Abstract | OBJECTIVE: METHODS: The inhibitory effects of 18α-GA on endothelial permeability were determined by measuring in vivo and in vitro endothelial permeability. Endothelial cells were pretreated with 18α-GA before exposure to P. gingivalis LPS, and total RNA or proteins were extracted and analyzed by reverse transcription polymerase chain reaction or western blotting. RESULTS: Porphyromonas gingivalis LPS-induced endothelial permeability was significantly inhibited by 18α-GA both in vivo and in vitro. 18α-GA reduces P. gingivalis LPS-induced gap formation of endothelial cells. Importantly, 18α-GA modulated the expression and secretion of interleukin-8 (IL-8), a key inducer of vascular permeability, by downregulating nuclear factor-κB (NF-κB). 18α-GA suppressed P. gingivalis LPS-stimulated inhibitor of kappa B (IκB) kinase activation, IκBα phosphorylation, and nuclear translocation of NF-κB. CONCLUSIONS: Overall, these findings suggest that 18α-GA significantly reduces P. gingivalis LPS-induced vascular permeability by repressing NF-κB-dependent endothelial IL-8 production, suggesting its therapeutic potential in P. gingivalis-related vascular diseases.
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Authors | Su-Ryun Kim, Hwa-Jin Jeon, Hyun-Joo Park, Mi-Kyoung Kim, Woo-Soo Choi, Hye-Ock Jang, Soo-Kyung Bae, Chul-Ho Jeong, Moon-Kyoung Bae |
Journal | Inflammation research : official journal of the European Histamine Research Society ... [et al.]
(Inflamm Res)
Vol. 62
Issue 2
Pg. 145-54
(Feb 2013)
ISSN: 1420-908X [Electronic] Switzerland |
PMID | 23064654
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- Interleukin-8
- Lipopolysaccharides
- NF-kappa B
- Glycyrrhetinic Acid
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Topics |
- Capillary Permeability
(drug effects)
- Cells, Cultured
- Endothelial Cells
(drug effects, metabolism)
- Glycyrrhetinic Acid
(pharmacology)
- Humans
- Interleukin-8
(metabolism)
- Lipopolysaccharides
- NF-kappa B
(metabolism)
- Porphyromonas gingivalis
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