Differentiation of Mammosomatotrophs in Swine Adenohypophysis
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概要
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The existence and distribution of mammasomatotrophs (MS cells) containing growth hormone (GH) and prolactin (PRL) were detailed in swine adenohypophysis. MS cells were positively identified and were first recognized in the adenohypophysis of fetuses with 33.0 cm in body length, when GH cells existed earlier and PRL cells occurred. The proportion of MS cells transiently increased in the glands of three month-old females and were densely populated in the fore ventral (FV) and the hind ventral (HV) region except for the zona tuberalis (ZT). The distribution was similar to GH cells and PRL cells. MS cells were divided into three subtypes by the intracellular intensity of both GH and PRL stainings. Type I MS cells which were strongly stained with anti-GH antiserum, constituted 100% of MS cells in fetuses and the proportion decreased with age in females. Type II MS cells which were evenly stained with both anti-GH and PRL antisera were detected in all animals except for fetuses, and were proportioned moderately. Type III MS cells which contained more PRL than GH existed predominately in three and six month-old females, castrated males and aged males. The findings indicated that an amount of GH and PRL within MS cells was changeable in response to physiological conditions. The results suggest that GH cells may transform into PRL cells. with the MS cell acting as an intermediate cell in swine adenohypophysis, and that the GH and PRL in MS cells are synthesized synchronously or asynchronously according to the secretory activities.
- 日本組織細胞化学会の論文
著者
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Yamaguchi T
Graduate School Of Agricultural Science Tohoku University
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Yamaguchi T
Shizuoka Univ. Hamamatsu
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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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Yamaguchi Takahiro
Laboratory of Functional Morphology, Department of Animal Production Science, Graduate School of Agr
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Ide Yohichi
Pharmaceutical Development Laboratory, Kirin Brewery Co., Lid.
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Sato Takahiro
Laboratory of Functional Morphology, Department of Animal Production Science, Graduate School of Agr
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Satoh Takuya
Laboratory of Functional Morphology, Department of Animal Production Science, Graduate School of Agr
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Sato T
Graduate School Of Agricultural Science Tohoku University
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Matsuzaki Masatoshi
Department Of Animal And Grassland Research National Agricultural Research Center For Kyushu Okinawa
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Ide Yohichi
Pharmaceutical Development Laboratory Kirin Brewery Co. Lid.
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Yamaguchi T
Department Of Animal Biology Graduate School Of Agricultural Science Tohoku University
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Yamaguchi T
Ntt Network Innovation Lab. Kanagawa Jpn
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Yamaguchi Takahiro
Laboratory Of Functional Morphology Department Of Animal Production Science Faculty Of Agriculture T
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YAMAGUCHI Takahiro
Laboratory of Animal Monphology, Faculty of Agriculture, Tohoku University
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