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The Chinese medicine, Kanglao concoction has been used clinically to treat tuberculosis. However, its constituents and anti-inflammatory activity have not been fully understood.
In this study, HPLC-MS2 has been employed to determine the main constituents in the concoction. The anti-inflammatory activity has been investigated by ELISA and Western Blot techniques. The MS analysis revealed that tigogenin and afzelin were two main constituents in Kanglao concoction.
Moreover, the result of ELISA experiments showed that Kanglao concoction significantly reduced the expression of TNF-α and IL-1β at 5 mg/mL and 10 mg/mL to inhibit inflammation.
The expression of Notch pathway-related proteins in A549 cells increased under the stimulation of Mycobacterium tuberculosis, and decreased dose-dependently upon the treatment of Kanglao concoction, which was deduced to inhibit Notch pathway expression to impose anti-inflammatory activity.
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