In plain language
In 25 radiation-exposed healthcare workers with low recorded doses, DNA damage markers did not rise with dose and gamma-H2AX matched 21 unexposed colleagues, although micronucleus frequency was higher. This small biomarker study does not establish health outcomes.
At a glance
- Type of study
- Original research, Laboratory or biomarker study
- Size
- n = 46 participants (25 radiation-exposed healthcare workers, 21 controls)
- Summary based on
- the abstract
What it found
Micronucleus frequency was significantly higher in radiation-exposed healthcare workers than in controls.
Key figures: 0.005 ± 0.002 vs 0.001 ± 0.001 (p < 0.0001)
Gamma-H2AX foci frequency did not differ between exposed healthcare workers and controls.
Key figures: 0.04 ± 0.01 vs 0.05 ± 0.01 (p > 0.05)
Biomarkers correlated only weakly with cumulative registered thermoluminescent dosimeter (TLD) dose.
Key figures: γ-H2AX R2=0.0123; MN R2= 0.0011; FDXR R2= 0.0006
FDXR expression was modestly higher in exposed healthcare workers.
Key figures: 7% increase
Cumulative registered doses among exposed workers were low.
Key figures: 0 to 21 mSv, mean 3.65 mSv
Limits to keep in mind
Small cross-sectional biomarker study (25 exposed, 21 controls) with low cumulative doses and unspecified occupational roles, setting and country. TLD records may not reflect true dose, and the authors note assay sensitivity may limit detection of effects.
Related research summaries
- Occupational radiation exposure indicated by increased chromosomal damage in lymphocytes of orthopaedic surgeons in Japan (2026, Laboratory or biomarker study)
- Radiation-Induced DNA Damage in Operators Performing Endovascular Aortic Repair (2017, Laboratory or biomarker study)
- Rationale and design of the NO-PARTY trial: Near-zero fluoroscopic exposure during catheter ablation of supraventricular arrhythmias in young patients (2012, Randomized trial)
- Occupational Protection in Interventional Radiology. A Joint Guideline of the Cardiovascular and Interventional Radiological Society of Europe and the Society of Interventional Radiology (2026, Guideline or consensus statement)
- Occupational Radiation Exposure and Thyroid Nodules in Healthcare Workers: A Review (2025, Narrative review)
How this summary was made
ORSIF prepared this summary with AI assistance from the abstract of the paper. A program then checked that the passage supporting each finding appears word for word in that source. A person has not yet reviewed each summary, so read the original before relying on a number. ORSIF summarizes research and does not endorse any product or company. Report a problem with this summary.
Prepared November 3, 2026.