Dendropanax morbifera Léveille extract ameliorates D-galactose-induced memory deficits by decreasing inflammatory responses in the hippocampus.

Abstract

In the present study, we examined the effects of Dendropanax morbifera Léveille leaf extract (DML) on D-galactose-induced morphological changes in microglia and cytokines, including pro-inflammatory cytokines (interleukin [IL]-1β, IL-6, and tumor necrosis factor [TNF]-α) and anti-inflammatory cytokines (IL-4 and IL-10) in the hippocampus. Administration of DML to D-galactose-treated mice significantly improved D-galactose-induced reduction in escape latency, swimming speed, and spatial preference for the target quadrant. In addition, administration of DML to D-galactose-treated mice significantly ameliorated the microglial activation and increases of IL-1β, IL-6, and TNF-α levels in the hippocampus. Administration of D-galactose significantly reduced IL-4 levels in the hippocampus, while administration of DML to D-galactose-treated mice significantly increased IL-4 level. However, we did not observe any significant changes in IL-10 levels in hippocampal homogenates. These results suggest that DML reduces D-galactose-induced mouse senescence by reducing pro-inflammatory cytokines such as IL-1β, IL-6, and TNF-α, as well as increasing anti-inflammatory cytokine IL-4.

• Authors: Kwon Young Lee, Hyo Young Jung, Dae Young Yoo, Woosuk Kim, Jong Whi Kim, Hyun Jung Kwon, Dae Won Kim, Yeo Sung Yoon, In Koo Hwang, Jung Hoon Choi
• Journal: Laboratory animal research (Lab Anim Res) Vol. 33 Issue 4 Pg. 283-290 (Dec 2017) ISSN: 1738-6055 [Print] England
• PMID: 29399025 (Publication Type: Journal Article)