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Hypoxia and inflammation in children with sickle cell disease: implications for hippocampal functioning and episodic
Mary Iampietro1, Tania Giovannetti, Reem Tarazi
1Department of Psychology, Weiss Hall, Temple University, 1701 N. 13th Street, Philadelphia, PA, 19122, USA.
Insights
Children with sickle cell disease (SCD) experience systemic issues that may impair neurocognition. This review highlights the understudied impact of SCD on episodic memory, particularly hippocampal function.
Area of Science:
- Neuroscience
- Pediatrics
- Hematology
Background:
- Sickle cell disease (SCD) involves chronic anemia, hypoxia, and inflammation.
- These systemic processes are linked to neurocognitive impairment in various populations.
- Episodic memory in children with SCD remains significantly understudied.
Purpose of the Study:
- To review the pathophysiology of SCD and its impact on cognitive functions.
- To focus on episodic memory, a domain potentially vulnerable due to hippocampal sensitivity.
- To explore the link between SCD-related hypoxia/inflammation and memory deficits.
Main Methods:
- Literature review of SCD pathophysiology.
- Review of existing research on cognitive and academic functioning in children with SCD.
- Examination of studies linking hypoxia, inflammation, and hippocampal function.
Main Results:
- Children with SCD face systemic challenges affecting brain health.
- Existing research shows a gap in understanding SCD's impact on episodic memory.
- Hypoxia and inflammation in SCD are associated with hippocampal damage and memory issues.
Conclusions:
- Children with SCD are at risk for neurocognitive deficits, especially in episodic memory.
- The hippocampus may be particularly vulnerable to SCD's systemic effects.
- Further research is needed to understand and address memory impairments in pediatric SCD.
Abstract:
Children with sickle cell disease (SCD) suffer from systemic processes (e.g., chronic anemia, recurrent hypoxic-ischemic events, chronic inflammation) that have been associated with neurocognitive impairment in a range of clinical populations, but which have been largely understudied in relation to specific domains of cognitive functioning in children with SCD. This review focuses on episodic memory, as the hippocampus may be especially vulnerable to the systemic processes associated with SCD. The first part of the paper outlines the pathophysiology of SCD and briefly reviews the extant literature on academic and cognitive functioning in children with SCD, emphasizing the dearth of research on episodic memory. Next, the complex systemic processes of hypoxia and inflammation associated with SCD are reviewed, along with research that has associated these processes with hippocampal damage and memory impairment. The paper concludes with suggestions for future research that are informed, in part, by the literature on developmental amnesia.
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There are four primary types of hypoxia, each resulting from a different cause:
1. Anemic hypoxia: This type occurs due to insufficient oxygen delivery caused by a lack of red blood cells (RBCs) or RBCs with abnormal or...