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  1. Article ; Online: Prevalence of salivary anti-SARS-CoV-2 IgG antibodies in vaccinated children.

    Badano, María Noel / Duarte, Alejandra / Salamone, Gabriela / Sabbione, Florencia / Pereson, Matias / Chuit, Roberto / Baré, Patricia

    Immunology

    2023  Volume 169, Issue 3, Page(s) 384–387

    MeSH term(s) Humans ; Child ; Prevalence ; COVID-19/epidemiology ; Antibodies, Viral ; Vaccination
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2023-05-15
    Publishing country England
    Document type Letter
    ZDB-ID 80124-0
    ISSN 1365-2567 ; 0019-2805 ; 0953-4954
    ISSN (online) 1365-2567
    ISSN 0019-2805 ; 0953-4954
    DOI 10.1111/imm.13656
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: TNF-α Levels in Respiratory Samples Are Associated with SARS-CoV-2 Infection.

    Pereson, Matias J / Badano, Maria Noel / Aloisi, Natalia / Chuit, Roberto / E de Bracco, M M / Bare, Patricia

    Microbiology spectrum

    2022  Volume 10, Issue 1, Page(s) e0141121

    MeSH term(s) Adolescent ; Adult ; Aged ; Aged, 80 and over ; COVID-19/immunology ; Child ; Female ; Genome, Viral ; Humans ; Interleukin-6/analysis ; Male ; Middle Aged ; Respiratory System/chemistry ; Respiratory System/virology ; SARS-CoV-2/genetics ; SARS-CoV-2/immunology ; Tumor Necrosis Factor-alpha/analysis ; Young Adult
    Chemical Substances Interleukin-6 ; Tumor Necrosis Factor-alpha
    Language English
    Publishing date 2022-02-09
    Publishing country United States
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 2807133-5
    ISSN 2165-0497 ; 2165-0497
    ISSN (online) 2165-0497
    ISSN 2165-0497
    DOI 10.1128/spectrum.01411-21
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: SARS-CoV-2 Breakthrough Infections after Third Doses Boost IgG Specific Salivary and Blood Antibodies.

    Badano, María Noel / Pereson, Matias J / Sabbione, Florencia / Keitelman, Irene / Aloisi, Natalia / Chuit, Roberto / de Bracco, María M E / Fink, Susana / Baré, Patricia

    Vaccines

    2023  Volume 11, Issue 3

    Abstract: SARS-CoV-2 breakthrough infections, associated with waning immunity, increase systemic antibody levels. In this study, we analyzed the impact of the infection timing on the magnitude of the systemic humoral response and whether breakthrough infections ... ...

    Abstract SARS-CoV-2 breakthrough infections, associated with waning immunity, increase systemic antibody levels. In this study, we analyzed the impact of the infection timing on the magnitude of the systemic humoral response and whether breakthrough infections also boost antibody levels in the salivary compartment. We observed that the combination of infection plus vaccination, regardless of infection timing, produced a sharp increase in systemic antibodies, which were higher in subjects infected after third doses. Moreover, despite high systemic antibody levels, breakthrough infections after dose three occurred and boosted antibody levels in the salivary compartment. These results suggest that current vaccination strategies against COVID-19 should be improved. Results also showed that determination of salivary antibodies against SARS-CoV-2 could be a valuable tool in disease prevalence studies, for the follow-up of vaccinated individuals, and to assist vaccination strategies against COVID-19, especially in settings where blood sampling cannot be fulfilled.
    Language English
    Publishing date 2023-02-24
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2703319-3
    ISSN 2076-393X
    ISSN 2076-393X
    DOI 10.3390/vaccines11030534
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Agenda Nacional de Investigación en Salud Publica

    Traverso Vior, Natacha / Chuit , Roberto / Mejía, Raúl

    Revista Argentina de Salud Pública, Vol 10, Iss 41, Pp 58-

    2019  Volume 61

    Abstract: El 2 de diciembre de 2019 se presentó la Agenda Nacional de Investigación en Salud Pública en el Ministerio de Salud de Argentina. El establecimiento de prioridades en una Agenda Nacional de Investigación en Salud Pública es un proceso sistemático, ... ...

    Abstract El 2 de diciembre de 2019 se presentó la Agenda Nacional de Investigación en Salud Pública en el Ministerio de Salud de Argentina. El establecimiento de prioridades en una Agenda Nacional de Investigación en Salud Pública es un proceso sistemático, participativo y reflexivo, que permite guiar la investigación hacia problemas relevantes, prevalentes y emergentes de la población, orientar los recursos hacia los temas priorizados, fortalecer y/o crear grupos, centros y redes de investigación para la salud pública, mejorar las capacidades para el desarrollo de investigación de calidad e incrementar la evidencia local para la toma de decisiones a fin de mejorar la salud de la población y los sistemas sanitarios en el marco de los Objetivos de Desarrollo Sustentable 2030. Como metodología para la elaboración de la Agenda se eligió el Método Delphi modificado por la Organización Panamericana de la Salud (OPS). En la elaboración de esta herramienta participaron la Dirección de Investigación para la Salud (DIS) del Ministerio de Salud de la Nación, a través de la Red Ministerial de Investigación en Salud (REMINSA), y la OPS. A lo largo de todo el proceso se consideró imprescindible lograr una amplia participación de actores de los niveles provinciales y nacionales, y de los sectores público y privado. La presencia de una Agenda Nacional de Investigación en Salud Pública permitirá generar investigación científica nacional y regional, e implementar políticas y recomendaciones que impacten en la salud de las poblaciones
    Keywords Medicine (General) ; R5-920 ; Public aspects of medicine ; RA1-1270
    Language Spanish
    Publishing date 2019-12-01T00:00:00Z
    Publisher Ministerio de Salud
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Characteristics of the treatment received by children with cleft lip and palate in Argentina.

    Cipolla, María C / Piola, Agustina / Barbero, Pablo / Groisman, Boris / Bidondo, María P / Chuit, Roberto / Liascovich, Rosa

    Andes pediatrica : revista Chilena de pediatria

    2021  Volume 92, Issue 1, Page(s) 67–78

    Abstract: Introduction: Cleft lip and palate (CLP) are congenital abnormalities that affect anatomically and functionally the face and mouth, involving lip (CL), palate (CP), or both (CL/CP).: Objective: to characterize the treatment of children with CLP in ... ...

    Title translation Características del tratamiento recibido por los niños con fisura labio alvéolo palatina en Argentina.
    Abstract Introduction: Cleft lip and palate (CLP) are congenital abnormalities that affect anatomically and functionally the face and mouth, involving lip (CL), palate (CP), or both (CL/CP).
    Objective: to characterize the treatment of children with CLP in public institutions in Argentina.
    Patients and method: Cross sectional study in a random sample of 100 children from the Flap Network. We included children with isolated CL, CP, and CL/CP, of both sexes, with birth weight of 2500 grams or more and ges tational age over 36 weeks. The following data were recorded date of birth, hospital of birth, birth weight, gestational age, sex, specific diagnosis of the cleft, and initial surgery data. A telephone survey was conducted with the children's parents. To characterize the treatment, three indicators were cons tructed: interdisciplinary, opportunity, and integrality. These indicators were composed of different variables, and according to the sum of the score attributed to each one, the treatment was categorized as high, medium or low based on the treatment guidelines used by the Sumar Program.
    Results: 30% of the patients started early treatment, 58% underwent timely surgery, and 29% of the children were in follow-up with basic specialties. The mother's high educational level was associated with higher probability of having interdisciplinary (OR2.9; 95%CI 1.3-6.8), comprehensive (OR3.7; 95%CI 1.6 8.7), and timely treatment (OR2.9; 95%CI 1.3-6.7).
    Conclusions: There are barriers to accessing care, such as long distances or shift management. Less social vulnerability of families was associated with greater likelihood of receiving treatment close to standards.
    MeSH term(s) Argentina ; Birth Weight ; Child, Preschool ; Cleft Lip/surgery ; Cleft Palate/surgery ; Cross-Sectional Studies ; Educational Status ; Female ; Gestational Age ; Health Services Accessibility ; Humans ; Infant ; Male ; Mothers/education
    Language Spanish
    Publishing date 2021-02-24
    Publishing country Chile
    Document type Journal Article ; Multicenter Study ; Observational Study
    ISSN 2452-6053
    ISSN (online) 2452-6053
    DOI 10.32641/andespediatr.v92i1.2871
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: TNF-α levels in respiratory samples are associated with SARS-CoV-2 infection.

    Pereson, Matias Javier / Badano, Maria Noel / Aloisi, Natalia / Chuit, Roberto / Braco, Maria Marta / Bare, Patricia

    bioRxiv

    Abstract: Purpose: Increased serum levels of IL-6 and TNF-alpha have been proposed as biomarkers for COVID-19 progression. However, the role and the implication of these cytokines in SARS-CoV-2 infection remain controversial. The aim of this study was to measure ... ...

    Abstract Purpose: Increased serum levels of IL-6 and TNF-alpha have been proposed as biomarkers for COVID-19 progression. However, the role and the implication of these cytokines in SARS-CoV-2 infection remain controversial. The aim of this study was to measure levels of IL-6 and TNF-alpha in swab samples from individuals with symptoms compatible with COVID-19 and analyze their association with SARS-CoV-2 presence. Methods: SARS-CoV-2 detection was performed using the CDC (USA) real-time RT-PCR primers, probes and protocols. Cytokine concentrations were measured using commercial reagents based on enzyme linked immunosorbent assay (ELISA). Results: TNF-alpha median levels were greater in COVID19 (+) symptomatic group (5.88 (1.36 - 172.1) pg/ml) compared to COVID19 (-) symptomatic individuals (2.87 (1.45 - 69.9) pg/ml) (p=0.0003). No significant differences were shown in IL-6 median values between COVID-19 (+) and (-) symptomatic patients (5.40 (1.7 - 467) pg/ml and 6.07 (1.57 - 466.6) pg/ml respectively). In addition, increased TNF-alpha; levels (greater than 10 pg/ml), but not IL-6, were associated with SARS-CoV-2 presence (OR= 5.7; p=0.006; 95% CI= 1,551 to 19,11). Conclusions: IL-6 concentration showed high levels in swabs from some symptomatic patients, suggesting the presence of immune response at viral entry site. However, IL-6 levels were independent from SARS-CoV-2 presence and viral load, individual9s age and gender. On the contrary, TNF-alpha evaluation confirmed the presence of inflammatory response but mostly related to COVID-19. More studies are required in order to characterize the cytokine profile expressed at the site of infection of SARS-CoV-2 and its implications in disease outcomes.
    Keywords covid19
    Language English
    Publishing date 2021-07-13
    Publisher Cold Spring Harbor Laboratory
    Document type Article ; Online
    DOI 10.1101/2021.07.12.452071
    Database COVID19

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  7. Article ; Online: Prevalence of salivary anti-SARS-CoV-2 IgG antibodies in vaccinated children

    Badano, Maria Noel / Duarte, Alejandra / Salamone, Gabriela / Sabbione, Florencia / Pereson, Matias Javier / Chuit, Roberto / Bare, Patricia

    medRxiv

    Abstract: Vaccination against COVID-19 has mitigated the impact of SARS-CoV-2 infection, decreasing the probability of progression to severe disease and death in vaccinated people. Parallel to the development and administration of COVID-19 vaccines, the immune ... ...

    Abstract Vaccination against COVID-19 has mitigated the impact of SARS-CoV-2 infection, decreasing the probability of progression to severe disease and death in vaccinated people. Parallel to the development and administration of COVID-19 vaccines, the immune response induced by the different vaccine platforms has been investigated, mainly, in the adult population. However, since the approval of the vaccines for use in pediatric individuals was a posteriori, vaccination began later in this population. This, added to the difficulty in obtaining blood samples from pediatric individuals, has led to less knowledge about the humoral immune response following vaccination in children. In this work, we analyzed the humoral response induced by vaccination in children through a non-invasive approach such as the measurement of specific salivary antibodies. Our results showed a high prevalence of specific salivary antibodies (81%), with the highest levels of antibodies being observed in those children who had three doses, a greater number of exposures and a shorter interval time between the last exposure to SARS-CoV-2 antigens and saliva collection. These results agree with those reported for the systemic humoral immune response in vaccinated adults, suggesting the administration of booster doses in children to maintain high antibody levels. Therefore, determination of salivary antibodies against SARS-CoV-2 could be a non-invasive tool for disease surveillance, vaccination follow-up and to assist vaccination strategies against COVID-19.
    Keywords covid19
    Language English
    Publishing date 2022-12-16
    Publisher Cold Spring Harbor Laboratory Press
    Document type Article ; Online
    DOI 10.1101/2022.12.15.22283480
    Database COVID19

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  8. Article: A multidisciplinary, collaborative, inter-agency and comprehensive approach for the control of Chagas Disease as a public health problem in Guatemala

    Monroy, María Carlota / Penados, Daniel / Pineda, José / Ruiz, Elisa Laparra / Agreda, Emmanuel O. / Alcantara, Belter / Rodas, Antonieta / Lange, Karla / Weinberg, Diego / Bazzani, Roberto / Marchiol, Andrea / Herazo, Rafael / Agrelo, Roberto Salvatella / Abril, Marcelo / Chuit, Roberto

    Acta tropica. 2022 Jan., v. 225

    2022  

    Abstract: The Pan American Health Organization (PAHO) has defined Chagas Disease hotspots in Central America associated with the vector Triatoma spp. Triatoma dimidiata is a native vector adapted to multiple environments, including intra-domestic and peri-domestic ...

    Abstract The Pan American Health Organization (PAHO) has defined Chagas Disease hotspots in Central America associated with the vector Triatoma spp. Triatoma dimidiata is a native vector adapted to multiple environments, including intra-domestic and peri-domestic habitats. A multi-institutional project named “Alliances for the elimination of Chagas in Central America” was created to help reduce the incidence of the disease in the region. Activities performed in the field as part of the project included aspects of vector surveillance and control, improvement of houses, diagnosis and treatment of individuals, health promotion, training of human resources and identification of access barriers to diagnosis and treatment. As a base line study, eleven villages, comprised of 1,572 households, were entomologically evaluated (83.4% overall participation); five were found to have very high infestation rates (>20%), three had high infestation rates (8-20%) and three had low-infestation rates (<8%), coinciding with the category of infestation-risk of the houses within each village. Serological tests were carried out in 812 people (>80% participation) in two of the 11 villages and none of the 128 children tested, less than 5 years of age, were positive for Trypanosoma cruzi infection. Community participation in all the activities was high (>70%). The collaboration between several subnational, national, and international institutions, each with specific roles, promoted community participation in the activities of vector control and patient care, thus, establishing a baseline to continue implementing and monitoring project progress.
    Keywords Chagas disease ; Triatoma dimidiata ; Trypanosoma cruzi ; community service ; health promotion ; humans ; monitoring ; patient care ; people ; vector control ; villages ; Guatemala
    Language English
    Dates of publication 2022-01
    Publishing place Elsevier B.V.
    Document type Article
    ZDB-ID 210415-5
    ISSN 1873-6254 ; 0001-706X
    ISSN (online) 1873-6254
    ISSN 0001-706X
    DOI 10.1016/j.actatropica.2021.106157
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Humoral response to the BBIBP-CorV vaccine over time in healthcare workers with or without exposure to SARS-CoV-2

    Badano, María Noel / Sabbione, Florencia / Keitelman, Irene / Pereson, Matias / Aloisi, Natalia / Colado, Ana / Ramos, María Victoria / Ortiz Wilczyñski, Juan Manuel / Pozner, Roberto Gabriel / Castillo, Luis / Wigdorovitz, Georgina / E.de Bracco, María Marta / Fink, Susana / Chuit, Roberto / Baré, Patricia

    Molecular immunology. 2022 Mar., v. 143

    2022  

    Abstract: SARS-CoV-2-specific humoral response was analyzed over time in a group of healthcare workers with or without exposure to SARS-CoV-2, who underwent vaccination with BBIBP-CorV (Sinopharm) vaccine in Argentina. Seroconversion rates in unexposed subjects ... ...

    Abstract SARS-CoV-2-specific humoral response was analyzed over time in a group of healthcare workers with or without exposure to SARS-CoV-2, who underwent vaccination with BBIBP-CorV (Sinopharm) vaccine in Argentina. Seroconversion rates in unexposed subjects after the first and second doses were 40 % and 100 %, respectively, showing a significant increase in antibody concentrations from dose 1 to dose 2 (p < 0.0001). The highest antibody concentrations were found in younger subjects and women, remaining significantly associated in a multivariable linear regression model (p = 0.005). A single dose of the BBIBP-CorV vaccine induced a strong antibody response in individuals with prior SARS-CoV-2infection, while a second dose did not increase this response. A sharp increase in antibody concentrations was observed following SARS-CoV-2 infection in those participants who became infected after the first and second doses (p = 0.008). Individuals with SARS-CoV-2 exposure prior to vaccination showed significantly higher anti-spike IgG antibody levels, at all-time points, than those not exposed (p < 0.001). Higher antibody titers were induced by a single dose in previously SARS-CoV-2 infected individuals than those induced in naïve subjects by two doses of the vaccine (p < 0.0001). Three months after the second dose both groups showed a decline in antibody levels, being more abrupt in unexposed subjects. Overall, our results showed a trend towards lower antibody concentrations over time following BBIBP-CorV vaccination. Sex and age seem to influence the magnitude of the humoral response in unexposed subjects while the combination of exposure to SARS-CoV-2 plus vaccination, whatever the sequence of the events was, produced a sharp increase in antibody levels. Evaluation of the humoral responses over time and the analysis of the induction and persistence of memory B and T cell responses, are needed to assess long-term immune protection induced by BBIBP-CorV vaccine.
    Keywords Severe acute respiratory syndrome coronavirus 2 ; T-lymphocytes ; antibodies ; antibody formation ; health services ; humoral immunity ; memory ; regression analysis ; seroconversion ; vaccination ; vaccines ; Argentina
    Language English
    Dates of publication 2022-03
    Size p. 94-99.
    Publishing place Elsevier Ltd
    Document type Article
    ZDB-ID 424427-8
    ISSN 1872-9142 ; 0161-5890
    ISSN (online) 1872-9142
    ISSN 0161-5890
    DOI 10.1016/j.molimm.2022.01.009
    Database NAL-Catalogue (AGRICOLA)

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  10. Article ; Online: Humoral response to the BBIBP-CorV vaccine over time in healthcare workers with or without exposure to SARS-CoV-2.

    Badano, María Noel / Sabbione, Florencia / Keitelman, Irene / Pereson, Matias / Aloisi, Natalia / Colado, Ana / Ramos, María Victoria / Ortiz Wilczyñski, Juan Manuel / Pozner, Roberto Gabriel / Castillo, Luis / Wigdorovitz, Georgina / E de Bracco, María Marta / Fink, Susana / Chuit, Roberto / Baré, Patricia

    Molecular immunology

    2022  Volume 143, Page(s) 94–99

    Abstract: SARS-CoV-2-specific humoral response was analyzed over time in a group of healthcare workers with or without exposure to SARS-CoV-2, who underwent vaccination with BBIBP-CorV (Sinopharm) vaccine in Argentina. Seroconversion rates in unexposed subjects ... ...

    Abstract SARS-CoV-2-specific humoral response was analyzed over time in a group of healthcare workers with or without exposure to SARS-CoV-2, who underwent vaccination with BBIBP-CorV (Sinopharm) vaccine in Argentina. Seroconversion rates in unexposed subjects after the first and second doses were 40 % and 100 %, respectively, showing a significant increase in antibody concentrations from dose 1 to dose 2 (p < 0.0001). The highest antibody concentrations were found in younger subjects and women, remaining significantly associated in a multivariable linear regression model (p = 0.005). A single dose of the BBIBP-CorV vaccine induced a strong antibody response in individuals with prior SARS-CoV-2infection, while a second dose did not increase this response. A sharp increase in antibody concentrations was observed following SARS-CoV-2 infection in those participants who became infected after the first and second doses (p = 0.008). Individuals with SARS-CoV-2 exposure prior to vaccination showed significantly higher anti-spike IgG antibody levels, at all-time points, than those not exposed (p < 0.001). Higher antibody titers were induced by a single dose in previously SARS-CoV-2 infected individuals than those induced in naïve subjects by two doses of the vaccine (p < 0.0001). Three months after the second dose both groups showed a decline in antibody levels, being more abrupt in unexposed subjects. Overall, our results showed a trend towards lower antibody concentrations over time following BBIBP-CorV vaccination. Sex and age seem to influence the magnitude of the humoral response in unexposed subjects while the combination of exposure to SARS-CoV-2 plus vaccination, whatever the sequence of the events was, produced a sharp increase in antibody levels. Evaluation of the humoral responses over time and the analysis of the induction and persistence of memory B and T cell responses, are needed to assess long-term immune protection induced by BBIBP-CorV vaccine.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Antibodies, Viral/immunology ; B-Lymphocytes/immunology ; COVID-19/epidemiology ; COVID-19/immunology ; COVID-19/prevention & control ; COVID-19 Vaccines/administration & dosage ; Female ; Health Personnel ; Humans ; Male ; Middle Aged ; SARS-CoV-2/immunology ; T-Lymphocytes/immunology ; Vaccination ; Vaccines, Inactivated/administration & dosage
    Chemical Substances Antibodies, Viral ; COVID-19 Vaccines ; SARS-CoV-2 inactivated vaccines ; Vaccines, Inactivated
    Language English
    Publishing date 2022-01-17
    Publishing country England
    Document type Clinical Trial ; Journal Article ; Observational Study ; Research Support, Non-U.S. Gov't
    ZDB-ID 424427-8
    ISSN 1872-9142 ; 0161-5890
    ISSN (online) 1872-9142
    ISSN 0161-5890
    DOI 10.1016/j.molimm.2022.01.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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