Hyo-Jong Lee1, Kyu-Won Kim. 1. College of Pharmacy, Inje University, Gimhae, Gyungnam, South Korea. hjlee@inje.ac.kr
Abstract
OBJECTIVES AND DESIGN: Arbutin, which is found in the genus Arctostaphylos, is an anti-oxidant and a depigmenting agent. The present study was designed to validate the anti-inflammatory effect of arbutin. MATERIALS AND METHODS: The anti-inflammatory properties of arbutin were studied using a lipopolysaccharide (LPS)-stimulated murine BV2 microglial cells model. As inflammatory parameters, the production of nitric oxide (NO), inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), monocyte chemoattractant protein-1 (MCP-1), and interleukin-6 (IL-6) were evaluated. We also examined the expression of ninjurin1 (Ninj1) and the adhesion activity of BV2 cells. Finally, we analyzed the activation of the nuclear factor-κB (NF-κB) signaling pathway. RESULTS: Arbutin suppressed LPS-induced production of NO and expression of iNOS and COX-2 in a dose-dependent manner without causing cellular toxicity. Arbutin also significantly reduced generation of proinflammatory cytokines, including IL-1β and TNF-α, and other inflammation-related genes such as MCP-1 and IL-6. Additionally, arbutin suppressed the adhesion activity of BV2 cells and the expression of an important adhesion molecule, Ninj1, in LPS-stimulated murine BV2 cells. Furthermore, arbutin inhibited nuclear translocation and the transcriptional activity of NF-κB. CONCLUSIONS: Taken together, our results suggest that arbutin might be useful for treating the inflammatory and deleterious effects of BV2 microglial cells activation in response to LPS stimulation.
OBJECTIVES AND DESIGN:Arbutin, which is found in the genus Arctostaphylos, is an anti-oxidant and a depigmenting agent. The present study was designed to validate the anti-inflammatory effect of arbutin. MATERIALS AND METHODS: The anti-inflammatory properties of arbutin were studied using a lipopolysaccharide (LPS)-stimulated murine BV2 microglial cells model. As inflammatory parameters, the production of nitric oxide (NO), inducible NO synthase (iNOS), cyclooxygenase-2 (COX-2), tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β), monocyte chemoattractant protein-1 (MCP-1), and interleukin-6 (IL-6) were evaluated. We also examined the expression of ninjurin1 (Ninj1) and the adhesion activity of BV2 cells. Finally, we analyzed the activation of the nuclear factor-κB (NF-κB) signaling pathway. RESULTS:Arbutin suppressed LPS-induced production of NO and expression of iNOS and COX-2 in a dose-dependent manner without causing cellular toxicity. Arbutin also significantly reduced generation of proinflammatory cytokines, including IL-1β and TNF-α, and other inflammation-related genes such as MCP-1 and IL-6. Additionally, arbutin suppressed the adhesion activity of BV2 cells and the expression of an important adhesion molecule, Ninj1, in LPS-stimulated murine BV2 cells. Furthermore, arbutin inhibited nuclear translocation and the transcriptional activity of NF-κB. CONCLUSIONS: Taken together, our results suggest that arbutin might be useful for treating the inflammatory and deleterious effects of BV2 microglial cells activation in response to LPS stimulation.
Authors: Sun Hwa Lee; Dae Won Kim; Su Sun Back; Hyun Sook Hwang; Eun Young Park; Tae-Cheon Kang; Oh-Shin Kwon; Jong Hoon Park; Sung-Woo Cho; Kyu Hyung Han; Jinseu Park; Won Sik Eum; Soo Young Choi Journal: BMB Rep Date: 2011-07 Impact factor: 4.778
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