Publications by authors named "Isao Okunishi"

Wasabi (Japanese horseradish, ) is the only cultivated species in the genus with functional components that provide a strong pungent flavor. To evaluate genetic resources for wasabi breeding, we surveyed variations in the two most abundant isothiocyanate (ITC) components in wasabi, allyl isothiocyanate (AITC) and 6-methylsulfinyl (hexyl) isothiocyanate (6-MSITC, hexaraphane). We also examined the phylogenetic relationships among 36 accessions of wild and cultivated wasabi in Japan using chloroplast DNA analysis.

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Article Synopsis
  • Testosterone-related hormones are linked to diseases like prostate cancer and androgenetic alopecia (AGA) and act by binding to androgen receptors (AR) in cells.
  • The study investigates dermal papilla cells (DPCs) that either express AR or do not and utilizes RNA-Seq analysis to explore genes influenced by AR signaling, specifically looking at the effects of DHT.
  • Findings could help identify key molecular targets for therapies aimed at treating prostate cancer and AGA, particularly highlighting the impact of minoxidil sulfate as a treatment option.
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Cells are often exposed to exogenous and endogenous redox disturbances and exert their protective mechanisms in response to stimuli. The KEAP1-NRF2 system plays pivotal roles in counteracting oxidative damage. Due to the transient nature of NRF2 activation, the identification of cells in which NRF2 is activated in response to systemic stimuli is sometimes not easy.

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Wasabi has been used as an important spice in Japanese foods. The wasabi leaves were used as a cosmetic material, but its biological activities have not yet been examined. We investigated the effect of isosaponarin derived from wasabi leaf on collagen synthesis in human fibroblasts.

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We investigated the effect of wasabi rhizome extract on atopic dermatitis (AD) model mice. The wasabi extract was fed to the HR-1 hairless mice, which develop AD-like symptoms with a special diet (HR-AD diet). The extract was expected to reduce the symptoms induced.

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