Dielectrophoretic field-flow fractionation system for detection of aquatic toxicants.
Dielectrophoretic field-flow fractionation system for detection of aquatic toxicants.
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DOI:
10.1021/ac801095p
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发表时间:
2008-10-15
影响因子:
7.4
通讯作者:
Gascoyne, Peter
中科院分区:
文献类型:
--
作者:
Pui-ock, Sittisak;Ruchirawat, Mathuros;Gascoyne, Peter
Dielectrophoretic field-flow fractionation (dFFF) was applied as a contact-free way to sense changes in the plasma membrane capacitances and conductivities of cultured human HL-60 cells in response to toxicant exposure. A micropatterned electrode imposed electric forces on cells in suspension in a parabolic flow profile as they moved through a thin chamber. Relative changes in the dFFF peak elution time, reflecting changes in cell membrane area and ion permeability, were measured as indices of response during the first 150 min of exposure to eight toxicants having different single or mixed modes of action (acrylonitrile, actinomycin D, carbon tetrachloride, endosulfan, N-nitroso-N-methylurea (NMU), paraquat dichloride, puromycin, and styrene oxide). The dFFF method was compared with the cell viability assay for all toxicants and with the mitochondrial potentiometric dye assay or DNA alkaline comet assay according to the mode of action of the specific agents. Except for low doses of nucleic acid-targeting agents (actinomycin D and NMU), the dFFF method detected all toxicants more sensitively than other assays, in some cases up to 105 times more sensitively than the viability approach. The results suggest the dFFF method merits additional study for possible applicability in toxicology.
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影响因子:
3.4
作者:
Huang, Y;Wang, XB;Gascoyne, PRC
通讯作者:
Gascoyne, PRC
DOI:
10.1152/ajpcell.1999.276.4.c907
发表时间:
1999-04-01
影响因子:
5.5
作者:
Bertrand, CA;Laboisse, CL;Hopfer, U
通讯作者:
Hopfer, U
影响因子:
12.8
作者:
FERNANDEZ, A;TEJEDOR, C;CHORDI, A
通讯作者:
CHORDI, A
DOI:
10.1016/0005-2736(87)90276-8
发表时间:
1987-06-12
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子:
--
作者:
GEIER, BM;WENDT, B;ZIMMERMANN, U
通讯作者:
ZIMMERMANN, U
DOI:
10.1089/152581699319939
发表时间:
1999-10-01
期刊:
JOURNAL OF HEMATOTHERAPY & STEM CELL RESEARCH
影响因子:
--
作者:
Huang, Y;Yang, J;Gascoyne, PRC
通讯作者:
Gascoyne, PRC