新生児の心房と心室は,組織特有の分泌経路を通じて心房ナトリウレティックファクターを分泌します
Cell
|December 5, 1986
まとめ
新生児の心臓細胞 (心臓細胞) は,心房内尿素因子 (ANF) を分泌するために異なる経路を使用します. 心房細胞は,制御された放出のためにANFを粒状に貯蔵し,心房細胞は構成的に放出する.
科学分野:
- 心臓病学 心臓病学
- エンドクリノロジー エンドクリノロジー
- 細胞生物学 細胞生物学
背景:
- 頭性尿素因子 (ANF) は,心血管の恒常性にとって極めて重要なペプチドホルモンです.
- 新生児の心臓細胞は,ホルモン分泌のための明確な細胞機構を示しています.
研究 の 目的:
- 新生児の心房および心室心臓細胞におけるANF分泌の微分調節を調査する.
- これらの異なる心臓細胞タイプが採用する特定の分泌経路を解明する.
主な方法:
- 新生児の心房および心房細胞におけるANFの合成,貯蔵,分泌の比較分析.
- 発達の初期における分泌粒子の存在とmRNA/ホルモン濃度の検査.
主要な成果:
- 心房と心室の両方の心臓細胞は,ANFを合成し分泌する.
- 心房細胞は,ANFを分泌小粒に貯蔵し,規制された経路を示しています.
- 静脈細胞には粒子が欠けていて,構成経路経由でANFを素早く分泌する.
- 静脈のANFレベルは,人生の最初の1週間以内に低下します.
結論:
- 新生児の心房および心房内部の心臓細胞は,異なるANF分泌経路 (調節された対構成) を利用します.
- ANFの分泌の発達の変化は,生理学的要求の進化を反映しています.
- ホルモン分泌の組織特異的調節は,新しい適応反応である.
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