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TNFα rs1799964 TT genotype may be a susceptibility factor for vertical transmission of Toxoplasma gondii and clinical signs in newborns from pregnant women with acute toxoplasmosis.
Bonifácio, Lillian Gonzalez; Melo, Mirele; Ayo, Christiane Maria; Assoni, Letícia Carolina Paraboli; Olímpio, Larissa Martins; Nogueira, Mariana Reis; Spegiorin, Lígia Cosentino Junqueira Franco; Barbosa, Deusenia Machado Ulisses; de Mattos, Luiz Carlos; Pereira-Chioccola, Vera Lucia; Brandão, Cinara Cássia.
Affiliation
  • Bonifácio LG; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Melo M; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Ayo CM; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Assoni LCP; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Olímpio LM; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Nogueira MR; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Spegiorin LCJF; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Barbosa DMU; High Risk Pregnancy Outpatient Clinic of Hospital de Base, Regional Medical Faculty Foundation of São José do Rio Preto (HB-FUNFARME), São José do Rio Preto, SP, Brazil.
  • de Mattos LC; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
  • Pereira-Chioccola VL; Pediatric Outpatient Clinic of Hospital de Base, Regional Medical Faculty Foundation of São José do Rio Preto (HB-FUNFARME), São José do Rio Preto, SP, Brazil.
  • Brandão CC; Laboratory of Immunogenetics, Department of Molecular Biology, Faculty of Medicine of São José do Rio Preto (FAMERP), Avenida Brigadeiro Faria Lima, 5416, São José do Rio Preto, SP, 15090-000, Brazil.
Mol Biol Rep ; 49(6): 4759-4768, 2022 Jun.
Article in En | MEDLINE | ID: mdl-35332413
ABSTRACT

BACKGROUND:

One of the main impacts of Toxoplasma gondii infection occurs during pregnancy and is related to the vertical transmission of the parasite (congenital toxoplasmosis), which can cause severe clinical outcomes and fetal death. During acute infection, in order to control the rapid replication of tachyzoites, different host immune response genes are activated, and these include cytokine-encoding genes. Considering that polymorphisms in cytokine genes may increase susceptibility to vertical transmission of T. gondii by determining the immune status of the pregnant woman, this study evaluated the influence of polymorphisms of tumor necrosis factor alpha (TNFα) rs1799964 (- 1031) and interleukin 1 beta (IL1ß) rs16944 (- 511) genes on gestational toxoplasmosis and on the vertical transmission of the parasite and verified the allele and genotype frequency of these polymorphisms in pregnant patients whose respective newborn did or did not present clinical abnormalities suggestive of congenital toxoplasmosis. METHODS AND

RESULTS:

A total of 204 pregnant patients with (n = 114) or without (n = 90) infection by T. gondii were enrolled. No associations were found involving the polymorphisms rs1799964 (- 1031) of the TNFα gene and rs16944 (- 511) of the IL1ß gene with the increased chance of T. gondii infection during pregnancy. However, it was observed that the maternal TT genotype referring to the polymorphism of the TNFα gene seems to influence the vertical transmission of the parasite (P = 0.01; χ2 = 6.05) and the presence of clinical manifestation in newborns from pregnancies with acute toxoplasmosis (P = 0.007; χ2 = 9.68).

CONCLUSION:

The TNFα rs1799964 TT genotype may act as a susceptibility factor for the vertical transmission of parasite and for the presence of clinical signs in newborns from pregnant women with acute toxoplasmosis.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Toxoplasma / Toxoplasmosis, Congenital / Tumor Necrosis Factor-alpha / Pregnancy Complications, Parasitic Type of study: Diagnostic_studies Limits: Female / Humans / Newborn / Pregnancy Language: En Journal: Mol Biol Rep Year: 2022 Document type: Article Affiliation country:
Fulltext
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Full text: 1 Collection: 01-internacional Database: MEDLINE Main subject: Toxoplasma / Toxoplasmosis, Congenital / Tumor Necrosis Factor-alpha / Pregnancy Complications, Parasitic Type of study: Diagnostic_studies Limits: Female / Humans / Newborn / Pregnancy Language: En Journal: Mol Biol Rep Year: 2022 Document type: Article Affiliation country: