Bipyridylium herbicide toxicity in vitro: comparative study of the cytotoxicity of paraquat and diquat toward the pulmonary alveolar macrophage.
Bipyridylium herbicide toxicity in vitro: comparative study of the cytotoxicity of paraquat and diquat toward the pulmonary alveolar macrophage.
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联吡啶鎓除草剂体外毒性:百草枯和敌草快对肺泡巨噬细胞细胞毒性的比较研究。
DOI:
10.1080/15287398609530880
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发表时间:
1986
期刊:
影响因子:
--
通讯作者:
Stevens,JB
中科院分区:
文献类型:
--
作者:
Wong,RC;Stevens,JB
In vitro exposure of adult rat alveolar macrophages to either paraquat or diquat resulted in concentration dependent cytotoxicity (cell death). The herbicide paraquat, however was statistically significantly more potent toward these cells than was diquat. The LC50 value for paraquat (8‐h exposure, 37°C) was determined to be 0.94 mM [95% confidence interval (C.I.) 0.79–1.12 mM], whereas the corresponding LC50 value for diquat was 1.97 mM (C.I. 1.58–2.51 mM).Interestingly, diquat was shown to enter these cells to a much greater extent than was paraquat. The latter data, while seemingly contradictory to the above findings, is consistent with other reported findings in this study that show that cell respiration, as measured by loss of oxygen consumption, was more sensitive to diquat than it was to paraquat. Also, only paraquat cytotoxicity was found to be dependent on oxygen tension and could be altered by the presence of antioxidant enzymes in the culture medium. Both compounds, however, were found to be equipotent toward purified mitochondria. Both paraquat and diquat were able to uncouple oxidative phosphory‐lation and induce active oxygen species (superoxide anions and hydrogen peroxide) from this organelle. It is concluded that free‐radical pathology is the most likely mechanism of action by which paraquat is cytotoxic toward these cells, but that diquat poisoning probably originates from some other mode of action.
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DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Murray,KJ;El-Maghrabi,MR;Kountz,PD;Lukas,TJ;Soderling,TR;Pilkis,SJ
通讯作者:
Pilkis,SJ
DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Marker,AJ;Colosia,AD;Tauler,A;Solomon,DH;Cayre,Y;Lange,AJ;el-Maghrabi,MR;Pilkis,SJ
通讯作者:
Pilkis,SJ
DOI:
--
发表时间:
1983
期刊:
Biochimica et Biophysica Acta
影响因子:
--
作者:
G. Lawrence;D. G. Walker;I. Trayer
通讯作者:
I. Trayer
DOI:
10.1016/s0021-9258(19)35431-6
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
M. R. El;Jo Pilkiss;Guy D’Angelos;Ann D. Colosias;Jo;Blair A. FraserlI;Simon J. Pilkiss
通讯作者:
Simon J. Pilkiss
DOI:
--
发表时间:
1984
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Shelness,GS;Williams,DL
通讯作者:
Williams,DL