2022Journal article
Silva TM, Fracasso DS, Vargas Visentin AP, Cassini C, Scariot FJ, Danetti S, Echeverrigaray S, Moura S, Touguinha LB, Branco CS, Salvador M
Journal of ethnopharmacology
Ethnopharmacological relevance: Matcha green tea (Camellia sinensis) based-supplements have been widely used since they present a greater content of phenolic compounds than traditional green tea, which is popularly used in the treatment of diabetes. However, there are few studies on the effectiveness and safety of matcha supplements. Aim of the study: This work aimed to evaluate the efficacy and safety of this supplement in endothelial cells (EA.hy926) in the hyperglycemic model and in vivo Artemia salina. Materials and methods: To assess the effect of Matcha herbal supplement (MHS), EA. hy926 endothelial cells were treated with 20 μg/mL of MHS for 24 h, in a hyperglycemic medium with 35 mM glucose. After treatment, cells were trypsinized and centrifuged at 4 °C and 47×g for 5 min. The pellet was used to determine the reaction products to thiobarbituric acid and the levels of nitric oxide. Electron transport chain activity and ATP levels were also evaluated. Intracellular pH, apoptosis, and mitochondrial membrane depolarization were evaluated by flow cytometry. MHS chemical characterization was performed by HPLC-UV and total phenolic content analysis. The evaluation of the antioxidant capacity of MHS was performed by 2,2-diphenyl-1-picrylhydrazyl radical scavenger assay. To determine the in vivo acute toxicity of MHS, an A. salina assay was conducted, using 0,2 mL of different concentrations of MHS (10, 50, 100, 250, 500, 750 and 1000 μg/mL). The LD50 values were obtained by interpolation of 50% (y = 50) of the dead individuals in the trend curves. Results: Our data showed that MHS was able to avoid oxidative and nitrosative stress induced by hyperglycemia, demonstrating important antioxidant activity. However, it was observed that MHS reduced up to 90% the activity of…
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Study type
Animal study
Experiments in mice, rats, fish or other animals.
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Topics
Matcha is a main subject here (named in the title).
Silva TM, Fracasso DS, Vargas Visentin AP, Cassini C, Scariot FJ, Danetti S, … Salvador M. (2022). Dual effect of the herbal matcha green tea (Camellia sinensis L. kuntze) supplement in EA.hy926 endothelial cells and Artemia salina. Journal of ethnopharmacology. https://doi.org/10.1016/j.jep.2022.115564
DOI: 10.1016/j.jep.2022.115564 · PubMed ID: 35940467 · Cited by 14 (OpenAlex)
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