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Effect of citrinin and in association with aflatoxin B1 on the infectivity and proliferation of Toxoplasma gondii in vitro
Herzog-Soares, Joanna D'Arc A; Freire, Ronald Bastos.
  • Herzog-Soares, Joanna D'Arc A; Federal University of Goiás. Institute of Tropical Pathology and Public Health. Parasitologic Section. Goiás. BR
  • Freire, Ronald Bastos; Federal University of Goiás. Institute of Tropical Pathology and Public Health. Parasitologic Section. Goiás. BR
Braz. j. infect. dis ; 8(1): 101-108, Feb. 2004. tab, graf
Artigo em Inglês | LILACS | ID: lil-362372
ABSTRACT
Macrophages exposed to 10 mug/mL citrinin (CTR) or 0.01 mug CTR mixed with 0.04 mug aflatoxin B1 (AFB1) for a period of 2 h at 37ºC, were infected with 10(6) Toxoplasma gondii tachyzoites/muL. The parasites were treated with mycotoxins (2 h at 37ºC) before being added to the macrophage culture. The number of tachyzoites was quantified 2, 24, 48, 72 and 96 h after infection. During the first 2 hours, 59 percent infectivity was observed in the control. After exposure to CTR or the mixture of toxins (CTR-AFB1), macrophages were infected with 77.5 percent and 75 percent of the inoculated tachyzoites, respectively. Similarly, 72.3 percent of the cells were infected when cultured together with previously treated parasites. The treatment with CTR-AFB1 gave rise to 2.9 times more tachyzoites than the control at 72 h. An increased number of parasites was recovered from macrophages exposed to CTR after 96 h, and to CTR-AFB1 after 72 h of culture; The number of tachyzoites recovered from the supernatant was 1.94 and 2.06 times higher, respectively, than in the control (5 x 10(5) ± 0.054 /mL).
Assuntos
Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Toxoplasma / Citrinina / Aflatoxina B1 / Macrófagos / Antibacterianos Tipo de estudo: Fatores de risco Limite: Animais Idioma: Inglês Revista: Braz. j. infect. dis Assunto da revista: Doenças Transmissíveis Ano de publicação: 2004 Tipo de documento: Artigo / Documento de projeto País de afiliação: Brasil Instituição/País de afiliação: Federal University of Goiás/BR

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Texto completo: DisponíveL Índice: LILACS (Américas) Assunto principal: Toxoplasma / Citrinina / Aflatoxina B1 / Macrófagos / Antibacterianos Tipo de estudo: Fatores de risco Limite: Animais Idioma: Inglês Revista: Braz. j. infect. dis Assunto da revista: Doenças Transmissíveis Ano de publicação: 2004 Tipo de documento: Artigo / Documento de projeto País de afiliação: Brasil Instituição/País de afiliação: Federal University of Goiás/BR