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Related Concept Videos

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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...
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Chronic kidney disease (CKD) requires collaborative and comprehensive management. CKD progresses through stages and can lead to end-stage kidney disease (ESKD) if untreated. Interprofessional collaboration and patient education are crucial, enabling patients to manage their health and improve their quality of life.Diagnostic approach for chronic kidney diseaseThe diagnosis of CKD primarily focuses on the glomerular filtration rate (GFR), which assesses kidney function by measuring how well...
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DefinitionDiabetic retinopathy is a microvascular complication of diabetes affecting the retinal blood vessels.Risk FactorsDiabetic retinopathy is present in almost all individuals with type 1 diabetes and more than 60% of those with type 2 diabetes after two decades of disease.The risk increases with poor glycemic control, hypertension, dyslipidemia, smoking, pregnancy, and puberty.Although cataracts and glaucoma are also more frequent in people with diabetes, retinopathy remains the leading...
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Related Experiment Video

Updated: Apr 17, 2026

Comparative Proteomic Analysis of Whole Kidney, Medulla, and Cortical Tubules in Diabetic Pathogenesis of Kidney Injury in Mice
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Renal C3 complement component: feed forward to diabetic kidney disease.

Katherine J Kelly1, Yunlong Liu, Jizhong Zhang

  • 1Department of Medicine, Indiana University School of Medicine, Indianapolis, Ind., USA.

American Journal of Nephrology
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Summary

Diabetic nephropathy accelerates kidney injury via complement system activation. This study reveals complement pathway involvement in diabetic kidney disease progression, highlighting potential therapeutic targets.

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Area of Science:

  • Nephrology
  • Immunology
  • Genomics

Background:

  • Diabetic nephropathy is a leading cause of end-stage renal disease.
  • Its epidemic proportions necessitate understanding underlying mechanisms.

Purpose of the Study:

  • To investigate the role of the complement system in diabetic nephropathy progression.
  • To identify molecular pathways involved in renal injury.

Main Methods:

  • Utilized comprehensive genomic profiling (RNAseq) in a ZS rat model of diabetic nephropathy.
  • Compared gene expression in diabetic rats with and without renal ischemia to lean controls.

Main Results:

  • Renal ischemia accelerated diabetic nephropathy, correlating with complement system activation (C3, C4, C5, C6, C8, C9).
  • Increased anaphylatoxin receptors (C3a, C5a) and classic pathway components (C1qa, C1qb, C1qc) were observed.
  • Key complement regulators (CD55, CD59) were attenuated, while complement proteins were found in renal tubules and glomeruli.

Conclusions:

  • Local complement system activation is a key mediator of renal injury in diabetic nephropathy.
  • Findings suggest the complement cascade as a therapeutic target for diabetic kidney disease.