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  • Title: Analysis of propolis from Baccharis dracunculifolia DC. (Compositae) and its effects on mouse fibroblasts.
    Author: de Funari CS, de Oliveira Ferro V, Mathor MB.
    Journal: J Ethnopharmacol; 2007 May 04; 111(2):206-12. PubMed ID: 17207952.
    Abstract:
    This paper confirms Baccharis dracunculifolia DC. (Compositae) as the main botanical source of the propolis from southeastern Brazil (state of São Paulo) investigated to ascertain specific biological activity in relation to mouse NIH-3T3 fibroblasts, skin cells directly involved in the cicatrization processes. Flavonoid and total phenolic compounds were determined by spectrophotometry, and chemical composition by HPLC; the chromatographic profile, characterized largely by flavonoids and aromatic acids, was found to be qualitatively similar to that of Baccharis dracunculifolia DC. The adsorption of phenolic compounds in the propolis to skin powder was also investigated, and 68% of these compounds adsorbed to the skin powder. At concentrations from 0.12 to 7.81 microg/ml, the propolis revealed no statistical significant differences from its control solutions; however, at concentrations of 31.25 microg/ml or more, the propolis was toxic to NIH-3T3 cells. Thus, the propolis from Baccharis dracunculifolia DC. (Compositae) presents an in vitro concentration-dependent toxicity on mouse NIH-3T3 fibroblasts.
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