1
|
Van den Abeele T, Delforge ML, Boel A, Reynders M, Padalko E. Comparison of 4 commercial enzyme immunoassays for serology testing of human parvovirus B19 infection. Diagn Microbiol Infect Dis 2021; 101:115489. [PMID: 34352435 DOI: 10.1016/j.diagmicrobio.2021.115489] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Revised: 05/25/2021] [Accepted: 07/11/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND Parvovirus B19 is a pathogenic virus often diagnosed by serology, yet little is known about analytical performance of commercial enzyme immunoassays (EIAs). OBJECTIVE To investigate performance of 4 EIAs for parvovirus B19 IgM and IgG: Liaison, Euroimmun, Mikrogen and Virion/Serion. STUDY DESIGN To compare 4 EIAs to Biotrin's ELISA on 168 samples and determine consensus score for discordant samples using Mikrogen's confirmatory line assay. RESULTS Two thirds of results for IgM/IgG were identical for all 4 EIAs and Biotrin. Liaison shows the highest IgM sensitivity, but has low specificity. Euroimmun lacks IgM sensitivity. Mikrogen had a good overall performance, but had the lowest IgG specificity. Virion/Serion had variable performance with a low IgM specificity and the most borderline and cross-reactive results. CONCLUSIONS Liaison and Mikrogen have similar performance to Biotrin's ELISA. Euroimmun lacks sensitivity and Virion/Serion produced many borderline and cross-reactive results.
Collapse
Affiliation(s)
- Tim Van den Abeele
- Laboratory of Medical Microbiology, Ghent University Hospital, Gent, Belgium
| | - Marie-Luce Delforge
- National Reference Center for Congenital Infections, Erasme University Hospital, Brussels, Belgium
| | - An Boel
- Department of Microbiology, OLV Hospital, Aalst, Belgium
| | - Marijke Reynders
- Department of Medical Microbiology, Sint-Jan Hospital, Bruges, Belgium
| | - Elizaveta Padalko
- Laboratory of Medical Microbiology, Ghent University Hospital, Gent, Belgium.
| |
Collapse
|
2
|
Abstract
Parvovirus B19 (B19V) and human bocavirus 1 (HBoV1), members of the large Parvoviridae family, are human pathogens responsible for a variety of diseases. For B19V in particular, host features determine disease manifestations. These viruses are prevalent worldwide and are culturable in vitro, and serological and molecular assays are available but require careful interpretation of results. Additional human parvoviruses, including HBoV2 to -4, human parvovirus 4 (PARV4), and human bufavirus (BuV) are also reviewed. The full spectrum of parvovirus disease in humans has yet to be established. Candidate recombinant B19V vaccines have been developed but may not be commercially feasible. We review relevant features of the molecular and cellular biology of these viruses, and the human immune response that they elicit, which have allowed a deep understanding of pathophysiology.
Collapse
Affiliation(s)
- Jianming Qiu
- Department of Microbiology, Molecular Genetics and Immunology, University of Kansas Medical Center, Kansas City, Kansas, USA
| | | | - Neal S Young
- Hematology Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| |
Collapse
|
3
|
de Ory F, Minguito T, Echevarría JE, del Mar Mosquera M, Fuertes A. Comparative evaluation of tests for detection of parvovirus B19 IgG and IgM. APMIS 2013; 122:223-9. [DOI: 10.1111/apm.12127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 01/03/2013] [Accepted: 05/01/2013] [Indexed: 11/28/2022]
Affiliation(s)
- Fernando de Ory
- Instituto de Salud Carlos III; Centro Nacional de Microbiología; Majadahonda
| | - Teodora Minguito
- Instituto de Salud Carlos III; Centro Nacional de Microbiología; Majadahonda
| | | | | | - Antonio Fuertes
- Servicio de Microbiología; Hospital 12 de Octubre; Madrid Spain
| |
Collapse
|
4
|
Human parvovirus b19 infection in patients with coronary atherosclerosis. Arch Med Res 2010; 40:612-7. [PMID: 20082878 DOI: 10.1016/j.arcmed.2009.09.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2009] [Accepted: 08/31/2009] [Indexed: 11/23/2022]
Abstract
BACKGROUND AND AIMS The identification of possible pathogens for an infectious etiology of atherosclerotic coronary artery disease (CAD) is an expanding field. The present study was undertaken to explore the role of parvovirus B19, a potent infectious agent. METHODS A total of 565 patients were analyzed (90 patients with CAD, and 475 controls). Serologic analysis for human paravovirus B19 (B19) specific IgM and IgG was carried out in all patients. In addition, tissue specimens were obtained from five patients who received heart transplants. Direct in situ polymerase chain reaction (PCR) and immunocytochemistry were performed in the samples to localize B19 DNA. RESULTS Enzyme immunoassay showed that the seropositive rate of anti-B19 IgG in patients with CAD was 1.5- to 2.7-fold more frequent than in healthy controls. Clinical characteristics did not affect the prevalence of seropositivity for B19. However, anti-B19 IgM and B19-specific DNA were not detected in healthy or individuals with CAD. Furthermore, nonradioactive in situ PCR found that the majority of B19-specific DNA was located in the endothelial cells of the thickened intima. CONCLUSIONS Our results first demonstrate a seroepidemiological and histopathological association between chronic B19 infection and CAD, suggesting that B19 infection may have a potential role in the pathogenesis of coronary atherosclerosis.
Collapse
|
5
|
Weissbrich B, Süß-Fröhlich Y, Girschick HJ. Seroprevalence of parvovirus B19 IgG in children affected by juvenile idiopathic arthritis. Arthritis Res Ther 2008; 9:R82. [PMID: 17760961 PMCID: PMC2206386 DOI: 10.1186/ar2281] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 07/29/2007] [Accepted: 08/30/2007] [Indexed: 11/28/2022] Open
Abstract
Parvovirus (PV) B19 is the causative agent of the childhood disease erythema infectiosum. An association of PV B19 with chronic arthropathies, sometimes resembling rheumatoid arthritis or juvenile idiopathic arthritis (JIA), has repeatedly been described. Other studies, however, have failed to identify any such relationship. In order to study further whether there is a link between PV B19 and JIA, we determined the prevalence of PV B19 specific IgG antibodies in serum samples from children with rheumatoid diseases and compared it with the prevalence in unaffected children We reasoned that if there is an association between PV B19 and JIA, then the prevalence of PV B19 IgG in the children with JIA should be higher than in the control group. PV B19 IgG status was tested in 406 children with JIA and related diseases, and in 146 children constituting a control group. The percentage of PV B19 IgG positive children was not significantly elevated in the disease subgroups compared with age-matched control groups. In conclusion, our findings do not support the hypothesis that human parvovirus B19 is involved in the pathogenesis of JIA.
Collapse
Affiliation(s)
- Benedikt Weissbrich
- Institute of Virology and Immunobiology, University of Würzburg, Versbacher Str 7, 97078 Würzburg, Germany
| | - Yvonne Süß-Fröhlich
- Institute of Virology and Immunobiology, University of Würzburg, Versbacher Str 7, 97078 Würzburg, Germany
- Section of Paediatric Rheumatology, Immunology and Infectious diseases, Children's Hospital, University of Würzburg, Josef-Schneider-Str 2, 97080 Würzburg, Germany
| | - Hermann J Girschick
- Section of Paediatric Rheumatology, Immunology and Infectious diseases, Children's Hospital, University of Würzburg, Josef-Schneider-Str 2, 97080 Würzburg, Germany
| |
Collapse
|
6
|
Corcoran A, Doyle S. Advances in the biology, diagnosis and host-pathogen interactions of parvovirus B19. J Med Microbiol 2004; 53:459-475. [PMID: 15150324 DOI: 10.1099/jmm.0.05485-0] [Citation(s) in RCA: 126] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Increased recognition of parvovirus B19 (B19), an erythrovirus, as a significant human pathogen that causes fetal loss and severe disease in immunocompromised patients has resulted in intensive efforts to understand the pathogenesis of B19-related disease, to improve diagnostic strategy that is deployed to detect B19 infection and blood-product contamination and, finally, to elucidate the nature of the cellular immune response that is elicited by the virus in diverse patient cohorts. It is becoming clear that at least three related erythrovirus strains (B19, A6/K71 and V9) are circulating in the general population and that viral entry into target cells is mediated by an expanding range of cellular receptors, including P antigen and beta-integrins. Persistent infection by B19 is emerging as a contributory factor in autoimmune disease, a hypothesis that is constrained by the detection of B19 in the skin of apparently healthy individuals. B19 infection during pregnancy may account for thousands of incidences of fetal loss per annum in Europe, North America and beyond, yet there is currently only minimal screening of pregnant women to assess serological status, and thereby risk of infection, upon becoming pregnant. Whilst major advances in diagnosis of B19 infection have taken place, including standardization of serological and DNA-based detection methodologies, blood donations that are targeted at high-risk groups are only beginning to be screened for B19 IgG and DNA as a means of minimizing exposure of at-risk patients to the virus. It is now firmly established that a Th1-mediated cellular immune response is mounted in immunocompetent individuals, a finding that should contribute to the development of an effective vaccine to prevent B19 infection in selected high-risk groups, including sickle-cell anaemics.
Collapse
Affiliation(s)
- Amanda Corcoran
- National Institute for Cellular Biotechnology, Department of Biology, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland
| | - Sean Doyle
- National Institute for Cellular Biotechnology, Department of Biology, National University of Ireland Maynooth, Maynooth, Co. Kildare, Ireland
| |
Collapse
|
7
|
Butchko AR, Jordan JA. Comparison of three commercially available serologic assays used to detect human parvovirus B19-specific immunoglobulin M (IgM) and IgG antibodies in sera of pregnant women. J Clin Microbiol 2004; 42:3191-5. [PMID: 15243081 PMCID: PMC446231 DOI: 10.1128/jcm.42.7.3191-3195.2004] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2004] [Revised: 02/26/2004] [Accepted: 04/03/2004] [Indexed: 11/20/2022] Open
Abstract
A split-sample study was conducted to evaluate the performances of three enzyme immunoassays (EIAs) utilizing one or more conformational antigens to detect human parvovirus B19 (B19V)-specific immunoglobulin M (IgM) or IgG in the sera of 198 pregnant women. We compared EIAs available from Biotrin International, Inc. (Dublin, Ireland), Medac Diagnostika (Wedel, Germany), and Mikrogen (Martinsried, Germany). Specimens with discordant results were analyzed further using an immunofluorescence assay (Biotrin). Equivocal data accounted for close to half of all the discrepant results for both IgM and IgG, with 7 of 15 discrepant results from the Medac and Mikrogen kits involving equivocal data and the Biotrin kit giving a single equivocal result. For each specimen, a consensus was established from the four test results if agreement occurred among at least three of four results. Overall, the highest percentage of agreement with the consensus results was seen when Biotrin kits were used; 194 (100%) of 194 and 194 (99.5%) of 195 results for IgM and IgG, respectively, agreed with the consensus results. When Medac kits were used, 189 (97.4%) of 194 and 191 (97.9%) of 195 results for IgM and IgG, respectively, agreed with the consensus, and when Mikrogen kits were used, 179 (92.3%) of 194 and 193 (99%) of 195 results for IgM and IgG, respectively, agreed with the consensus. Given the consensus results, the Medac EIA appeared to generate presumed false-positive results for IgM and the Mikrogen EIA appeared to generate presumed false-positive results for IgG and IgM. In summary, the Biotrin EIAs produced far fewer equivocal results than the other assays and results of the Biotrin EIAs agreed more often with the consensus results than did those of the other commercially available EIAs for detecting B19V-specific IgM and IgG antibodies.
Collapse
Affiliation(s)
- Allyson R Butchko
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | | |
Collapse
|
8
|
Abstract
The development of an acute parvovirus B-19 infection during pregnancy can cause pregnancy complications
ranging from early pregnancy loss to nonimmune hydrops. There is no treatment, but preventive measures can be
used to decrease perinatal mortality. The diagnosis is made on the basis of clinical suspicion and serology. If the fetus
exhibits hydrops in the latter part of pregnancy, the main treatment options include either correcting the associated
anemia with intrauterine blood transfusion or birth with extrauterine management. Although the serious problems
associated with this virus during pregnancy are uncommon, they can be fatal. In view of this, a pregnant woman
who is antibody negative should try to avoid contact with large groups of young children in order to decrease
contact with potential vectors.
Collapse
|
9
|
Abstract
Several aspects of emerging pediatric cutaneous infections are of importance to the clinician. New manifestations of parvovirus infection should be recognized promptly, especially because transmission to susceptible populations might lead to serious complications. In the immunocompromised pediatric population, the outcome of cutaneous mold infections can be improved with prompt recognition and initiation of treatment. The incidence of community-acquired MRSA infections in pediatrics is becoming more than a regional concern, and this coincides with the issue of limited antibiotic susceptibility for MRSA as well as other infections. New antibiotics such as linezolid are emerging as potential treatments for drug-resistant pathogens. An older group of antibiotics, the fluoroquinolones, appear to be well tolerated in children and should not be withheld from this population when the benefits of treatment out-weigh the risks.
Collapse
Affiliation(s)
- Denise Metry
- Department of Dermatology, Texas Children's Hospital, Baylor College of Medicine, 6621 Fannin Street, CC 620.16 6560, Houston, TX 77030-2399, USA.
| | | |
Collapse
|
10
|
Jordan JA. Appreciating the differences between immunoassays used to diagnose maternal parvovirus B19 infection: understanding the antigen before interpreting the results. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1068-607x(02)00108-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
11
|
Wermelinger MCDMW, Oelemann WMR, Lima de Mendonça MC, Naveca FG, von Hubinger MG. Detection of human parvovirus B19 infection: a study of 212 suspected cases in the state of Rio de Janeiro, Brazil. J Clin Virol 2002; 25:223-30. [PMID: 12367658 DOI: 10.1016/s1386-6532(02)00014-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND Parvovirus B19 infections are associated with different clinical manifestations that vary from symptom-less to severe. The main clinical manifestations are erythema infectiosum or fifth disease, transient aplastic crisis in individuals with hemoglobinopathies, chronic anemia in the immunocompromised, acute polyarthralgia syndrome in adults, hydrops fetalis, spontaneous abortion and stillbirth. Although the classical features of B19 and rubella infections are distinct, uncommon presentations can lead to misdiagnosis. OBJECTIVE The goal of this study was to assess the occurrence of parvovirus B19 (B19) infection in patients with clinical signs of toxoplasmosis or rubella, both of which were not confirmed by laboratorial techniques. STUDY DESIGN Serum samples from 214 patients were collected between January 1996 and December 1997 in the state of Rio de Janeiro, Brazil, B19 specific IgG and IgM were detected by using commercial enzyme-linked immunosorbent assays (ELISA), and viral nucleic acid was detected employing a nested polymerase chain reaction (PCR) protocol. RESULTS Combining the results obtained by IgM ELISA and PCR, 14.5% of the samples were positive in one or both tests, with a concordance of 92.5% between the two techniques. CONCLUSIONS Specimens collected in 16 out of 22 municipalities were positive in at least one out of the three tests employed, indicating that parvovirus B19 circulates in several regions of the state of Rio de Janeiro.
Collapse
|
12
|
Abstract
Infection with parvovirus B19 may result in a wide range of dermatologic manifestations. The specific skin findings include erythema infectiosum and papular purpuric "gloves-and-socks" syndrome. The nonspecific findings include reticular erythema, maculopapular eruptions, and petechiae and purpura, as well as other less frequently described findings. Associations with other dermatologic diseases, such as erythema multiforme and erythema nodosum, also have been described. A role in the pathogenesis of various collagen vascular disorders has been suggested and is under investigation. The diagnosis of infection rests on the typical clinical findings. Whenever parvovirus B19 infection is diagnosed, the physician must ensure that neither the patient nor his or her contacts is a member of certain vulnerable populations. In these populations, infection with parvovirus B19 may result in devastating complications. The vulnerable populations include those with hematologic disease, immunosuppressed patients, and pregnant women. Treatment of infection in the healthy immunocompetent individual is asymptomatic, and the acute infections typically resolve without complications.
Collapse
Affiliation(s)
- Rajani Katta
- Department of Dermatology, Baylor College of Medicine, 6560 Fannin, Suite 802, Houston, TX 77030, USA
| |
Collapse
|
13
|
Pereira RF, Paula WN, Cubel RDC, Nascimento JP. Anti-VP1 and anti-VP2 antibodies detected by immunofluorescence assays in patients with acute human parvovirus B19 infection. Mem Inst Oswaldo Cruz 2001; 96:507-13. [PMID: 11391423 DOI: 10.1590/s0074-02762001000400011] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Acute human parvovirus B19 infection is followed by an antibody response to the structural proteins of the viral capsid (VP1 and VP2). We used 80 sera collected from 58 erythema infectiosum and 6 transient aplastic crisis patients to test IgM and IgG antibodies against these two proteins in an immunofluorescence assay (IFA) using Sf9 cells infected with recombinant baculovirus expressing either VP1 or VP2 antigen. Although less sensitive than IgM capture enzyme immunoassay using native antigen (MACEIA), we could detect anti-VP1 or anti-VP2 IgM antibodies by IFA in 49 patients with acute infection (76.6%). Detection of IgG anti-VP1 and anti-VP2 by IFA, however, was as sensitive as IgG detection by indirect enzyme immunoassay. By applying IgG avidity IFA to sera of the 15 IgM IFA negative patients we were able to confirm acute infection in further 12 cases by IFA. Overall, acute infection was confirmed by IFA in 61 (95.3%) of the 64 patients.
Collapse
Affiliation(s)
- R F Pereira
- Departamento de Microbiologia e Parasitologia, Instituto Biomédico, UFF, Niterói, RJ, Brasil
| | | | | | | |
Collapse
|
14
|
Doyle S, Kerr S, O'Keeffe G, O'Carroll D, Daly P, Kilty C. Detection of parvovirus B19 IgM by antibody capture enzyme immunoassay: receiver operating characteristic analysis. J Virol Methods 2000; 90:143-52. [PMID: 11064115 DOI: 10.1016/s0166-0934(00)00227-5] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Parvovirus B19 infection can cause severe effects in high-risk groups including pregnant women and immunocompromised individuals. Although serological detection of B19 infection is commonplace, minimal information is available on the absolute performance characteristics of various tests for the detection of B19 IgM. The performance of the first parvovirus B19 IgM enzyme immunoassay to be cleared by the US Food and Drug Administration (FDA) is described. The immunoassay cut-off has been established using receiver operating characteristic (ROC) analysis giving a sensitivity and specificity of detection of 89.1 and 99.4%, respectively. No cross-reactivity is observed with rubella or other viral disease IgM which cause similar symptomologies to parvovirus B19. Multi-site reproducibility studies have shown high immunoassay reproducibility with detection rates (observed/expected result) of 100% for nonreactive specimens (N=324) and strongly reactive (N=403), respectively. Immunoassay reproducibility ranged from 11.76 to 17. 46% coefficient of variation for all reactive specimens tested (N=12) whereby each specimen was assayed a total of 81 times. Parvovirus B19 IgM seroprevalence of 1% was observed in a US blood donor population (N=399). In the absence of international performance criteria, this study will be of major benefit to the clinical virologist in assessing immunoassay reliability for the detection of recent infection with parvovirus B19.
Collapse
Affiliation(s)
- S Doyle
- Department of Biology, National University of Ireland, Co. Kildare, Maynooth, Ireland.
| | | | | | | | | | | |
Collapse
|
15
|
Dingli D, Pfizenmaier DH, Arromdee E, Wennberg P, Spittell PC, Chang-Miller A, Clarke BL. Severe digital arterial occlusive disease and acute parvovirus B19 infection. Lancet 2000; 356:312-4. [PMID: 11071192 DOI: 10.1016/s0140-6736(00)02512-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
We report a case of arterial occlusive disease and digital ischaemia associated with acute parvovirus B19 infection. Treatment with intravenous epoprostanol improved her symptoms.
Collapse
|
16
|
Dieck D, Schild RL, Hansmann M, Eis-Hübinger AM. Prenatal diagnosis of congenital parvovirus B19 infection: value of serological and PCR techniques in maternal and fetal serum. Prenat Diagn 1999. [DOI: 10.1002/(sici)1097-0223(199912)19:12<1119::aid-pd716>3.0.co;2-x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
17
|
Affiliation(s)
- B Barton Rogers
- Department of Pathology, Children's Medical Center and The University of Texas Southwestern Medical School, 1935 Motor Street, Dallas, TX 75235, USA
| |
Collapse
|
18
|
Nascimento JP, Mistchenko A, Cohen BJ. Laboratory diagnosis of acute human parvovirus B19 infection by specific IgM detection. Rev Inst Med Trop Sao Paulo 1998; 40:265-6. [PMID: 9876443 DOI: 10.1590/s0036-46651998000400012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- J P Nascimento
- Departamento de Microbiologia e Parasitologia, Instituto Biomédico, UFF, Niterói, RJ, Brasil
| | | | | |
Collapse
|
19
|
Wattre P, Dewilde A, Subtil D, Andreoletti L, Thirion V. A clinical and epidemiological study of human parvovirus B19 infection in fetal hydrops using PCR Southern blot hybridization and chemiluminescence detection. J Med Virol 1998; 54:140-4. [PMID: 9496373 DOI: 10.1002/(sici)1096-9071(199802)54:2<140::aid-jmv12>3.0.co;2-n] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Ninety-eight samples from 80 cases of spontaneous abortions after fetal death or hydrops fetalis from 12,000 pregnant women were examined using PCR. DNA was extracted from amniotic fluid, fetal blood, ascitic fluid and fetal biopsies or placenta specimens using QIA amp kits (QIAGEN). A 270-bp length fragment located within the B19 gene NS1 was amplified using PCR followed by electrophoresis and southern-blot hybridization assay using a horseradish peroxidase-labelled probe and chemiluminescence detection. This assay was able to detect 1 to 10 DNA copies in a 10 microliters sample. Parvovirus B19 was identified in 11 cases (14% of fetal hydrops; 1 case for 1,100 pregnancies). Amniotic fluid was the most common and reliable sample to assess the diagnosis. Gestational age ranged from 17 to 28 weeks (mean 23 weeks). IgM antibodies were detected in 3 maternal sera, 2 patients of which reported an exposure to B19 infection during pregnancy. In 2 cases, intrauterine blood transfusions led to the cessation of symptoms and to birth of normal babies.
Collapse
Affiliation(s)
- P Wattre
- Department of Virology Institut Gernez-Rieux, Hôpital Jeanne de Flandre, Centre Hospitalier Régional et Universitaire, Lille, France
| | | | | | | | | |
Collapse
|