Abstract:
:Artemisia asiatica Nakai has been used in traditional Asian medicine for the treatment of inflammatory and other disorders. Previous studies have revealed that the formulated ethanol extract (DA-9601) of A. asiatica has pronounced antioxidative and antiinflammatory activities and exhibits cytoprotective effects against experimentally induced gastrointestinal, hepatic and pancreatic damage. In the present study, we assessed the inhibitory effect of DA-9601 on tumor promotion, which is closely linked to inflammatory tissue damage. As an initial approach to evaluating the possible antitumor-promoting potential of DA-9601, its effects on TPA-induced ear edema were examined in female ICR mice. Pretreatment of the inner surface of the mouse ear with DA-9601 30 min prior to topical application of TPA inhibited ear edema at 5 hr. TPA-stimulated expression of epidermal COX-2 and iNOS was also mitigated by topical application of the same extract. Moreover, DA-9601 abrogated the TPA-mediated activation of NF-kappa B/Rel and AP-1 in mouse epidermis. Suppression of epidermal NF-kappa B by DA-9601 appeared to be mediated in part through inhibition of I kappa B alpha degradation, thereby blocking the nuclear translocation of p65, the functional subunit of NF-kappa B. DA-9601 also significantly suppressed TPA-induced ODC activity and papilloma formation in mouse skin. Taken together, these findings suggest that DA-9601 derived from A. asiatica possesses potential chemopreventive activities.
journal_name
Int J Cancerjournal_title
International journal of cancerauthors
Seo HJ,Park KK,Han SS,Chung WY,Son MW,Kim WB,Surh YJdoi
10.1002/ijc.10489keywords:
subject
Has Abstractpub_date
2002-08-01 00:00:00pages
456-62issue
4eissn
0020-7136issn
1097-0215journal_volume
100pub_type
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