title: Flow cytometric estimation of the effect of Ginkgo biloba extract on the content of hydrogen peroxide in dissociated mammalian brain neurons.
abstract: The effect of Ginkgo biloba extract (GBE) on the content of hydrogen peroxide was estimated in cerebellar neurons dissociated from rats, by means of a flow-cytometer and 2',7'-dichlorofluorescein (DCF) diacetate, a fluorescent dye for intracellular hydrogen peroxide. The GBE started to reduce the DCF fluorescence of the neuron at 0.1 microgram/ml to 0.3 microgram/ml. Further increases in the GBE concentration (up to 3 micrograms/ml) produced a dose-dependent decrease in the DCF fluorescence, suggesting that GBE reduces the content of hydrogen peroxide or suppresses the reactive oxygen species (ROS) formation of cerebellar neurons. The present technique may be useful for preliminary evaluations of agents affecting the ROS formation in mammalian brain neurons.
authors.affiliation: Laboratory for Pharmacology, Faculty of Integrated Arts and Sciences, University of Tokushima, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Oyama
authors.forename: T
authors.initials: T
authors.lastname: Ueha
authors.forename: A
authors.initials: A
authors.lastname: Hayashi
authors.forename: L
authors.initials: L
authors.lastname: Chikahisa
authors.forename: K
authors.initials: K
authors.lastname: Noda
mesh_terms: D000818:Animals; D001921:Brain / Q000166:cytology; D001923:Brain Chemistry / Q000187:drug effects*; D002531:Cerebellum / Q000166:cytology / Q000187:drug effects; D005434:Flow Cytometry; D006861:Hydrogen Peroxide / Q000378:metabolism*; D066298:In Vitro Techniques; D009474:Neurons / Q000187:drug effects / Q000378:metabolism*; D010936:Plant Extracts / Q000494:pharmacology*; D051381:Rats; D017208:Rats, Wistar; D017382:Reactive Oxygen Species / Q000378:metabolism
chemical_list: D010936:Plant Extracts; D017382:Reactive Oxygen Species; D006861:Hydrogen Peroxide