Mitochondrial dysfunction in depression: Mechanisms and targeted therapy strategies

Area of Science:

• Neuroscience
• Cell Biology
• Psychiatry

Background:

• Major depressive disorder (MDD) involves complex pathophysiology.
• Mitochondrial dysfunction is a significant factor in MDD, affecting neuroinflammation, synaptic plasticity, and energy metabolism.

Purpose of the Study:

• To review recent advances in understanding the role of mitochondrial defects in MDD pathogenesis.
• To evaluate mitochondria-targeted therapeutic strategies for MDD.

Main Methods:

• Literature review of studies on mitochondrial dysfunction in MDD.
• Analysis of preclinical and clinical data on therapeutic interventions.

Main Results:

• Mitochondrial defects, including mtDNA mutations, impaired mitophagy, disrupted dynamics, altered biogenesis, and metabolic dysregulation, contribute to depressive pathogenesis.
• Both pharmacological (antioxidants, CoQ10, NAD+ precursors, SSRIs, natural compounds) and non-pharmacological (exercise, ketogenic diet, photobiomodulation, electroacupuncture) interventions show promise.

Conclusions:

• Mitochondrial health is a central theme in MDD research and therapy development.
• Balancing mitochondrial anabolic and catabolic functions is crucial.
• Further clinical translation of promising preclinical findings is essential for effective MDD treatment.