The indusium griseum: is it involved in Alzheimer's disease
Department of Pathology; Department of Neurology
Aged; Aged, 80 and over; Alzheimer Disease; Female; Hippocampus; Humans; Immunohistochemistry; Male; Neurofibrils; Neurons
Neurology | Neuroscience and Neurobiology
The histopathology of the indusium griseum (IG), a displaced hippocampal anlage, was studied in five patients with Alzheimer's disease (AD) and five controls. In the AD group, the IG had occasional neurons with granulovacuolar change (GVD) and rare Hirano bodies (HB), but no senile plaques (SP), neurofibrillary tangles (NFT), or neurons staining for phosphorylated neurofilament antigen. There was a slight but not statistically significant diminution of neurons within the IG. In all AD cases, the hippocampus showed abundant AD-associated histopathology. In the control cases, only rare neurons with GVD were present in the IG. These findings indicate that although single neurons within the IG may show some of the cytologic changes seen in the hippocampal neurons in normal aging and AD, IG neurons do not express the full range and severity of histopathologic abnormalities characteristic of AD. This suggests that factors other than selective vulnerability of neurons of hippocampal origin might be operating to induce the neuropathologic picture of AD.
Neurobiol Aging. 1990 Sep-Oct;11(5):551-4.
Neurobiology of aging
Lippa, Carol F.; Smith, Thomas W.; DeGirolami, Umberto; and Drachman, David A., "The indusium griseum: is it involved in Alzheimer's disease" (1990). Neurology Publications and Presentations. 212.