Hypothermia modulates the DNA damage response to ionizing radiation in human peripheral blood lymphocytes

2018 ◽  
Vol 94 (6) ◽  
pp. 551-557 ◽  
Author(s):  
Halina Lisowska ◽  
Lei Cheng ◽  
Alice Sollazzo ◽  
Lovisa Lundholm ◽  
Aneta Wegierek-Ciuk ◽  
...  
Keyword(s):  
Dna Damage ◽  
Ionizing Radiation ◽  
Dna Damage Response ◽  
Peripheral Blood ◽  
Human Peripheral Blood ◽  
Peripheral Blood Lymphocytes ◽  
Blood Lymphocytes ◽  
Human Peripheral Blood Lymphocytes ◽  
Damage Response

scholarly journals Evaluation of Genotoxic and Cytotoxic Effects in Human Peripheral Blood Lymphocytes ExposedIn Vitroto Neonicotinoid Insecticides News

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
María Elena Calderón-Segura ◽  
Sandra Gómez-Arroyo ◽  
Rafael Villalobos-Pietrini ◽  
Carmen Martínez-Valenzuela ◽  
Yolanda Carbajal-López ◽  
...  
Keyword(s):  
Dna Damage ◽  
Peripheral Blood ◽  
Human Peripheral Blood ◽  
Peripheral Blood Lymphocytes ◽  
Blue Dye ◽  
Cytotoxic Effects ◽  
Blood Lymphocytes ◽  
Neonicotinoid Insecticides ◽  
Human Peripheral Blood Lymphocytes

Calypso (thiacloprid), Poncho (clothianidin), Gaucho (imidacloprid), and Jade (imidacloprid) are commercial neonicotinoid insecticides, a new class of agrochemicals in México. However, genotoxic and cytotoxic studies have not been performed. In the present study, human peripheral blood lymphocytes (PBL) were exposedin vitroto different concentrations of the four insecticides. The genotoxic and cytotoxic effects were evaluated using the alkaline comet and trypan blue dye exclusion assays. DNA damage was evaluated using two genotoxicity parameters: tail length and comet frequency. Exposure to9.5×10-6to5.7×10-5 M Jade;2.8×10-4to1.7×10-3 M Gaucho;0.6×10-1to1.4×10-1 M Calypso;1.2×10-1to9.5×10-1 M Poncho for 2 h induced a significant increase DNA damage with a concentration-dependent relationship. Jade was the most genotoxic of the four insecticides studied. Cytotoxicity was observed in cells exposed to18×10-3 M Jade,2.0×10-3 M Gaucho,2.0×10-1 M Calypso, 1.07 M Poncho, and cell death occurred at30×10-3 M Jade,3.3×10-3 M Gaucho,2.8×10-1 M Calypso, and 1.42 M Poncho. This study provides the first report of genotoxic and cytotoxic effects in PBL followingin vitroexposure to commercial neonicotinoid insecticides.

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