Ion channels as a therapeutic target for renal fibrosis

Peng Yan1, Ben Ke1, Xiangdong Fang1

  • 1Department of Nephrology, The Second Affiliated Hospital of Nanchang University, Nanchang, China.

Frontiers in Physiology
|October 24, 2022
PubMed

Insights

Renal ion channels are crucial in kidney fibrosis. Understanding their transport and signaling pathways offers new therapeutic targets for chronic kidney disease.

Area of Science:

  • Nephrology
  • Molecular Biology
  • Physiology

Background:

  • Renal ion channel dysfunction contributes to kidney disease progression and fibrosis.
  • Effective treatments for renal fibrosis are limited, necessitating novel therapeutic strategies.
  • Ion channels are integral to renal electrolyte balance and cellular signaling.

Purpose of the Study:

  • To review the role of various ion channels in renal fibrosis.
  • To elucidate the signaling pathways and mechanisms involving ion channels in kidney fibrosis.
  • To identify potential therapeutic targets for mitigating renal fibrosis.

Main Methods:

  • Literature review of studies on ion channels and renal fibrosis.
  • Analysis of signaling pathways mediated by chloride, calcium, and sodium channels.
  • Examination of the contribution of potassium channels to renal fibrosis.

Main Results:

  • Cystic fibrosis transmembrane conductance regulator (CFTR) and transmembrane Member 16A (TMEM16A) chloride channels influence renal fibrosis.
  • Calcium (Ca2+) handling channels, including CRAC, purinergic receptors, and TRP channels, are implicated in fibrosis.
  • Sodium (Na+) transport channels (ENaC, Na+, K+-ATPase, Na+-H+ exchangers) and potassium (K+) channels also play significant roles.

Conclusions:

  • Dissecting ion channel mechanisms in renal fibrosis can reveal new therapeutic avenues.
  • Targeting specific ion channels may offer strategies to slow renal fibrosis progression.
  • Further research into these channels could lead to novel treatments for chronic kidney disease.

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...
487
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,...
767
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...
454
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...
703
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,...
681
Transducer Mechanism: Enzyme-Linked Receptors01:27

Transducer Mechanism: Enzyme-Linked Receptors

Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
2.7K