Search

Your search keyword '"Yokouchi, Kumiko"' showing total 40 results
Start Over Author "Yokouchi, Kumiko"
40 results on '"Yokouchi, Kumiko"'

17. Analysis of spontaneous regeneration of olfactory structures with emphasis on myelination and re-innervation of cortical areas

Author

Fukushima, Nanae; yCkpuakh, Yokouchi, Kumiko, Sakamoto, Michio, Sekiguchi, Yasuyuki, Koike, Hiroki, Kawagishi, Kyutaro; uCnpuakh, Moriizumi, Tetsuji; gVcVZVkC, Fukushima, Nanae; yCkpuakh, Yokouchi, Kumiko, Sakamoto, Michio, Sekiguchi, Yasuyuki, Koike, Hiroki, Kawagishi, Kyutaro; uCnpuakh, and Moriizumi, Tetsuji; gVcVZVkC

Abstract

Regeneration of the lateral olfactory tract (LOT) occurs spontaneously after transection in developing rats. In neonatally LOT-transected rats, we observed a newly formed myelinated tract near the rhinal sulcus. The aim of this study was to analyze the precise re-innervated cortical areas and to demonstrate ectopic LOT myelination in neonatally LOT-transected rats. Neonatal rats were subjected to unilateral LOT transection and simultaneous injection of a retrograde fluorescent tracer into the posterior olfactory cortex to evaluate the degree of transection. After 8 weeks, bilateral olfactory bulbs of the rats were subjected to multiple injections of an anterograde neuronal tracer to determine the extent of the regenerated fibers. In the completely LOT-transected rats, the regenerated fibers were distributed in the anterior olfactory cortices: the anterior olfactory nucleus, the olfactory tubercle, and the rostral part of the piriform cortex. Ectopic myelination of LOT was evident immediately below the rhinal sulcus in the completely and incompletely LOT-transected rats. We concluded that the regenerated bulbar fibers were confined to the regions of the anterior olfactory cortices and that ectopic myelination of the regenerated LOT occurred only at a specific site near the rhinal sulcus.

Published
2014

39. Calretininimmunoreactive neurons in rostral migratory stream

Author

Kato, Takashi, Yokouchi, Kumiko, Li, Zhiyou, Fukushima, Nanae, Kawagishi, Kyutaro, and Moriizumi, Tetsuji

Abstract

THE purpose of the present study was to examine immunohistochemically the expression of nestin and polysialylated neural cell adhesion molecule in calretinin-immunoreactive neurons of the rostral migratory stream, the restricted pathway through which neuronal precursor cells migrate towards the olfactory bulb. Using mirror sectioning, calretinin-immunoreactive neurons of the rostral migratory stream were shown to co-express nestin (20.8) and polysialylated neural cell adhesion molecule (61.8). The results show that calretinin-immunoreactive neurons in the rostral migratory stream still express immature neural and neuronal phenotypes.

Published
1999

Catalog

Books, media, physical & digital resources
See catalog results