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  5. 5,7,3’-O-三乙醯橙皮素壓制卵蛋白敏感化及挑釁的小白鼠之氣道過度反應
 
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5,7,3’-O-三乙醯橙皮素壓制卵蛋白敏感化及挑釁的小白鼠之氣道過度反應

Other Title
Hesperetin-5,7,3’-O-triacetate suppresses airway hyperresponsiveness in ovalbumin-sensitized and challenged mice
Type
thesis
Date Issued
2015-07-22
Author(s)
陳紀吏
Advisor
楊幼蘭
柯文昌
Subjects
系所名稱:醫學檢驗暨生物技術學系所
Description
學位別:碩士
語文別:中文
指導教授:楊幼蘭
共同指導教授:柯文昌
口試委員:柯信國;莊校奇;施崇鴻
中文關鍵字:氣道過度反應;氣道阻力;5,7,3’-O-三乙醯橙皮素;免疫球蛋白E;肺動態順應性;卵蛋白
英文關鍵字:Airway hyperresponsiveness;Airway resistance;Hesperetin-5,7,3’-O-triacetate;Immunoglobulin E;Lung dynamic compliance;Ovalbumin
Abstract
我們最近報告Hesperetin-5,7,3'-O-triacetate (HTA)可同時抑制phosphodiesterase (PDE)3/4,而治療係數為20.8,但是否有抗氣喘及治療慢性阻塞性肺疾病(chronic obstructive pulmonary disease, COPD)的作用,尚不得而知。本研究採用FlexiVent system以評估麻醉卵蛋白敏感化又經挑釁的小白鼠,因methacholine引起的氣道過度反應,在airway resistance (RL) 及 lung dynamic compliance (Cdyn)測定後,這些小白鼠立即抽取肺泡灌洗液(bronchoalveolar lavage fluid, BALF)及血液,為瞭解這種方便的方法是否可行,我們以roflumilast當參考藥物,roflumilast是PDE4的選擇性抑制劑,目前己被歐美核准做為嚴重COPD輔佐治療的支氣管擴張劑。
結果顯示,口服HTA 100 µmol/kg或對照藥roflumilast 5 mg/kg分別與其control組比較,有意義地降低RL値而提高Cdyn值,也能有意義地降低肺泡灌洗液及血清中total 及ovalbumin-specific IgE的含量。而口服HTA 300 µmol/kg或roflumilast 1~10 mg/kg會有意義地縮短xylazine/ketamine所引起的麻醉時間,推測這些劑量會有噁心、嘔吐及胃酸分泌過多的副作用。由於RL 及Cdyn測定後,立即抽取肺泡灌洗液及血液,結果顯示HTA 30~100 µmol/kg (p.o),能抑制總發炎細胞、嗜酸性白血球、嗜中性白血球、淋巴球和巨噬細胞的增加,但roflumilast 1~5 mg/kg (p.o.) 不會。而細胞激素之對照組只有 interleukin (IL)-5與non-challenged group比有意義地增加,顯示細胞激素的釋放至少需要再兩天。
URI
https://203.71.86.71/handle/123456789/57252

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