Related Experiment Video
Updated: Apr 18, 2026
07:49
Molecular Analysis of Endothelial-mesenchymal Transition Induced by Transforming Growth Factor-β Signaling
Published on: August 3, 2018
11.9K
Transforming growth factor beta1 and aldosterone
Kota Matsuki1, Catherine K Hathaway, Albert S Chang
1Department of Pathology and Laboratory Medicine, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Current Opinion in Nephrology and Hypertension
|January 15, 2015
Summary
Transforming growth factor beta1 (TGFbeta1) counteracts aldosterone, suppressing its production and impacting fluid balance. This TGFbeta1 signaling pathway offers potential new therapeutic targets for hypertension.
Area of Science:
- Endocrinology
- Nephrology
- Cardiovascular Medicine
Background:
- Renin-angiotensin-aldosterone system (RAAS) blockade treats hypertension and diabetes complications.
- Transforming growth factor beta1 (TGFbeta1) induction by RAAS components contributes to cardiovascular-renal changes.
- The role of TGFbeta1 in preventing these complications remains debated.
Purpose of the Study:
- To review recent findings on TGFbeta1's role in fluid homeostasis.
- To elucidate the relationship between TGFbeta1 and aldosterone.
- To investigate TGFbeta1 as a potential therapeutic target.
Main Methods:
- Review of recent scientific literature.
- Generation of genetically modified mice with varying TGFbeta1 mRNA expression levels (10-300% of normal).
- Analysis of blood pressure, plasma volume, and urinary excretion in these mice.
Main Results:
- TGFbeta1 suppresses aldosterone production and renal sodium reabsorption.
- TGFbeta1 negatively regulates blood pressure and plasma volume.
- A 10% TGFbeta1 hypomorph model exhibited primary aldosteronism with fluid and electrolyte retention.
Conclusions:
- TGFbeta signaling acts as a counterregulatory system to aldosterone.
- Understanding TGFbeta1's suppressive effects on adrenal and renal function can inform primary aldosteronism research.
- Novel therapeutic strategies for hypertension may emerge from this research.
Related Concept Videos
01:16TGF - β Signaling Pathway
11.1K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
11.1K
01:17Antihypertensive Drugs: Action of β1 Blockers
2.3K
β1-receptors are primarily located in the heart and kidneys. In cardiac myocytes, these receptors interact with neurotransmitters released by the sympathetic nervous system during heightened activity or danger. As a result, β1-receptors get activated, initiating a series of biochemical processes. Excessive activation of beta receptors due to chronic stress can abnormally increase heart rate and contractility, resulting in high blood pressure or hypertension. To counteract this,...
2.3K
01:31Hormones of the Adrenal Glands
7.0K
Adrenal hormones play a pivotal role in maintaining the body's electrolyte balance and orchestrating responses to stress, showcasing the intricate functions of the adrenal cortex and medulla.
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
The adrenal cortex, a powerhouse of hormone synthesis, generates over two dozen corticosteroid hormones. The zona glomerulosa produces mineralocorticoids, exemplified by aldosterone, influencing the electrolyte composition of body fluids. The synthesis of glucocorticoids such as cortisol and...
7.0K
01:33Hormonal Regulation
37.5K
The renin-aldosterone system is an endocrine system which guides the renal absorption of water and electrolytes, thus managing blood pressure and osmoregulation. Activation of the system begins in the kidneys with a small cluster of cells adjacent to the afferent and efferent blood vessels of the renal corpuscle. As the nephrons are filtering blood, juxtaglomerular cells monitor blood pressure. If they detect a decrease in pressure, they release the hormone renin into the bloodstream.
37.5K
01:30Antihypertensive Drugs: Angiotensin II Receptor Blockers
3.1K
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
01:17Hormonal Regulation of Blood Pressure
9.3K
Endocrinal or hormonal intervention in the cardiovascular system is predominantly exerted by the catecholamines - epinephrine and norepinephrine, as well as a slew of hormones that interact with renal function to modulate blood volume.
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
Epinephrine and Norepinephrine
The adrenal medulla releases epinephrine and norepinephrine, catecholamines that enhance and extend the sympathetic or "fight or flight" physiological response. These hormones escalate heart rate and the force of contraction...
9.3K