Abstract：
:Tembotrione is a rather novel pesticide, usually used for post-emergence weed control. Even though its use is rapidly growing, it is not followed by an adequate flow of scientific evidence regarding its toxicity towards non-target organisms. We evaluated the potential of low doses of tembotrione to induce oxidative stress and cytogenetic damage in blood and brain cells of adult male Wistar rats. Parameters of lipid peroxidation, glutathione levels, activities of antioxidant enzymes and primary DNA damage were assessed following 28-day repeated oral exposure to doses comparable with the currently proposed health-based reference values. The results of the alkaline comet assay showed that such low doses of tembotrione have the potency to inflict primary DNA damage in both peripheral blood leukocytes and brain of treated rats, even with only slight changes in the oxidative biomarker levels. The DNA damage in blood and brain cells of Wistar rats significantly increased at all applied doses, suggesting that tembotrione genotoxicity is mainly a result of direct interaction with DNA while the induction of oxidative stress responses contributes to DNA instability in a lesser extent. The findings of the present study call for further research using other sensitive biomarkers of effect and different exposure scenarios.
journal_name
Chemospherejournal_title
Chemosphereauthors
Tariba Lovaković B,Kašuba V,Katić A,Kopjar N,Marjanović Čermak AM,Micek V,Milić M,Pavičić I,Pizent A,Žunec S,Želježić Ddoi
10.1016/j.chemosphere.2020.126643subject
Has Abstractpub_date
2020-08-01 00:00:00pages
126643eissn
0045-6535issn
1879-1298pii
S0045-6535(20)30836-5journal_volume
253pub_type
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