Related Experiment Video

Updated: Apr 10, 2026

Mesenteric Artery Contraction and Relaxation Studies Using Automated Wire Myography
07:51

Mesenteric Artery Contraction and Relaxation Studies Using Automated Wire Myography

Published on: September 22, 2011

29.7K

Protective effects of AT1-receptor blocker and CA antagonist combination on renal function in salt loaded

K Gjorgjievska1, D Zafirov1, M Jurhar-Pavlova2

  • 1Institute of Preclinical and Clinical Pharmacology with Toxicology, Medical Faculty, Skopje, R. Macedonia.

Prilozi (Makedonska Akademija Na Naukite I Umetnostite. Oddelenie Za Medicinski Nauki)
|June 17, 2015
PubMed

Insights

Excessive salt intake worsens kidney disease. Combination therapy with valsartan and amlodipine effectively controlled blood pressure and reduced kidney damage in salt-loaded rats.

Area of Science:

  • Nephrology
  • Cardiovascular Research
  • Pharmacology

Background:

  • Salt-sensitive hypertension is a key factor in chronic kidney disease progression.
  • Dietary salt intake significantly impacts renal function and blood pressure regulation.

Purpose of the Study:

  • To investigate the impact of excessive dietary salt on renal function in spontaneously hypertensive rats (SHR).
  • To evaluate the efficacy of combined valsartan and amlodipine therapy in managing blood pressure and renal parameters in salt-loaded SHR rats.

Main Methods:

  • 48 male SHR rats were divided into three groups: control, salt-loaded (1% NaCl solution), and salt-loaded treated with valsartan (10 mg/kg) and amlodipine (5 mg/kg).
  • Treatment duration was 12 weeks, monitoring systolic blood pressure, body weight, and renal function tests.

Main Results:

  • Salt loading significantly increased blood pressure, proteinuria, and decreased creatinine clearance in the SHR NaCl group.
  • The combined valsartan and amlodipine treatment effectively controlled systolic blood pressure and ameliorated renal damage compared to the salt-loaded group.

Conclusions:

  • Excessive dietary salt exacerbates hypertension and renal dysfunction in SHR rats.
  • Combination therapy with valsartan and amlodipine demonstrates a protective effect on renal function in salt-loaded hypertensive rats.

More Related Videos

Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta08:08

Two-photon Imaging of Intracellular Ca2+ Handling and Nitric Oxide Production in Endothelial and Smooth Muscle Cells of an Isolated Rat Aorta

Published on: June 10, 2015

11.9K
Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats10:28

Evaluation of Vascular Control Mechanisms Utilizing Video Microscopy of Isolated Resistance Arteries of Rats

Published on: December 5, 2017

9.9K

Related Concept Videos

Antihypertensive Drugs: Angiotensin II Receptor Blockers01:30

Antihypertensive Drugs: Angiotensin II Receptor Blockers

In the renin-angiotensin-aldosterone system, a hormone called angiotensin II plays a crucial role. It binds to the AT1 receptors in vascular smooth muscles coupled with Gq proteins. The activation of these receptors activates an enzyme called phospholipase C, which releases two molecules: inositol trisphosphate and diacylglycerol. These molecules cause a chain reaction that leads to the phosphorylation of myosin light chains and promotes interaction between actin and myosin, leading to smooth...
3.1K
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...
1.5K
Antihypertensive Drugs: Potassium-Sparing Diuretics01:28

Antihypertensive Drugs: Potassium-Sparing Diuretics

Liddle syndrome is a genetically inherited form of hypertension characterized by the overactivity of epithelial sodium channels in the nephron, the functional unit of the kidney. This heightened activity leads to increased sodium reabsorption and excessive excretion of potassium. To counteract this, potassium-sparing diuretics such as amiloride are used. They function by blocking these sodium channels, thereby reducing the influx of sodium into the epithelial cells and minimizing the loss of...
2.7K
Antihypertensive Drugs: Direct Renin Inhibitors01:25

Antihypertensive Drugs: Direct Renin Inhibitors

The renin-angiotensin-aldosterone system (RAAS) is an intricate physiological pathway involving numerous enzymes and hormones, including renin, angiotensin-converting enzyme (ACE), angiotensin I and II, and aldosterone. Imbalances within this system increase the production of angiotensin II and aldosterone. Increased angiotensin II levels promote vasoconstriction and blood pressure elevation. Concurrently, higher aldosterone levels stimulate sodium and water reabsorption in the kidneys,...
1.8K
Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors01:30

Antihypertensive Drugs: Angiotensin-Converting Enzyme Inhibitors

Angiotensin-converting enzyme (ACE), a vital component of the renin-angiotensin-aldosterone system, is abundant in lung endothelial cells. ACE converts the inactive decapeptide, angiotensin I, into the active octapeptide, angiotensin II. This potent vasoconstrictor narrows blood vessels, increasing resistance to blood flow and elevating blood pressure. Angiotensin II also stimulates aldosterone production, encouraging kidney cells to reabsorb more sodium and water from urine, thereby increasing...
2.9K
Antihypertensive Drugs: Action of Calcium Channel Blockers01:18

Antihypertensive Drugs: Action of Calcium Channel Blockers

Calcium ions are essential to contract smooth muscle cells in blood vessels. They enter these cells through voltage-dependent calcium channels, specifically L-type calcium channels in the cell membrane. These L-type calcium channels are integral to the excitation-contraction coupling process in smooth muscle. When a stimulus is received by smooth muscle cells, their membrane depolarizes. This alteration in membrane potential instigates the opening of L-type calcium channels. As a result,...
2.3K