Genotoxic evaluation of the herbicide trifluralin on human lymphocytes exposed in vitro

G. Ribas, J. Surrallés , E. Carbonell, N. Xamena, A. Creus, R. Marcos
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引用次数: 23

Abstract

The herbicide trifluralin was evaluated for genotoxicity in cultured human peripheral blood lymphocytes. Sister-chromatid exchanges (SCE), chromosome aberrations (CA) and micronuclei (MN) were scored as genetic endpoints. To detect eventual metabolic modification in the genotoxicity of this herbicide, the cultures for SCE and MN demonstration were also treated with S9 fraction. From our results we can conclude that trifluralin was able to exert a weak cytotoxic effect, reducing both the proliferative rate index (PRI) and the cytokinesis block proliferation index (CBPI), and also to induce a slight but statistically significant increase in the frequency of SCE. Under our conditions of testing, no genotoxic effects of trifluralin were observed in the CA and MN assays.

除草剂曲霉灵对体外暴露人淋巴细胞的遗传毒性评价
测定了除草剂曲霉灵对培养的人外周血淋巴细胞的遗传毒性。姐妹染色单体交换(SCE)、染色体畸变(CA)和微核(MN)作为遗传终点。为了检测该除草剂遗传毒性的最终代谢改变,SCE和MN演示的培养物也用S9馏分处理。从我们的结果我们可以得出结论,曲氟拉林能够发挥弱的细胞毒性作用,降低增殖率指数(PRI)和细胞分裂阻断增殖指数(CBPI),并诱导SCE的频率轻微但有统计学意义的增加。在我们的测试条件下,在CA和MN试验中未观察到曲氟拉林的遗传毒性作用。
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