Somatotrophs and Mammotrophs in Adenohypophysis of Japanese Black Steers: an Immunohistochemical and Morphological Study
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- SATO Takahiro
- Graduate School of Agricultural Science, Tohoku University
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- YAMAGUCHI Takahiro
- Graduate School of Agricultural Science, Tohoku University
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- MATSUZAKI Masatoshi
- Kyushu National Agricultural Experiment Station
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- SUZUKI Atsushi
- Graduate School of Agricultural Science, Tohoku University
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The distribution and proportion of somatotrophs (GH cells) and mammotrophs (PRL cells) were immunohistochemically detailed in the adenohypophysis of pure bred of Japanese Black steers. The animals were divided into four groups of six each of 8, 14, 21 and 28 months-old. The morphometrical analysis was evaluated in four regions of the midsagittal plane - zona tuberalis (ZT), and hind dorsal (HD), fore ventral (FV) and hind ventral (HV) regions. GH cells mainly existed solitarily and densely populated in the HD, and PRL cells were numerously distributed in the FV and HV as various sizes of cell clusters, whereas, in the ZT, the proportion of both GH cells and PRL cells was very low. The proportion of GH cells gradually diminished until 21 months-old and that of PRL cells notably decreased until 28 months-old. However, the distribution pattern of GH cells and PRL cells did not change during 8 to 28 months-old. These results initially showed that GH cells and PRL cells were differentially distributed in the whole adenohypophysis of Japanese Black steers and the proportion declined age-dependently.
収録刊行物
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- 日本畜産学会報
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日本畜産学会報 70 (5), 329-335, 1999
公益社団法人 日本畜産学会
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詳細情報 詳細情報について
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- CRID
- 1390001205196486528
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- NII論文ID
- 130000742872
- 10020392801
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- NII書誌ID
- AN00195188
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- ISSN
- 18808255
- 00215309
- 1346907X
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- NDL書誌ID
- 4858964
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可