Inherited mitochondrial disorders.
1Danube University Krems, Vienna, Austria. Europe. fifigs1@yahoo.de
Advances in Experimental Medicine and Biology
|March 9, 2012
Summary
Most inherited mitochondrial disorders (MIDs) present non-syndromically, affecting multiple systems. Suspect MIDs with combined neurological and non-neurological symptoms, guiding genetic testing by clinical presentation.
Area of Science:
- Genetics
- Neurology
- Mitochondrial Biology
Background:
- Inherited mitochondrial disorders (MIDs) are often recognized by syndromic forms with established acronyms.
- However, the majority of MIDs manifest in non-syndromic, multisystem presentations.
Purpose of the Study:
- To highlight the importance of recognizing non-syndromic MIDs.
- To emphasize the multisystem nature of MIDs and guide diagnostic suspicion.
Main Methods:
- Review of clinical presentations of MIDs.
- Correlation of neurological and non-neurological abnormalities.
- Guidance on diagnostic approaches including genetic testing.
Main Results:
- MIDs frequently present with a combination of neurological and non-neurological abnormalities.
- Neurological signs include stroke-like episodes, epilepsy, ataxia, and cognitive impairment.
- Non-neurological manifestations involve various organs such as the heart, endocrine system, and kidneys.
Conclusions:
- A high index of suspicion for MIDs is warranted in cases with unexplained combinations of neurological and non-neurological diseases.
- Diagnostic strategies should integrate clinical phenotype, biopsy findings, and biochemical results.
- Genetic testing is crucial and should be phenotype-driven.
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