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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...
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Pharmacokinetics in Geriatric Patients: Effect of Age on Drug Excretion

In geriatric patients, renal physiology undergoes significant changes, including diminished renal blood flow and a lower glomerular filtration rate (GFR), leading to alterations in medication clearance. Drugs such as aminoglycoside antibiotics, lithium, and digoxin, which rely on glomerular filtration for removal from the body, particularly impact pharmacokinetics. These drugs tend to have slower clearance rates in older adults, necessitating careful dosage considerations.Evaluation of renal...
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Type I Diabetes I: Introduction

Type 1 diabetes mellitus is a chronic metabolic disorder characterized by an absolute deficiency of insulin resulting from the autoimmune destruction of pancreatic β-cells. Although it can occur at any age, it is most commonly diagnosed in childhood, adolescence, or early adulthood. The loss of insulin production impairs cellular glucose uptake, resulting in persistent hyperglycemia and necessitating lifelong insulin therapy.Autoimmune Destruction of β-CellsThe hallmark of type 1 diabetes is an...
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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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Type I Diabetes III: Clinical Manifestations

Type 1 diabetes mellitus typically presents with rapid-onset symptoms due to the body’s inability to utilize glucose in the absence of insulin. Since insulin is required for glucose uptake into cells, its deficiency leads to hyperglycemia and cellular energy deprivation, resulting in characteristic clinical features.Polyuria and PolydipsiaOne of the earliest, most prominent symptoms is polyuria (excessive urination). When blood glucose concentrations rise above the renal threshold, the kidneys...
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Type II Diabetes Mellitus III: Clinical Manifestations and Diagnosis

Type 2 diabetes mellitus develops gradually and is often asymptomatic in early stages.Clinical ManifestationsWhen symptoms appear, they include fatigue, blurred vision, pruritus, delayed wound healing, and recurrent infections, particularly candidal infections. Peripheral neuropathy may present as numbness or tingling in the extremities. Classic hyperglycemia symptoms—polyuria, polydipsia, and polyphagia—are less common. Most patients are overweight and frequently have associated hypertension...

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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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Haptoglobin genotype and renal function decline in type 1 diabetes.

Tina Costacou1, Robert E Ferrell, Demetrius Ellis

  • 1Department of Epidemiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA. costacout@edc.pitt.edu

Diabetes
|September 2, 2009
PubMed
Summary

The haptoglobin (Hp) 2/2 genotype is linked to a higher risk of kidney function decline and end-stage renal disease (ESRD) in type 1 diabetes patients. This finding may offer new insights into diabetic kidney disease progression.

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A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
09:37

A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging

Published on: July 14, 2016

Area of Science:

  • Nephrology
  • Genetics
  • Diabetology

Background:

  • Haptoglobin (Hp) binds free hemoglobin, mitigating oxidative damage.
  • Oxidative stress is implicated in diabetic microvascular complications.
  • The role of Hp genotype in diabetic nephropathy requires further elucidation.

Purpose of the Study:

  • To investigate the association between haptoglobin (Hp) genotype and renal complications in type 1 diabetes.
  • To evaluate the relationship between Hp genotype and microalbuminuria, macroalbuminuria, end-stage renal disease (ESRD), and renal function decline.

Main Methods:

  • Analysis of participants from the Epidemiology of Diabetes Complications Study with available DNA.
  • Assessment of incidence for microalbuminuria, macroalbuminuria, ESRD, and renal function decline over 18 years.
  • Utilized multivariable Cox models to assess the impact of Hp genotype on renal outcomes.

Main Results:

  • The Hp genotype distribution was 43.4% for 2/2, 44.4% for 2/1, and 12.1% for 1/1.
  • No significant univariate differences in renal outcomes were observed across Hp genotypes.
  • The Hp 2/2 genotype showed a nearly twofold increased risk for estimated glomerular filtration rate (eGFR) decline and a 2.7-fold increased risk for ESRD compared to the Hp 1/1 genotype.

Conclusions:

  • Haptoglobin (Hp) genotype is not significantly associated with albuminuria in type 1 diabetes.
  • Hp genotype may be an independent predictor of early renal function decline and progression to ESRD.
  • Further research is needed to understand the mechanisms linking Hp genotype to renal disease progression in type 1 diabetes.