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Related Concept Videos

Glomerular Filtration01:15

Glomerular Filtration

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The filtration membrane in the renal system is a highly specialized structure essential for filtering blood. It consists of glomerular capillaries and podocytes, forming a selective barrier that permits the passage of water and small solutes while restricting most plasma proteins and blood cells.
Components of the Filtration Membrane
The filtration process involves three key layers: the glomerular endothelial cells, the basement membrane, and the podocyte-formed filtration slits.
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Renal Corpuscle01:20

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
Glomerulus: Structure and Function
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Glomerular Filtration Rate and its Regulation01:28

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The Glomerular Filtration Rate (GFR) is a measure of kidney function, reflecting the volume of filtrate formed per minute in the kidneys. On average, GFR is approximately 125 mL/min in males and 105 mL/min in females. Maintaining a relatively constant GFR is essential for the kidneys to effectively regulate body fluid homeostasis and maintain extracellular stability.
GFR regulation involves two primary intrinsic controls: the myogenic and tubuloglomerular feedback mechanisms.
The myogenic...
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Glomerular Filtration: Net Filtration Pressure01:26

Glomerular Filtration: Net Filtration Pressure

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Glomerular filtration, a key process in the kidneys, is regulated by three main pressures: Glomerular blood hydrostatic pressure (GBHP), Capsular hydrostatic pressure (CHP), and Blood colloid osmotic pressure (BCOP).
GBHP, with an average value of 55 mmHg, promotes filtration by pushing water and solutes through the filtration membrane. This is balanced by two opposing forces: CHP, a "back pressure" exerted against the filtration membrane by fluid already in the capsular space and renal...
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Correction: Jonsdotter et al. MerTK and the Role of Phagoptosis in Neonatal Hypoxia-Ischemia. <i>Cells</i> 2025, <i>14</i>, 1862.

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Related Experiment Video

Updated: Nov 1, 2025

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney
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Modeling the Glomerular Filtration Barrier and Intercellular Crosstalk.

Kerstin Ebefors1, Emelie Lassén2, Nanditha Anandakrishnan2

  • 1Department of Physiology, Institute of Neuroscience and Physiology, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.

Frontiers in Physiology
|June 21, 2021
PubMed
Summary

Researchers are developing advanced biomimetic systems, like glomerulus-on-a-chip and organoids, to better understand kidney function and create new therapies targeting the glomerular filtration barrier.

Keywords:
3D modelcrosstalkglomerular endothelial cellglomerular filtration barrierin vitropodocyte

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Area of Science:

  • Nephrology and Bioengineering
  • Renal physiology and pathology

Background:

  • The glomerulus filters blood and initiates urine production via a complex glomerular filtration barrier (GFB).
  • Mimicking the GFB *in vitro* is crucial but challenging for research and drug screening.

Purpose of the Study:

  • To review emerging technologies for recapitulating glomerular biology and GFB function *in vitro*.
  • To discuss challenges and opportunities in developing biomimetic glomerular models.

Main Methods:

  • Review of recent advancements in biomimetic technologies.
  • Focus on glomerulus-on-a-chip, 3D microfluidic models, and organoids.
  • Analysis of cellular signaling and GFB component interactions.

Main Results:

  • New technologies offer promising avenues for studying glomerular biology.
  • These models aim to improve understanding of GFB structure and function.
  • Advancements facilitate the development of GFB-targeted therapies.

Conclusions:

  • Emerging biomimetic systems like organoids and microfluidic chips are revolutionizing glomerular research.
  • These models provide unprecedented insights into glomerular filtration and disease.
  • Future research will leverage these systems for novel therapeutic strategies.