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- Title
Spatiotemporal distribution of neuronal calcium sensor-1 in the developing rat spinal cord.
- Authors
Takayuki Kawasaki; Takeshi Nishio; Hisashi Kurosawa; John Roder; Andreas Jeromin
- Abstract
The present study revealed the localization of neuronal calcium sensor (NCS)-1 immunoreactivity (IR) in the developing rat spinal cord. The NCS-1 IR first appeared at embryonic day 12 in the peripheral nerves and their somata. Intense NCS-1 IR was expressed in ascending and descending tracts in the white matter during the late prenatal period, which gradually decreased to the faint level during postnatal development. Intense NCS-1 IR was colocalized with growth associated protein (GAP)-43 IR in the marginal zone and with the glutamate-aspartate transporter (GLAST) IR in the radial processes traversing the marginal zone. In the adult rat white matter, radially oriented astrocytes and astrocytes in the glia limitans were double-labeled for NCS-1 and glial fibrillary acidic protein (GFAP), whereas small dots on finger-like dendritic projections were double-labeled for NCS-1 and synaptophysin. In the developing gray matter, the NCS-1 IR appeared at embryonic day 12 and gradually increased in the neuronal somata and neuropil, reaching a plateau after the end of the 4th postnatal week. The small dots in neuropil were colabeled for NCS-1 and GFAP or NCS-1 and synaptophysin in the adult rat gray matter. These results strongly suggest that NCS-1 is involved in axogenesis and synaptogenesis in the developing rat spinal cord. NCS-1 can serve as a Ca2+-sensor not only in neurons but also in radial glial cells or even in radially oriented astrocytes in the adult rat spinal cord. J. Comp. Neurol. 460:465475, 2003. © 2003 Wiley-Liss, Inc.
- Subjects
RATS; SPINAL cord; DENDRITIC cells; PROTEINS
- Publication
Journal of Comparative Neurology, 2003, Vol 460, Issue 4, p465
- ISSN
0021-9967
- Publication type
Article
- DOI
10.1002/cne.10649