Neuroprotection in Stroke-Focus on the Renin-Angiotensin System: A Systematic Review

Area of Science:

• Neuroscience
• Cardiovascular Research
• Pharmacology

Background:

• Stroke is a leading cause of adult disability, with hypertension as a major risk factor.
• The renin-angiotensin system plays a critical role in hypertension and stroke pathophysiology.
• Understanding the renin-angiotensin system's role in stroke is crucial for developing effective treatments.

Purpose of the Study:

• To review the current literature on the renin-angiotensin system's role in stroke neuroprotection.
• To elucidate the mechanisms by which the renin-angiotensin system exerts neuroprotective effects.
• To explore the potential of targeting the renin-angiotensin system for stroke management.

Main Methods:

• Literature review of studies investigating the renin-angiotensin system and stroke.
• Analysis of the effects of angiotensin on AT1, AT2, and Mas receptors.
• Examination of neuroprotective mechanisms including neuroregeneration, angiogenesis, and hypoxia resistance.

Main Results:

• The renin-angiotensin system influences stroke through AT1, AT2, and Mas receptors.
• Angiotensin demonstrates neuroprotective properties in stroke models.
• These neuroprotective effects appear independent of blood pressure reduction.
• Observed benefits include enhanced neuroregeneration, angiogenesis, and neuronal hypoxia resistance.

Conclusions:

• The renin-angiotensin system is a key player in stroke neuroprotection.
• Its mechanisms involve receptor-mediated pathways promoting tissue repair and resilience.
• Emerging agonist molecules targeting this system hold promise for future stroke therapies.