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  5. 血清中新穎性抗4-羥基-2-壬烯醛修飾胜肽加成物之自體抗體同型於 類風濕關節炎患者之探討
 
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血清中新穎性抗4-羥基-2-壬烯醛修飾胜肽加成物之自體抗體同型於 類風濕關節炎患者之探討

Other Title
The investigation of autoantibody isotypes against
4-hydroxy-2-nonenal-modified peptide adducts in serum
from rheumatoid arthritis
Type
thesis
Date Issued
2017-07-18
Author(s)
呂宜穎
Advisor
劉佳宜
林景堉
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:劉佳宜
共同指導教授:林景堉
口試委員:張棋楨;陳威戎;廖辰中
中文關鍵字:類風溼性關節炎;氧化壓力;4-羥基-2-壬烯醛;自體抗體
英文關鍵字:Rheumatoid arthritis;Oxidative stress;4-Hydroxy-2-nonenal;Autoantibody
Abstract
類風溼性關節炎 (Rheumatoid Arthritis) 是一種慢性的自體免疫疾病,其病程及治療造成個人及社會巨大的負擔。經統計目前類風溼性關節炎約影響全世界百分之一的總人口數,且盛行率和死亡率都在持續上升,因此在類風溼性關節的致病機轉及檢測治療都是研究的重要課題之一。發炎關節內的氧化壓力所產生自由基,會誘發自體免疫破壞結締組織導致類風濕滑膜炎。其中一種經由ώ6不飽和脂肪酸過氧化的產物:4-羥基-2-壬烯醛(4-hydroxy-2-nonenal;HNE),具高生物活性親電子基,會與體內DNA及蛋白質等反應,研究顯示其與許多疾病相關如類風濕性關節炎、紅斑性狼瘡、糖尿病、酒精性肝病、神經退化疾病、心血管疾病及癌症。
本研究中鑑定出,在台灣女性類風濕性關節炎患者、退化性關節炎患者及健康人中,具差異表現的四條4-羥基-2-壬烯修飾胜肽加成物,並驗證其抗體在體內是否有差異。之前研究中挑選九對檢體經過刀豆素A親和層析法、一維凝膠電泳和奈米級液相層析串聯質譜分析結果,以PEAKS 7軟體重新分析,篩選出4個表現量有差異的4-羥基-2-壬烯醛修飾胜肽加成物:Complement factor H 1211–1230、haptoglobin 78–108,、Ig kappa chain C region1–18及prothrombin328–345。
更進一步測試55位類風濕性關節炎患者、35位退化性關節炎患者及55位健康人中,血清4-羥基-2-壬烯醛-蛋白加成物總含量及抗4-羥基-2-壬烯醛修飾胜肽加成物抗體含量。結果顯示類風濕性患者血清中4-羥基-2-壬烯醛-蛋白加成物,顯著高於健康者,且蛋白量本身無顯著差異。而血清中抗4-羥基-2-壬烯醛修飾胜肽加成物IgM,尤其是haptoglobin 78–108 及Ig kappa chain C region1–18兩組合成修飾胜肽,在三組人中能明顯區分,ROC曲線下面積達0.84–0.94,靈敏度83.6–89.1%,特異性達76.4-80%,具有很好的診斷力。顯示表現差異之4-羥基-2-壬烯醛-胜肽加成物之自體抗體可以作為類風溼性關節炎的診斷生物標記。
URI
https://203.71.86.71/handle/123456789/57955

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