Genotoxicity assessmant of insecticdes and herbicides contaminants in environment by fish micronucleus and cytochrome P450 assays บทความวิจัย 3
abstract
This study was focused on genotoxicity evaluation of carbaryl (insecticide) and glyphosate (herbicied) using fish micronucleus and cytochrome P450 enzyme assays.Two sets of seven fish,Clarias macrocephalus,containing weight ranging from 63.0-67.0 g were exposed to sub-lethal dose of 0.01-0.05 mg/L carbary and 25-75 md/L glyphosate for 24 hr prior to investigation of micronclei (MN) and cytochrome P450 enzyme.After treatment,the survival rate of both treated and control groups were 100%. The micronuclei assay of three thousand erythrocytes from each fish revealed that five nuclear abnormalities were detected. The cytotoxic effects of cerbaryl and glyphosate were detected in all treatments with the increasing of frequencies of MN and nuclear abnormalities. However,the significant difference was observed when 0.01-0.05 mg/L carbaryl and 75 mg/L glyphosate were used.Referring to cytochrome P450 enzyme assay of liver microsomse, the cytochrome P450 contents were increased 91.29-366.2% (carbary treated) and 129.9-285.2% ()lyphosate treated), compering to control respectively.According to the cytochrome P450 enzyme assay, the increasing of carbaryl and glyphosate concentration related the diminshing of the enzyme activities to 49.61-89.98% and 61.17-82.43% comparing to the control. The data indicated that carbary and glyphosate caused genotoxicity by inducing MN and unclear abnormalities in C. macrocephalus and deterioration of cytochrome P450 enzyme activities. therefore, C. macrocephalus micronucleus assay and cytochrome P450 enzyme assay can be used for monitoring aquatic contaminants in environment.
Genotoxicity assessmant of insecticdes and herbicides contaminants in environment by fish micronucleus and cytochrome P450 assays บทความวิจัย 3
abstract
This study was focused on genotoxicity evaluation of carbaryl (insecticide) and glyphosate (herbicied) using fish micronucleus and cytochrome P450 enzyme assays.Two sets of seven fish,Clarias macrocephalus,containing weight ranging from 63.0-67.0 g were exposed to sub-lethal dose of 0.01-0.05 mg/L carbary and 25-75 md/L glyphosate for 24 hr prior to investigation of micronclei (MN) and cytochrome P450 enzyme.After treatment,the survival rate of both treated and control groups were 100%. The micronuclei assay of three thousand erythrocytes from each fish revealed that five nuclear abnormalities were detected. The cytotoxic effects of cerbaryl and glyphosate were detected in all treatments with the increasing of frequencies of MN and nuclear abnormalities. However,the significant difference was observed when 0.01-0.05 mg/L carbaryl and 75 mg/L glyphosate were used.Referring to cytochrome P450 enzyme assay of liver microsomse, the cytochrome P450 contents were increased 91.29-366.2% (carbary treated) and 129.9-285.2% ()lyphosate treated), compering to control respectively.According to the cytochrome P450 enzyme assay, the increasing of carbaryl and glyphosate concentration related the diminshing of the enzyme activities to 49.61-89.98% and 61.17-82.43% comparing to the control. The data indicated that carbary and glyphosate caused genotoxicity by inducing MN and unclear abnormalities in C. macrocephalus and deterioration of cytochrome P450 enzyme activities. therefore, C. macrocephalus micronucleus assay and cytochrome P450 enzyme assay can be used for monitoring aquatic contaminants in environment.
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Genotoxicity assessmant of insecticdes and herbicides contaminants in environment by fish micronucleus and cytochrome P450 assays บทความวิจัย 3
abstract
This study was focused on genotoxicity evaluation of carbaryl (insecticide) and glyphosate (herbicied) using fish micronucleus and cytochrome P450 enzyme assays.Two sets of seven fish,Clarias macrocephalus,containing weight ranging from 63.0-67.0 g were exposed to sub-lethal dose of 0.01-0.05 mg/L carbary and 25-75 md/L glyphosate for 24 hr prior to investigation of micronclei (MN) and cytochrome P450 enzyme.After treatment,the survival rate of both treated and control groups were 100%. The micronuclei assay of three thousand erythrocytes from each fish revealed that five nuclear abnormalities were detected. The cytotoxic effects of cerbaryl and glyphosate were detected in all treatments with the increasing of frequencies of MN and nuclear abnormalities. However,the significant difference was observed when 0.01-0.05 mg/L carbaryl and 75 mg/L glyphosate were used.Referring to cytochrome P450 enzyme assay of liver microsomse, the cytochrome P450 contents were increased 91.29-366.2% (carbary treated) and 129.9-285.2% ()lyphosate treated), compering to control respectively.According to the cytochrome P450 enzyme assay, the increasing of carbaryl and glyphosate concentration related the diminshing of the enzyme activities to 49.61-89.98% and 61.17-82.43% comparing to the control. The data indicated that carbary and glyphosate caused genotoxicity by inducing MN and unclear abnormalities in C. macrocephalus and deterioration of cytochrome P450 enzyme activities. therefore, C. macrocephalus micronucleus assay and cytochrome P450 enzyme assay can be used for monitoring aquatic contaminants in environment.
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