Prunella vulgaris extract and rosmarinic acid suppress lipopolysaccharide-induced alteration in human gingival fibroblasts.
Periodontitis is a chronic disease associated with inflammation of the tooth-supporting tissues. The inflammation is initiated by a group of gram-negative anaerobic bacteria. These express a number of irritating factors including a lipopolysaccharide (LPS), which plays a key role in periodontal disease development. Plant extracts with anti-inflammatory and anti-microbial properties have been shown to inhibit bacterial plaque formation and thus prevent chronic gingivitis. In this study we tested effects of Prunella vulgaris L. extract (PVE; 5, 10, 25microg/ml) and its component rosmarinic acid (RA; 1microg/ml) on LPS-induced oxidative damage and inflammation in human gingival fibroblasts. PVE and RA reduced reactive oxygen species (ROS) production, intracellular glutathione (GSH) depletion as well as lipid peroxidation in LPS-treated cells. Treatment with PVE and RA also inhibited LPS-induced up-regulation of interleukin 1beta (IL-1beta), interleukin 6 (IL-6), tumor necrosis factor-alpha (TNF-alpha) and suppressed expression of inducible nitric oxide synthase (iNOS). The results indicate that PVE and RA are able to suppress LPS-induced biological changes in gingival fibroblasts. The effects of PVE and RA are presumably linked to their anti-inflammatory activities and thus use of PVE and RA may be relevant in modulating the inflammation process, including periodontal disease.
Zdarilová
A
A
Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Hnevotínská 3, Palacký University, 775 15 Olomouc, Czech Republic.
Svobodová
A
A
Simánek
V
V
Ulrichová
J
J
D000975:Antioxidants / Q000032:analysis / Q000494:pharmacology*; D002470:Cell Survival / Q000187:drug effects; D002478:Cells, Cultured; D002934:Cinnamates / Q000032:analysis / Q000494:pharmacology*; D053630:Depsides / Q000032:analysis / Q000494:pharmacology*; D004336:Drug Antagonism; D005347:Fibroblasts / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D005881:Gingiva / Q000187:drug effects* / Q000378:metabolism / Q000473:pathology; D005978:Glutathione / Q000378:metabolism; D006801:Humans; D008070:Lipopolysaccharides / Q000037:antagonists & inhibitors / Q000633:toxicity; D018384:Oxidative Stress / Q000187:drug effects; D010936:Plant Extracts / Q000494:pharmacology; D031347:Prunella / Q000737:chemistry*; D017382:Reactive Oxygen Species / Q000378:metabolism; D000097123:Rosmarinic Acid
D000975:Antioxidants; D002934:Cinnamates; D053630:Depsides; D005978:Glutathione; D008070:Lipopolysaccharides; D010936:Plant Extracts; D017382:Reactive Oxygen Species; D000097123:Rosmarinic Acid