ISSN:
1432-0533
Keywords:
6-Aminonicotinamide
;
Aqueduct “agenesis”
;
Ependymal cell
;
Hydrocephalus
;
Suckling mice
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Suckling mice which received a single intraperitoneal injection of 6-aminonicotinamide on the 5th postnatal day, consistently developed hydrocephalus. During the early stages of hydrocephalus (7–9 days after injection), aqueductal lesions were characterized by edematous ependymal and subependymal cells, and spongy changes in the periaqueductal area, which resulted in aqueduct stenosis. Later stages (after 20 days post-injection) showed that these edematous changes totally subsided, leaving an obliterated aqueduct which was similar to that of human congenital hydrocephalus. At the completely obliterated area, ultrastructural investigation disclosed a normal-looking neuropil but no aqueductal lumen. In the remaining ependymal cell, increased intermediate filaments and lipid droplets occurred. These data suggest that acute ependymal cell degeneration during the perinatal period may result in the profile of aqueduct “agenesis” in human congenital hydrocephalus.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00688046
Permalink
