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Related Experiment Video

Updated: Aug 31, 2025

Microfluidics-Assisted Selective Depolarization of Axonal Mitochondria

Microfluidics-Assisted Selective Depolarization of Axonal Mitochondria

Published on: August 4, 2022

Mitochondrial behavior when things go wrong in the axon.

Victorio M Pozo Devoto¹, Isaac G Onyango¹, Gorazd B Stokin^1,2,3

¹Translational Neuroscience and Ageing Program, Centre for Translational Medicine, International Clinical Research Centre, St. Anne's University Hospital, Brno, Czechia.

Frontiers in Cellular Neuroscience

|August 22, 2022

Summary

Mitochondria are crucial for axonal health, providing energy and calcium buffering. Their transport and function are vital for nervous system recovery after injury or disease.

Keywords:

axonal degeneration calcium homeostasis mitochondria mitochondrial dynamics mitochondrial transport traumatic brain injury

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Area of Science:

Neuroscience
Cell Biology
Biochemistry

Background:

Axonal homeostasis relies on cytoskeletal regulation, transport, and energy supply, with mitochondria playing a key role.
Mitochondria function as transportable powerhouses, supplying ATP and buffering calcium, essential for neuronal function.
Axonal integrity is compromised in neurological disorders and traumatic brain injury (TBI), affecting mitochondrial dynamics.

Purpose of the Study:

To review the current understanding of mitochondrial transport, fusion/fission, and calcium regulation in axons.
To highlight the critical role of mitochondria in maintaining axonal homeostasis under physiological and pathological conditions.
To explore how mitochondrial dysfunction contributes to axonal damage and impacts recovery.

Main Methods:

Literature review of studies on mitochondrial dynamics in axons.
Analysis of research on calcium signaling and its impact on mitochondria.
Synthesis of findings related to axonal injury models and neurological disease.

Main Results:

Mitochondrial transport, distribution, and fusion/fission are essential for axonal health over long distances.
Cytoskeletal disruptions and elevated intra-axonal calcium levels significantly challenge mitochondrial homeostasis.
Proper mitochondrial function and distribution are critical for axonal recovery and regeneration.

Conclusions:

Mitochondria are central to axonal resilience, with their transport and calcium regulation being key determinants of neuronal health.
Dysfunctional mitochondria exacerbate axonal damage in neurological conditions and TBI.
Targeting mitochondrial pathways offers potential therapeutic strategies for nervous system disorders.