Mitochondrial Dysfunction in Mitochondrial Medicine: Current Limitations, Pitfalls, and Tomorrow

Area of Science:

• Biochemistry
• Cell Biology
• Pathophysiology

Background:

• Mitochondrial dysfunction is implicated in a wide range of human diseases beyond hereditary mitochondrial disorders.
• Its role extends to metabolic, vascular, cardiac, neurodegenerative diseases, and cancer.
• Identifying the precise causes of mitochondrial dysfunction is complex due to mitochondria's diverse cellular roles.

Purpose of the Study:

• To review and discuss methods for assaying mitochondrial dysfunction.
• To highlight techniques used in patient-derived tissues and cells for diagnosis.
• To evaluate the strengths and weaknesses of current analytical approaches.

Main Methods:

• Analytical techniques initially focused on respiratory chain function.
• Current methods encompass mitochondrial and cellular metabolism analysis via metabolomics.
• Focus on techniques applicable to patient-derived samples for diagnostic insights.

Main Results:

• Mitochondrial dysfunction is a critical factor in numerous pathophysiological processes.
• Metabolomic approaches expand the scope of mitochondrial dysfunction analysis.
• Diagnostic techniques provide valuable, albeit sometimes limited, information.

Conclusions:

• Accurate evaluation of mitochondrial dysfunction requires robust and controlled methods.
• Future mitochondrial medicine depends on a comprehensive understanding of dysfunction.
• Therapeutic strategies must consider mitochondrial dynamics and localization.