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ダパグリフロジンの胚毒性および酸化影響:ニワトリ胚モデルを用いた用量依存的研究
Farwa Malik1, Shazia Perveen1, Imran Haider2,3
1Department of Zoology, The Women University Multan, Mattital Campus, Multan, Pakistan.
Journal of applied toxicology : JAT
|January 27, 2026
まとめ
ダパグリフロジン、糖尿病治療薬SGLT2阻害薬は、ニワトリ胚において用量依存的な催奇形性を示す。高用量では有意な死亡率、発生異常、臓器損傷を引き起こし、妊娠リスクを示唆する。
科学分野:
- 薬理学
- 発生毒性学
- 発生学
背景:
- ダパグリフロジンは、2型糖尿病に対して広く処方されているSGLT2阻害薬である。
- 初期発生における催奇形性ポテンシャルは十分に理解されていない。
- 妊娠中の薬剤安全性の理解は極めて重要である。
研究 の 目的:
- ダパグリフロジンの用量依存的な催奇形性効果を調査すること。
- ニワトリ胚モデルを用いて、初期発生段階におけるダパグリフロジンの安全性を評価すること。
主な方法:
- 発生3日目のニワトリ胚にダパグリフロジン(1.0-2.5 mg/mL)を投与した。
- 形態計測分析、組織学的検査、酸化ストレスアッセイ(DPPH、SOD、CAT)を実施した。
- 体重、生存率、臓器組織病理、活性酸素種(ROS)レベルを含む発生エンドポイントを評価した。
主要な成果:
- ダパグリフロジンは用量依存的な体重減少(最大47%)と死亡率の増加(2.5 mg/mLで40%)を引き起こした。
- 組織学的所見には、肝脂肪症、肺気腫、心臓炎症、神経アポトーシス、血管異常が含まれた。
- 活性酸素種(ROS)レベルの上昇と有意なラジカル捕捉活性は、酸化ストレスが主要な媒介者であることを示した。
結論:
- ダパグリフロジンは、非哺乳類脊椎動物モデルにおいて用量依存的な催奇形性を示す。
- 本所見は、妊娠中のダパグリフロジン使用に関連する潜在的リスクを示唆する。
- ヒトへの健康影響を評価するためには、さらなる哺乳類での研究が必要である。
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