Problem: Trypanosoma cruzi and Toxoplasma gondii present, respectively, low and high congenital transmission rates. The placenta as an immune regulatory organ expresses TLRs, leading to the secretion of cytokines. Both parasites are recognized by TLR-2, TLR-4, and TLR-9. Here, we studied if the parasites induce differences in TLR protein expression, cytokine profiles, and whether receptor inhibition is related to parasite infection.
Method Of Study: Placental tissue explants were infected ex vivo with each parasite, TLRs protein expression, cytokine profile and parasite infection were determined by Western blotting, ELISA and qPCR.
Results: Trypanosoma cruzi and Toxoplasma gondii infection is related to TLR-2 and TLR-4/TLR-9, respectively. Trypanosoma cruzi elicits an increase in TNF-α, IL-1β, IL-6, IL-8 and IL-10 cytokine secretion whereas T. gondii only increases the secretion of IL-8.
Conclusion: The susceptibility of the placenta to each parasite is mediated partially by the innate immune response.
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http://dx.doi.org/10.1111/aji.12660 | DOI Listing |
Heliyon
December 2024
Microbiology Department, Clinical Laboratory North Metropolitan Area, Germans Trias I Pujol University Hospital, 08916 Badalona, Spain.
Background And Objective: Serological screening for Chagas disease (CD) in Latin American adults living in Europe is a cost-effective strategy for transmission prevention. The World Health Organization recommends two different serological tests including native and recombinant antigens for IgG detection. In Spain, most commercialized native tests require manual processing.
View Article and Find Full Text PDFChem Biodivers
December 2024
Universidad Nacional de Colombia, Antioquia, carrera 65 59a-110, 3840, Medellín, COLOMBIA.
Coumarin-chalcone hybrids are promising compounds that could be used as lead structures in the fight against parasitic diseases. In this work, sixteen hybrids of coumarin-chalcone (3-cinnamoyl-2H-chromen-2-ones) were synthesized, and their in vitro biological activity was evaluated against intracellular amastigotes of Leishmania braziliensis and Trypanosoma cruzi; as well as their cytotoxicity in the U-937 cell line. Compounds (E)-3-(3-(3-ethoxy-4-hydroxyphenyl)acryloyl)-7-methoxy-2H-chromen-2-one (H25) and (E)-7-(diethylamino)-3-(4-(methoxyphenyl)acryloyl)-2H-chromen-2-one (H12) showed the highest antileishmanial activity with EC50 values of 18.
View Article and Find Full Text PDFBMC Prim Care
December 2024
Fundación Mundo Sano, Buenos Aires, Argentina.
Background: Mother-to-child transmission (MTCT) of Trypanosoma cruzi and hepatitis B virus (HBV) increases morbidity and disability in Latin America and the Caribbean. The tailormade comprehensive antenatal care based on the Framework for the elimination of MTCT of HIV, syphilis, hepatitis B virus (HBV), and Chagas disease (EMTCT Plus) has been implemented in the region since 2018 through a private-public partnership. This study aimed to estimate the effectiveness of the intervention in preparing MTCT of T.
View Article and Find Full Text PDFRev Soc Bras Med Trop
December 2024
Instituto Oswaldo Cruz, Laboratório Nacional e Internacional de Referência em Taxonomia de Triatomíneos, Rio de Janeiro, RJ, Brasil.
Background: This paper reports the occurrence of Panstrongylus guentheri Berg, 1879 in the State of Mato Grosso (MT).
Methods: Triatomines were captured in rural environments in municipalities of MT. Specimens were identified, and Trypanosoma cruzi infection was investigated.
BMC Complement Med Ther
December 2024
Center of Natural Product Medicine Research and Development, Institute of Tropical Disease, Universitas Airlangga, Surabaya, Indonesia.
Background: Neglected tropical diseases (NTDs) afflict nearly 2 billion people worldwide and are caused by various pathogens, such as bacteria, protozoa, and trypanosoma, prevalent in tropical and subtropical regions. Among the 17 NTDs recognized by the World Health Organization (WHO), protozoal infections caused by Plasmodium, Entamoeba, Leishmania, and Trypanosoma are particularly prominent and pose significant public health. Indonesia, endowed with a rich biodiversity owing to its tropical climate, harbors numerous plant species with potent biological activities that hold promise for therapeutic interventions.
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