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Catecholaminergic nerves in the embryonic chick ovary - co-localization with beta-2-adrenoceptor-bearing steroidogenic cells

Academic Article
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Overview

authors

  • Mullermarschhausen, U.
  • Grothe, C.
  • Kaveri, S.
  • Strosberg, Donny
  • Verhofstad, A. A. J.
  • Unsicker, K.

publication date

  • 1988

journal

  • Cell and Tissue Research  Journal

abstract

  • The present study investigates the innervation of the embryonic chick ovary with regard to (i) development and compartmentalization of catecholaminergic nerves, and (ii) presence of adrenoceptors on steroidogenic target cells of catecholaminergic nerve terminals. Catecholaminergic nerve fibers visualized by glyoxylic acid-induced histofluorescence first appeared at embryonic day (E) 13. From E15 through E21 the density of fluorescent aminergic nerves increased markedly in parallel with the concentration of catecholamines and numbers of nerve bundles and single axons seen at the electron-microscopic level. Catecholaminergic nerves were confined to the ovarian medulla and closely associated with interstitial cells. Nerve terminals approached interstitial cells up to a distance of 20 nm and, in their majority, exhibited uptake of the false adrenergic transmitter 5-hydroxydopamine. Although adrenaline amounted to 14% of the total catecholamine content at E21, adrenaline immunoreactivity was only detected in adrenal chromaffin cells, but not in nerve fibers or cell bodies within the ovary. Interstitial cells structurally matured between E15 and E21 as documented by an increase of smooth endoplasmic reticulum and tubular mitochondria. Monoclonal antibodies mAB 120 and BRK 2 raised against avian beta 1- and mammalian beta 2-adrenergic receptors revealed the presence of beta 2-adrenoceptor-like immunoreactivity on the surface of interstitial cells, but not on any other cell type. The results are consistent with the notion of a dense adrenergic innervation of the embryonic chick ovarian medulla and its steroidogenic interstitial cells, and suggest the chick ovary as an excellent model for elucidating the functional role of a neural input to steroidogenic cells during development.

subject areas

  • Animals
  • Catecholamines
  • Chick Embryo
  • Epinephrine
  • Female
  • Histocytochemistry
  • Immunohistochemistry
  • Microscopy, Electron
  • Neurons
  • Ovary
  • Receptors, Adrenergic, beta
  • Steroids
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Identity

International Standard Serial Number (ISSN)

  • 0302-766X

PubMed ID

  • 2848626
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Additional Document Info

start page

  • 1

end page

  • 9

volume

  • 254

issue

  • 1

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