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Study of growth differentiation factor-15 in polytransfused children with β-thalassemia
Swati Meena1, Kusha Sharma1, Sunita Sharma1
1Department of Pathology, Lady Hardinge Medical College and Associated SSK and KSC Hospitals, New Delhi, India.
Insights
Growth differentiation factor-15 (GDF-15) is elevated in beta-thalassemia major patients and correlates with iron overload. GDF-15 regulates hepcidin, suggesting its use with hepcidin to monitor iron overload in these patients.
Area of Science:
- Hematology
- Iron Metabolism
- Molecular Biology
Background:
- Beta-thalassemia major (β-TM) is characterized by ineffective erythropoiesis, leading to increased Growth Differentiation Factor-15 (GDF-15).
- Elevated GDF-15 suppresses hepcidin, increasing gut iron absorption and causing iron overload.
- This study investigates GDF-15 levels in polytransfused β-TM patients and their relationship with iron markers.
Purpose of the Study:
- To assess serum GDF-15 levels in polytransfused β-TM patients.
- To determine the correlation between serum GDF-15, serum ferritin, and serum hepcidin.
- To explore the role of GDF-15 as a regulator of hepcidin in β-TM.
Main Methods:
- Study included 39 polytransfused β-TM children (5-17 years) and 33 healthy controls.
- Measurements included complete blood count, serum GDF-15, serum ferritin, and serum hepcidin.
- Statistical analysis was performed to compare groups and assess correlations.
Main Results:
- Serum GDF-15, hepcidin, and ferritin levels were significantly higher in β-TM patients compared to controls (P < 0.001).
- GDF-15 showed a positive correlation with blood transfusions (r=0.415, P=0.009) and serum ferritin (r=0.653, P=0).
- A significant negative correlation was observed between GDF-15 and serum hepcidin (r=-0.508, P=0.001).
Conclusions:
- GDF-15 plays a crucial role in regulating hepcidin in β-TM patients.
- Serum GDF-15 and hepcidin levels can serve as biomarkers for monitoring iron overload and its complications in β-TM.
- These findings highlight GDF-15 as a potential therapeutic target for managing iron overload in β-TM.
Background:
Ineffective erythropoiesis is a predominant feature in β-thalassemia major (β-TM), causing marked erythroid expansion leading to highly raised levels of growth differentiation factor-15 (GDF-15), which, in turn, suppresses hepcidin production in liver resulting in increased iron absorption from gut. We aim to study the serum GDF-15 in polytransfused β-TM patients and its correlation with serum ferritin and serum hepcidin.
Method:
Thirty-nine polytransfused β-TM children aged between 5 and 17 years and 33 age- and gender-matched healthy controls were enrolled in the study. Complete blood count, serum GDF-15, serum ferritin, and serum hepcidin were performed.
Results:
The mean serum GDF-15, serum hepcidin, and serum ferritin levels were 638.65 ± 306.96 pg/ml, 108.21 ± 191.30 ng/ml, and 2274.60 ± 1216.08 ng/ml, respectively, which were significantly higher than control group (P < 0.001, P = 0.003, P < 0.001, respectively). There was significant positive correlation of GDF-15 with blood transfusions (r = 0.415, P = 0.009), positive correlation with serum ferritin (r = 0.653, P = 0), and significant negative correlation with serum hepcidin (r = -0.508, P = 0.001).
Conclusion:
The findings of the present study suggest that GDF-15 is an important regulator of hepcidin in β-TM patients. GDF-15 and serum hepcidin together can be used to monitor iron overload and its related complications in such patients.
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