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Analysis of the equine ovarian structure during the first twelve months of life by three-dimensional internal structure microscopy
A three-dimensional internal structure microscopy (3D-ISM) can clarify the anatomical arrangement of internal structures of equine ovaries. In this study, morphological changes of the equine ovary over the first 12 months of life were investigated by 3D-ISM in 59 fillies and by histological analysis...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Japanese Society of Veterinary Science
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4710715/ https://www.ncbi.nlm.nih.gov/pubmed/26194605 http://dx.doi.org/10.1292/jvms.14-0539 |
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author | ONO, Mamiko AKUZAWA, Hiroki NAMBO, Yasuo HIRANO, Yuuko KIMURA, Junpei TAKEMOTO, Satoko NAKAMURA, Sakiko YOKOTA, Hideo HIMENO, Ryutaro HIGUCHI, Tohru OHTAKI, Tadatoshi TSUMAGARI, Shigehisa |
author_facet | ONO, Mamiko AKUZAWA, Hiroki NAMBO, Yasuo HIRANO, Yuuko KIMURA, Junpei TAKEMOTO, Satoko NAKAMURA, Sakiko YOKOTA, Hideo HIMENO, Ryutaro HIGUCHI, Tohru OHTAKI, Tadatoshi TSUMAGARI, Shigehisa |
author_sort | ONO, Mamiko |
collection | PubMed |
description | A three-dimensional internal structure microscopy (3D-ISM) can clarify the anatomical arrangement of internal structures of equine ovaries. In this study, morphological changes of the equine ovary over the first 12 months of life were investigated by 3D-ISM in 59 fillies and by histological analysis in 2 fillies. The weight and volume of the paired ovaries initially decreased from 0 to 1 months to 2 to 3 months of age and then significantly increased at 8 to 12 months of age. The ovulation fossa was first observed around the 3rd month and became evident after the 6th month. The number of follicles with a diameter of ≥10 mm and the diameter of the largest follicle increased gradually after 6 months of age. On a volume basis, the medulla accounted for nearly 90% of the whole ovary at 0 to 1 months of age, but significantly decreased from 2 to 3 months of age. The volume of the cortex increased progressively after birth and reached approximately 60% of the total volume at 8 to 12 months of age. This significant development of the cortex coincided with the increased number and size of large follicles observed from 6 months of age. These results suggest that the development of the cortex plays a role in the maturation of the follicles and the equine ovary undergoes substantial morphological changes postnatally until puberty. |
format | Online Article Text |
id | pubmed-4710715 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | The Japanese Society of Veterinary Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-47107152016-01-14 Analysis of the equine ovarian structure during the first twelve months of life by three-dimensional internal structure microscopy ONO, Mamiko AKUZAWA, Hiroki NAMBO, Yasuo HIRANO, Yuuko KIMURA, Junpei TAKEMOTO, Satoko NAKAMURA, Sakiko YOKOTA, Hideo HIMENO, Ryutaro HIGUCHI, Tohru OHTAKI, Tadatoshi TSUMAGARI, Shigehisa J Vet Med Sci Theriogenology A three-dimensional internal structure microscopy (3D-ISM) can clarify the anatomical arrangement of internal structures of equine ovaries. In this study, morphological changes of the equine ovary over the first 12 months of life were investigated by 3D-ISM in 59 fillies and by histological analysis in 2 fillies. The weight and volume of the paired ovaries initially decreased from 0 to 1 months to 2 to 3 months of age and then significantly increased at 8 to 12 months of age. The ovulation fossa was first observed around the 3rd month and became evident after the 6th month. The number of follicles with a diameter of ≥10 mm and the diameter of the largest follicle increased gradually after 6 months of age. On a volume basis, the medulla accounted for nearly 90% of the whole ovary at 0 to 1 months of age, but significantly decreased from 2 to 3 months of age. The volume of the cortex increased progressively after birth and reached approximately 60% of the total volume at 8 to 12 months of age. This significant development of the cortex coincided with the increased number and size of large follicles observed from 6 months of age. These results suggest that the development of the cortex plays a role in the maturation of the follicles and the equine ovary undergoes substantial morphological changes postnatally until puberty. The Japanese Society of Veterinary Science 2015-07-18 2015-12 /pmc/articles/PMC4710715/ /pubmed/26194605 http://dx.doi.org/10.1292/jvms.14-0539 Text en ©2015 The Japanese Society of Veterinary Science http://creativecommons.org/licenses/by-nc-nd/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (by-nc-nd) License. |
spellingShingle | Theriogenology ONO, Mamiko AKUZAWA, Hiroki NAMBO, Yasuo HIRANO, Yuuko KIMURA, Junpei TAKEMOTO, Satoko NAKAMURA, Sakiko YOKOTA, Hideo HIMENO, Ryutaro HIGUCHI, Tohru OHTAKI, Tadatoshi TSUMAGARI, Shigehisa Analysis of the equine ovarian structure during the first twelve months of life by three-dimensional internal structure microscopy |
title | Analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
title_full | Analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
title_fullStr | Analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
title_full_unstemmed | Analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
title_short | Analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
title_sort | analysis of the equine ovarian structure during the first twelve months of
life by three-dimensional internal structure microscopy |
topic | Theriogenology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4710715/ https://www.ncbi.nlm.nih.gov/pubmed/26194605 http://dx.doi.org/10.1292/jvms.14-0539 |
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