title: Dichlorvos-induced toxicity in HCT116 cells: involvement of oxidative stress and apoptosis.
abstract: Organophosphorous (OP) pesticides are widely used in the agriculture and home. Among those pesticides, Dichlorvos (DDVP) is a worldwide used insecticide for pest control. DDVP is commonly used as an insecticide for maintenance and growth of agricultural products, to control the internal and external parasites of farm animals, and to eradicate insects threatening the household, public health, and stored products. Although substantial information is available regarding the environmental and ecological impact of DDVP, not much is known in regard to its toxicity in the mammalian system. Therefore a study was conducted for the assessment of cytotoxic and genotoxic effects of DDVP in human colon carcinoma (HCT116) cell line. We demonstrated that DDVP significantly decreased cell viability as assessed by the MTT assay. The increase in cell death was accompanied by a reduction in the mitochondrial membrane potential. Besides, pretreatment with Z-VAD-FMK, a general caspases inhibitor, decreased significantly the DDVP-induced cell death. We also shown that DDVP induced reactive oxygen species (ROS) generation followed by lipid peroxidation as evidenced by an increase in the MDA levels. Our results also indicate that DDVP induced a concentration-dependent increase in DNA damage as evident by the comet assay. These data indicate that DDVP produces cytotoxicity and DNA damage in mammalian cells and should be used with caution.
authors: Faculty of Dentistry, Laboratory for Research on Biologically Compatible Compounds, Rue Avicenne, Monastir 5019, Tunisia; Faculty of sciences of Bizerte, Carthage University, Tunis, Tunisia.
authors: Intidhar
authors: I
authors: Ben Salem
authors: Faculty of Dentistry, Laboratory for Research on Biologically Compatible Compounds, Rue Avicenne, Monastir 5019, Tunisia; Faculty of sciences of Bizerte, Carthage University, Tunis, Tunisia.
authors: Manel
authors: M
authors: Boussabbeh
authors: Faculty of Dentistry, Laboratory for Research on Biologically Compatible Compounds, Rue Avicenne, Monastir 5019, Tunisia. Electronic address: hassen.bacha@fmdm.rnu.tn.
authors: Hassen
authors: H
authors: Bacha
authors: Faculty of Dentistry, Laboratory for Research on Biologically Compatible Compounds, Rue Avicenne, Monastir 5019, Tunisia.
authors: Salwa
authors: S
authors: Abid
mesh_terms: D017209:Apoptosis / Q000187:drug effects*; D002470:Cell Survival / Q000187:drug effects; D053938:DNA Fragmentation / Q000187:drug effects; D004006:Dichlorvos / Q000633:toxicity*; D045325:HCT116 Cells; D006801:Humans; D007306:Insecticides / Q000633:toxicity*; D015227:Lipid Peroxidation / Q000187:drug effects; D053078:Membrane Potential, Mitochondrial / Q000187:drug effects; D018384:Oxidative Stress / Q000187:drug effects*
chemical_list: D007306:Insecticides; D004006:Dichlorvos
keywords: Apoptosis; DNA fragmentation; Dichlorvos; Oxidative stress