Is the Brain an Early or Late Component of Essential Hypertension?

Area of Science:

• Neuroscience
• Cardiovascular Science
• Public Health

Background:

• Essential hypertension traditionally viewed as brain end-organ damage.
• Emerging evidence links prehypertension to early brain alterations.
• Childhood elevated blood pressure (BP) may precede cognitive and structural brain changes.

Purpose of the Study:

• Review the relationship between heightened BP and brain function/structure.
• Examine causative factors impacting brain function in hypertension development.
• Highlight potential benefits of early intervention for brain health.

Main Methods:

• Literature review of studies on BP, brain structure, cerebrovascular function, and cognition.
• Analysis of factors like sympathetic nervous system activation, endocrine, and inflammatory pathways.
• Synthesis of evidence on early-life BP effects on the brain.

Main Results:

• Increased prehypertensive BP levels correlate with deficits in cognitive function.
• Altered cerebral blood flow responsivity and brain volumes observed with elevated BP.
• White matter integrity is affected by heightened, prehypertensive BP levels, even in childhood.

Conclusions:

• Heightened BP, even prehypertension, impacts brain structure and function early in life.
• Sympathetic nervous system activation and related pathways are potential contributors.
• Early intervention strategies are crucial for both BP management and brain health preservation.