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  • 學位論文

探討高鹼度灰渣萃取液常見LDH細胞毒性值出現異常之成因

Investigation the Sources of Abnormal LDH Cytotoxicity Response at the Extracts of High Alkali Ash Wastes

指導教授 : 黃武章

摘要


本研究主要以非洲綠猴腎細胞測試高鹼性灰渣萃取液之細胞毒性,並利用LDH assay 、 MTT assay 、以及流式細胞儀來探討乳酸脫氫鋂方法會出現異常的原因(相對毒性百分比>100、<0)。結果顯示灰渣萃取液的離子濃度太高,導致細胞暴露於樣品便會造成細胞的大量死亡,完全無自發釋放之乳酸脫氫鋂,故會造成實驗值低於低控制組,便產生負值,如此便完全無法看出細胞毒性的大小,故以灰渣萃取液樣品:培養基比例為1:9混合後再行實驗對於本實驗之萃取液會較恰當。 依1:9之配比混和後再進行細胞毒性試驗,較能看出細胞毒性之大小,會由Day 1的較高毒性值遞減至負值,再在漸增至正值,推測會造成這些現象的原因是,這些灰渣萃取液在Day 1及Day 2有大量的鹼金屬與鹼土金屬溶出,造成了部分細胞的壞死,於是在Day 1及Day 2會有較高的乳酸脫氫鋂釋出;在Day 3之後數值會變負值再轉回正值,推測是由於重金屬的溶出,導致部分的細胞可能有停滯細胞週期停滯或是凋亡的現象,故使得自發性的乳酸脫氫鋂少於低控制組,才會有負值的產生。

並列摘要


In the present study, Vero cell line was used in order to evaluate the Cytotoxicity effects of high alkaline ash extracts. lactate dehydrogenase (LDH) assay, MTT assay, and flow cytometry were used to investigate the sources of abnormal LDH response (REP%> 100, REP% <0) using extracts of such kind of ash wastes. The results showed that the ion concentrations of the ash extracts were too high, resulting in a large number of cell death caused by the exposure of the cells to the different waste extracts. Non-spontaneous release of LDH caused the experimental value of the waste extracts to be lower than the control. Because negative values of REP% were obtained, the samples were diluted in a ratio of 1:9 (Sample:medium) to determined the cytotoxicity of Vero cells. In Day1the cytotoxicity had a positive value, however it then changed to a negative value and finally became positive again. We think that this phenomenon might be caused by the high amount of alkali metals and alkaline earth metal leaching within Day1 and Day2, resulting in the necrosis of some cells. The negative values on Day 3might have been due to the heavy metal leaching which cause cell cycle arrest or apoptosis.

並列關鍵字

Cytotoxicity VERO cell lactate dehydrogenase

參考文獻


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被引用紀錄


吳唯菱(2013)。新興污染物鍶與有機酸結合動力及其螯合物之毒性研究〔碩士論文,國立屏東科技大學〕。華藝線上圖書館。https://doi.org/10.6346/NPUST.2013.00138

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