Genotoxicity of humic acid in cultured human lymphocytes and its interaction with the herbicides

G. Ribas, E. Carbonell, A. Creus, N. Xamena, R. Marcos

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The genotoxicity of humic acid and its possible interaction with the herbicides alachlor and maleic hydrazide have been evaluated in cultured human lymphocytes from two donors. Humic acid and the two herbicides have been tested (alone and combined) for sister-chromatid exchange (SCE) induction. In addition, the effect of two different preincubation times, 2 and 24 hr, was analyzed. The results indicate that humic acid and the herbicides alochlor and maleic hydrazide appear to significantly enhance the frequency of SCE, the effect of the herbicides being more pronounced. With reference to the possible interaction of humic acid with the herbicides, the results do not show a common pattern, although mainly an additive effect was obtained. Nevertheless, there is some evidence suggesting that antagonism may occur, especially in the combined treatment of humic acid and maleic hydrazide.
Idioma originalEnglish
Pàgines (de-a)272-276
RevistaEnvironmental and Molecular Mutagenesis
Estat de la publicacióPublicada - 29 de maig 1997


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