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Asymptomatic cores and paracrystalline mitochondrial inclusions in CADASIL
A Malandrini1, F Albani, S Palmeri
1Istituto Scienze Neurologiche, Università di Siena, Italy. malandrini@unisi.it
Insights
Three siblings with cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) showed muscle abnormalities. The Notch3 gene may influence mitochondrial metabolism in these rare neurological disease cases.
Area of Science:
- Neurology
- Genetics
- Mitochondrial Biology
Background:
- Cerebral Autosomal Dominant Arteriopathy with Subcortical Infarcts and Leukoencephalopathy (CADASIL) is a rare genetic disorder.
- It is characterized by cerebrovascular abnormalities, cognitive decline, and stroke.
- Muscle involvement and mitochondrial dysfunction are not typical features of CADASIL.
Observation:
- This study describes three siblings with genetically confirmed CADASIL.
- These patients presented with unique core-like lesions and muscle mitochondrial abnormalities.
- Genetic testing excluded mutations in the Ryanodine receptor 1 gene.
Findings:
- The specific molecular genetic lesion correlating with muscle fiber abnormalities in these CADASIL cases is yet to be determined.
- However, the study suggests a potential role for the Notch3 gene in influencing mitochondrial metabolism.
- This finding opens new avenues for understanding CADASIL pathogenesis.
Implications:
- The findings suggest that Notch3 gene mutations in CADASIL might have broader systemic effects beyond the brain.
- Understanding the link between Notch3 and mitochondrial function could lead to novel therapeutic strategies for CADASIL.
- Further research is warranted to elucidate the precise mechanisms involved.
Abstract:
Three siblings with genetically assessed cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy (CADASIL) with core-like lesions and mitochondrial abnormalities in muscles are described. Involvement of the Ryanodine receptor 1 gene was excluded. In the current cases, the relation between molecular genetic lesion and muscle fiber abnormalities remains to be determined, but the Notch3 gene may influence mitochondrial metabolism.