Efeito neuroprotetor do extrato aquoso de erva mate (Ilex paraguariensis) em modelo in vitro de doença de parkinson

Autores

DOI:

https://doi.org/10.21527/2176-7114.2026.51.16960

Palavras-chave:

Antioxidantes, Doença de Parkinson, Estresse oxidativo, Neuroproteção

Resumo

A doença de Parkinson (DP) permanece uma condição incurável, e estratégias voltadas à atenuação do estresse oxidativo e da neurodegeneração têm sido amplamente investigadas, incluindo o uso de extratos e infusões de origem vegetal ricos em compostos bioativos, como a erva-mate (Ilex paraguariensis). Com base nessa premissa, o presente estudo avaliou os efeitos do extrato aquoso de erva-mate em um modelo in vitro de DP. Células SH-SY5Y diferenciadas, com fenótipo neuronal, foram expostas a concentrações crescentes de rotenona (5, 10, 40 e 100 µM), sendo selecionada a concentração que induziu citotoxicidade após 24 h, mantendo 80–85% de viabilidade celular em relação ao controle. As culturas neuronais foram suplementadas com extrato aquoso de erva-mate (0, 1, 5, 10, 20 e 100 µg/mL). O extrato foi caracterizado pela presença de alcaloides (cafeína e teobromina), taninos e compostos polifenólicos. O tratamento com erva-mate a 10 µg/mL em culturas expostas a 40 µM de rotenona reduziu a citotoxicidade e a apoptose, avaliadas por citometria de fluxo, além de modular a expressão gênica de enzimas antioxidantes e a expressão e os níveis de proteína das caspases-3 e -8.Embora os parâmetros de estresse oxidativo no grupo erva-mate associado à rotenona tenham permanecido superiores aos observados nas culturas tratadas apenas com erva-mate, indicando atenuação parcial dos efeitos antioxidantes na presença da rotenona, foi observada proteção contra o dano oxidativo ao DNA. De modo geral, esses achados sugerem que o extrato aquoso de erva-mate exerce efeitos moduladores sobre o estresse oxidativo e as vias de morte celular neste modelo in vitro de DP.

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Publicado

2026-03-25

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Musachio, E., Rosa, T. S. M., Azzolin, V. F., Mastella, M. H., Felin, I. P. D., Duarte, M. M. F., … Barbisan, F. (2026). Efeito neuroprotetor do extrato aquoso de erva mate (Ilex paraguariensis) em modelo in vitro de doença de parkinson. Revista Contexto & Saúde, 26(51), e16960. https://doi.org/10.21527/2176-7114.2026.51.16960

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