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Updated: Jul 30, 2025

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Hyaline protoplasmic astrocytopathy in epilepsy.
Shino Magaki1, Mohammad Haeri1,2, Linda J Szymanski3
1Division of Neuropathology, Department of Pathology & Laboratory Medicine, Ronald Reagan UCLA Medical Center and David Geffen School of Medicine, Los Angeles, California, USA.
Hyaline protoplasmic astrocytopathy (HPA) involves unusual astrocyte inclusions seen in epilepsy. These inclusions may represent a reactive or degenerative process in the brain.
Area of Science:
- Neuropathology
- Neuroscience
- Histology
Background:
- Hyaline protoplasmic astrocytopathy (HPA) is a rare finding of hyaline inclusions in astrocytes.
- HPA is often associated with developmental delay, epilepsy, and focal cortical dysplasia (FCD).
- The nature and significance of these astrocytic inclusions remain unclear.
Conclusions:
- Astrocytic inclusions in HPA show reactivity for astrocytic markers and filamin A.
- The findings suggest HPA may stem from an uncommon reactive or degenerative astrocytic phenomenon.
- Further research is needed to elucidate the exact nature and implications of HPA.
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