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v. 2 n. 1 (2021): Edição Especial: Anais de Eventos
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Anais do Congresso Brasileiro de Parasitologia Humana On-line
EFEITOS DA INFECÇÃO CRÔNICA POR Toxoplasma gondii E DO TRATAMENTO COM Echinacea purpurea SOBRE A ATIVIDADE DA ENZIMA MIELOPEROXIDASE NO ÍLEO DE RATOS WISTAR
Autores
Claudia Nara de Almeida Lino Bratti
Maria José Pastre
Amanda Gubert Alves dos Santos
Débora de Mello Gonçales Sant'Ana
Gessilda de Alcantara Nogueira de Melo
Palavras-chave:
Intestino delgado, Terapia, Toxoplasmose
Resumo
Introdução: A infecção por Toxoplasma gondii incita o desenvolvimento de uma resposta inflamatória intestinal. Na fase inicial desta resposta ocorre a liberação de mediadores e citocinas com aumento do fluxo sanguíneo, da permeabilidade vascular e da migração de leucócitos. O acúmulo de leucócitos no tecido pode ser avaliado indiretamente pela atividade da enzima mieloperoxidase (MPO), presente nessas células. Echinacea purpurea (EP) é uma planta com importante ação anti-inflamatória e vem sendo estudada como nova opção terapêutica para a toxoplasmose. Objetivo: Avaliar os efeitos da infecção crônica por T. gondii e do tratamento com EP sobre a atividade da enzima MPO no íleo de ratos Wistar. Material e métodos: Aprovado pelo Comitê de Ética no Uso de Animais da Universidade Estadual de Maringá (n° 7633021018). Foram utilizados 16 ratos Wistar (n=4) distribuídos em: Grupo Controle (GC), Grupo Infectado (GI), Grupo Controle Tratado (GC-EP) e Grupo Infectado Tratado (GI-EP). Os ratos dos grupos GC-EP e GI-EP foram tratados com 100 mg/kg de EP, por gavagem, 28 dias antes e 28 dias depois da infecção, já aqueles pertencentes aos grupos GC e GI receberam somente água fervida. Os grupos infectados receberam 500 oocistos esporulados da cepa RH de T. gondii. Findado o período experimental, os animais foram eutanasiados, segmentos do íleo coletados e armazenados à -80°C. As amostras foram processadas e a atividade da enzima MPO foi determinada em 450 nm em leitor de microplaca. Os dados foram expressos em média ± desvio padrão e a comparação foi realizada utilizando o teste de análise de variância (ANOVA) seguido de Tukey. Foi considerado significativo p<0,05. Resultados: Não houve diferença estatisticamente significativa entre os grupos [GC (0,114 ± 0,017), GI (0,112 ± 0,028), GC-EP (0,168 ± 0,080) e GI-EP (0,198 ± 0,0473)], provavelmente pelo fato do modelo de infecção utilizado neste estudo ser crônico. Conclusão: A infecção crônica com T. gondii e/ou tratamento com EP não alterou a atividade da MPO.
Como Citar
Bratti, C. N. de A. L. ., Pastre, M. J. ., Santos, A. G. A. dos ., Sant’Ana, D. de M. G. ., & Melo, G. de A. N. de . (2021). EFEITOS DA INFECÇÃO CRÔNICA POR Toxoplasma gondii E DO TRATAMENTO COM Echinacea purpurea SOBRE A ATIVIDADE DA ENZIMA MIELOPEROXIDASE NO ÍLEO DE RATOS WISTAR . Revista Multidisciplinar Em Saúde , 2 (1), 72. https://doi.org/10.51161/rems/757
Seção
Anais do Congresso Brasileiro de Parasitologia Humana On-line
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