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    題名: 乙醛去氫?基因缺陷合併高脂飲食惡化非酒精性脂肪肝疾病嚴重度
    Aldehyde Dehydrogenase Gene Mutation Combine with High Fat Diet to Exacerbate Non-alcoholic Fatty Liver Disease
    作者: 楊琇羽
    YANG, HSIU-YU
    貢獻者: 代謝與肥胖科學研究所碩士班
    邱慶豐
    莊曉莉
    關鍵詞: 非酒精性脂肪肝疾病;乙醛去氫?;腸道菌
    Non-alcoholic fatty liver disease;Mitochondrial aldehyde dehydrogenase 2;gut microbiota
    日期: 2023-06-16
    上傳時間: 2023-12-07 09:35:47 (UTC+8)
    摘要: 非酒精性脂肪肝疾病 (non-alcoholic fatty liver disease, NAFLD) 是非酒精和其他明確因素所致的肝臟疾病的總稱,全球盛行率約為25%,其病程最終會導致肝癌的發生。乙醛去氫? ( mitochondrial aldehyde dehydrogenase 2, ALDH2) 是表現於肝臟中協助人體代謝酒精的重要酵素,主要功能是酒精代謝途徑中乙醛代謝為乙酸的過程。ALDH2等位基因經常在外顯子12 (exon 12) 的位置產生單點的突變,東亞族群中約有40%的人有ALDH2基因突變的情形。過去研究結果顯示ALDH2基因突變會惡化高脂飲食引起的NAFLD並且改變小鼠腸道菌相組成。目前並沒有研究表明NAFLD、ALDH2 基因缺陷、飲食菌相四者間的相關性,因此本研究的目的是探討NAFLD、ALDH2基因突變、飲食和菌相的關聯性。本篇研究首先給予野生型C57BL/ 6JNarl 小鼠 (WT) 和 ALDH2 *1/*2基因缺陷鼠 (KI) 合併標準飲食 (STD) 與高脂飲食 (HFD),觀察ALDH2基因缺陷合併不同的飲食對小鼠NAFLD情形的影響;並且藉由共居的形式 (housing-condition) 及糞群移植 (Fecal microbiota transplantation, FMT) 的實驗,進一步證明腸道菌組成是影響NAFLD的關鍵因素。結果表明ALDH2 基因缺陷合併高脂飲食確實會惡化NAFLD的情形,機制可能與影響胰島素阻抗相關腸道菌群組成有關,未來仍需要更多實驗來證明NAFLD、ALDH2 基因缺陷、飲食菌相四者間的相關性,提供針對ALDH2基因缺陷族群NAFLD另一個診斷的方式。
    Non-alcoholic fatty liver disease (NAFLD) is a disease which content whole spectrum of liver disease. There is about 25% people have NAFLD in the worldwide. Mitochondrial aldehyde dehydrogenase 2 (ALDH2) is one enzyme for ethanol metabolism principally expressed in liver. ALDH2 gene polymorphism which cause by a single point mutation in exon 12 is a high prevalence gene mutation in worldwide. The prevalence of ALDH2 gene mutation is about 40% in Asian. Our previous study found that ALDH2 gene mutation with high fat diet (HFD) may progress NAFLD and change gut microbiota composition. But correlation among NAFLD, ALDH2 mutation, diet and gut microbiota still unclear. To reveal correlation of them, we fed C57BL/6JNarl male mice (WT) and ALDH2*1/*2 knock-in male mice (KI) standard diet (STD) or HFD to find out if gene mutation and diet would affect NAFLD symptom. Then we established co-housing condition and used fecal microbiota transplant (FMT) to prove if gut microbiota is a key factor of NAFLD. Result showed that ALDH2 gene mutation with HFD could exacerbate NAFLD through alter mice insulin resistance-related gut microbiota composition. However, it need more investigation to evidence NAFLD, ALDH2 mutation, diet and gut microbiota correlation.
    描述: 碩士
    指導教授:邱慶豐
    共同指導教授:莊曉莉
    委員:邱慶豐
    委員:莊曉莉
    委員:黃文經
    委員:王偉
    委員:黃士懿
    資料類型: thesis
    顯示於類別:[代謝與肥胖科學研究所] 博碩士論文

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