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研究生:薛水上
研究生(外文):Shui-Sang Hsuen
論文名稱:誘發性一氧化氮合成於人類口腔上皮癌前期病灶及鱗狀上皮細胞癌與DMBA誘發倉鼠頰囊袋鱗狀上皮細胞癌之免疫組織化學及反轉錄聚合連鎖反應之研究
論文名稱(外文):Inducible Nitric Oxide Synthase Expression in Human Oral Premalignant and Malignant Epithelial Lesions and DMBA-Induced Hamster Buccal Pouch Carcinomas:Immunohistochemical and RT-PCR Studies
指導教授:林立民林立民引用關係
指導教授(外文):Li-Min Lin
學位類別:碩士
校院名稱:高雄醫學大學
系所名稱:牙醫學研究所
學門:醫藥衛生學門
學類:牙醫學類
論文種類:學術論文
論文出版年:2001
畢業學年度:89
語文別:中文
論文頁數:71
中文關鍵詞:誘發性一氧化氮合成免疫組織化學染色反轉錄聚合連所反應原位反轉錄聚合連所反應人類頰黏膜上皮癌前期及癌病灶DMBA誘發倉鼠頰囊袋上皮細胞癌
外文關鍵詞:Inducible nitric oxide synthaseImmunohistochemistryRT-PCRIS RT-PCRHuman buccal premalignant and malignant lesionsDMBA-induced hamster buccal pouch carcinoma
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一氧化氮(NO)於發炎及癌化過程中扮演關鍵角色。一氧化氮合成(nitric oxide synthase,NOS)具有三種異構型態 (isoform ),分別是內皮性NOS(endothelial NOS,eNOS),神經性NOS(neuronal NOS,nNOS),及誘發性NOS(inducible NOS,iNOS)。目前許多關於癌症的研究都將焦點集中在iNOS上,而iNOS與口腔癌之研究仍然未被詳細探討。故本論文之研究目的是探討人類口腔癌前期與上皮癌病灶,及以DMBA誘發倉鼠頰囊袋黏膜癌化過程中誘發性一氧化氮合成(iNOS)的免疫組織化學及細胞中mRNA的角色扮演。動物實驗方面,將33隻雄性年輕成年倉鼠(Syrian golden hamsters)以隨機方式分成三大組:13隻以0.5 % DMBA塗抹為實驗組,10隻以礦物油塗抹為對照組,及10隻不做任何處理(對照組)。人體檢體方面所收集之組織病理診斷及樣本數如下:輕微口腔上皮發育異常(mild oral epithelial dysplasia,mild OED)10例,中度(moderate)及嚴重(severe)口腔上皮發育異常10例;黏膜下纖維化(submucous fibrosis)10例;疣狀增生(verrucous hyperplasia)10例;疣狀上皮癌(verrucous carcinoma)10例;分化良好(well-differentiated)鱗狀上皮細胞癌(squamous cell carcinoma,SCC)10例,中度分化(moderate-differentiated SCC)及分化不全(poor-differentiated)鱗狀上皮細胞癌(SCC)10例;正常口腔黏膜(normal oral mucosa)5例。本研究發現一氧化氮合成在人類癌前期病變及惡性上皮癌病灶與DMBA誘發倉鼠頰囊袋上皮癌均可以見到細胞質及細胞核的染色呈陽性反應。人類正常口腔黏膜與未經處理及以礦物油處理的倉鼠頰囊袋黏膜中沒有誘發性一氧化氮合成的表現。另一方面,於DMBA誘發倉鼠頰囊袋癌病灶與人類口腔癌前期病變及惡性上皮癌病灶均可見到誘發性一氧化氮合成mRNA的表現。而未經處理及以礦物油處理的倉鼠頰囊袋黏膜與人類正常口腔黏膜中誘發性一氧化氮合成mRNA均未表現。這些發現可證實誘發性一氧化氮合成與口腔癌的發生有關聯。

Nitric oxide (NO) plays a key role in the processes of inflammation and carcinogenesis. Three isoforms of nitric oxide synthase (NOS) have been identified: endothelial NOS (eNOS), neuronal NOS (nNOS), and inducible NOS (iNOS). To date, most cancer studies are concerned with iNOS. The role of iNOS in the oral carcinogenesis remains to be elucidated. The purpose of the present study is to investigate the immunohistochemical and mRNA expression of iNOS in human oral premalignant & malignant epithelial lesions and DMBA-induced hamster buccal carcinomas. Thirty-three outbred adult young (six weeks old) male Syrian golden hamsters were randomly divided into three groups: DMBA (0.5%) painted group(n=13), mineral oil-treated group(n=10), and untreated group(n=10). Surgical human oral specimens with the following histological diagnoses were collected: mild (n=10), moderate and severe (n=10) dysplasia; submucous fibrosis (n=10); verrucous hyperplasia (n=10), verrucous carcinoma (n=10); squamous cell carcinoma (well-differentiated, n=10; moderate-differentiated and poor-differentiated, n=10); normal oral mucosa (n=5). Cytoplasmic and nuclear stainings were observed in both human oral premalignant & malignant epithelial lesions and DMBA-induced hamster buccal carcinomas. Inducible NOS staining was not demonstrated in the human normal oral mucosa, in the untreated or mineral-oil treated hamster pouches. On the other hand, iNOS mRNA expression was demonstrated in all the DMBA-induced carcinomas as well as in the majority of human oral premalignant and malignant epithelial lesions. No iNOS mRNA was detected in the untreated, mineral-oil treated pouches and the human normal oral mucosa. These findings suggested that iNOS may play an important role in the oral carcinogenesis.

壹、摘要
中文摘要
英文摘要
貳、緒論
參、文獻回顧
肆、材料與方法
伍、結果
陸、討論
柒、圖表
捌、參考文獻

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