Keisuke Kijima

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Scirtothrips dorsalis Hood is a cosmopolitan and polyphagous thrips species. Recently, a novel strain of S. dorsalis attacking capsicum crops was found in Japan. A molecular phylogenetic analysis using mitochondrial cytochrome c oxidase subunit I sequences revealed that the capsicum-associated populations were genetically different from Japanese native(More)
Riboflavin (RF), flavin mononucleotide (FMN) and flavin adenine dinucleotide (FAD) caused hemolysis of isolated rabbit erythrocytes by UVA-sensitization. Hemolysis induced by UVA-sensitization with RF and FMN was inhibited by 1.0 mM histidine and EDTA, and was promoted by 0.15 mM histidine and 0.01 mM NaN3. Hemolysis induced by irradiation in anaerobic(More)
A rapid method for the HPLC determination of ultraviolet absorbent (UV abs.) in cosmetics was investigated. This method is based on the technique of solvent extraction of the sample by HPLC with silica-ODS (Develosil ODS-5) as the stationary phase A, B, C, and D as the eluent and the ultraviolet spectrophometer (310, 284 nm) as the detector. The plots of(More)
8-hydroxydeoxyguanosine (8-OHdG) was formed from dG and isolated DNA by photosensitization with rose bengal (RB) and methylene blue (MB). 8-OHdG formed from dG was decomposed by the photosensitization with these dyes. Singlet oxygen was concerned with the formation and decomposition of 8-OHdG by photosensitization. Fe++ oxidized dG to 8-OHdG, which was(More)