Endothelin 1-Like Immunoreactivity in the Hypothalamo-Hypophysial System of the Bullfrog, Rana catesbeiana
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概要
- 論文の詳細を見る
We investigated the distribution of endothelin 1 (ET1)-like immuno-reactivity and its colocalization with oxytocin-like immunoreactivity in the hypothalamo-hypophysial system of the bullfrog, Rana catesbeiana. ET1-immunoreactive (ET1-IR) somata were scattered in the preoptic nucleus and exhibited granular appearance. ET1-IR somata were classified into large (average 24 μm in diameter) and small (average 13 μm in diameter) cell types, and these somata extended ET1-IR varicose fibers in the ventro-lateral direction. In the neurohypophysis, dense accumulation of ET1-IR fibers was seen near blood vessels. ET1-IR neurons corresponded to a subpopulation of oxytocin-immunoreactive neurons. These observations suggest that ET1-like peptide is colocalized with a subpopulation of classical neurohypophysial hormones and the peptide may regulate neurohypophysial hormone secretion in the frog, as suggested in the mammalian hypothalamo-hypophysial system.
- 神奈川歯科大学の論文
- 2001-03-31
著者
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Uemura Haruko
Department Of Biology Kanagawa Dental College
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Yamamoto Toshiharu
Department Of Anatomy Shiga University Of Medical Science
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