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Qu'est-ce (qui) est axonal$6325$ - définition

TYPE OF TRAUMATIC BRAIN INJURY

Diffused axonal injury; Axonal stretch injury; Axonal stretch; Traumatic axonal injury; Diffuse degeneration of white matter; Traumatic diffuse axonal injury; Diffuse traumatic axonal injury; Shearing injury

Diffuse axonal injury

Diffuse axonal injury (DAI) is a brain injury in which scattered lesions occur over a widespread area in white matter tracts as well as grey matter. DAI is one of the most common and devastating types of traumatic brain injury and is a major cause of unconsciousness and persistent vegetative state after severe head trauma.

https://en.wikipedia.org/wiki/Diffuse_axonal_injury

Axonal transport

THE DIRECTED MOVEMENT OF ORGANELLES OR MOLECULES ALONG MICROTUBULES IN AXONS.

Axoplasmic flow; Retrograde transport; Anterograde transport; Axonal transport system; Axoplasmic transport; Axonal spheroid

Axonal transport, also called axoplasmic transport or axoplasmic flow, is a cellular process responsible for movement of mitochondria, lipids, synaptic vesicles, proteins, and other organelles to and from a neuron's cell body, through the cytoplasm of its axon called the axoplasm. Since some axons are on the order of meters long, neurons cannot rely on diffusion to carry products of the nucleus and organelles to the end of their axons.

https://en.wikipedia.org/wiki/Axonal_transport

Wallerian degeneration

PROCESS

Axonal degeneration

·- A form of degeneration occurring in nerve fibers as a result of their division;

- so called from Dr. Waller, who published an account of it in 1850.

Wikipédia

Diffuse axonal injury

Diffuse axonal injury (DAI) is a brain injury in which scattered lesions occur over a widespread area in white matter tracts as well as grey matter. DAI is one of the most common and devastating types of traumatic brain injury and is a major cause of unconsciousness and persistent vegetative state after severe head trauma. It occurs in about half of all cases of severe head trauma and may be the primary damage that occurs in concussion. The outcome is frequently coma, with over 90% of patients with severe DAI never regaining consciousness. Those who awaken from the coma often remain significantly impaired.

DAI can occur across the spectrum of traumatic brain injury (TBI) severity, wherein the burden of injury increases from mild to severe. Concussion may be a milder type of diffuse axonal injury.

https://en.wikipedia.org/wiki/Diffuse axonal injury