Related Experiment Video
Updated: Jun 19, 2026
09:43
Analyses of Proteinuria, Renal Infiltration of Leukocytes, and Renal Deposition of Proteins in Lupus-prone MRL/lpr Mice
Published on: June 8, 2022
AN ELECTROPHORETIC STUDY OF NEPHROTIC SERA AND URINE
1Laboratories of The Rockefeller Institute for Medical Research.
The Journal of Experimental Medicine
|October 30, 2009
Summary
Electrophoresis revealed significant serum protein differences in lipoid nephrosis, with lower albumin and higher globulin levels. A labile lipoprotein was identified as a major component of beta globulin in nephrotic patients.
Area of Science:
- Biochemistry
- Nephrology
- Clinical Chemistry
Background:
- Lipoid nephrosis is a kidney disorder characterized by protein leakage.
- Understanding serum and urine protein profiles is crucial for diagnosing and managing kidney diseases.
Purpose of the Study:
- To analyze the electrophoretic patterns of serum and urine proteins in patients with lipoid nephrosis.
- To compare these patterns with those of normal serum to identify specific biochemical alterations.
Main Methods:
- Serum and urine samples from two lipoid nephrosis patients were analyzed using electrophoresis.
- Electrophoretic patterns were compared to a standard normal serum pattern.
- Nephrotic sera were further processed via centrifugation and ether extraction to analyze specific protein fractions.
Main Results:
- Nephrotic sera showed marked deviations from normal patterns, indicating decreased albumin and increased globulin concentrations.
- Ether extraction revealed that a significant portion of the beta globulin fraction in nephrotic sera is a labile lipoprotein.
- Nephrotic urine protein patterns shared similarities with normal serum but exhibited distinct differences.
Conclusions:
- Electrophoretic analysis effectively highlights the distinct protein abnormalities in lipoid nephrosis.
- The identification of a labile lipoprotein in beta globulin offers insights into the pathogenesis of lipoid nephrosis.
- Further research into urinary protein composition in nephrotic syndrome is warranted.
Related Concept Videos
01:26Nephrotic 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...
01:24Nephrotic 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...
01:22Two-dimensional Gel Electrophoresis
Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such as cells...
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such as cells...
01:24Nephrotic Syndrome III : Nursing Management
Nursing management for nephrotic syndrome adapts as the disease progresses, with strategies evolving to address advancing symptoms and complications.Early-Stage Management In the early stages, nursing interventions for nephrotic syndrome resemble those used in managing acute glomerulonephritis, focusing on symptom monitoring, fluid balance, and managing mild to moderate edema.Vital Signs: Regularly monitor blood pressure, pulse, respiratory rate, and temperature to promptly identify...
01:24Serum Studies: Renal Function Tests
Renal function tests are crucial for assessing kidney health, monitoring disease progression, and evaluating the kidneys' efficiency in waste elimination, fluid balance, and electrolyte regulation. These tests offer critical insights into kidney function, even though routine measurements may appear normal until there is a significant decline in the glomerular filtration rate or GFR. Typically, signs of kidney impairment only become evident when the GFR falls to about 50% of its normal level.
01:29Urine Studies I: Urinalysis
Urinalysis is a widely used diagnostic test that analyzes urine's physical, chemical, and microscopic characteristics. Healthcare providers use it to detect and monitor various health conditions, including renal disease, urinary tract infections (UTIs), diabetes, and metabolic or systemic disorders.Components of UrinalysisUrinalysis consists of three primary components: physical, chemical, and microscopic examination. Each provides unique insights into the urine sample and, by extension, the...