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KMID : 1123920050190020481
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Korean Journal of Oriental Physiology and Pathology
2005 Volume.19 No. 2 p.481 ~ p.489
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Inhibition of Lipopolysaccharide-Inducible Nitric Oxide Synthase, TNF-α, IL-1β and COX-2 Expression by Flower and Whole Plant of Lonicera japonica
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Lee Dong-Eun
Lee Jae-Ryung
Kim Young-Woo
Kwon Young-Kyu
Byun Sung-Hui
Shin Sang-Woo
Suh Seong-Il
Kwon Taeg-Kyu
Byun Joon-Seok
Kim Sang-Chan
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Abstract
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Lonicerae Flos has antibacterial effects against Staphylococcus aureus, streptococci, pneumococci, Bacillus dysenterii, Salmonella typhi, and paratyphoid. It is an antiviral agent. The herb has a cytoprotective effect against hepatic injury. It has antilipemic action, interfering with lipid absorption from the gut. Nowadays this herb is used mainly in the treatment of upper respiratory infections, such as tonsillitis and acute laryngitis. It is also used in the treatment of skin suppurations, such as carbuncles, and to treat viral conjunctivitis, influenza, pneumonia, and mastitis. Lonicerae Flos is dried flower buds of Lonicera japonica, L. hypoglauca, L. confusa, or L. dasystyla. But, for the most part, we use whole plant of Lonicera japonica, as a flower bud of it. And, little is known of the original copy of effects of whole plant, except for the ’Bon-Cho-Gang-Mok’, which is written the effects of flower of Lonicera japonica are equal to effects of leaves and branch of it. The present study was conducted to evaluate the effect of flower and whole plant of Lonicera japonica on the regulatory mechanism of cytokines, inducible nitric oxide synthase (iNOS) and cyclooxygenase (COX-2) for the immunological activities in Raw 264.7 cells. In Raw 264.7 cells stimulated with lipopolysaccharide (LPS) to mimic inflammation, flower and whole plant of Lonicera japonica water extracts inhibited nitric oxide production in a dose-dependent manner and abrogated iNOS and COX-2. Flower and whole plant of Lonicera japonica water extract did not affect on cell viability. To investigate the mechanism by which flower and whole plant of Lonicera japonica water extract inhibits iNOS and COX-2 gene expression, we examined the on phosphorylation of inhibitor and assessed production of , and interleukin-6 (IL-6). Results provided evidence that flower and whole plant of Lonicera japonica inhibited the production of , IL-6 and activated the phosphorylation of inhibitor in Raw 264.7 cells activated with LPS. These findings suggest that flower and whole plant of Lonicera japonica can produce anti-inflammatory effect, which may play a role in adjunctive therapy in Gram-negative bacterial infections, respectively.
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KEYWORD
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Lonicerae Flos, Nitric oxide, iNOS, COX-2
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