Publication: lmmunogold identification of the GH cells of goat in different physiological conditions
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Date
1993
Authors
Sánchez, J. ; Navarro, J. A. ; Bernabé, A. ; Serrano, J. ; Gómez, S.
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Publisher
Murcia : F. Hernández
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DOI
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info:eu-repo/semantics/article
Description
Abstract
Growth hormone-containing cells (GH cells)
in the anterior pituitary gland of the female goat during
anoestrus, pregnancy and lactation were identified by the
immunogold complex technique combined with electron
microscopy. In the three physiological stages analyzed,
most of the GH cells were characterized by a round to
oval or triangular shape and the presence of numerous
spherical and electrondense secretory granules (300-
1,200 nm). Granules with the largest diameters were
observed during the lactating stage. In these cells, the
rough endoplasmic reticulum (RER) and Golgi complex
(GC) were usually poorly developed. Also in lactating
animals, a low number of GH cells with more highly
developed RER and GC with a few small secretory
granules (230-360 nm in diameter) were also observed.
This structural configuration suggests that these cells are
more active than those with a lower development of
cytoplasmic organelles, although their low frequency
does not support a considerable increase in hormonal
synthesis and release during lactation in comparison
with anoestrus and pregnancy stages.
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