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Related Concept Videos

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
Heart Failure II: Pathophysiology01:29

Heart Failure II: Pathophysiology

Systolic Heart Failure and Compensatory MechanismsSystolic heart failure (also termed HFrEF, Heart Failure with Reduced Ejection Fraction) is the most prevalent type of heart filure. It results in a decreased volume of blood being pumped from the ventricle. The aortic arch and carotid sinuses have baroreceptors that detect reduced blood pressure, triggering the sympathetic nervous system (SNS) to release epinephrine and norepinephrine. Initially, this response aims to boost heart rate and...
Sympathetic Activation01:16

Sympathetic Activation

The sympathetic division can influence tissues and organs by releasing norepinephrine at peripheral synapses and distributing epinephrine and norepinephrine through the bloodstream. In times of crisis or stress, sympathetic activation occurs, which is regulated by sympathetic centers in the hypothalamus. As a result, sympathetic activation prepares the body for physical exertion, rapid ATP production, and heightened alertness, allowing individuals to respond effectively to challenging or...
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
Hypertension II: Pathophysiology01:29

Hypertension II: Pathophysiology

Hypertension is a chronic condition in which the blood's force against artery walls is excessively high, posing risks such as heart disease. The condition's underlying mechanisms involve complex interactions among the cardiovascular, kidney, and autonomic nervous systems.Renin-Angiotensin-Aldosterone System (RAAS): This system significantly influences blood pressure regulation. When blood pressure decreases, the kidneys secrete renin. This enzyme transforms angiotensinogen, a plasma protein,...

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Related Experiment Video

Updated: Jun 30, 2026

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats
06:30

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats

Published on: September 11, 2018

Sympathetic activation in chronic renal failure.

Markus P Schlaich1, Flora Socratous, Sarah Hennebry

  • 1Neurovascular Hypertension & Kidney Disease Laboratory, Baker Heart Research Institute, P.O. Box 6492 St. Kilda Road Central, Melbourne VIC 8008, Australia. markus.schlaich@baker.edu.au

Journal of the American Society of Nephrology : JASN
|September 19, 2008
PubMed
Summary

Sympathetic overactivity contributes to kidney disease progression and cardiovascular events. Understanding its mechanisms in chronic kidney disease (CKD) is crucial for developing new treatments.

Related Experiment Videos

Last Updated: Jun 30, 2026

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats
06:30

Quantifying Acute Changes in Renal Sympathetic Nerve Activity in Response to Central Nervous System Manipulations in Anesthetized Rats

Published on: September 11, 2018

Area of Science:

  • Nephrology
  • Cardiology
  • Neuroscience

Background:

  • Sympathetic overactivity is implicated in chronic kidney disease (CKD) progression and cardiovascular events.
  • Mechanisms linking heightened sympathetic tone to CKD complications are not fully understood.

Purpose of the Study:

  • To review potential mechanisms of sympathetic activation in CKD.
  • To analyze the adverse consequences of sympathetic activation in CKD.
  • To explore therapeutic implications of targeting sympathetic pathways in CKD.

Main Methods:

  • Literature review of experimental and clinical studies.
  • Analysis of existing data on sympathetic nervous system function in CKD.
  • Synthesis of information on cardiovascular and renal outcomes related to sympathetic activity.

Main Results:

  • Accumulating evidence suggests a significant role for sympathetic activation in CKD.
  • Sympathetic overactivity contributes to hypertension, cardiac arrhythmias, and heart failure progression in CKD patients.
  • The precise pathways driving sympathetic activation in CKD remain to be fully elucidated.

Conclusions:

  • Targeting sympathetic overactivity presents a potential therapeutic strategy for managing CKD and its cardiovascular complications.
  • Further research is needed to clarify the exact mechanisms of sympathetic activation in CKD to optimize treatment approaches.