| 研究生: |
鄭佳如 Cheng, Chia-Ju |
|---|---|
| 論文名稱: |
臺灣金線連對前列腺素F2α所誘導老鼠心臟肌原細胞肥大影響之研究 Study of the effects on PGF2α induced hypertrophy of rat cardiac myocytes by Chinese herb Anoectochilus formosanus HAYATA |
| 指導教授: |
麥愛堂
Oi-Tong Mak |
| 學位類別: |
碩士 Master |
| 系所名稱: |
生物科學與科技學院 - 生物科技研究所 Institute of Biotechnology |
| 論文出版年: | 2003 |
| 畢業學年度: | 91 |
| 語文別: | 中文 |
| 論文頁數: | 85 |
| 中文關鍵詞: | 前列腺素 、心室肌肥大 、臺灣金線連 |
| 外文關鍵詞: | prostaglandin, cardiomyocyte hypertrophy, Anoectochilus formosanus HAYATA |
| 相關次數: | 點閱:171 下載:1 |
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前列腺素(prostaglandins;PG)是調節許多生理反應進行的重要媒介物質,幾乎在所有的組織中皆有其存在,不同的前列腺素調控不同的生理功能。從前人研究中已知,前列腺素 F2α(PGF2α)會引起初級心肌細胞的肥大;細胞肥大的定義包括細胞外形的擴張和細胞內總蛋白質合成量的增加。台灣金線連(Anoectochilus formosanus HAYATA.)為蘭科金線連屬多年生草本藥用植物,分佈於亞洲,於台灣600-2500公尺的陰溼林山區可見。金線連在中醫典籍中紀載,具有治療高血壓、急慢性肝炎等效用且對於治療心臟血管方面疾病極具效果。由於目前皆以初級細胞培養來培養初生動物的心室肌細胞作為一種模式來觀察各種刺激訊號對於肥大現象的產生,因此利用胚胎心肌細胞株(H9c2)作為觀察心室肥大的模式。本實驗欲研究PGF2α是否會引發H9c2細胞產生肥大的現象;以及台灣金線連是否能夠治療或保護由PGF2α所誘發之心臟肥大的現象。實驗顯示,PGF2α在1mM的濃度下,培養72小時,其細胞總蛋白質濃度相對於對照組(沒有處理PGF2α)約增加3倍左右。此外,臺灣金線連在治療由PGF2α所引發之心室肥大方面,其有效劑量濃度分別為1 mg/ml(粗萃層)、3 mg/ml(乙酸乙酯層)及4 mg/ml(水層);在預防心室肥大方面,其有效劑量分別為4 mg/ml(粗萃層)、1 mg/ml(乙酸乙酯層)及4 mg/ml(水層)。綜合本研究研果,PGF2α(1μM)確實能引發H9c2細胞產生肥大現象且臺灣金線連對於由PGF2α所引發之心臟細胞肥大確實有其治療及預防保護療效。
Prostaglandins play an important role in regulating many physiologic reactions in mammals and exit in most tissues. In the previous studies, it is shown that prostaglandin F2α (PGF2α) can induce protein synthesis of neonatal rat cardiomyocytes and induce hypertrophy. Cardiac myocyte-derived cell line, H9c2, that maintains a cardiac-specific phenotype and undergoes hypertrophy in response to agonists at Gq-coupled receptors have not been clarified. The aim of this study was focused on whether PGF2a could induce H9c2 cells to undergo hypertrophy, and whether Anoectochilus formosanus HAYATA., a kind of Chinese herb, could cure or protect H9c2 cells from hypertrophy that induced by PGF2α. Results showed that protein concentrations of H9c2 cells after incubating with PGF2α (1μM) for 72 hr was 3 fold higher than control (without PGF2α). It also found that the effective doses of A. formosanus H. for the curing of cell hypertrophy were 1 mg/ml, 3 mg/ml and 4 mg/ml in crude extract, ethyl acetate extract and water extract respectively. Protecting effects of A. formosanus H. were found to be 4 mg/ml, 1 mg/ml and 4 mg/ml in crude extract, ethyl acetate extract and water extract respectively. In conclusion, PGF2α (1μM) can induce hypertrophy of H9c2 cells, and A. formosanus H. contains effective components which could cure and protect H9c2 cells from hypertrophy that induced by PGF2α.
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