Publications by authors named "Y Niwano"

The Great Salt Lake, located in Utah, USA, is a saltwater lake with no outlet and is surrounded by vast mountains and salt deserts. We aimed to use Great Salt Lake-derived processed mineral water (hereafter termed as GSL-MW) for maintaining oral health. Therefore, we examined its radical scavenging activity as an antioxidant and its cytoprotective effect on human gingival fibroblasts (hGFs).

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The effect of terahertz (THz) radiation has been studied in medicine. However, there is a lack of scientific information regarding its possible mutagenicity. Therefore, the present study aimed to assess the mutagenicity of 1.

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Proanthocyanidins (PACs), which are oligomers or polymers of flavan-3ols with potent antioxidative activity, are well known to exert a variety of beneficial health effects. Nonetheless, their bioaccessibility and bioavailability have been poorly assessed. In this review, we focused on the metabolic fate of PACs through the digestive tract.

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Objectives: An antimicrobial technique utilizing hydroxyl radicals generated by the photolysis of 3% HO has been developed recently. The present study aimed to evaluate the effect of HO photolysis treatment on tooth demineralization caused by Streptococcus mutans biofilm.

Materials And Methods: To induce tooth demineralization, S.

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The nitrogen rule in mass spectrometry was used to search for new nitrogen-compounds from microbial metabolites. During this program, two new nitrogen-containing compounds, penicidones E and F, were discovered from the filamentous fungal strain FKI-7498, which was isolated from soil collected in Tokushima, Japan, and identified as Oidiodendron sp. by sequence analysis of the internal transcribed spacer region, including 5.

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