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Related Experiment Video

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Measurement of Tissue Non-Heme Iron Content using a Bathophenanthroline-Based Colorimetric Assay
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Guidelines for quantifying iron overload.

John C Wood1

  • 1Division of Cardiology, Department of Pediatrics and Radiology, Children's Hospital of Los Angeles, Los Angeles, CA.

Hematology. American Society of Hematology. Education Program
|February 20, 2015
PubMed
Summary
This summary is machine-generated.

Iron overload is rising due to increased transfusions and survivorship. Magnetic Resonance Imaging (MRI) is recommended for annual liver iron concentration measurements and regular cardiac assessments in chronically transfused patients.

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Area of Science:

  • Hematology
  • Radiology
  • Medical Diagnostics

Background:

  • Primary and secondary iron overload are increasingly prevalent in the US.
  • Causes include immigration, increased transfusion therapy for sickle cell disease, and improved survival in hematologic malignancies.

Purpose of the Study:

  • To describe methods for estimating somatic iron burden.
  • To evaluate historical data, serological measures, and MRI for iron overload assessment.
  • To provide recommendations for monitoring iron levels in chronically transfused patients.

Main Methods:

  • Utilized historical data, serological markers (transferrin saturation, serum ferritin), and Magnetic Resonance Imaging (MRI).
  • Assessed transfusional volume for liver iron burden estimation.
  • Evaluated liver biopsy as a historical standard, noting its limitations.

Main Results:

  • Transfusional volume accurately estimates liver iron burden before chelation therapy.
  • Transferrin saturation indicates risk of extrahepatic iron deposition.
  • Serum ferritin trends are inexpensive guides but have high intersubject variability and may not reflect long-term iron load.
  • Annual liver iron concentration by MRI is recommended for chronically transfused patients.
  • Cardiac T2* MRI is recommended every 6-24 months to assess cardiac iron deposition.

Conclusions:

  • MRI is a valuable tool for assessing iron burden in liver and heart.
  • Annual liver iron concentration measurements by MRI are recommended for patients on chronic transfusion therapy.
  • Regular cardiac MRI is crucial for managing iron overload complications.