Protective Effect of Ergothioneine Against Stroke in Rodent Models

Area of Science:

• Neuroscience
• Pharmacology
• Biochemistry

Background:

• Ergothioneine (ET) is a natural antioxidant with demonstrated benefits for neurological functions.
• Previous research suggests ET's positive impact on cognition and depression in animal models.
• The neuroprotective potential of ET in the context of stroke warrants further investigation.

Purpose of the Study:

• To investigate the efficacy of ergothioneine (ET) in reducing brain damage following ischemic stroke in rodent models.
• To determine the dose-dependent effects and optimal administration routes for ET in stroke treatment.
• To evaluate the neuroprotective and behavioral effects of ET in post-stroke recovery.

Main Methods:

• Rodent models of ischemic stroke were utilized, including rats and mice.
• Ergothioneine (ET) was administered via intracerebroventricular (i.c.v.) infusion and intraperitoneal (i.p.) injection.
• Brain infarct volume was assessed using triphenyltetrazolium chloride (TTC) assay and MRI, with behavioral tests (pole test) also conducted.

Main Results:

• Intracerebroventricular (i.c.v.) ET infusion significantly reduced brain infarct volume in rats in a dose-dependent manner.
• Systemic (i.p.) administration of higher doses of ET (70-150 mg/kg) significantly decreased infarct volume in mice 7 days post-stroke.
• ET demonstrated neuroprotective effects as early as 1 day post-stroke, with significant behavioral improvements observed.

Conclusions:

• Ergothioneine (ET) exhibits significant neuroprotective effects against ischemic stroke in rodent models.
• Both direct (i.c.v.) and systemic (i.p.) administration of ET can reduce brain infarct volume and improve neurological function.
• ET represents a promising therapeutic agent for stroke treatment, warranting further clinical investigation.