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  1. Article

    Open Access

    Ergothioneine promotes longevity and healthy aging in male mice

    Healthy aging has emerged as a crucial issue with the increase in the geriatric population worldwide. Food-derived sulfur-containing amino acid ergothioneine (ERGO) is a potential dietary supplement, which exh...

    Makoto Katsube, Takahiro Ishimoto, Yutaro Fukushima, Asuka Kagami in GeroScience (2024)

  2. Article

    Open Access

    TrkB phosphorylation in serum extracellular vesicles correlates with cognitive function enhanced by ergothioneine in humans

    Oral administration of the food-derived antioxidant amino acid ergothioneine (ERGO) results in its efficient distribution in the brain and enhances cognitive function. However, effect of ERGO deficiency on cog...

    Takahiro Ishimoto, Reiya Yamashita, Ruri Matsumoto in npj Science of Food (2024)

  3. No Access

    Chapter

    Regulation of Neurogenesis by Organic Cation Transporters: Potential Therapeutic Implications

    Neurogenesis is the process by which new neurons are generated from neural stem cells (NSCs), which are cells that have the ability to proliferate and differentiate into neurons, astrocytes, and oligodendrocyt...

    Takahiro Ishimoto, Yukio Kato in Organic Cation Transporters in the Central Nervous System (2021)

  4. No Access

    Article

    Homostachydrine is a Xenobiotic Substrate of OCTN1/SLC22A4 and Potentially Sensitizes Pentylenetetrazole-Induced Seizures in Mice

    Understanding of the underlying mechanism of epilepsy is desired since some patients fail to control their seizures. The carnitine/organic cation transporter OCTN1/SLC22A4 is expressed in brain neurons and tra...

    Misa Nishiyama, Noritaka Nakamichi, Tomoyuki Yoshimura in Neurochemical Research (2020)

  5. No Access

    Article

    Carnitine/Organic Cation Transporter OCTN1 Negatively Regulates Activation in Murine Cultured Microglial Cells

    Brain immune cells, i.e., microglia, play an important role in the maintenance of brain homeostasis, whereas chronic overactivation of microglia is involved in the development of various neurodegenerative diso...

    Takahiro Ishimoto, Noritaka Nakamichi, Hikari Nishijima in Neurochemical Research (2018)

  6. No Access

    Article

    A mutation in SLC22A4 encoding an organic cation transporter expressed in the cochlea strial endothelium causes human recessive non-syndromic hearing loss DFNB60

    The high prevalence/incidence of hearing loss (HL) in humans makes it the most common sensory defect. The majority of the cases are of genetic origin. Non-syndromic hereditary HL is extremely heterogeneous. Ge...

    Mariem Ben Said, M’hamed Grati, Takahiro Ishimoto, Bing Zou in Human Genetics (2016)

  7. Article

    Open Access

    Dipeptide species regulate p38MAPK–Smad3 signalling to maintain chronic myelogenous leukaemia stem cells

    Understanding the specific survival of the rare chronic myelogenous leukaemia (CML) stem cell population could provide a target for therapeutics aimed at eradicating these cells. However, little is known about...

    Kazuhito Naka, Yoshie Jomen, Kaori Ishihara, Junil Kim in Nature Communications (2015)

  8. No Access

    Chapter and Conference Paper

    Nature and Consequences of Seizures Originating in the Brainstem

    Experimental studies suggest that the brainstem, particularly the brainstem reticular formation (RF), is involved in the secondary generalization of partial seizures originating in the forebrain. Electrolytic ...

    Shigeru Chiba, Takahiro Ishimoto, Yuji Ishimaru, Yoshiyuki Tamura in Kindling 6 (2005)