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  5. MDCK細胞中metformin對paraquat誘導之甲基乙二醛及D-乳酸濃度的影響
 
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MDCK細胞中metformin對paraquat誘導之甲基乙二醛及D-乳酸濃度的影響

Other Title
The effects of metformin on paraquat-induced methylgloxal and D-lactate concentrations in Madin-Darby canine kidney cells
Type
thesis
Date Issued
2016-07-07
Author(s)
林威抑
Advisor
李仁愛
Subjects
系所名稱:藥學系(碩博士班)
Description
學位別:碩士
語文別:中文
指導教授:李仁愛
共同指導教授:
口試委員:陳福安;林美香
中文關鍵字:巴拉刈;甲基乙二醛;D-乳酸;Metformin
英文關鍵字:Paraquat;Methylglyoxal;D-lactate;Metformin
Abstract
Methylgloxal (MG),為一雙羰基化合物,與糖尿病損傷及細胞凋亡有相關性,過去的研究顯示,腎損傷與MG及其代謝物D-lactate的堆積有相關性。巴拉刈(Parquat, PQ)分佈於腎臟時會產生嚴重損傷,進而使全身的器官傷害加劇,目前臨床上缺乏可以有效地減緩傷害的解毒劑。Metformin(Met),為第二型糖尿病口服藥物,亦為MG的抑制劑。因此我們選用了MDCK細胞,探討在1 mM Parquat 24小時的暴露下給與0.1, 0.5, 3 mM metformin,細胞存活率、MG、D-lactate、L-lactate、Reactive Oxygen Species (ROS)含量及脂質過氧化物 (TBARS)含量的變化。結果顯示,0.5, 3 mM metformin能顯著的提升經巴拉刈損傷之後的存活率(58.53% vs. 66.48%, PQ 1mM組vs. PQ + 0.5mM Met組,58.53% vs.84.42%, PQ 1mM組vs. PQ + 3mM Met組, p<0.05)。0.5 mM metformin 能降低PQ損傷下的MG堆積(0.11 ± 0.03 vs. 0.05 ± 0.03, PQ 1mM 組vs. Met 0.5mM 組, p<0.05),0.5, 3 mM metformin 能降低PQ損傷下的D-lactate堆積 (PQ 組別之D-lactate含量:9.60*10-6 ± 5.14*10-6 , 0.5, 3 mM Met組別之D-lactate含量於偵測極限之下) 。0.5 mM metformin 能降低PQ損傷下的ROS堆積(0.46 ± 0.01 vs.0.35 ± 0.04, PQ 1mM 組vs. Met 0.5mM組, p<0.05)。3 mM metformin 能降低PQ損傷下的TBARS堆積(8.53 ± 4.49 vs. 6.33± 5.51, PQ 1mM 組vs. Met 0.5mM 組, p<0.05)。
綜合上述結果,巴拉刈能降低MDCK細胞存活率並顯著的增加MG、D-lactate、ROS及脂質過氧化物堆積,推測MG及D-lactate的代
謝也許與PQ的中毒機轉有相關性。另一方面,在我們的實驗結果則觀察到,metformin能提高巴拉刈損傷之下MDCK細胞的存活率並顯著的降低PQ損傷所誘導的MG、D-lactate、ROS及脂質過氧化物堆積。
URI
https://203.71.86.71/handle/123456789/57648

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