granulovacuolar degeneration
Pathological changes in hippocampal neurons characterized by cytoplasmic vacuoles containing central granules.
Full Definition
Granulovacuolar degeneration refers to a distinctive pathological change affecting pyramidal neurons, particularly in the hippocampal CA1 region, characterized by the presence of cytoplasmic vacuoles each containing a single, central, basophilic granule. This change increases with age but is significantly more prevalent in Alzheimer's disease and other neurodegenerative conditions. The vacuoles are thought to represent autophagic structures, and the granules contain various proteins including tau and ubiquitin. Granulovacuolar degeneration is considered an important marker of neuronal stress and dysfunction in the hippocampus.
Usage
Usage note: Often abbreviated as GVD in informal contexts; specific to hippocampal pathology.
In Context
- "Extensive granulovacuolar degeneration was present in CA1 pyramidal neurons throughout the hippocampus." — Neuropathological findings
- "The severity of granulovacuolar degeneration correlated with the degree of cognitive impairment." — Clinicopathological correlation