Related Experiment Video
Updated: Jul 20, 2026
09:02
A Large Animal Model for Acute Kidney Injury by Temporary Bilateral Renal Artery Occlusion
Published on: February 2, 2021
Cellular and metabolic consequences of chronic ischemia on kidney function
1Division of Nephrology, University of California, Davis 95616, USA.
Seminars in Nephrology
|January 1, 1996
Summary
Chronic ischemic nephropathy, a cause of end-stage renal disease, lacks study on its cellular mechanisms. Further research into kidney ischemia pathophysiology may lead to new medical interventions.
Area of Science:
- Nephrology
- Renal Physiology
- Pathophysiology
Background:
- Chronic ischemic nephropathy accounts for 15% of end-stage renal disease, causing significant morbidity and costs.
- While acute renal failure and renovascular hypertension are studied, chronic ischemic kidney injury pathophysiology remains poorly understood.
- Existing data suggest angiotensin II is crucial for maintaining glomerular filtration rate in stenotic kidneys, with potential roles for nitric oxide and endothelin.
Purpose of the Study:
- To highlight the critical need for laboratory investigation into the cellular mechanisms of chronic ischemic kidney injury.
- To identify potential avenues for future research based on existing data from related conditions.
Main Methods:
- Review of existing literature on renovascular hypertension, acute renal ischemia, and toxic models of decreased blood flow (e.g., cyclosporine).
- Analysis of pathological studies indicating immunologic alterations in chronic ischemic nephropathy.
Main Results:
- Limited data exist on the specific cellular mechanisms driving chronic ischemic kidney injury.
- Insights can be drawn from studies on acute tubular injury, chronic hypoperfusion models, and immunopathology.
Conclusions:
- Understanding the cellular mechanisms of chronic renal ischemia is a vital area for laboratory research.
- Such research may pave the way for medical interventions for patients with ischemic nephropathy unsuitable for surgery.
Related Concept Videos
01:22Acute Kidney Injury I: Introduction
Introduction:Acute Kidney Injury (AKI) describes a swift decrease in kidney function occurring over hours to days, characterized by the kidneys' failure to remove waste products from the bloodstream. This leads to dangerous complications like metabolic acidosis, fluid overload, and electrolyte imbalances, such as hyperkalemia, which can cause life-threatening arrhythmias. AKI is common in both hospital and outpatient settings, often triggered by dehydration, sepsis, or exposure to nephrotoxic...
01:29Acute Kidney Injury II: Pathophysiology
Acute kidney injury (AKI) causes are categorized into three primary categories based on the location of the injury: prerenal, intrarenal (or intrinsic), and postrenal causes. This classification guides clinical management and illustrates how different pathways can impair kidney function.Etiology and Pathophysiology of Acute Kidney Injury1. Prerenal causesEtiology: Prerenal Acute Kidney Injury, the most common type, occurs when reduced blood flow to the kidneys decreases filtration capacity...
01:29Acute Kidney Injury III: Clinical Manifestations
Acute Kidney Injury (AKI) progresses through distinct clinical phases: the oliguric, diuretic, and recovery phases, each marked by unique manifestations and challenges.Oliguric Phase:The oliguric phase is the initial stage of AKI, typically lasting 10 to 14 days. This phase is marked by a significant reduction in urine output, usually less than 400 mL per day, indicating decreased kidney function. Fluid retention is a prominent feature, leading to symptoms such as edema, hypertension, and...
01:25Chronic Kidney Disease I: Introduction
Chronic Kidney Disease (CKD) arises when the kidneys progressively lose their ability to function, ultimately leading to end-stage renal disease. At this advanced stage, the kidneys can no longer filter waste or maintain essential body functions, requiring renal replacement therapy (RRT) through dialysis or a kidney transplant for survival.Early-stage chronic kidney disease and detection challengesIn CKD's early stages, symptoms often remain absent because healthy nephrons compensate for...
01:24Chronic Kidney Disease II: Clinical Manifestations
Chronic Kidney Disease (CKD) progressively impairs multiple body systems due to the accumulation of uremic toxins, which disrupt cellular functions across various organs.Neurologic symptomsNeurologic symptoms often arise early in CKD, as uremic toxin buildup drives changes in cognitive and motor functions. Patients frequently experience fatigue, headache, confusion, difficulty concentrating, and, in severe cases, seizures. Peripheral neuropathy commonly manifests as burning sensations in the...
01:28Diabetic 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...