factor; tumor necrosis factor-beta; and interferon-gamma remained below detection levels both before and after testing. IL-1ra levels, however, showed a slight to moderate decrease in 7 of 10 women after RhIG administration. In contrast, levels of TGF-beta1 increased more than 1.3-fold in 7 of 10 women and more than 2-fold in 4 of 10 women; in 1 instance the increase was more than 5-fold and this woman also had a significant increase in TGF-beta2. In addition to TGF-beta, 5 of 10 women had a modest increase (>1.5-fold) in prostaglandin E2 (PGE2). Analyses of the combined results of the 10 women showed that increases in both TGF-beta1 and PGE2 after RhIG were significant. CONCLUSION These results indicate that RhIG prophylaxis can induce higher than baseline levels of two strongly immunomodulatory cytokines, TGF-beta and PGE2. These findings represent one possible mechanism for the inhibition of the primary immune response to the D antigen in women receiving RhIG prophylaxis for prevention of HDN.
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Affiliation(s)
- Donald R Branch
- Transfusion Immunology Hub, Research & Development, Canadian Blood Services, Toronto, Ontario, Canada.
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Lobo GAR, Nardozza LMM, Camano L. Non-anti-D antibodies in red-cell alloimmunization. Int J Gynaecol Obstet 2006; 94:139-40. [PMID: 16828096 DOI: 10.1016/j.ijgo.2006.05.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2006] [Revised: 04/19/2006] [Accepted: 05/19/2006] [Indexed: 11/30/2022]
Affiliation(s)
- G A R Lobo
- Fetal Medicine Sector, Obstetrics Department, São Paulo Federal University-Paulista Medical School, São Paulo, Brazil
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