Abstract
The dried unripe fruit of Rubus coreanus, which is well-known in Korea and referred to as 'Bok-bun-ja', has been employed as a traditional medicine for centuries. This crude drug is utilized in Korea for the management of impotence, spermatorrhea, enuresis, asthma and allergic diseases. The principal objective of the present study was to conduct a comparison of the antiinflammatory effects of ethanol extracts of the unripe (URCE), half-ripened (HRCE) and ripe fruits (RCE) of Rubus coreanus. URCE and HRCE were found to reduce the production of nitric oxide (NO) and prostaglandin E2 (PGE2) as well as pro-inflammatory cytokines, in lipopolysaccharide (LPS)-stimulated RAW264.7 murine macrophages. However, RCE exerted no inhibitory effects against the production of NO and IL-6. The results of the study show that the degree of fruit ripening of Rubus coreanus affects the production of inflammatory mediators such as NO, PGE2 and inflammatory cytokines.
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