CITOTOXICIDADE IN VITRO DE CLOROFENOXIACETATO COM CÉLULAS HEPÁTICAS DE Metynnis roosevelti (PISCES, CHARACIDAE) EM CULTIVO
DOI:
https://doi.org/10.5380/avs.v4i1.3777Abstract
Células hepáticas de Metynnis roosevelti obtidas de cultivo celular primário foram submetidas a ensaios de citotoxicidade in vitro com os princípios ativos 2,4-D+MCPA (ácido 2,4 diclorofenoxiacético+ácido 4-cloro-2-metilfenoxiacético). Para determinação da CL50 foram utilizados dois métodos: um por meio da viabilidade celular com vermelho neutro e outro através da observação direta das células afetadas com microscópio invertido IM. A CL50 média das céluas hepáticas de Metynnis roosevelti em cultivo primário expostas ao 2,4D+MCPA por 24 horas, foi estabelecida entre 0,0265 g/ml e 0,0312 g/ml.
Abstract
In vitro citotoxicity of 2,4-D + MCPA (2,4-dichlorophenoxyacetic acid + 4-chloro-2- methylphenoxyacetic acid) tests were carried out with primary cultures of hepatic cells from Metynnis roosevelti (Pisces, Teleostei, Characidae). To establish the CL50 values, two different methods were used: the measurement of cell viability by means of neutral red and by the direct microscopic observation of the defective cells by means of an IM inverted microscope. The average CL50 value of the hepatic cells in primary cultures exposed to the chlorophenoxyacetates used, has been established between 0.0265 and 0.0312 g/ml.
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