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Martínez-Barnetche J, Carnalla M, Gaspar-Castillo C, Basto-Abreu A, Lizardi R, Antonio RA, Martinez IL, Escamilla AC, Ramirez OT, Palomares LA, Barreto-Cabrera D, Rivera-Castro JC, Segura-Sánchez C, Ávila MH, Barrientos-Gutiérrez T, Aranda CMA. Comparable diagnostic accuracy of SARS-CoV-2 Spike RBD and N-specific IgG tests to determine pre-vaccination nation-wide baseline seroprevalence in Mexico. Sci Rep 2022; 12:18014. [PMID: 36289305 PMCID: PMC9606250 DOI: 10.1038/s41598-022-22146-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 10/07/2022] [Indexed: 01/24/2023] Open
Abstract
A major challenge for developing countries during the COVID-19 pandemic is affordable and adequate monitoring of disease progression and population exposure as the primary source relevant epidemiological indicators. Serology testing enables assessing population exposure and to guide vaccination strategies but requires rigorous accuracy validation before population-wide implementation. We adapted a two-step ELISA protocol as a single-step protocol for detection of IgG against the Receptor Binding Domain (RBD) of SARS-CoV-2 spike protein and compared its diagnostic accuracy with a commercial immunoassay anti-nucleoprotein IgG. Both methods yielded adequate and comparable diagnostic accuracy after 3 weeks post-symptom onset and were implemented in a nation-wide population based serological survey during August-November 2020. Anti-RBD National seroprevalence was 23.6%, 1.3% lower, but not significantly, than for anti-N. Double positive seroprevalence was 19.7%. Anti-N single-positive seroprevalence was 3.72% and anti-RBD single-positive seroprevalence was 1.98%. Discrepancies in the positivity to either single marker may be due to different kinetics of each antibody marker as well as the heterogeneity of the sampling time in regards to local epidemic waves. Baseline single positivity prevalence will be useful to assess the serological impact of vaccination and natural infection in further serosurveillance efforts.
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Affiliation(s)
- Jesús Martínez-Barnetche
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico.
| | - Martha Carnalla
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Carlos Gaspar-Castillo
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
| | - Ana Basto-Abreu
- Centro de Investigación en Salud Poblacional, Instituto Nacional de Salud Pública, Cuernavaca, Mexico
| | - Ricardo Lizardi
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
| | | | - Irma López Martinez
- Instituto de Diagnóstico y Referencia Epidemiológicos, Secretaria de Salud, Mexico City, Mexico
| | - Anais Cortes Escamilla
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
| | - Octavio T Ramirez
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Laura A Palomares
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | - Daniel Barreto-Cabrera
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
| | | | - Carlos Segura-Sánchez
- Dirección General de Prestaciones Médicas, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | - Mauricio Hernández Ávila
- Dirección General de Prestaciones Médicas, Instituto Mexicano del Seguro Social, Mexico City, Mexico
| | | | - Celia M Alpuche Aranda
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
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Cruz Hernández SIDL, Puerta-Guardo HN, Flores Aguilar H, González Mateos S, López Martinez I, Ortiz-Navarrete V, Ludert JE, Angel RMD. Primary dengue virus infections induce differential cytokine production in Mexican patients. Mem Inst Oswaldo Cruz 2016; 111:161-7. [PMID: 27008374 PMCID: PMC4804498 DOI: 10.1590/0074-02760150359] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 02/12/2016] [Indexed: 12/17/2022] Open
Abstract
Severe dengue pathogenesis is not fully understood, but high levels of
proinflammatory cytokines have been associated with dengue disease severity. In this
study, the cytokine levels in 171 sera from Mexican patients with primary dengue
fever (DF) and dengue haemorrhagic fever (DHF) from dengue virus (DENV) 1 (n = 116)
or 2 (n = 55) were compared. DF and DHF were defined according to the patient’s
clinical condition, the primary infections as indicated by IgG enzymatic immunoassay
negative results, and the infecting serotype as assessed by real-time reverse
transcription-polymerase chain reaction. Samples were analysed for circulating levels
of interleukin (IL)-12p70, interferon (IFN)-γ, tumour necrosis factor (TNF)-α, IL-6,
and IL-8 using a commercial cytometric bead array. Significantly higher IFN-γ levels
were found in patients with DHF than those with DF. However, significantly higher
IL-12p70, TNF-α, and IL-6 levels were associated with DHF only in patients who were
infected with DENV2 but not with DENV1. Moreover, patients with DF who were infected
with DENV1 showed higher levels of IL-12p70, TNF-α, and IL-6 than patients with DHF
early after-fever onset. The IL-8 levels were similar in all cases regardless of the
clinical condition or infection serotype. These results suggest that the association
between high proinflammatory cytokine levels and dengue disease severity does not
always stand, and it once again highlights the complex nature of DHF
pathogenesis.
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Affiliation(s)
| | - Henry Nelson Puerta-Guardo
- Departamento de Infectómica y Patogénesis Molecular, Instituto Politécnico Nacional, Centro de Investigación y Estudios Avanzados, México, DF, México
| | - Hilario Flores Aguilar
- Departamento de Inmunología e Inmunogenética, Instituto de Diagnóstico y Referencia Epidemiológicos, México, DF, México
| | - Silvia González Mateos
- Departamento de Virología, Instituto de Diagnóstico y Referencia Epidemiológicos, México, DF, México
| | - Irma López Martinez
- Departamento de Virología, Instituto de Diagnóstico y Referencia Epidemiológicos, México, DF, México
| | - Vianney Ortiz-Navarrete
- Departamento de Biomedicina, Instituto Politécnico Nacional, Centro de Investigación y de Estudios Avanzados, México, DF, México
| | - Juan E Ludert
- Departamento de Infectómica y Patogénesis Molecular, Instituto Politécnico Nacional, Centro de Investigación y Estudios Avanzados, México, DF, México
| | - Rosa María del Angel
- Departamento de Infectómica y Patogénesis Molecular, Instituto Politécnico Nacional, Centro de Investigación y Estudios Avanzados, México, DF, México
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de la Cruz Hernández SI, González Mateos S, Flores Aguilar H, López Martinez I, Alpuche Aranda C, Ludert JE, Del Angel RM. Evaluation of a novel commercial rapid test for dengue diagnosis based on specific IgA detection. Diagn Microbiol Infect Dis 2012; 72:150-5. [PMID: 22248735 DOI: 10.1016/j.diagmicrobio.2011.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 10/31/2011] [Accepted: 11/08/2011] [Indexed: 01/31/2023]
Abstract
The performance of the novel commercial test ASSURE® Dengue IgA Rapid test (MP Diagnostics) was evaluated using a panel of 172 sera collected from dengue patients and 47 sera from healthy blood donors. The overall specificity and sensitivity were 61.0% and 85.1%, respectively. However, the positivity rate for IgA went from 33.3% for sera collected the same day of fever onset to 81.2% for sera collected 5 days after fever onset. Infections with serotype 2 viruses were detected more efficiently than those with serotype 1 viruses, and no sera from infections with serotypes 3 and 4 were available. In addition, the kit was twice more efficient at detecting secondary infections than at detecting primary infections. Finally, the ASSURE® test showed good repeatability and reproducibility. The results of this study suggest that the ASSURE® Dengue IgA Rapid test may become a useful and easy-to-use test for early dengue diagnosis.
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Affiliation(s)
- Sergio Isaac de la Cruz Hernández
- Departamento de Virología, Centro de Investigación y Estudios Avanzados del Instituto Politécnico Nacional (CINVESTAV-IPN), Mexico D.F., Mexico
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Martinez IL, Salas M. [Causes of postpartum intrauterine device rejection]. Ginecol Obstet Mex 1996; 64:43-6. [PMID: 8948924] [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: 02/03/2023]
Abstract
The objective of this study was to determine the causes of rejection to intrauterine device postpartum (IDP) in puerperal patients before they left the hospital. Two hundred puerperal patients who accepted IDP and two hundred patients who rejected IDP were studied. They received a questionaire to know the motives to accept or not IDP and degree of knowledge about it. There was not statistical differences between groups in relation to age, scholarity, religion, marital status, occupation and degree of knowledge, 51% had prenatal control, 62% of puerperal patients who rejected IDP did not have information about this contraceptive method, in 17% husband did not accept it and 9.5% have been influenced by negative rumors about IDP. In conclusion puerperal patients reject IDP mainly for lack of knowledge in relation to IDP and because their husbands did not accept it.
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Affiliation(s)
- I L Martinez
- Instituto Mexicano del Seguro Social, Hospital General de Zonacon Unidad de Medicina Familiar 32, México
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Baca OG, Akporiaye ET, Aragon AS, Martinez IL, Robles MV, Warner NL. Fate of phase I and phase II Coxiella burnetii in several macrophage-like tumor cell lines. Infect Immun 1981; 33:258-66. [PMID: 7263063 PMCID: PMC350684 DOI: 10.1128/iai.33.1.258-266.1981] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Several macrophage-like tumor cell lines of murine origin were exposed to phase I and phase II Coxiella burnetii, and the subsequent fate of the parasites was determined by electron and bright-field microscopy. Phase I C. burnetii proliferated within and established a persistent infection of P388D1, J774, and PU-5-IR cell lines but not of WEHI-3 and WEHI-274 cell lines. Phase II C. burnetii, however, entered into and persistently infected all five cell lines. The parasites proliferated within vacuoles. Macrophage cell lines persistently infected with phase I and phase II C. burnetii were maintained for over 200 and 100 days, respectively. Within P388D1 cells, the phase I C. burnetii converted, in part, to phase II; phase II organisms remained in the phase II state. The differential fate of the two rickettsial phases after exposure to the WEHI-3 and WEHI-274 cells may be attributable to surface differences such as lipopolysaccharide content.
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