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Drugs affecting neurotransmitter synthesis can impact the adrenergic neuron and the synthesis of neurotransmitters. For example, α-methyltyrosine and carbidopa target specific enzymes involved in catecholamine synthesis. α-methyltyrosine inhibits the enzyme tyrosine hydroxylase, which converts tyrosine into dopamine. By blocking this enzyme, α-methyltyrosine reduces dopamine production and other catecholamines. Carbidopa, on the other hand, inhibits the enzyme dopa decarboxylase,...
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Updated: Oct 8, 2025

A Novel In Vitro Live-imaging Assay of Astrocyte-mediated Phagocytosis Using pH Indicator-conjugated Synaptosomes
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Ergothioneine in the brain.

Takahiro Ishimoto1, Yukio Kato1

  • 1Faculty of Pharmacy, Kanazawa University, Japan.

FEBS Letters
|January 3, 2022
PubMed
Summary

Ergothioneine (ERGO), a natural antioxidant, readily enters the brain via the OCTN1 transporter. ERGO shows promise for enhancing brain function, memory, and offering neuroprotection.

Area of Science:

  • Neuroscience
  • Nutritional Science
  • Pharmacology

Background:

  • Ergothioneine (ERGO) is a hydrophilic, food-derived antioxidant.
  • ERGO is absorbed from the gut and distributed to organs, including the brain.
  • Brain entry is facilitated by the ERGO-specific transporter OCTN1/SLC22A4.

Purpose of the Study:

  • To review the role of ERGO in brain function.
  • To discuss the potential therapeutic applications of ERGO for neurological disorders.

Main Methods:

  • Review of existing literature on ERGO and brain function.
  • Analysis of studies involving ERGO transport and its effects in animal models and humans.
  • In vitro investigations of ERGO's mechanisms of action.
Keywords:
antioxidantcognitive functiondepressionergothioneinemicroglianeural stem cellsneurodegenerative diseasesneurogenesisneuronstransporter

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Main Results:

  • Octn1 gene knockout mice lack brain ERGO, confirming OCTN1's crucial role.
  • Oral ERGO administration demonstrated antidepressant effects in mice.
  • ERGO enhanced memory in mice and humans and protected against neuronal injury and stress-induced sleep disturbance.

Conclusions:

  • ERGO's presence in the brain, mediated by OCTN1, suggests a significant role in brain function.
  • ERGO exhibits neuroprotective and cognitive-enhancing properties.
  • ERGO holds potential as a therapeutic agent for brain health and neurological conditions.