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Spatial correlations between the neuronal inclusions, swollen achromatic neurons, and glial cells in neuronal intermediate filament inclusion disease (NIFID)

Summary.

Neuronal intermediate filament (IF) inclusion disease (NIFID) is characterized by neuronal loss, neuronal cytoplasmic IF-positive inclusions (NI), swollen neurons (SN), and a glial cell reaction. We studied the spatial correlations between the clusters of NI, SN, and glial cells in four gyri of the temporal lobe (superior temporal gyrus, inferior temporal gyrus, lateral occipitotemporal gyrus, and parahippocampal gyrus) in four cases of NIFID. The densities of histological features (per 50×250 µm sample field) were as follows: NI (mean = 0.41, range 0.28–0.68), SN (mean = 1.41, range 0.47–2.65), glial cell nuclei (mean = 5.21, range 3.63–8.17). The NI and the SN were positively correlated in half of the brain regions examined, the correlations being present at the smallest field size (50×250 µm). The NI were also positively or negatively correlated with the glial cell nuclei in different areas, the negative correlations being present at the smallest field size. Glial cell nuclei were positively or negatively correlated with the SN in different brain areas, mainly at the larger field sizes (400×250 and 800×250 µm). The spatial correlation between the clusters of NI and SN in the cortex suggests their development within the same columns of cells. At first, the glial cell reaction is also confined to these columns but later becomes more generally distributed across the cortex.

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Cairns, N., Armstrong, R. Spatial correlations between the neuronal inclusions, swollen achromatic neurons, and glial cells in neuronal intermediate filament inclusion disease (NIFID). J Neural Transm 112, 473–480 (2005). https://doi.org/10.1007/s00702-004-0205-0

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  • Keywords: Neuronal intermediate filament inclusion disease (NIFID), neuronal cytoplasmic IF-positive inclusions (NI), swollen achromatic neurons (SN), glial cell nuclei, clustering, correlations.