Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

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...
Dialysis01:15

Dialysis

Dialysis is a diffusion-based purification process that separates analyte molecules from a complex matrix. This is accomplished by allowing molecules in the solution to pass through a semipermeable membrane into a liquid on the other side. The membrane is usually made of cellulose acetate or cellulose nitrate, and the second liquid must be miscible with the solution. Ions (e.g., chloride or sodium) or organic molecules (e.g., glucose) can pass through the membrane pores, which generally have...
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...
Glomerular Filtration01:15

Glomerular Filtration

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.
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of fluid...
Nephrotic Syndrome II : Assessment and Medical Management01:26

Nephrotic Syndrome II : Assessment and Medical Management

IntroductionNephrotic syndrome is a kidney disorder marked by excessive protein loss in the urine, leading to various systemic complications. This condition often results from damage to the glomeruli—the kidney's filtering units—causing proteinuria, low blood protein levels, and fluid retention. Understanding the assessment, diagnosis, and management of nephrotic syndrome is essential for effective treatment and prevention of further kidney damage.AssessmentPatient History: Document any history...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Integration of full divertor detachment with improved core confinement for tokamak fusion plasmas.

Nature communications·2021
Same author

Diagnosis and management of tropomyosin receptor kinase (TRK) fusion sarcomas: expert recommendations from the World Sarcoma Network.

Annals of oncology : official journal of the European Society for Medical Oncology·2020
Same author

First Evidence of Local E×B Drift in the Divertor Influencing the Structure and Stability of Confined Plasma near the Edge of Fusion Devices.

Physical review letters·2020
Same author

Estimating the performance of lithium beam measurements of current density and electron density in an H-mode pedestal.

The Review of scientific instruments·2018
Same author

Gender differences in doxorubicin pharmacology for subjects with chemosensitive cancers of young adulthood.

Cancer chemotherapy and pharmacology·2018
Same author

Human energy expenditure: advances in organ-tissue prediction models.

Obesity reviews : an official journal of the International Association for the Study of Obesity·2018
Same journal

Extracellular matrix reprogramming by the YAP/TAZ- TGF-ß2 axis drives immune exclusion in cholangiocarcinoma models.

The Journal of clinical investigation·2026
Same journal

Tumor cell-derived extracellular vesicles foster the immunosuppressive landscape of pancreatic cancer.

The Journal of clinical investigation·2026
Same journal

Julie Zikherman receives the ASCI/Marian W. Ropes, MD, Award.

The Journal of clinical investigation·2026
Same journal

Targeted degradation of MDM2 overcomes feedback regulation of p53 signaling in Merkel cell carcinoma models.

The Journal of clinical investigation·2026
Same journal

SGLT2 inhibitors enhance ketogenesis by acting as allosteric activators of the mitochondrial enzyme HMGCS2.

The Journal of clinical investigation·2026
Same journal

MDM2 degraders for Merkel cell carcinoma: round peg in a round hole.

The Journal of clinical investigation·2026
See all related articles

Related Experiment Video

Updated: Jun 6, 2026

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney
10:14

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney

Published on: November 1, 2018

Permselectivity in thin membrane nephropathy

D M Thomas1, G A Coles, D F Griffiths

  • 1Institute of Nephrology, University of Wales College of Medicine, Cardiff Royal Infirmary, Cardiff, United Kingdom.

The Journal of Clinical Investigation
|May 1, 1994
PubMed
Summary
This summary is machine-generated.

Patients with thin membrane nephropathy (TMN) show altered glomerular permselectivity, allowing larger molecules to pass through the kidney barrier. This finding challenges current understanding of kidney filtration in TMN.

More Related Videos

Highly Sensitive Measurement of Glomerular Permeability in Mice with Fluorescein Isothiocyanate-polysucrose 70
09:16

Highly Sensitive Measurement of Glomerular Permeability in Mice with Fluorescein Isothiocyanate-polysucrose 70

Published on: August 9, 2019

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway
07:15

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway

Published on: August 23, 2024

Related Experiment Videos

Last Updated: Jun 6, 2026

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney
10:14

An Efficient Sieving Method to Isolate Intact Glomeruli from Adult Rat Kidney

Published on: November 1, 2018

Highly Sensitive Measurement of Glomerular Permeability in Mice with Fluorescein Isothiocyanate-polysucrose 70
09:16

Highly Sensitive Measurement of Glomerular Permeability in Mice with Fluorescein Isothiocyanate-polysucrose 70

Published on: August 9, 2019

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway
07:15

Mechanism of Kemeng Fang's Inhibition of Podocyte Apoptosis in Rats with Membranous Nephropathy through the PI3K/AKT Signaling Pathway

Published on: August 23, 2024

Area of Science:

  • Nephrology
  • Renal Physiology
  • Glomerular Filtration

Background:

  • Thin membrane nephropathy (TMN) is a kidney condition characterized by a thinned glomerular basement membrane.
  • Glomerular permselectivity is crucial for preventing protein loss into urine.

Purpose of the Study:

  • To compare glomerular permselectivity in patients with thin membrane nephropathy (TMN) and healthy controls.
  • To investigate the filtration of neutral dextran molecules based on their size (Stokes radius).

Main Methods:

  • Compared fractional clearance of polydisperse neutral dextrans in 6 TMN patients and 10 healthy controls.
  • Assessed glomerular permselectivity using molecules with Stokes radius > 42 A.
  • Monitored renal hemodynamics and proteinuria levels.

Main Results:

  • TMN patients exhibited significantly increased fractional clearance of neutral molecules with Stokes radius > 42 A.
  • Despite minimal proteinuria, larger dextran molecules passed through the glomerular barrier more readily in TMN.
  • Normal renal hemodynamics were observed in TMN patients.

Conclusions:

  • Glomerular barrier in TMN demonstrates altered size selectivity, permitting passage of larger neutral molecules.
  • Conventional theories of glomerular size selectivity do not fully explain the observed permselectivity in TMN.
  • The findings suggest a potential need to revise current models of glomerular filtration in thin membrane nephropathy.