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  5. 過量異丙酚誘導周邊血液嗜中性球發生細胞泛凋亡
 
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過量異丙酚誘導周邊血液嗜中性球發生細胞泛凋亡

Other Title
Propofol Overdose Causes Peripheral Neutrophils to Undergo PANoptosis
Type
thesis
Date Issued
2025-06-11
Author(s)
劉育綾
Advisor
林秋烽  
Subjects
系所名稱:醫學科學研究所碩士班
Publisher
醫學科學研究所碩士班
Description
學位別:碩士
口試委員:邢中熹; 陳嘉玲; 林秋烽
關鍵字:異丙酚、血液、嗜中性球、細胞毒性、細胞泛凋亡、脂質
Abstract
異丙酚 (Propofol) 是一種在臨床上廣泛使用的麻醉劑,但若使用不當可能導致異丙酚輸注症候群 (PRIS)。PRIS的特徵包括血脂異常和細胞毒性損傷,特別是對周邊血液嗜中性球的影響。本研究利用體外全血模型,結合流式細胞儀分析,揭示了PRIS引發細胞毒性的機制。研究發現顯著的油滴累積和嗜中性球死亡增加,細胞顆粒性與油滴表現水平密切相關。通過裂解型caspase-3檢測和蛋白質轉漬法證實了細胞凋亡的發生;同時,壞死性凋亡和細胞焦亡則與 pRIPK1和裂解型caspase-1表達的增加有關。我們建立了多色流式細胞儀分析方法顯示細胞泛凋亡 (PANoptosis) 的增加,其特徵是多種細胞死亡途徑的同時激活。抑制脂肪酶可減少脂肪分解和油滴的累積,強調脂肪酸在PANoptosis誘導中的作用。研究還觀察了活性氧物質 (ROS),特別是與線粒體相關的ROS顯著升高,並與油滴水平相關。線粒體功能障礙,也就是由粒線體跨膜電位的喪失,可以透過ROS抑制劑減輕,且這些抑制劑也能減少PANoptosis的發生。這些發現表明,油滴和脂肪酸的累積以及氧化壓力驅動PRIS中PANoptosis的發生,也為減輕其細胞毒性效應提供了潛在的治療靶點。
URI
https://203.71.86.71/handle/123456789/9232

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