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[Free radical oxidation in children with severe craniocerebral injury]

Iu S Aleksandrovich, I Iu Arutsova, S N L'vov

    Anesteziologiia I Reanimatologiia
    |April 28, 2007
    PubMed

    Insights

    Severe pediatric brain injury (BI) activates lipid peroxidation (LPO) and impairs the antioxidative system (AOS) within 24 hours. Unlike adults, children show no excessive LPO phase due to AOS reserve exhaustion.

    Area of Science:

    • Biochemistry
    • Pediatric Neurology
    • Oxidative Stress Research

    Context:

    • Severe brain injury (BI) in children presents unique physiological responses.
    • Understanding oxidative stress markers is crucial for managing pediatric BI.
    • Lipid peroxidation (LPO) and antioxidative system (AOS) dynamics in pediatric BI are not fully elucidated.

    Purpose:

    • To investigate the temporal changes in LPO products and AOS activity in children with severe BI.
    • To compare the oxidative stress response in pediatric BI with that observed in adults.

    Summary:

    • This study analyzed lipid peroxidation (LPO) products and antioxidative system (AOS) markers in 94 children (3-15 years) with severe brain injury (BI) on days 1, 3-5, and 7-10 post-injury.
    • Measurements included dienic conjugates, malonic dialdehyde, induced peroxide hemolysis, and red blood cell peroxide resistance.
    • Results indicate activated LPO processes and decreased AOS activity in children with severe BI, with the most significant changes occurring within 24 hours.

    Impact:

    • Findings reveal distinct pediatric BI oxidative stress patterns, differing from adult responses.
    • Highlights the absence of a phase of excessive LPO activation due to AOS reserve exhaustion in children.
    • Provides critical insights into the pathophysiology of pediatric brain injury and potential therapeutic targets.

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