Vasculopathy among children and adolescents with sickle cell disease: the crosstalk with annexin A1, vitamin D, and myocardial iron overload

Mohsen Saleh ElAlfy, Eman Abdel Rahman Ismail, Sara Mostafa Makkeyah, Ahmed Samir, Dina Husseiny Salama, Nanis Mohammed Salah Eldin, Dina Mohamed Fathy ElMaghraby, Nada Ayman Gad, Marwa Fath Ahmed Ali, Fatma Soliman El-Sayed Ebeid
Ain Shams University. National Centre for Radiation Research and Technology, Egyptian Atomic Energy Authority. Minia University
Egypt

Expert Review of Hematology
Expert Rev Hematol 2025;
DOI: 10.1080/17474086.2025.2495670

Abstract
Background: Annexin A1 plays an important role in myocardial defense against ischemia-reperfusion injury. We aimed to evaluate the role of annexin A1 as a potential marker of vasculopathy in children and adolescents with sickle cell disease (SCD) and its relation to myocardial iron content (MIC) and vitamin D status.
Research design and methods: Forty-one patients with SCD were compared with 40 age- and sex-matched healthy controls, and underwent assessment of serum annexin A1, vitamin D, Doppler echocardiography and cardiac magnetic resonance (CMR).
Results: Six (14.6%) SCD patients had cardiac disease, five (12.2%) had abnormal MIC (≥1.16) and 10 (24.4%) had pulmonary hypertension risk. Annexin A1 levels were significantly lower among patients with SCD compared with healthy controls (p < 0.001). SCD patients with pulmonary hypertension risk, evidence of diastolic dysfunction, and nephropathy as well as those with serum ferritin ≥2500 µg/L and vitamin D deficiency had lower Annexin A1 levels than those without. Serum annexin A1 levels were negatively correlated to urinary albumin creatinine ratio (UACR) and Tei index while positively correlated to vitamin D among SCD patients.
Conclusions: Annexin A1 could be a promising marker of vasculopathy and may provide a biochemical explanation for vitamin D deficiency in SCD.

Category
Class V. Pulmonary Hypertension Associated with Hematological, Systemic, Metabolic and Other Disorders
Acquired Patient Factors Associated with Pulmonary Vascular Disease
Potential Biomarkers Associated with Pulmonary Vascular Disease

Age Focus: Pediatric Pulmonary Vascular Disease

Fresh or Filed Publication: Fresh (PHresh). Less than 1-2 years since publication

Article Access
Free PDF File or Full Text Article Available Through PubMed or DOI: No

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