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Journal of Neuroscience, Vol 16, 612-620, Copyright © 1996 by Society for Neuroscience

ARTICLE

Specificity of sympathetic preganglionic projections in the chick is influenced by the somitic mesoderm

JW Yip
Department of Neurobiology, School of Medicine, University of Pittsburgh, Pennsylvania 15261, USA.

It has been shown that the development of segmentally specific sympathetic preganglionic projections in the chick is influenced by the tissue environment along the pathway of the preganglionic axons. The cellular origin of this influence, however, is not known. In the present study, transplantation of quail somites into chick hosts showed that the cells in the local environment of the sympathetic trunk are derived from the somite. Surgical manipulations of chick somites then were performed to investigate whether somites play a role in the establishment of preganglionic projection patterns. When cervical somites were transplanted to the thoracic region, preganglionic neurons adjacent to the transplanted somites projected aberrantly. In addition, when somites were removed, the pattern of preganglionic axonal projections to their target ganglia was altered. These results indicate that the specificity of sympathetic preganglionic projections is influenced by the somitic mesoderm.

This article has been cited by other articles:

				J. W. Yip, Y. P. L. Yip, and C. Capriotti Segmental Specificity of Chick Sympathetic Preganglionic Projections Is Influenced by Preganglionic Neurons from Neighboring Spinal Cord Segments J. Neurosci., December 15, 1998; 18(24): 10473 - 10480. [Abstract] [Full Text] [PDF]

				C. J. Forehand, E. B. Ezerman, J. P. Goldblatt, D. L. Skidmore, and J. C. Glover Segment-specific pattern of sympathetic preganglionic projections in the chicken embryo spinal cord is altered by retinoids PNAS, September 1, 1998; 95(18): 10878 - 10883. [Abstract] [Full Text] [PDF]

				L Tiret, H Le Mouellic, M Maury, and P Brulet Increased apoptosis of motoneurons and altered somatotopic maps in the brachial spinal cord of Hoxc-8-deficient mice Development, January 1, 1998; 125(2): 279 - 291. [Abstract] [PDF]

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