Abstract:
ETHNOPHARMACOLOGICAL RELEVANCE:Rosmarinic acid (RA), a caffeic acid-related compound found in high concentrations in Prunella vulgaris (self-heal), and ursolic acid (UA), a pentacyclic triterpene acid concentrated in Salvia officinalis (sage), have been traditionally used to treat inflammation in the mouth, and may also be beneficial for gastrointestinal health in general. AIM OF THE STUDY:To investigate the permeabilities of RA and UA as pure compounds and in Prunella vulgaris and Salvia officinalis ethanol extracts across human intestinal epithelial Caco-2 cell monolayers. MATERIALS AND METHODS:The permeabilities and phase II biotransformation of RA and UA as pure compounds and in herbal extracts were compared using Caco-2 cells with HPLC detection. RESULTS:The apparent permeability coefficient (P(app)) for RA and RA in Prunella vulgaris extracts was 0.2 ± 0.05 × 10(-6)cm/s, significantly increased to 0.9 ± 0.2 × 10(-6)cm/s after β-glucuronidase/sulfatase treatment. P(app) for UA and UA in Salvia officinalis extract was 2.7 ± 0.3 × 10(-6)cm/s and 2.3 ± 0.5 × 10(-6)cm/s before and after β-glucuronidase/sulfatase treatment, respectively. Neither compound was affected in permeability by the herbal extract matrix. CONCLUSION:RA and UA in herbal extracts had similar uptake as that found using the pure compounds, which may simplify the prediction of compound efficacy, but the apparent lack of intestinal glucuronidation/sulfation of UA is likely to further enhance the bioavailability of that compound compared with RA.
journal_name
J Ethnopharmacoljournal_title
Journal of ethnopharmacologyauthors
Qiang Z,Ye Z,Hauck C,Murphy PA,McCoy JA,Widrlechner MP,Reddy MB,Hendrich Sdoi
10.1016/j.jep.2011.07.037subject
Has Abstractpub_date
2011-10-11 00:00:00pages
1107-12issue
3eissn
0378-8741issn
1872-7573pii
S0378-8741(11)00513-7journal_volume
137pub_type
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