title: Cudratricusxanthone A protects mouse hippocampal cells against glutamate-induced neurotoxicity via the induction of heme oxygenase-1.
abstract: Cudratricusxantone A (CTXA), isolated from the roots of Cudrania tricuspidata Bureau (Moraceae), has potent hepatoprotective, antiproliferative, and monoamine oxidase inhibitory effects. In this study, we examined whether CTXA could protect HT22-immortalized hippocampal cells against glutamate-induced oxidative stress through the induction of heme oxygenase (HO)-1 expression. CTXA induced the expression of HO-1 and increased HO activity dose- and time-dependently. CTXA also suppressed glutamate-induced ROS generation in HT22 cells. Interestingly, treatment of neuronal cells with CTXA enhanced cellular resistance to glutamate oxidative stress. The protective effect of CTXA was abrogated by tin protoporphyrin IX, an HO inhibitor. In addition, treatment with the HO-1 inducer, cobalt protoporphyrin IX, and bilirubin, one of the enzymatic products of HO-1, produced comparable protection. These results demonstrate that CTXA protects neuronal cells from glutamate-induced oxidative stress via the induction of HO-1.
authors.affiliation: Institute for Radiological Imaging Science, Wonkwang University, Iksan, Korea.
authors.forename: Gil-Saeng
authors.initials: GS
authors.lastname: Jeong
authors.forename: Ren-Bo
authors.initials: RB
authors.lastname: An
authors.forename: Hyun-Ock
authors.initials: HO
authors.lastname: Pae
authors.forename: Hun-Taeg
authors.initials: HT
authors.lastname: Chung
authors.forename: Kwon-Ha
authors.initials: KH
authors.lastname: Yoon
authors.forename: Dae-Gill
authors.initials: DG
authors.lastname: Kang
authors.forename: Ho-Sub
authors.initials: HS
authors.lastname: Lee
authors.forename: Youn-Chul
authors.initials: YC
authors.lastname: Kim
mesh_terms: D000818:Animals; D002460:Cell Line; D018698:Glutamic Acid / Q000633:toxicity; D051547:Heme Oxygenase-1 / Q000378:metabolism*; D006624:Hippocampus / Q000187:drug effects* / Q000201:enzymology; D051379:Mice; D029586:Moraceae / Q000737:chemistry*; D020258:Neurotoxicity Syndromes / Q000517:prevention & control*; D024301:Plant Bark / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D044004:Xanthones / Q000302:isolation & purification / Q000494:pharmacology / Q000627:therapeutic use*
chemical_list: D044004:Xanthones; C533013:cudratricusxanthone A; D018698:Glutamic Acid; D051547:Heme Oxygenase-1