Oxidative Stress ???a Phenotypic Hallmark of Fanconi Anemia and Down Syndrome: The Effect of Antioxidants

Author(s): El-Bassyouni HT*, Afifi HH, Eid MM, Kamal RM, El-Gebali HH, El-Saeed GSM, Thomas MM and Abdel-Maksoud SA

Background: Oxidative stress plays a major role in the pathogenesis of leukemia‑prone diseases such as Fanconi anemia (FA) and Down syndrome (DS). Aim: To explore the oxidative stress state in children with DS and FA by estimating the levels of antioxidants (e.g., malondialdehyde [MDA], total antioxidant capacity, and superoxide dismutase [SOD] activity) and DNA damage, and to evaluate of the effect of antioxidant treatment on these patients. Subjects and Methods: The study included 32 children clinically diagnosed with (15 patients) and FA (17 patients) in addition to 17 controls matched for age and sex. MDA, total antioxidant capacity, SOD activity, and DNA damage were measured. Antioxidants including Vitamin A, E, and C were given to the patients according to the recommended daily allowance for 6 months. Clinical follow‑up and re‑evaluation were conducted for all patients. Laboratory tests including complete blood count, karyotyping, DNA damage, and oxidative stress were re‑evaluated. Statistical analysis was performed using statistical computer program Statistical Package for the Social Sciences version 14.0. Results: Children with FA and DS had elevated levels of oxidative stress and more DNA damage than controls. Oxidative stress parameters and DNA damage improved in FA and DS patients after antioxidant administration. Conclusion: Early administration of antioxidants to FA and DS patients is recommended for slowing of the disease course with symptoms amelioration and improvement of general health.


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