The sympathetic nervous system alterations in human hypertension

Area of Science:

• Cardiovascular Physiology
• Hypertension Pathophysiology
• Neurocardiology

Background:

• The sympathetic nervous system (SNS) plays a critical role in regulating blood pressure.
• Alterations in SNS activity are implicated in the development and maintenance of hypertension.
• Understanding SNS mechanisms in human hypertension is crucial for effective treatment.

Purpose of the Study:

• To review the role of the sympathetic nervous system in human hypertension pathophysiology.
• To evaluate methods for assessing sympathetic activity in humans.
• To discuss therapeutic interventions targeting sympathetic deactivation.

Main Methods:

• Review of existing literature on sympathetic nervous system in human hypertension.
• Analysis of techniques for assessing sympathetic activity: heart rate, plasma norepinephrine, microneurography, norepinephrine spillover.
• Examination of evidence for neuroadrenergic factors in hypertension.
• Evaluation of interventions: carotid baroreceptor stimulation, renal nerve ablation.

Main Results:

• Sympathetic nervous system alterations are key in human hypertension.
• Specific assessment techniques have distinct strengths and limitations.
• Neuroadrenergic factors significantly promote and amplify hypertension.
• Obesity and renal disease are linked to increased sympathetic activity.
• Sympathetic deactivation therapies show potential for antihypertensive treatment.

Conclusions:

• The sympathetic nervous system is a critical factor in human hypertension.
• Accurate assessment of sympathetic activity is vital for diagnosis and treatment.
• Targeting sympathetic pathways offers a promising therapeutic strategy for hypertension management.