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Background: Angiogenesis has been implicated in tissue injury in several noninfectious diseases, but its role in Chagas disease (CD) physiopathology is unclear.
Objectives: The present study aimed to investigate the effect of Trypanosoma cruzi infection on cardiac angiogenesis during the acute phase of experimental CD.
Methods: The signalling pathway involved in blood vessel formation and cardiac remodelling was evaluated in Swiss Webster mice infected with the Y strain of T. cruzi. The levels of molecules involved in the regulation of angiogenesis, such as vascular endothelial growth factor-A (VEGF-A), Flk-1, phosphorylated extracellular-signal-regulated protein kinase (pERK), hypoxia-inducible factor-1α (HIF-1α), CD31, α-smooth muscle actin (α-SMA) and also the blood vessel growth were analysed during T. cruzi infection. Hearts were analysed using conventional histopathology, immunohistochemistry and western blotting.
Findings: In this study, our data demonstrate that T. cruzi acute infection in mice induces exacerbated angiogenesis in the heart and parallels cardiac remodelling. In comparison with noninfected controls, the cardiac tissue of T. cruzi-infected mice presented higher levels of (i) HIF-1α, VEGF-A, Flk-1 and pERK; (ii) angiogenesis; (iii) α-SMA+ cells in the tissue; and (iv) collagen -1 deposition around blood vessels and infiltrating throughout the myocardium.
Main Conclusions: We observed cardiac angiogenesis during acute experimental T. cruzi infection parallels cardiac inflammation and remodelling.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9677593 | PMC |
http://dx.doi.org/10.1590/0074-02760220005 | DOI Listing |
Am J Trop Med Hyg
December 2024
Centro para el Desarrollo de la Investigación Científica, Asunción, Paraguay.
Most triatomine bugs inhabit nests and shelters of vertebrates, some of which are closely associated with palm trees. A few species occupy domestic and peridomestic habitats, posing a threat to human health as natural transmitters of Chagas disease. A peridomestic specimen that yielded positive results for Trypanosoma cruzi in both microscope and polymerase chain reaction tests was collected during a vector control survey in northeastern Paraguay.
View Article and Find Full Text PDFHeliyon
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 PDFBMC Vet Res
December 2024
Zoology and Entomology Department, Faculty of Science, Al-Azhar University (Girl's Branch), Cairo, Egypt.
Background: Sarcocystosis is a parasitic disease found worldwide, resulting from various Sarcocystis species. The current research was carried out in three significant economic areas in Egypt: Greater Cairo, the Nile Delta, and Upper Egypt. It aimed to investigate the occurrence of Sarcocystis spp.
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.
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