title: Curcumin Protects against 1-Methyl-4-phenylpyridinium Ion- and Lipopolysaccharide-Induced Cytotoxicities in the Mouse Mesencephalic Astrocyte via Inhibiting the Cytochrome P450 2E1.
abstract: Curcumin is extracted from the rhizomes of the ginger family plant Curcuma longa L., which has a good protection for liver, kidney, and immune system. However, there is little information about its contribution in protection of astrocytes recently. The present study was undertaken to elucidate the protective effect of curcumin, an herbal antioxidant, on 1-methyl-4-phenylpyridinium ion- (MPP(+)-) and lipopolysaccharide- (LPS-) induced cytotoxicities, as well as the underlying mechanisms by using primary mouse mesencephalic astrocytes. The results showed that curcumin protected the mesencephalic astrocytes from MPP(+)- and LPS-induced toxicities along with reducing reactive oxygen species (P < 0.05) and maleic dialdehyde (P < 0.05) sufficiently. Moreover, curcumin significantly inhibited the cytochrome P450 2E1 (CYP2E1) expression (P < 0.01 at mRNA level, P < 0.05 at protein level) and its activity (P < 0.05) sufficiently induced by MPP(+) and LPS in the mouse mesencephalic astrocytes. And curcumin as well as diallyl sulphide, a CYP2E1 positive inhibitor, ameliorated MPP(+)- and LPS-induced mouse mesencephalic astrocytes damage. Accordingly, curcumin protects against MPP(+)- and LPS-induced cytotoxicities in the mouse mesencephalic astrocyte via inhibiting the CYP2E1 expression and activity.
authors.affiliation: Department of Pharmacology, Nanjing Medical University, 140 Hanzhong Road, Jiangsu, Nanjing 210029, China.
authors.forename: Hai-Yan
authors.initials: HY
authors.lastname: Gui
authors.forename: Rui-Ni
authors.initials: RN
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Peng
authors.forename: Jin-Hua
authors.initials: JH
authors.lastname: Hu
authors.forename: Zhao
authors.initials: Z
authors.lastname: Mao
authors.forename: Rui
authors.initials: R
authors.lastname: Ning
authors.forename: Wei
authors.initials: W
authors.lastname: Shang
authors.forename: Wei
authors.initials: W
authors.lastname: Liu
authors.forename: Jing
authors.initials: J
authors.lastname: Xiong
authors.forename: Gang
authors.initials: G
authors.lastname: Hu
authors.forename: Jian
authors.initials: J
authors.lastname: Yang