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Updated: Jun 29, 2026
Mouse Models of Periventricular Leukomalacia
Published on: May 18, 2010
Impaired glymphatic system revealed by DTI-ALPS in cerebral palsy due to periventricular leukomalacia: relation with
Yu Yin1,2, Ying Peng1, Lisha Nie3
1Department of Radiology, Affiliated Hospital of Zunyi Medical University, Medical Imaging Center of Guizhou Province, Zunyi, China.
Insights
Children with cerebral palsy (CP) and periventricular leukomalacia (PVL) show impaired glymphatic activity, impacting hand function. This study reveals glymphatic impairment as a key factor in CP-related hand dysfunction.
Area of Science:
- Neuroscience
- Medical Imaging
- Pediatrics
Background:
- Children with cerebral palsy (CP) often experience hand dysfunction, with the underlying mechanisms not fully explained by periventricular leukomalacia (PVL).
- Glymphatic system dysfunction is increasingly recognized as a factor in various neurological conditions.
Purpose of the Study:
- To investigate glymphatic activity using diffusion tensor image analysis along the perivascular space (DTI-ALPS) in children with CP secondary to PVL.
- To evaluate the association between glymphatic activity, brain lesion burden, and hand dysfunction severity.
Main Methods:
- Retrospective enrollment of 18 children with bilateral spastic CP due to PVL and 29 typically developing controls.
- Assessment of hand dysfunction using the Manual Ability Classification System (MACS).
- Application of a mediation model to analyze the relationships between DTI-ALPS index, brain lesion burden, and MACS level.
Main Results:
- Children with CP exhibited significantly lower DTI-ALPS index values compared to controls (1.448 vs. 1.625, P = 0.003).
- The DTI-ALPS index fully mediated the relationship between brain lesion burden and MACS level, explaining 80% of the effect.
Conclusions:
- Glymphatic system impairment plays a significant role in the hand dysfunction observed in children with CP.
- Periventricular leukomalacia may contribute to hand dysfunction in CP by disrupting glymphatic drainage pathways.
Purpose:
Preterm children with cerebral palsy (CP) often have varying hand dysfunction, while the specific brain injury with periventricular leukomalacia (PVL) cannot quite explain its mechanism. We aimed to investigate glymphatic activity using diffusion tensor image analysis along the perivascular space (DTI-ALPS) method and evaluate its association with brain lesion burden and hand dysfunction in children with CP secondary to PVL.
Methods:
We retrospectively enrolled 18 children with bilateral spastic CP due to PVL and 29 age- and sex-matched typically developing controls. The Manual Ability Classification System (MACS) was used to assess severity of hand dysfunction in CP. A mediation model was performed to explore the relationship among the DTI-ALPS index, brain lesion burden, and the MACS level in children with CP.
Results:
There were significant differences in the DTI-ALPS index between children with CP and their typically developing peers. The DTI-ALPS index of the children with CP was lower than that of the controls (1.448 vs. 1.625, P = 0.003). The mediation analysis showed that the DTI-ALPS index fully mediated the relationship between brain lesion burden and the MACS level (c' = 0.061, P = 0.665), explaining 80% of the effect.
Conclusion:
This study provides new insights into the neural basis of hand dysfunction in children with CP, demonstrating an important role of glymphatic impairment in such patients. These results suggest that PVL might affect hand function in children with CP by disrupting glymphatic drainage.
