Modulating Cognitive Function with Antihypertensive Medications: a Comprehensive Systematic Review On FMRI Studies.

Abstract

Background: Hypertension (HTN) is a prevalent cardiovascular condition associated with cognitive impairments, including memory deficits and attention lapses. Understanding the neural mechanisms underlying HTN-related cognitive dysfunction is crucial for optimizing treatment strategies.

Method: A systematic review was conducted to explore the impact of antihypertensive medications on cognition, focusing on memory, attention, and emotion processing using functional magnetic resonance imaging (fMRI). Searches were performed in PubMed and Scopus up to March 10, 2024, with no language restrictions.

Results: A total of 108 articles were identified, of which 12 systematic reviews and meta-analyses met the inclusion criteria. Included studies investigated various antihypertensive drugs, including losartan, propranolol, spironolactone, and telmisartan, and their effects on cognitive processes. Losartan improved negative memory encoding and facilitated fear extinction via hippocampal and prefrontal modulation. Propranolol disrupted fear reconsolidation and reduced emotional memory retrieval, affecting the amygdala and hippocampus. Spironolactone prevented stress-induced memory shifts in the amygdala. Findings indicated distinct impacts of these medications on memory encoding, fear extinction, and stress-induced memory modulation, as evidenced by alterations in neural activity patterns observed on fMRI.

Conclusion: Antihypertensive medications, such as losartan and propranolol, demonstrate potential in modulating memory, fear-related memory reconsolidation, and stress-induced memory modulation, highlighting their therapeutic implications for conditions like posttraumatic stress disorder (PTSD) and anxiety disorders. This review underscores the importance of fMRI studies in elucidating the neural correlates of HTN-related cognitive impairments and optimizing treatment approaches.