title: Measurement of DNA breaks and oxidative damage in polymorphonuclear and mononuclear white blood cells: a novel approach using the comet assay.
abstract: DNA damage is thought to play a relevant role in degenerative diseases and aging. Therefore, measuring DNA damage in living cells without artifacts is a critical issue, especially with very sensitive methods, such as the comet assay, which can detect very low levels of DNA damage. We show here that the procedures of cell subtype isolation increase DNA damage measured in human white blood cells (WBC) with the comet assay. We describe a novel and simple method to measure DNA strand breaks and oxidative damage separately in polymorphonuclear and mononuclear leukocytes, using whole blood without previous cell isolation. This method can be useful for measuring DNA damage in different subtypes of human peripheral leukocytes, avoiding the artifacts and the time involved in the cell separation procedures.
authors.affiliation: Dipartimento di Farmacologia Preclinica e Clinica, Università di Firenze, Italy. lisag@pharm.unifi.it
authors.forename: Lisa
authors.initials: L
authors.lastname: Giovannelli
authors.forename: Vanessa
authors.initials: V
authors.lastname: Pitozzi
authors.forename: Silvia
authors.initials: S
authors.lastname: Riolo
authors.forename: Piero
authors.initials: P
authors.lastname: Dolara
mesh_terms: D002469:Cell Separation; D020552:Comet Assay; D004249:DNA Damage; D004305:Dose-Response Relationship, Drug; D005260:Female; D006801:Humans; D006861:Hydrogen Peroxide / Q000633:toxicity; D007963:Leukocytes, Mononuclear / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009153:Mutagens / Q000633:toxicity; D009504:Neutrophils / Q000187:drug effects / Q000378:metabolism* / Q000473:pathology; D010084:Oxidation-Reduction
chemical_list: D009153:Mutagens; D006861:Hydrogen Peroxide