Acute ingestion of yerba mate infusion (Ilex paraguariensis) inhibits plasma and lipoprotein oxidation

Autor(es)

da Silva, Edson L. ^[1] ; Neiva, Terezinha J. C. ^[1] ; Shirai, Mutsuko ^[2] ; Terao, Junji ^[3] ; Abdalla, Dulcineia S. P. ^[4]

Afiliação do(s) autor(es)

^[1] Univ Fed Santa Catarina, Hlth Sci Ctr, Dept Clin Anal, BR-88040970 Florianopolis, SC - Brazil

^[2] Yasuda Womens Univ, Fac Human Ecol, Dept Nutr Sci, Hiroshima - Japan

^[3] Univ Tokushima, Grad Sch, Inst Hlth Biosci, Dept Food Sci, Tokushima - Japan

^[4] Univ Sao Paulo, Sch Pharmaceut Sci, Dept Clin & Toxicol Anal, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Food Research International; v. 41, n. 10, p. 973-979, DEC 2008.
• Citações Web of Science: 20

Resumo

Yerba mate extract (Ilex paraguariensis) is a Source of phenolic compounds that possesses in vitro antioxidant activities and may contribute to a reduction in the risk of cardiovascular disease. In this Study we examined the acute effects of the consumption of mate infusion on ex vivo plasma and low-density lipoprotein (LDL) oxidation, plasma antioxidant capacity, and platelet aggregation. Twelve healthy fasted subjects ingested 500 mL. of mate infusion and blood samples were collected before and I h after mate intake. Lipid peroxidation of plasma and LDL was monitored by the measurement of cholesteryl-ester hydroperoxides (CE-OOH) and cholesterol oxides. The plasma antioxidant capacity was measured as ferric-reducing antioxidant potential (FRAP). Platelet aggregation was evaluated in platelet-rich plasma Stimulated with adenosine diphosphate and coagulation was tested in platelet-poor plasma. Ingestion of mate infusion diminished the ex vivo oxidizability of both plasma and LDL particles. After mate intake, the CE-OOH levels were around 50% lower in plasma oxidized with copper or 2,2'-azobis{[}-2-amidine-propane-hydrochloride] (AAPH) and the lag time to plasma oxidation increased 2-fold (P < 0.05). Copper- and AAPH-induced LDL peroxidation were also inhibited by around 50% and 20%, respectively, after mate Consumption (P < 0.05). The levels of various oxysterols were significantly reduced in oxidized-plasma and LDL (P < 0.05) and FRAP increased by 7.7% after mate intake (P < 0.01). However. mate consumption did not inhibit platelet aggregation or blood coagulation. In summary, intake of yerba mate infusion improved the antioxidant capacity and the resistance of plasma and LDL particles to ex vivo lipid peroxidation. (C) 2008 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 03/02832-1 - Biomarcadores da lipoperoxidacao e glicacao no diabetes.
• Beneficiário: Dulcineia Saes Parra Abdalla
• Modalidade de apoio: Auxílio à Pesquisa - Regular