Early development of chick embryo respiratory nervous system: an immunohistochemical study

Anatomy and Embryology
R VaccaroT Renda

Abstract

The extrinsic and intrinsic respiratory nervous systems receive specific contributions from the vagal and sympathetic components. Using specific markers for vagal and sympathetic structures, we studied the distribution patterns of immunoreactivity to galanin (GAL), pituitary adenylate cyclase-activating polypeptide-27 (PACAP) and the tachykinin substance P in extrinsic and intrinsic nerve of chick embryo respiratory system, during development from the very early age to hatching. All peptides studied appeared in the intrinsic and extrinsic nervous systems early. We found substance P in both the vagal and sympathetic systems, PACAP in vagal components alone and GAL mainly in the sympathetic system. The intrinsic nervous system showed high immunoreactivity for all peptides studied. These data accord with the well known early trophic functions that peptides have on the development of nervous networks and modulatory activity on the intrinsic nervous system. The GAL again proves to be the main peptide in chick embryo sympathetic respiratory system.

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Citations

Jul 9, 2008·Journal of Molecular Neuroscience : MN·Akos BorosLaszló Molnar
Nov 25, 2011·American Journal of Physiology. Lung Cellular and Molecular Physiology·Nikesh R LathDouglas A Potoka
Feb 9, 2010·American Journal of Respiratory Cell and Molecular Biology·Aliete LangsdorfXingbin Ai
May 3, 2015·American Journal of Physiology. Lung Cellular and Molecular Physiology·Julie RhodesDouglas A Potoka

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