title: Bioactive contaminants leach from disposable laboratory plasticware.
abstract: Disposable plasticware such as test tubes, pipette tips, and multiwell assay or culture plates are used routinely in most biological research laboratories. Manufacturing of plastics requires the inclusion of numerous chemicals to enhance stability, durability, and performance. Some lubricating (slip) agents, exemplified by oleamide, also occur endogenously in humans and are biologically active, and cationic biocides are included to prevent bacterial colonization of the plastic surface. We demonstrate that these manufacturing agents leach from laboratory plasticware into a standard aqueous buffer, dimethyl sulfoxide, and methanol and can have profound effects on proteins and thus on results from bioassays of protein function. These findings have far-reaching implications for the use of disposable plasticware in biological research.
authors.affiliation: Department of Pharmacology, University of Alberta, Edmonton, AB T6G 2B7, Canada.
authors.forename: G Reid
authors.initials: GR
authors.lastname: McDonald
authors.forename: Alan L
authors.initials: AL
authors.lastname: Hudson
authors.forename: Susan M J
authors.initials: SM
authors.lastname: Dunn
authors.forename: Haitao
authors.initials: H
authors.lastname: You
authors.forename: Glen B
authors.initials: GB
authors.lastname: Baker
authors.forename: Randy M
authors.initials: RM
authors.lastname: Whittal
authors.forename: Jonathan W
authors.initials: JW
authors.lastname: Martin
authors.forename: Amitabh
authors.initials: A
authors.lastname: Jha
authors.forename: Dale E
authors.initials: DE
authors.lastname: Edmondson
authors.forename: Andrew
authors.initials: A
authors.lastname: Holt
mesh_terms: D000818:Animals; D004121:Dimethyl Sulfoxide; D004202:Disinfectants / Q000032:analysis* / Q000494:pharmacology; D004209:Disposable Equipment; D006801:Humans; D007753:Laboratories; D008995:Monoamine Oxidase / Q000378:metabolism*; D008996:Monoamine Oxidase Inhibitors / Q000494:pharmacology; D009829:Oleic Acids / Q000032:analysis* / Q000494:pharmacology; D010969:Plastics / Q000737:chemistry*; D000644:Quaternary Ammonium Compounds / Q000032:analysis* / Q000494:pharmacology; D051381:Rats; D012997:Solvents
chemical_list: D004202:Disinfectants; D008996:Monoamine Oxidase Inhibitors; D009829:Oleic Acids; D010969:Plastics; D000644:Quaternary Ammonium Compounds; D012997:Solvents; C533346:di(2-hydroxyethyl)methyldodecylammonium; C029407:oleylamide; D008995:Monoamine Oxidase; D004121:Dimethyl Sulfoxide