Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy

An electron microscopic study aimed at differentiation between “castration gonadotrophs” and “posthepatectomy STH cells” was performed on the pars distalis of the pituitary of castrated male mice, after partial hepatectomy. The ultrastructural features observed permit the distinction of both cell ty...

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Detalles Bibliográficos
Autores principales: Echave Llanos, Julián Miguel, Gómez Dumm, César Leandro Alberto
Formato: Articulo
Lenguaje:Inglés
Publicado: 1973
Materias:
Medicina
Biología
Pars distalis
House
STH cells
Castration
Hepatectomy
Electron microscopy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/140065
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-140065
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Medicina
Biología
Pars distalis
House
STH cells
Castration
Hepatectomy
Electron microscopy
spellingShingle Medicina
Biología
Pars distalis
House
STH cells
Castration
Hepatectomy
Electron microscopy
Echave Llanos, Julián Miguel
Gómez Dumm, César Leandro Alberto
Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
topic_facet Medicina
Biología
Pars distalis
House
STH cells
Castration
Hepatectomy
Electron microscopy
description An electron microscopic study aimed at differentiation between “castration gonadotrophs” and “posthepatectomy STH cells” was performed on the pars distalis of the pituitary of castrated male mice, after partial hepatectomy. The ultrastructural features observed permit the distinction of both cell types. In the present experiments some remarkable ultrastructural changes, other than those described in a previous report, have been found in STH cells of hepatectomized mice with or without previous castration. Most of them contained masses of heterogeneous electron density, suggesting fusion of granules. These masses and some secretion granules were observed close to the plasma membrane, apparently in the process of discharging material into the pericapillary space. Granular extrusion was more frequent than normally. An increased number of lysosomes, probably related to the digestion of overproduced secretion material, was evident. The appearance of concentric lamellar formations might be related to an increase in cell movements. STH cells with severe cytoplasmic damage were also found, indicating an increased rate of cell loss.
format Articulo
Articulo
author Echave Llanos, Julián Miguel
Gómez Dumm, César Leandro Alberto
author_facet Echave Llanos, Julián Miguel
Gómez Dumm, César Leandro Alberto
author_sort Echave Llanos, Julián Miguel
title Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
title_short Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
title_full Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
title_fullStr Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
title_full_unstemmed Ultrastructure of STH cells of the pars distalis of castrated male mice after hepatectomy
title_sort ultrastructure of sth cells of the pars distalis of castrated male mice after hepatectomy
publishDate 1973
url http://sedici.unlp.edu.ar/handle/10915/140065
work_keys_str_mv AT echavellanosjulianmiguel ultrastructureofsthcellsoftheparsdistalisofcastratedmalemiceafterhepatectomy
AT gomezdummcesarleandroalberto ultrastructureofsthcellsoftheparsdistalisofcastratedmalemiceafterhepatectomy
bdutipo_str Repositorios
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