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博碩士論文 etd-0817105-001739 詳細資訊
Title page for etd-0817105-001739
論文名稱
Title
多溴聯苯醚 (PBDEs)對單孔蚓 (Monopylephorus limosus)之存活與蛋白質表現之影響
Toxic effects of polybrominated diphenyl ethers (PBDEs) on survival rate and proteomics expression of Monopylephorus limosus
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
95
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2005-07-25
繳交日期
Date of Submission
2005-08-17
關鍵字
Keywords
蛋白質表現、單孔蚓、存活率、多溴聯苯醚
protein expression, survival rate, Monopylephorus limosus, PBDEs
統計
Statistics
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中文摘要
多溴聯苯醚 (polybrominated diphenyl ether,PBDEs)為溴化阻燃劑的一種,近30年來已被廣泛地運用,但目前仍少有研究探討其對水生底棲生物之毒性影響。單孔蚓是台灣的常見水生寡毛類,且為重要餌料生物,故本研究探討PBDEs對單孔蚓的存活率與蛋白質表現之影響。將單孔蚓曝露於BDE-47 (tetra-BDE)與BDE-183 (hepta-BDE)中,以單孔蚓之體重變化、產卵繭數、存活率及蛋白質表現來評估BDE-47與BDE-183之毒性。結果顯示,經兩週處理後, BDE-47各濃度皆不影響單孔蚓體重、生殖與存活率;曝露八週後,僅700 ng/g BDE-47與BDE-183組之產卵繭數減少且存活率顯著降低(p<0.05),其存活率分別為48±14與3±3%,1-100 ng/g BDE-47與BDE-183對存活率則無顯著影響,BDE-47與BDE-183之LC50、LT50分別為2311與169 ng/g、47與19天;由蛋白質二維電泳之叢集分析結果得知100 ng/g BDE-47對40個蛋白質表現的影響與10 ng/g BDE-183相似,表示低濃度BDE-183即與100 ng/g BDE-47有著相似的影響力,皆顯示BDE-183的毒性可能較BDE-47強;而低濃度如1 ng/g BDE-47與BDE-183處理八週不影響單孔蚓之存活率,卻顯著影響其蛋白質表現強度,表示由蛋白質階層來檢視污染物的毒性具較高的敏感度。
Abstract
The current knowledge concerning effects of polybrominated diphenyl ether (PBDEs) on benthic aquatic organisms is still very limited although they have been widely used as fire retardant additives for 3 decades. This study was conducted to evaluate the toxic effects of BDE-47 and BDE-183, the two common congeners of PBDEs in river sediments, on a benthic oligochaete worms, Monopylephorus limosus. The worms were exposed to BDE-47 or to BDE-183 for two or eight weeks. The survival rates of M. limosus decreased significantly when exposed to 700 ng/g dry soil of BDE-47 or BDE-183 for 8 weeks, but not in groups of 1-1000 ng/g BDE-47 for 2 weeks. A total of forty proteins of M. limosus has been expressed and determined by the two-dimensional gel electrophoresis (2-DE). Through the cluster analysis, it was found that the protein expression in the group of 100 ng/g BDE-47 was similar to 10 ng/g BDE-183. The results indicate that the toxicity of BDE-183 was greater than BDE-47 to M.limosus. Although the survival rate of M. limosus was not significantly affected when exposed to BDE-47 or BDE-183 at concentrations of 1 to 100 ng/g, significant differences in protein expression were found. Thus, the analysis of protein expression is more sensitive to detect the toxicological change in M. limosus than the survival test.
目次 Table of Contents
謝辭……………………………………………………… i
中文摘要………………………………………………… ii
英文摘要………………………………………………… iii
目錄……………………………………………………… iv
表目錄…………………………………………………… v
圖目錄…………………………………………………… vi
附錄目錄………………………………………………… vii
第一章 多溴聯苯醚之文獻回顧…………………………1
第二章 前言………………………………………………13
第三章 材料與方法………………………………………17
第四章 結果………………………………………………24
第五章 討論………………………………………………30
參考文獻………………………………………………… 37
附表……………………………………………………… 46
附圖……………………………………………………… 49
附錄……………………………………………………… 65
個人履歷………………………………………………… 87
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