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Related Concept Videos

Diabetic Nephropathy01:28

Diabetic Nephropathy

Definition Diabetic nephropathy is a chronic kidney complication that results from prolonged hyperglycemia.Prevalence It is the most common cause of chronic kidney disease (CKD) and end-stage renal disease (ESRD) worldwide, affecting up to half of individuals with diabetes.Pathophysiology • Sustained hyperglycemia triggers multiple hemodynamic and metabolic changes in the kidney. • Early in the disease, increased renal blood flow and glomerular hyperfiltration occur due to afferent arteriolar...
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...
Diabetes Insipidus II: Pathophysiology01:22

Diabetes Insipidus II: Pathophysiology

Normally, water balance is maintained through three interconnected mechanisms: the hypothalamic thirst center, the synthesis and release of antidiuretic hormone (ADH, or vasopressin), and the kidneys' responsiveness to this hormone. ADH is synthesized in the hypothalamus, released from the posterior pituitary, and acts on the distal nephron, allowing water reabsorption and concentrated urine production.Diabetes Insipidus and Its TypesIn diabetes insipidus (DI), this regulatory system is...
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...
Renal Corpuscle01:20

Renal Corpuscle

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
The glomerulus is a tiny, intricate network of capillaries located at the beginning of the nephron. It's enveloped by the Bowman's capsule and receives its blood supply from an afferent arteriole, which divides into numerous capillaries...
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...

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Related Experiment Video

Updated: May 25, 2026

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice

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Hyperfiltration in type 1 diabetes: does it exist and does it matter for nephropathy?

M C Thomas1, J L Moran, V Harjutsalo

  • 1Baker IDI Heart and Diabetes Institute, PO Box 6492, Melbourne, VIC 8008, Australia. Merlin.Thomas@bakeridi.edu.au

Diabetologia
|February 11, 2012
PubMed
Summary

Hyperfiltration does not predict microalbuminuria in type 1 diabetes. Renal function in diabetic patients without kidney disease is similar to the general population, challenging previous assumptions.

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Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
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A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice
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A High-throughput Method for Measurement of Glomerular Filtration Rate in Conscious Mice

Published on: May 10, 2013

Area of Science:

  • Nephrology
  • Diabetology
  • Renal Physiology

Background:

  • Hyperfiltration is traditionally linked to microalbuminuria and nephropathy in type 1 diabetes.
  • Recent research has cast doubt on this established association.
  • Conflicting evidence necessitates further investigation into this relationship.

Purpose of the Study:

  • To investigate the association between hyperfiltration and the progression to microalbuminuria in adults with type 1 diabetes.
  • To compare estimated glomerular filtration rates (eGFR) in type 1 diabetic patients with those in the general Finnish population.
  • To clarify the role of eGFR in predicting diabetic kidney disease progression.

Main Methods:

  • A cohort study of 2,318 adults with type 1 diabetes was conducted.
  • Estimated GFR was assessed using creatinine- and cystatin-based formulas.
  • Comparisons were made with 6,247 individuals from the general population using age- and sex-specific z scores.

Main Results:

  • The distribution of eGFR in type 1 diabetic patients with normoalbuminuria did not differ significantly from the general population.
  • Higher eGFR or hyperfiltration did not increase the likelihood of developing microalbuminuria over 5.2 years of follow-up.
  • These findings held true irrespective of the definition of hyperfiltration or the GFR estimation method used.

Conclusions:

  • Creatinine- or cystatin-based eGFR estimates do not reliably predict microalbuminuria development in type 1 diabetes.
  • Renal function in type 1 diabetic patients without kidney disease is comparable to the general population.
  • The study challenges the direct causal link between hyperfiltration and early diabetic kidney disease progression.