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  1. Article ; Online: Maternal anti-Toxoplasma gondii antibodies IgG2, IgG3 and IgG1 are markers of vertical transmission and clinical evolution of toxoplasmosis in the offspring

    Cañedo-Solares, Irma / Correa, Dolores / Luna-Pastén, Hector / Ortiz-Alegría, Luz Belinda / Gómez-Chávez, Fernando / Xicoténcatl-García, Lizbeth / Díaz-García, Luisa / Canfield-Rivera, Carlos E.

    Acta Tropica. 2023 July, v. 243 p.106943-

    2023  

    Abstract: Toxoplasma gondii can be transmitted vertically during pregnancy and may cause neurological, ocular, and even systemic damage to the offspring. Congenital toxoplasmosis (CT) can be diagnosed during gestation and/or after birth in the postnatal period. ... ...

    Abstract Toxoplasma gondii can be transmitted vertically during pregnancy and may cause neurological, ocular, and even systemic damage to the offspring. Congenital toxoplasmosis (CT) can be diagnosed during gestation and/or after birth in the postnatal period. The timely diagnosis is highly relevant for efficient clinical management. The most common laboratory methods for diagnosing CT are based on Toxoplasma-specific humoral immune responses. However, these methods are of low sensitivity or specificity. In a previous study with a small number of cases, the comparison of anti-T. gondii IgG subclasses between mothers and their offspring showed promising results for CT diagnosis and prognosis. Thus, in this work, we analyzed specific IgG subclasses and IgA in 40 T. gondii-infected mothers and their children, of which 27 were congenitally infected and 13 uninfected. A higher frequency of anti-Toxoplasma IgG2, IgG3, IgG4, and IgA antibodies was observed in mothers and congenitally infected offspring. Of these, IgG2 or IgG3 were statistically the most conspicuous. In the CT group, maternal IgG3 antibodies were significantly associated with severe disease of the infants and IgG1 and IgG3 with disseminated disease. The results support that maternal anti-T. gondii IgG3, IgG2 and IgG1 are markers of congenital transmission and severity/spread of disease in the offspring.
    Keywords Toxoplasma gondii ; disease course ; disease severity ; disease transmission ; immunoglobulin G ; postpartum period ; pregnancy ; progeny ; prognosis ; toxoplasmosis ; Congenital toxoplasmosis ; Laboratory diagnosis ; Maternal IgG subclasses ; Vertical transmission ; Disease outcome
    Language English
    Dates of publication 2023-07
    Publishing place Elsevier B.V.
    Document type Article ; Online
    ZDB-ID 210415-5
    ISSN 1873-6254 ; 0001-706X
    ISSN (online) 1873-6254
    ISSN 0001-706X
    DOI 10.1016/j.actatropica.2023.106943
    Database NAL-Catalogue (AGRICOLA)

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  2. Article ; Online: Maternal anti-Toxoplasma gondii antibodies IgG2, IgG3 and IgG1 are markers of vertical transmission and clinical evolution of toxoplasmosis in the offspring.

    Cañedo-Solares, Irma / Correa, Dolores / Luna-Pastén, Hector / Ortiz-Alegría, Luz Belinda / Gómez-Chávez, Fernando / Xicoténcatl-García, Lizbeth / Díaz-García, Luisa / Canfield-Rivera, Carlos E

    Acta tropica

    2023  Volume 243, Page(s) 106943

    Abstract: Toxoplasma gondii can be transmitted vertically during pregnancy and may cause neurological, ocular, and even systemic damage to the offspring. Congenital toxoplasmosis (CT) can be diagnosed during gestation and/or after birth in the postnatal period. ... ...

    Abstract Toxoplasma gondii can be transmitted vertically during pregnancy and may cause neurological, ocular, and even systemic damage to the offspring. Congenital toxoplasmosis (CT) can be diagnosed during gestation and/or after birth in the postnatal period. The timely diagnosis is highly relevant for efficient clinical management. The most common laboratory methods for diagnosing CT are based on Toxoplasma-specific humoral immune responses. However, these methods are of low sensitivity or specificity. In a previous study with a small number of cases, the comparison of anti-T. gondii IgG subclasses between mothers and their offspring showed promising results for CT diagnosis and prognosis. Thus, in this work, we analyzed specific IgG subclasses and IgA in 40 T. gondii-infected mothers and their children, of which 27 were congenitally infected and 13 uninfected. A higher frequency of anti-Toxoplasma IgG2, IgG3, IgG4, and IgA antibodies was observed in mothers and congenitally infected offspring. Of these, IgG2 or IgG3 were statistically the most conspicuous. In the CT group, maternal IgG3 antibodies were significantly associated with severe disease of the infants and IgG1 and IgG3 with disseminated disease. The results support that maternal anti-T. gondii IgG3, IgG2 and IgG1 are markers of congenital transmission and severity/spread of disease in the offspring.
    MeSH term(s) Infant ; Female ; Child ; Pregnancy ; Humans ; Toxoplasma ; Immunoglobulin G ; Toxoplasmosis/diagnosis ; Toxoplasmosis, Congenital/diagnosis ; Immunoglobulin A ; Antibodies, Protozoan
    Chemical Substances Immunoglobulin G ; Immunoglobulin A ; Antibodies, Protozoan
    Language English
    Publishing date 2023-05-10
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 210415-5
    ISSN 1873-6254 ; 0001-706X
    ISSN (online) 1873-6254
    ISSN 0001-706X
    DOI 10.1016/j.actatropica.2023.106943
    Database MEDical Literature Analysis and Retrieval System OnLINE

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