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Pedranti M, Isa MB, Riberi MI, Hernandez G, Alfaro J, Tenaglia M, Colazo Salbetti MB, Mladin JJ, Nates S, Adamo MP. Measles and Rubella Seroprevalence Among Children and Adolescents of Córdoba, Argentina: A Cross-Section Study in the Context of the Elimination Program. Viral Immunol 2023; 36:429-434. [PMID: 37102675 DOI: 10.1089/vim.2022.0181] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 04/28/2023] Open
Abstract
We determined anti-rubella and anti-measles immunoglobulin G (IgG) in 7- to 19-year-old children and adolescents with vaccine only-induced immunity of Córdoba, Argentina, during a 6-month period over 2021-2022. Of the 180 individuals studied, 92.2% and 88.3% were positive for anti-measles and anti-rubella IgG, respectively. No significant differences were found comparing anti-rubella IgG concentrations (p = 0.144) and anti-measles IgG concentrations (p = 0.105) of individuals classified by age, but anti-measles IgG and anti-rubella IgG levels were significantly higher among female individuals compared with males (p = 0.031 and p = 0.036, respectively). Female subjects in the younger age group had higher concentrations of anti-rubella IgG as well (p = 0.020), even when anti-measles IgG concentrations did not differ among female age-subgroups (p = 0.187). In contrast, age subgroups of male individuals did not have significantly different IgG concentrations for rubella (p = 0.745) or measles (p = 0.124). Among samples with discordant results (22/180, 12.6%), 9.1% were negative for rubella but positive for measles; 13.6% were equivocal for rubella and positive for measles; 22.7% were equivocal for rubella and negative for measles, while 54.5% were positive for rubella but negative for measles. The findings indicate a seroprevalence below recommended for preventing measles in the population studied, while they evidence the need for standardization of serological tests for rubella IgG.
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Affiliation(s)
- Mauro Pedranti
- Rubella and Parvovirus Laboratory, Institute of Virology ''Dr. J. M. Vanella,'' Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
- Virology Department, Foundation for the Progress of Medicine, Córdoba, Argentina
| | - María Beatriz Isa
- Laboratory of Viral Gastroenteritis and Measles, Institute of Virology ''Dr. J. M. Vanella,'' Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
- Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina
| | - María Inés Riberi
- Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina
| | - Gabriela Hernandez
- Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina
| | - Jimena Alfaro
- Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina
| | - Magdalena Tenaglia
- Virology Laboratory, Catholic University of Córdoba, Reina Fabiola University Clinic, Córdoba, Argentina
| | - María Belén Colazo Salbetti
- Rubella and Parvovirus Laboratory, Institute of Virology ''Dr. J. M. Vanella,'' Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
| | | | - Silvia Nates
- Director of the Institute of Virology, Institute of Virology ''Dr. J. M. Vanella,'' Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
| | - María Pilar Adamo
- Rubella and Parvovirus Laboratory, Institute of Virology ''Dr. J. M. Vanella,'' Faculty of Medical Sciences, National University of Córdoba, Córdoba, Argentina
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Colazo Salbetti MB, Boggio GA, Abbiatti G, Montañez Sandoz A, Villarreal V, Torres E, Pedranti M, Zalazar JA, Moreno L, Adamo MP. Diagnosis and clinical significance of Human bocavirus 1 in children hospitalized for lower acute respiratory infection: molecular detection in respiratory secretions and serum. J Med Microbiol 2022; 71. [DOI: 10.1099/jmm.0.001595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Introduction. Human bocavirus 1 (HBoV1) infection occurs with viral genome presence in respiratory secretions (RS) and serum, and therefore both samples can be used for diagnosis.
Gap statement. The diagnostic sensitivity of HBoV1 DNA detection in serum and the duration of DNAaemia in severe clinical cases have not been elucidated.
Aim. To determine HBoV1 DNA in serum and RS of paediatric patients hospitalized for lower acute respiratory infection (LARI) and to analyse the clinical–epidemiological features of positive cases.
Methodology. This was a prospective, transverse study. Physicians selected the clinical situations and obtained paired clinical samples (RS and serum) that were tested by PCR/qPCR for HBoV1. Positive cases were analysed considering time of specimen collection, co-detection, clinical manifestations and viral load; statistical significant level was set at α=0.05.
Results. HBoV1 was detected in 98 of 402 cases included (24 %); 18/98 (18 %) patients had the virus detectable in serum and 91/98 (93 %) in RS (P<0.001). Positivity rates were not significantly different in patients with RS and serum collected within or beyond 24 h of admission. Single HBoV1 infection was identified in 39/98 patients (40 %), three patients had HBoV1 in both clinical samples (3/39, 8 %) and 32 (32/39, 82 %) only in RS, 22 of them (69 %) with both clinical samples within 24 h of admission. Cough (P=0.001) and rhinitis (P=0.003) were significantly frequent among them and most patients were diagnosed with bronchiolitis (22/39, 56 %) and pneumonia (9/39, 23 %), which was more frequent compared to cases with co-infection (P=0.04). No significant differences were identified among patients with high, medium or low viral load of HBoV1 regarding rate of positivity in both clinical samples, the time of collection of RS and serum, co-detection, first episode of LARI, clinical manifestations, comorbidity or requirement for assisted ventilation. Intensive care unit (ICU) patients had a significantly higher frequency of detection (P<0.001) and co-detection (P=0.001) compared to patients on standard care.
Conclusions. HBoV1 is prevalent among infant patients hospitalized for LARI and including it in the standard testing can add to the aetiological diagnosis in these cases, especially for patients admitted to the ICU. HBoV1 detection in serum did not contribute significantly to the diagnosis as compared to detection in respiratory secretions.
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Affiliation(s)
- Maria Belen Colazo Salbetti
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Gabriel Amilcar Boggio
- Clínica Privada Vélez Sársfield, Córdoba, Argentina
- Hospital de Niños de la Santísima Trinidad de Córdoba, Argentina
- Cátedra de Clínica Pediátrica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
| | | | | | | | - Erika Torres
- Hospital de Niños de la Santísima Trinidad de Córdoba, Argentina
| | - Mauro Pedranti
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | - Laura Moreno
- Cátedra de Clínica Pediátrica, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
| | - Maria Pilar Adamo
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Bertoldi A, Colazo Salbetti MB, Rodríguez G, Tenaglia M, Hernández G, Alfaro J, Riberi MI, Olivera NL, Pedranti M, Isa MB, Adamo MP. Human parvovirus B19 infection in a pregnant patient resulting in severe hydrops, foetal death and persistent infection. Access Microbiol 2022; 4:acmi000428. [DOI: 10.1099/acmi.0.000428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Accepted: 09/01/2022] [Indexed: 11/06/2022] Open
Abstract
Human parvovirus B19 (B19V) is the aetiological agent of erythema infectiosum. Primary infection during pregnancy can be transmitted to the foetus and cause foetal abnormalities related to depletion of erythrocyte progenitor cells, including congenital anaemia, hydrops, and foetal death. In this paper we report the detection of B19V infection in a pregnant patient, which onset occurred without appreciable signs and symptoms until she developed inappropriate contractions for gestational age and fluid loss. B19V infection resulted in severe hydrops fetalis with a fatal course for the foetus, while persisted in the mother at least 12 months after foetal death. The objective of this report is to highlight the importance of optimizing B19V diagnosis through early suspicion and testing during pregnancy. Knowing the mother’s immune status before or at the beginning of gestation can contribute, together with early diagnosis, to improve the management of patients at risk.
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Affiliation(s)
| | - María Belén Colazo Salbetti
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - Gonzalo Rodríguez
- Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Córdoba, Argentina
| | | | | | - Jimena Alfaro
- Clínica Universitaria Reina Fabiola, Córdoba, Argentina
| | | | | | - Mauro Pedranti
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María Beatriz Isa
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Clínica Universitaria Reina Fabiola, Córdoba, Argentina
| | - Maria Pilar Adamo
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
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Adamo MP, Blanco S, Viale F, Rivadera S, Rodríguez-Lombardi G, Pedranti M, Carrizo H, Gallego S. Human parvovirus B19 frequency among blood donors after an epidemic outbreak: relevance of the epidemiological scenario for transfusion medicine. Heliyon 2020; 6:e03869. [PMID: 32395652 PMCID: PMC7210410 DOI: 10.1016/j.heliyon.2020.e03869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 10/29/2022] Open
Abstract
A retrospective, cross-sectional study was conducted to determine the frequency of human parvovirus B19 (B19V) infected individuals, viral loads and immunity among blood donors from Argentina, in a post-epidemic outbreak period. B19V DNA and specific IgG were tested in minimum study samples of donors attending a blood bank at Córdoba, Argentina, in 2014. Anti-B19V IgM and viral loads were determined in B19V-positive plasma samples. Seven of 731 samples (0.96%) resulted positive, corresponding to individuals aged 32-53 years, four of them repeat donnors and three first-time donors. Viral loads were <103 IU/mL. None had IgM and 6/7 had IgG, one of them at a high level (in the range of 100-200 IU/ml, and the remaining 5 at low to medium level, 5-50 IU/ml). Thus one case was classified as acute infection (DNA+/IgM-/IgG-) and six as potentially persistent infections (DNA+/IgM-/IgG+). No coinfections with other pathogens of mandatory control in the pre-transfusion screening were detected. Prevalence of IgG was 77.9% (279/358). This study provides the first data of B19V prevalence in blood donors in Argentina, demonstrating high rates of acute and persistent B19V infections and high prevalence of anti-B19V IgG in a post-epidemic period. Further research is needed to elucidate mechanisms/factors for B19V persistence as well as follow-up of recipients in the context of haemo-surveillance programs, contributing to the knowledge of B19V and blood transfusion safety.
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Affiliation(s)
- María Pilar Adamo
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
- Corresponding author.
| | - Sebastián Blanco
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
- Fundación Banco Central de Sangre de Córdoba, Córdoba, Argentina
| | - Franco Viale
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
| | - Sabrina Rivadera
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
| | - Gonzalo Rodríguez-Lombardi
- Departamento de Biología Molecular, Laboratorio de Hemoderivados, Universidad Nacional de Córdoba, Argentina
| | - Mauro Pedranti
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
| | - Horacio Carrizo
- Fundación Banco Central de Sangre de Córdoba, Córdoba, Argentina
| | - Sandra Gallego
- Instituto de Virología “Dr. J. M. Vanella”, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina
- Fundación Banco Central de Sangre de Córdoba, Córdoba, Argentina
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Ghietto LM, Cámara A, Zhou Y, Pedranti M, Ferreyra S, Frey T, Cámara J, Adamo MP. High prevalence of human bocavirus 1 in infants with lower acute respiratory tract disease in Argentina, 2007 - 2009. Braz J Infect Dis 2012. [DOI: 10.1590/s1413-86702012000100007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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Ghietto LM, Cámara A, Zhou Y, Pedranti M, Ferreyra S, Frey T, Cámara J, Adamo MP. High prevalence of human bocavirus 1 in infants with lower acute respiratory tract disease in Argentina, 2007-2009. Braz J Infect Dis 2012; 16. [PMID: 22358354 PMCID: PMC7129757 DOI: 10.1016/s1413-8670(12)70272-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
UNLABELLED Human bocavirus (HBoV) is a parvovirus whose association with respiratory disease is currently under investigation. OBJECTIVE To determine HBoV prevalence in children with lower acute respiratory infection. METHODS We investigated HBoV in 433 nasopharyngeal aspirates collected in 2007-2009 from children 0 to 5 years old hospitalized with bronchiolitis or pneumonia in Córdoba, Argentina. RESULTS The general prevalence of HBoV was 21.5% and the positive cases (HBoV+) were more frequent during winter and spring. The mean age of HBoV+ patients was 6.9 months, with 87.1% of the detections corresponding to infants less than 1 year old (among which the prevalence of HBoV was 26.3% in patients < 3 months of age, 22.1% in 3 to 6 months, 25.3% in 6 to 9 months, and 18.8% in 9 to 12 months). The sequence analysis of the NP1 coding region of 15 isolates showed that all isolates from Cordoba were HBoV1 which exhibited a homology of nearly 100% both among themselves and with the originally discovered virus from 2005. CONCLUSION Overall, our results indicate that HBoV is a significant pathogen that contributes to acute respiratory infection both on its own and during coinfection with other viruses.
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Affiliation(s)
- Lucía María Ghietto
- Instituto de Virología “Dr. J.M. Vanella”, Medical School, Universidad Nacional de Córdoba, Argentina
| | - Alicia Cámara
- Instituto de Virología “Dr. J.M. Vanella”, Medical School, Universidad Nacional de Córdoba, Argentina
| | - Yumei Zhou
- Department of Biology, Georgia State University, Atlanta, USA
| | - Mauro Pedranti
- Instituto de Virología “Dr. J.M. Vanella”, Medical School, Universidad Nacional de Córdoba, Argentina
| | | | - Teryl Frey
- Department of Biology, Georgia State University, Atlanta, USA
| | - Jorge Cámara
- Instituto de Virología “Dr. J.M. Vanella”, Medical School, Universidad Nacional de Córdoba, Argentina
| | - Maria Pilar Adamo
- Instituto de Virología “Dr. J.M. Vanella”, Medical School, Universidad Nacional de Córdoba, Argentina,Corresponding author at: Calle Enf. Grodillo Gómez S/N, Ciudad Universitaria, CP 5016, Córdoba, Argentina
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Cuffini C, Alberto Guzmán L, Villegas N, Eduardo Alonso C, Martínez-Riera L, Rodríguez-Fermepín M, Carolina Entrocassi A, Pilar Adamo M, Pedranti M, Zapata M. Isolation of Chlamydophila pneumoniae from atheromas of the carotid artery and their antibiotics susceptibility profile. Enferm Infecc Microbiol Clin 2006; 24:81-5. [PMID: 16545314 DOI: 10.1157/13085013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [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: 11/21/2022]
Abstract
BACKGROUND Atherosclerosis is pathogenically similar to a chronic inflammatory response. Peripheral arterial disease (PAD) is a common manifestation of atherosclerosis. Chlamydophila pneumoniae has been suggested to play a role in the origin of PAD. OBJECTIVE To determine whether C. pneumoniae is present in atherosclerosis lesions of the carotid artery wall in patients with PAD through several diagnostic methods and to characterize C. pneumoniae susceptibility profiles. METHODS The presence of C. pneumoniae in 9 tissue samples from atherosclerotic lesions obtained by carotid endarterectomy was investigated by 3 methods. Karnofsky-fixed specimens were examined by transmission electron microscopy (TEM), isolation of C. pneumoniae was attempted in LLCMK2 cell structure (ICC), and the presence of chlamydial DNA was investigated by polymerase chain reaction (PCR). The in vitro activities of azithromycin, roxithromycin and penicillin were tested in 4 isolations and the reference strain of C. pneumoniae (AR39). RESULTS C. pneumoniae was detected in atherosclerotic plaques from 4 patients with PAD. The pathogen was identified by TEM, PCR and ICC. We report data of the in vitro susceptibility of 4 strains. These strains did not differ from respiratory AR39 strain in their susceptibility patterns to azithromycin, roxithromycin and penicillin. CONCLUSIONS C. pneumoniae is frequently found in the advanced carotid atherosclerotic lesions of patients undergoing endarterectomy. Although these findings do not establish causality in carotid artery atherosclerosis, they should stimulate investigation of the possible causal or pathogenic role of C. pneumoniae. Notably, the profiles of antibiotic susceptibility of C. pneumoniae isolated from 4 of the patients did not differ from those of the reference strain.
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Affiliation(s)
- Cecilia Cuffini
- Instituto de Virología Dr. J.M. Vanella, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Argentina.
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Adamo P, Asís L, Silveyra P, Cuffini C, Pedranti M, Zapata M. Rubella virus does not induce apoptosis in primary human embryo fibroblast cultures: a possible way of viral persistence in congenital infection. Viral Immunol 2004; 17:87-100. [PMID: 15018665 DOI: 10.1089/088282404322875485] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Congenital rubella is a persistent infection that contrasts with acute postnatal infection. Basis of the Rubella virus (RV) persistence still remain unknown, though several hypotheses have been postulated. RV induces apoptosis in cell lines, maybe as a way of cell-autonomous defense mechanism against virus. Considering the pattern of c-oncogenes expression during embryogenesis, which promotes proliferation while it inhibits apoptosis in specific cells, at certain times, it can be proposed that when RV infection establishes early in gestation, embryo cells that are proliferating have their apoptotic pathways shut down; then infected proliferating embryo cells cannot execute their apoptotic death program. We here report that RV induces apoptosis in human normal-term placenta chorionic villi explants (CVE) and in monolayers of cytotrophoblasts (CTB), but does not induce apoptosis in primary human embryo fibroblasts (HEF) cultures. These results suggest distinct responses to RV infection when comparing differentiated cells, as CTB, to cells with high proliferating potential, as HEF. RV shoots apoptosis in the former, whereas in fibroblastic dividing cells derived from embryo, RV appears not to be enough stimulus to activate the genetic program of cell death.
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Affiliation(s)
- Pilar Adamo
- Laboratorio de Inmunologia, Instituto de Virologia JM Vanella, Facultad de Ciencias Medicas, Universidad Nacional de Cordoba, Cordoba, Argentina
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Adamo MP, León Monzón M, Cuffini C, Pedranti M, Zapata M. Detection of rubella-virus-induced apoptosis in Vero cell cultures with hematoxylin and eosin staining. Rev Argent Microbiol 2002; 34:177-85. [PMID: 12600000] [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: 03/01/2023] Open
Abstract
In order to facilitate the detection of apoptotic cells (Apo C) in Rubella virus (RV) infected cultures in settings of low resources, we compared hematoxylin and eosin staining (H&E) with the conventional TUNEL technique, and confirmed our findings with DNA electrophoresis and transmission electron microscopy. H&E allowed to distinguish Apo C from non-apoptotic cells. The proportion of Apo C in infected cultures was proportional to the multiplicity of infection (MOI). At a MOI of 10, the percent of Apo C at 3, 4 and 5 days post infection (pi) were 26, 45 and 47%, respectively, which were significantly reduced when the caspase inhibitor z-VAD-fmk was present in the supernatant. By the TUNEL assay, the percent of Apo C in RV-infected cultures were lower (0.8, 1.2 and 1.2% at 3, 4 and 5 days pi, respectively). Our results have shown that H&E staining is an easy, rapid, economic and reproducible method to detect Apo C in RV infected Vero cells cultures. It is possible that H&E makes evident early stages of apoptosis, when an apoptotic cell shows chromatin condensation, nuclear and cytoplasmic contraction (but is still attached to the monolayer), while TUNEL detects later stages of apoptosis because it needs an extensive DNA fragmentation, when apoptotic cells are about to or have already detached from the substratum.
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Affiliation(s)
- M P Adamo
- Laboratorio de Inmunología, Instituto de Virología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Agencia 4, Ciudad Universitaria, 5016 Córdoba, Argentina.
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Cuffini C, Becher S, Adamo P, Pedranti M, Zapata M. [Production and characterization of monoclonal antibodies directed agains the major outer membrane protein and lipopolysaccharide of Chlamydia trachomatis]. Rev Argent Microbiol 2001; 33:203-8. [PMID: 11833251] [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: 02/23/2023] Open
Abstract
Two monoclonal antibodies (MnAb) directed against the lipopolysaccharide (LPS) and major outer membrane protein (MOMP) of Chlamydia trachomatis were produced for use in indirect immunofluorescence (IFI). The specificity of the antibodies was determined by Dot-blot, Immunoblotting (IB) and IFI onto culture cells infected with C. trachomatis and IFI onto commercial swabs (MRL). The MnAb 2D3 and 3C2 detected LPS and MOMP of C. trachomatis, respectively, by different methods. Neither MnAb showed cross-reactions when other gram-negative bacteria were used as antigens.
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Affiliation(s)
- C Cuffini
- Laboratorio de Inmunología, Instituto de Virología, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Calle Enfermera Gordillo, Ciudad Universitaria, Agencia 4, 5000 Córdoba, Argentina.
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