Uric acid as a potential cue to screen for iron overload

Area of Science:

• Biochemistry
• Clinical Medicine
• Public Health

Background:

• Iron overload disorders, such as hemochromatosis, necessitate effective screening methods.
• Elevated iron stores can lead to significant health complications.
• Uric acid is being investigated as a potential biomarker for iron overload.

Purpose of the Study:

• To evaluate uric acid as a potential indicator for iron overload.
• To determine the association between uric acid levels and iron status.

Main Methods:

• Analysis of adults aged 20+ from the National Health and Nutrition Examination Survey (1999-2002).
• Logistic regression models were used to assess the relationship between uric acid, ferritin, elevated liver enzymes, and proteinuria.
• Analyses controlled for age, sex, race/ethnicity, liver/kidney conditions, and alcohol consumption.

Main Results:

• Individuals with high uric acid showed significantly higher ferritin levels compared to those with low uric acid (20.7% vs. 8.8%, P<.001).
• Combined elevated uric acid and ferritin levels were associated with significantly higher liver enzymes.
• High uric acid and high ferritin increased the likelihood of proteinuria (OR, 2.66; 95% CI, 1.82-3.91).

Conclusions:

• Elevated uric acid levels are associated with elevated ferritin levels.
• Uric acid may serve as a valuable risk stratification variable for identifying iron overload and hemochromatosis.
• Further research can explore the clinical utility of uric acid in iron overload screening protocols.