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A Semi-Automated and Reproducible Biological-Based Method to Quantify Calcium Deposition In Vitro
Published on: June 2, 2022
Metal deposition in calcific uremic arteriolopathy
Lavanya Amuluru1, Whitney High, Kim M Hiatt
1Division of Nephrology, University of Arkansas for Medical Sciences, 4301 W.Markham St. #501, Little Rock, AR 72205, USA. sswaminathan@uams.edu
Journal of the American Academy of Dermatology
|May 2, 2009
Summary
Tissue analysis reveals increased iron and aluminum in calcific uremic arteriolopathy (CUA), a severe kidney disease complication. Gadolinium was also detected, suggesting metal deposition may play a role in human CUA.
Area of Science:
- Nephrology
- Dermatopathology
- Toxicology
Background:
- Calcific uremic arteriolopathy (CUA) is a critical and often fatal condition impacting patients with end-stage renal disease.
- While animal research suggests a role for metals in CUA development, human tissue metal accumulation remains unexamined.
Purpose of the Study:
- To investigate and quantify metal deposition in human CUA tissue.
- To explore the potential link between metal exposure, particularly gadolinium, and CUA pathogenesis.
Main Methods:
- Histopathological analysis of twelve CUA skin biopsy specimens.
- Comparison with five control skin biopsy specimens from chronic kidney disease patients without CUA, some exposed to gadolinium contrast.
- Inductively coupled mass spectrometry used for quantifying iron, aluminum, and gadolinium in lesional skin.
Main Results:
- Seven CUA patients had prior gadolinium-based contrast exposure; three also had nephrogenic systemic fibrosis.
- Significantly elevated levels of iron (P = .03) and aluminum (P = .0002) were found in CUA specimens compared to controls.
- Substantial gadolinium presence was detected in multiple CUA biopsy samples.
Conclusions:
- Increased tissue iron and aluminum content is associated with CUA.
- Gadolinium deposition is present in some CUA cases, warranting further investigation.
- Findings suggest metal deposition should be considered in the pathogenesis of human CUA, supported by prior animal studies.
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