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Related Concept Videos

Nephrons01:10

Nephrons

The kidneys are intricate organs with millions of working units known as nephrons. Each nephron features two major structures: the renal corpuscle, which facilitates blood plasma filtration, and the renal tubule, which handles the glomerular filtrate. Blood supply is directly linked to the nephrons. The renal corpuscle consists of the glomerulus, a capillary network, and the Bowman's capsule, a double-walled epithelial structure that encases the glomerulus. The filtering of blood plasma happens...
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...
Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion01:22

Physiology of the Genitourinary System II: Tubular Reabsorption and Secretion

The kidneys maintain homeostasis through filtration, reabsorption, and secretion. Tubular reabsorption and secretion are crucial in forming urine and regulating electrolytes, water balance, and waste elimination.Tubular Reabsorption and Secretion ProcessesTubular reabsorption is the process that reclaims essential substances such as electrolytes, glucose, amino acids, and water from the glomerular filtrate back into the bloodstream. This is achieved through passive and active transport...
Renal Drug Excretion: Tubular Secretion01:28

Renal Drug Excretion: Tubular Secretion

Active tubular secretion is a robust, energy-demanding process that utilizes carrier systems to transport drugs into renal tubules. The active renal secretion systems include the organic anion transporter (OAT) for weak acids and the organic cation transporter (OCT) for weak bases. Structurally similar drugs can compete for the same transporter, potentially leading to drug accumulation and toxicity. However, this principle can be exploited therapeutically. One example is probenecid (Probalan),...
Drug Elimination by Renal Route: Tubular Secretion01:15

Drug Elimination by Renal Route: Tubular Secretion

Once the process of glomerular filtration is completed, blood carrying unfiltered drug molecules traverses through efferent arterioles and makes its way into the peritubular capillaries in the proximal tubule. A variety of carriers play a pivotal role in actively secreting drugs from these peritubular capillaries into the tubular fluid. The organic anion transporter transfers acidic drugs, against an electrochemical gradient, from the peritubular capillaries into the renal tubule cells and...
Renal Drug Excretion: Tubular Reabsorption01:25

Renal Drug Excretion: Tubular Reabsorption

Tubular reabsorption, a process occurring post-glomerular filtration of drugs in the renal tubule, is a critical determinant of drug half-life. During the process of renal excretion, as the glomerular filtrate progresses to the distal convoluted tubule (DCT), drugs that are highly permeable, lipophilic, and nonionized undergo passive reabsorption from the tubular fluid into the surrounding peritubular capillaries. This reabsorption process restricts their elimination through the kidneys. This...

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Implementing Patch Clamp and Live Fluorescence Microscopy to Monitor Functional Properties of Freshly Isolated PKD Epithelium
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TRP channels in kidney disease.

Yu-Juei Hsu1, Joost G J Hoenderop, René J M Bindels

  • 1Department of Physiology, 286 Physiology, Nijmegen Centre for Molecular Life Sciences, Radboud University Nijmegen, Medical Centre, P.O. Box 9101, NL-6500HB Nijmegen, The Netherlands.

Biochimica Et Biophysica Acta
|March 10, 2007
PubMed
Summary

Transient Receptor Potential (TRP) channels are crucial for kidney function and disease. This review details TRP channel distribution in the kidney and their roles in both normal physiology and various kidney disorders.

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Area of Science:

  • Physiology
  • Molecular Biology
  • Nephrology

Background:

  • Transient Receptor Potential (TRP) channels are a superfamily of cation-permeable channels.
  • TRP channels are involved in fundamental cellular functions and disease pathophysiology.
  • Many TRP channels are expressed in the kidney, suggesting roles in renal health and disease.

Purpose of the Study:

  • To review the distribution of TRP channels within the kidney.
  • To explore the roles of TRP channels in renal physiology.
  • To summarize the involvement of TRP channels in kidney diseases.

Main Methods:

  • Literature review of studies on TRP channel distribution and function in the kidney.
  • Analysis of evidence linking TRP channels to hereditary and acquired kidney disorders.

Main Results:

  • Specific TRP channels (TRPC6, TRPM6, TRPP2) are implicated in hereditary kidney diseases like focal segmental glomerulosclerosis, hypomagnesemia, and polycystic kidney disease.
  • TRPV5 and TRPV4 channels play significant roles in mineral balance, osmoregulation, and sodium/water homeostasis in the kidney.
  • TRP channels are involved in acquired kidney conditions including diabetes mellitus and acid-base disorders.

Conclusions:

  • TRP channels are integral to kidney function and are implicated in a wide range of renal pathologies.
  • Understanding TRP channel roles in the kidney is crucial for developing therapeutic strategies for kidney diseases.