aspectos morfológicos da neurossecreção hipotalâmica no homem morphological aspects of hypothalamic neurosecretion, in the man
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ID: 226497
1980
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Abstract
Foi realizado um estudo histológico da região hipotalâmica anterior humana empregando-se a colocação pela hematoxilina crômica e a impregnação pelo carbonato de prata a fim de comparar os resultados obtidos com os dois métodos. Verificou-se que a impregnação argêntica fornecia imagens equivalentes ás obtidas com a hematoxilina crômica. Todavia, não pode ser empregada isoladamente, devendo-se sempre fazer o controle com a hematoxilina crômica. Em uma segunda parte do trabalho discute-se o fenômeno da degeneração das porções terminais e subterminais das fibras nervosas do feixe supra-óptico-hipofisário, coincidindo com a formação dos chamados "corpos de Herring". Conceitua-se estes neurônios que formam os núcleos supra-ópticos e paraventricular como um tipo de célula glandular, não obstante sua natureza neuronal, cuja eliminação do produto de elaboração coincide com a desagregação do pólo apical da célula.
The author perfomed a histological study of the anterior region of the human hypothalamus staining with chrome hematoxylin and silver carbonate in order to compare the results obtained by both methods. The two stains produced similar results. However, it was found that the silver carbonate impregnation should not be used exclusively, but should always be checked with chrome hematoxylin. The second part of this paper deals with the degeneration of the terminal portions of the nerve fibers of the supra-optical-hypophyseal tract, with formation of the socalled "Herring bodies". The neurons are thought to function as a type of neuroglandular cell, whose production of secretions coincides with the dissolution of the cells's apical pole.
The author perfomed a histological study of the anterior region of the human hypothalamus staining with chrome hematoxylin and silver carbonate in order to compare the results obtained by both methods. The two stains produced similar results. However, it was found that the silver carbonate impregnation should not be used exclusively, but should always be checked with chrome hematoxylin. The second part of this paper deals with the degeneration of the terminal portions of the nerve fibers of the supra-optical-hypophyseal tract, with formation of the socalled "Herring bodies". The neurons are thought to function as a type of neuroglandular cell, whose production of secretions coincides with the dissolution of the cells's apical pole.
| Reference Key |
alencar1980memriasaspectos
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| Authors | ;Alexandre Alencar |
| Journal | kurdistan journal of applied research |
| Year | 1980 |
| DOI |
10.1590/S0074-02761980000100001
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| URL | |
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