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  5. 臺灣民間藥用植物及其成分於骨質疏鬆症之骨重塑活性探討
 
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臺灣民間藥用植物及其成分於骨質疏鬆症之骨重塑活性探討

Other Title
Bone Remodeling Activity of Taiwanese Folk Medicinal Plant and Its Components in Osteoporosis
Type
thesis
Date Issued
2023-12-25
Author(s)
陳芸萱
Advisor
李美賢
Subjects
系所名稱:生藥學研究所碩士班
Publisher
生藥學研究所碩士班
Description
學位別:碩士
關鍵字:骨質疏鬆症; 斑馬魚; 糖皮質素誘導骨質疏鬆; 骨重塑; 分子網路
論文公開日期:2029-01-26
Abstract
骨質疏鬆症是一種骨骼疾病,雖然沒有明顯的臨床症狀,但會增加患者骨折、住院,甚至死亡的風險,因此研究骨質疏鬆症的預防和治療就顯得格外重要。目前骨質疏鬆症的臨床治療藥物都因其副作用而有所限制,而過去曾從天然物中發現具有骨重塑潛力活性的成分,值得進一步開發。LM是一種多年生草本植物,在民間被用作抗發炎劑。本研究旨在開發LM以了解其對骨質疏鬆症的影響。首先,以95%乙醇萃取LM (LME),再以不同濃度之甲醇進行分層萃取,透過全球天然物社會分子網路 (GNPS) 辨識LME分層萃取物的成分組成,其包括異戊烯醇脂質 (prenol lipids)、固醇類 (steroids)、香豆素 (coumarins) 和黃酮類 (flavonoids) 等。為了評估LME分層萃取物的骨重塑活性,體外試驗以NFκ-B配體受體活化劑 (RANKL) 誘導THP-1細胞進行,結果顯示,60%甲醇 (含) 以下之LME分層萃取物沒有細胞毒性;且LME和 60%甲醇分層萃取物 (LME-6) 顯著降低蝕骨細胞之抗酒石酸酸性磷酸酶 (TRAP) 活性。在體內試驗,60%甲醇 (含) 以下之LME分層萃取物不影響斑馬魚幼魚之存活。為了解LME及其化合物對糖皮質素誘導骨質疏鬆症 (GIOP) 之作用,本研究完成GIOP斑馬魚模式建立,LME能顯著改善GIOP斑馬魚模式之脊椎發育率。LME-6透過高效液相層析儀 (HPLC) 分離、純化,並以核磁共振儀 (NMR) 確定化合物1、2、3、4之結構,而在3之預處理下可顯著增加GIOP斑馬魚模式之脊椎發育率。本篇研究發現LM具骨重塑活性,並可為糖皮質素誘導骨質疏鬆症之預防,提供植物新藥的開發策略。
URI
https://203.71.86.71/handle/123456789/9626

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