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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
01/08/1992 |
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Data da última atualização: |
27/06/2023 |
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Autoria: |
O'SHEA, J. D.; GRAN, D. G.; HAY, M. F. |
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Título: |
The small luteal cell of the sheep. |
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Ano de publicação: |
1979 |
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Fonte/Imprenta: |
Journal Anatomy, v.128, n.2, p.239-251, 1979. |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Corpora lutea of sheep were examined by electron microscopy at day 10 of the oestrous cycle and at days 15, 25, 50, 100, 125 and 140 of pregnancy. Small luteal cells were present in all corpora lutea, and were two to three times as numerous as large luteal cells. The former were irregular in shape, with tapering cytoplasmic processes. Their major cytoplasmic organelles were a predominantly smooth endoplasmic reticulum, mitochondria with tubular and lamellar cristae, and one or more Golgi complexes. The enzyme delta 5-3 beta-hydroxysteroid dehydrogenase was present in their cytoplasm. Small luteal cells were often interposed between large luteal cells and capillaries, and formed close, complex surface relationships with large luteal cells. Small and large luteal cells differed in many ways, including the restriction of numerous approximately 0.2 micron cytoplasmic granules to the large cells, and no cells of intermediate structure were observed. These features of small luteal cells suggest a steroid hormone synthetic function, and direct interaction with large luteal cells. |
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Palavras-Chave: |
3 Hydroxysteroid Dehydrogenases; Histofisiologia; Time Factors. |
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Thesagro: |
Endocrinologia; Ovino; Reprodução. |
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Thesaurus Nal: |
Corpus luteum; Endocrinology; Enzymology; Estrus; Females; Fibroblasts; Pregnancy; Reproduction; Sheep; Ultrastructure. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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Marc: |
LEADER 01942naa a2200337 a 4500
001 1519875
005 2023-06-27
008 1979 bl uuuu u00u1 u #d
100 1 $aO'SHEA, J. D.
245 $aThe small luteal cell of the sheep.$h[electronic resource]
260 $c1979
520 $aAbstract: Corpora lutea of sheep were examined by electron microscopy at day 10 of the oestrous cycle and at days 15, 25, 50, 100, 125 and 140 of pregnancy. Small luteal cells were present in all corpora lutea, and were two to three times as numerous as large luteal cells. The former were irregular in shape, with tapering cytoplasmic processes. Their major cytoplasmic organelles were a predominantly smooth endoplasmic reticulum, mitochondria with tubular and lamellar cristae, and one or more Golgi complexes. The enzyme delta 5-3 beta-hydroxysteroid dehydrogenase was present in their cytoplasm. Small luteal cells were often interposed between large luteal cells and capillaries, and formed close, complex surface relationships with large luteal cells. Small and large luteal cells differed in many ways, including the restriction of numerous approximately 0.2 micron cytoplasmic granules to the large cells, and no cells of intermediate structure were observed. These features of small luteal cells suggest a steroid hormone synthetic function, and direct interaction with large luteal cells.
650 $aCorpus luteum
650 $aEndocrinology
650 $aEnzymology
650 $aEstrus
650 $aFemales
650 $aFibroblasts
650 $aPregnancy
650 $aReproduction
650 $aSheep
650 $aUltrastructure
650 $aEndocrinologia
650 $aOvino
650 $aReprodução
653 $a3 Hydroxysteroid Dehydrogenases
653 $aHistofisiologia
653 $aTime Factors
700 1 $aGRAN, D. G.
700 1 $aHAY, M. F.
773 $tJournal Anatomy$gv.128, n.2, p.239-251, 1979.
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