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Related Concept Videos

Urinary Tract Calculi III: Medical Management01:30

Urinary Tract Calculi III: Medical Management

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The diagnosis of renal calculi involves several imaging techniques, including non-contrast CT scans and ultrasound. These methods help visualize kidney stones, assess their size and location, and detect possible obstructions. Additionally, Measuring urine pH is useful for diagnosing specific stone types, such as struvite (alkaline pH) and uric acid stones (acidic pH). Cystine stones are primarily linked to cystinuria, a genetic condition. A urinalysis helps detect blood in the urine (hematuria)...
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Urinary Tract Calculi IV: Nutrition Therapy and Prevention01:27

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Management of renal calculi focuses on effective strategies like tailored nutrition and hydration therapy. Adjusting diet and fluid intake reduces stone formation and recurrence, making these interventions simple yet powerful in kidney stone prevention and management.Understanding Kidney StonesKidney stones form when calcium, oxalate, uric acid, and cystine concentrate and crystallize in urine. Factors contributing to their formation include genetic predisposition, certain medical conditions,...
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Urinary Tract Calculi I: Introduction01:28

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Renal calculi, or kidney stones, are solid deposits of minerals and salts formed inside the kidneys. In medical terminology, "calculus" refers to the stone itself, while "lithiasis" describes the process of stone formation. Depending on their location within the urinary system, these stones may be classified as either urolithiasis, when situated within the urinary tract, or nephrolithiasis, when located within the kidneys. Each term signifies the specific impact of the stone.Predisposition...
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Urinary Tract Calculi V: Nursing Management01:28

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AssessmentSubjective Data: Obtain a detailed health history, including any recent or chronic urinary tract infections, periods of immobilization, previous episodes of renal calculi, and medical conditions such as gout, benign prostatic hyperplasia, or hyperparathyroidism. Review the medication history for drugs that may influence stone formation, including allopurinol, analgesics, loop diuretics, or thiazide diuretics. Document the use of long-term indwelling catheters and any past surgical...
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Urinary Tract Calculi II: Pathophysiology and Clinical Manifestations01:26

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Renal calculi, commonly termed kidney stones, are crystalline solid masses that form in the kidneys but can occur at any point within the urinary system, encompassing the kidneys, ureters, bladder, and urethra.The pathophysiology of renal stones involves several key factors: supersaturation of the urine with stone-forming constituents, changes in urine pH, a decrease in urine volume, and the presence of substances that promote or inhibit stone formation.Supersaturation of Urine: This is the...
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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during...
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Related Experiment Video

Updated: Mar 24, 2026

Estimation of Urinary Nanocrystals in Humans using Calcium Fluorophore Labeling and Nanoparticle Tracking Analysis
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Monocyte Mitochondrial Function in Calcium Oxalate Stone Formers.

Jennifer Williams1, Ross P Holmes1, Dean G Assimos1

  • 1Department of Urology, University of Alabama at Birmingham, Birmingham, AL.

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PubMed
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Calcium oxalate (CaOx) stone formers exhibit reduced mitochondrial function in monocytes, a key immune cell. This impairment, along with increased inflammation markers, may contribute to kidney stone development.

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Area of Science:

  • Cellular Biology
  • Immunology
  • Nephrology

Background:

  • Kidney stones are a common ailment, with calcium oxalate (CaOx) stones being the most prevalent type.
  • The underlying mechanisms of CaOx stone formation are not fully understood, but immune cell dysfunction is increasingly implicated.
  • Mitochondrial dysfunction plays a critical role in cellular energy production and can impact immune cell activity.

Purpose of the Study:

  • To investigate potential alterations in mitochondrial function within circulating immune cells of individuals who form CaOx stones.
  • To compare the bioenergetic profiles of monocytes, lymphocytes, and platelets between CaOx stone formers and healthy controls.
  • To explore the relationship between mitochondrial function and inflammatory markers in CaOx stone formers.

Main Methods:

  • A pilot study involving 18 healthy subjects and 12 CaOx stone formers.
  • Isolation and assessment of mitochondrial bioenergetic function in monocytes, lymphocytes, and platelets using the Seahorse XF96 Analyzer.
  • Measurement of plasma interleukin-6 (IL-6) levels via enzyme-linked immunosorbent assay (ELISA).

Main Results:

  • CaOx stone formers showed significantly decreased mitochondrial maximal respiration and reserve capacity in monocytes compared to healthy subjects.
  • The bioenergetic health index was significantly lower in monocytes from CaOx stone formers.
  • Plasma IL-6 levels were significantly elevated in the CaOx stone-forming group, while lymphocyte and platelet mitochondrial function remained similar between groups.

Conclusions:

  • This pilot study indicates that individuals with CaOx kidney stones have impaired mitochondrial function specifically in their monocytes.
  • Elevated plasma IL-6 levels suggest an inflammatory component associated with CaOx stone formation.
  • These findings suggest a potential link between monocyte mitochondrial dysfunction, inflammation, and the pathogenesis of CaOx kidney stones, warranting further investigation in larger cohorts.