Effects of the topical application of an ethylacetate fraction from Vernonia scorpioides on excisional wounds infected with Staphylococcus aureus in rats

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Abstract

We investigated the healing process on excisional wounds infected with Staphylococcus aureus in rats, treated with 50 μL of ethyl acetate III from Vernonia scorpioides (Lam.) Pers., Asteraceae, rifamycin diethylamide B 25 mg, or saline. The lesions were measured daily and after seven days were surgically removed and histologically processed. The results indicate a favorable action of the EAIII, demonstrated by the increased wound contraction, smaller area of necrotic tissue, good development of granulation tissue, extensive extracellular matrix deposition and epithelial regeneration. This sub-fraction was phytochemically investigated in parallel studies, revealing the presence of sesquiterpene lactones (glaucolides and hirsutinolides) such as diacethylpiptocarphol and related hirsutinolides, flavonoids and cinnamic acid derivatives and also a new polyacetylene, which have been previously published. Results support the effectiveness of V. scorpioides antimicrobial activity in infected wound healing in rats.

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Kreuger, M. R. O., Farias, B. G., Moreira, J., Blind, L. Z., Amoah, S. K. S., Leite, A. S., … Cruz, A. B. (2011). Effects of the topical application of an ethylacetate fraction from Vernonia scorpioides on excisional wounds infected with Staphylococcus aureus in rats. Revista Brasileira de Farmacognosia, 22(1), 123–130. https://doi.org/10.1590/S0102-695X2011005000192

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