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Author Spotlight: Developing Precise and Clinically Relevant Models for Studying Secondary Degeneration in Traumatic Optic Neuropathy
Published on: November 29, 2024
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Inflammatory changes in optic nerve after closed-head repeated traumatic brain injury: Preliminary study
Radouil Tzekov1,2,3, Josie Phifer1, April Myers1
1a The Roskamp Institute , Sarasota , FL , USA.
Brain Injury
|November 12, 2016
Summary
Repeated mild traumatic brain injury (r-mTBI) caused inflammation and degeneration in the optic nerve of htau mice. These changes occurred in both young and old mice 24 hours post-injury.
Area of Science:
- Neuroscience
- Traumatic Brain Injury Research
- Ophthalmology
Background:
- Repeated mild traumatic brain injury (r-mTBI) is known to cause optic nerve damage in wild-type mice.
- This study examines if htau mice, which express human tau, exhibit similar neuropathological changes after r-mTBI.
Purpose of the Study:
- To investigate the effects of r-mTBI on the optic nerve of htau mice.
- To compare neuropathological changes in young and old htau mice following r-mTBI.
Main Methods:
- htau mice (young and old) were subjected to r-mTBI or sham anesthesia.
- Optic nerve samples were analyzed 24 hours post-injury for cellularity, myelin content, and astroglial reactivity.
Main Results:
- Increased cellularity and demyelination were observed in the intracranial optic nerve of r-mTBI htau mice.
- Astroglial reactivity and tau phosphorylation were elevated in r-mTBI htau mice compared to controls.
- These changes were evident in both young and old htau mice.
Conclusions:
- r-mTBI induces a localized inflammatory and degenerative response in the intracranial optic nerve of htau mice.
- Further research is needed to understand the mechanisms and implications of these findings.
