ArticleNeuroradiology2026
Disrupted age-related glymphatic patterns in children with deep gray matter hypoxic-ischemic encephalopathy: a diffusion tensor imaging analysis along the perivascular space study.
Article in Neuroradiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
purposeHypoxic-ischemic encephalopathy (HIE) remains a major cause of pediatric morbidity, with deep gray matter injury reflecting a severe pattern. The glymphatic system, a brain-wide perivascular network facilitating cerebrospinal and interstitial fluid exchange, may be vulnerable to disruption after HIE. We assessed glymphatic function in children with HIE-induced deep gray matter injury using diffusion tensor imaging analysis along the perivascular space (DTI-ALPS) and examined age-related patterns in glymphatic function.
methodsDTI-ALPS analysis was retrospectively studied in 38 normative controls (mean ± SD, 26.94 ± 34.03 months) and 25 patients with HIE and deep gray matter injury (20.55 ± 32.49 months). Bilateral ALPS indices were calculated and correlated with age and pediatric cerebral performance category scale (PCPC) scores. Due to non-normal distributions, Spearman correlations and generalized linear models (Gamma distribution, log link) adjusted for age were used for group comparisons. Age-adjusted associations were evaluated using residual-based analyses.
resultsALPS indices were significantly reduced in HIE patients compared to controls after age adjustment (Left: adjusted difference = 0.248, p < 0.001; Right: adjusted difference = 0.228, p < 0.001). In controls, ALPS indices positively correlated with age (Left: ρ = 0.730, p < 0.001; Right: ρ = 0.615, p < 0.001). After controlling for age using residual-based analyses, ALPS indices in patients negatively correlated with PCPC scores (Left: ρ = -0.468, p = 0.018; Right: ρ = -0.458, p = 0.021).
conclusionHIE disrupts normal age-related glymphatic patterns, and glymphatic dysfunction is associated with adverse functional outcomes.
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