AN IMMUNOHISTOCHEMICAL STUDY OF LH-RH AND S-100 PROTEIN IN THE HYPOTHALAMUS AND THE PARS TUBERALIS OF THE ANTERIOR PITUITARY GLAND
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概要
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The distribution of nerve fibers containing luteinizing hormone-releasing hormone (LH-RH) within the median eminence was demonstrated in the 1970's and 1980's. A few LH-RH containing fibers have been also detected in the pars tuberalis (Naik 1975a). The role of these fibers in the pars tuberalis have not been fully elucidated. Adult Wistar-Imamichi male rats were separated into two groups for immunohistochemical study about LH-RH and S100 protein (S-100) and electron microscopy. Specimens including the hypothalamus and the pituitary gland were prepared for the immunohistochemical light microscopic observations, and sagittal serial mirror sections with 5 um thickness were used. Each mirror pair was stained by using antibodies towards LH-RH and S-100 respectively. Sections were obtained from the region 300μm to both sides from the sagittal center. Many LH-RH positive fibers were observed both in the primary plexus and in the hypothalamus that corresponded to the caudal half of the portal vein area of the pars tuberalis. The reaction products for LH-RH were also observed as thin lines with several varicosities in the caudal half of the portal vein area of the pars tuberalis. LH-RH reactions were also observed around the cells that were S-100 positive on their mirror sections. Several cells showing a weak reaction to S-100 were scattered in the pars tuberalis at the approximately center position, while the strong reactions were observed as clusters on 100-300 μm lateral from the sagittal center. It was strongly suggested that LH-RH information was transmitted to the folliculo-stellate cells in the pars tuberalis and the interconnected folliculo-stellate cells transported some signals to modulate LH release from the LH cells within the pars distalis.
- 名古屋市立大学の論文
- 2001-06-01
著者
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佐久間 英輔
名古屋市立大・医・機能解剖
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木村 浩之
The Faculty Of Engineering Hiroshima University
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木村 浩之
The First Department Of Anatomy Nagoya City University Medical School
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佐久間 英輔
The First Department of Anatomy, Nagoya City University Medical School
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吉田 守宏
The First Department Of Anatomy Nagoya City University Medical School
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柳園 隆
The First Department of Anatomy, Nagoya City University Medical School
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栗田 純
The First Department of Anatomy, Nagoya City University Medical School
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栗田 純
The First Department Of Anatomy Nagoya City University Medical School
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柳園 隆
The First Department Of Anatomy Nagoya City University Medical School
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