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Premature atherosclerosis in children with β-thalassemia major

Orhan Gursel1, Ahmet E Kurekci, Emre Tascilar

  • 1Department of Pediatric Hematology, Gulhane Military Medical Academy and Medical Faculty, Ankara, Turkey. ogursel@gata.edu.tr

Journal of Pediatric Hematology/Oncology
|October 31, 2012
PubMed

Insights

Children with beta-thalassemia major show early signs of atherosclerosis. Chronic hemolysis and iron overload contribute to premature cardiovascular disease risk, indicated by increased carotid intima-media thickness.

Area of Science:

  • Pediatric Hematology
  • Cardiovascular Research
  • Metabolic Disorders

Background:

  • Beta-thalassemia major is a genetic blood disorder characterized by chronic hemolysis and iron overload.
  • These conditions are associated with increased risk factors for cardiovascular disease.
  • Early detection of atherosclerosis is crucial for managing long-term complications.

Purpose of the Study:

  • To investigate the link between chronic hemolysis and iron burden with premature atherosclerosis in children with beta-thalassemia major.
  • To assess carotid intima-media thickness (IMT) and related biomarkers.
  • To evaluate lipid profiles, homocysteine, nitrate/nitrite, and chitotriosidase levels.

Main Methods:

  • A cohort of 31 children with beta-thalassemia major (ages 4-16) and 36 healthy controls were studied.
  • Comprehensive blood tests were performed, including lipid profiles, ferritin, homocysteine, nitrate/nitrite, and chitotriosidase.
  • Carotid intima-media thickness (IMT) was measured using ultrasound, alongside electrocardiographic and echocardiographic assessments.

Main Results:

  • Children with beta-thalassemia major exhibited significantly altered lipid profiles (reduced total, LDL, HDL; elevated VLDL).
  • Elevated chitotriosidase activity and increased carotid IMT were observed in the study group.
  • Reduced plasma nitrate/nitrite levels were found, with nitrate/nitrite being the sole significant predictor of carotid IMT.

Conclusions:

  • Subclinical atherosclerosis develops early in children with beta-thalassemia major.
  • These children face an elevated risk of premature atherosclerosis.
  • Monitoring IMT and related biomarkers is essential for early intervention.
Abstract

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