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Somatostatin immunoreactive structures in the developing rat spinal cord.

R H Ho1

  • 1Department of Anatomy and Neuroscience, Ohio State University, Columbus 43210.

Brain Research Bulletin
|July 1, 1988
PubMed
Summary
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Somatostatin-immunoreactive cells and fibers appear early in spinal cord development. Their density changes dynamically, reflecting synthesis capabilities coinciding with cell division.

Area of Science:

  • Neuroscience
  • Developmental Biology
  • Spinal Cord Research

Background:

  • Somatostatin (SOM) is a neuropeptide with diverse physiological roles.
  • Understanding its developmental expression in the spinal cord is crucial for comprehending neural circuit formation.

Purpose of the Study:

  • To map the spatiotemporal expression of somatostatin immunoreactivity in the developing mammalian spinal cord.
  • To correlate SOM expression patterns with neuronal development and cell birth timing.

Main Methods:

  • Immunohistochemistry was used to detect somatostatin immunoreactive (SOM-I) perikarya and fibers.
  • Observations were made at various embryonic (E) and postnatal (E20) developmental stages.

Main Results:

Related Experiment Videos

  • SOM-I perikarya were detected in the ventral horn by E12 and in the dorsal horn by E14.
  • SOM-I fibers appeared in the dorsal horn superficial laminae by E20 and in spinal funiculi from E14 onwards.
  • Expression patterns generally showed initial increases followed by decreases in density, with regional variations.

Conclusions:

  • Somatostatin expression is initiated early in spinal cord development, preceding or coinciding with final cell divisions.
  • The dynamic expression patterns suggest a role for SOM in spinal cord maturation and circuit refinement.