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Mouse Models of Periventricular Leukomalacia
Published on: May 18, 2010
West syndrome with periventricular leukomalacia: a morphometric MRI study
1Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, Kodaira, Tokyo, Japan.
Pediatric Neurology
|January 8, 1999
Summary
West syndrome in infants is linked to periventricular leukomalacia, showing enlarged ventricles and delayed myelination. Midbrain and pons atrophy are key indicators that may cause this neurological condition.
Area of Science:
- Neuroimaging
- Pediatric Neurology
- Developmental Neuroscience
Background:
- Periventricular leukomalacia (PVL) is a common cause of cerebral palsy in preterm infants.
- West syndrome, a severe infantile epilepsy, is often associated with brain injury, including PVL.
- The specific neuroanatomical changes and their causal relationship with West syndrome in PVL patients remain unclear.
Purpose of the Study:
- To investigate the neuroanatomical characteristics of infants with periventricular leukomalacia (PVL).
- To compare brain morphometry between PVL patients with and without West syndrome and healthy controls.
- To elucidate the potential causal link between specific brain structural damage and the development of West syndrome.
Main Methods:
- A morphometric magnetic resonance imaging (MRI) study was conducted.
- Three groups were compared: PVL with West syndrome (Group 1), PVL without West syndrome (Group 2), and controls (Group 3).
- Measurements included Evans ratio, posterior horn ratio, Cella media index, third ventricle width, and midbrain, pons, and medulla oblongata areas.
Main Results:
- Infants with PVL and West syndrome (Group 1) showed significantly larger ventricular volumes (Evans ratio, posterior horn ratio, Cella media index, third ventricle width) compared to Groups 2 and 3.
- Delayed myelination was observed in all Group 1 patients and two Group 2 patients.
- Group 1 exhibited smaller midbrain and pons areas compared to Groups 2 and 3, and a smaller medulla oblongata compared to Group 3. Group 2 showed no significant differences in these brainstem areas compared to controls.
Conclusions:
- PVL patients with West syndrome exhibit significant ventricular dilatation and delayed myelination.
- Atrophy of the midbrain and pons is a characteristic finding in PVL patients with West syndrome.
- This midbrain and pons damage is strongly suggested as a potential cause of West syndrome in infants with PVL.
