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Published on: June 7, 2016
Brain renin-angiotensin system in the pathophysiology of cardiovascular diseases
Gianna Huber1, Franziska Schuster1, Walter Raasch2
1Institute of Experimental and Clinical Pharmacology and Toxicology, University of Lübeck, Germany; CBBM (Center of Brain, Behavior and Metabolism), Lübeck, Germany.
Insights
Hypertension, a key risk factor for cardiovascular diseases (CVD), involves the brain renin-angiotensin system (RAS). This review explores brain RAS peptides and their role in blood pressure regulation, identifying potential hypertension drug targets.
Area of Science:
- Neuroscience
- Cardiovascular Physiology
- Pharmacology
Background:
- Cardiovascular diseases (CVD) are a leading global cause of death.
- Hypertension is a major risk factor for CVD.
- The peripheral renin-angiotensin system (RAS) regulates blood pressure, but its central role in the brain is less understood.
Purpose of the Study:
- To review the role of brain angiotensin peptides in central cardiovascular control.
- To elucidate the interactions between brain RAS components.
- To identify potential central drug targets for hypertension treatment.
Main Methods:
- Literature review focusing on central nervous system (CNS) RAS.
- Analysis of brain angiotensin peptide interactions.
- Evaluation of CNS mechanisms in cardiovascular regulation.
Main Results:
- The brain RAS is complex and regionally specific.
- Brain and peripheral RAS are interconnected via circumventricular organs (CVOs).
- Brain angiotensin peptides significantly influence central cardiovascular control.
Conclusions:
- The central RAS is a critical regulator of blood pressure.
- Understanding brain RAS pathways offers novel therapeutic strategies for hypertension.
- Targeting brain RAS components may provide effective CVD prevention and treatment.
Abstract:
Cardiovascular diseases (CVD) are among the main causes of death globally and in this context hypertension represents one of the key risk factors for developing a CVD. It is well established that the peripheral renin-angiotensin system (RAS) plays an important role in regulating blood pressure (BP). All components of the classic RAS can also be found in the brain but, in contrast to the peripheral RAS, how the endogenous RAS is involved in modulating cardiovascular effects in the brain is not fully understood yet. It is a complex system that may work differently in diverse areas of the brain and is linked to the peripheral system by the circumventricular organs (CVO), which do not have a blood brain barrier (BBB). In this review, we focus on the brain angiotensin peptides, their interactions with each other, and the consequences in the central nervous system (CNS) concerning cardiovascular control. Additionally, we present potential drug targets in the brain RAS for the treatment of hypertension.
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