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White matter changes in the gerbil brain under chronic cerebral hypoperfusion
T Kurumatani1, T Kudo, Y Ikura
1Department of Neuropsychiatry, Osaka University Medical School, Suita, Japan.
Stroke
|May 22, 1998
Summary
In chronic cerebral hypoperfusion, myelin damage occurs before axonal damage in white matter. This suggests myelin changes are the primary event in leukoaraiosis.
Area of Science:
- Neuroscience
- Pathology
- Cerebrovascular Research
Background:
- Chronic cerebral hypoperfusion can lead to white matter rarefaction and ventricular dilatation.
- Understanding the molecular mechanisms of white matter alteration is crucial.
Purpose of the Study:
- To establish an animal model of chronic cerebral hypoperfusion.
- To determine the chronological sequence of molecular changes in cerebral white matter.
Main Methods:
- Developed a chronic cerebral hypoperfusion model in Mongolian gerbils using carotid artery coiling.
- Analyzed myelin basic protein (MBP), neurofilament H (NFH), and glial fibrillary acidic protein (GFAP) levels via Western blotting and ELISA.
Main Results:
- After 2 months of hypoperfusion, MBP and NFH levels decreased, while GFAP increased.
- Myelin basic protein (MBP) degradation preceded neurofilament H (NFH) degradation.
Conclusions:
- Myelin damage precedes axonal damage in white matter under chronic hypoperfusion.
- Myelin alteration is likely the primary pathological event in this condition.
- Findings may elucidate white matter pathology mechanisms in leukoaraiosis.