Therapeutic Potential of Natural Compounds for Brain Ischemia-Reperfusion Injury

Area of Science:

• Neuroscience
• Pharmacology
• Biochemistry

Background:

• Brain ischemia-reperfusion (I/R) injury, common in stroke and cardiac arrest, causes significant secondary damage via oxidative stress, inflammation, and blood-brain barrier (BBB) breakdown.
• Current treatments lack approved neuroprotective agents for post-I/R injury, necessitating novel therapeutic strategies.
• Natural compounds are emerging as potential neuroprotectants due to their multimodal therapeutic actions.

Purpose of the Study:

• To review nine natural compounds with demonstrated efficacy in experimental models of I/R injury.
• To detail the chemical structures, pharmacokinetics, and mechanisms of action of these compounds.
• To discuss challenges and emerging strategies for the clinical translation of these natural agents.

Main Methods:

• Literature review focusing on natural compounds evaluated in preclinical I/R injury models.
• Analysis of compounds based on neuroprotective efficacy, mechanistic understanding, and translational potential.
• Examination of key signaling pathways including Nrf2, NF-κB, PI3K/Akt, and BDNF.

Main Results:

• Nine natural compounds (resveratrol, curcumin, quercetin, berberine, ginkgolide B, baicalin, naringin, fucoidan, astaxanthin) showed neuroprotective effects post-I/R injury.
• These compounds modulate critical pathways involved in oxidative stress, inflammation, and apoptosis.
• Identified challenges include bioavailability and BBB penetration, with potential solutions like nanoparticle delivery.

Conclusions:

• Natural compounds offer versatile therapeutic potential for brain I/R injury.
• Further preclinical optimization and biomarker-guided clinical trials are warranted.
• These agents represent a promising avenue for developing novel neuroprotective therapies.