Ultrastructural studies of developing goat oocytes in-vitro

The structure and distribution of organelles within developing goat oocytes at various stages of incubation were studied. In oocytes with 5 or more layers of cumulus cells, at 0 h of incubation, the zona pellucida had developed although zonation was not evident. Lipid bodies were present but no mito...

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Main Authors: Abdullah, Ramli, Yusoff, M., Rajikin, M.H.
Format: Article
Published: 1994
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Online Access:http://eprints.um.edu.my/8379/
http://www.sciencedirect.com/science/article/pii/0093691X9490122Y
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spelling my.um.eprints.83792021-04-28T07:38:46Z http://eprints.um.edu.my/8379/ Ultrastructural studies of developing goat oocytes in-vitro Abdullah, Ramli Yusoff, M. Rajikin, M.H. QH301 Biology The structure and distribution of organelles within developing goat oocytes at various stages of incubation were studied. In oocytes with 5 or more layers of cumulus cells, at 0 h of incubation, the zona pellucida had developed although zonation was not evident. Lipid bodies were present but no mitochondria were observed. At 20 h, the zona pellucida had differentiated into thicker and thinner regions. Clusters of membrane-bound electron-transparent bodies were present in the perivitelline space. The mitochondria were fully developed, distributed evenly and usually in close proximity with dilated endoplasmic reticula. Cortical granules were distributed at the periphery. At 40 h of incubation, a number of mitochondria was hooded. In oocytes of 2 to 4 layers of cumulus cells at 0 h, the zona pellucida was penetrated by cumulus cell processes, and the mitochondria were not well developed. However, in 20-h incubated oocytes, fully developed mitochondria, many of which were hooded, could be observed. Clusters of membrane-bound electron-transparent bodies were also observed, while cortical granules were at the periphery. In cumulus-free oocytes, zonation within the zona pellucida was indistinct. Very few vesicles and lipid bodies were observed. At 20 h, mitochondria were sparsely distributed and were not well developed and lacked cristae. At 40 h, the zona pellucida was less compact, and the membrane-bound electron-transparent bodies were less numerous compared with those of the other groups. Endoplasmic reticula were not dilated, and cortical granules were few and had no definite pattern of distribution. 1994 Article PeerReviewed Abdullah, Ramli and Yusoff, M. and Rajikin, M.H. (1994) Ultrastructural studies of developing goat oocytes in-vitro. Theriogenology, 42 (6). pp. 1003-1016. ISSN 0093-691X http://www.sciencedirect.com/science/article/pii/0093691X9490122Y 10.1016/0093-691x(94)90122-y
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Research Repository
url_provider http://eprints.um.edu.my/
topic QH301 Biology
spellingShingle QH301 Biology
Abdullah, Ramli
Yusoff, M.
Rajikin, M.H.
Ultrastructural studies of developing goat oocytes in-vitro
description The structure and distribution of organelles within developing goat oocytes at various stages of incubation were studied. In oocytes with 5 or more layers of cumulus cells, at 0 h of incubation, the zona pellucida had developed although zonation was not evident. Lipid bodies were present but no mitochondria were observed. At 20 h, the zona pellucida had differentiated into thicker and thinner regions. Clusters of membrane-bound electron-transparent bodies were present in the perivitelline space. The mitochondria were fully developed, distributed evenly and usually in close proximity with dilated endoplasmic reticula. Cortical granules were distributed at the periphery. At 40 h of incubation, a number of mitochondria was hooded. In oocytes of 2 to 4 layers of cumulus cells at 0 h, the zona pellucida was penetrated by cumulus cell processes, and the mitochondria were not well developed. However, in 20-h incubated oocytes, fully developed mitochondria, many of which were hooded, could be observed. Clusters of membrane-bound electron-transparent bodies were also observed, while cortical granules were at the periphery. In cumulus-free oocytes, zonation within the zona pellucida was indistinct. Very few vesicles and lipid bodies were observed. At 20 h, mitochondria were sparsely distributed and were not well developed and lacked cristae. At 40 h, the zona pellucida was less compact, and the membrane-bound electron-transparent bodies were less numerous compared with those of the other groups. Endoplasmic reticula were not dilated, and cortical granules were few and had no definite pattern of distribution.
format Article
author Abdullah, Ramli
Yusoff, M.
Rajikin, M.H.
author_facet Abdullah, Ramli
Yusoff, M.
Rajikin, M.H.
author_sort Abdullah, Ramli
title Ultrastructural studies of developing goat oocytes in-vitro
title_short Ultrastructural studies of developing goat oocytes in-vitro
title_full Ultrastructural studies of developing goat oocytes in-vitro
title_fullStr Ultrastructural studies of developing goat oocytes in-vitro
title_full_unstemmed Ultrastructural studies of developing goat oocytes in-vitro
title_sort ultrastructural studies of developing goat oocytes in-vitro
publishDate 1994
url http://eprints.um.edu.my/8379/
http://www.sciencedirect.com/science/article/pii/0093691X9490122Y
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