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Related Concept Videos

Chronic Kidney Disease I: Introduction01:25

Chronic Kidney Disease I: Introduction

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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...
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Chronic Kidney Disease III: Interprofessional Care01:28

Chronic Kidney Disease III: Interprofessional Care

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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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Chronic Kidney Disease II: Clinical Manifestations01:24

Chronic Kidney Disease II: Clinical Manifestations

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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...
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Acute Kidney Injury II: Pathophysiology01:29

Acute Kidney Injury II: Pathophysiology

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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...
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Chronic Kidney Disease IV: Nursing Management01:18

Chronic Kidney Disease IV: Nursing Management

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Nursing management is essential for preventing complications, maintaining stability, and improving patients' quality of life in chronic kidney disease (CKD). By using a structured approach, nurses help slow CKD progression and support effective patient care​.1. Comprehensive patient assessmentEffective management begins with nurses reviewing the patient’s medical history, and identifying key risk factors like diabetes, hypertension, and nephrotoxic drug use. Nurses assess signs of...
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Nephrons01:10

Nephrons

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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...
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Updated: Oct 24, 2025

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A generic crystallopathic model for chronic kidney disease progression.

Orson W Moe

    The Journal of Clinical Investigation
    |August 16, 2021
    PubMed
    Summary

    Chronic kidney disease (CKD) progression may be driven by calcium phosphate crystals in kidney tubules. These crystals activate inflammation and fibrosis, potentially leading to kidney function decline.

    Area of Science:

    • Nephrology
    • Molecular Biology
    • Pathology

    Background:

    • Chronic kidney disease (CKD) is a global epidemic with uniformly progressive decline in kidney function.
    • The progression of CKD often continues even when the initial cause is treated, suggesting self-perpetuating mechanisms.

    Purpose of the Study:

    • To propose a model explaining renal function demise in CKD through renal tubule luminal calcium phosphate crystallopathy.
    • To investigate the role of calcium phosphate crystals in triggering inflammation and fibrosis in kidney disease.

    Main Methods:

    • Development of a model of renal tubule luminal calcium phosphate crystallopathy.
    • Investigation of calcium phosphate crystal interaction with Toll-like receptor 4 (TLR4).
    • Analysis of crystal endocytosis at the brush border and subsequent cellular responses.

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    Main Results:

    • Calcium phosphate crystals were found to attach to TLR4, initiating an inflammatory and fibrotic response.
    • A theoretical phosphate concentration threshold in the proximal tubular lumen may trigger detrimental downstream effects.
    • This mechanism offers a potential explanation for progressive kidney function loss across various kidney diseases.

    Conclusions:

    • The proposed model of calcium phosphate crystallopathy provides a mechanism for progressive kidney function decline in CKD.
    • Targeting phosphate levels within the proximal tubular lumen may be a therapeutic strategy for managing CKD progression.
    • Further research is warranted to validate this model in human CKD patients.