Yasuo Oyama scite author profile

The antioxidant activity of the methanolic extracts of the leaves of 39 plant species was examined. These leaves were collected from the plants growing on subtropical seashores. The activity was evaluated by three kinds of assay methods, which included the DPPH radical scavenging assay, linoleic acid oxidation assay, and oxidative cell death assay. Two extracts from Excoecaria agallocha and Terminalia catappa showed remarkably potent activity in all assay systems. The HPLC analysis of the extracts indicated the presence of the same antioxidant and isolation work for the compound identified ellagic acid. The isolated ellagic acid showed strong antioxidant activity in the assay systems used.

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Characterization of 2′,7′-dichlorofluorescin fluorescence in dissociated mammalian brain neurons: estimation on intracellular content of hydrogen peroxide

Oyama

et al. 1994

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Possible use of quercetin, an antioxidant, for protection of cells suffering from overload of intracellular Ca2+: A model experiment

et al. 2008

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Low micromolar zinc exerts cytotoxic action under H2O2-induced oxidative stress: Excessive increase in intracellular Zn2+ concentration

et al. 2010

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Imidazole antifungals, but not triazole antifungals, increase membrane Zn2+ permeability in rat thymocytes

et al. 2008

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Yasuo Oyama

Fluorescent Estimation of H2O2-Induced Changes in Cell Viability and Cellular Nonprotein Thiol Level of Dissociated Rat Thymocytes

Ginkgo biloba extract protects brain neurons against oxidative stress induced by hydrogen peroxide

Myricetin and quercetin, the flavonoid constituents ofGinkgo biloba extract, greatly reduce oxidative metabolism in both resting and Ca2+-loaded brain neurons

Evaluation of the Antioxidant Activity of Environmental Plants: Activity of the Leaf Extracts from Seashore Plants

Characterization of 2′,7′-dichlorofluorescin fluorescence in dissociated mammalian brain neurons: estimation on intracellular content of hydrogen peroxide

Possible use of quercetin, an antioxidant, for protection of cells suffering from overload of intracellular Ca2+: A model experiment

Low micromolar zinc exerts cytotoxic action under H2O2-induced oxidative stress: Excessive increase in intracellular Zn2+ concentration

Imidazole antifungals, but not triazole antifungals, increase membrane Zn2+ permeability in rat thymocytes

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