Standardized extract of Centella asiatica ECa 233 inhibits lipopolysaccharide-induced cytokine release in skin keratinocytes by suppressing ERK1/2 pathways

• Published in: Asian Pacific Journal of Tropical Biomedicine
• Main Authors: Furoida Moolsap, Supita Tanasawet, Mayuree H Tantisira, Pilaiwanwadee Hutamekalin, Varomyalin Tipmanee, Wanida Sukketsiri
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wolters Kluwer Medknow Publications 2020
• Subjects: centella asiatica; cyclooxygenase-2; hacat; interleukin-1β; tumor necrosis factor-α; Arctic medicine. Tropical medicine; RC955-962; Biology (General); QH301-705.5; Arctic
• Online Access: https://doi.org/10.4103/2221-1691.283941; https://doaj.org/article/b144f4dd85cf4e9db77bd00f860fde47

Objective: To evaluate the effect of standardized extract of Centella asiatica ECa 233 on inflammatory mediator production through cyclooxygenase-2 (COX-2), extracellular signal-regulated kinase 1/2 (ERK1/2) and nuclear factor-κB (NF-κB) pathway in keratinocyte HaCaT cells. Methods: HaCaT cells were treated with 0.1, 1, 10 and 100 μg/mL ECa 233 in the presence of lipopolysaccharide (LPS). Proinflammatory cytokines and prostaglandin E2 were assessed with ELISA. Western blotting was used to determine the inhibition of COX-2, ERK1/2 and NF-κB protein expression. Results: ECa 233 suppressed LPS-induced release of interleukin- 1β, tumor necrosis factor-α, and prostaglandin E2. ECa 233 also inhibitedCOX-2, phosphorylation of ERK1/2 and the activation of NF-κB. Moreover, the formation of reactive oxygen species (ROS) was decreased in response to LPS-inflamed keratinocytes. Conclusions: ECa 233 inhibits LPS-stimulated production of inflammatory mediators in keratinocytes via suppressing ERK1/2 andNF-κB pathways. The suppressive effect of ECa 233 may be related to an inhibition of ROS production.