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Dissection of Hippocampal Dentate Gyrus from Adult Mouse
Published on: November 17, 2009
Hippocampal abnormalities associated with various congenital malformations
Fuldem Y Donmez1, Mahir Yildirim, Nilgun Erkek
1Department of Radiology, Baskent University, Fevzi Cakmak Caddesi 10. sokak no: 45, Bahcelievler, Ankara 06490, Turkey. fuldemyildirim@yahoo.com
Summary
Hippocampal abnormalities are common in congenital brain malformations, affecting over half of patients. These findings are often linked to conditions like cortical dysplasia and agenesis of the corpus callosum.
Area of Science:
- Neuroscience
- Radiology
- Developmental Biology
Background:
- Congenital brain malformations represent a diverse group of developmental disorders.
- The hippocampus, crucial for memory and learning, can be affected in these conditions.
- Understanding these associations is vital for diagnosis and prognosis.
Purpose of the Study:
- To evaluate hippocampal abnormalities in patients with congenital brain malformations.
- To determine the frequency of hippocampal abnormalities in specific congenital brain malformation subgroups.
- To explore the relationship between hippocampal abnormalities and various brain malformations.
Main Methods:
- Retrospective analysis of 62 patients with congenital brain malformations.
- Review of thin-slice coronal T2-weighted, fluid attenuated inversion recovery (FLAIR), and T1-weighted 3D gradient echo MRI sequences.
- Assessment of congenital brain malformation types and hippocampal morphological or rotational abnormalities.
Main Results:
- Hippocampal abnormalities were identified in 55.8% of patients with congenital brain malformations.
- The most frequent associations were with cortical dysplasia, lissencephaly, and total agenesis of the corpus callosum.
- Severity of brain injury appeared to correlate with the extent of hippocampal involvement.
Conclusions:
- Hippocampal abnormalities are a frequent comorbidity in congenital brain malformations.
- Specific malformations like cortical dysplasia and agenesis of the corpus callosum show a strong association with hippocampal abnormalities.
- The extent of brain malformation may influence the degree of hippocampal abnormality.
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