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Related Concept Videos

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The glomerular filtration rate (GFR) is a critical indicator of kidney health, reflecting how well the kidneys filter blood. Changes in GFR can signal potential kidney impairment, necessitating accurate measurement methods to monitor kidney function effectively.Various molecules can serve as markers for GFR measurement, with the ideal marker meeting several specific criteria. It must freely filter at the glomerulus, avoid reabsorption or secretion by the renal tubules, remain unmetabolized, not...
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Factors Affecting Renal Clearance: Renal Impairment01:17

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Renal dysfunction significantly impairs the renal clearance of drugs, leading to potential complications in drug therapy. Renal failure, which can be caused by various factors, poses a significant challenge in the elimination of drugs from the body.
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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.
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Renal Drug Excretion: Glomerular Filtration01:02

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Related Experiment Video

Updated: Feb 19, 2026

Using 2-Photon Microscopy to Quantify the Effects of Chronic Unilateral Ureteral Obstruction on Glomerular Processes
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Effect of time on remnant glomerular function

R Bregman1, M A Boim, N Schor

  • 1Seção de Nefrologia, Escola Paulista de Medicina, São Paulo, Brasil.

Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Medicas E Biologicas
|February 1, 1993
PubMed
Summary
This summary is machine-generated.

Kidney hypertrophy occurs early after renal mass reduction. Glomerular hypertension develops later, potentially leading to structural damage and declining glomerular function.

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Area of Science:

  • Nephrology
  • Renal Physiology
  • Pathophysiology

Background:

  • Remnant nephrons exhibit hypertrophy and hyperfiltration, but the timing and relationship remain unclear.
  • Understanding the temporal dynamics of these changes is crucial for managing chronic kidney disease.

Purpose of the Study:

  • To investigate the timeline of kidney hypertrophy and hemodynamic changes in remnant nephrons after renal mass ablation.
  • To establish the relationship between hypertrophy, hyperfiltration, and glomerular hypertension over time.

Main Methods:

  • Munich-Wistar rats underwent 5/6 renal mass ablation.
  • Kidney function and hemodynamics were assessed at 7, 30, and 60 days post-ablation.
  • Measurements included kidney weight, glomerular filtration rate (GFR), renal plasma flow, single-nephron GFR, and hydraulic glomerular capillary pressure.

Main Results:

  • Kidney weight increased early and then decreased. Glomerular filtration rate and renal plasma flow decreased significantly.
  • Single-nephron GFR and glomerular plasma flow increased by 30 days but decreased by 60 days.
  • Glomerular hypertension became statistically significant at 60 days, coinciding with a decrease in single-nephron GFR and ultrafiltration coefficient.

Conclusions:

  • Kidney hypertrophy precedes complete hemodynamic adaptation after renal mass reduction.
  • Glomerular hypertension emerges later and is associated with a decline in glomerular function and structural abnormalities.